src/WINNT/afsrdr/kernel/lib/AFSGeneric.cpp

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011 Kernel Drivers, LLC.
   3  * Copyright (c) 2009, 2010, 2011, 2012, 2013 Your File System, Inc.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright notice,
  11  *   this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * - Neither the names of Kernel Drivers, LLC and Your File System, Inc.
  16  *   nor the names of their contributors may be used to endorse or promote
  17  *   products derived from this software without specific prior written
  18  *   permission from Kernel Drivers, LLC and Your File System, Inc.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  24  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 //
  34 // File: AFSGeneric.cpp
  35 //
  36
  37 #include "AFSCommon.h"
  38
  39 //
  40 // Function: AFSExceptionFilter
  41 //
  42 // Description:
  43 //
  44 //      This function is the exception handler
  45 //
  46 // Return:
  47 //
  48 //      A status is returned for the function
  49 //
  50
  51 ULONG
  52 AFSExceptionFilter( IN CHAR *FunctionString,
  53                     IN ULONG Code,
  54                     IN PEXCEPTION_POINTERS ExceptPtrs)
  55 {
  56
  57     UNREFERENCED_PARAMETER(Code);
  58     PEXCEPTION_RECORD ExceptRec;
  59     PCONTEXT Context;
  60
  61     __try
  62     {
  63
  64         ExceptRec = ExceptPtrs->ExceptionRecord;
  65
  66         Context = ExceptPtrs->ContextRecord;
  67
  68         AFSDbgTrace(( 0,
  69                       0,
  70                       "AFSExceptionFilter (Library) - EXR %p CXR %p Function %s Code %08lX Address %p Routine %p\n",
  71                       ExceptRec,
  72                       Context,
  73                       FunctionString,
  74                       ExceptRec->ExceptionCode,
  75                       ExceptRec->ExceptionAddress,
  76                       (void *)AFSExceptionFilter));
  77
  78         DbgPrint("**** Exception Caught in AFS Redirector Library ****\n");
  79
  80         DbgPrint("\n\nPerform the following WnDbg Cmds:\n");
  81         DbgPrint("\n\t.exr %p ;  .cxr %p\n\n", ExceptRec, Context);
  82
  83         DbgPrint("**** Exception Complete from AFS Redirector Library ****\n");
  84
  85         if( BooleanFlagOn( AFSDebugFlags, AFS_DBG_BUGCHECK_EXCEPTION))
  86         {
  87
  88             KeBugCheck( (ULONG)-2);
  89         }
  90         else
  91         {
  92
  93             AFSBreakPoint();
  94         }
  95     }
  96     __except( EXCEPTION_EXECUTE_HANDLER)
  97     {
  98
  99         NOTHING;
 100     }
 101
 102     return EXCEPTION_EXECUTE_HANDLER;
 103 }
 104
 105 //
 106 // Function: AFSLibExAllocatePoolWithTag()
 107 //
 108 // Purpose: Allocate Pool Memory.  If BugCheck Exception flag
 109 //          is configured on, then bugcheck the system if
 110 //          a memory allocation fails.  The routine should be
 111 //          used for all memory allocations that are to be freed
 112 //          when the library is unloaded.  Memory allocations that
 113 //          are to survive library unload and reload should be
 114 //          performed using AFSExAllocatePoolWithTag() which is
 115 //          provided by the AFS Framework.
 116 //
 117 // Parameters:
 118 //                POOL_TYPE PoolType - Paged or NonPaged
 119 //                SIZE_T NumberOfBytes - requested allocation size
 120 //                ULONG  Tag - Pool Allocation Tag to be applied for tracking
 121 //
 122 // Return:
 123 //                void * - the memory allocation
 124 //
 125
 126 void *
 127 AFSLibExAllocatePoolWithTag( IN POOL_TYPE  PoolType,
 128                              IN SIZE_T  NumberOfBytes,
 129                              IN ULONG  Tag)
 130 {
 131
 132     void *pBuffer = NULL;
 133
 134     pBuffer = ExAllocatePoolWithTag( PoolType,
 135                                      NumberOfBytes,
 136                                      Tag);
 137
 138     if( pBuffer == NULL)
 139     {
 140
 141         if( BooleanFlagOn( AFSDebugFlags, AFS_DBG_BUGCHECK_EXCEPTION))
 142         {
 143
 144             KeBugCheck( (ULONG)-2);
 145         }
 146         else
 147         {
 148
 149             AFSDbgTrace(( 0,
 150                           0,
 151                           "AFSLibExAllocatePoolWithTag failure Type %08lX Size %08lX Tag %08lX %08lX\n",
 152                           PoolType,
 153                           NumberOfBytes,
 154                           Tag,
 155                           PsGetCurrentThread()));
 156
 157             AFSBreakPoint();
 158         }
 159     }
 160
 161     return pBuffer;
 162 }
 163
 164 //
 165 // Function: AFSAcquireExcl()
 166 //
 167 // Purpose: Called to acquire a resource exclusive with optional wait
 168 //
 169 // Parameters:
 170 //                PERESOURCE Resource - Resource to acquire
 171 //                BOOLEAN Wait - Whether to block
 172 //
 173 // Return:
 174 //                BOOLEAN - Whether the mask was acquired
 175 //
 176
 177 BOOLEAN
 178 AFSAcquireExcl( IN PERESOURCE Resource,
 179                 IN BOOLEAN wait)
 180 {
 181
 182     BOOLEAN bStatus = FALSE;
 183
 184     //
 185     // Normal kernel APCs must be disabled before calling
 186     // ExAcquireResourceExclusiveLite. Otherwise a bugcheck occurs.
 187     //
 188
 189     KeEnterCriticalRegion();
 190
 191     bStatus = ExAcquireResourceExclusiveLite( Resource,
 192                                               wait);
 193
 194     if( !bStatus)
 195     {
 196
 197         KeLeaveCriticalRegion();
 198     }
 199
 200     return bStatus;
 201 }
 202
 203 BOOLEAN
 204 AFSAcquireSharedStarveExclusive( IN PERESOURCE Resource,
 205                                  IN BOOLEAN Wait)
 206 {
 207
 208     BOOLEAN bStatus = FALSE;
 209
 210     KeEnterCriticalRegion();
 211
 212     bStatus = ExAcquireSharedStarveExclusive( Resource,
 213                                               Wait);
 214
 215     if( !bStatus)
 216     {
 217
 218         KeLeaveCriticalRegion();
 219     }
 220
 221     return bStatus;
 222 }
 223
 224 //
 225 // Function: AFSAcquireShared()
 226 //
 227 // Purpose: Called to acquire a resource shared with optional wait
 228 //
 229 // Parameters:
 230 //                PERESOURCE Resource - Resource to acquire
 231 //                BOOLEAN Wait - Whether to block
 232 //
 233 // Return:
 234 //                BOOLEAN - Whether the mask was acquired
 235 //
 236
 237 BOOLEAN
 238 AFSAcquireShared( IN PERESOURCE Resource,
 239                   IN BOOLEAN wait)
 240 {
 241
 242     BOOLEAN bStatus = FALSE;
 243
 244     KeEnterCriticalRegion();
 245
 246     bStatus = ExAcquireResourceSharedLite( Resource,
 247                                            wait);
 248
 249     if( !bStatus)
 250     {
 251
 252         KeLeaveCriticalRegion();
 253     }
 254
 255     return bStatus;
 256 }
 257
 258 //
 259 // Function: AFSReleaseResource()
 260 //
 261 // Purpose: Called to release a resource
 262 //
 263 // Parameters:
 264 //                PERESOURCE Resource - Resource to release
 265 //
 266 // Return:
 267 //                None
 268 //
 269
 270 void
 271 AFSReleaseResource( IN PERESOURCE Resource)
 272 {
 273
 274     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
 275                   AFS_TRACE_LEVEL_VERBOSE,
 276                   "AFSReleaseResource Releasing lock %p Thread %08lX\n",
 277                   Resource,
 278                   PsGetCurrentThread()));
 279
 280     ExReleaseResourceLite( Resource);
 281
 282     KeLeaveCriticalRegion();
 283
 284     return;
 285 }
 286
 287 void
 288 AFSConvertToShared( IN PERESOURCE Resource)
 289 {
 290
 291     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
 292                   AFS_TRACE_LEVEL_VERBOSE,
 293                   "AFSConvertToShared Converting lock %p Thread %08lX\n",
 294                   Resource,
 295                   PsGetCurrentThread()));
 296
 297     ExConvertExclusiveToSharedLite( Resource);
 298
 299     return;
 300 }
 301
 302 //
 303 // Function: AFSCompleteRequest
 304 //
 305 // Description:
 306 //
 307 //      This function completes irps
 308 //
 309 // Return:
 310 //
 311 //      A status is returned for the function
 312 //
 313
 314 void
 315 AFSCompleteRequest( IN PIRP Irp,
 316                     IN ULONG Status)
 317 {
 318
 319     Irp->IoStatus.Status = Status;
 320
 321     IoCompleteRequest( Irp,
 322                        IO_NO_INCREMENT);
 323
 324     return;
 325 }
 326
 327 //
 328 // Function: AFSGenerateCRC
 329 //
 330 // Description:
 331 //
 332 //      Given a device and filename this function generates a CRC
 333 //
 334 // Return:
 335 //
 336 //      A status is returned for the function
 337 //
 338
 339 ULONG
 340 AFSGenerateCRC( IN PUNICODE_STRING FileName,
 341                 IN BOOLEAN UpperCaseName)
 342 {
 343
 344     ULONG ulCRC = 0;
 345     NTSTATUS ntStatus = STATUS_SUCCESS;
 346
 347     ntStatus = RtlHashUnicodeString( FileName,
 348                                      UpperCaseName,
 349                                      HASH_STRING_ALGORITHM_DEFAULT,
 350                                      &ulCRC);
 351
 352     if( !NT_SUCCESS( ntStatus))
 353     {
 354         ulCRC = 0;
 355     }
 356
 357     return ulCRC;
 358 }
 359
 360 void *
 361 AFSLockSystemBuffer( IN PIRP Irp,
 362                      IN ULONG Length)
 363 {
 364
 365     void *pAddress = NULL;
 366
 367     if( Irp->MdlAddress != NULL)
 368     {
 369
 370         pAddress = MmGetSystemAddressForMdlSafe( Irp->MdlAddress,
 371                                                  NormalPagePriority);
 372     }
 373     else if( Irp->AssociatedIrp.SystemBuffer != NULL)
 374     {
 375
 376         pAddress = Irp->AssociatedIrp.SystemBuffer;
 377     }
 378     else if( Irp->UserBuffer != NULL)
 379     {
 380
 381         Irp->MdlAddress = IoAllocateMdl( Irp->UserBuffer,
 382                                          Length,
 383                                          FALSE,
 384                                          FALSE,
 385                                          Irp);
 386
 387         if( Irp->MdlAddress != NULL)
 388         {
 389
 390             //
 391             //  Lock the new Mdl in memory.
 392             //
 393
 394             __try
 395             {
 396                 PIO_STACK_LOCATION pIoStack;
 397                 pIoStack = IoGetCurrentIrpStackLocation( Irp);
 398
 399
 400                 MmProbeAndLockPages( Irp->MdlAddress, KernelMode,
 401                                      (pIoStack->MajorFunction == IRP_MJ_READ) ? IoWriteAccess : IoReadAccess);
 402
 403                 pAddress = MmGetSystemAddressForMdlSafe( Irp->MdlAddress, NormalPagePriority );
 404
 405             }
 406             __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
 407             {
 408
 409                 AFSDumpTraceFilesFnc();
 410
 411                 IoFreeMdl( Irp->MdlAddress );
 412                 Irp->MdlAddress = NULL;
 413                 pAddress = NULL;
 414             }
 415         }
 416     }
 417
 418     return pAddress;
 419 }
 420
 421 void *
 422 AFSLockUserBuffer( IN void *UserBuffer,
 423                    IN ULONG BufferLength,
 424                    OUT MDL ** Mdl)
 425 {
 426
 427     NTSTATUS ntStatus = STATUS_SUCCESS;
 428     void *pAddress = NULL;
 429     MDL *pMdl = NULL;
 430
 431     __Enter
 432     {
 433
 434         pMdl = IoAllocateMdl( UserBuffer,
 435                               BufferLength,
 436                               FALSE,
 437                               FALSE,
 438                               NULL);
 439
 440             if( pMdl == NULL)
 441             {
 442
 443                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 444             }
 445
 446         //
 447         //  Lock the new Mdl in memory.
 448         //
 449
 450         __try
 451         {
 452
 453             MmProbeAndLockPages( pMdl,
 454                                  KernelMode,
 455                                  IoWriteAccess);
 456
 457             pAddress = MmGetSystemAddressForMdlSafe( pMdl,
 458                                                      NormalPagePriority);
 459         }
 460         __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
 461         {
 462
 463             AFSDumpTraceFilesFnc();
 464
 465             IoFreeMdl( pMdl);
 466             pMdl = NULL;
 467             pAddress = NULL;
 468         }
 469
 470         if( pMdl != NULL)
 471         {
 472
 473             *Mdl = pMdl;
 474         }
 475
 476 try_exit:
 477
 478         NOTHING;
 479     }
 480
 481     return pAddress;
 482 }
 483
 484 void *
 485 AFSMapToService( IN PIRP Irp,
 486                  IN ULONG ByteCount)
 487 {
 488
 489     NTSTATUS ntStatus = STATUS_SUCCESS;
 490     void *pMappedBuffer = NULL;
 491     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 492     KAPC stApcState;
 493
 494     __Enter
 495     {
 496
 497         if( pDevExt->Specific.Control.ServiceProcess == NULL)
 498         {
 499
 500             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
 501         }
 502
 503         if( Irp->MdlAddress == NULL)
 504         {
 505
 506             if( AFSLockSystemBuffer( Irp,
 507                                      ByteCount) == NULL)
 508             {
 509
 510                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 511             }
 512         }
 513
 514         //
 515         // Attach to the service process for mapping
 516         //
 517
 518         KeStackAttachProcess( pDevExt->Specific.Control.ServiceProcess,
 519                               (PRKAPC_STATE)&stApcState);
 520
 521         pMappedBuffer = MmMapLockedPagesSpecifyCache( Irp->MdlAddress,
 522                                                       UserMode,
 523                                                       MmCached,
 524                                                       NULL,
 525                                                       FALSE,
 526                                                       NormalPagePriority);
 527
 528         KeUnstackDetachProcess( (PRKAPC_STATE)&stApcState);
 529
 530 try_exit:
 531
 532         NOTHING;
 533     }
 534
 535     return pMappedBuffer;
 536 }
 537
 538 NTSTATUS
 539 AFSUnmapServiceMappedBuffer( IN void *MappedBuffer,
 540                              IN PMDL Mdl)
 541 {
 542
 543     NTSTATUS ntStatus = STATUS_SUCCESS;
 544     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 545     KAPC stApcState;
 546
 547     __Enter
 548     {
 549
 550         if( pDevExt->Specific.Control.ServiceProcess == NULL)
 551         {
 552
 553             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
 554         }
 555
 556         if( Mdl != NULL)
 557         {
 558
 559             //
 560             // Attach to the service process for mapping
 561             //
 562
 563             KeStackAttachProcess( pDevExt->Specific.Control.ServiceProcess,
 564                                   (PRKAPC_STATE)&stApcState);
 565
 566             MmUnmapLockedPages( MappedBuffer,
 567                                 Mdl);
 568
 569             KeUnstackDetachProcess( (PRKAPC_STATE)&stApcState);
 570         }
 571
 572 try_exit:
 573
 574         NOTHING;
 575     }
 576
 577     return ntStatus;
 578 }
 579
 580 NTSTATUS
 581 AFSInitializeLibraryDevice()
 582 {
 583
 584     NTSTATUS ntStatus = STATUS_SUCCESS;
 585     AFSDeviceExt *pDeviceExt = NULL;
 586
 587     __Enter
 588     {
 589
 590         pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 591
 592         //
 593         // The PIOCtl file name
 594         //
 595
 596         RtlInitUnicodeString( &AFSPIOCtlName,
 597                               AFS_PIOCTL_FILE_INTERFACE_NAME);
 598
 599         //
 600         // And the global root share name
 601         //
 602
 603         RtlInitUnicodeString( &AFSGlobalRootName,
 604                               AFS_GLOBAL_ROOT_SHARE_NAME);
 605
 606     }
 607
 608     return ntStatus;
 609 }
 610
 611 NTSTATUS
 612 AFSRemoveLibraryDevice()
 613 {
 614
 615     NTSTATUS ntStatus = STATUS_SUCCESS;
 616
 617     __Enter
 618     {
 619
 620     }
 621
 622     return ntStatus;
 623 }
 624
 625 NTSTATUS
 626 AFSDefaultDispatch( IN PDEVICE_OBJECT DeviceObject,
 627                     IN PIRP Irp)
 628 {
 629
 630     UNREFERENCED_PARAMETER(DeviceObject);
 631     NTSTATUS            ntStatus = STATUS_INVALID_DEVICE_REQUEST;
 632
 633     AFSCompleteRequest( Irp,
 634                         ntStatus);
 635
 636     return ntStatus;
 637 }
 638
 639 NTSTATUS
 640 AFSInitializeGlobalDirectoryEntries()
 641 {
 642
 643     NTSTATUS ntStatus = STATUS_SUCCESS;
 644     AFSDirectoryCB *pDirNode = NULL;
 645     ULONG ulEntryLength = 0;
 646     AFSObjectInfoCB *pObjectInfoCB = NULL;
 647     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
 648     LONG lCount;
 649
 650     __Enter
 651     {
 652
 653         //
 654         // Initialize the global . entry
 655         //
 656
 657         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
 658                                                0);
 659
 660         if( pObjectInfoCB == NULL)
 661         {
 662
 663             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 664                           AFS_TRACE_LEVEL_ERROR,
 665                           "AFSInitializeGlobalDirectory AFSAllocateObjectInfo failure %08lX\n",
 666                           ntStatus));
 667
 668             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 669         }
 670
 671         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
 672                                          AFS_OBJECT_REFERENCE_GLOBAL);
 673
 674         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 675                       AFS_TRACE_LEVEL_VERBOSE,
 676                       "AFSInitializeGlobalDirectoryEntries Increment count on object %p Cnt %d\n",
 677                       pObjectInfoCB,
 678                       lCount));
 679
 680         ntStatus = STATUS_SUCCESS;
 681
 682         ulEntryLength = sizeof( AFSDirectoryCB) +
 683                                      sizeof( WCHAR);
 684
 685         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
 686                                                                   ulEntryLength,
 687                                                                   AFS_DIR_ENTRY_TAG);
 688
 689         if( pDirNode == NULL)
 690         {
 691
 692             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
 693                                              AFS_OBJECT_REFERENCE_GLOBAL);
 694
 695             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 696                           AFS_TRACE_LEVEL_VERBOSE,
 697                           "AFSInitializeGlobalDirectoryEntries Decrement count on object %p Cnt %d\n",
 698                           pObjectInfoCB,
 699                           lCount));
 700
 701             if ( lCount == 0)
 702             {
 703
 704                 AFSDeleteObjectInfo( &pObjectInfoCB);
 705             }
 706
 707             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING | AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 708                           AFS_TRACE_LEVEL_ERROR,
 709                           "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_TAG allocation failure\n"));
 710
 711             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 712         }
 713
 714         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 715                       AFS_TRACE_LEVEL_VERBOSE,
 716                       "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_TAG allocated %p\n",
 717                       pDirNode));
 718
 719         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 720                                                                                    sizeof( AFSNonPagedDirectoryCB),
 721                                                                                    AFS_DIR_ENTRY_NP_TAG);
 722
 723         if( pNonPagedDirEntry == NULL)
 724         {
 725
 726             AFSLibExFreePoolWithTag( pDirNode,
 727                                      AFS_DIR_ENTRY_TAG);
 728
 729             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
 730                                              AFS_OBJECT_REFERENCE_GLOBAL);
 731
 732             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 733                           AFS_TRACE_LEVEL_VERBOSE,
 734                           "AFSInitializeGlobalDirectoryEntries Decrement count on object %p Cnt %d\n",
 735                           pObjectInfoCB,
 736                           lCount));
 737
 738             if ( lCount == 0)
 739             {
 740
 741                 AFSDeleteObjectInfo( &pObjectInfoCB);
 742             }
 743
 744             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 745                           AFS_TRACE_LEVEL_ERROR,
 746                           "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_NP_TAG allocation failure\n"));
 747
 748             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 749         }
 750
 751         RtlZeroMemory( pDirNode,
 752                        ulEntryLength);
 753
 754         RtlZeroMemory( pNonPagedDirEntry,
 755                        sizeof( AFSNonPagedDirectoryCB));
 756
 757         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
 758
 759         pDirNode->NonPaged = pNonPagedDirEntry;
 760
 761         pDirNode->ObjectInformation = pObjectInfoCB;
 762
 763         //
 764         // Set valid entry
 765         //
 766
 767         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE | AFS_DIR_ENTRY_FAKE | AFS_DIR_ENTRY_VALID);
 768
 769         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_DOT_INDEX;
 770
 771         //
 772         // Setup the names in the entry
 773         //
 774
 775         pDirNode->NameInformation.FileName.Length = sizeof( WCHAR);
 776
 777         pDirNode->NameInformation.FileName.MaximumLength = sizeof( WCHAR);
 778
 779         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
 780
 781         pDirNode->NameInformation.FileName.Buffer[ 0] = L'.';
 782
 783         //
 784         // Populate the rest of the data
 785         //
 786
 787         pObjectInfoCB->FileType = AFS_FILE_TYPE_DIRECTORY;
 788
 789         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 790
 791         AFSGlobalDotDirEntry = pDirNode;
 792
 793         //
 794         // Now the .. entry
 795         //
 796
 797         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
 798                                                0);
 799
 800         if( pObjectInfoCB == NULL)
 801         {
 802
 803             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 804                           AFS_TRACE_LEVEL_ERROR,
 805                           "AFSInitializeGlobalDirectory AFSAllocateObjectInfo (2) failure %08lX\n",
 806                           ntStatus));
 807
 808             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 809         }
 810
 811         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
 812                                          AFS_OBJECT_REFERENCE_GLOBAL);
 813
 814         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 815                       AFS_TRACE_LEVEL_VERBOSE,
 816                       "AFSInitializeGlobalDirectoryEntries Increment count on object %p Cnt %d\n",
 817                       pObjectInfoCB,
 818                       lCount));
 819
 820         ntStatus = STATUS_SUCCESS;
 821
 822         ulEntryLength = sizeof( AFSDirectoryCB) +
 823                                      ( 2 * sizeof( WCHAR));
 824
 825         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
 826                                                                   ulEntryLength,
 827                                                                   AFS_DIR_ENTRY_TAG);
 828
 829         if( pDirNode == NULL)
 830         {
 831
 832             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING | AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 833                           AFS_TRACE_LEVEL_ERROR,
 834                           "AFSInitializeGlobalDirectoryEntries AFS_DIR_ENTRY_TAG allocation failure\n"));
 835
 836             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
 837                                              AFS_OBJECT_REFERENCE_GLOBAL);
 838
 839             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 840                           AFS_TRACE_LEVEL_VERBOSE,
 841                           "AFSInitializeGlobalDirectoryEntries Decrement count on object %p Cnt %d\n",
 842                           pObjectInfoCB,
 843                           lCount));
 844
 845             if ( lCount == 0)
 846             {
 847
 848                 AFSDeleteObjectInfo( &pObjectInfoCB);
 849             }
 850
 851             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 852         }
 853
 854         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 855                       AFS_TRACE_LEVEL_VERBOSE,
 856                       "AFSInitializeGlobalDirectoryEntries AFS_DIR_ENTRY_TAG allocated %p\n",
 857                       pDirNode));
 858
 859         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 860                                                                                    sizeof( AFSNonPagedDirectoryCB),
 861                                                                                    AFS_DIR_ENTRY_NP_TAG);
 862
 863         if( pNonPagedDirEntry == NULL)
 864         {
 865
 866             AFSLibExFreePoolWithTag( pDirNode,
 867                                      AFS_DIR_ENTRY_TAG);
 868
 869             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
 870                                              AFS_OBJECT_REFERENCE_GLOBAL);
 871
 872             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 873                           AFS_TRACE_LEVEL_VERBOSE,
 874                           "AFSInitializeGlobalDirectoryEntries Decrement count on object %p Cnt %d\n",
 875                           pObjectInfoCB,
 876                           lCount));
 877
 878             if ( lCount == 0)
 879             {
 880
 881                 AFSDeleteObjectInfo( &pObjectInfoCB);
 882             }
 883
 884             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 885         }
 886
 887         RtlZeroMemory( pDirNode,
 888                        ulEntryLength);
 889
 890         RtlZeroMemory( pNonPagedDirEntry,
 891                        sizeof( AFSNonPagedDirectoryCB));
 892
 893         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
 894
 895         pDirNode->NonPaged = pNonPagedDirEntry;
 896
 897         pDirNode->ObjectInformation = pObjectInfoCB;
 898
 899         //
 900         // Set valid entry
 901         //
 902
 903         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE | AFS_DIR_ENTRY_FAKE | AFS_DIR_ENTRY_VALID);
 904
 905         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_DOT_DOT_INDEX;
 906
 907         //
 908         // Setup the names in the entry
 909         //
 910
 911         pDirNode->NameInformation.FileName.Length = 2 * sizeof( WCHAR);
 912
 913         pDirNode->NameInformation.FileName.MaximumLength = 2 * sizeof( WCHAR);
 914
 915         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
 916
 917         pDirNode->NameInformation.FileName.Buffer[ 0] = L'.';
 918
 919         pDirNode->NameInformation.FileName.Buffer[ 1] = L'.';
 920
 921         //
 922         // Populate the rest of the data
 923         //
 924
 925         pObjectInfoCB->FileType = AFS_FILE_TYPE_DIRECTORY;
 926
 927         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 928
 929         AFSGlobalDotDotDirEntry = pDirNode;
 930
 931 try_exit:
 932
 933         if( !NT_SUCCESS( ntStatus))
 934         {
 935
 936             if( AFSGlobalDotDirEntry != NULL)
 937             {
 938
 939                 lCount = AFSObjectInfoDecrement( AFSGlobalDotDirEntry->ObjectInformation,
 940                                                  AFS_OBJECT_REFERENCE_GLOBAL);
 941
 942                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 943                               AFS_TRACE_LEVEL_VERBOSE,
 944                               "AFSInitializeGlobalDirectoryEntries Decrement count on object %p Cnt %d\n",
 945                               AFSGlobalDotDirEntry->ObjectInformation,
 946                               lCount));
 947
 948                 if ( lCount == 0)
 949                 {
 950
 951                     AFSDeleteObjectInfo( &AFSGlobalDotDirEntry->ObjectInformation);
 952                 }
 953
 954                 ExDeleteResourceLite( &AFSGlobalDotDirEntry->NonPaged->Lock);
 955
 956                 AFSLibExFreePoolWithTag( AFSGlobalDotDirEntry->NonPaged,
 957                                          AFS_DIR_ENTRY_NP_TAG);
 958
 959                 AFSLibExFreePoolWithTag( AFSGlobalDotDirEntry,
 960                                          AFS_DIR_ENTRY_TAG);
 961
 962                 AFSGlobalDotDirEntry = NULL;
 963             }
 964
 965             if( AFSGlobalDotDotDirEntry != NULL)
 966             {
 967
 968                 lCount = AFSObjectInfoDecrement( AFSGlobalDotDotDirEntry->ObjectInformation,
 969                                                  AFS_OBJECT_REFERENCE_GLOBAL);
 970
 971                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 972                               AFS_TRACE_LEVEL_VERBOSE,
 973                               "AFSInitializeGlobalDirectoryEntries Decrement count on object %p Cnt %d\n",
 974                               AFSGlobalDotDotDirEntry->ObjectInformation,
 975                               lCount));
 976
 977                 if ( lCount == 0)
 978                 {
 979
 980                     AFSDeleteObjectInfo( &AFSGlobalDotDotDirEntry->ObjectInformation);
 981                 }
 982
 983                 ExDeleteResourceLite( &AFSGlobalDotDotDirEntry->NonPaged->Lock);
 984
 985                 AFSLibExFreePoolWithTag( AFSGlobalDotDotDirEntry->NonPaged,
 986                                          AFS_DIR_ENTRY_NP_TAG);
 987
 988                 AFSLibExFreePoolWithTag( AFSGlobalDotDotDirEntry,
 989                                          AFS_DIR_ENTRY_TAG);
 990
 991                 AFSGlobalDotDotDirEntry = NULL;
 992             }
 993         }
 994     }
 995
 996     return ntStatus;
 997 }
 998
 999 AFSDirectoryCB *
1000 AFSInitDirEntry( IN AFSObjectInfoCB *ParentObjectInfo,
1001                  IN PUNICODE_STRING FileName,
1002                  IN PUNICODE_STRING TargetName,
1003                  IN AFSDirEnumEntry *DirEnumEntry,
1004                  IN ULONG FileIndex)
1005 {
1006
1007     AFSDirectoryCB *pDirNode = NULL;
1008     NTSTATUS ntStatus = STATUS_SUCCESS;
1009     ULONG ulEntryLength = 0;
1010     AFSObjectInfoCB *pObjectInfoCB = NULL;
1011     ULONGLONG ullIndex = 0;
1012     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
1013     LONG lCount;
1014
1015     __Enter
1016     {
1017
1018         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1019                       AFS_TRACE_LEVEL_VERBOSE,
1020                       "AFSInitDirEntry Initializing entry %wZ parent FID %08lX-%08lX-%08lX-%08lX\n",
1021                       FileName,
1022                       ParentObjectInfo->FileId.Cell,
1023                       ParentObjectInfo->FileId.Volume,
1024                       ParentObjectInfo->FileId.Vnode,
1025                       ParentObjectInfo->FileId.Unique));
1026
1027         //
1028         // First thing is to locate/create our object information block
1029         // for this entry
1030         //
1031
1032         AFSAcquireExcl( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
1033                         TRUE);
1034
1035         ullIndex = AFSCreateLowIndex( &DirEnumEntry->FileId);
1036
1037         ntStatus = AFSLocateHashEntry( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
1038                                        ullIndex,
1039                                        (AFSBTreeEntry **)&pObjectInfoCB);
1040
1041         if( !NT_SUCCESS( ntStatus))
1042         {
1043
1044             //
1045             // Allocate our object info cb
1046             //
1047
1048             pObjectInfoCB = AFSAllocateObjectInfo( ParentObjectInfo,
1049                                                    ullIndex);
1050
1051             if( pObjectInfoCB == NULL)
1052             {
1053
1054                 AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
1055
1056                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1057             }
1058
1059             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1060                           AFS_TRACE_LEVEL_VERBOSE,
1061                           "AFSInitDirEntry initialized object %p Parent Object %p for %wZ\n",
1062                           pObjectInfoCB,
1063                           ParentObjectInfo,
1064                           FileName));
1065
1066             //
1067             // If we allocated the object information cb then set the information
1068             //
1069
1070             pObjectInfoCB->FileId = DirEnumEntry->FileId;
1071
1072             pObjectInfoCB->TargetFileId = DirEnumEntry->TargetFileId;
1073
1074             pObjectInfoCB->FileType = DirEnumEntry->FileType;
1075
1076             pObjectInfoCB->FileAttributes = DirEnumEntry->FileAttributes;
1077
1078             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_MOUNTPOINT ||
1079                 pObjectInfoCB->FileType == AFS_FILE_TYPE_DFSLINK)
1080             {
1081
1082                 pObjectInfoCB->FileAttributes |= (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1083             }
1084
1085             if (pObjectInfoCB->FileType == AFS_FILE_TYPE_SYMLINK)
1086             {
1087
1088                 if ( pObjectInfoCB->FileAttributes == FILE_ATTRIBUTE_NORMAL)
1089                 {
1090
1091                     pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1092                 }
1093                 else
1094                 {
1095
1096                     pObjectInfoCB->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
1097                 }
1098             }
1099
1100             //
1101             // Check for the case where we have a filetype of SymLink but both the TargetFid and the
1102             // TargetName are empty. In this case set the filetype to zero so we evaluate it later in
1103             // the code
1104             //
1105
1106             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_SYMLINK &&
1107                 pObjectInfoCB->TargetFileId.Vnode == 0 &&
1108                 pObjectInfoCB->TargetFileId.Unique == 0 &&
1109                 (TargetName == NULL || TargetName->Length == 0))
1110             {
1111
1112                 //
1113                 // This will ensure we perform a validation on the node
1114                 //
1115
1116                 pObjectInfoCB->FileType = AFS_FILE_TYPE_UNKNOWN;
1117             }
1118
1119             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_UNKNOWN)
1120             {
1121
1122                 SetFlag( pObjectInfoCB->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED);
1123             }
1124
1125             SetFlag( pObjectInfoCB->Flags, AFS_OBJECT_FLAGS_VERIFY);
1126         }
1127
1128         if ( BooleanFlagOn( pObjectInfoCB->Flags, AFS_OBJECT_FLAGS_VERIFY))
1129         {
1130
1131             pObjectInfoCB->CreationTime = DirEnumEntry->CreationTime;
1132
1133             pObjectInfoCB->LastAccessTime = DirEnumEntry->LastAccessTime;
1134
1135             pObjectInfoCB->LastWriteTime = DirEnumEntry->LastWriteTime;
1136
1137             pObjectInfoCB->ChangeTime = DirEnumEntry->ChangeTime;
1138
1139             pObjectInfoCB->EndOfFile = DirEnumEntry->EndOfFile;
1140
1141             pObjectInfoCB->AllocationSize = DirEnumEntry->AllocationSize;
1142
1143             pObjectInfoCB->EaSize = DirEnumEntry->EaSize;
1144
1145             pObjectInfoCB->Links = DirEnumEntry->Links;
1146
1147             pObjectInfoCB->Expiration = DirEnumEntry->Expiration;
1148
1149             pObjectInfoCB->DataVersion = DirEnumEntry->DataVersion;
1150
1151             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1152                           AFS_TRACE_LEVEL_VERBOSE,
1153                           "AFSInitDirEntry FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
1154                           pObjectInfoCB->FileId.Cell,
1155                           pObjectInfoCB->FileId.Volume,
1156                           pObjectInfoCB->FileId.Vnode,
1157                           pObjectInfoCB->FileId.Unique));
1158
1159             ClearFlag( pObjectInfoCB->Flags, AFS_OBJECT_FLAGS_VERIFY);
1160         }
1161
1162         //
1163         // This reference count is either stored into the return DirectoryCB
1164         // or released before function exit.
1165         //
1166
1167         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
1168                                          AFS_OBJECT_REFERENCE_DIRENTRY);
1169
1170         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
1171                       AFS_TRACE_LEVEL_VERBOSE,
1172                       "AFSInitDirEntry Increment count on object %p Cnt %d\n",
1173                       pObjectInfoCB,
1174                       lCount));
1175
1176         KeQueryTickCount( &pObjectInfoCB->LastAccessCount);
1177
1178         AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
1179
1180         ntStatus = STATUS_SUCCESS;
1181
1182         ulEntryLength = sizeof( AFSDirectoryCB) +
1183                                      FileName->Length;
1184
1185         if( TargetName != NULL)
1186         {
1187
1188             ulEntryLength += TargetName->Length;
1189         }
1190
1191         pDirNode = (AFSDirectoryCB *)AFSExAllocatePoolWithTag( PagedPool,
1192                                                                ulEntryLength,
1193                                                                AFS_DIR_ENTRY_TAG);
1194
1195         if( pDirNode == NULL)
1196         {
1197
1198             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1199         }
1200
1201         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
1202                       AFS_TRACE_LEVEL_VERBOSE,
1203                       "AFSInitDirEntry AFS_DIR_ENTRY_TAG allocated %p\n",
1204                       pDirNode));
1205
1206         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSExAllocatePoolWithTag( NonPagedPool,
1207                                                                                 sizeof( AFSNonPagedDirectoryCB),
1208                                                                                 AFS_DIR_ENTRY_NP_TAG);
1209
1210         if( pNonPagedDirEntry == NULL)
1211         {
1212
1213             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1214         }
1215
1216         RtlZeroMemory( pDirNode,
1217                        ulEntryLength);
1218
1219         RtlZeroMemory( pNonPagedDirEntry,
1220                        sizeof( AFSNonPagedDirectoryCB));
1221
1222         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
1223
1224         pDirNode->NonPaged = pNonPagedDirEntry;
1225
1226         pDirNode->ObjectInformation = pObjectInfoCB;
1227
1228         //
1229         // Set valid entry and NOT_IN_PARENT flag
1230         //
1231
1232         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
1233
1234         pDirNode->FileIndex = FileIndex;
1235
1236         //
1237         // Setup the names in the entry
1238         //
1239
1240         if( FileName->Length > 0)
1241         {
1242
1243             pDirNode->NameInformation.FileName.Length = FileName->Length;
1244
1245             pDirNode->NameInformation.FileName.MaximumLength = FileName->Length;
1246
1247             pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
1248
1249             RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
1250                            FileName->Buffer,
1251                            pDirNode->NameInformation.FileName.Length);
1252
1253             //
1254             // Create a CRC for the file
1255             //
1256
1257             pDirNode->CaseSensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
1258                                                                          FALSE);
1259
1260             pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
1261                                                                            TRUE);
1262         }
1263
1264         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1265                       AFS_TRACE_LEVEL_VERBOSE,
1266                       "AFSInitDirEntry Initialized DE %p for %wZ in parent FID %08lX-%08lX-%08lX-%08lX\n",
1267                       pDirNode,
1268                       FileName,
1269                       ParentObjectInfo->FileId.Cell,
1270                       ParentObjectInfo->FileId.Volume,
1271                       ParentObjectInfo->FileId.Vnode,
1272                       ParentObjectInfo->FileId.Unique));
1273
1274         if( TargetName != NULL &&
1275             TargetName->Length > 0)
1276         {
1277
1278             pDirNode->NameInformation.TargetName.Length = TargetName->Length;
1279
1280             pDirNode->NameInformation.TargetName.MaximumLength = pDirNode->NameInformation.TargetName.Length;
1281
1282             pDirNode->NameInformation.TargetName.Buffer = (WCHAR *)((char *)pDirNode +
1283                                                                             sizeof( AFSDirectoryCB) +
1284                                                                             pDirNode->NameInformation.FileName.Length);
1285
1286             RtlCopyMemory( pDirNode->NameInformation.TargetName.Buffer,
1287                            TargetName->Buffer,
1288                            pDirNode->NameInformation.TargetName.Length);
1289         }
1290
1291
1292 try_exit:
1293
1294         if( !NT_SUCCESS( ntStatus))
1295         {
1296
1297             if( pNonPagedDirEntry != NULL)
1298             {
1299
1300                 ExDeleteResourceLite( &pNonPagedDirEntry->Lock);
1301
1302                 AFSExFreePoolWithTag( pNonPagedDirEntry, AFS_DIR_ENTRY_NP_TAG);
1303             }
1304
1305             if( pDirNode != NULL)
1306             {
1307
1308                 AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
1309                               AFS_TRACE_LEVEL_VERBOSE,
1310                               "AFSInitDirEntry AFS_DIR_ENTRY_TAG deallocating %p\n",
1311                               pDirNode));
1312
1313                 AFSExFreePoolWithTag( pDirNode, AFS_DIR_ENTRY_TAG);
1314
1315                 pDirNode = NULL;
1316             }
1317
1318             //
1319             // Dereference our object info block if we have one
1320             //
1321
1322             if( pObjectInfoCB != NULL)
1323             {
1324
1325                 AFSAcquireShared( pObjectInfoCB->VolumeCB->ObjectInfoTree.TreeLock,
1326                                   TRUE);
1327
1328                 lCount = AFSObjectInfoDecrement( pObjectInfoCB,
1329                                                  AFS_OBJECT_REFERENCE_DIRENTRY);
1330
1331                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
1332                               AFS_TRACE_LEVEL_VERBOSE,
1333                               "AFSInitDirEntry Decrement count on object %p Cnt %d\n",
1334                               pObjectInfoCB,
1335                               lCount));
1336
1337                 AFSReleaseResource( pObjectInfoCB->VolumeCB->ObjectInfoTree.TreeLock);
1338             }
1339         }
1340     }
1341
1342     return pDirNode;
1343 }
1344
1345 BOOLEAN
1346 AFSCheckForReadOnlyAccess( IN ACCESS_MASK DesiredAccess,
1347                            IN BOOLEAN DirectoryEntry)
1348 {
1349
1350     BOOLEAN bReturn = TRUE;
1351     ACCESS_MASK stAccessMask = 0;
1352
1353     //
1354     // Get rid of anything we don't know about
1355     //
1356
1357     DesiredAccess = (DesiredAccess   &
1358                           ( DELETE |
1359                             READ_CONTROL |
1360                             WRITE_OWNER |
1361                             WRITE_DAC |
1362                             SYNCHRONIZE |
1363                             ACCESS_SYSTEM_SECURITY |
1364                             FILE_WRITE_DATA |
1365                             FILE_READ_EA |
1366                             FILE_WRITE_EA |
1367                             FILE_READ_ATTRIBUTES |
1368                             FILE_WRITE_ATTRIBUTES |
1369                             FILE_LIST_DIRECTORY |
1370                             FILE_TRAVERSE |
1371                             FILE_DELETE_CHILD |
1372                             FILE_APPEND_DATA));
1373
1374     //
1375     // Our 'read only' access mask. These are the accesses we will
1376     // allow for a read only file
1377     //
1378
1379     stAccessMask = DELETE |
1380                         READ_CONTROL |
1381                         WRITE_OWNER |
1382                         WRITE_DAC |
1383                         SYNCHRONIZE |
1384                         ACCESS_SYSTEM_SECURITY |
1385                         FILE_READ_DATA |
1386                         FILE_READ_EA |
1387                         FILE_WRITE_EA |
1388                         FILE_READ_ATTRIBUTES |
1389                         FILE_WRITE_ATTRIBUTES |
1390                         FILE_EXECUTE |
1391                         FILE_LIST_DIRECTORY |
1392                         FILE_TRAVERSE;
1393
1394     //
1395     // For a directory, add in the directory specific accesses
1396     //
1397
1398     if( DirectoryEntry)
1399     {
1400
1401         stAccessMask |= FILE_ADD_SUBDIRECTORY |
1402                                 FILE_ADD_FILE |
1403                                 FILE_DELETE_CHILD;
1404     }
1405
1406     if( FlagOn( DesiredAccess, ~stAccessMask))
1407     {
1408
1409         //
1410         // A write access is set ...
1411         //
1412
1413         bReturn = FALSE;
1414     }
1415
1416     return bReturn;
1417 }
1418
1419 NTSTATUS
1420 AFSEvaluateNode( IN GUID *AuthGroup,
1421                  IN AFSDirectoryCB *DirEntry)
1422 {
1423
1424     NTSTATUS ntStatus = STATUS_SUCCESS;
1425     AFSDirEnumEntry *pDirEntry = NULL;
1426     UNICODE_STRING uniTargetName;
1427
1428     __Enter
1429     {
1430
1431         ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
1432                                           AuthGroup,
1433                                           FALSE,
1434                                           &pDirEntry);
1435
1436         if( !NT_SUCCESS( ntStatus))
1437         {
1438
1439             try_return( ntStatus);
1440         }
1441
1442         DirEntry->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
1443
1444         DirEntry->ObjectInformation->Expiration = pDirEntry->Expiration;
1445
1446         DirEntry->ObjectInformation->DataVersion = pDirEntry->DataVersion;
1447
1448         DirEntry->ObjectInformation->FileType = pDirEntry->FileType;
1449
1450         DirEntry->ObjectInformation->CreationTime = pDirEntry->CreationTime;
1451
1452         DirEntry->ObjectInformation->LastAccessTime = pDirEntry->LastAccessTime;
1453
1454         DirEntry->ObjectInformation->LastWriteTime = pDirEntry->LastWriteTime;
1455
1456         DirEntry->ObjectInformation->ChangeTime = pDirEntry->ChangeTime;
1457
1458         DirEntry->ObjectInformation->EndOfFile = pDirEntry->EndOfFile;
1459
1460         DirEntry->ObjectInformation->AllocationSize = pDirEntry->AllocationSize;
1461
1462         DirEntry->ObjectInformation->FileAttributes = pDirEntry->FileAttributes;
1463
1464         if( pDirEntry->FileType == AFS_FILE_TYPE_MOUNTPOINT ||
1465             pDirEntry->FileType == AFS_FILE_TYPE_DFSLINK)
1466         {
1467
1468             DirEntry->ObjectInformation->FileAttributes |= (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1469         }
1470
1471         if( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK)
1472         {
1473
1474             if ( DirEntry->ObjectInformation->FileAttributes == FILE_ATTRIBUTE_NORMAL)
1475             {
1476
1477                 DirEntry->ObjectInformation->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1478             }
1479             else
1480             {
1481
1482                 DirEntry->ObjectInformation->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
1483             }
1484         }
1485
1486         DirEntry->ObjectInformation->EaSize = pDirEntry->EaSize;
1487
1488         DirEntry->ObjectInformation->Links = pDirEntry->Links;
1489
1490         //
1491         // If we have a target name then see if it needs updating ...
1492         //
1493
1494         if( pDirEntry->TargetNameLength > 0)
1495         {
1496
1497             //
1498             // Update the target name information if needed
1499             //
1500
1501             uniTargetName.Length = (USHORT)pDirEntry->TargetNameLength;
1502
1503             uniTargetName.MaximumLength = uniTargetName.Length;
1504
1505             uniTargetName.Buffer = (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset);
1506
1507             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
1508                             TRUE);
1509
1510             if( DirEntry->NameInformation.TargetName.Length == 0 ||
1511                 RtlCompareUnicodeString( &uniTargetName,
1512                                          &DirEntry->NameInformation.TargetName,
1513                                          TRUE) != 0)
1514             {
1515
1516                 //
1517                 // Update the target name
1518                 //
1519
1520                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
1521                                                 &DirEntry->Flags,
1522                                                 uniTargetName.Buffer,
1523                                                 uniTargetName.Length);
1524
1525                 if( !NT_SUCCESS( ntStatus))
1526                 {
1527
1528                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
1529
1530                     try_return( ntStatus);
1531                 }
1532             }
1533
1534             AFSReleaseResource( &DirEntry->NonPaged->Lock);
1535         }
1536
1537 try_exit:
1538
1539         if( pDirEntry != NULL)
1540         {
1541
1542             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
1543         }
1544     }
1545
1546     return ntStatus;
1547 }
1548
1549 NTSTATUS
1550 AFSValidateSymLink( IN GUID *AuthGroup,
1551                     IN AFSDirectoryCB *DirEntry)
1552 {
1553
1554     NTSTATUS ntStatus = STATUS_SUCCESS;
1555     AFSDirEnumEntry *pDirEntry = NULL;
1556     UNICODE_STRING uniTargetName;
1557
1558     __Enter
1559     {
1560
1561         ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
1562                                           AuthGroup,
1563                                           FALSE,
1564                                           &pDirEntry);
1565
1566         if( !NT_SUCCESS( ntStatus))
1567         {
1568
1569             try_return( ntStatus);
1570         }
1571
1572         if( pDirEntry->FileType == AFS_FILE_TYPE_UNKNOWN ||
1573             pDirEntry->FileType == AFS_FILE_TYPE_INVALID)
1574         {
1575
1576             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1577                           AFS_TRACE_LEVEL_VERBOSE_2,
1578                           "AFSValidateSymLink Invalid type Status %08lX\n",
1579                           STATUS_OBJECT_NAME_NOT_FOUND));
1580
1581             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
1582         }
1583
1584         DirEntry->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
1585
1586         DirEntry->ObjectInformation->Expiration = pDirEntry->Expiration;
1587
1588         DirEntry->ObjectInformation->DataVersion = pDirEntry->DataVersion;
1589
1590         //
1591         // Update the target name information if needed
1592         //
1593
1594         uniTargetName.Length = (USHORT)pDirEntry->TargetNameLength;
1595
1596         uniTargetName.MaximumLength = uniTargetName.Length;
1597
1598         uniTargetName.Buffer = (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset);
1599
1600         if( uniTargetName.Length > 0)
1601         {
1602
1603             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
1604                             TRUE);
1605
1606             if( DirEntry->NameInformation.TargetName.Length == 0 ||
1607                 RtlCompareUnicodeString( &uniTargetName,
1608                                          &DirEntry->NameInformation.TargetName,
1609                                          TRUE) != 0)
1610             {
1611
1612                 //
1613                 // Update the target name
1614                 //
1615
1616                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
1617                                                 &DirEntry->Flags,
1618                                                 uniTargetName.Buffer,
1619                                                 uniTargetName.Length);
1620
1621                 if( !NT_SUCCESS( ntStatus))
1622                 {
1623
1624                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
1625
1626                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1627                 }
1628             }
1629
1630             AFSReleaseResource( &DirEntry->NonPaged->Lock);
1631         }
1632
1633         //
1634         // If the FileType is the same then nothing to do since it IS
1635         // a SymLink
1636         //
1637
1638         if( pDirEntry->FileType == DirEntry->ObjectInformation->FileType)
1639         {
1640
1641             ASSERT( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK);
1642
1643             try_return( ntStatus = STATUS_SUCCESS);
1644         }
1645
1646         DirEntry->ObjectInformation->FileType = pDirEntry->FileType;
1647
1648         DirEntry->ObjectInformation->CreationTime = pDirEntry->CreationTime;
1649
1650         DirEntry->ObjectInformation->LastAccessTime = pDirEntry->LastAccessTime;
1651
1652         DirEntry->ObjectInformation->LastWriteTime = pDirEntry->LastWriteTime;
1653
1654         DirEntry->ObjectInformation->ChangeTime = pDirEntry->ChangeTime;
1655
1656         DirEntry->ObjectInformation->EndOfFile = pDirEntry->EndOfFile;
1657
1658         DirEntry->ObjectInformation->AllocationSize = pDirEntry->AllocationSize;
1659
1660         DirEntry->ObjectInformation->FileAttributes = pDirEntry->FileAttributes;
1661
1662         if( pDirEntry->FileType == AFS_FILE_TYPE_MOUNTPOINT ||
1663             pDirEntry->FileType == AFS_FILE_TYPE_DFSLINK)
1664         {
1665
1666             DirEntry->ObjectInformation->FileAttributes |= (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1667         }
1668
1669         if( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK)
1670         {
1671
1672             if ( DirEntry->ObjectInformation->FileAttributes == FILE_ATTRIBUTE_NORMAL)
1673             {
1674
1675                 DirEntry->ObjectInformation->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1676             }
1677             else
1678             {
1679
1680                 DirEntry->ObjectInformation->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
1681             }
1682         }
1683
1684         DirEntry->ObjectInformation->EaSize = pDirEntry->EaSize;
1685
1686         DirEntry->ObjectInformation->Links = pDirEntry->Links;
1687
1688 try_exit:
1689
1690         if( pDirEntry != NULL)
1691         {
1692
1693             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
1694         }
1695     }
1696
1697     return ntStatus;
1698 }
1699
1700 NTSTATUS
1701 AFSInvalidateObject( IN OUT AFSObjectInfoCB **ppObjectInfo,
1702                      IN     ULONG Reason)
1703 {
1704
1705     NTSTATUS ntStatus = STATUS_SUCCESS;
1706     AFSDeviceExt *pRDRDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
1707     IO_STATUS_BLOCK stIoStatus;
1708     ULONG ulFilter = 0;
1709     AFSObjectInfoCB * pParentObjectInfo = NULL;
1710
1711     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1712                   AFS_TRACE_LEVEL_VERBOSE,
1713                   "AFSInvalidateObject Invalidation on node type %d for fid %08lX-%08lX-%08lX-%08lX Reason %d\n",
1714                   (*ppObjectInfo)->FileType,
1715                   (*ppObjectInfo)->FileId.Cell,
1716                   (*ppObjectInfo)->FileId.Volume,
1717                   (*ppObjectInfo)->FileId.Vnode,
1718                   (*ppObjectInfo)->FileId.Unique,
1719                   Reason));
1720
1721     if ( BooleanFlagOn( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_PARENT_FID))
1722     {
1723
1724         pParentObjectInfo = AFSFindObjectInfo( (*ppObjectInfo)->VolumeCB,
1725                                                &(*ppObjectInfo)->ParentFileId,
1726                                                FALSE);
1727     }
1728
1729     if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_SYMLINK ||
1730         (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DFSLINK ||
1731         (*ppObjectInfo)->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1732     {
1733         //
1734         // We only act on the mount point itself, not the target. If the
1735         // node has been deleted then mark it as such otherwise indicate
1736         // it requires verification
1737         //
1738
1739         if( Reason == AFS_INVALIDATE_DELETED)
1740         {
1741             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
1742         }
1743         else
1744         {
1745
1746             if( Reason == AFS_INVALIDATE_FLUSHED)
1747             {
1748
1749                 (*ppObjectInfo)->DataVersion.QuadPart = (ULONGLONG)-1;
1750             }
1751
1752             (*ppObjectInfo)->Expiration.QuadPart = 0;
1753
1754             (*ppObjectInfo)->TargetFileId.Vnode = 0;
1755
1756             (*ppObjectInfo)->TargetFileId.Unique = 0;
1757
1758             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1759                           AFS_TRACE_LEVEL_VERBOSE,
1760                           "AFSInvalidateObject Setting VERIFY flag on fid %08lX-%08lX-%08lX-%08lX\n",
1761                           (*ppObjectInfo)->FileId.Cell,
1762                           (*ppObjectInfo)->FileId.Volume,
1763                           (*ppObjectInfo)->FileId.Vnode,
1764                           (*ppObjectInfo)->FileId.Unique));
1765
1766             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY);
1767         }
1768
1769         if ( pParentObjectInfo != NULL)
1770         {
1771
1772             ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1773
1774             if( Reason == AFS_INVALIDATE_CREDS)
1775             {
1776                 ulFilter |= FILE_NOTIFY_CHANGE_SECURITY;
1777             }
1778
1779             if( Reason == AFS_INVALIDATE_DATA_VERSION ||
1780                 Reason == AFS_INVALIDATE_FLUSHED)
1781             {
1782                 ulFilter |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE;
1783             }
1784             else
1785             {
1786                 ulFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1787             }
1788
1789             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1790                                             NULL,
1791                                             ulFilter,
1792                                             FILE_ACTION_MODIFIED);
1793         }
1794
1795         try_return( ntStatus);
1796     }
1797
1798     //
1799     // Depending on the reason for invalidation then perform work on the node
1800     //
1801
1802     switch( Reason)
1803     {
1804
1805     case AFS_INVALIDATE_DELETED:
1806         {
1807
1808             //
1809             // Mark this node as invalid
1810             //
1811
1812             (*ppObjectInfo)->Links = 0;
1813
1814             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_DELETED);
1815
1816             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1817                           AFS_TRACE_LEVEL_VERBOSE,
1818                           "AFSInvalidateObject Set DELETE flag on fid %08lX-%08lX-%08lX-%08lX\n",
1819                           (*ppObjectInfo)->FileId.Cell,
1820                           (*ppObjectInfo)->FileId.Volume,
1821                           (*ppObjectInfo)->FileId.Vnode,
1822                           (*ppObjectInfo)->FileId.Unique));
1823
1824             if( pParentObjectInfo != NULL)
1825             {
1826
1827                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1828                               AFS_TRACE_LEVEL_VERBOSE,
1829                               "AFSInvalidateObject Set VERIFY flag on parent fid %08lX-%08lX-%08lX-%08lX\n",
1830                               pParentObjectInfo->FileId.Cell,
1831                               pParentObjectInfo->FileId.Volume,
1832                               pParentObjectInfo->FileId.Vnode,
1833                               pParentObjectInfo->FileId.Unique));
1834
1835                 SetFlag( pParentObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
1836
1837                 pParentObjectInfo->DataVersion.QuadPart = (ULONGLONG)-1;
1838
1839                 pParentObjectInfo->Expiration.QuadPart = 0;
1840
1841                 if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1842                 {
1843                     ulFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
1844                 }
1845                 else
1846                 {
1847                     ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1848                 }
1849
1850                 AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1851                                                 NULL,
1852                                                 ulFilter,
1853                                                 FILE_ACTION_REMOVED);
1854             }
1855
1856             if( NT_SUCCESS( AFSQueueInvalidateObject( (*ppObjectInfo),
1857                                                       Reason)))
1858             {
1859                 (*ppObjectInfo) = NULL; // We'll dec the count in the worker item
1860             }
1861
1862             break;
1863         }
1864
1865     case AFS_INVALIDATE_FLUSHED:
1866         {
1867
1868             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE &&
1869                 (*ppObjectInfo)->Fcb != NULL)
1870             {
1871
1872                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1873                               AFS_TRACE_LEVEL_VERBOSE,
1874                               "AFSInvalidateObject Flush/purge file fid %08lX-%08lX-%08lX-%08lX\n",
1875                               (*ppObjectInfo)->FileId.Cell,
1876                               (*ppObjectInfo)->FileId.Volume,
1877                               (*ppObjectInfo)->FileId.Vnode,
1878                               (*ppObjectInfo)->FileId.Unique));
1879
1880                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
1881                               AFS_TRACE_LEVEL_VERBOSE,
1882                               "AFSInvalidateObject Flush/purge Acquiring Fcb lock %p EXCL %08lX\n",
1883                               &(*ppObjectInfo)->Fcb->NPFcb->Resource,
1884                               PsGetCurrentThread()));
1885
1886                 AFSAcquireExcl( &(*ppObjectInfo)->Fcb->NPFcb->Resource,
1887                                 TRUE);
1888
1889                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
1890                               AFS_TRACE_LEVEL_VERBOSE,
1891                               "AFSInvalidateObject Flush/purge Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
1892                               &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectResource,
1893                               PsGetCurrentThread()));
1894
1895                 AFSAcquireExcl( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectResource,
1896                                 TRUE);
1897
1898                 __try
1899                 {
1900
1901                     CcFlushCache( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers,
1902                                   NULL,
1903                                   0,
1904                                   &stIoStatus);
1905
1906                     if( !NT_SUCCESS( stIoStatus.Status))
1907                     {
1908
1909                         AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
1910                                       AFS_TRACE_LEVEL_ERROR,
1911                                       "AFSInvalidateObject CcFlushCache failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
1912                                       (*ppObjectInfo)->FileId.Cell,
1913                                       (*ppObjectInfo)->FileId.Volume,
1914                                       (*ppObjectInfo)->FileId.Vnode,
1915                                       (*ppObjectInfo)->FileId.Unique,
1916                                       stIoStatus.Status,
1917                                       stIoStatus.Information));
1918
1919                         ntStatus = stIoStatus.Status;
1920                     }
1921
1922
1923                     if ( (*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
1924                     {
1925
1926                         if ( !CcPurgeCacheSection( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers,
1927                                                    NULL,
1928                                                    0,
1929                                                    FALSE))
1930                         {
1931
1932                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
1933                                           AFS_TRACE_LEVEL_WARNING,
1934                                           "AFSInvalidateObject CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
1935                                           (*ppObjectInfo)->FileId.Cell,
1936                                           (*ppObjectInfo)->FileId.Volume,
1937                                           (*ppObjectInfo)->FileId.Vnode,
1938                                           (*ppObjectInfo)->FileId.Unique));
1939
1940                             SetFlag( (*ppObjectInfo)->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
1941                         }
1942                     }
1943                 }
1944                 __except( EXCEPTION_EXECUTE_HANDLER)
1945                 {
1946
1947                     ntStatus = GetExceptionCode();
1948
1949                     AFSDbgTrace(( 0,
1950                                   0,
1951                                   "EXCEPTION - AFSInvalidateObject Cc FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
1952                                   (*ppObjectInfo)->FileId.Cell,
1953                                   (*ppObjectInfo)->FileId.Volume,
1954                                   (*ppObjectInfo)->FileId.Vnode,
1955                                   (*ppObjectInfo)->FileId.Unique,
1956                                   ntStatus));
1957
1958                     SetFlag( (*ppObjectInfo)->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
1959                 }
1960
1961                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
1962                               AFS_TRACE_LEVEL_VERBOSE,
1963                               "AFSInvalidateObject Flush/purge Releasing Fcb SectionObject lock %p EXCL %08lX\n",
1964                               &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectResource,
1965                               PsGetCurrentThread()));
1966
1967                 AFSReleaseResource( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectResource);
1968
1969                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
1970                               AFS_TRACE_LEVEL_VERBOSE,
1971                               "AFSInvalidateObject Flush/purge Releasing Fcb lock %p EXCL %08lX\n",
1972                               &(*ppObjectInfo)->Fcb->NPFcb->Resource,
1973                               PsGetCurrentThread()));
1974
1975                 AFSReleaseResource( &(*ppObjectInfo)->Fcb->NPFcb->Resource);
1976
1977                 if( !BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
1978                 {
1979
1980                     //
1981                     // Clear out the extents
1982                     // Get rid of them (note this involves waiting
1983                     // for any writes or reads to the cache to complete)
1984                     //
1985
1986                     AFSTearDownFcbExtents( (*ppObjectInfo)->Fcb,
1987                                            NULL);
1988                 }
1989             }
1990
1991             (*ppObjectInfo)->DataVersion.QuadPart = (ULONGLONG)-1;
1992
1993
1994             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE)
1995             {
1996
1997                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1998                               AFS_TRACE_LEVEL_VERBOSE,
1999                               "AFSInvalidateObject Setting VERIFY_DATA flag on fid %08lX-%08lX-%08lX-%08lX\n",
2000                               (*ppObjectInfo)->FileId.Cell,
2001                               (*ppObjectInfo)->FileId.Volume,
2002                               (*ppObjectInfo)->FileId.Vnode,
2003                               (*ppObjectInfo)->FileId.Unique));
2004
2005                 SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
2006             }
2007
2008             // Fall through to the default processing
2009         }
2010
2011     default:
2012         {
2013
2014             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
2015             {
2016                 ulFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
2017             }
2018             else
2019             {
2020                 ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
2021             }
2022
2023             if( Reason == AFS_INVALIDATE_CREDS)
2024             {
2025                 ulFilter |= FILE_NOTIFY_CHANGE_SECURITY;
2026             }
2027
2028             if( Reason == AFS_INVALIDATE_DATA_VERSION)
2029             {
2030                 ulFilter |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE;
2031             }
2032             else
2033             {
2034                 ulFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
2035             }
2036
2037             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
2038             {
2039
2040                 AFSFsRtlNotifyFullReportChange( (*ppObjectInfo),
2041                                                 NULL,
2042                                                 ulFilter,
2043                                                 FILE_ACTION_MODIFIED);
2044             }
2045             else if ( pParentObjectInfo != NULL)
2046             {
2047
2048                 AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
2049                                                 NULL,
2050                                                 ulFilter,
2051                                                 FILE_ACTION_MODIFIED);
2052             }
2053
2054             //
2055             // Indicate this node requires re-evaluation for the remaining reasons
2056             //
2057
2058             (*ppObjectInfo)->Expiration.QuadPart = 0;
2059
2060             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2061                           AFS_TRACE_LEVEL_VERBOSE,
2062                           "AFSInvalidateObject Setting VERIFY flag on fid %08lX-%08lX-%08lX-%08lX\n",
2063                           (*ppObjectInfo)->FileId.Cell,
2064                           (*ppObjectInfo)->FileId.Volume,
2065                           (*ppObjectInfo)->FileId.Vnode,
2066                           (*ppObjectInfo)->FileId.Unique));
2067
2068             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY);
2069
2070             if( Reason == AFS_INVALIDATE_DATA_VERSION ||
2071                 (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE &&
2072                 ( Reason == AFS_INVALIDATE_CALLBACK ||
2073                   Reason == AFS_INVALIDATE_EXPIRED))
2074             {
2075                 if ( NT_SUCCESS( AFSQueueInvalidateObject( (*ppObjectInfo),
2076                                                            AFS_INVALIDATE_DATA_VERSION)))
2077                 {
2078
2079                     (*ppObjectInfo) = NULL; // We'll dec the count in the worker item
2080                 }
2081             }
2082
2083             break;
2084         }
2085     }
2086
2087   try_exit:
2088
2089     if ( pParentObjectInfo != NULL)
2090     {
2091
2092         AFSReleaseObjectInfo( &pParentObjectInfo);
2093     }
2094
2095     return ntStatus;
2096 }
2097
2098 NTSTATUS
2099 AFSInvalidateCache( IN AFSInvalidateCacheCB *InvalidateCB)
2100 {
2101
2102     NTSTATUS ntStatus = STATUS_SUCCESS;
2103     AFSVolumeCB *pVolumeCB = NULL;
2104     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
2105     ULONGLONG   ullIndex = 0;
2106     AFSObjectInfoCB *pObjectInfo = NULL;
2107     LONG lCount;
2108
2109     __Enter
2110     {
2111
2112         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2113                       AFS_TRACE_LEVEL_VERBOSE,
2114                       "AFSInvalidateCache Invalidation FID %08lX-%08lX-%08lX-%08lX Type %d WholeVolume %d Reason %d\n",
2115                       InvalidateCB->FileID.Cell,
2116                       InvalidateCB->FileID.Volume,
2117                       InvalidateCB->FileID.Vnode,
2118                       InvalidateCB->FileID.Unique,
2119                       InvalidateCB->FileType,
2120                       InvalidateCB->WholeVolume,
2121                       InvalidateCB->Reason));
2122
2123         //
2124         // Need to locate the Fcb for the directory to purge
2125         //
2126
2127         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
2128                       AFS_TRACE_LEVEL_VERBOSE,
2129                       "AFSInvalidateCache Acquiring RDR VolumeTreeLock lock %p SHARED %08lX\n",
2130                       &pDevExt->Specific.RDR.VolumeTreeLock,
2131                       PsGetCurrentThread()));
2132
2133         //
2134         // Starve any exclusive waiters on this paticular call
2135         //
2136
2137         AFSAcquireSharedStarveExclusive( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
2138
2139         //
2140         // Locate the volume node
2141         //
2142
2143         ullIndex = AFSCreateHighIndex( &InvalidateCB->FileID);
2144
2145         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
2146                                        ullIndex,
2147                                        (AFSBTreeEntry **)&pVolumeCB);
2148
2149         if( pVolumeCB != NULL)
2150         {
2151
2152             lCount = AFSVolumeIncrement( pVolumeCB,
2153                                          AFS_VOLUME_REFERENCE_INVALIDATE);
2154
2155             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2156                           AFS_TRACE_LEVEL_VERBOSE,
2157                           "AFSInvalidateCache Increment count on volume %p Cnt %d\n",
2158                           pVolumeCB,
2159                           lCount));
2160         }
2161
2162         AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
2163
2164         if( !NT_SUCCESS( ntStatus) ||
2165             pVolumeCB == NULL)
2166         {
2167
2168             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2169                           AFS_TRACE_LEVEL_WARNING,
2170                           "AFSInvalidateCache Invalidation FAILURE Unable to locate volume node FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2171                           InvalidateCB->FileID.Cell,
2172                           InvalidateCB->FileID.Volume,
2173                           InvalidateCB->FileID.Vnode,
2174                           InvalidateCB->FileID.Unique,
2175                           ntStatus));
2176
2177             try_return( ntStatus = STATUS_SUCCESS);
2178         }
2179
2180         //
2181         // If this is a whole volume invalidation then go do it now
2182         //
2183
2184         if( InvalidateCB->WholeVolume)
2185         {
2186
2187             ntStatus = AFSInvalidateVolume( pVolumeCB,
2188                                             InvalidateCB->Reason);
2189
2190             try_return( ntStatus);
2191         }
2192
2193         AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
2194                           TRUE);
2195
2196         if ( AFSIsVolumeFID( &InvalidateCB->FileID))
2197         {
2198
2199             pObjectInfo = &pVolumeCB->ObjectInformation;
2200         }
2201         else
2202         {
2203
2204             ullIndex = AFSCreateLowIndex( &InvalidateCB->FileID);
2205
2206             ntStatus = AFSLocateHashEntry( pVolumeCB->ObjectInfoTree.TreeHead,
2207                                            ullIndex,
2208                                            (AFSBTreeEntry **)&pObjectInfo);
2209         }
2210
2211         if( pObjectInfo != NULL)
2212         {
2213
2214             //
2215             // Reference the node so it won't be torn down
2216             //
2217
2218             lCount = AFSObjectInfoIncrement( pObjectInfo,
2219                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2220
2221             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2222                           AFS_TRACE_LEVEL_VERBOSE,
2223                           "AFSInvalidateCache Increment count on object %p Cnt %d\n",
2224                           pObjectInfo,
2225                           lCount));
2226         }
2227
2228         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
2229
2230         if( !NT_SUCCESS( ntStatus) ||
2231             pObjectInfo == NULL)
2232         {
2233
2234             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2235                           AFS_TRACE_LEVEL_VERBOSE,
2236                           "AFSInvalidateCache Invalidation FAILURE Unable to locate object FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2237                           InvalidateCB->FileID.Cell,
2238                           InvalidateCB->FileID.Volume,
2239                           InvalidateCB->FileID.Vnode,
2240                           InvalidateCB->FileID.Unique,
2241                           ntStatus));
2242
2243             try_return( ntStatus = STATUS_SUCCESS);
2244         }
2245
2246         AFSInvalidateObject( &pObjectInfo,
2247                              InvalidateCB->Reason);
2248
2249 try_exit:
2250
2251         if( pObjectInfo != NULL)
2252         {
2253
2254             lCount = AFSObjectInfoDecrement( pObjectInfo,
2255                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2256
2257             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2258                           AFS_TRACE_LEVEL_VERBOSE,
2259                           "AFSInvalidateCache Decrement count on object %p Cnt %d\n",
2260                           pObjectInfo,
2261                           lCount));
2262         }
2263
2264         if ( pVolumeCB != NULL)
2265         {
2266
2267             lCount = AFSVolumeDecrement( pVolumeCB,
2268                                          AFS_VOLUME_REFERENCE_INVALIDATE);
2269
2270             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2271                           AFS_TRACE_LEVEL_VERBOSE,
2272                           "AFSInvalidateCache Decrement count on volume %p Cnt %d\n",
2273                           pVolumeCB,
2274                           lCount));
2275         }
2276     }
2277
2278     return ntStatus;
2279 }
2280
2281 BOOLEAN
2282 AFSIsChildOfParent( IN AFSFcb *Dcb,
2283                     IN AFSFcb *Fcb)
2284 {
2285
2286     BOOLEAN bIsChild = FALSE;
2287     AFSFcb *pCurrentFcb = Fcb;
2288     AFSObjectInfoCB * pParentObjectInfo = NULL;
2289
2290     while( pCurrentFcb != NULL)
2291     {
2292
2293         if( BooleanFlagOn( pCurrentFcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_PARENT_FID) &&
2294             AFSIsEqualFID( &pCurrentFcb->ObjectInformation->ParentFileId, &Dcb->ObjectInformation->FileId))
2295         {
2296
2297             bIsChild = TRUE;
2298
2299             break;
2300         }
2301
2302         pParentObjectInfo = AFSFindObjectInfo( pCurrentFcb->ObjectInformation->VolumeCB,
2303                                                &pCurrentFcb->ObjectInformation->ParentFileId,
2304                                                FALSE);
2305
2306         if ( pParentObjectInfo != NULL)
2307         {
2308
2309             pCurrentFcb = pParentObjectInfo->Fcb;
2310
2311             AFSReleaseObjectInfo( &pParentObjectInfo);
2312         }
2313         else
2314         {
2315
2316             pCurrentFcb = NULL;
2317         }
2318     }
2319
2320     return bIsChild;
2321 }
2322
2323 inline
2324 ULONGLONG
2325 AFSCreateHighIndex( IN AFSFileID *FileID)
2326 {
2327
2328     ULONGLONG ullIndex = 0;
2329
2330     ullIndex = (((ULONGLONG)FileID->Cell << 32) | FileID->Volume);
2331
2332     return ullIndex;
2333 }
2334
2335 inline
2336 ULONGLONG
2337 AFSCreateLowIndex( IN AFSFileID *FileID)
2338 {
2339
2340     ULONGLONG ullIndex = 0;
2341
2342     ullIndex = (((ULONGLONG)FileID->Vnode << 32) | FileID->Unique);
2343
2344     return ullIndex;
2345 }
2346
2347 BOOLEAN
2348 AFSCheckAccess( IN ACCESS_MASK DesiredAccess,
2349                 IN ACCESS_MASK GrantedAccess,
2350                 IN BOOLEAN DirectoryEntry)
2351 {
2352
2353     BOOLEAN bAccessGranted = TRUE;
2354
2355     //
2356     // Check if we are asking for read/write and granted only read only
2357     // NOTE: There will be more checks here
2358     //
2359
2360     if( !AFSCheckForReadOnlyAccess( DesiredAccess,
2361                                     DirectoryEntry) &&
2362         AFSCheckForReadOnlyAccess( GrantedAccess,
2363                                    DirectoryEntry))
2364     {
2365
2366         bAccessGranted = FALSE;
2367     }
2368
2369     return bAccessGranted;
2370 }
2371
2372 NTSTATUS
2373 AFSGetDriverStatus( IN AFSDriverStatusRespCB *DriverStatus)
2374 {
2375
2376     NTSTATUS         ntStatus = STATUS_SUCCESS;
2377     AFSDeviceExt    *pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
2378
2379     //
2380     // Start with read
2381     //
2382
2383     DriverStatus->Status = AFS_DRIVER_STATUS_READY;
2384
2385     if( AFSGlobalRoot == NULL)
2386     {
2387
2388         //
2389         // We are not ready
2390         //
2391
2392         DriverStatus->Status = AFS_DRIVER_STATUS_NOT_READY;
2393     }
2394
2395     if( pControlDevExt->Specific.Control.CommServiceCB.IrpPoolControlFlag != POOL_ACTIVE)
2396     {
2397
2398         //
2399         // No service yet
2400         //
2401
2402         DriverStatus->Status = AFS_DRIVER_STATUS_NO_SERVICE;
2403     }
2404
2405     return ntStatus;
2406 }
2407
2408 NTSTATUS
2409 AFSSubstituteSysName( IN UNICODE_STRING *ComponentName,
2410                       IN UNICODE_STRING *SubstituteName,
2411                       IN ULONG StringIndex)
2412 {
2413
2414     NTSTATUS ntStatus = STATUS_SUCCESS;
2415     AFSDeviceExt    *pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
2416     AFSSysNameCB    *pSysName = NULL;
2417     ERESOURCE       *pSysNameLock = NULL;
2418     ULONG            ulIndex = 1;
2419     USHORT           usIndex = 0;
2420     UNICODE_STRING   uniSysName;
2421
2422     __Enter
2423     {
2424
2425 #if defined(_WIN64)
2426
2427         if( IoIs32bitProcess( NULL))
2428         {
2429
2430             pSysNameLock = &pControlDevExt->Specific.Control.SysName32ListLock;
2431
2432             pSysName = pControlDevExt->Specific.Control.SysName32ListHead;
2433         }
2434         else
2435         {
2436
2437             pSysNameLock = &pControlDevExt->Specific.Control.SysName64ListLock;
2438
2439             pSysName = pControlDevExt->Specific.Control.SysName64ListHead;
2440         }
2441 #else
2442
2443         pSysNameLock = &pControlDevExt->Specific.Control.SysName32ListLock;
2444
2445         pSysName = pControlDevExt->Specific.Control.SysName32ListHead;
2446
2447 #endif
2448
2449         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
2450                       AFS_TRACE_LEVEL_VERBOSE,
2451                       "AFSSubstituteSysName Acquiring SysName lock %p SHARED %08lX\n",
2452                       pSysNameLock,
2453                       PsGetCurrentThread()));
2454
2455         AFSAcquireShared( pSysNameLock,
2456                           TRUE);
2457
2458         //
2459         // Find where we are in the list
2460         //
2461
2462         while( pSysName != NULL &&
2463             ulIndex < StringIndex)
2464         {
2465
2466             pSysName = pSysName->fLink;
2467
2468             ulIndex++;
2469         }
2470
2471         if( pSysName == NULL)
2472         {
2473
2474             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2475                           AFS_TRACE_LEVEL_VERBOSE_2,
2476                           "AFSSubstituteSysName No sysname %wZ Status %08lX\n",
2477                           ComponentName,
2478                           STATUS_OBJECT_NAME_NOT_FOUND));
2479
2480             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
2481         }
2482
2483         RtlInitUnicodeString( &uniSysName,
2484                               L"@SYS");
2485         //
2486         // If it is a full component of @SYS then just substitue the
2487         // name in
2488         //
2489
2490         if( RtlCompareUnicodeString( &uniSysName,
2491                                      ComponentName,
2492                                      TRUE) == 0)
2493         {
2494
2495             SubstituteName->Length = pSysName->SysName.Length;
2496             SubstituteName->MaximumLength = SubstituteName->Length;
2497
2498             SubstituteName->Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2499                                                                         SubstituteName->Length,
2500                                                                         AFS_SUBST_BUFFER_TAG);
2501
2502             if( SubstituteName->Buffer == NULL)
2503             {
2504
2505                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2506             }
2507
2508             RtlCopyMemory( SubstituteName->Buffer,
2509                            pSysName->SysName.Buffer,
2510                            pSysName->SysName.Length);
2511         }
2512         else
2513         {
2514
2515             usIndex = 0;
2516
2517             while( ComponentName->Buffer[ usIndex] != L'@')
2518             {
2519
2520                 usIndex++;
2521             }
2522
2523             SubstituteName->Length = (usIndex * sizeof( WCHAR)) + pSysName->SysName.Length;
2524             SubstituteName->MaximumLength = SubstituteName->Length;
2525
2526             SubstituteName->Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2527                                                                         SubstituteName->Length,
2528                                                                         AFS_SUBST_BUFFER_TAG);
2529
2530             if( SubstituteName->Buffer == NULL)
2531             {
2532
2533                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2534             }
2535
2536             RtlCopyMemory( SubstituteName->Buffer,
2537                            ComponentName->Buffer,
2538                            usIndex * sizeof( WCHAR));
2539
2540             RtlCopyMemory( &SubstituteName->Buffer[ usIndex],
2541                            pSysName->SysName.Buffer,
2542                            pSysName->SysName.Length);
2543         }
2544
2545 try_exit:
2546
2547         AFSReleaseResource( pSysNameLock);
2548     }
2549
2550     return ntStatus;
2551 }
2552
2553 NTSTATUS
2554 AFSSubstituteNameInPath( IN OUT UNICODE_STRING *FullPathName,
2555                          IN OUT UNICODE_STRING *ComponentName,
2556                          IN UNICODE_STRING *SubstituteName,
2557                          IN OUT UNICODE_STRING *RemainingPath,
2558                          IN BOOLEAN FreePathName)
2559 {
2560
2561     NTSTATUS ntStatus = STATUS_SUCCESS;
2562     UNICODE_STRING uniPathName;
2563     USHORT usPrefixNameLen = 0;
2564     SHORT  sNameLenDelta = 0;
2565
2566     __Enter
2567     {
2568
2569         //
2570         // If the passed in name can handle the additional length
2571         // then just moves things around
2572         //
2573
2574         sNameLenDelta = SubstituteName->Length - ComponentName->Length;
2575
2576         usPrefixNameLen = (USHORT)(ComponentName->Buffer - FullPathName->Buffer);
2577
2578         if( FullPathName->MaximumLength > FullPathName->Length + sNameLenDelta)
2579         {
2580
2581             if( FullPathName->Length > usPrefixNameLen + ComponentName->Length)
2582             {
2583
2584                 RtlMoveMemory( &FullPathName->Buffer[ ((usPrefixNameLen*sizeof( WCHAR) + SubstituteName->Length)/sizeof( WCHAR))],
2585                                &FullPathName->Buffer[ ((usPrefixNameLen*sizeof( WCHAR) + ComponentName->Length)/sizeof( WCHAR))],
2586                                FullPathName->Length - usPrefixNameLen*sizeof( WCHAR) - ComponentName->Length);
2587             }
2588
2589             RtlCopyMemory( &FullPathName->Buffer[ usPrefixNameLen],
2590                            SubstituteName->Buffer,
2591                            SubstituteName->Length);
2592
2593             FullPathName->Length += sNameLenDelta;
2594
2595             ComponentName->Length += sNameLenDelta;
2596
2597             ComponentName->MaximumLength = ComponentName->Length;
2598
2599             if ( RemainingPath->Buffer)
2600             {
2601
2602                 RemainingPath->Buffer += sNameLenDelta/sizeof( WCHAR);
2603             }
2604
2605             try_return( ntStatus);
2606         }
2607
2608         //
2609         // Need to re-allocate the buffer
2610         //
2611
2612         uniPathName.Length = FullPathName->Length -
2613                                          ComponentName->Length +
2614                                          SubstituteName->Length;
2615
2616         uniPathName.MaximumLength = FullPathName->MaximumLength + PAGE_SIZE;
2617
2618         uniPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2619                                                                 uniPathName.MaximumLength,
2620                                                                 AFS_NAME_BUFFER_FOUR_TAG);
2621
2622         if( uniPathName.Buffer == NULL)
2623         {
2624
2625             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2626         }
2627
2628         usPrefixNameLen = (USHORT)(ComponentName->Buffer - FullPathName->Buffer);
2629
2630         usPrefixNameLen *= sizeof( WCHAR);
2631
2632         RtlZeroMemory( uniPathName.Buffer,
2633                        uniPathName.MaximumLength);
2634
2635         RtlCopyMemory( uniPathName.Buffer,
2636                        FullPathName->Buffer,
2637                        usPrefixNameLen);
2638
2639         RtlCopyMemory( &uniPathName.Buffer[ (usPrefixNameLen/sizeof( WCHAR))],
2640                        SubstituteName->Buffer,
2641                        SubstituteName->Length);
2642
2643         if( FullPathName->Length > usPrefixNameLen + ComponentName->Length)
2644         {
2645
2646             RtlCopyMemory( &uniPathName.Buffer[ (usPrefixNameLen + SubstituteName->Length)/sizeof( WCHAR)],
2647                            &FullPathName->Buffer[ (usPrefixNameLen + ComponentName->Length)/sizeof( WCHAR)],
2648                            FullPathName->Length - usPrefixNameLen - ComponentName->Length);
2649         }
2650
2651         ComponentName->Buffer = uniPathName.Buffer + (ComponentName->Buffer - FullPathName->Buffer);
2652
2653         ComponentName->Length += sNameLenDelta;
2654
2655         ComponentName->MaximumLength = ComponentName->Length;
2656
2657         if ( RemainingPath->Buffer)
2658         {
2659
2660             RemainingPath->Buffer = uniPathName.Buffer
2661                 + (RemainingPath->Buffer - FullPathName->Buffer)
2662                 + sNameLenDelta/sizeof( WCHAR);
2663         }
2664
2665         if( FreePathName)
2666         {
2667             AFSExFreePoolWithTag( FullPathName->Buffer, 0);
2668         }
2669
2670         *FullPathName = uniPathName;
2671
2672 try_exit:
2673
2674         NOTHING;
2675     }
2676
2677     return ntStatus;
2678 }
2679
2680 NTSTATUS
2681 AFSInvalidateVolume( IN AFSVolumeCB *VolumeCB,
2682                      IN ULONG Reason)
2683 {
2684
2685     NTSTATUS ntStatus = STATUS_SUCCESS;
2686     AFSObjectInfoCB *pCurrentObject = NULL;
2687     AFSObjectInfoCB *pNextObject = NULL;
2688     LONG lCount;
2689
2690     __Enter
2691     {
2692
2693         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2694                       AFS_TRACE_LEVEL_VERBOSE,
2695                       "AFSInvalidateVolume Invalidate volume fid %08lX-%08lX-%08lX-%08lX Reason %08lX\n",
2696                       VolumeCB->ObjectInformation.FileId.Cell,
2697                       VolumeCB->ObjectInformation.FileId.Volume,
2698                       VolumeCB->ObjectInformation.FileId.Vnode,
2699                       VolumeCB->ObjectInformation.FileId.Unique,
2700                       Reason));
2701
2702         //
2703         // Depending on the reason for invalidation then perform work on the node
2704         //
2705
2706         switch( Reason)
2707         {
2708
2709             case AFS_INVALIDATE_DELETED:
2710             {
2711
2712                 //
2713                 // Mark this volume as invalid
2714                 //
2715
2716                 SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
2717
2718                 SetFlag( VolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE);
2719
2720                 break;
2721             }
2722         }
2723
2724         AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2725                           TRUE);
2726
2727         //
2728         // Invalidate the volume root directory
2729         //
2730
2731         pCurrentObject = &VolumeCB->ObjectInformation;
2732
2733         if ( pCurrentObject )
2734         {
2735
2736             lCount = AFSObjectInfoIncrement( pCurrentObject,
2737                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2738
2739             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2740                           AFS_TRACE_LEVEL_VERBOSE,
2741                           "AFSInvalidateVolumeObjects Increment count on object %p Cnt %d\n",
2742                           pCurrentObject,
2743                           lCount));
2744
2745             AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2746
2747             AFSInvalidateObject( &pCurrentObject,
2748                                  Reason);
2749
2750             AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2751                               TRUE);
2752
2753             if ( pCurrentObject)
2754             {
2755
2756                 lCount = AFSObjectInfoDecrement( pCurrentObject,
2757                                                  AFS_OBJECT_REFERENCE_INVALIDATION);
2758
2759                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2760                               AFS_TRACE_LEVEL_VERBOSE,
2761                               "AFSInvalidateVolumeObjects Decrement count on object %p Cnt %d\n",
2762                               pCurrentObject,
2763                               lCount));
2764             }
2765         }
2766
2767         //
2768         // Apply invalidation to all other volume objects
2769         //
2770
2771         pCurrentObject = VolumeCB->ObjectInfoListHead;
2772
2773         if ( pCurrentObject)
2774         {
2775
2776             //
2777             // Reference the node so it won't be torn down
2778             //
2779
2780             lCount = AFSObjectInfoIncrement( pCurrentObject,
2781                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2782
2783             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2784                           AFS_TRACE_LEVEL_VERBOSE,
2785                           "AFSInvalidateVolumeObjects Increment count on object %p Cnt %d\n",
2786                           pCurrentObject,
2787                           lCount));
2788         }
2789
2790         while( pCurrentObject != NULL)
2791         {
2792
2793             pNextObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
2794
2795             if ( pNextObject)
2796             {
2797
2798                 //
2799                 // Reference the node so it won't be torn down
2800                 //
2801
2802                 lCount = AFSObjectInfoIncrement( pNextObject,
2803                                                  AFS_OBJECT_REFERENCE_INVALIDATION);
2804
2805                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2806                               AFS_TRACE_LEVEL_VERBOSE,
2807                               "AFSInvalidateVolumeObjects Increment count on object %p Cnt %d\n",
2808                               pNextObject,
2809                               lCount));
2810             }
2811
2812             AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2813
2814             AFSInvalidateObject( &pCurrentObject,
2815                                  Reason);
2816
2817             AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2818                               TRUE);
2819
2820             if ( pCurrentObject )
2821             {
2822
2823                 lCount = AFSObjectInfoDecrement( pCurrentObject,
2824                                                  AFS_OBJECT_REFERENCE_INVALIDATION);
2825
2826                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2827                               AFS_TRACE_LEVEL_VERBOSE,
2828                               "AFSInvalidateVolumeObjects Decrement count on object %p Cnt %d\n",
2829                               pCurrentObject,
2830                               lCount));
2831             }
2832
2833             pCurrentObject = pNextObject;
2834         }
2835
2836         AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2837     }
2838
2839     return ntStatus;
2840 }
2841
2842 VOID
2843 AFSInvalidateAllVolumes( VOID)
2844 {
2845     AFSVolumeCB *pVolumeCB = NULL;
2846     AFSVolumeCB *pNextVolumeCB = NULL;
2847     AFSDeviceExt *pRDRDeviceExt = NULL;
2848     LONG lCount;
2849
2850     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2851
2852     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
2853                   AFS_TRACE_LEVEL_VERBOSE,
2854                   "AFSInvalidateAllVolumes Acquiring RDR VolumeListLock lock %p SHARED %08lX\n",
2855                   &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2856                   PsGetCurrentThread()));
2857
2858     AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2859                       TRUE);
2860
2861     pVolumeCB = pRDRDeviceExt->Specific.RDR.VolumeListHead;
2862
2863     if ( pVolumeCB)
2864     {
2865
2866         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
2867                       AFS_TRACE_LEVEL_VERBOSE,
2868                       "AFSInvalidateAllVolumes Acquiring VolumeRoot ObjectInfoTree lock %p SHARED %08lX\n",
2869                       pVolumeCB->ObjectInfoTree.TreeLock,
2870                       PsGetCurrentThread()));
2871
2872         lCount = AFSVolumeIncrement( pVolumeCB,
2873                                      AFS_VOLUME_REFERENCE_INVALIDATE);
2874
2875         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2876                       AFS_TRACE_LEVEL_VERBOSE,
2877                       "AFSInvalidateAllVolumes Increment count on volume %p Cnt %d\n",
2878                       pVolumeCB,
2879                       lCount));
2880     }
2881
2882     while( pVolumeCB != NULL)
2883     {
2884
2885         pNextVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
2886
2887         if ( pNextVolumeCB)
2888         {
2889
2890             lCount = AFSVolumeIncrement( pNextVolumeCB,
2891                                          AFS_VOLUME_REFERENCE_INVALIDATE);
2892
2893             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2894                           AFS_TRACE_LEVEL_VERBOSE,
2895                           "AFSInvalidateAllVolumes Increment count on volume %p Cnt %d\n",
2896                           pVolumeCB,
2897                           lCount));
2898         }
2899
2900         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
2901
2902         // do I need to hold the volume lock here?
2903
2904         AFSInvalidateVolume( pVolumeCB, AFS_INVALIDATE_EXPIRED);
2905
2906         AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2907                           TRUE);
2908
2909         lCount = AFSVolumeDecrement( pVolumeCB,
2910                                      AFS_VOLUME_REFERENCE_INVALIDATE);
2911
2912         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2913                       AFS_TRACE_LEVEL_VERBOSE,
2914                       "AFSInvalidateAllVolumes Decrement count on volume %p Cnt %d\n",
2915                       pVolumeCB,
2916                       lCount));
2917
2918         pVolumeCB = pNextVolumeCB;
2919     }
2920
2921     AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
2922 }
2923
2924 NTSTATUS
2925 AFSVerifyEntry( IN GUID *AuthGroup,
2926                 IN AFSDirectoryCB *DirEntry,
2927                 IN BOOLEAN bFollowMountPoint)
2928 {
2929
2930     NTSTATUS ntStatus = STATUS_SUCCESS;
2931     AFSDeviceExt *pRDRDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
2932     AFSDirEnumEntry *pDirEnumEntry = NULL;
2933     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
2934     IO_STATUS_BLOCK stIoStatus;
2935
2936     __Enter
2937     {
2938
2939         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2940                       AFS_TRACE_LEVEL_VERBOSE_2,
2941                       "AFSVerifyEntry Verifying entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2942                       &DirEntry->NameInformation.FileName,
2943                       pObjectInfo->FileId.Cell,
2944                       pObjectInfo->FileId.Volume,
2945                       pObjectInfo->FileId.Vnode,
2946                       pObjectInfo->FileId.Unique));
2947
2948         ntStatus = AFSEvaluateTargetByID( pObjectInfo,
2949                                           AuthGroup,
2950                                           bFollowMountPoint ? FALSE : TRUE,
2951                                           &pDirEnumEntry);
2952
2953         if( !NT_SUCCESS( ntStatus))
2954         {
2955
2956             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2957                           AFS_TRACE_LEVEL_ERROR,
2958                           "AFSVerifyEntry Evaluate Target failed %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
2959                           &DirEntry->NameInformation.FileName,
2960                           pObjectInfo->FileId.Cell,
2961                           pObjectInfo->FileId.Volume,
2962                           pObjectInfo->FileId.Vnode,
2963                           pObjectInfo->FileId.Unique,
2964                           ntStatus));
2965
2966             try_return( ntStatus);
2967         }
2968
2969         //
2970         // Check the data version of the file
2971         //
2972
2973         if( pObjectInfo->DataVersion.QuadPart == pDirEnumEntry->DataVersion.QuadPart &&
2974             !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
2975         {
2976
2977             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
2978                           AFS_TRACE_LEVEL_VERBOSE,
2979                           "AFSVerifyEntry No DV change %I64X for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
2980                           pObjectInfo->DataVersion.QuadPart,
2981                           &DirEntry->NameInformation.FileName,
2982                           pObjectInfo->FileId.Cell,
2983                           pObjectInfo->FileId.Volume,
2984                           pObjectInfo->FileId.Vnode,
2985                           pObjectInfo->FileId.Unique));
2986
2987             //
2988             // We are ok, just get out
2989             //
2990
2991             ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2992
2993             try_return( ntStatus = STATUS_SUCCESS);
2994         }
2995
2996         //
2997         // New data version so we will need to process the node based on the type
2998         //
2999
3000         switch( pDirEnumEntry->FileType)
3001         {
3002
3003             case AFS_FILE_TYPE_MOUNTPOINT:
3004             {
3005
3006                 //
3007                 // For a mount point we need to ensure the target is the same
3008                 //
3009
3010                 if( !AFSIsEqualFID( &pObjectInfo->TargetFileId,
3011                                     &pDirEnumEntry->TargetFileId))
3012                 {
3013
3014                 }
3015
3016                 //
3017                 // Update the metadata for the entry
3018                 //
3019
3020                 ntStatus = AFSUpdateMetaData( DirEntry,
3021                                               pDirEnumEntry);
3022
3023                 if( NT_SUCCESS( ntStatus))
3024                 {
3025
3026                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3027                                   AFS_TRACE_LEVEL_VERBOSE,
3028                                   "AFSVerifyEntry MountPoint FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
3029                                   pObjectInfo->FileId.Cell,
3030                                   pObjectInfo->FileId.Volume,
3031                                   pObjectInfo->FileId.Vnode,
3032                                   pObjectInfo->FileId.Unique));
3033
3034                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3035                 }
3036
3037                 break;
3038             }
3039
3040             case AFS_FILE_TYPE_SYMLINK:
3041             {
3042
3043                 //
3044                 // Update the metadata for the entry
3045                 //
3046
3047                 ntStatus = AFSUpdateMetaData( DirEntry,
3048                                               pDirEnumEntry);
3049
3050                 if( NT_SUCCESS( ntStatus))
3051                 {
3052
3053                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3054                                   AFS_TRACE_LEVEL_VERBOSE,
3055                                   "AFSVerifyEntry Symlink FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
3056                                   pObjectInfo->FileId.Cell,
3057                                   pObjectInfo->FileId.Volume,
3058                                   pObjectInfo->FileId.Vnode,
3059                                   pObjectInfo->FileId.Unique));
3060
3061                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3062                 }
3063
3064                 break;
3065             }
3066
3067             case AFS_FILE_TYPE_FILE:
3068             {
3069                 FILE_OBJECT * pCCFileObject = NULL;
3070
3071                 if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
3072                 {
3073
3074                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3075                                   AFS_TRACE_LEVEL_VERBOSE,
3076                                   "AFSVerifyEntry Clearing VERIFY_DATA flag %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3077                                   &DirEntry->NameInformation.FileName,
3078                                   pObjectInfo->FileId.Cell,
3079                                   pObjectInfo->FileId.Volume,
3080                                   pObjectInfo->FileId.Vnode,
3081                                   pObjectInfo->FileId.Unique));
3082
3083                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
3084                 }
3085
3086                 if( pObjectInfo->Fcb != NULL)
3087                 {
3088
3089                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3090                                   AFS_TRACE_LEVEL_VERBOSE,
3091                                   "AFSVerifyEntry Flush/purge entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3092                                   &DirEntry->NameInformation.FileName,
3093                                   pObjectInfo->FileId.Cell,
3094                                   pObjectInfo->FileId.Volume,
3095                                   pObjectInfo->FileId.Vnode,
3096                                   pObjectInfo->FileId.Unique));
3097
3098                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
3099                                   AFS_TRACE_LEVEL_VERBOSE,
3100                                   "AFSVerifyEntry Acquiring Fcb lock %p EXCL %08lX\n",
3101                                   &pObjectInfo->Fcb->NPFcb->Resource,
3102                                   PsGetCurrentThread()));
3103
3104                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Resource,
3105                                     TRUE);
3106
3107                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
3108                                   AFS_TRACE_LEVEL_VERBOSE,
3109                                   "AFSVerifyEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
3110                                   &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3111                                   PsGetCurrentThread()));
3112
3113                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3114                                     TRUE);
3115
3116                     __try
3117                     {
3118
3119                         CcFlushCache( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
3120                                       NULL,
3121                                       0,
3122                                       &stIoStatus);
3123
3124                         if( !NT_SUCCESS( stIoStatus.Status))
3125                         {
3126
3127                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
3128                                           AFS_TRACE_LEVEL_ERROR,
3129                                           "AFSVerifyEntry CcFlushCache failure %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
3130                                           &DirEntry->NameInformation.FileName,
3131                                           pObjectInfo->FileId.Cell,
3132                                           pObjectInfo->FileId.Volume,
3133                                           pObjectInfo->FileId.Vnode,
3134                                           pObjectInfo->FileId.Unique,
3135                                           stIoStatus.Status,
3136                                           stIoStatus.Information));
3137
3138                             ntStatus = stIoStatus.Status;
3139                         }
3140
3141                         if ( pObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
3142                         {
3143
3144                             if ( !CcPurgeCacheSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
3145                                                        NULL,
3146                                                        0,
3147                                                        FALSE))
3148                             {
3149
3150                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
3151                                               AFS_TRACE_LEVEL_WARNING,
3152                                               "AFSVerifyEntry CcPurgeCacheSection failure %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3153                                               &DirEntry->NameInformation.FileName,
3154                                               pObjectInfo->FileId.Cell,
3155                                               pObjectInfo->FileId.Volume,
3156                                               pObjectInfo->FileId.Vnode,
3157                                               pObjectInfo->FileId.Unique));
3158
3159                                 SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
3160                             }
3161                         }
3162                     }
3163                     __except( EXCEPTION_EXECUTE_HANDLER)
3164                     {
3165                         ntStatus = GetExceptionCode();
3166
3167                         AFSDbgTrace(( 0,
3168                                       0,
3169                                       "EXCEPTION - AFSVerifyEntry CcFlushCache or CcPurgeCacheSection %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
3170                                       &DirEntry->NameInformation.FileName,
3171                                       pObjectInfo->FileId.Cell,
3172                                       pObjectInfo->FileId.Volume,
3173                                       pObjectInfo->FileId.Vnode,
3174                                       pObjectInfo->FileId.Unique,
3175                                       ntStatus));
3176
3177                         SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
3178                     }
3179
3180                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
3181                                   AFS_TRACE_LEVEL_VERBOSE,
3182                                   "AFSVerifyEntry Releasing Fcb SectionObject lock %p EXCL %08lX\n",
3183                                   &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3184                                   PsGetCurrentThread()));
3185
3186                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->SectionObjectResource);
3187
3188                     if( !BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
3189                     {
3190
3191                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
3192                                       AFS_TRACE_LEVEL_VERBOSE,
3193                                       "AFSVerifyEntry Releasing Fcb lock %p EXCL %08lX\n",
3194                                       &pObjectInfo->Fcb->NPFcb->Resource,
3195                                       PsGetCurrentThread()));
3196
3197                         AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Resource);
3198
3199                         AFSFlushExtents( pObjectInfo->Fcb,
3200                                          AuthGroup);
3201
3202                         //
3203                         // Acquire the Fcb to purge the cache
3204                         //
3205
3206                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
3207                                       AFS_TRACE_LEVEL_VERBOSE,
3208                                       "AFSVerifyEntry Acquiring Fcb lock %p EXCL %08lX\n",
3209                                       &pObjectInfo->Fcb->NPFcb->Resource,
3210                                       PsGetCurrentThread()));
3211
3212                         AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Resource,
3213                                         TRUE);
3214                     }
3215
3216                     //
3217                     // Update the metadata for the entry
3218                     //
3219
3220                     ntStatus = AFSUpdateMetaData( DirEntry,
3221                                                   pDirEnumEntry);
3222
3223                     if( !NT_SUCCESS( ntStatus))
3224                     {
3225
3226                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3227                                       AFS_TRACE_LEVEL_ERROR,
3228                                       "AFSVerifyEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX ntStatus %08lX\n",
3229                                       &DirEntry->NameInformation.FileName,
3230                                       pObjectInfo->FileId.Cell,
3231                                       pObjectInfo->FileId.Volume,
3232                                       pObjectInfo->FileId.Vnode,
3233                                       pObjectInfo->FileId.Unique,
3234                                       ntStatus));
3235                     }
3236                     else
3237                     {
3238
3239                         //
3240                         // Update file sizes
3241                         //
3242
3243                         pObjectInfo->Fcb->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
3244                         pObjectInfo->Fcb->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
3245                         pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
3246
3247                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
3248                                       AFS_TRACE_LEVEL_VERBOSE,
3249                                       "AFSVerifyEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
3250                                       &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3251                                       PsGetCurrentThread()));
3252
3253                         AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3254                                         TRUE);
3255
3256                         __try
3257                         {
3258
3259                             pCCFileObject = CcGetFileObjectFromSectionPtrs( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers);
3260
3261                             if ( pCCFileObject != NULL)
3262                             {
3263                                 CcSetFileSizes( pCCFileObject,
3264                                                 (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
3265                             }
3266                         }
3267                         __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()))
3268                         {
3269
3270                             ntStatus = GetExceptionCode();
3271
3272                             AFSDbgTrace(( 0,
3273                                           0,
3274                                           "EXCEPTION - AFSVerifyEntry CcSetFileSized failed FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
3275                                           pObjectInfo->FileId.Cell,
3276                                           pObjectInfo->FileId.Volume,
3277                                           pObjectInfo->FileId.Vnode,
3278                                           pObjectInfo->FileId.Unique,
3279                                           ntStatus));
3280                         }
3281
3282                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
3283                                       AFS_TRACE_LEVEL_VERBOSE,
3284                                       "AFSVerifyEntry Releasing Fcb SectionObject lock %p EXCL %08lX\n",
3285                                       &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3286                                       PsGetCurrentThread()));
3287
3288                         AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->SectionObjectResource);
3289                     }
3290
3291                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
3292                                   AFS_TRACE_LEVEL_VERBOSE,
3293                                   "AFSVerifyEntry Releasing Fcb lock %p EXCL %08lX\n",
3294                                   &pObjectInfo->Fcb->NPFcb->Resource,
3295                                   PsGetCurrentThread()));
3296
3297                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Resource);
3298                 }
3299                 else
3300                 {
3301
3302                     //
3303                     // Update the metadata for the entry
3304                     //
3305
3306                     ntStatus = AFSUpdateMetaData( DirEntry,
3307                                                   pDirEnumEntry);
3308
3309                     if( !NT_SUCCESS( ntStatus))
3310                     {
3311
3312                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3313                                       AFS_TRACE_LEVEL_ERROR,
3314                                       "AFSVerifyEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX ntStatus %08lX\n",
3315                                       &DirEntry->NameInformation.FileName,
3316                                       pObjectInfo->FileId.Cell,
3317                                       pObjectInfo->FileId.Volume,
3318                                       pObjectInfo->FileId.Vnode,
3319                                       pObjectInfo->FileId.Unique,
3320                                       ntStatus));
3321                     }
3322                     else
3323                     {
3324
3325                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3326                                       AFS_TRACE_LEVEL_WARNING,
3327                                       "AFSVerifyEntry Fcb NULL %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3328                                       &DirEntry->NameInformation.FileName,
3329                                       pObjectInfo->FileId.Cell,
3330                                       pObjectInfo->FileId.Volume,
3331                                       pObjectInfo->FileId.Vnode,
3332                                       pObjectInfo->FileId.Unique));
3333                     }
3334                 }
3335
3336                 if ( NT_SUCCESS( ntStatus))
3337                 {
3338
3339                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3340                                   AFS_TRACE_LEVEL_VERBOSE,
3341                                   "AFSVerifyEntry File FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
3342                                   pObjectInfo->FileId.Cell,
3343                                   pObjectInfo->FileId.Volume,
3344                                   pObjectInfo->FileId.Vnode,
3345                                   pObjectInfo->FileId.Unique));
3346
3347                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3348                 }
3349                 break;
3350             }
3351
3352             case AFS_FILE_TYPE_DIRECTORY:
3353             {
3354
3355                 //
3356                 // For a directory or root entry flush the content of
3357                 // the directory enumeration.
3358                 //
3359
3360                 if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
3361                 {
3362
3363                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3364                                   AFS_TRACE_LEVEL_VERBOSE_2,
3365                                   "AFSVerifyEntry Validating directory content for entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3366                                   &DirEntry->NameInformation.FileName,
3367                                   pObjectInfo->FileId.Cell,
3368                                   pObjectInfo->FileId.Volume,
3369                                   pObjectInfo->FileId.Vnode,
3370                                   pObjectInfo->FileId.Unique));
3371
3372                     AFSAcquireExcl( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3373                                     TRUE);
3374
3375                     ntStatus = AFSValidateDirectoryCache( pObjectInfo,
3376                                                           AuthGroup);
3377
3378                     AFSReleaseResource( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
3379
3380                     if ( !NT_SUCCESS( ntStatus))
3381                     {
3382
3383                         try_return( ntStatus);
3384                     }
3385                 }
3386
3387                 //
3388                 // Update the metadata for the entry
3389                 //
3390
3391                 ntStatus = AFSUpdateMetaData( DirEntry,
3392                                               pDirEnumEntry);
3393
3394                 if( NT_SUCCESS( ntStatus))
3395                 {
3396
3397                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3398                                   AFS_TRACE_LEVEL_VERBOSE,
3399                                   "AFSVerifyEntry Directory FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
3400                                   pObjectInfo->FileId.Cell,
3401                                   pObjectInfo->FileId.Volume,
3402                                   pObjectInfo->FileId.Vnode,
3403                                   pObjectInfo->FileId.Unique));
3404
3405                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3406                 }
3407
3408                 break;
3409             }
3410
3411             case AFS_FILE_TYPE_DFSLINK:
3412             {
3413
3414                 UNICODE_STRING uniTargetName;
3415
3416                 //
3417                 // For a DFS link need to check the target name has not changed
3418                 //
3419
3420                 uniTargetName.Length = (USHORT)pDirEnumEntry->TargetNameLength;
3421
3422                 uniTargetName.MaximumLength = uniTargetName.Length;
3423
3424                 uniTargetName.Buffer = (WCHAR *)((char *)pDirEnumEntry + pDirEnumEntry->TargetNameOffset);
3425
3426                 AFSAcquireExcl( &DirEntry->NonPaged->Lock,
3427                                 TRUE);
3428
3429                 if( DirEntry->NameInformation.TargetName.Length == 0 ||
3430                     RtlCompareUnicodeString( &uniTargetName,
3431                                              &DirEntry->NameInformation.TargetName,
3432                                              TRUE) != 0)
3433                 {
3434
3435                     //
3436                     // Update the target name
3437                     //
3438
3439                     ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
3440                                                     &DirEntry->Flags,
3441                                                     uniTargetName.Buffer,
3442                                                     uniTargetName.Length);
3443
3444                     if( !NT_SUCCESS( ntStatus))
3445                     {
3446
3447                         AFSReleaseResource( &DirEntry->NonPaged->Lock);
3448
3449                         break;
3450                     }
3451                 }
3452
3453                 AFSReleaseResource( &DirEntry->NonPaged->Lock);
3454
3455                 //
3456                 // Update the metadata for the entry
3457                 //
3458
3459                 ntStatus = AFSUpdateMetaData( DirEntry,
3460                                               pDirEnumEntry);
3461
3462                 if( NT_SUCCESS( ntStatus))
3463                 {
3464
3465                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3466                                   AFS_TRACE_LEVEL_VERBOSE,
3467                                   "AFSVerifyEntry DFSLink FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
3468                                   pObjectInfo->FileId.Cell,
3469                                   pObjectInfo->FileId.Volume,
3470                                   pObjectInfo->FileId.Vnode,
3471                                   pObjectInfo->FileId.Unique));
3472
3473                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3474                 }
3475
3476                 break;
3477             }
3478
3479             default:
3480
3481                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3482                               AFS_TRACE_LEVEL_WARNING,
3483                               "AFSVerifyEntry Attempt to verify node of type %d %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3484                               pObjectInfo->FileType,
3485                               &DirEntry->NameInformation.FileName,
3486                               pObjectInfo->FileId.Cell,
3487                               pObjectInfo->FileId.Volume,
3488                               pObjectInfo->FileId.Vnode,
3489                               pObjectInfo->FileId.Unique));
3490
3491                 break;
3492         }
3493
3494  try_exit:
3495
3496         if( pDirEnumEntry != NULL)
3497         {
3498
3499             AFSExFreePoolWithTag( pDirEnumEntry, AFS_GENERIC_MEMORY_2_TAG);
3500         }
3501     }
3502
3503     return ntStatus;
3504 }
3505
3506 NTSTATUS
3507 AFSSetVolumeState( IN AFSVolumeStatusCB *VolumeStatus)
3508 {
3509
3510     NTSTATUS ntStatus = STATUS_SUCCESS;
3511     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
3512     ULONGLONG   ullIndex = 0;
3513     AFSVolumeCB *pVolumeCB = NULL;
3514     LONG lCount;
3515
3516     __Enter
3517     {
3518
3519         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3520                       AFS_TRACE_LEVEL_VERBOSE,
3521                       "AFSSetVolumeState Marking volume state %d Volume Cell %08lX Volume %08lX\n",
3522                       VolumeStatus->Online,
3523                       VolumeStatus->FileID.Cell,
3524                       VolumeStatus->FileID.Volume));
3525
3526         //
3527         // Need to locate the Fcb for the directory to purge
3528         //
3529
3530         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
3531                       AFS_TRACE_LEVEL_VERBOSE,
3532                       "AFSSetVolumeState Acquiring RDR VolumeTreeLock lock %p SHARED %08lX\n",
3533                       &pDevExt->Specific.RDR.VolumeTreeLock,
3534                       PsGetCurrentThread()));
3535
3536         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
3537
3538         //
3539         // Locate the volume node
3540         //
3541
3542         ullIndex = AFSCreateHighIndex( &VolumeStatus->FileID);
3543
3544         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
3545                                        ullIndex,
3546                                        (AFSBTreeEntry **)&pVolumeCB);
3547
3548         if( pVolumeCB != NULL)
3549         {
3550
3551             lCount = AFSVolumeIncrement( pVolumeCB,
3552                                          AFS_VOLUME_REFERENCE_INVALIDATE);
3553
3554             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
3555                           AFS_TRACE_LEVEL_VERBOSE,
3556                           "AFSSetVolumeState Increment count on volume %p Cnt %d\n",
3557                           pVolumeCB,
3558                           lCount));
3559
3560             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3561
3562             //
3563             // Set the volume state accordingly
3564             //
3565
3566             if( VolumeStatus->Online)
3567             {
3568
3569                 InterlockedAnd( (LONG *)&(pVolumeCB->Flags), ~AFS_VOLUME_FLAGS_OFFLINE);
3570             }
3571             else
3572             {
3573
3574                 InterlockedOr( (LONG *)&(pVolumeCB->Flags), AFS_VOLUME_FLAGS_OFFLINE);
3575             }
3576         }
3577     }
3578
3579     return ntStatus;
3580 }
3581
3582 NTSTATUS
3583 AFSSetNetworkState( IN AFSNetworkStatusCB *NetworkStatus)
3584 {
3585
3586     NTSTATUS ntStatus = STATUS_SUCCESS;
3587
3588     __Enter
3589     {
3590
3591         if( AFSGlobalRoot == NULL)
3592         {
3593
3594             try_return( ntStatus);
3595         }
3596
3597         AFSAcquireExcl( AFSGlobalRoot->VolumeLock,
3598                         TRUE);
3599
3600         //
3601         // Set the network state according to the information
3602         //
3603
3604         if( NetworkStatus->Online)
3605         {
3606
3607             ClearFlag( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE);
3608         }
3609         else
3610         {
3611
3612             SetFlag( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE);
3613         }
3614
3615         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3616
3617 try_exit:
3618
3619         NOTHING;
3620     }
3621
3622     return ntStatus;
3623 }
3624
3625 NTSTATUS
3626 AFSValidateDirectoryCache( IN AFSObjectInfoCB *ObjectInfo,
3627                            IN GUID *AuthGroup)
3628 {
3629
3630     NTSTATUS ntStatus = STATUS_SUCCESS;
3631     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
3632     BOOLEAN  bAcquiredLock = FALSE;
3633     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
3634
3635     __Enter
3636     {
3637
3638         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3639                       AFS_TRACE_LEVEL_VERBOSE,
3640                       "AFSValidateDirectoryCache Validating content for FID %08lX-%08lX-%08lX-%08lX\n",
3641                       ObjectInfo->FileId.Cell,
3642                       ObjectInfo->FileId.Volume,
3643                       ObjectInfo->FileId.Vnode,
3644                       ObjectInfo->FileId.Unique));
3645
3646         if( !ExIsResourceAcquiredLite( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock))
3647         {
3648
3649             AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
3650                           AFS_TRACE_LEVEL_VERBOSE,
3651                           "AFSValidateDirectoryCache Acquiring DirectoryNodeHdr.TreeLock lock %p EXCL %08lX\n",
3652                           ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3653                           PsGetCurrentThread()));
3654
3655             AFSAcquireExcl( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3656                             TRUE);
3657
3658             bAcquiredLock = TRUE;
3659         }
3660
3661         //
3662         // Check for inconsistency between DirectoryNodeList and DirectoryNodeCount
3663         //
3664
3665         if ( ObjectInfo->Specific.Directory.DirectoryNodeListHead == NULL &&
3666              ObjectInfo->Specific.Directory.DirectoryNodeCount > 0)
3667         {
3668
3669             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3670                           AFS_TRACE_LEVEL_ERROR,
3671                           "AFSValidateDirectoryCache Empty Node List but Non-Zero Node Count %d for dir FID %08lX-%08lX-%08lX-%08lX\n",
3672                           ObjectInfo->Specific.Directory.DirectoryNodeCount,
3673                           ObjectInfo->FileId.Cell,
3674                           ObjectInfo->FileId.Volume,
3675                           ObjectInfo->FileId.Vnode,
3676                           ObjectInfo->FileId.Unique));
3677         }
3678
3679         //
3680         // Reset the directory list information by clearing all valid entries
3681         //
3682
3683         pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
3684
3685         while( pCurrentDirEntry != NULL)
3686         {
3687
3688             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
3689
3690             if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_FAKE))
3691             {
3692
3693                 //
3694                 // If this entry has been deleted then process it here
3695                 //
3696
3697                 if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED) &&
3698                     pCurrentDirEntry->DirOpenReferenceCount <= 0 &&
3699                     pCurrentDirEntry->NameArrayReferenceCount <= 0)
3700                 {
3701
3702                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3703                                   AFS_TRACE_LEVEL_VERBOSE,
3704                                   "AFSValidateDirectoryCache Deleting dir entry %p name %wZ\n",
3705                                   pCurrentDirEntry,
3706                                   &pCurrentDirEntry->NameInformation.FileName));
3707
3708                     AFSDeleteDirEntry( ObjectInfo,
3709                                        &pCurrentDirEntry);
3710                 }
3711                 else
3712                 {
3713
3714                     ClearFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_VALID);
3715
3716                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3717                                   AFS_TRACE_LEVEL_VERBOSE,
3718                                   "AFSValidateDirectoryCache Clear VALID flag on DE %p Reference count %d\n",
3719                                   pCurrentDirEntry,
3720                                   pCurrentDirEntry->DirOpenReferenceCount));
3721
3722                     //
3723                     // We pull the short name from the parent tree since it could change below
3724                     //
3725
3726                     if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME))
3727                     {
3728
3729                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3730                                       AFS_TRACE_LEVEL_VERBOSE,
3731                                       "AFSValidateDirectoryCache Removing DE %p (%08lX) from shortname tree for %wZ\n",
3732                                       pCurrentDirEntry,
3733                                       pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex,
3734                                       &pCurrentDirEntry->NameInformation.FileName));
3735
3736                         AFSRemoveShortNameDirEntry( &ObjectInfo->Specific.Directory.ShortNameTree,
3737                                                     pCurrentDirEntry);
3738
3739                         ClearFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3740                     }
3741                 }
3742             }
3743
3744             pCurrentDirEntry = pNextDirEntry;
3745         }
3746
3747         //
3748         // Reget the directory contents
3749         //
3750
3751         ntStatus = AFSVerifyDirectoryContent( ObjectInfo,
3752                                               AuthGroup);
3753
3754         if ( !NT_SUCCESS( ntStatus))
3755         {
3756             try_return( ntStatus);
3757         }
3758
3759         //
3760         // Now start again and tear down any entries not valid
3761         //
3762
3763         pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
3764
3765         while( pCurrentDirEntry != NULL)
3766         {
3767
3768             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
3769
3770             if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_VALID))
3771             {
3772
3773                 if( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
3774                     !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME) &&
3775                     pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex > 0)
3776                 {
3777
3778                     if( ObjectInfo->Specific.Directory.ShortNameTree == NULL)
3779                     {
3780
3781                         ObjectInfo->Specific.Directory.ShortNameTree = pCurrentDirEntry;
3782
3783                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3784                                       AFS_TRACE_LEVEL_VERBOSE,
3785                                       "AFSValidateDirectoryCache Insert DE %p to head of shortname tree for %wZ\n",
3786                                       pCurrentDirEntry,
3787                                       &pCurrentDirEntry->NameInformation.FileName));
3788
3789                         SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3790                     }
3791                     else
3792                     {
3793
3794                         if( !NT_SUCCESS( AFSInsertShortNameDirEntry( ObjectInfo->Specific.Directory.ShortNameTree,
3795                                                                      pCurrentDirEntry)))
3796                         {
3797                             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3798                                           AFS_TRACE_LEVEL_VERBOSE,
3799                                           "AFSValidateDirectoryCache Failed to insert DE %p (%08lX) to shortname tree for %wZ\n",
3800                                           pCurrentDirEntry,
3801                                           pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex,
3802                                           &pCurrentDirEntry->NameInformation.FileName));
3803                         }
3804                         else
3805                         {
3806                             SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3807
3808                             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3809                                           AFS_TRACE_LEVEL_VERBOSE,
3810                                           "AFSValidateDirectoryCache Insert DE %p to shortname tree for %wZ\n",
3811                                           pCurrentDirEntry,
3812                                           &pCurrentDirEntry->NameInformation.FileName));
3813                         }
3814                     }
3815                 }
3816
3817                 pCurrentDirEntry = pNextDirEntry;
3818
3819                 continue;
3820             }
3821
3822             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3823                           AFS_TRACE_LEVEL_VERBOSE,
3824                           "AFSValidateDirectoryCache Processing INVALID DE %p Reference count %d\n",
3825                           pCurrentDirEntry,
3826                           pCurrentDirEntry->DirOpenReferenceCount));
3827
3828             if( pCurrentDirEntry->DirOpenReferenceCount <= 0 &&
3829                 pCurrentDirEntry->NameArrayReferenceCount <= 0)
3830             {
3831
3832                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3833                               AFS_TRACE_LEVEL_VERBOSE,
3834                               "AFSValidateDirectoryCache Deleting dir entry %wZ from parent FID %08lX-%08lX-%08lX-%08lX\n",
3835                               &pCurrentDirEntry->NameInformation.FileName,
3836                               ObjectInfo->FileId.Cell,
3837                               ObjectInfo->FileId.Volume,
3838                               ObjectInfo->FileId.Vnode,
3839                               ObjectInfo->FileId.Unique));
3840
3841                 AFSDeleteDirEntry( ObjectInfo,
3842                                    &pCurrentDirEntry);
3843             }
3844             else
3845             {
3846
3847                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
3848                               AFS_TRACE_LEVEL_VERBOSE,
3849                               "AFSValidateDirectoryCache Setting dir entry %p Name %wZ DELETED in parent FID %08lX-%08lX-%08lX-%08lX\n",
3850                               pCurrentDirEntry,
3851                               &pCurrentDirEntry->NameInformation.FileName,
3852                               ObjectInfo->FileId.Cell,
3853                               ObjectInfo->FileId.Volume,
3854                               ObjectInfo->FileId.Vnode,
3855                               ObjectInfo->FileId.Unique));
3856
3857                 SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
3858
3859                 AFSRemoveNameEntry( ObjectInfo,
3860                                     pCurrentDirEntry);
3861             }
3862
3863             pCurrentDirEntry = pNextDirEntry;
3864         }
3865
3866 #if DBG
3867         if( !AFSValidateDirList( ObjectInfo))
3868         {
3869
3870             AFSPrint("AFSValidateDirectoryCache Invalid count ...\n");
3871         }
3872 #endif
3873
3874 try_exit:
3875
3876         if( bAcquiredLock)
3877         {
3878
3879             AFSReleaseResource( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
3880         }
3881     }
3882
3883     return ntStatus;
3884 }
3885
3886 BOOLEAN
3887 AFSIsVolumeFID( IN AFSFileID *FileID)
3888 {
3889
3890     BOOLEAN bIsVolume = FALSE;
3891
3892     if( FileID->Vnode == 1 &&
3893         FileID->Unique == 1)
3894     {
3895
3896         bIsVolume = TRUE;
3897     }
3898
3899     return bIsVolume;
3900 }
3901
3902 BOOLEAN
3903 AFSIsFinalNode( IN AFSFcb *Fcb)
3904 {
3905
3906     BOOLEAN bIsFinalNode = FALSE;
3907
3908     if( Fcb->Header.NodeTypeCode == AFS_ROOT_FCB ||
3909         Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB ||
3910         Fcb->Header.NodeTypeCode == AFS_FILE_FCB ||
3911         Fcb->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
3912         Fcb->Header.NodeTypeCode == AFS_INVALID_FCB )
3913     {
3914
3915         bIsFinalNode = TRUE;
3916     }
3917     else
3918     {
3919
3920         ASSERT( Fcb->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
3921                 Fcb->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB);
3922     }
3923
3924     return bIsFinalNode;
3925 }
3926
3927 NTSTATUS
3928 AFSUpdateMetaData( IN AFSDirectoryCB *DirEntry,
3929                    IN AFSDirEnumEntry *DirEnumEntry)
3930 {
3931
3932     NTSTATUS ntStatus = STATUS_SUCCESS;
3933     UNICODE_STRING uniTargetName;
3934     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
3935
3936     __Enter
3937     {
3938
3939         pObjectInfo->TargetFileId = DirEnumEntry->TargetFileId;
3940
3941         pObjectInfo->Expiration = DirEnumEntry->Expiration;
3942
3943         pObjectInfo->DataVersion = DirEnumEntry->DataVersion;
3944
3945         pObjectInfo->FileType = DirEnumEntry->FileType;
3946
3947         pObjectInfo->CreationTime = DirEnumEntry->CreationTime;
3948
3949         pObjectInfo->LastAccessTime = DirEnumEntry->LastAccessTime;
3950
3951         pObjectInfo->LastWriteTime = DirEnumEntry->LastWriteTime;
3952
3953         pObjectInfo->ChangeTime = DirEnumEntry->ChangeTime;
3954
3955         pObjectInfo->EndOfFile = DirEnumEntry->EndOfFile;
3956
3957         pObjectInfo->AllocationSize = DirEnumEntry->AllocationSize;
3958
3959         pObjectInfo->FileAttributes = DirEnumEntry->FileAttributes;
3960
3961         if( pObjectInfo->FileType == AFS_FILE_TYPE_MOUNTPOINT ||
3962             pObjectInfo->FileType == AFS_FILE_TYPE_DFSLINK)
3963         {
3964
3965             pObjectInfo->FileAttributes |= (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
3966         }
3967
3968         if( pObjectInfo->FileType == AFS_FILE_TYPE_SYMLINK)
3969         {
3970
3971             if ( pObjectInfo->FileAttributes == FILE_ATTRIBUTE_NORMAL)
3972             {
3973
3974                 pObjectInfo->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
3975             }
3976             else
3977             {
3978
3979                 pObjectInfo->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
3980             }
3981         }
3982
3983         pObjectInfo->EaSize = DirEnumEntry->EaSize;
3984
3985         pObjectInfo->Links = DirEnumEntry->Links;
3986
3987         if( DirEnumEntry->TargetNameLength > 0 &&
3988             ( DirEntry->NameInformation.TargetName.Length != DirEnumEntry->TargetNameLength ||
3989               DirEntry->ObjectInformation->DataVersion.QuadPart != DirEnumEntry->DataVersion.QuadPart))
3990         {
3991
3992             //
3993             // Update the target name information if needed
3994             //
3995
3996             uniTargetName.Length = (USHORT)DirEnumEntry->TargetNameLength;
3997
3998             uniTargetName.MaximumLength = uniTargetName.Length;
3999
4000             uniTargetName.Buffer = (WCHAR *)((char *)DirEnumEntry + DirEnumEntry->TargetNameOffset);
4001
4002             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
4003                             TRUE);
4004
4005             if( DirEntry->NameInformation.TargetName.Length == 0 ||
4006                 RtlCompareUnicodeString( &uniTargetName,
4007                                          &DirEntry->NameInformation.TargetName,
4008                                          TRUE) != 0)
4009             {
4010
4011                 //
4012                 // Update the target name
4013                 //
4014
4015                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
4016                                                 &DirEntry->Flags,
4017                                                 uniTargetName.Buffer,
4018                                                 uniTargetName.Length);
4019
4020                 if( !NT_SUCCESS( ntStatus))
4021                 {
4022
4023                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
4024
4025                     try_return( ntStatus);
4026                 }
4027             }
4028
4029             AFSReleaseResource( &DirEntry->NonPaged->Lock);
4030         }
4031         else if( DirEntry->NameInformation.TargetName.Length > 0 &&
4032                  DirEntry->ObjectInformation->DataVersion.QuadPart != DirEnumEntry->DataVersion.QuadPart)
4033         {
4034
4035             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
4036                             TRUE);
4037
4038             if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER) &&
4039                 DirEntry->NameInformation.TargetName.Buffer != NULL)
4040             {
4041                 AFSExFreePoolWithTag( DirEntry->NameInformation.TargetName.Buffer, AFS_NAME_BUFFER_FIVE_TAG);
4042             }
4043
4044             ClearFlag( DirEntry->Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER);
4045
4046             DirEntry->NameInformation.TargetName.Length = 0;
4047             DirEntry->NameInformation.TargetName.MaximumLength = 0;
4048             DirEntry->NameInformation.TargetName.Buffer = NULL;
4049
4050             AFSReleaseResource( &DirEntry->NonPaged->Lock);
4051         }
4052
4053 try_exit:
4054
4055         NOTHING;
4056     }
4057
4058     return ntStatus;
4059 }
4060
4061 NTSTATUS
4062 AFSValidateEntry( IN AFSDirectoryCB *DirEntry,
4063                   IN GUID *AuthGroup,
4064                   IN BOOLEAN FastCall,
4065                   IN BOOLEAN bSafeToPurge)
4066 {
4067
4068     NTSTATUS ntStatus = STATUS_SUCCESS;
4069     AFSDeviceExt *pRDRDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
4070     LARGE_INTEGER liSystemTime;
4071     AFSDirEnumEntry *pDirEnumEntry = NULL;
4072     AFSFcb *pCurrentFcb = NULL;
4073     BOOLEAN bReleaseFcb = FALSE;
4074     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
4075
4076     __Enter
4077     {
4078
4079         //
4080         // If we have an Fcb hanging off the directory entry then be sure to acquire the locks in the
4081         // correct order
4082         //
4083
4084         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4085                       AFS_TRACE_LEVEL_VERBOSE_2,
4086                       "AFSValidateEntry Validating entry %wZ FID %08lX-%08lX-%08lX-%08lX FastCall %u\n",
4087                       &DirEntry->NameInformation.FileName,
4088                       pObjectInfo->FileId.Cell,
4089                       pObjectInfo->FileId.Volume,
4090                       pObjectInfo->FileId.Vnode,
4091                       pObjectInfo->FileId.Unique,
4092                       FastCall));
4093
4094         //
4095         // If this is a fake node then bail since the service knows nothing about it
4096         //
4097
4098         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_FAKE))
4099         {
4100
4101             try_return( ntStatus);
4102         }
4103
4104         //
4105         // This routine ensures that the current entry is valid by:
4106         //
4107         //      1) Checking that the expiration time is non-zero and after where we
4108         //         currently are
4109         //
4110
4111         KeQuerySystemTime( &liSystemTime);
4112
4113         if( !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED) &&
4114             !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY) &&
4115             !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA) &&
4116             pObjectInfo->Expiration.QuadPart >= liSystemTime.QuadPart)
4117         {
4118
4119             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4120                           AFS_TRACE_LEVEL_VERBOSE_2,
4121                           "AFSValidateEntry Directory entry %wZ FID %08lX-%08lX-%08lX-%08lX VALID\n",
4122                           &DirEntry->NameInformation.FileName,
4123                           pObjectInfo->FileId.Cell,
4124                           pObjectInfo->FileId.Volume,
4125                           pObjectInfo->FileId.Vnode,
4126                           pObjectInfo->FileId.Unique));
4127
4128             try_return( ntStatus);
4129         }
4130
4131         //
4132         // This node requires updating
4133         //
4134
4135         ntStatus = AFSEvaluateTargetByID( pObjectInfo,
4136                                           AuthGroup,
4137                                           FastCall,
4138                                           &pDirEnumEntry);
4139
4140         if( !NT_SUCCESS( ntStatus))
4141         {
4142
4143             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4144                           AFS_TRACE_LEVEL_ERROR,
4145                           "AFSValidateEntry Failed to evaluate entry FastCall %d %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4146                           FastCall,
4147                           &DirEntry->NameInformation.FileName,
4148                           pObjectInfo->FileId.Cell,
4149                           pObjectInfo->FileId.Volume,
4150                           pObjectInfo->FileId.Vnode,
4151                           pObjectInfo->FileId.Unique,
4152                           ntStatus));
4153
4154             //
4155             // Failed validation of node so return access-denied
4156             //
4157
4158             try_return( ntStatus);
4159         }
4160
4161         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4162                       AFS_TRACE_LEVEL_VERBOSE,
4163                       "AFSValidateEntry Validating entry FastCall %d %wZ FID %08lX-%08lX-%08lX-%08lX DV %I64X returned DV %I64X FT %d\n",
4164                       FastCall,
4165                       &DirEntry->NameInformation.FileName,
4166                       pObjectInfo->FileId.Cell,
4167                       pObjectInfo->FileId.Volume,
4168                       pObjectInfo->FileId.Vnode,
4169                       pObjectInfo->FileId.Unique,
4170                       pObjectInfo->DataVersion.QuadPart,
4171                       pDirEnumEntry->DataVersion.QuadPart,
4172                       pDirEnumEntry->FileType));
4173
4174
4175         //
4176         // Based on the file type, process the node
4177         //
4178
4179         switch( pDirEnumEntry->FileType)
4180         {
4181
4182             case AFS_FILE_TYPE_MOUNTPOINT:
4183             {
4184
4185                 //
4186                 // Update the metadata for the entry
4187                 //
4188
4189                 ntStatus = AFSUpdateMetaData( DirEntry,
4190                                               pDirEnumEntry);
4191
4192                 if( NT_SUCCESS( ntStatus))
4193                 {
4194
4195                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4196                                   AFS_TRACE_LEVEL_VERBOSE,
4197                                   "AFSValidateEntry MountPoint FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
4198                                   pObjectInfo->FileId.Cell,
4199                                   pObjectInfo->FileId.Volume,
4200                                   pObjectInfo->FileId.Vnode,
4201                                   pObjectInfo->FileId.Unique));
4202
4203                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
4204                 }
4205
4206                 break;
4207             }
4208
4209             case AFS_FILE_TYPE_SYMLINK:
4210             case AFS_FILE_TYPE_DFSLINK:
4211             {
4212
4213                 //
4214                 // Update the metadata for the entry
4215                 //
4216
4217                 ntStatus = AFSUpdateMetaData( DirEntry,
4218                                               pDirEnumEntry);
4219
4220                 if( NT_SUCCESS( ntStatus))
4221                 {
4222
4223                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4224                                   AFS_TRACE_LEVEL_VERBOSE,
4225                                   "AFSValidateEntry Symlink FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
4226                                   pObjectInfo->FileId.Cell,
4227                                   pObjectInfo->FileId.Volume,
4228                                   pObjectInfo->FileId.Vnode,
4229                                   pObjectInfo->FileId.Unique));
4230
4231                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
4232                 }
4233
4234                 break;
4235             }
4236
4237             case AFS_FILE_TYPE_FILE:
4238             {
4239
4240                 BOOLEAN bPurgeExtents = FALSE;
4241
4242                 //
4243                 // For a file where the data version has become invalid we need to
4244                 // fail any current extent requests and purge the cache for the file
4245                 // Can't hold the Fcb resource while doing this
4246                 //
4247
4248                 if( pObjectInfo->Fcb != NULL &&
4249                     (pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart ||
4250                       BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA)))
4251                 {
4252
4253                     pCurrentFcb = pObjectInfo->Fcb;
4254
4255                     if( !ExIsResourceAcquiredLite( &pCurrentFcb->NPFcb->Resource))
4256                     {
4257
4258                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
4259                                       AFS_TRACE_LEVEL_VERBOSE,
4260                                       "AFSValidateEntry Acquiring Fcb lock %p EXCL %08lX\n",
4261                                       &pCurrentFcb->NPFcb->Resource,
4262                                       PsGetCurrentThread()));
4263
4264                         AFSAcquireExcl( &pCurrentFcb->NPFcb->Resource,
4265                                         TRUE);
4266
4267                         bReleaseFcb = TRUE;
4268                     }
4269
4270                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4271                                   AFS_TRACE_LEVEL_VERBOSE_2,
4272                                   "AFSValidateEntry Flush/purge entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4273                                   &DirEntry->NameInformation.FileName,
4274                                   pObjectInfo->FileId.Cell,
4275                                   pObjectInfo->FileId.Volume,
4276                                   pObjectInfo->FileId.Vnode,
4277                                   pObjectInfo->FileId.Unique));
4278
4279                     if ( pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart)
4280                     {
4281
4282                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4283                                       AFS_TRACE_LEVEL_VERBOSE,
4284                                       "AFSValidateEntry DV Change %wZ FID %08lX-%08lX-%08lX-%08lX (%08lX != %08lX)\n",
4285                                       &DirEntry->NameInformation.FileName,
4286                                       pObjectInfo->FileId.Cell,
4287                                       pObjectInfo->FileId.Volume,
4288                                       pObjectInfo->FileId.Vnode,
4289                                       pObjectInfo->FileId.Unique,
4290                                       pObjectInfo->DataVersion.LowPart,
4291                                       pDirEnumEntry->DataVersion.LowPart));
4292
4293                         bPurgeExtents = TRUE;
4294                     }
4295
4296                     if ( bSafeToPurge)
4297                     {
4298
4299                         if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
4300                         {
4301                             bPurgeExtents = TRUE;
4302
4303                             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4304                                           AFS_TRACE_LEVEL_VERBOSE,
4305                                           "AFSVerifyEntry Clearing VERIFY_DATA flag %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4306                                           &DirEntry->NameInformation.FileName,
4307                                           pObjectInfo->FileId.Cell,
4308                                           pObjectInfo->FileId.Volume,
4309                                           pObjectInfo->FileId.Vnode,
4310                                           pObjectInfo->FileId.Unique));
4311
4312                             ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
4313                         }
4314
4315                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
4316                                       AFS_TRACE_LEVEL_VERBOSE,
4317                                       "AFSValidateEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
4318                                       &pCurrentFcb->NPFcb->SectionObjectResource,
4319                                       PsGetCurrentThread()));
4320
4321                         AFSAcquireExcl( &pCurrentFcb->NPFcb->SectionObjectResource,
4322                                         TRUE);
4323
4324                         __try
4325                         {
4326
4327                             IO_STATUS_BLOCK stIoStatus;
4328
4329                             CcFlushCache( &pCurrentFcb->NPFcb->SectionObjectPointers,
4330                                           NULL,
4331                                           0,
4332                                           &stIoStatus);
4333
4334                             if( !NT_SUCCESS( stIoStatus.Status))
4335                             {
4336
4337                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
4338                                               AFS_TRACE_LEVEL_ERROR,
4339                                               "AFSValidateEntry CcFlushCache failure %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
4340                                               &DirEntry->NameInformation.FileName,
4341                                               pObjectInfo->FileId.Cell,
4342                                               pObjectInfo->FileId.Volume,
4343                                               pObjectInfo->FileId.Vnode,
4344                                               pObjectInfo->FileId.Unique,
4345                                               stIoStatus.Status,
4346                                               stIoStatus.Information));
4347
4348                                 ntStatus = stIoStatus.Status;
4349                             }
4350
4351                             if ( bPurgeExtents &&
4352                                  pCurrentFcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
4353                             {
4354
4355                                 if ( !CcPurgeCacheSection( &pCurrentFcb->NPFcb->SectionObjectPointers,
4356                                                            NULL,
4357                                                            0,
4358                                                            FALSE))
4359                                 {
4360
4361                                     AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
4362                                                   AFS_TRACE_LEVEL_WARNING,
4363                                                   "AFSValidateEntry CcPurgeCacheSection failure %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4364                                                   &DirEntry->NameInformation.FileName,
4365                                                   pObjectInfo->FileId.Cell,
4366                                                   pObjectInfo->FileId.Volume,
4367                                                   pObjectInfo->FileId.Vnode,
4368                                                   pObjectInfo->FileId.Unique));
4369
4370                                     SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
4371                                 }
4372                             }
4373                         }
4374                         __except( EXCEPTION_EXECUTE_HANDLER)
4375                         {
4376                             ntStatus = GetExceptionCode();
4377
4378                             AFSDbgTrace(( 0,
4379                                           0,
4380                                           "EXCEPTION - AFSValidateEntry CcFlushCache or CcPurgeCacheSection %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
4381                                           &DirEntry->NameInformation.FileName,
4382                                           pObjectInfo->FileId.Cell,
4383                                           pObjectInfo->FileId.Volume,
4384                                           pObjectInfo->FileId.Vnode,
4385                                           pObjectInfo->FileId.Unique,
4386                                           ntStatus));
4387
4388                             SetFlag( pCurrentFcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
4389                         }
4390
4391                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
4392                                       AFS_TRACE_LEVEL_VERBOSE,
4393                                       "AFSValidateEntry Releasing Fcb SectionObject lock %p EXCL %08lX\n",
4394                                       &pCurrentFcb->NPFcb->SectionObjectResource,
4395                                       PsGetCurrentThread()));
4396
4397                         AFSReleaseResource( &pCurrentFcb->NPFcb->SectionObjectResource);
4398                     }
4399                     else
4400                     {
4401
4402                         if ( bPurgeExtents)
4403                         {
4404
4405                             SetFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
4406                         }
4407                     }
4408
4409                     if (bReleaseFcb)
4410                     {
4411                         AFSReleaseResource( &pCurrentFcb->NPFcb->Resource);
4412
4413                         bReleaseFcb = FALSE;
4414                     }
4415
4416                     if ( bPurgeExtents &&
4417                          bSafeToPurge)
4418                     {
4419
4420                         if( !BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
4421                         {
4422                             AFSFlushExtents( pCurrentFcb,
4423                                              AuthGroup);
4424                         }
4425                     }
4426                 }
4427
4428                 //
4429                 // Update the metadata for the entry but only if it is safe to do so.
4430                 // If it was determined that a data version change has occurred or
4431                 // that a pending data verification was required, do not update the
4432                 // ObjectInfo meta data or the FileObject size information.  That
4433                 // way it is consistent for the next time that the data is verified
4434                 // or validated.
4435                 //
4436
4437                 if ( !(bPurgeExtents && bSafeToPurge))
4438                 {
4439
4440                     ntStatus = AFSUpdateMetaData( DirEntry,
4441                                                   pDirEnumEntry);
4442
4443                     if( !NT_SUCCESS( ntStatus))
4444                     {
4445
4446                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4447                                       AFS_TRACE_LEVEL_ERROR,
4448                                       "AFSValidateEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
4449                                       &DirEntry->NameInformation.FileName,
4450                                       pObjectInfo->FileId.Cell,
4451                                       pObjectInfo->FileId.Volume,
4452                                       pObjectInfo->FileId.Vnode,
4453                                       pObjectInfo->FileId.Unique,
4454                                       ntStatus));
4455
4456                         break;
4457                     }
4458
4459                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4460                                   AFS_TRACE_LEVEL_VERBOSE,
4461                                   "AFSValidateEntry File FID %08lX-%08lX-%08lX-%08lX No Purge Clearing Verify Flag\n",
4462                                   pObjectInfo->FileId.Cell,
4463                                   pObjectInfo->FileId.Volume,
4464                                   pObjectInfo->FileId.Vnode,
4465                                   pObjectInfo->FileId.Unique));
4466
4467                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
4468
4469                     //
4470                     // Update file sizes
4471                     //
4472
4473                     if( pObjectInfo->Fcb != NULL)
4474                     {
4475                         FILE_OBJECT *pCCFileObject;
4476
4477                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
4478                                       AFS_TRACE_LEVEL_VERBOSE,
4479                                       "AFSValidateEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
4480                                       &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
4481                                       PsGetCurrentThread()));
4482
4483                         AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
4484                                         TRUE);
4485
4486                         __try
4487                         {
4488
4489                             pCCFileObject = CcGetFileObjectFromSectionPtrs( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers);
4490
4491                             pObjectInfo->Fcb->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
4492                             pObjectInfo->Fcb->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
4493                             pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
4494
4495                             if ( pCCFileObject != NULL)
4496                             {
4497                                 CcSetFileSizes( pCCFileObject,
4498                                                 (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
4499                             }
4500                         }
4501                         __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()))
4502                         {
4503
4504                             ntStatus = GetExceptionCode();
4505
4506                             AFSDbgTrace(( 0,
4507                                           0,
4508                                           "EXCEPTION - AFSValidateEntry CcSetFileSizes failed FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
4509                                           pObjectInfo->FileId.Cell,
4510                                           pObjectInfo->FileId.Volume,
4511                                           pObjectInfo->FileId.Vnode,
4512                                           pObjectInfo->FileId.Unique,
4513                                           ntStatus));
4514                         }
4515
4516                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
4517                                       AFS_TRACE_LEVEL_VERBOSE,
4518                                       "AFSValidateEntry Releasing Fcb SectionObject lock %p EXCL %08lX\n",
4519                                       &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
4520                                       PsGetCurrentThread()));
4521
4522                         AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->SectionObjectResource);
4523                     }
4524                 }
4525                 break;
4526             }
4527
4528             case AFS_FILE_TYPE_DIRECTORY:
4529             {
4530
4531                 if( pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart)
4532                 {
4533
4534                     //
4535                     // For a directory or root entry flush the content of
4536                     // the directory enumeration.
4537                     //
4538
4539                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
4540                                   AFS_TRACE_LEVEL_VERBOSE,
4541                                   "AFSValidateEntry Acquiring DirectoryNodeHdr.TreeLock lock %p EXCL %08lX\n",
4542                                   pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
4543                                   PsGetCurrentThread()));
4544
4545                     if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
4546                     {
4547
4548                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4549                                       AFS_TRACE_LEVEL_VERBOSE_2,
4550                                       "AFSValidateEntry Validating directory content for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4551                                       &DirEntry->NameInformation.FileName,
4552                                       pObjectInfo->FileId.Cell,
4553                                       pObjectInfo->FileId.Volume,
4554                                       pObjectInfo->FileId.Vnode,
4555                                       pObjectInfo->FileId.Unique));
4556
4557                         AFSAcquireExcl( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
4558                                         TRUE);
4559
4560                         ntStatus = AFSValidateDirectoryCache( pObjectInfo,
4561                                                               AuthGroup);
4562
4563                         AFSReleaseResource( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
4564                     }
4565
4566                     if( !NT_SUCCESS( ntStatus))
4567                     {
4568
4569                         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4570                                       AFS_TRACE_LEVEL_ERROR,
4571                                       "AFSValidateEntry Failed to re-enumerate %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4572                                       &DirEntry->NameInformation.FileName,
4573                                       pObjectInfo->FileId.Cell,
4574                                       pObjectInfo->FileId.Volume,
4575                                       pObjectInfo->FileId.Vnode,
4576                                       pObjectInfo->FileId.Unique,
4577                                       ntStatus));
4578
4579                         break;
4580                     }
4581                 }
4582
4583                 //
4584                 // Update the metadata for the entry
4585                 //
4586
4587                 ntStatus = AFSUpdateMetaData( DirEntry,
4588                                               pDirEnumEntry);
4589
4590                 if( NT_SUCCESS( ntStatus))
4591                 {
4592
4593                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4594                                   AFS_TRACE_LEVEL_VERBOSE,
4595                                   "AFSValidateEntry Directory FID %08lX-%08lX-%08lX-%08lX Clearing Verify Flag\n",
4596                                   pObjectInfo->FileId.Cell,
4597                                   pObjectInfo->FileId.Volume,
4598                                   pObjectInfo->FileId.Vnode,
4599                                   pObjectInfo->FileId.Unique));
4600
4601                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
4602                 }
4603
4604                 break;
4605             }
4606
4607             default:
4608
4609                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4610                               AFS_TRACE_LEVEL_WARNING,
4611                               "AFSValidateEntry Attempt to verify node of type %d FastCall %d %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4612                               pObjectInfo->FileType,
4613                               FastCall,
4614                               &DirEntry->NameInformation.FileName,
4615                               pObjectInfo->FileId.Cell,
4616                               pObjectInfo->FileId.Volume,
4617                               pObjectInfo->FileId.Vnode,
4618                               pObjectInfo->FileId.Unique));
4619
4620                 break;
4621         }
4622
4623  try_exit:
4624
4625         if( bReleaseFcb)
4626         {
4627
4628             AFSReleaseResource( &pCurrentFcb->NPFcb->Resource);
4629         }
4630
4631         if( pDirEnumEntry != NULL)
4632         {
4633
4634             AFSExFreePoolWithTag( pDirEnumEntry, AFS_GENERIC_MEMORY_2_TAG);
4635         }
4636     }
4637
4638     return ntStatus;
4639 }
4640
4641 NTSTATUS
4642 AFSInitializeSpecialShareNameList()
4643 {
4644
4645     NTSTATUS ntStatus = STATUS_SUCCESS;
4646     AFSDirectoryCB *pDirNode = NULL, *pLastDirNode = NULL;
4647     AFSObjectInfoCB *pObjectInfoCB = NULL;
4648     UNICODE_STRING uniShareName;
4649     ULONG ulEntryLength = 0;
4650     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
4651     LONG lCount;
4652
4653     __Enter
4654     {
4655
4656         RtlInitUnicodeString( &uniShareName,
4657                               L"PIPE");
4658
4659         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
4660                                                0);
4661
4662         if( pObjectInfoCB == NULL)
4663         {
4664
4665             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4666         }
4667
4668         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
4669                                          AFS_OBJECT_REFERENCE_GLOBAL);
4670
4671         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4672                       AFS_TRACE_LEVEL_VERBOSE,
4673                       "AFSInitializeSpecialShareNameList (srvsvc) Increment count on object %p Cnt %d\n",
4674                       pObjectInfoCB,
4675                       lCount));
4676
4677         pObjectInfoCB->FileType = (ULONG) AFS_FILE_TYPE_SPECIAL_SHARE_NAME;
4678
4679         ulEntryLength = sizeof( AFSDirectoryCB) +
4680                                      uniShareName.Length;
4681
4682         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
4683                                                                   ulEntryLength,
4684                                                                   AFS_DIR_ENTRY_TAG);
4685
4686         if( pDirNode == NULL)
4687         {
4688
4689             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
4690                                              AFS_OBJECT_REFERENCE_GLOBAL);
4691
4692             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4693                           AFS_TRACE_LEVEL_VERBOSE,
4694                           "AFSInitializeSpecialShareNameList Decrement count on object %p Cnt %d\n",
4695                           pObjectInfoCB,
4696                           lCount));
4697
4698             if ( lCount == 0)
4699             {
4700
4701                 AFSDeleteObjectInfo( &pObjectInfoCB);
4702             }
4703
4704             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4705         }
4706
4707         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
4708                       AFS_TRACE_LEVEL_VERBOSE,
4709                       "AFSInitializeSpecialShareNameList (srvsvc) AFS_DIR_ENTRY_TAG allocated %p\n",
4710                       pDirNode));
4711
4712         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
4713                                                                                    sizeof( AFSNonPagedDirectoryCB),
4714                                                                                    AFS_DIR_ENTRY_NP_TAG);
4715
4716         if( pNonPagedDirEntry == NULL)
4717         {
4718
4719             AFSLibExFreePoolWithTag( pDirNode,
4720                                      AFS_DIR_ENTRY_TAG);
4721
4722             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
4723                                              AFS_OBJECT_REFERENCE_GLOBAL);
4724
4725             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4726                           AFS_TRACE_LEVEL_VERBOSE,
4727                           "AFSInitializeSpecialShareNameList Decrement count on object %p Cnt %d\n",
4728                           pObjectInfoCB,
4729                           lCount));
4730
4731             if ( lCount == 0)
4732             {
4733
4734                 AFSDeleteObjectInfo( &pObjectInfoCB);
4735             }
4736
4737             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4738         }
4739
4740         RtlZeroMemory( pDirNode,
4741                        ulEntryLength);
4742
4743         RtlZeroMemory( pNonPagedDirEntry,
4744                        sizeof( AFSNonPagedDirectoryCB));
4745
4746         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
4747
4748         pDirNode->NonPaged = pNonPagedDirEntry;
4749
4750         pDirNode->ObjectInformation = pObjectInfoCB;
4751
4752         //
4753         // Set valid entry
4754         //
4755
4756         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_PIPE_SERVICE);
4757
4758         pDirNode->NameInformation.FileName.Length = uniShareName.Length;
4759
4760         pDirNode->NameInformation.FileName.MaximumLength = uniShareName.Length;
4761
4762         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
4763
4764         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
4765                        uniShareName.Buffer,
4766                        pDirNode->NameInformation.FileName.Length);
4767
4768         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
4769                                                                        TRUE);
4770
4771         AFSSpecialShareNames = pDirNode;
4772
4773         pLastDirNode = pDirNode;
4774
4775
4776         RtlInitUnicodeString( &uniShareName,
4777                               L"IPC$");
4778
4779         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
4780                                                0);
4781
4782         if( pObjectInfoCB == NULL)
4783         {
4784
4785             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4786         }
4787
4788         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
4789                                          AFS_OBJECT_REFERENCE_GLOBAL);
4790
4791         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4792                       AFS_TRACE_LEVEL_VERBOSE,
4793                       "AFSInitializeSpecialShareNameList (ipc$) Incrementing count on object %p Cnt %d\n",
4794                       pObjectInfoCB,
4795                       lCount));
4796
4797         pObjectInfoCB->FileType = (ULONG) AFS_FILE_TYPE_SPECIAL_SHARE_NAME;
4798
4799         ulEntryLength = sizeof( AFSDirectoryCB) +
4800                                      uniShareName.Length;
4801
4802         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
4803                                                                   ulEntryLength,
4804                                                                   AFS_DIR_ENTRY_TAG);
4805
4806         if( pDirNode == NULL)
4807         {
4808
4809             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
4810                                              AFS_OBJECT_REFERENCE_GLOBAL);
4811
4812             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4813                           AFS_TRACE_LEVEL_VERBOSE,
4814                           "AFSInitializeSpecialShareNameList Decrement count on object %p Cnt %d\n",
4815                           pObjectInfoCB,
4816                           lCount));
4817
4818             if ( lCount == 0)
4819             {
4820
4821                 AFSDeleteObjectInfo( &pObjectInfoCB);
4822             }
4823
4824             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4825         }
4826
4827         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
4828                       AFS_TRACE_LEVEL_VERBOSE,
4829                       "AFSInitializeSpecialShareNameList (ipc$) AFS_DIR_ENTRY_TAG allocated %p\n",
4830                       pDirNode));
4831
4832         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
4833                                                                                    sizeof( AFSNonPagedDirectoryCB),
4834                                                                                    AFS_DIR_ENTRY_NP_TAG);
4835
4836         if( pNonPagedDirEntry == NULL)
4837         {
4838
4839             AFSLibExFreePoolWithTag( pDirNode,
4840                                      AFS_DIR_ENTRY_TAG);
4841
4842             lCount = AFSObjectInfoDecrement( pObjectInfoCB,
4843                                              AFS_OBJECT_REFERENCE_GLOBAL);
4844
4845             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4846                           AFS_TRACE_LEVEL_VERBOSE,
4847                           "AFSInitializeSpecialShareNameList Decrement count on object %p Cnt %d\n",
4848                           pObjectInfoCB,
4849                           lCount));
4850
4851             if ( lCount == 0)
4852             {
4853
4854                 AFSDeleteObjectInfo( &pObjectInfoCB);
4855             }
4856
4857             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4858         }
4859
4860         RtlZeroMemory( pDirNode,
4861                        ulEntryLength);
4862
4863         RtlZeroMemory( pNonPagedDirEntry,
4864                        sizeof( AFSNonPagedDirectoryCB));
4865
4866         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
4867
4868         pDirNode->NonPaged = pNonPagedDirEntry;
4869
4870         pDirNode->ObjectInformation = pObjectInfoCB;
4871
4872         //
4873         // Set valid entry
4874         //
4875
4876         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_IPC);
4877
4878         pDirNode->NameInformation.FileName.Length = uniShareName.Length;
4879
4880         pDirNode->NameInformation.FileName.MaximumLength = uniShareName.Length;
4881
4882         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
4883
4884         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
4885                        uniShareName.Buffer,
4886                        pDirNode->NameInformation.FileName.Length);
4887
4888         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
4889                                                                        TRUE);
4890
4891         pLastDirNode->ListEntry.fLink = pDirNode;
4892
4893         pDirNode->ListEntry.bLink = pLastDirNode;
4894
4895 try_exit:
4896
4897         if( !NT_SUCCESS( ntStatus))
4898         {
4899
4900             if( AFSSpecialShareNames != NULL)
4901             {
4902
4903                 pDirNode = AFSSpecialShareNames;
4904
4905                 while( pDirNode != NULL)
4906                 {
4907
4908                     pLastDirNode = (AFSDirectoryCB *)pDirNode->ListEntry.fLink;
4909
4910                     lCount = AFSObjectInfoDecrement( pDirNode->ObjectInformation,
4911                                                      AFS_OBJECT_REFERENCE_GLOBAL);
4912
4913                     AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4914                                   AFS_TRACE_LEVEL_VERBOSE,
4915                                   "AFSInitializeSpecialShareNameList Decrement count on object %p Cnt %d\n",
4916                                   pDirNode->ObjectInformation,
4917                                   lCount));
4918
4919                     if ( lCount == 0)
4920                     {
4921
4922                         AFSDeleteObjectInfo( &pDirNode->ObjectInformation);
4923                     }
4924
4925                     ExDeleteResourceLite( &pDirNode->NonPaged->Lock);
4926
4927                     AFSLibExFreePoolWithTag( pDirNode->NonPaged,
4928                                              AFS_DIR_ENTRY_NP_TAG);
4929
4930                     AFSLibExFreePoolWithTag( pDirNode,
4931                                              AFS_DIR_ENTRY_TAG);
4932
4933                     pDirNode = pLastDirNode;
4934                 }
4935
4936                 AFSSpecialShareNames = NULL;
4937             }
4938         }
4939     }
4940
4941     return ntStatus;
4942 }
4943
4944 AFSDirectoryCB *
4945 AFSGetSpecialShareNameEntry( IN UNICODE_STRING *ShareName,
4946                              IN UNICODE_STRING *SecondaryName)
4947 {
4948
4949     AFSDirectoryCB *pDirectoryCB = NULL;
4950     ULONGLONG ullHash = 0;
4951     UNICODE_STRING uniFullShareName;
4952
4953     __Enter
4954     {
4955
4956
4957         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
4958                       AFS_TRACE_LEVEL_VERBOSE_2,
4959                       "AFSGetSpecialShareNameEntry share name %wZ secondary name %wZ\n",
4960                       ShareName,
4961                       SecondaryName));
4962
4963         uniFullShareName = *ShareName;
4964
4965         //
4966         // Generate our hash value
4967         //
4968
4969         ullHash = AFSGenerateCRC( &uniFullShareName,
4970                                   TRUE);
4971
4972         //
4973         // Loop through our special share names to see if this is one of them
4974         //
4975
4976         pDirectoryCB = AFSSpecialShareNames;
4977
4978         while( pDirectoryCB != NULL)
4979         {
4980
4981             if( ullHash == pDirectoryCB->CaseInsensitiveTreeEntry.HashIndex)
4982             {
4983
4984                 break;
4985             }
4986
4987             pDirectoryCB = (AFSDirectoryCB *)pDirectoryCB->ListEntry.fLink;
4988         }
4989     }
4990
4991     return pDirectoryCB;
4992 }
4993
4994 void
4995 AFSWaitOnQueuedFlushes( IN AFSFcb *Fcb)
4996 {
4997
4998     //
4999     // Block on the queue flush event
5000     //
5001
5002     KeWaitForSingleObject( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
5003                            Executive,
5004                            KernelMode,
5005                            FALSE,
5006                            NULL);
5007
5008     return;
5009 }
5010
5011 void
5012 AFSWaitOnQueuedReleases()
5013 {
5014
5015     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
5016
5017     //
5018     // Block on the queue flush event
5019     //
5020
5021     KeWaitForSingleObject( &pRDRDeviceExt->Specific.RDR.QueuedReleaseExtentEvent,
5022                            Executive,
5023                            KernelMode,
5024                            FALSE,
5025                            NULL);
5026
5027     return;
5028 }
5029
5030 BOOLEAN
5031 AFSIsEqualFID( IN AFSFileID *FileId1,
5032                IN AFSFileID *FileId2)
5033 {
5034
5035     BOOLEAN bIsEqual = FALSE;
5036
5037     if( FileId1->Hash == FileId2->Hash &&
5038         FileId1->Unique == FileId2->Unique &&
5039         FileId1->Vnode == FileId2->Vnode &&
5040         FileId1->Volume == FileId2->Volume &&
5041         FileId1->Cell == FileId2->Cell)
5042     {
5043
5044         bIsEqual = TRUE;
5045     }
5046
5047     return bIsEqual;
5048 }
5049
5050 NTSTATUS
5051 AFSResetDirectoryContent( IN AFSObjectInfoCB *ObjectInfoCB)
5052 {
5053
5054     NTSTATUS ntStatus = STATUS_SUCCESS;
5055     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
5056
5057     __Enter
5058     {
5059
5060         ASSERT( ExIsResourceAcquiredExclusiveLite( ObjectInfoCB->Specific.Directory.DirectoryNodeHdr.TreeLock));
5061
5062         //
5063         // Reset the directory list information
5064         //
5065
5066         pCurrentDirEntry = ObjectInfoCB->Specific.Directory.DirectoryNodeListHead;
5067
5068         while( pCurrentDirEntry != NULL)
5069         {
5070
5071             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
5072
5073             if( pCurrentDirEntry->DirOpenReferenceCount <= 0 &&
5074                 pCurrentDirEntry->NameArrayReferenceCount <= 0)
5075             {
5076
5077                 AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
5078                               AFS_TRACE_LEVEL_VERBOSE,
5079                               "AFSResetDirectoryContent Deleting dir entry %p for %wZ\n",
5080                               pCurrentDirEntry,
5081                               &pCurrentDirEntry->NameInformation.FileName));
5082
5083                 AFSDeleteDirEntry( ObjectInfoCB,
5084                                    &pCurrentDirEntry);
5085             }
5086             else
5087             {
5088
5089                 AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
5090                               AFS_TRACE_LEVEL_VERBOSE,
5091                               "AFSResetDirectoryContent Setting DELETE flag in dir entry %p for %wZ\n",
5092                               pCurrentDirEntry,
5093                               &pCurrentDirEntry->NameInformation.FileName));
5094
5095                 SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
5096
5097                 AFSRemoveNameEntry( ObjectInfoCB,
5098                                     pCurrentDirEntry);
5099             }
5100
5101             pCurrentDirEntry = pNextDirEntry;
5102         }
5103
5104         ObjectInfoCB->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
5105
5106         ObjectInfoCB->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
5107
5108         ObjectInfoCB->Specific.Directory.ShortNameTree = NULL;
5109
5110         ObjectInfoCB->Specific.Directory.DirectoryNodeListHead = NULL;
5111
5112         ObjectInfoCB->Specific.Directory.DirectoryNodeListTail = NULL;
5113
5114         ObjectInfoCB->Specific.Directory.DirectoryNodeCount = 0;
5115
5116         AFSDbgTrace(( AFS_SUBSYSTEM_DIR_NODE_COUNT,
5117                       AFS_TRACE_LEVEL_VERBOSE,
5118                       "AFSResetDirectoryContent Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
5119                       ObjectInfoCB->FileId.Cell,
5120                       ObjectInfoCB->FileId.Volume,
5121                       ObjectInfoCB->FileId.Vnode,
5122                       ObjectInfoCB->FileId.Unique));
5123     }
5124
5125     return ntStatus;
5126 }
5127
5128 NTSTATUS
5129 AFSEnumerateGlobalRoot( IN GUID *AuthGroup)
5130 {
5131
5132     NTSTATUS ntStatus = STATUS_SUCCESS;
5133     AFSDirectoryCB *pDirGlobalDirNode = NULL;
5134     UNICODE_STRING uniFullName;
5135
5136     __Enter
5137     {
5138
5139         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
5140                       AFS_TRACE_LEVEL_VERBOSE,
5141                       "AFSEnumerateGlobalRoot Acquiring GlobalRoot DirectoryNodeHdr.TreeLock lock %p EXCL %08lX\n",
5142                       AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
5143                       PsGetCurrentThread()));
5144
5145         AFSAcquireExcl( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
5146                         TRUE);
5147
5148         if( BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
5149         {
5150
5151             try_return( ntStatus);
5152         }
5153
5154         //
5155         // Initialize the root information
5156         //
5157
5158         AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.ContentIndex = 1;
5159
5160         //
5161         // Enumerate the shares in the volume
5162         //
5163
5164         ntStatus = AFSEnumerateDirectory( AuthGroup,
5165                                           &AFSGlobalRoot->ObjectInformation,
5166                                           TRUE);
5167
5168         if( !NT_SUCCESS( ntStatus))
5169         {
5170
5171             try_return( ntStatus);
5172         }
5173
5174         pDirGlobalDirNode = AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListHead;
5175
5176         uniFullName.MaximumLength = PAGE_SIZE;
5177         uniFullName.Length = 0;
5178
5179         uniFullName.Buffer = (WCHAR *)AFSLibExAllocatePoolWithTag( PagedPool,
5180                                                                    uniFullName.MaximumLength,
5181                                                                    AFS_GENERIC_MEMORY_12_TAG);
5182
5183         if( uniFullName.Buffer == NULL)
5184         {
5185
5186             //
5187             // Reset the directory content
5188             //
5189
5190             AFSResetDirectoryContent( &AFSGlobalRoot->ObjectInformation);
5191
5192             ClearFlag( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
5193
5194             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5195         }
5196
5197         //
5198         // Populate our list of entries in the NP enumeration list
5199         //
5200
5201         while( pDirGlobalDirNode != NULL)
5202         {
5203
5204             uniFullName.Buffer[ 0] = L'\\';
5205             uniFullName.Buffer[ 1] = L'\\';
5206
5207             uniFullName.Length = 2 * sizeof( WCHAR);
5208
5209             RtlCopyMemory( &uniFullName.Buffer[ 2],
5210                            AFSServerName.Buffer,
5211                            AFSServerName.Length);
5212
5213             uniFullName.Length += AFSServerName.Length;
5214
5215             uniFullName.Buffer[ uniFullName.Length/sizeof( WCHAR)] = L'\\';
5216
5217             uniFullName.Length += sizeof( WCHAR);
5218
5219             RtlCopyMemory( &uniFullName.Buffer[ uniFullName.Length/sizeof( WCHAR)],
5220                            pDirGlobalDirNode->NameInformation.FileName.Buffer,
5221                            pDirGlobalDirNode->NameInformation.FileName.Length);
5222
5223             uniFullName.Length += pDirGlobalDirNode->NameInformation.FileName.Length;
5224
5225             AFSAddConnectionEx( &uniFullName,
5226                                 RESOURCEDISPLAYTYPE_SHARE,
5227                                 0);
5228
5229             pDirGlobalDirNode = (AFSDirectoryCB *)pDirGlobalDirNode->ListEntry.fLink;
5230         }
5231
5232         AFSLibExFreePoolWithTag( uniFullName.Buffer,
5233                                  AFS_GENERIC_MEMORY_12_TAG);
5234
5235 try_exit:
5236
5237         AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
5238     }
5239
5240     return ntStatus;
5241 }
5242
5243 BOOLEAN
5244 AFSIsRelativeName( IN UNICODE_STRING *Name)
5245 {
5246
5247     BOOLEAN bIsRelative = FALSE;
5248
5249     if( Name->Length > 0 &&
5250         Name->Buffer[ 0] != L'\\')
5251     {
5252
5253         bIsRelative = TRUE;
5254     }
5255
5256     return bIsRelative;
5257 }
5258
5259 BOOLEAN
5260 AFSIsAbsoluteAFSName( IN UNICODE_STRING *Name)
5261 {
5262     UNICODE_STRING uniTempName;
5263     BOOLEAN        bIsAbsolute = FALSE;
5264
5265     //
5266     // An absolute AFS path must begin with \afs\... or equivalent
5267     //
5268
5269     if ( Name->Length == 0 ||
5270          Name->Length <= AFSMountRootName.Length + sizeof( WCHAR) ||
5271          Name->Buffer[ 0] != L'\\' ||
5272          Name->Buffer[ AFSMountRootName.Length/sizeof( WCHAR)] != L'\\')
5273     {
5274
5275         return FALSE;
5276     }
5277
5278     uniTempName.Length = AFSMountRootName.Length;
5279     uniTempName.MaximumLength = AFSMountRootName.Length;
5280
5281     uniTempName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
5282                                                             uniTempName.MaximumLength,
5283                                                             AFS_NAME_BUFFER_TWO_TAG);
5284
5285     if( uniTempName.Buffer == NULL)
5286     {
5287
5288         return FALSE;
5289     }
5290
5291     RtlCopyMemory( uniTempName.Buffer,
5292                    Name->Buffer,
5293                    AFSMountRootName.Length);
5294
5295     bIsAbsolute = (0 == RtlCompareUnicodeString( &uniTempName,
5296                                                  &AFSMountRootName,
5297                                                  TRUE));
5298
5299     AFSExFreePoolWithTag( uniTempName.Buffer,
5300                           AFS_NAME_BUFFER_TWO_TAG);
5301
5302     return bIsAbsolute;
5303 }
5304
5305
5306 void
5307 AFSUpdateName( IN UNICODE_STRING *Name)
5308 {
5309
5310     USHORT usIndex = 0;
5311
5312     while( usIndex < Name->Length/sizeof( WCHAR))
5313     {
5314
5315         if( Name->Buffer[ usIndex] == L'/')
5316         {
5317
5318             Name->Buffer[ usIndex] = L'\\';
5319         }
5320
5321         usIndex++;
5322     }
5323
5324     return;
5325 }
5326
5327 NTSTATUS
5328 AFSUpdateTargetName( IN OUT UNICODE_STRING *TargetName,
5329                      IN OUT ULONG *Flags,
5330                      IN WCHAR *NameBuffer,
5331                      IN USHORT NameLength)
5332 {
5333
5334     NTSTATUS ntStatus = STATUS_SUCCESS;
5335     WCHAR *pTmpBuffer = NULL;
5336
5337     __Enter
5338     {
5339
5340         //
5341         // If we have enough space then just move in the name otherwise
5342         // allocate a new buffer
5343         //
5344
5345         if( TargetName->Length < NameLength)
5346         {
5347
5348             pTmpBuffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
5349                                                             NameLength,
5350                                                             AFS_NAME_BUFFER_FIVE_TAG);
5351
5352             if( pTmpBuffer == NULL)
5353             {
5354
5355                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5356             }
5357
5358             if( BooleanFlagOn( *Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER))
5359             {
5360
5361                 AFSExFreePoolWithTag( TargetName->Buffer, AFS_NAME_BUFFER_FIVE_TAG);
5362             }
5363
5364             TargetName->MaximumLength = NameLength;
5365
5366             TargetName->Buffer = pTmpBuffer;
5367
5368             SetFlag( *Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER);
5369         }
5370
5371         TargetName->Length = NameLength;
5372
5373         RtlCopyMemory( TargetName->Buffer,
5374                        NameBuffer,
5375                        TargetName->Length);
5376
5377         //
5378         // Update the name in the buffer
5379         //
5380
5381         AFSUpdateName( TargetName);
5382
5383 try_exit:
5384
5385         NOTHING;
5386     }
5387
5388     return ntStatus;
5389 }
5390
5391 void
5392 AFSSetEnumerationEvent( IN AFSFcb *Fcb)
5393 {
5394     LONG lCount;
5395
5396     //
5397     // Depending on the type of node, set the event
5398     //
5399
5400     switch( Fcb->Header.NodeTypeCode)
5401     {
5402
5403         case AFS_DIRECTORY_FCB:
5404         case AFS_ROOT_FCB:
5405         case AFS_ROOT_ALL:
5406         {
5407
5408             lCount = InterlockedIncrement( &Fcb->NPFcb->Specific.Directory.DirectoryEnumCount);
5409
5410             break;
5411         }
5412     }
5413
5414     return;
5415 }
5416
5417 void
5418 AFSClearEnumerationEvent( IN AFSFcb *Fcb)
5419 {
5420
5421     LONG lCount;
5422
5423     //
5424     // Depending on the type of node, set the event
5425     //
5426
5427     switch( Fcb->Header.NodeTypeCode)
5428     {
5429
5430         case AFS_DIRECTORY_FCB:
5431         case AFS_ROOT_FCB:
5432         case AFS_ROOT_ALL:
5433         {
5434
5435             ASSERT( Fcb->NPFcb->Specific.Directory.DirectoryEnumCount > 0);
5436
5437             lCount = InterlockedDecrement( &Fcb->NPFcb->Specific.Directory.DirectoryEnumCount);
5438
5439             break;
5440         }
5441     }
5442
5443     return;
5444 }
5445
5446 BOOLEAN
5447 AFSIsEnumerationInProcess( IN AFSObjectInfoCB *ObjectInfo)
5448 {
5449
5450     BOOLEAN bIsInProcess = FALSE;
5451
5452     __Enter
5453     {
5454
5455         if( ObjectInfo->Fcb == NULL)
5456         {
5457
5458             try_return( bIsInProcess);
5459         }
5460
5461         switch( ObjectInfo->Fcb->Header.NodeTypeCode)
5462         {
5463
5464             case AFS_DIRECTORY_FCB:
5465             case AFS_ROOT_FCB:
5466             case AFS_ROOT_ALL:
5467             {
5468
5469                 if( ObjectInfo->Fcb->NPFcb->Specific.Directory.DirectoryEnumCount > 0)
5470                 {
5471
5472                     bIsInProcess = TRUE;
5473                 }
5474
5475                 break;
5476             }
5477         }
5478
5479 try_exit:
5480
5481         NOTHING;
5482     }
5483
5484     return bIsInProcess;
5485 }
5486
5487 NTSTATUS
5488 AFSVerifyVolume( IN ULONGLONG ProcessId,
5489                  IN AFSVolumeCB *VolumeCB)
5490 {
5491
5492     UNREFERENCED_PARAMETER(ProcessId);
5493     UNREFERENCED_PARAMETER(VolumeCB);
5494     NTSTATUS ntStatus = STATUS_SUCCESS;
5495
5496
5497     return ntStatus;
5498 }
5499
5500 NTSTATUS
5501 AFSInitPIOCtlDirectoryCB( IN AFSObjectInfoCB *ParentObjectInfo)
5502 {
5503
5504     NTSTATUS ntStatus = STATUS_SUCCESS;
5505     AFSObjectInfoCB *pObjectInfoCB = NULL;
5506     AFSDirectoryCB *pDirNode = NULL;
5507     ULONG ulEntryLength = 0;
5508     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
5509     LONG lCount;
5510
5511     __Enter
5512     {
5513
5514         AFSAcquireExcl( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
5515                         TRUE);
5516
5517         pObjectInfoCB = AFSAllocateObjectInfo( ParentObjectInfo,
5518                                                0);
5519
5520         if( pObjectInfoCB == NULL)
5521         {
5522
5523             AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
5524
5525             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5526         }
5527
5528         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
5529                                          AFS_OBJECT_REFERENCE_PIOCTL);
5530
5531         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
5532                       AFS_TRACE_LEVEL_VERBOSE,
5533                       "AFSInitPIOCtlDirectoryCB Increment count on object %p Cnt %d\n",
5534                       pObjectInfoCB,
5535                       lCount));
5536
5537         AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
5538
5539         pObjectInfoCB->FileType = (ULONG) AFS_FILE_TYPE_PIOCTL;
5540
5541         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM;
5542
5543         ulEntryLength = sizeof( AFSDirectoryCB) + AFSPIOCtlName.Length;
5544
5545         pDirNode = (AFSDirectoryCB *)AFSExAllocatePoolWithTag( PagedPool,
5546                                                                ulEntryLength,
5547                                                                AFS_DIR_ENTRY_TAG);
5548
5549         if( pDirNode == NULL)
5550         {
5551
5552             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5553         }
5554
5555         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
5556                       AFS_TRACE_LEVEL_VERBOSE,
5557                       "AFSInitPIOCtlDirectoryCB AFS_DIR_ENTRY_TAG allocated %p\n",
5558                       pDirNode));
5559
5560         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSExAllocatePoolWithTag( NonPagedPool,
5561                                                                                 sizeof( AFSNonPagedDirectoryCB),
5562                                                                                 AFS_DIR_ENTRY_NP_TAG);
5563
5564         if( pNonPagedDirEntry == NULL)
5565         {
5566
5567             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5568         }
5569
5570         RtlZeroMemory( pDirNode,
5571                        ulEntryLength);
5572
5573         RtlZeroMemory( pNonPagedDirEntry,
5574                        sizeof( AFSNonPagedDirectoryCB));
5575
5576         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
5577
5578         pDirNode->NonPaged = pNonPagedDirEntry;
5579
5580         pDirNode->ObjectInformation = pObjectInfoCB;
5581
5582         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_PIOCTL_INDEX;
5583
5584         //
5585         // Set valid entry
5586         //
5587
5588         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_FAKE);
5589
5590         pDirNode->NameInformation.FileName.Length = AFSPIOCtlName.Length;
5591
5592         pDirNode->NameInformation.FileName.MaximumLength = AFSPIOCtlName.Length;
5593
5594         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
5595
5596         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
5597                        AFSPIOCtlName.Buffer,
5598                        pDirNode->NameInformation.FileName.Length);
5599
5600         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
5601                                                                        TRUE);
5602
5603         if ( InterlockedCompareExchangePointer( (PVOID *)&ParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB, pDirNode, NULL) != NULL)
5604         {
5605
5606             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
5607                           AFS_TRACE_LEVEL_WARNING,
5608                           "AFSInitPIOCtlDirectoryCB Raced PIOCtlDirectoryCB %p pFcb %p\n",
5609                           ParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB,
5610                           pDirNode));
5611
5612             try_return( ntStatus = STATUS_REPARSE);
5613         }
5614
5615 try_exit:
5616
5617         if ( ntStatus != STATUS_SUCCESS)
5618         {
5619
5620             if ( pDirNode != NULL)
5621             {
5622
5623                 AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
5624                               AFS_TRACE_LEVEL_VERBOSE,
5625                               "AFSInitPIOCtlDirectoryCB AFS_DIR_ENTRY_TAG deallocating %p\n",
5626                               pDirNode));
5627
5628                 AFSExFreePoolWithTag( pDirNode, AFS_DIR_ENTRY_TAG);
5629             }
5630
5631             if( pNonPagedDirEntry != NULL)
5632             {
5633
5634                 ExDeleteResourceLite( &pNonPagedDirEntry->Lock);
5635
5636                 AFSExFreePoolWithTag( pNonPagedDirEntry, AFS_DIR_ENTRY_NP_TAG);
5637             }
5638
5639             if ( pObjectInfoCB != NULL)
5640             {
5641
5642                 lCount = AFSObjectInfoDecrement( pObjectInfoCB,
5643                                                  AFS_OBJECT_REFERENCE_PIOCTL);
5644
5645                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
5646                               AFS_TRACE_LEVEL_VERBOSE,
5647                               "AFSInitPIOCtlDirectoryCB Decrement count on object %p Cnt %d\n",
5648                               pObjectInfoCB,
5649                               lCount));
5650
5651                 if ( lCount == 0)
5652                 {
5653
5654                     AFSDeleteObjectInfo( &pObjectInfoCB);
5655                 }
5656             }
5657         }
5658     }
5659
5660     return ntStatus;
5661 }
5662
5663 NTSTATUS
5664 AFSRetrieveFileAttributes( IN AFSDirectoryCB *ParentDirectoryCB,
5665                            IN AFSDirectoryCB *DirectoryCB,
5666                            IN UNICODE_STRING *ParentPathName,
5667                            IN AFSNameArrayHdr *RelatedNameArray,
5668                            IN GUID           *AuthGroup,
5669                            OUT AFSFileInfoCB *FileInfo)
5670 {
5671
5672     NTSTATUS ntStatus = STATUS_SUCCESS;
5673     AFSDirEnumEntry *pDirEntry = NULL;
5674     UNICODE_STRING uniFullPathName = {0};
5675     AFSNameArrayHdr    *pNameArray = NULL;
5676     AFSVolumeCB *pVolumeCB = NULL;
5677     LONG VolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
5678     AFSVolumeCB *pNewVolumeCB = NULL;
5679     LONG NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
5680     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
5681     AFSDirectoryCB *pNewParentDirEntry = NULL;
5682     WCHAR *pwchBuffer = NULL;
5683     UNICODE_STRING uniComponentName, uniRemainingPath, uniParsedName;
5684     ULONG ulNameDifference = 0;
5685     LONG lCount;
5686     UNICODE_STRING uniDFSTargetName;
5687
5688     __Enter
5689     {
5690
5691         uniDFSTargetName.Length = 0;
5692         uniDFSTargetName.MaximumLength = 0;
5693         uniDFSTargetName.Buffer = NULL;
5694
5695         //
5696         // Retrieve a target name for the entry
5697         //
5698
5699         AFSAcquireShared( &DirectoryCB->NonPaged->Lock,
5700                           TRUE);
5701
5702         if( DirectoryCB->NameInformation.TargetName.Length == 0)
5703         {
5704
5705             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5706
5707             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
5708                                               AuthGroup,
5709                                               FALSE,
5710                                               &pDirEntry);
5711
5712             if( !NT_SUCCESS( ntStatus) ||
5713                 pDirEntry->TargetNameLength == 0)
5714             {
5715
5716                 if( pDirEntry != NULL)
5717                 {
5718
5719                     ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
5720                 }
5721
5722                 try_return( ntStatus);
5723             }
5724
5725             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
5726                             TRUE);
5727
5728             if( DirectoryCB->NameInformation.TargetName.Length == 0)
5729             {
5730
5731                 //
5732                 // Update the target name
5733                 //
5734
5735                 ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
5736                                                 &DirectoryCB->Flags,
5737                                                 (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
5738                                                 (USHORT)pDirEntry->TargetNameLength);
5739
5740                 if( !NT_SUCCESS( ntStatus))
5741                 {
5742
5743                     AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5744
5745                     try_return( ntStatus);
5746                 }
5747             }
5748
5749             AFSConvertToShared( &DirectoryCB->NonPaged->Lock);
5750         }
5751
5752         //
5753         // Need to pass the full path in for parsing.
5754         //
5755
5756         if( AFSIsRelativeName( &DirectoryCB->NameInformation.TargetName))
5757         {
5758
5759             uniFullPathName.Length = 0;
5760             uniFullPathName.MaximumLength = ParentPathName->Length +
5761                                                     sizeof( WCHAR) +
5762                                                     DirectoryCB->NameInformation.TargetName.Length;
5763
5764             uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
5765                                                                         uniFullPathName.MaximumLength,
5766                                                                         AFS_NAME_BUFFER_SIX_TAG);
5767
5768             if( uniFullPathName.Buffer == NULL)
5769             {
5770
5771                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5772
5773                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5774             }
5775
5776             pwchBuffer = uniFullPathName.Buffer;
5777
5778             RtlZeroMemory( uniFullPathName.Buffer,
5779                            uniFullPathName.MaximumLength);
5780
5781             RtlCopyMemory( uniFullPathName.Buffer,
5782                            ParentPathName->Buffer,
5783                            ParentPathName->Length);
5784
5785             uniFullPathName.Length = ParentPathName->Length;
5786
5787             if( uniFullPathName.Buffer[ (uniFullPathName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
5788                 DirectoryCB->NameInformation.TargetName.Buffer[ 0] != L'\\')
5789             {
5790
5791                 uniFullPathName.Buffer[ uniFullPathName.Length/sizeof( WCHAR)] = L'\\';
5792
5793                 uniFullPathName.Length += sizeof( WCHAR);
5794             }
5795
5796             RtlCopyMemory( &uniFullPathName.Buffer[ uniFullPathName.Length/sizeof( WCHAR)],
5797                            DirectoryCB->NameInformation.TargetName.Buffer,
5798                            DirectoryCB->NameInformation.TargetName.Length);
5799
5800             uniFullPathName.Length += DirectoryCB->NameInformation.TargetName.Length;
5801
5802             uniParsedName.Length = uniFullPathName.Length - ParentPathName->Length;
5803             uniParsedName.MaximumLength = uniParsedName.Length;
5804
5805             uniParsedName.Buffer = &uniFullPathName.Buffer[ ParentPathName->Length/sizeof( WCHAR)];
5806
5807             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5808
5809             //
5810             // We populate up to the current parent
5811             //
5812
5813             if( RelatedNameArray != NULL)
5814             {
5815
5816                 pNameArray = AFSInitNameArray( NULL,
5817                                                RelatedNameArray->MaxElementCount);
5818
5819                 if( pNameArray == NULL)
5820                 {
5821
5822                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5823                 }
5824
5825                 ntStatus = AFSPopulateNameArrayFromRelatedArray( pNameArray,
5826                                                                  RelatedNameArray,
5827                                                                  ParentDirectoryCB);
5828             }
5829             else
5830             {
5831
5832                 pNameArray = AFSInitNameArray( NULL,
5833                                                0);
5834
5835                 if( pNameArray == NULL)
5836                 {
5837
5838                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5839                 }
5840
5841                 ntStatus = AFSPopulateNameArray( pNameArray,
5842                                                  NULL,
5843                                                  ParentDirectoryCB);
5844             }
5845
5846             if( !NT_SUCCESS( ntStatus))
5847             {
5848
5849                 try_return( ntStatus);
5850             }
5851
5852             pVolumeCB = ParentDirectoryCB->ObjectInformation->VolumeCB;
5853
5854             pParentDirEntry = ParentDirectoryCB;
5855         }
5856         else
5857         {
5858
5859             uniFullPathName.Length = 0;
5860             uniFullPathName.MaximumLength = DirectoryCB->NameInformation.TargetName.Length;
5861
5862             uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
5863                                                                         uniFullPathName.MaximumLength,
5864                                                                         AFS_NAME_BUFFER_SEVEN_TAG);
5865
5866             if( uniFullPathName.Buffer == NULL)
5867             {
5868
5869                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5870
5871                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5872             }
5873
5874             pwchBuffer = uniFullPathName.Buffer;
5875
5876             RtlZeroMemory( uniFullPathName.Buffer,
5877                            uniFullPathName.MaximumLength);
5878
5879             RtlCopyMemory( uniFullPathName.Buffer,
5880                            DirectoryCB->NameInformation.TargetName.Buffer,
5881                            DirectoryCB->NameInformation.TargetName.Length);
5882
5883             uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
5884
5885             //
5886             // This name should begin with the \afs server so parse it off and check it
5887             //
5888
5889             FsRtlDissectName( uniFullPathName,
5890                               &uniComponentName,
5891                               &uniRemainingPath);
5892
5893             if( RtlCompareUnicodeString( &uniComponentName,
5894                                          &AFSServerName,
5895                                          TRUE) != 0)
5896             {
5897
5898                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5899
5900                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
5901                               AFS_TRACE_LEVEL_ERROR,
5902                               "AFSRetrieveFileAttributes Name %wZ contains invalid server name\n",
5903                               &uniFullPathName));
5904
5905                 try_return( ntStatus = STATUS_OBJECT_PATH_INVALID);
5906             }
5907
5908             uniFullPathName = uniRemainingPath;
5909
5910             uniParsedName = uniFullPathName;
5911
5912             ulNameDifference = (ULONG)(uniFullPathName.Length > 0 ? ((char *)uniFullPathName.Buffer - (char *)pwchBuffer) : 0);
5913
5914             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5915
5916             //
5917             // Our name array
5918             //
5919
5920             pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
5921                                            0);
5922
5923             if( pNameArray == NULL)
5924             {
5925
5926                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5927             }
5928
5929             pVolumeCB = AFSGlobalRoot;
5930
5931             pParentDirEntry = AFSGlobalRoot->DirectoryCB;
5932         }
5933
5934         //
5935         // Increment the ref count on the volume and dir entry for correct processing below
5936         //
5937
5938         VolumeReferenceReason = AFS_VOLUME_REFERENCE_FILE_ATTRS;
5939
5940         lCount = AFSVolumeIncrement( pVolumeCB,
5941                                      VolumeReferenceReason);
5942
5943         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
5944                       AFS_TRACE_LEVEL_VERBOSE,
5945                       "AFSRetrieveFileAttributes Increment count on volume %p Reason %u Cnt %d\n",
5946                       pVolumeCB,
5947                       VolumeReferenceReason,
5948                       lCount));
5949
5950         lCount = InterlockedIncrement( &pParentDirEntry->DirOpenReferenceCount);
5951
5952         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5953                       AFS_TRACE_LEVEL_VERBOSE,
5954                       "AFSRetrieveFileAttributes Increment count on %wZ DE %p Ccb %p Cnt %d\n",
5955                       &pParentDirEntry->NameInformation.FileName,
5956                       pParentDirEntry,
5957                       NULL,
5958                       lCount));
5959
5960         ntStatus = AFSLocateNameEntry( NULL,
5961                                        NULL,
5962                                        &uniFullPathName,
5963                                        &uniParsedName,
5964                                        pNameArray,
5965                                        AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL,
5966                                        pVolumeCB,
5967                                        pParentDirEntry,
5968                                        &pNewVolumeCB,
5969                                        &NewVolumeReferenceReason,
5970                                        &pNewParentDirEntry,
5971                                        &pDirectoryEntry,
5972                                        NULL,
5973                                        &uniDFSTargetName);
5974
5975         if ( pNewVolumeCB != NULL)
5976         {
5977             //
5978             // AFSLocateNameEntry returns pNewVolumeCB with a reference held
5979             // even if pVolumeCB == pNewVolumeCB.  It is always safe to release
5980             // the reference on pVolumeCB that was held prior to the call.
5981             // If pVolumeCB == pNewVolumeCB, the reference from AFSLocateNameEntry
5982             // will be released second.
5983             //
5984
5985             lCount = AFSVolumeDecrement( pVolumeCB,
5986                                          VolumeReferenceReason);
5987
5988             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
5989                           AFS_TRACE_LEVEL_VERBOSE,
5990                           "AFSRetrieveFileAttributes Decrement count on volume %p Reason %u Cnt %d\n",
5991                           pVolumeCB,
5992                           VolumeReferenceReason,
5993                           lCount));
5994
5995             pVolumeCB = pNewVolumeCB;
5996
5997             pNewVolumeCB = NULL;
5998
5999             VolumeReferenceReason = NewVolumeReferenceReason;
6000
6001             NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6002         }
6003
6004         //
6005         // AFSLocateNameEntry does not alter the reference count of
6006         // pParentDirectoryCB and it returns pNewParentDirectoryCB with
6007         // a reference held.
6008         //
6009
6010         lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6011
6012         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6013                       AFS_TRACE_LEVEL_VERBOSE,
6014                       "AFSRetrieveFileAttributes DecrementX count on %wZ DE %p Cnt %d\n",
6015                       &pParentDirEntry->NameInformation.FileName,
6016                       pParentDirEntry,
6017                       lCount));
6018
6019         pParentDirEntry = pNewParentDirEntry;
6020
6021         pNewParentDirEntry = NULL;
6022
6023         if( !NT_SUCCESS( ntStatus))
6024         {
6025             try_return( ntStatus);
6026         }
6027
6028         //
6029         // If the status is STATUS_REPARSE then attempt to retrieve the attributes from the target name returned
6030         //
6031
6032         if( ntStatus == STATUS_REPARSE)
6033         {
6034
6035             ntStatus = AFSRetrieveTargetFileInfo( &uniDFSTargetName,
6036                                                   FileInfo);
6037
6038             try_return( ntStatus);
6039         }
6040
6041         //
6042         // Store off the information
6043         //
6044
6045         FileInfo->FileAttributes = pDirectoryEntry->ObjectInformation->FileAttributes;
6046
6047         //
6048         // Check for the mount point being returned
6049         //
6050
6051         if( pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_MOUNTPOINT ||
6052             pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DFSLINK)
6053         {
6054
6055             FileInfo->FileAttributes |= (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
6056         }
6057         else if( pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
6058         {
6059
6060             if ( FileInfo->FileAttributes == FILE_ATTRIBUTE_NORMAL)
6061             {
6062
6063                 FileInfo->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
6064             }
6065             else
6066             {
6067
6068                 FileInfo->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
6069             }
6070         }
6071
6072         FileInfo->AllocationSize = pDirectoryEntry->ObjectInformation->AllocationSize;
6073
6074         FileInfo->EndOfFile = pDirectoryEntry->ObjectInformation->EndOfFile;
6075
6076         FileInfo->CreationTime = pDirectoryEntry->ObjectInformation->CreationTime;
6077
6078         FileInfo->LastAccessTime = pDirectoryEntry->ObjectInformation->LastAccessTime;
6079
6080         FileInfo->LastWriteTime = pDirectoryEntry->ObjectInformation->LastWriteTime;
6081
6082         FileInfo->ChangeTime = pDirectoryEntry->ObjectInformation->ChangeTime;
6083
6084 try_exit:
6085
6086         if( pDirEntry != NULL)
6087         {
6088
6089             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
6090         }
6091
6092         if( pDirectoryEntry != NULL)
6093         {
6094
6095             lCount = InterlockedDecrement( &pDirectoryEntry->DirOpenReferenceCount);
6096
6097             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6098                           AFS_TRACE_LEVEL_VERBOSE,
6099                           "AFSRetrieveFileAttributes Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6100                           &pDirectoryEntry->NameInformation.FileName,
6101                           pDirectoryEntry,
6102                           NULL,
6103                           lCount));
6104
6105             ASSERT( lCount >= 0);
6106         }
6107
6108         if ( pParentDirEntry != NULL)
6109         {
6110
6111             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6112
6113             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6114                           AFS_TRACE_LEVEL_VERBOSE,
6115                           "AFSRetrieveFileAttributes Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
6116                           &pParentDirEntry->NameInformation.FileName,
6117                           pParentDirEntry,
6118                           NULL,
6119                           lCount));
6120
6121             ASSERT( lCount >= 0);
6122         }
6123
6124         if( pVolumeCB != NULL)
6125         {
6126
6127             lCount = AFSVolumeDecrement( pVolumeCB,
6128                                          VolumeReferenceReason);
6129
6130             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6131                           AFS_TRACE_LEVEL_VERBOSE,
6132                           "AFSRetrieveFileAttributes Decrement2 count on volume %p Reason %u Cnt %d\n",
6133                           pVolumeCB,
6134                           VolumeReferenceReason,
6135                           lCount));
6136         }
6137
6138         if( pNameArray != NULL)
6139         {
6140
6141             AFSFreeNameArray( pNameArray);
6142         }
6143
6144         if( pwchBuffer != NULL)
6145         {
6146
6147             //
6148             // Always free the buffer that we allocated as AFSLocateNameEntry
6149             // will not free it.  If uniFullPathName.Buffer was allocated by
6150             // AFSLocateNameEntry, then we must free that as well.
6151             // Check that the uniFullPathName.Buffer in the string is not the same
6152             // offset by the length of the server name
6153             //
6154
6155             if( uniFullPathName.Length > 0 &&
6156                 pwchBuffer != (WCHAR *)((char *)uniFullPathName.Buffer - ulNameDifference))
6157             {
6158
6159                 AFSExFreePoolWithTag( uniFullPathName.Buffer, 0);
6160             }
6161
6162             AFSExFreePoolWithTag( pwchBuffer, 0);
6163         }
6164
6165         if ( uniDFSTargetName.Buffer != NULL)
6166         {
6167
6168             AFSExFreePoolWithTag( uniDFSTargetName.Buffer,
6169                                   AFS_REPARSE_NAME_TAG);
6170         }
6171     }
6172
6173     return ntStatus;
6174 }
6175
6176 AFSObjectInfoCB *
6177 AFSAllocateObjectInfo( IN AFSObjectInfoCB *ParentObjectInfo,
6178                        IN ULONGLONG HashIndex)
6179 {
6180
6181     NTSTATUS ntStatus = STATUS_SUCCESS;
6182     AFSObjectInfoCB *pObjectInfo = NULL;
6183     LONG lCount;
6184
6185     __Enter
6186     {
6187
6188         pObjectInfo = (AFSObjectInfoCB *)AFSExAllocatePoolWithTag( PagedPool,
6189                                                                    sizeof( AFSObjectInfoCB),
6190                                                                    AFS_OBJECT_INFO_TAG);
6191
6192         if( pObjectInfo == NULL)
6193         {
6194
6195             try_return( pObjectInfo);
6196         }
6197
6198         RtlZeroMemory( pObjectInfo,
6199                        sizeof( AFSObjectInfoCB));
6200
6201         pObjectInfo->NonPagedInfo = (AFSNonPagedObjectInfoCB *)AFSExAllocatePoolWithTag( NonPagedPool,
6202                                                                                          sizeof( AFSNonPagedObjectInfoCB),
6203                                                                                          AFS_NP_OBJECT_INFO_TAG);
6204
6205         if( pObjectInfo->NonPagedInfo == NULL)
6206         {
6207
6208             AFSExFreePoolWithTag( pObjectInfo, AFS_OBJECT_INFO_TAG);
6209
6210             try_return( pObjectInfo = NULL);
6211         }
6212
6213         ExInitializeResourceLite( &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock);
6214
6215         ExInitializeResourceLite( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
6216
6217         pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock = &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock;
6218
6219         if( ParentObjectInfo != NULL)
6220         {
6221
6222             pObjectInfo->VolumeCB = ParentObjectInfo->VolumeCB;
6223
6224             pObjectInfo->ParentFileId = ParentObjectInfo->FileId;
6225
6226             SetFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_PARENT_FID);
6227
6228             AFSAcquireShared( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
6229                               TRUE);
6230
6231             lCount = AFSObjectInfoIncrement( ParentObjectInfo,
6232                                              AFS_OBJECT_REFERENCE_CHILD);
6233
6234             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6235                           AFS_TRACE_LEVEL_VERBOSE,
6236                           "AFSAllocateObjectInfo Increment count on parent object %p Cnt %d\n",
6237                           ParentObjectInfo,
6238                           lCount));
6239
6240             AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
6241         }
6242
6243         //
6244         // Initialize the access time
6245         //
6246
6247         KeQueryTickCount( &pObjectInfo->LastAccessCount);
6248
6249         if( HashIndex != 0)
6250         {
6251
6252             ASSERT( ParentObjectInfo);
6253
6254             //
6255             // Insert the entry into the object tree and list
6256             //
6257
6258             pObjectInfo->TreeEntry.HashIndex = HashIndex;
6259
6260             if( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead == NULL)
6261             {
6262
6263                 ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead = &pObjectInfo->TreeEntry;
6264             }
6265             else
6266             {
6267
6268                 ntStatus = AFSInsertHashEntry( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
6269                                                &pObjectInfo->TreeEntry);
6270
6271                 ASSERT( NT_SUCCESS( ntStatus));
6272             }
6273
6274             //
6275             // And the object list in the volume
6276             //
6277
6278             if( ParentObjectInfo->VolumeCB->ObjectInfoListHead == NULL)
6279             {
6280
6281                 ParentObjectInfo->VolumeCB->ObjectInfoListHead = pObjectInfo;
6282             }
6283             else
6284             {
6285
6286                 ParentObjectInfo->VolumeCB->ObjectInfoListTail->ListEntry.fLink = (void *)pObjectInfo;
6287
6288                 pObjectInfo->ListEntry.bLink = (void *)ParentObjectInfo->VolumeCB->ObjectInfoListTail;
6289             }
6290
6291             ParentObjectInfo->VolumeCB->ObjectInfoListTail = pObjectInfo;
6292
6293             //
6294             // Indicate the object is in the hash tree and linked list in the volume
6295             //
6296
6297             SetFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE | AFS_OBJECT_INSERTED_VOLUME_LIST);
6298         }
6299
6300 try_exit:
6301
6302         NOTHING;
6303     }
6304
6305     return pObjectInfo;
6306 }
6307
6308 LONG
6309 AFSObjectInfoIncrement( IN AFSObjectInfoCB *ObjectInfo,
6310                         IN LONG Reason)
6311 {
6312
6313     LONG lCount;
6314
6315     if ( ObjectInfo->ObjectReferenceCount == 0)
6316     {
6317
6318         AFSAcquireExcl( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6319                         TRUE);
6320
6321         lCount = InterlockedIncrement( &ObjectInfo->ObjectReferenceCount);
6322     }
6323     else
6324     {
6325
6326         AFSAcquireShared( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6327                           TRUE);
6328
6329         lCount = InterlockedIncrement( &ObjectInfo->ObjectReferenceCount);
6330
6331         if ( lCount == 1)
6332         {
6333
6334             AFSReleaseResource( &ObjectInfo->NonPagedInfo->ObjectInfoLock);
6335
6336             AFSAcquireExcl( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6337                             TRUE);
6338         }
6339     }
6340
6341     InterlockedIncrement( &ObjectInfo->ObjectReferences[ Reason]);
6342
6343     AFSReleaseResource( &ObjectInfo->NonPagedInfo->ObjectInfoLock);
6344
6345     return lCount;
6346 }
6347
6348 LONG
6349 AFSObjectInfoDecrement( IN AFSObjectInfoCB *ObjectInfo,
6350                         IN LONG Reason)
6351 {
6352
6353     LONG lCount, lCount2;
6354
6355     AFSAcquireShared( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6356                       TRUE);
6357
6358     lCount = InterlockedDecrement( &ObjectInfo->ObjectReferenceCount);
6359
6360     if ( lCount == 0)
6361     {
6362
6363         lCount = InterlockedIncrement( &ObjectInfo->ObjectReferenceCount);
6364
6365         AFSReleaseResource(&ObjectInfo->NonPagedInfo->ObjectInfoLock);
6366
6367         AFSAcquireExcl( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6368                         TRUE);
6369
6370         lCount = InterlockedDecrement( &ObjectInfo->ObjectReferenceCount);
6371     }
6372
6373     lCount2 = InterlockedDecrement( &ObjectInfo->ObjectReferences[ Reason]);
6374
6375     ASSERT( lCount2 >= 0);
6376
6377     AFSReleaseResource( &ObjectInfo->NonPagedInfo->ObjectInfoLock);
6378
6379     return lCount;
6380 }
6381
6382 AFSObjectInfoCB *
6383 AFSFindObjectInfo( IN AFSVolumeCB *VolumeCB,
6384                    IN AFSFileID   *FileId,
6385                    IN BOOLEAN      bUpdateLastUse)
6386 {
6387     DWORD            ntStatus = STATUS_SUCCESS;
6388     ULONGLONG        ullIndex;
6389     AFSObjectInfoCB *pObjectInfo = NULL;
6390     LONG             lCount;
6391
6392     ullIndex = AFSCreateLowIndex( FileId);
6393
6394     AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
6395                       TRUE);
6396
6397     if ( AFSIsEqualFID( &VolumeCB->ObjectInformation.FileId, FileId))
6398     {
6399
6400         pObjectInfo = &VolumeCB->ObjectInformation;
6401     }
6402     else
6403     {
6404
6405         ntStatus = AFSLocateHashEntry( VolumeCB->ObjectInfoTree.TreeHead,
6406                                        ullIndex,
6407                                        (AFSBTreeEntry **)&pObjectInfo);
6408     }
6409
6410     if ( NT_SUCCESS( ntStatus)) {
6411
6412         lCount = AFSObjectInfoIncrement( pObjectInfo,
6413                                          AFS_OBJECT_REFERENCE_FIND);
6414
6415         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6416                       AFS_TRACE_LEVEL_VERBOSE,
6417                       "AFSFindObjectInfo Decrement count on object %p Cnt %d\n",
6418                       pObjectInfo,
6419                       lCount));
6420
6421         if ( bUpdateLastUse)
6422         {
6423
6424             KeQueryTickCount( &pObjectInfo->LastAccessCount);
6425         }
6426     }
6427
6428     AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
6429
6430     return pObjectInfo;
6431 }
6432
6433 void
6434 AFSReleaseObjectInfo( IN AFSObjectInfoCB **ppObjectInfo)
6435 {
6436     LONG lCount;
6437
6438     lCount = AFSObjectInfoDecrement( *ppObjectInfo,
6439                                      AFS_OBJECT_REFERENCE_FIND);
6440
6441     AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6442                   AFS_TRACE_LEVEL_VERBOSE,
6443                   "AFSReleaseObjectInfo Decrement count on object %p Cnt %d\n",
6444                   *ppObjectInfo,
6445                   lCount));
6446
6447     *ppObjectInfo = NULL;
6448 }
6449
6450 void
6451 AFSDeleteObjectInfo( IN AFSObjectInfoCB **ppObjectInfo)
6452 {
6453     BOOLEAN bAcquiredTreeLock = FALSE;
6454     AFSObjectInfoCB *pObjectInfo = NULL;
6455     AFSVolumeCB * pVolume = NULL;
6456     BOOLEAN bHeldInService;
6457     AFSObjectInfoCB * pParentObjectInfo = NULL;
6458     AFSFileID FileId;
6459     LONG lCount;
6460
6461     __Enter
6462     {
6463         if ( BooleanFlagOn( (*ppObjectInfo)->Flags, AFS_OBJECT_ROOT_VOLUME))
6464         {
6465
6466             //
6467             // AFSDeleteObjectInfo should never be called on the ObjectInformationCB
6468             // embedded in the VolumeCB.
6469             //
6470
6471             ASSERT( FALSE);
6472
6473             return;
6474         }
6475
6476         pVolume = (*ppObjectInfo)->VolumeCB;
6477
6478         if( !ExIsResourceAcquiredExclusiveLite( pVolume->ObjectInfoTree.TreeLock))
6479         {
6480
6481             ASSERT( !ExIsResourceAcquiredLite( pVolume->ObjectInfoTree.TreeLock));
6482
6483             AFSAcquireExcl( pVolume->ObjectInfoTree.TreeLock,
6484                             TRUE);
6485
6486             bAcquiredTreeLock = TRUE;
6487         }
6488
6489         for ( lCount = 0; lCount < AFS_OBJECT_REFERENCE_MAX; lCount++)
6490         {
6491
6492             ASSERT( (*ppObjectInfo)->ObjectReferences[ lCount] >= 0);
6493         }
6494
6495         ASSERT( (*ppObjectInfo)->ObjectReferenceCount == 0);
6496
6497         pObjectInfo = (AFSObjectInfoCB *) InterlockedCompareExchangePointer( (PVOID *)ppObjectInfo,
6498                                                                              NULL,
6499                                                                              *ppObjectInfo);
6500
6501         if ( pObjectInfo == NULL)
6502         {
6503
6504             try_return( NOTHING);
6505         }
6506
6507         ASSERT( *ppObjectInfo == NULL);
6508
6509         if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_PARENT_FID))
6510         {
6511
6512             pParentObjectInfo = AFSFindObjectInfo( pVolume,
6513                                                    &pObjectInfo->ParentFileId,
6514                                                    FALSE);
6515
6516             if( pParentObjectInfo != NULL)
6517             {
6518
6519                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_PARENT_FID);
6520
6521                 AFSAcquireShared( pParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
6522                                   TRUE);
6523
6524                 lCount = AFSObjectInfoDecrement( pParentObjectInfo,
6525                                                  AFS_OBJECT_REFERENCE_CHILD);
6526
6527                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6528                               AFS_TRACE_LEVEL_VERBOSE,
6529                               "AFSDeleteObjectInfo Decrement count on parent object %p Cnt %d\n",
6530                               pParentObjectInfo,
6531                               lCount));
6532
6533                 AFSReleaseResource( pParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
6534
6535                 AFSReleaseObjectInfo( &pParentObjectInfo);
6536             }
6537         }
6538
6539         //
6540         // Remove it from the tree and list if it was inserted
6541         //
6542
6543         if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
6544         {
6545
6546             AFSRemoveHashEntry( &pVolume->ObjectInfoTree.TreeHead,
6547                                 &pObjectInfo->TreeEntry);
6548         }
6549
6550         if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_VOLUME_LIST))
6551         {
6552
6553             if( pObjectInfo->ListEntry.fLink == NULL)
6554             {
6555
6556                 pVolume->ObjectInfoListTail = (AFSObjectInfoCB *)pObjectInfo->ListEntry.bLink;
6557
6558                 if( pVolume->ObjectInfoListTail != NULL)
6559                 {
6560
6561                     pVolume->ObjectInfoListTail->ListEntry.fLink = NULL;
6562                 }
6563             }
6564             else
6565             {
6566
6567                 ((AFSObjectInfoCB *)(pObjectInfo->ListEntry.fLink))->ListEntry.bLink = pObjectInfo->ListEntry.bLink;
6568             }
6569
6570             if( pObjectInfo->ListEntry.bLink == NULL)
6571             {
6572
6573                 pVolume->ObjectInfoListHead = (AFSObjectInfoCB *)pObjectInfo->ListEntry.fLink;
6574
6575                 if( pVolume->ObjectInfoListHead != NULL)
6576                 {
6577
6578                     pVolume->ObjectInfoListHead->ListEntry.bLink = NULL;
6579                 }
6580             }
6581             else
6582             {
6583
6584                 ((AFSObjectInfoCB *)(pObjectInfo->ListEntry.bLink))->ListEntry.fLink = pObjectInfo->ListEntry.fLink;
6585             }
6586         }
6587
6588         bHeldInService = BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE);
6589
6590         if( bHeldInService)
6591         {
6592
6593             FileId = pObjectInfo->FileId;
6594         }
6595
6596         ASSERT( pObjectInfo->ObjectReferenceCount == 0);
6597
6598         ExDeleteResourceLite( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
6599
6600         ExDeleteResourceLite( &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock);
6601
6602         AFSExFreePoolWithTag( pObjectInfo->NonPagedInfo, AFS_NP_OBJECT_INFO_TAG);
6603
6604         AFSExFreePoolWithTag( pObjectInfo, AFS_OBJECT_INFO_TAG);
6605
6606 try_exit:
6607
6608         if( bAcquiredTreeLock)
6609         {
6610
6611             AFSReleaseResource( pVolume->ObjectInfoTree.TreeLock);
6612         }
6613
6614         //
6615         // Release the fid in the service
6616         //
6617
6618         if( bHeldInService)
6619         {
6620
6621             AFSReleaseFid( &FileId);
6622         }
6623     }
6624
6625     return;
6626 }
6627
6628 NTSTATUS
6629 AFSEvaluateRootEntry( IN AFSDirectoryCB *DirectoryCB,
6630                       OUT AFSDirectoryCB **TargetDirEntry)
6631 {
6632
6633     NTSTATUS ntStatus = STATUS_SUCCESS;
6634     AFSDirEnumEntry *pDirEntry = NULL;
6635     UNICODE_STRING uniFullPathName = {0};
6636     AFSNameArrayHdr    *pNameArray = NULL;
6637     AFSVolumeCB *pVolumeCB = NULL;
6638     LONG VolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6639     AFSVolumeCB *pNewVolumeCB = NULL;
6640     LONG NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6641     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
6642     AFSDirectoryCB *pNewParentDirEntry = NULL;
6643     WCHAR *pwchBuffer = NULL;
6644     UNICODE_STRING uniComponentName, uniRemainingPath, uniParsedName;
6645     ULONG ulNameDifference = 0;
6646     GUID    stAuthGroup;
6647     LONG lCount;
6648
6649     __Enter
6650     {
6651
6652         ntStatus = AFSRetrieveValidAuthGroup( NULL,
6653                                               DirectoryCB->ObjectInformation,
6654                                               FALSE,
6655                                               &stAuthGroup);
6656
6657         if( !NT_SUCCESS( ntStatus))
6658         {
6659             try_return( ntStatus);
6660         }
6661
6662         //
6663         // Retrieve a target name for the entry
6664         //
6665
6666         AFSAcquireShared( &DirectoryCB->NonPaged->Lock,
6667                           TRUE);
6668
6669         if( DirectoryCB->NameInformation.TargetName.Length == 0)
6670         {
6671
6672             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6673
6674             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
6675                                               &stAuthGroup,
6676                                               FALSE,
6677                                               &pDirEntry);
6678
6679             if( !NT_SUCCESS( ntStatus) ||
6680                 pDirEntry->TargetNameLength == 0)
6681             {
6682
6683                 if( pDirEntry != NULL)
6684                 {
6685
6686                     ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
6687                 }
6688
6689                 try_return( ntStatus);
6690             }
6691
6692             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
6693                             TRUE);
6694
6695             if( DirectoryCB->NameInformation.TargetName.Length == 0)
6696             {
6697
6698                 //
6699                 // Update the target name
6700                 //
6701
6702                 ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
6703                                                 &DirectoryCB->Flags,
6704                                                 (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
6705                                                 (USHORT)pDirEntry->TargetNameLength);
6706
6707                 if( !NT_SUCCESS( ntStatus))
6708                 {
6709
6710                     AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6711
6712                     try_return( ntStatus);
6713                 }
6714             }
6715
6716             AFSConvertToShared( &DirectoryCB->NonPaged->Lock);
6717         }
6718
6719         //
6720         // Need to pass the full path in for parsing.
6721         //
6722
6723         uniFullPathName.Length = 0;
6724         uniFullPathName.MaximumLength = DirectoryCB->NameInformation.TargetName.Length;
6725
6726         uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
6727                                                                     uniFullPathName.MaximumLength,
6728                                                                     AFS_NAME_BUFFER_EIGHT_TAG);
6729
6730         if( uniFullPathName.Buffer == NULL)
6731         {
6732
6733             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6734
6735             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6736         }
6737
6738         pwchBuffer = uniFullPathName.Buffer;
6739
6740         RtlZeroMemory( uniFullPathName.Buffer,
6741                        uniFullPathName.MaximumLength);
6742
6743         RtlCopyMemory( uniFullPathName.Buffer,
6744                        DirectoryCB->NameInformation.TargetName.Buffer,
6745                        DirectoryCB->NameInformation.TargetName.Length);
6746
6747         uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6748
6749         //
6750         // This name should begin with the \afs server so parse it off and chech it
6751         //
6752
6753         FsRtlDissectName( uniFullPathName,
6754                           &uniComponentName,
6755                           &uniRemainingPath);
6756
6757         if( RtlCompareUnicodeString( &uniComponentName,
6758                                      &AFSServerName,
6759                                      TRUE) != 0)
6760         {
6761
6762             //
6763             // Try evaluating the full path
6764             //
6765
6766             uniFullPathName.Buffer = pwchBuffer;
6767
6768             uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6769
6770             uniFullPathName.MaximumLength = uniFullPathName.Length;
6771         }
6772         else
6773         {
6774
6775             uniFullPathName = uniRemainingPath;
6776         }
6777
6778         uniParsedName = uniFullPathName;
6779
6780         ulNameDifference = (ULONG)(uniFullPathName.Length > 0 ? ((char *)uniFullPathName.Buffer - (char *)pwchBuffer) : 0);
6781
6782         AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6783
6784         //
6785         // Our name array
6786         //
6787
6788         pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
6789                                        0);
6790
6791         if( pNameArray == NULL)
6792         {
6793
6794             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6795         }
6796
6797         pVolumeCB = AFSGlobalRoot;
6798
6799         pParentDirEntry = AFSGlobalRoot->DirectoryCB;
6800
6801         VolumeReferenceReason = AFS_VOLUME_REFERENCE_EVAL_ROOT;
6802
6803         lCount = AFSVolumeIncrement( pVolumeCB,
6804                                      VolumeReferenceReason);
6805
6806         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6807                       AFS_TRACE_LEVEL_VERBOSE,
6808                       "AFSEvaluateRootEntry Increment count on volume %p Reason %u Cnt %d\n",
6809                       pVolumeCB,
6810                       VolumeReferenceReason,
6811                       lCount));
6812
6813         lCount = InterlockedIncrement( &pParentDirEntry->DirOpenReferenceCount);
6814
6815         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6816                       AFS_TRACE_LEVEL_VERBOSE,
6817                       "AFSEvaluateRootEntry Increment count on %wZ DE %p Ccb %p Cnt %d\n",
6818                       &pParentDirEntry->NameInformation.FileName,
6819                       pParentDirEntry,
6820                       NULL,
6821                       lCount));
6822
6823         ntStatus = AFSLocateNameEntry( NULL,
6824                                        NULL,
6825                                        &uniFullPathName,
6826                                        &uniParsedName,
6827                                        pNameArray,
6828                                        0,
6829                                        pVolumeCB,
6830                                        pParentDirEntry,
6831                                        &pNewVolumeCB,
6832                                        &VolumeReferenceReason,
6833                                        &pNewParentDirEntry,
6834                                        &pDirectoryEntry,
6835                                        NULL,
6836                                        NULL);
6837
6838         if ( pNewVolumeCB != NULL)
6839         {
6840             //
6841             // AFSLocateNameEntry returns pNewVolumeCB with a reference held
6842             // even if pVolumeCB == pNewVolumeCB.  It is always safe to release
6843             // the reference on pVolumeCB that was held prior to the call.
6844             // If pVolumeCB == pNewVolumeCB, the reference from AFSLocateNameEntry
6845             // will be released second.
6846             //
6847
6848             lCount = AFSVolumeDecrement( pVolumeCB,
6849                                          VolumeReferenceReason);
6850
6851             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6852                           AFS_TRACE_LEVEL_VERBOSE,
6853                           "AFSEvaluateRootEntry Decrement count on volume %p Reason %u Cnt %d\n",
6854                           pVolumeCB,
6855                           VolumeReferenceReason,
6856                           lCount));
6857
6858             pVolumeCB = pNewVolumeCB;
6859
6860             pNewVolumeCB = NULL;
6861
6862             VolumeReferenceReason = NewVolumeReferenceReason;
6863
6864             NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6865         }
6866
6867         //
6868         // AFSLocateNameEntry does not alter the reference count of
6869         // pParentDirectoryCB and it returns pNewParentDirectoryCB with
6870         // a reference held.
6871         //
6872
6873         lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6874
6875         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6876                       AFS_TRACE_LEVEL_VERBOSE,
6877                       "AFSEvaluateRootEntry DecrementX count on %wZ DE %p Cnt %d\n",
6878                       &pParentDirEntry->NameInformation.FileName,
6879                       pParentDirEntry,
6880                       lCount));
6881
6882         pParentDirEntry = pNewParentDirEntry;
6883
6884         pNewParentDirEntry = NULL;
6885
6886         if( !NT_SUCCESS( ntStatus) ||
6887             ntStatus == STATUS_REPARSE)
6888         {
6889
6890             pVolumeCB = NULL;
6891
6892             try_return( ntStatus);
6893         }
6894
6895         //
6896         // Pass back the target dir entry for this request
6897         // The caller must release the DirOpenReferenceCount
6898         //
6899
6900         *TargetDirEntry = pDirectoryEntry;
6901
6902         pDirectoryEntry = NULL;
6903
6904 try_exit:
6905
6906         if( pDirectoryEntry != NULL)
6907         {
6908
6909             lCount = InterlockedDecrement( &pDirectoryEntry->DirOpenReferenceCount);
6910
6911             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6912                           AFS_TRACE_LEVEL_VERBOSE,
6913                           "AFSEvaluateRootEntry Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6914                           &pDirectoryEntry->NameInformation.FileName,
6915                           pDirectoryEntry,
6916                           NULL,
6917                           lCount));
6918
6919             ASSERT( lCount >= 0);
6920         }
6921
6922         if ( pParentDirEntry != NULL)
6923         {
6924
6925             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6926
6927             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6928                           AFS_TRACE_LEVEL_VERBOSE,
6929                           "AFSEvaluateRootEntry Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
6930                           &pParentDirEntry->NameInformation.FileName,
6931                           pParentDirEntry,
6932                           NULL,
6933                           lCount));
6934
6935             ASSERT( lCount >= 0);
6936         }
6937
6938         if( pDirEntry != NULL)
6939         {
6940
6941             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
6942         }
6943
6944         if( pVolumeCB != NULL)
6945         {
6946
6947             lCount = AFSVolumeDecrement( pVolumeCB,
6948                                          VolumeReferenceReason);
6949
6950             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6951                           AFS_TRACE_LEVEL_VERBOSE,
6952                           "AFSEvaluateRootEntry Decrement2 count on volume %p Reason %u Cnt %d\n",
6953                           pVolumeCB,
6954                           VolumeReferenceReason,
6955                           lCount));
6956         }
6957
6958         if( pNameArray != NULL)
6959         {
6960
6961             AFSFreeNameArray( pNameArray);
6962         }
6963
6964         if( pwchBuffer != NULL)
6965         {
6966
6967             //
6968             // Always free the buffer that we allocated as AFSLocateNameEntry
6969             // will not free it.  If uniFullPathName.Buffer was allocated by
6970             // AFSLocateNameEntry, then we must free that as well.
6971             // Check that the uniFullPathName.Buffer in the string is not the same
6972             // offset by the length of the server name
6973             //
6974
6975             if( uniFullPathName.Length > 0 &&
6976                 pwchBuffer != (WCHAR *)((char *)uniFullPathName.Buffer - ulNameDifference))
6977             {
6978
6979                 AFSExFreePoolWithTag( uniFullPathName.Buffer, 0);
6980             }
6981
6982             AFSExFreePoolWithTag( pwchBuffer, 0);
6983         }
6984     }
6985
6986     return ntStatus;
6987 }
6988
6989 NTSTATUS
6990 AFSCleanupFcb( IN AFSFcb *Fcb,
6991                IN BOOLEAN ForceFlush)
6992 {
6993
6994     NTSTATUS ntStatus = STATUS_SUCCESS;
6995     AFSDeviceExt *pRDRDeviceExt = NULL, *pControlDeviceExt = NULL;
6996     LARGE_INTEGER liTime;
6997     IO_STATUS_BLOCK stIoStatus;
6998
6999     __Enter
7000     {
7001
7002         pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
7003
7004         pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
7005
7006         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
7007         {
7008
7009             if( !BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) &&
7010                 !BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7011             {
7012
7013                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7014                               AFS_TRACE_LEVEL_VERBOSE,
7015                               "AFSCleanupEntry Acquiring Fcb lock %p EXCL %08lX\n",
7016                               &Fcb->NPFcb->Resource,
7017                               PsGetCurrentThread()));
7018
7019                 AFSAcquireExcl( &Fcb->NPFcb->Resource,
7020                                   TRUE);
7021
7022                 if( Fcb->OpenReferenceCount > 0)
7023                 {
7024
7025                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7026                                   AFS_TRACE_LEVEL_VERBOSE,
7027                                   "AFSCleanupEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
7028                                   &Fcb->NPFcb->SectionObjectResource,
7029                                   PsGetCurrentThread()));
7030
7031                     AFSAcquireExcl( &Fcb->NPFcb->SectionObjectResource,
7032                                     TRUE);
7033
7034                     __try
7035                     {
7036
7037                         CcFlushCache( &Fcb->NPFcb->SectionObjectPointers,
7038                                       NULL,
7039                                       0,
7040                                       &stIoStatus);
7041
7042                         if( !NT_SUCCESS( stIoStatus.Status))
7043                         {
7044
7045                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7046                                           AFS_TRACE_LEVEL_ERROR,
7047                                           "AFSCleanupFcb CcFlushCache [1] failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
7048                                           Fcb->ObjectInformation->FileId.Cell,
7049                                           Fcb->ObjectInformation->FileId.Volume,
7050                                           Fcb->ObjectInformation->FileId.Vnode,
7051                                           Fcb->ObjectInformation->FileId.Unique,
7052                                           stIoStatus.Status,
7053                                           stIoStatus.Information));
7054
7055                             ntStatus = stIoStatus.Status;
7056                         }
7057
7058                         if (  Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
7059                         {
7060
7061                             if ( !CcPurgeCacheSection( &Fcb->NPFcb->SectionObjectPointers,
7062                                                        NULL,
7063                                                        0,
7064                                                        FALSE))
7065                             {
7066
7067                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7068                                               AFS_TRACE_LEVEL_WARNING,
7069                                               "AFSCleanupFcb CcPurgeCacheSection [1] failure FID %08lX-%08lX-%08lX-%08lX\n",
7070                                               Fcb->ObjectInformation->FileId.Cell,
7071                                               Fcb->ObjectInformation->FileId.Volume,
7072                                               Fcb->ObjectInformation->FileId.Vnode,
7073                                               Fcb->ObjectInformation->FileId.Unique));
7074
7075                                 SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7076                             }
7077                         }
7078                     }
7079                     __except( EXCEPTION_EXECUTE_HANDLER)
7080                     {
7081
7082                         ntStatus = GetExceptionCode();
7083
7084                         AFSDbgTrace(( 0,
7085                                       0,
7086                                       "EXCEPTION - AFSCleanupFcb Cc [1] FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
7087                                       Fcb->ObjectInformation->FileId.Cell,
7088                                       Fcb->ObjectInformation->FileId.Volume,
7089                                       Fcb->ObjectInformation->FileId.Vnode,
7090                                       Fcb->ObjectInformation->FileId.Unique,
7091                                       ntStatus));
7092
7093                         SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7094                     }
7095
7096                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7097                                   AFS_TRACE_LEVEL_VERBOSE,
7098                                   "AFSCleanupFcb Releasing Fcb SectionObject lock %p EXCL %08lX\n",
7099                                   &Fcb->NPFcb->SectionObjectResource,
7100                                   PsGetCurrentThread()));
7101
7102                     AFSReleaseResource( &Fcb->NPFcb->SectionObjectResource);
7103                 }
7104
7105                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7106                               AFS_TRACE_LEVEL_VERBOSE,
7107                               "AFSCleanupEntry Releasing Fcb lock %p EXCL %08lX\n",
7108                               &Fcb->NPFcb->Resource,
7109                               PsGetCurrentThread()));
7110
7111                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7112
7113                 if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7114                 {
7115                     //
7116                     // Wait for any currently running flush or release requests to complete
7117                     //
7118
7119                     AFSWaitOnQueuedFlushes( Fcb);
7120
7121                     //
7122                     // Now perform another flush on the file
7123                     //
7124
7125                     if( !NT_SUCCESS( AFSFlushExtents( Fcb,
7126                                                       NULL)))
7127                     {
7128
7129                         AFSReleaseExtentsWithFlush( Fcb,
7130                                                     NULL,
7131                                                     TRUE);
7132                     }
7133                 }
7134             }
7135
7136             if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7137             {
7138
7139                 if( Fcb->OpenReferenceCount == 0 ||
7140                     BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
7141                     BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7142                 {
7143
7144                     AFSTearDownFcbExtents( Fcb,
7145                                            NULL);
7146                 }
7147             }
7148
7149             try_return( ntStatus);
7150         }
7151
7152         KeQueryTickCount( &liTime);
7153
7154         if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7155         {
7156             //
7157             // First up are there dirty extents in the cache to flush?
7158             //
7159
7160             if( BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
7161                 BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7162             {
7163
7164                 //
7165                 // The file has been marked as invalid.  Dump it
7166                 //
7167
7168                 AFSTearDownFcbExtents( Fcb,
7169                                        NULL);
7170             }
7171             else if( ForceFlush ||
7172                      ( ( Fcb->Specific.File.ExtentsDirtyCount ||
7173                          Fcb->Specific.File.ExtentCount) &&
7174                        (liTime.QuadPart - Fcb->Specific.File.LastServerFlush.QuadPart)
7175                        >= pControlDeviceExt->Specific.Control.FcbFlushTimeCount.QuadPart))
7176             {
7177
7178                 if( !NT_SUCCESS( AFSFlushExtents( Fcb,
7179                                                   NULL)) &&
7180                     Fcb->OpenReferenceCount == 0)
7181                 {
7182
7183                     AFSReleaseExtentsWithFlush( Fcb,
7184                                                 NULL,
7185                                                 TRUE);
7186                 }
7187             }
7188         }
7189
7190         //
7191         // If there are extents and they haven't been used recently *and*
7192         // are not being used
7193         //
7194
7195         if( ( ForceFlush ||
7196               ( 0 != Fcb->Specific.File.ExtentCount &&
7197                 0 != Fcb->Specific.File.LastExtentAccess.QuadPart &&
7198                 (liTime.QuadPart - Fcb->Specific.File.LastExtentAccess.QuadPart) >=
7199                                         (AFS_SERVER_PURGE_SLEEP * pControlDeviceExt->Specific.Control.FcbPurgeTimeCount.QuadPart))))
7200         {
7201
7202             AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7203                           AFS_TRACE_LEVEL_VERBOSE,
7204                           "AFSCleanupFcb Acquiring Fcb lock %p EXCL %08lX\n",
7205                           &Fcb->NPFcb->Resource,
7206                           PsGetCurrentThread()));
7207
7208             if ( AFSAcquireExcl( &Fcb->NPFcb->Resource, ForceFlush) == FALSE)
7209             {
7210
7211                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7212                               AFS_TRACE_LEVEL_VERBOSE,
7213                               "AFSCleanupFcb Failed to Acquire Fcb lock %p EXCL %08lX\n",
7214                               &Fcb->NPFcb->Resource,
7215                               PsGetCurrentThread()));
7216
7217                 try_return( ntStatus = STATUS_RETRY);
7218             }
7219
7220             AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7221                           AFS_TRACE_LEVEL_VERBOSE,
7222                           "AFSCleanupFcb Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
7223                           &Fcb->NPFcb->SectionObjectResource,
7224                           PsGetCurrentThread()));
7225
7226             if ( AFSAcquireExcl( &Fcb->NPFcb->SectionObjectResource, ForceFlush))
7227             {
7228
7229                 __try
7230                 {
7231
7232                     CcFlushCache( &Fcb->NPFcb->SectionObjectPointers,
7233                                   NULL,
7234                                   0,
7235                                   &stIoStatus);
7236
7237                     if( !NT_SUCCESS( stIoStatus.Status))
7238                     {
7239
7240                         AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7241                                       AFS_TRACE_LEVEL_ERROR,
7242                                       "AFSCleanupFcb CcFlushCache [2] failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
7243                                       Fcb->ObjectInformation->FileId.Cell,
7244                                       Fcb->ObjectInformation->FileId.Volume,
7245                                       Fcb->ObjectInformation->FileId.Vnode,
7246                                       Fcb->ObjectInformation->FileId.Unique,
7247                                       stIoStatus.Status,
7248                                       stIoStatus.Information));
7249
7250                         ntStatus = stIoStatus.Status;
7251                     }
7252
7253                     if( ForceFlush &&
7254                         Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
7255                     {
7256
7257                         if ( !CcPurgeCacheSection( &Fcb->NPFcb->SectionObjectPointers,
7258                                                    NULL,
7259                                                    0,
7260                                                    FALSE))
7261                         {
7262
7263                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7264                                           AFS_TRACE_LEVEL_WARNING,
7265                                           "AFSCleanupFcb CcPurgeCacheSection [2] failure FID %08lX-%08lX-%08lX-%08lX\n",
7266                                           Fcb->ObjectInformation->FileId.Cell,
7267                                           Fcb->ObjectInformation->FileId.Volume,
7268                                           Fcb->ObjectInformation->FileId.Vnode,
7269                                           Fcb->ObjectInformation->FileId.Unique));
7270
7271                             SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7272                         }
7273                     }
7274                 }
7275                 __except( EXCEPTION_EXECUTE_HANDLER)
7276                 {
7277
7278                     ntStatus = GetExceptionCode();
7279
7280                     AFSDbgTrace(( 0,
7281                                   0,
7282                                   "EXCEPTION - AFSCleanupFcb Cc [2] FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
7283                                   Fcb->ObjectInformation->FileId.Cell,
7284                                   Fcb->ObjectInformation->FileId.Volume,
7285                                   Fcb->ObjectInformation->FileId.Vnode,
7286                                   Fcb->ObjectInformation->FileId.Unique,
7287                                   ntStatus));
7288                 }
7289
7290                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7291                               AFS_TRACE_LEVEL_VERBOSE,
7292                               "AFSCleanupFcb Releasing Fcb SectionObject lock %p EXCL %08lX\n",
7293                               &Fcb->NPFcb->SectionObjectResource,
7294                               PsGetCurrentThread()));
7295
7296                 AFSReleaseResource( &Fcb->NPFcb->SectionObjectResource);
7297
7298                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7299                               AFS_TRACE_LEVEL_VERBOSE,
7300                               "AFSCleanupFcb Releasing Fcb lock %p EXCL %08lX\n",
7301                               &Fcb->NPFcb->Resource,
7302                               PsGetCurrentThread()));
7303
7304                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7305
7306                 if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7307                 {
7308
7309                     if( Fcb->OpenReferenceCount <= 0)
7310                     {
7311
7312                         //
7313                         // Tear em down we'll not be needing them again
7314                         //
7315
7316                         AFSTearDownFcbExtents( Fcb,
7317                                                NULL);
7318                     }
7319                 }
7320             }
7321             else
7322             {
7323
7324                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7325                               AFS_TRACE_LEVEL_VERBOSE,
7326                               "AFSCleanupFcb Failed to Acquire Fcb SectionObject lock %p EXCL %08lX\n",
7327                               &Fcb->NPFcb->SectionObjectResource,
7328                               PsGetCurrentThread()));
7329
7330                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7331                               AFS_TRACE_LEVEL_VERBOSE,
7332                               "AFSCleanupFcb Releasing Fcb lock %p EXCL %08lX\n",
7333                               &Fcb->NPFcb->Resource,
7334                               PsGetCurrentThread()));
7335
7336                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7337
7338                 ntStatus = STATUS_RETRY;
7339             }
7340         }
7341
7342 try_exit:
7343
7344         NOTHING;
7345     }
7346
7347     return ntStatus;
7348 }
7349
7350 NTSTATUS
7351 AFSUpdateDirEntryName( IN AFSDirectoryCB *DirectoryCB,
7352                        IN UNICODE_STRING *NewFileName)
7353 {
7354
7355     NTSTATUS ntStatus = STATUS_SUCCESS;
7356     WCHAR *pTmpBuffer = NULL;
7357
7358     __Enter
7359     {
7360
7361         if( NewFileName->Length > DirectoryCB->NameInformation.FileName.Length)
7362         {
7363
7364             if( BooleanFlagOn( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER))
7365             {
7366
7367                 AFSExFreePoolWithTag( DirectoryCB->NameInformation.FileName.Buffer, 0);
7368
7369                 ClearFlag( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER);
7370
7371                 DirectoryCB->NameInformation.FileName.Buffer = NULL;
7372             }
7373
7374             //
7375             // OK, we need to allocate a new name buffer
7376             //
7377
7378             pTmpBuffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
7379                                                             NewFileName->Length,
7380                                                             AFS_NAME_BUFFER_NINE_TAG);
7381
7382             if( pTmpBuffer == NULL)
7383             {
7384
7385                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
7386             }
7387
7388             DirectoryCB->NameInformation.FileName.Buffer = pTmpBuffer;
7389
7390             DirectoryCB->NameInformation.FileName.MaximumLength = NewFileName->Length;
7391
7392             SetFlag( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER);
7393         }
7394
7395         DirectoryCB->NameInformation.FileName.Length = NewFileName->Length;
7396
7397         RtlCopyMemory( DirectoryCB->NameInformation.FileName.Buffer,
7398                        NewFileName->Buffer,
7399                        NewFileName->Length);
7400
7401 try_exit:
7402
7403         NOTHING;
7404     }
7405
7406     return ntStatus;
7407 }
7408
7409 NTSTATUS
7410 AFSReadCacheFile( IN void *ReadBuffer,
7411                   IN LARGE_INTEGER *ReadOffset,
7412                   IN ULONG RequestedDataLength,
7413                   IN OUT PULONG BytesRead)
7414 {
7415
7416     NTSTATUS            ntStatus = STATUS_SUCCESS;
7417     PIRP                pIrp = NULL;
7418     KEVENT              kEvent;
7419     PIO_STACK_LOCATION  pIoStackLocation = NULL;
7420     DEVICE_OBJECT      *pTargetDeviceObject = NULL;
7421     FILE_OBJECT        *pCacheFileObject = NULL;
7422
7423     __Enter
7424     {
7425
7426         pCacheFileObject = AFSReferenceCacheFileObject();
7427
7428         if( pCacheFileObject == NULL)
7429         {
7430             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
7431         }
7432
7433         pTargetDeviceObject = IoGetRelatedDeviceObject( pCacheFileObject);
7434
7435         //
7436         // Initialize the event
7437         //
7438
7439         KeInitializeEvent( &kEvent,
7440                            SynchronizationEvent,
7441                            FALSE);
7442
7443         //
7444         // Allocate an irp for this request.  This could also come from a
7445         // private pool, for instance.
7446         //
7447
7448         pIrp = IoAllocateIrp( pTargetDeviceObject->StackSize,
7449                               FALSE);
7450
7451         if( pIrp == NULL)
7452         {
7453
7454             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
7455         }
7456
7457         //
7458         // Build the IRP's main body
7459         //
7460
7461         pIrp->UserBuffer = ReadBuffer;
7462
7463         pIrp->Tail.Overlay.Thread = PsGetCurrentThread();
7464         pIrp->RequestorMode = KernelMode;
7465         pIrp->Flags |= IRP_READ_OPERATION;
7466
7467         //
7468         // Set up the I/O stack location.
7469         //
7470
7471         pIoStackLocation = IoGetNextIrpStackLocation( pIrp);
7472         pIoStackLocation->MajorFunction = IRP_MJ_READ;
7473         pIoStackLocation->DeviceObject = pTargetDeviceObject;
7474         pIoStackLocation->FileObject = pCacheFileObject;
7475         pIoStackLocation->Parameters.Read.Length = RequestedDataLength;
7476
7477         pIoStackLocation->Parameters.Read.ByteOffset.QuadPart = ReadOffset->QuadPart;
7478
7479         //
7480         // Set the completion routine.
7481         //
7482
7483         IoSetCompletionRoutine( pIrp,
7484                                 AFSIrpComplete,
7485                                 &kEvent,
7486                                 TRUE,
7487                                 TRUE,
7488                                 TRUE);
7489
7490         //
7491         // Send it to the FSD
7492         //
7493
7494         ntStatus = IoCallDriver( pTargetDeviceObject,
7495                                  pIrp);
7496
7497         if( NT_SUCCESS( ntStatus))
7498         {
7499
7500             //
7501             // Wait for the I/O
7502             //
7503
7504             ntStatus = KeWaitForSingleObject( &kEvent,
7505                                               Executive,
7506                                               KernelMode,
7507                                               FALSE,
7508                                               0);
7509
7510             if( NT_SUCCESS( ntStatus))
7511             {
7512
7513                 ntStatus = pIrp->IoStatus.Status;
7514
7515                 *BytesRead = (ULONG)pIrp->IoStatus.Information;
7516             }
7517         }
7518
7519 try_exit:
7520
7521         if( pCacheFileObject != NULL)
7522         {
7523             AFSReleaseCacheFileObject( pCacheFileObject);
7524         }
7525
7526         if( pIrp != NULL)
7527         {
7528
7529             if( pIrp->MdlAddress != NULL)
7530             {
7531
7532                 if( FlagOn( pIrp->MdlAddress->MdlFlags, MDL_PAGES_LOCKED))
7533                 {
7534
7535                     MmUnlockPages( pIrp->MdlAddress);
7536                 }
7537
7538                 IoFreeMdl( pIrp->MdlAddress);
7539             }
7540
7541             pIrp->MdlAddress = NULL;
7542
7543             //
7544             // Free the Irp
7545             //
7546
7547             IoFreeIrp( pIrp);
7548         }
7549     }
7550
7551     return ntStatus;
7552 }
7553
7554 NTSTATUS
7555 AFSIrpComplete( IN PDEVICE_OBJECT DeviceObject,
7556                 IN PIRP           Irp,
7557                 IN PVOID          Context)
7558 {
7559
7560     UNREFERENCED_PARAMETER(Irp);
7561     UNREFERENCED_PARAMETER(DeviceObject);
7562     KEVENT *pEvent = (KEVENT *)Context;
7563
7564     KeSetEvent( pEvent,
7565                 0,
7566                 FALSE);
7567
7568     return STATUS_MORE_PROCESSING_REQUIRED;
7569 }
7570
7571 BOOLEAN
7572 AFSIsDirectoryEmptyForDelete( IN AFSFcb *Fcb)
7573 {
7574
7575     BOOLEAN bIsEmpty = FALSE;
7576     AFSDirectoryCB *pDirEntry = NULL;
7577
7578     __Enter
7579     {
7580
7581         ASSERT( Fcb->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY);
7582
7583         AFSAcquireShared( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
7584                           TRUE);
7585
7586         bIsEmpty = TRUE;
7587
7588         if( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL)
7589         {
7590
7591             pDirEntry = Fcb->ObjectInformation->Specific.Directory.DirectoryNodeListHead;
7592
7593             while( pDirEntry != NULL)
7594             {
7595
7596                 if( !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_FAKE) &&
7597                     !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED))
7598                 {
7599
7600                     bIsEmpty = FALSE;
7601
7602                     break;
7603                 }
7604
7605                 pDirEntry = (AFSDirectoryCB *)pDirEntry->ListEntry.fLink;
7606             }
7607
7608         }
7609
7610         AFSReleaseResource( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
7611     }
7612
7613     return bIsEmpty;
7614 }
7615
7616 void
7617 AFSRemoveNameEntry( IN AFSObjectInfoCB *ParentObjectInfo,
7618                     IN AFSDirectoryCB *DirEntry)
7619 {
7620
7621     NTSTATUS ntStatus = STATUS_SUCCESS;
7622
7623     __Enter
7624     {
7625
7626         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
7627         {
7628
7629             AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7630                           AFS_TRACE_LEVEL_VERBOSE,
7631                           "AFSRemoveNameEntry DE %p for %wZ has NOT_IN flag set\n",
7632                           DirEntry,
7633                           &DirEntry->NameInformation.FileName));
7634
7635             try_return( ntStatus);
7636         }
7637
7638         ASSERT( ExIsResourceAcquiredExclusiveLite( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock));
7639
7640         //
7641         // Remove the entry from the parent tree
7642         //
7643
7644         AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7645                       AFS_TRACE_LEVEL_VERBOSE,
7646                       "AFSRemoveNameEntry DE %p for %wZ removing from case sensitive tree\n",
7647                       DirEntry,
7648                       &DirEntry->NameInformation.FileName));
7649
7650         AFSRemoveCaseSensitiveDirEntry( &ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
7651                                         DirEntry);
7652
7653         AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7654                       AFS_TRACE_LEVEL_VERBOSE,
7655                       "AFSRemoveNameEntry DE %p for %wZ removing from case insensitive tree\n",
7656                       DirEntry,
7657                       &DirEntry->NameInformation.FileName));
7658
7659         AFSRemoveCaseInsensitiveDirEntry( &ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
7660                                           DirEntry);
7661
7662         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME))
7663         {
7664
7665             //
7666             // From the short name tree
7667             //
7668
7669             AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7670                           AFS_TRACE_LEVEL_VERBOSE,
7671                           "AFSRemoveNameEntry DE %p for %wZ removing from shortname tree\n",
7672                           DirEntry,
7673                           &DirEntry->NameInformation.FileName));
7674
7675             AFSRemoveShortNameDirEntry( &ParentObjectInfo->Specific.Directory.ShortNameTree,
7676                                         DirEntry);
7677
7678             ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
7679         }
7680
7681         AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7682                       AFS_TRACE_LEVEL_VERBOSE,
7683                       "AFSRemoveNameEntry DE %p for %wZ setting NOT_IN flag\n",
7684                       DirEntry,
7685                       &DirEntry->NameInformation.FileName));
7686
7687         SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
7688
7689         ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
7690
7691 try_exit:
7692
7693         NOTHING;
7694     }
7695
7696     return;
7697 }
7698
7699 LARGE_INTEGER
7700 AFSGetAuthenticationId()
7701 {
7702
7703     LARGE_INTEGER liAuthId = {0,0};
7704     NTSTATUS ntStatus = STATUS_SUCCESS;
7705     PACCESS_TOKEN hToken = NULL;
7706     PTOKEN_STATISTICS pTokenInfo = NULL;
7707     BOOLEAN bCopyOnOpen = FALSE;
7708     BOOLEAN bEffectiveOnly = FALSE;
7709     BOOLEAN bPrimaryToken = FALSE;
7710     SECURITY_IMPERSONATION_LEVEL stImpersonationLevel;
7711
7712     __Enter
7713     {
7714
7715         hToken = PsReferenceImpersonationToken( PsGetCurrentThread(),
7716                                                 &bCopyOnOpen,
7717                                                 &bEffectiveOnly,
7718                                                 &stImpersonationLevel);
7719
7720         if( hToken == NULL)
7721         {
7722
7723             hToken = PsReferencePrimaryToken( PsGetCurrentProcess());
7724
7725             if( hToken == NULL)
7726             {
7727
7728                 AFSDbgTrace(( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7729                               AFS_TRACE_LEVEL_ERROR,
7730                               "AFSGetAuthenticationId Failed to retrieve impersonation or primary token\n"));
7731
7732                 try_return( ntStatus);
7733             }
7734
7735             bPrimaryToken = TRUE;
7736         }
7737
7738         ntStatus = SeQueryInformationToken( hToken,
7739                                             TokenStatistics,
7740                                             (PVOID *)&pTokenInfo);
7741
7742         if( !NT_SUCCESS( ntStatus))
7743         {
7744
7745             AFSDbgTrace(( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7746                           AFS_TRACE_LEVEL_ERROR,
7747                           "AFSGetAuthenticationId Failed to retrieve information Status %08lX\n",
7748                           ntStatus));
7749
7750             try_return( ntStatus);
7751         }
7752
7753         liAuthId.HighPart = pTokenInfo->AuthenticationId.HighPart;
7754         liAuthId.LowPart = pTokenInfo->AuthenticationId.LowPart;
7755
7756         AFSDbgTrace(( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7757                       AFS_TRACE_LEVEL_VERBOSE,
7758                       "AFSGetAuthenticationId Successfully retrieved authentication ID %I64X\n",
7759                       liAuthId.QuadPart));
7760
7761 try_exit:
7762
7763         if( hToken != NULL)
7764         {
7765
7766             if( !bPrimaryToken)
7767             {
7768
7769                 PsDereferenceImpersonationToken( hToken);
7770             }
7771             else
7772             {
7773
7774                 PsDereferencePrimaryToken( hToken);
7775             }
7776         }
7777
7778         if( pTokenInfo != NULL)
7779         {
7780
7781             ExFreePool( pTokenInfo);    // Allocated by SeQueryInformationToken
7782         }
7783     }
7784
7785     return liAuthId;
7786 }
7787
7788 void
7789 AFSUnwindFileInfo( IN AFSFcb *Fcb,
7790                    IN AFSCcb *Ccb)
7791 {
7792
7793     UNREFERENCED_PARAMETER(Fcb);
7794     if( Ccb->FileUnwindInfo.FileAttributes != (ULONG)-1)
7795     {
7796         Fcb->ObjectInformation->FileAttributes = Ccb->FileUnwindInfo.FileAttributes;
7797     }
7798
7799     if( Ccb->FileUnwindInfo.CreationTime.QuadPart != (ULONGLONG)-1)
7800     {
7801         Fcb->ObjectInformation->CreationTime.QuadPart = Ccb->FileUnwindInfo.CreationTime.QuadPart;
7802     }
7803
7804     if( Ccb->FileUnwindInfo.LastAccessTime.QuadPart != (ULONGLONG)-1)
7805     {
7806         Fcb->ObjectInformation->LastAccessTime.QuadPart = Ccb->FileUnwindInfo.LastAccessTime.QuadPart;
7807     }
7808
7809     if( Ccb->FileUnwindInfo.LastWriteTime.QuadPart != (ULONGLONG)-1)
7810     {
7811         Fcb->ObjectInformation->LastWriteTime.QuadPart = Ccb->FileUnwindInfo.LastWriteTime.QuadPart;
7812     }
7813
7814     if( Ccb->FileUnwindInfo.ChangeTime.QuadPart != (ULONGLONG)-1)
7815     {
7816         Fcb->ObjectInformation->ChangeTime.QuadPart = Ccb->FileUnwindInfo.ChangeTime.QuadPart;
7817     }
7818
7819     return;
7820 }
7821
7822 BOOLEAN
7823 AFSValidateDirList( IN AFSObjectInfoCB *ObjectInfo)
7824 {
7825
7826     BOOLEAN bIsValid = TRUE;
7827     ULONG ulCount = 0;
7828     AFSDirectoryCB *pCurrentDirEntry = NULL, *pDirEntry = NULL;
7829
7830     pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
7831
7832     while( pCurrentDirEntry != NULL)
7833     {
7834
7835         if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_FAKE))
7836         {
7837             ulCount++;
7838
7839             if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
7840             {
7841
7842                 pDirEntry = NULL;
7843
7844                 AFSLocateCaseSensitiveDirEntry( ObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
7845                                                 (ULONG)pCurrentDirEntry->CaseSensitiveTreeEntry.HashIndex,
7846                                                 &pDirEntry);
7847
7848                 if( pDirEntry == NULL)
7849                 {
7850                     DbgBreakPoint();
7851                 }
7852             }
7853         }
7854
7855         pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
7856     }
7857
7858     if( ulCount != (ULONG) ObjectInfo->Specific.Directory.DirectoryNodeCount)
7859     {
7860
7861         AFSPrint("AFSValidateDirList Count off Calc: %d Stored: %d\n",
7862                   ulCount,
7863                   ObjectInfo->Specific.Directory.DirectoryNodeCount);
7864
7865         ObjectInfo->Specific.Directory.DirectoryNodeCount = ulCount;
7866
7867         bIsValid = FALSE;
7868     }
7869
7870     return bIsValid;
7871 }
7872
7873 PFILE_OBJECT
7874 AFSReferenceCacheFileObject()
7875 {
7876
7877     AFSDeviceExt       *pRdrDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
7878     FILE_OBJECT        *pCacheFileObject = NULL;
7879
7880     AFSAcquireShared( &pRdrDevExt->Specific.RDR.CacheFileLock,
7881                       TRUE);
7882
7883     pCacheFileObject = pRdrDevExt->Specific.RDR.CacheFileObject;
7884
7885     if( pCacheFileObject != NULL)
7886     {
7887         ObReferenceObject( pCacheFileObject);
7888     }
7889
7890     AFSReleaseResource( &pRdrDevExt->Specific.RDR.CacheFileLock);
7891
7892     return pCacheFileObject;
7893 }
7894
7895 void
7896 AFSReleaseCacheFileObject( IN PFILE_OBJECT CacheFileObject)
7897 {
7898
7899     ASSERT( CacheFileObject != NULL);
7900
7901     ObDereferenceObject( CacheFileObject);
7902
7903     return;
7904 }
7905
7906 NTSTATUS
7907 AFSInitializeLibrary( IN AFSLibraryInitCB *LibraryInit)
7908 {
7909
7910     NTSTATUS ntStatus = STATUS_SUCCESS;
7911     AFSDeviceExt *pControlDevExt = NULL;
7912     ULONG ulTimeIncrement = 0;
7913     LONG lCount;
7914
7915     __Enter
7916     {
7917
7918         AFSControlDeviceObject = LibraryInit->AFSControlDeviceObject;
7919
7920         AFSRDRDeviceObject = LibraryInit->AFSRDRDeviceObject;
7921
7922         AFSServerName = LibraryInit->AFSServerName;
7923
7924         AFSMountRootName = LibraryInit->AFSMountRootName;
7925
7926         AFSDebugFlags = LibraryInit->AFSDebugFlags;
7927
7928         //
7929         // Callbacks in the framework
7930         //
7931
7932         AFSProcessRequest = LibraryInit->AFSProcessRequest;
7933
7934         AFSDbgLogMsg = LibraryInit->AFSDbgLogMsg;
7935
7936         AFSDebugTraceFnc = AFSDbgLogMsg;
7937
7938         AFSAddConnectionEx = LibraryInit->AFSAddConnectionEx;
7939
7940         AFSExAllocatePoolWithTag = LibraryInit->AFSExAllocatePoolWithTag;
7941
7942         AFSExFreePoolWithTag = LibraryInit->AFSExFreePoolWithTag;
7943
7944         AFSDumpTraceFilesFnc = LibraryInit->AFSDumpTraceFiles;
7945
7946         AFSRetrieveAuthGroupFnc = LibraryInit->AFSRetrieveAuthGroup;
7947
7948         AFSLibCacheManagerCallbacks = LibraryInit->AFSCacheManagerCallbacks;
7949
7950         if( LibraryInit->AFSCacheBaseAddress != NULL)
7951         {
7952
7953             SetFlag( AFSLibControlFlags, AFS_REDIR_LIB_FLAGS_NONPERSISTENT_CACHE);
7954
7955             AFSLibCacheBaseAddress = LibraryInit->AFSCacheBaseAddress;
7956
7957             AFSLibCacheLength = LibraryInit->AFSCacheLength;
7958         }
7959
7960         //
7961         // Initialize some flush parameters
7962         //
7963
7964         pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
7965
7966         ulTimeIncrement = KeQueryTimeIncrement();
7967
7968         pControlDevExt->Specific.Control.ObjectLifeTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_OBJECT_LIFETIME / (ULONGLONG)ulTimeIncrement);
7969         pControlDevExt->Specific.Control.FcbPurgeTimeCount.QuadPart = AFS_SERVER_PURGE_DELAY;
7970         pControlDevExt->Specific.Control.FcbPurgeTimeCount.QuadPart /= ulTimeIncrement;
7971         pControlDevExt->Specific.Control.FcbFlushTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_SERVER_FLUSH_DELAY / (ULONGLONG)ulTimeIncrement);
7972         pControlDevExt->Specific.Control.ExtentRequestTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_EXTENT_REQUEST_TIME/(ULONGLONG)ulTimeIncrement);
7973
7974         //
7975         // Initialize the global root entry
7976         //
7977
7978         ntStatus = AFSInitVolume( NULL,
7979                                   &LibraryInit->GlobalRootFid,
7980                                   AFS_VOLUME_REFERENCE_GLOBAL_ROOT,
7981                                   &AFSGlobalRoot);
7982
7983         if( !NT_SUCCESS( ntStatus))
7984         {
7985
7986             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
7987                           AFS_TRACE_LEVEL_ERROR,
7988                           "AFSInitializeLibrary AFSInitVolume failure %08lX\n",
7989                           ntStatus));
7990
7991             try_return( ntStatus);
7992         }
7993
7994         ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
7995                                    AFSGlobalRoot);
7996
7997         if( !NT_SUCCESS( ntStatus))
7998         {
7999
8000             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
8001                           AFS_TRACE_LEVEL_ERROR,
8002                           "AFSInitializeLibrary AFSInitRootFcb failure %08lX\n",
8003                           ntStatus));
8004
8005             lCount = AFSVolumeDecrement( AFSGlobalRoot,
8006                                          AFS_VOLUME_REFERENCE_GLOBAL_ROOT);
8007
8008             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8009                           AFS_TRACE_LEVEL_VERBOSE,
8010                           "AFSInitializeLibrary Decrement count on volume %p Cnt %d\n",
8011                           AFSGlobalRoot,
8012                           lCount));
8013
8014             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
8015
8016             try_return( ntStatus);
8017         }
8018
8019         //
8020         // Update the node type code to AFS_ROOT_ALL
8021         //
8022
8023         AFSGlobalRoot->ObjectInformation.Fcb->Header.NodeTypeCode = AFS_ROOT_ALL;
8024
8025         SetFlag( AFSGlobalRoot->Flags, AFS_VOLUME_ACTIVE_GLOBAL_ROOT);
8026
8027         //
8028         // Invalidate all known volumes since contact with the service and therefore
8029         // the file server was lost.
8030         //
8031
8032         AFSInvalidateAllVolumes();
8033
8034         //
8035         // Drop the locks acquired above
8036         //
8037
8038         AFSInitVolumeWorker( AFSGlobalRoot);
8039
8040         lCount = AFSVolumeDecrement( AFSGlobalRoot,
8041                                      AFS_VOLUME_REFERENCE_GLOBAL_ROOT);
8042
8043         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8044                       AFS_TRACE_LEVEL_VERBOSE,
8045                       "AFSInitializeLibrary Decrement count on volume %p Cnt %d\n",
8046                       AFSGlobalRoot,
8047                       lCount));
8048
8049         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
8050
8051         AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Fcb->Header.Resource);
8052
8053 try_exit:
8054
8055         NOTHING;
8056     }
8057
8058     return ntStatus;
8059 }
8060
8061 NTSTATUS
8062 AFSCloseLibrary()
8063 {
8064
8065     NTSTATUS ntStatus = STATUS_SUCCESS;
8066     AFSDirectoryCB *pDirNode = NULL, *pLastDirNode = NULL;
8067     LONG lCount;
8068
8069     __Enter
8070     {
8071
8072         if( AFSGlobalDotDirEntry != NULL)
8073         {
8074
8075             lCount = AFSObjectInfoDecrement( AFSGlobalDotDirEntry->ObjectInformation,
8076                                              AFS_OBJECT_REFERENCE_GLOBAL);
8077
8078             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8079                           AFS_TRACE_LEVEL_VERBOSE,
8080                           "AFSCloseLibrary Decrement count on parent object %p Cnt %d\n",
8081                           AFSGlobalDotDirEntry->ObjectInformation,
8082                           lCount));
8083
8084             if ( lCount == 0)
8085             {
8086
8087                 AFSDeleteObjectInfo( &AFSGlobalDotDirEntry->ObjectInformation);
8088             }
8089
8090             ExDeleteResourceLite( &AFSGlobalDotDirEntry->NonPaged->Lock);
8091
8092             AFSLibExFreePoolWithTag( AFSGlobalDotDirEntry->NonPaged,
8093                                      AFS_DIR_ENTRY_NP_TAG);
8094
8095             AFSLibExFreePoolWithTag( AFSGlobalDotDirEntry,
8096                                      AFS_DIR_ENTRY_TAG);
8097
8098             AFSGlobalDotDirEntry = NULL;
8099         }
8100
8101         if( AFSGlobalDotDotDirEntry != NULL)
8102         {
8103
8104             lCount = AFSObjectInfoDecrement( AFSGlobalDotDotDirEntry->ObjectInformation,
8105                                              AFS_OBJECT_REFERENCE_GLOBAL);
8106
8107             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8108                           AFS_TRACE_LEVEL_VERBOSE,
8109                           "AFSCloseLibrary Decrement count on parent object %p Cnt %d\n",
8110                           AFSGlobalDotDotDirEntry->ObjectInformation,
8111                           lCount));
8112
8113             if ( lCount == 0)
8114             {
8115
8116                 AFSDeleteObjectInfo( &AFSGlobalDotDotDirEntry->ObjectInformation);
8117             }
8118
8119             ExDeleteResourceLite( &AFSGlobalDotDotDirEntry->NonPaged->Lock);
8120
8121             AFSLibExFreePoolWithTag( AFSGlobalDotDotDirEntry->NonPaged,
8122                                   AFS_DIR_ENTRY_NP_TAG);
8123
8124             AFSLibExFreePoolWithTag( AFSGlobalDotDotDirEntry,
8125                                   AFS_DIR_ENTRY_TAG);
8126
8127             AFSGlobalDotDotDirEntry = NULL;
8128         }
8129
8130         if( AFSSpecialShareNames != NULL)
8131         {
8132
8133             pDirNode = AFSSpecialShareNames;
8134
8135             while( pDirNode != NULL)
8136             {
8137
8138                 pLastDirNode = (AFSDirectoryCB *)pDirNode->ListEntry.fLink;
8139
8140                 lCount = AFSObjectInfoDecrement( pDirNode->ObjectInformation,
8141                                                  AFS_OBJECT_REFERENCE_GLOBAL);
8142
8143                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8144                               AFS_TRACE_LEVEL_VERBOSE,
8145                               "AFSCloseLibrary Decrement count on parent object %p Cnt %d\n",
8146                               pDirNode->ObjectInformation,
8147                               lCount));
8148
8149                 if ( lCount == 0)
8150                 {
8151
8152                     AFSDeleteObjectInfo( &pDirNode->ObjectInformation);
8153                 }
8154
8155                 ExDeleteResourceLite( &pDirNode->NonPaged->Lock);
8156
8157                 AFSLibExFreePoolWithTag( pDirNode->NonPaged,
8158                                          AFS_DIR_ENTRY_NP_TAG);
8159
8160                 AFSLibExFreePoolWithTag( pDirNode,
8161                                          AFS_DIR_ENTRY_TAG);
8162
8163                 pDirNode = pLastDirNode;
8164             }
8165
8166             AFSSpecialShareNames = NULL;
8167         }
8168     }
8169
8170     return ntStatus;
8171 }
8172
8173 NTSTATUS
8174 AFSDefaultLogMsg( IN ULONG Subsystem,
8175                   IN ULONG Level,
8176                   IN PCCH Format,
8177                   ...)
8178 {
8179
8180     UNREFERENCED_PARAMETER(Subsystem);
8181     UNREFERENCED_PARAMETER(Level);
8182     NTSTATUS ntStatus = STATUS_SUCCESS;
8183     va_list va_args;
8184     char chDebugBuffer[ 256];
8185
8186     __Enter
8187     {
8188
8189         va_start( va_args, Format);
8190
8191         ntStatus = RtlStringCbVPrintfA( chDebugBuffer,
8192                                         256,
8193                                         Format,
8194                                         va_args);
8195
8196         if( NT_SUCCESS( ntStatus))
8197         {
8198             DbgPrint( chDebugBuffer);
8199         }
8200
8201         va_end( va_args);
8202     }
8203
8204     return ntStatus;
8205 }
8206
8207 NTSTATUS
8208 AFSGetObjectStatus( IN AFSGetStatusInfoCB *GetStatusInfo,
8209                     IN ULONG InputBufferLength,
8210                     IN AFSStatusInfoCB *StatusInfo,
8211                     OUT ULONG *ReturnLength)
8212 {
8213
8214     NTSTATUS ntStatus = STATUS_SUCCESS;
8215     AFSVolumeCB *pVolumeCB = NULL;
8216     LONG VolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
8217     AFSVolumeCB *pNewVolumeCB = NULL;
8218     LONG NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
8219     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
8220     AFSObjectInfoCB *pObjectInfo = NULL;
8221     ULONGLONG   ullIndex = 0;
8222     UNICODE_STRING uniFullPathName, uniRemainingPath, uniComponentName, uniParsedName;
8223     AFSNameArrayHdr *pNameArray = NULL;
8224     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
8225     AFSDirectoryCB *pNewParentDirEntry = NULL;
8226     LONG lCount;
8227
8228     __Enter
8229     {
8230
8231         //
8232         // If we are given a FID then look up the entry by that, otherwise
8233         // do it by name
8234         //
8235
8236         if( GetStatusInfo->FileID.Cell != 0 &&
8237             GetStatusInfo->FileID.Volume != 0 &&
8238             GetStatusInfo->FileID.Vnode != 0 &&
8239             GetStatusInfo->FileID.Unique != 0)
8240         {
8241
8242             AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
8243
8244             //
8245             // Locate the volume node
8246             //
8247
8248             ullIndex = AFSCreateHighIndex( &GetStatusInfo->FileID);
8249
8250             ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
8251                                            ullIndex,
8252                                            (AFSBTreeEntry **)&pVolumeCB);
8253
8254             if( pVolumeCB != NULL)
8255             {
8256
8257                 VolumeReferenceReason = AFS_VOLUME_REFERENCE_GET_OBJECT;
8258
8259                 lCount = AFSVolumeIncrement( pVolumeCB,
8260                                              VolumeReferenceReason);
8261
8262                 AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8263                               AFS_TRACE_LEVEL_VERBOSE,
8264                               "AFSGetObjectStatus Increment count on volume %p Reason %u Cnt %d\n",
8265                               pVolumeCB,
8266                               VolumeReferenceReason,
8267                               lCount));
8268             }
8269
8270             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
8271
8272             if( !NT_SUCCESS( ntStatus) ||
8273                 pVolumeCB == NULL)
8274             {
8275                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
8276             }
8277
8278             if( AFSIsVolumeFID( &GetStatusInfo->FileID))
8279             {
8280
8281                 pObjectInfo = &pVolumeCB->ObjectInformation;
8282
8283                 AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
8284                                   TRUE);
8285
8286                 lCount = AFSObjectInfoIncrement( pObjectInfo,
8287                                                  AFS_OBJECT_REFERENCE_STATUS);
8288
8289                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8290                               AFS_TRACE_LEVEL_VERBOSE,
8291                               "AFSGetObjectStatus Increment1 count on object %p Cnt %d\n",
8292                               pObjectInfo,
8293                               lCount));
8294
8295                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8296             }
8297             else
8298             {
8299
8300                 AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
8301                                 TRUE);
8302
8303                 ullIndex = AFSCreateLowIndex( &GetStatusInfo->FileID);
8304
8305                 ntStatus = AFSLocateHashEntry( pVolumeCB->ObjectInfoTree.TreeHead,
8306                                                ullIndex,
8307                                                (AFSBTreeEntry **)&pObjectInfo);
8308
8309                 if( pObjectInfo != NULL)
8310                 {
8311
8312                     //
8313                     // Reference the node so it won't be torn down
8314                     //
8315
8316                     lCount = AFSObjectInfoIncrement( pObjectInfo,
8317                                                      AFS_OBJECT_REFERENCE_STATUS);
8318
8319                     AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8320                                   AFS_TRACE_LEVEL_VERBOSE,
8321                                   "AFSGetObjectStatus Increment2 count on object %p Cnt %d\n",
8322                                   pObjectInfo,
8323                                   lCount));
8324
8325                     KeQueryTickCount( &pObjectInfo->LastAccessCount);
8326                 }
8327
8328                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8329
8330                 if( !NT_SUCCESS( ntStatus) ||
8331                     pObjectInfo == NULL)
8332                 {
8333                     try_return( ntStatus = STATUS_INVALID_PARAMETER);
8334                 }
8335             }
8336         }
8337         else
8338         {
8339
8340             if( GetStatusInfo->FileNameLength == 0 ||
8341                 InputBufferLength < (ULONG)(FIELD_OFFSET( AFSGetStatusInfoCB, FileName) + GetStatusInfo->FileNameLength))
8342             {
8343                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
8344             }
8345
8346             uniFullPathName.Length = GetStatusInfo->FileNameLength;
8347             uniFullPathName.MaximumLength = uniFullPathName.Length;
8348
8349             uniFullPathName.Buffer = (WCHAR *)GetStatusInfo->FileName;
8350
8351             //
8352             // This name should begin with the \afs server so parse it off and check it
8353             //
8354
8355             FsRtlDissectName( uniFullPathName,
8356                               &uniComponentName,
8357                               &uniRemainingPath);
8358
8359             if( RtlCompareUnicodeString( &uniComponentName,
8360                                          &AFSServerName,
8361                                          TRUE) != 0)
8362             {
8363                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8364                               AFS_TRACE_LEVEL_ERROR,
8365                               "AFSGetObjectStatus Name %wZ contains invalid server name\n",
8366                               &uniFullPathName));
8367
8368                 try_return( ntStatus = STATUS_OBJECT_PATH_INVALID);
8369             }
8370
8371             uniFullPathName = uniRemainingPath;
8372
8373             uniParsedName = uniFullPathName;
8374
8375             //
8376             // Our name array
8377             //
8378
8379             pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
8380                                            0);
8381
8382             if( pNameArray == NULL)
8383             {
8384                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8385             }
8386
8387             pVolumeCB = AFSGlobalRoot;
8388
8389             pParentDirEntry = AFSGlobalRoot->DirectoryCB;
8390
8391             //
8392             // Increment the ref count on the volume and dir entry for correct processing below
8393             //
8394
8395             VolumeReferenceReason = AFS_VOLUME_REFERENCE_GET_OBJECT;
8396
8397             lCount = AFSVolumeIncrement( pVolumeCB,
8398                                          VolumeReferenceReason);
8399
8400             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8401                           AFS_TRACE_LEVEL_VERBOSE,
8402                           "AFSGetObjectStatus Increment2 count on volume %p Reason %u Cnt %d\n",
8403                           pVolumeCB,
8404                           VolumeReferenceReason,
8405                           lCount));
8406
8407             lCount = InterlockedIncrement( &pParentDirEntry->DirOpenReferenceCount);
8408
8409             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8410                           AFS_TRACE_LEVEL_VERBOSE,
8411                           "AFSGetObjectStatus Increment count on %wZ DE %p Ccb %p Cnt %d\n",
8412                           &pParentDirEntry->NameInformation.FileName,
8413                           pParentDirEntry,
8414                           NULL,
8415                           lCount));
8416
8417             ntStatus = AFSLocateNameEntry( NULL,
8418                                            NULL,
8419                                            &uniFullPathName,
8420                                            &uniParsedName,
8421                                            pNameArray,
8422                                            AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL |
8423                                                AFS_LOCATE_FLAGS_NO_SL_TARGET_EVAL,
8424                                            pVolumeCB,
8425                                            pParentDirEntry,
8426                                            &pNewVolumeCB,
8427                                            &NewVolumeReferenceReason,
8428                                            &pNewParentDirEntry,
8429                                            &pDirectoryEntry,
8430                                            NULL,
8431                                            NULL);
8432
8433             if ( pNewVolumeCB != NULL)
8434             {
8435
8436                 //
8437                 // AFSLocateNameEntry returns pNewVolumeCB with a reference held
8438                 // even if pVolumeCB == pNewVolumeCB.  It is always safe to release
8439                 // the reference on pVolumeCB that was held prior to the call.
8440                 // If pVolumeCB == pNewVolumeCB, the reference from AFSLocateNameEntry
8441                 // will be released second.
8442                 //
8443
8444                 lCount = AFSVolumeDecrement( pVolumeCB,
8445                                              VolumeReferenceReason);
8446
8447                 AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8448                               AFS_TRACE_LEVEL_VERBOSE,
8449                               "AFSGetObjectStatus Decrement count on volume %p Reason %u Cnt %d\n",
8450                               pVolumeCB,
8451                               VolumeReferenceReason,
8452                               lCount));
8453
8454                 pVolumeCB = pNewVolumeCB;
8455
8456                 pNewVolumeCB = NULL;
8457
8458                 VolumeReferenceReason = NewVolumeReferenceReason;
8459
8460                 NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
8461             }
8462
8463             //
8464             // AFSLocateNameEntry does not alter the reference count of
8465             // pParentDirectoryCB and it returns pNewParentDirectoryCB with
8466             // a reference held.
8467             //
8468
8469             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
8470
8471             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8472                           AFS_TRACE_LEVEL_VERBOSE,
8473                           "AFSGetObjectStatus DecrementX count on %wZ DE %p Cnt %d\n",
8474                           &pParentDirEntry->NameInformation.FileName,
8475                           pParentDirEntry,
8476                           lCount));
8477
8478             pParentDirEntry = pNewParentDirEntry;
8479
8480             pNewParentDirEntry = NULL;
8481
8482             if( !NT_SUCCESS( ntStatus) ||
8483                 ntStatus == STATUS_REPARSE)
8484             {
8485
8486                 pVolumeCB = NULL;
8487
8488                 try_return( ntStatus);
8489             }
8490
8491             pObjectInfo = pDirectoryEntry->ObjectInformation;
8492
8493             AFSAcquireExcl( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
8494                             TRUE);
8495
8496             lCount = AFSObjectInfoIncrement( pObjectInfo,
8497                                              AFS_OBJECT_REFERENCE_STATUS);
8498
8499             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8500                           AFS_TRACE_LEVEL_VERBOSE,
8501                           "AFSGetObjectStatus Increment3 count on object %p Cnt %d\n",
8502                           pObjectInfo,
8503                           lCount));
8504
8505             AFSReleaseResource( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
8506         }
8507
8508         //
8509         // At this point we have an object info block, return the information
8510         //
8511
8512         StatusInfo->FileId = pObjectInfo->FileId;
8513
8514         StatusInfo->TargetFileId = pObjectInfo->TargetFileId;
8515
8516         StatusInfo->Expiration = pObjectInfo->Expiration;
8517
8518         StatusInfo->DataVersion = pObjectInfo->DataVersion;
8519
8520         StatusInfo->FileType = pObjectInfo->FileType;
8521
8522         StatusInfo->ObjectFlags = pObjectInfo->Flags;
8523
8524         StatusInfo->CreationTime = pObjectInfo->CreationTime;
8525
8526         StatusInfo->LastAccessTime = pObjectInfo->LastAccessTime;
8527
8528         StatusInfo->LastWriteTime = pObjectInfo->LastWriteTime;
8529
8530         StatusInfo->ChangeTime = pObjectInfo->ChangeTime;
8531
8532         StatusInfo->FileAttributes = pObjectInfo->FileAttributes;
8533
8534         StatusInfo->EndOfFile = pObjectInfo->EndOfFile;
8535
8536         StatusInfo->AllocationSize = pObjectInfo->AllocationSize;
8537
8538         StatusInfo->EaSize = pObjectInfo->EaSize;
8539
8540         StatusInfo->Links = pObjectInfo->Links;
8541
8542         //
8543         // Return the information length
8544         //
8545
8546         *ReturnLength = sizeof( AFSStatusInfoCB);
8547
8548 try_exit:
8549
8550         if( pDirectoryEntry != NULL)
8551         {
8552
8553             lCount = InterlockedDecrement( &pDirectoryEntry->DirOpenReferenceCount);
8554
8555             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8556                           AFS_TRACE_LEVEL_VERBOSE,
8557                           "AFSGetObjectStatus Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
8558                           &pDirectoryEntry->NameInformation.FileName,
8559                           pDirectoryEntry,
8560                           NULL,
8561                           lCount));
8562
8563             ASSERT( lCount >= 0);
8564         }
8565
8566         if ( pParentDirEntry != NULL)
8567         {
8568
8569             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
8570
8571             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8572                           AFS_TRACE_LEVEL_VERBOSE,
8573                           "AFSGetObjectStatus Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
8574                           &pParentDirEntry->NameInformation.FileName,
8575                           pParentDirEntry,
8576                           NULL,
8577                           lCount));
8578
8579             ASSERT( lCount >= 0);
8580         }
8581
8582         if( pVolumeCB != NULL)
8583         {
8584
8585             if( pObjectInfo != NULL)
8586             {
8587
8588                 AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
8589                                   TRUE);
8590
8591                 lCount = AFSObjectInfoDecrement( pObjectInfo,
8592                                                  AFS_OBJECT_REFERENCE_STATUS);
8593
8594                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8595                               AFS_TRACE_LEVEL_VERBOSE,
8596                               "AFSGetObjectStatus Decrement count on object %p Cnt %d\n",
8597                               pObjectInfo,
8598                               lCount));
8599
8600                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8601             }
8602
8603             lCount = AFSVolumeDecrement( pVolumeCB,
8604                                          VolumeReferenceReason);
8605
8606             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8607                           AFS_TRACE_LEVEL_VERBOSE,
8608                           "AFSGetObjectStatus Decrement4 count on volume %p Reason %u Cnt %d\n",
8609                           pVolumeCB,
8610                           VolumeReferenceReason,
8611                           lCount));
8612         }
8613
8614         if( pNameArray != NULL)
8615         {
8616
8617             AFSFreeNameArray( pNameArray);
8618         }
8619     }
8620
8621     return ntStatus;
8622 }
8623
8624 NTSTATUS
8625 AFSCheckSymlinkAccess( IN AFSDirectoryCB *ParentDirectoryCB,
8626                        IN UNICODE_STRING *ComponentName)
8627 {
8628
8629     NTSTATUS ntStatus = STATUS_SUCCESS;
8630     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
8631     AFSDirectoryCB *pDirEntry = NULL;
8632     ULONG ulCRC = 0;
8633     LONG lCount;
8634
8635     __Enter
8636     {
8637
8638         //
8639         // Search for the entry in the parent
8640         //
8641
8642         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8643                       AFS_TRACE_LEVEL_VERBOSE_2,
8644                       "AFSCheckSymlinkAccess Searching for entry %wZ case sensitive\n",
8645                       ComponentName));
8646
8647         ulCRC = AFSGenerateCRC( ComponentName,
8648                                 FALSE);
8649
8650         AFSAcquireShared( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
8651                           TRUE);
8652
8653         AFSLocateCaseSensitiveDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
8654                                         ulCRC,
8655                                         &pDirEntry);
8656
8657         if( pDirEntry == NULL)
8658         {
8659
8660             //
8661             // Missed so perform a case insensitive lookup
8662             //
8663
8664             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8665                           AFS_TRACE_LEVEL_VERBOSE_2,
8666                           "AFSCheckSymlinkAccess Searching for entry %wZ case insensitive\n",
8667                           ComponentName));
8668
8669             ulCRC = AFSGenerateCRC( ComponentName,
8670                                     TRUE);
8671
8672             AFSLocateCaseInsensitiveDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
8673                                               ulCRC,
8674                                               &pDirEntry);
8675
8676             if( pDirEntry == NULL)
8677             {
8678
8679                 //
8680                 // OK, if this component is a valid short name then try
8681                 // a lookup in the short name tree
8682                 //
8683
8684                 if( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
8685                     RtlIsNameLegalDOS8Dot3( ComponentName,
8686                                             NULL,
8687                                             NULL))
8688                 {
8689
8690                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8691                                   AFS_TRACE_LEVEL_VERBOSE_2,
8692                                   "AFSCheckSymlinkAccess Searching for entry %wZ short name\n",
8693                                   ComponentName));
8694
8695                     AFSLocateShortNameDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.ShortNameTree,
8696                                                 ulCRC,
8697                                                 &pDirEntry);
8698                 }
8699             }
8700         }
8701
8702         if( pDirEntry != NULL)
8703         {
8704             lCount = InterlockedIncrement( &pDirEntry->DirOpenReferenceCount);
8705
8706             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8707                           AFS_TRACE_LEVEL_VERBOSE,
8708                           "AFSCheckSymlinkAccess Increment count on %wZ DE %p Ccb %p Cnt %d\n",
8709                           &pDirEntry->NameInformation.FileName,
8710                           pDirEntry,
8711                           NULL,
8712                           lCount));
8713
8714             ASSERT( lCount >= 0);
8715         }
8716
8717         AFSReleaseResource( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
8718
8719         if( pDirEntry == NULL)
8720         {
8721
8722             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8723                           AFS_TRACE_LEVEL_VERBOSE_2,
8724                           "AFSCheckSymlinkAccess Failed to locate entry %wZ ntStatus %08X\n",
8725                           ComponentName,
8726                           STATUS_OBJECT_NAME_NOT_FOUND));
8727
8728             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
8729         }
8730
8731         //
8732         // We have the symlink object but previously failed to process it so return access
8733         // denied.
8734         //
8735
8736         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8737                       AFS_TRACE_LEVEL_VERBOSE_2,
8738                       "AFSCheckSymlinkAccess Failing symlink access to entry %wZ REPARSE_POINT_NOT_RESOLVED\n",
8739                       ComponentName));
8740
8741         ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
8742
8743         lCount = InterlockedDecrement( &pDirEntry->DirOpenReferenceCount);
8744
8745         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8746                       AFS_TRACE_LEVEL_VERBOSE,
8747                       "AFSCheckSymlinkAccess Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
8748                       &pDirEntry->NameInformation.FileName,
8749                       pDirEntry,
8750                       NULL,
8751                       lCount));
8752
8753         ASSERT( lCount >= 0);
8754
8755 try_exit:
8756
8757         NOTHING;
8758     }
8759
8760     return ntStatus;
8761 }
8762
8763 NTSTATUS
8764 AFSRetrieveFinalComponent( IN UNICODE_STRING *FullPathName,
8765                            OUT UNICODE_STRING *ComponentName)
8766 {
8767
8768     NTSTATUS ntStatus = STATUS_SUCCESS;
8769     UNICODE_STRING uniFullPathName, uniRemainingPath, uniComponentName;
8770
8771     uniFullPathName = *FullPathName;
8772
8773     while( TRUE)
8774     {
8775
8776         FsRtlDissectName( uniFullPathName,
8777                           &uniComponentName,
8778                           &uniRemainingPath);
8779
8780         if( uniRemainingPath.Length == 0)
8781         {
8782             break;
8783         }
8784
8785         uniFullPathName = uniRemainingPath;
8786     }
8787
8788     if( uniComponentName.Length > 0)
8789     {
8790         *ComponentName = uniComponentName;
8791     }
8792
8793     return ntStatus;
8794 }
8795
8796 void
8797 AFSDumpTraceFiles_Default()
8798 {
8799     return;
8800 }
8801
8802 BOOLEAN
8803 AFSValidNameFormat( IN UNICODE_STRING *FileName)
8804 {
8805
8806     BOOLEAN bIsValidName = TRUE;
8807     USHORT usIndex = 0;
8808
8809     __Enter
8810     {
8811
8812         while( usIndex < FileName->Length/sizeof( WCHAR))
8813         {
8814
8815             if( FileName->Buffer[ usIndex] == L':' ||
8816                 FileName->Buffer[ usIndex] == L'*' ||
8817                 FileName->Buffer[ usIndex] == L'?' ||
8818                 FileName->Buffer[ usIndex] == L'"' ||
8819                 FileName->Buffer[ usIndex] == L'<' ||
8820                 FileName->Buffer[ usIndex] == L'>')
8821             {
8822                 bIsValidName = FALSE;
8823                 break;
8824             }
8825
8826             usIndex++;
8827         }
8828     }
8829
8830     return bIsValidName;
8831 }
8832
8833 NTSTATUS
8834 AFSCreateDefaultSecurityDescriptor()
8835 {
8836
8837     NTSTATUS ntStatus = STATUS_SUCCESS;
8838     PACL pSACL = NULL;
8839     ULONG ulSACLSize = 0;
8840     SYSTEM_MANDATORY_LABEL_ACE* pACE = NULL;
8841     ULONG ulACESize = 0;
8842     SECURITY_DESCRIPTOR *pSecurityDescr = NULL;
8843     ULONG ulSDLength = 0;
8844     SECURITY_DESCRIPTOR *pRelativeSecurityDescr = NULL;
8845     PSID pWorldSID = NULL;
8846     ULONG *pulSubAuthority = NULL;
8847     ULONG ulWorldSIDLEngth = 0;
8848
8849     __Enter
8850     {
8851
8852         ulWorldSIDLEngth = RtlLengthRequiredSid( 1);
8853
8854         pWorldSID = (PSID)ExAllocatePoolWithTag( PagedPool,
8855                                                  ulWorldSIDLEngth,
8856                                                  AFS_GENERIC_MEMORY_29_TAG);
8857
8858         if( pWorldSID == NULL)
8859         {
8860             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate World SID\n");
8861
8862             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8863         }
8864
8865         RtlZeroMemory( pWorldSID,
8866                        ulWorldSIDLEngth);
8867
8868         RtlInitializeSid( pWorldSID,
8869                           &SeWorldSidAuthority,
8870                           1);
8871
8872         pulSubAuthority = RtlSubAuthoritySid(pWorldSID, 0);
8873         *pulSubAuthority = SECURITY_WORLD_RID;
8874
8875         if( AFSRtlSetSaclSecurityDescriptor == NULL)
8876         {
8877
8878             AFSPrint( "AFSCreateDefaultSecurityDescriptor AFSRtlSetSaclSecurityDescriptor == NULL\n");
8879         }
8880         else
8881         {
8882
8883             ulACESize = sizeof( SYSTEM_MANDATORY_LABEL_ACE) + 128;
8884
8885             pACE = (SYSTEM_MANDATORY_LABEL_ACE *)ExAllocatePoolWithTag( PagedPool,
8886                                                                         ulACESize,
8887                                                                         AFS_GENERIC_MEMORY_29_TAG);
8888
8889             if( pACE == NULL)
8890             {
8891
8892                 AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_29_TAG\n");
8893
8894                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8895             }
8896
8897             RtlZeroMemory( pACE,
8898                            ulACESize);
8899
8900             pACE->Header.AceFlags = OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE;
8901             pACE->Header.AceType = SYSTEM_MANDATORY_LABEL_ACE_TYPE;
8902             pACE->Header.AceSize = FIELD_OFFSET( SYSTEM_MANDATORY_LABEL_ACE, SidStart) + (USHORT)RtlLengthSid( SeExports->SeLowMandatorySid);
8903             pACE->Mask = SYSTEM_MANDATORY_LABEL_NO_WRITE_UP;
8904
8905             RtlCopySid( RtlLengthSid( SeExports->SeLowMandatorySid),
8906                         &pACE->SidStart,
8907                         SeExports->SeLowMandatorySid);
8908
8909             ulSACLSize = sizeof(ACL) + RtlLengthSid( SeExports->SeLowMandatorySid) +
8910                 FIELD_OFFSET( SYSTEM_MANDATORY_LABEL_ACE, SidStart) + ulACESize;
8911
8912             pSACL = (PACL)ExAllocatePoolWithTag( PagedPool,
8913                                                  ulSACLSize,
8914                                                  AFS_GENERIC_MEMORY_29_TAG);
8915
8916             if( pSACL == NULL)
8917             {
8918
8919                 AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_29_TAG\n");
8920
8921                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8922             }
8923
8924             ntStatus = RtlCreateAcl( pSACL,
8925                                      ulSACLSize,
8926                                      ACL_REVISION);
8927
8928             if( !NT_SUCCESS( ntStatus))
8929             {
8930
8931                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlCreateAcl ntStatus %08lX\n",
8932                           ntStatus);
8933
8934                 try_return( ntStatus);
8935             }
8936
8937             ntStatus = RtlAddAce( pSACL,
8938                                   ACL_REVISION,
8939                                   0,
8940                                   pACE,
8941                                   pACE->Header.AceSize);
8942
8943             if( !NT_SUCCESS( ntStatus))
8944             {
8945
8946                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlAddAce ntStatus %08lX\n",
8947                           ntStatus);
8948
8949                 try_return( ntStatus);
8950             }
8951         }
8952
8953         pSecurityDescr = (SECURITY_DESCRIPTOR *)ExAllocatePoolWithTag( NonPagedPool,
8954                                                                        sizeof( SECURITY_DESCRIPTOR),
8955                                                                        AFS_GENERIC_MEMORY_27_TAG);
8956
8957         if( pSecurityDescr == NULL)
8958         {
8959
8960             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_27_TAG\n");
8961
8962             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8963         }
8964
8965         ntStatus = RtlCreateSecurityDescriptor( pSecurityDescr,
8966                                                 SECURITY_DESCRIPTOR_REVISION);
8967
8968         if( !NT_SUCCESS( ntStatus))
8969         {
8970
8971             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlCreateSecurityDescriptor ntStatus %08lX\n",
8972                       ntStatus);
8973
8974             try_return( ntStatus);
8975         }
8976
8977         if( AFSRtlSetSaclSecurityDescriptor != NULL)
8978         {
8979             ntStatus = AFSRtlSetSaclSecurityDescriptor( pSecurityDescr,
8980                                                         TRUE,
8981                                                         pSACL,
8982                                                         FALSE);
8983
8984             if( !NT_SUCCESS( ntStatus))
8985             {
8986
8987                 AFSPrint( "AFSCreateDefaultSecurityDescriptor AFSRtlSetSaclSecurityDescriptor ntStatus %08lX\n",
8988                           ntStatus);
8989
8990                 try_return( ntStatus);
8991             }
8992         }
8993
8994         //
8995         // Add in the group and owner to the SD
8996         //
8997
8998         if( AFSRtlSetGroupSecurityDescriptor != NULL)
8999         {
9000             ntStatus = AFSRtlSetGroupSecurityDescriptor( pSecurityDescr,
9001                                                          pWorldSID,
9002                                                          FALSE);
9003
9004             if( !NT_SUCCESS( ntStatus))
9005             {
9006
9007                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlSetGroupSecurityDescriptor failed ntStatus %08lX\n",
9008                           ntStatus);
9009
9010                 try_return( ntStatus);
9011             }
9012         }
9013
9014         ntStatus = RtlSetOwnerSecurityDescriptor( pSecurityDescr,
9015                                                   pWorldSID,
9016                                                   FALSE);
9017
9018         if( !NT_SUCCESS( ntStatus))
9019         {
9020
9021             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlSetOwnerSecurityDescriptor failed ntStatus %08lX\n",
9022                       ntStatus);
9023
9024             try_return( ntStatus);
9025         }
9026
9027         if( !RtlValidSecurityDescriptor( pSecurityDescr))
9028         {
9029
9030             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlValidSecurityDescriptor NOT\n");
9031
9032             try_return( ntStatus = STATUS_INVALID_PARAMETER);
9033         }
9034
9035         pRelativeSecurityDescr = (SECURITY_DESCRIPTOR *)AFSLibExAllocatePoolWithTag( NonPagedPool,
9036                                                                                      PAGE_SIZE,
9037                                                                                      AFS_GENERIC_MEMORY_27_TAG);
9038
9039         if( pRelativeSecurityDescr == NULL)
9040         {
9041
9042             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_27_TAG\n");
9043
9044             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
9045         }
9046
9047         ulSDLength = PAGE_SIZE;
9048
9049         ntStatus = RtlAbsoluteToSelfRelativeSD( pSecurityDescr,
9050                                                 pRelativeSecurityDescr,
9051                                                 &ulSDLength);
9052
9053         if( !NT_SUCCESS( ntStatus))
9054         {
9055
9056             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlAbsoluteToSelfRelativeSD ntStatus %08lX\n",
9057                       ntStatus);
9058
9059             try_return( ntStatus);
9060         }
9061
9062         AFSDefaultSD = pRelativeSecurityDescr;
9063
9064 try_exit:
9065
9066         if( !NT_SUCCESS( ntStatus))
9067         {
9068
9069             if( pRelativeSecurityDescr != NULL)
9070             {
9071
9072                 AFSLibExFreePoolWithTag( pRelativeSecurityDescr,
9073                                          AFS_GENERIC_MEMORY_27_TAG);
9074             }
9075         }
9076
9077         if( pSecurityDescr != NULL)
9078         {
9079
9080             AFSLibExFreePoolWithTag( pSecurityDescr,
9081                                      AFS_GENERIC_MEMORY_27_TAG);
9082         }
9083
9084         if( pSACL != NULL)
9085         {
9086
9087             AFSLibExFreePoolWithTag( pSACL,
9088                                      AFS_GENERIC_MEMORY_29_TAG);
9089         }
9090
9091         if( pACE != NULL)
9092         {
9093
9094             AFSLibExFreePoolWithTag( pACE,
9095                                      AFS_GENERIC_MEMORY_29_TAG);
9096         }
9097
9098         if( pWorldSID != NULL)
9099         {
9100
9101             AFSLibExFreePoolWithTag( pWorldSID,
9102                                      AFS_GENERIC_MEMORY_29_TAG);
9103         }
9104     }
9105
9106     return ntStatus;
9107 }
9108
9109 void
9110 AFSRetrieveParentPath( IN UNICODE_STRING *FullFileName,
9111                        OUT UNICODE_STRING *ParentPath)
9112 {
9113
9114     *ParentPath = *FullFileName;
9115
9116     //
9117     // If the final character is a \, jump over it
9118     //
9119
9120     if( ParentPath->Buffer[ (ParentPath->Length/sizeof( WCHAR)) - 1] == L'\\')
9121     {
9122         ParentPath->Length -= sizeof( WCHAR);
9123     }
9124
9125     while( ParentPath->Buffer[ (ParentPath->Length/sizeof( WCHAR)) - 1] != L'\\')
9126     {
9127         ParentPath->Length -= sizeof( WCHAR);
9128     }
9129
9130     //
9131     // And the separator
9132     //
9133
9134     ParentPath->Length -= sizeof( WCHAR);
9135
9136     return;
9137 }
9138
9139 NTSTATUS
9140 AFSRetrieveValidAuthGroup( IN AFSFcb *Fcb,
9141                            IN AFSObjectInfoCB *ObjectInfo,
9142                            IN BOOLEAN WriteAccess,
9143                            OUT GUID *AuthGroup)
9144 {
9145
9146     NTSTATUS ntStatus = STATUS_SUCCESS;
9147     GUID     stAuthGroup, stZeroAuthGroup;
9148     BOOLEAN  bFoundAuthGroup = FALSE;
9149     AFSCcb  *pCcb = NULL;
9150     AFSFcb *pFcb = Fcb;
9151
9152     __Enter
9153     {
9154
9155         RtlZeroMemory( &stAuthGroup,
9156                        sizeof( GUID));
9157
9158         RtlZeroMemory( &stZeroAuthGroup,
9159                        sizeof( GUID));
9160
9161         if( Fcb == NULL)
9162         {
9163
9164             if( ObjectInfo != NULL &&
9165                 ObjectInfo->Fcb != NULL)
9166             {
9167                 pFcb = ObjectInfo->Fcb;
9168             }
9169         }
9170
9171         if( pFcb != NULL)
9172         {
9173
9174             AFSAcquireShared( &Fcb->NPFcb->CcbListLock,
9175                               TRUE);
9176
9177             pCcb = Fcb->CcbListHead;
9178
9179             while( pCcb != NULL)
9180             {
9181
9182                 if( WriteAccess &&
9183                     pCcb->GrantedAccess & FILE_WRITE_DATA)
9184                 {
9185                     RtlCopyMemory( &stAuthGroup,
9186                                    &pCcb->AuthGroup,
9187                                    sizeof( GUID));
9188
9189                     bFoundAuthGroup = TRUE;
9190
9191                     break;
9192                 }
9193                 else if( pCcb->GrantedAccess & FILE_READ_DATA)
9194                 {
9195                     //
9196                     // At least get the read-only access
9197                     //
9198
9199                     RtlCopyMemory( &stAuthGroup,
9200                                    &pCcb->AuthGroup,
9201                                    sizeof( GUID));
9202
9203                     bFoundAuthGroup = TRUE;
9204                 }
9205
9206                 pCcb = (AFSCcb *)pCcb->ListEntry.fLink;
9207             }
9208
9209             AFSReleaseResource( &Fcb->NPFcb->CcbListLock);
9210         }
9211
9212         if( !bFoundAuthGroup)
9213         {
9214
9215             AFSRetrieveAuthGroupFnc( (ULONGLONG)PsGetCurrentProcessId(),
9216                                      (ULONGLONG)PsGetCurrentThreadId(),
9217                                       &stAuthGroup);
9218
9219             if( RtlCompareMemory( &stZeroAuthGroup,
9220                                   &stAuthGroup,
9221                                   sizeof( GUID)) == sizeof( GUID))
9222             {
9223
9224                 DbgPrint("AFSRetrieveValidAuthGroup Failed to locate PAG\n");
9225
9226                 try_return( ntStatus = STATUS_ACCESS_DENIED);
9227             }
9228         }
9229
9230         RtlCopyMemory( AuthGroup,
9231                        &stAuthGroup,
9232                        sizeof( GUID));
9233
9234 try_exit:
9235
9236         NOTHING;
9237     }
9238
9239     return ntStatus;
9240 }
9241
9242 NTSTATUS
9243 AFSPerformObjectInvalidate( IN AFSObjectInfoCB *ObjectInfo,
9244                             IN ULONG InvalidateReason)
9245 {
9246
9247     AFSDeviceExt       *pRDRDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
9248     NTSTATUS            ntStatus = STATUS_SUCCESS;
9249     LONG                lCount;
9250
9251     __Enter
9252     {
9253
9254         switch( InvalidateReason)
9255         {
9256
9257             case AFS_INVALIDATE_DELETED:
9258             {
9259
9260                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
9261                               AFS_TRACE_LEVEL_VERBOSE,
9262                               "AFSPerformObjectInvalidation on node type %d for FID %08lX-%08lX-%08lX-%08lX Reason DELETED\n",
9263                               ObjectInfo->FileType,
9264                               ObjectInfo->FileId.Cell,
9265                               ObjectInfo->FileId.Volume,
9266                               ObjectInfo->FileId.Vnode,
9267                               ObjectInfo->FileId.Unique));
9268
9269                 if( ObjectInfo->FileType == AFS_FILE_TYPE_FILE &&
9270                     ObjectInfo->Fcb != NULL)
9271                 {
9272
9273                     if( !BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
9274                     {
9275
9276                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9277                                         TRUE);
9278
9279                         ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
9280
9281                         KeSetEvent( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
9282                                     0,
9283                                     FALSE);
9284
9285                         //
9286                         // Clear out the extents
9287                         // And get rid of them (note this involves waiting
9288                         // for any writes or reads to the cache to complete)
9289                         //
9290
9291                         AFSTearDownFcbExtents( ObjectInfo->Fcb,
9292                                                NULL);
9293
9294                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
9295                     }
9296                 }
9297
9298                 ObjectInfo->Links = 0;
9299
9300                 break;
9301             }
9302
9303             case AFS_INVALIDATE_DATA_VERSION:
9304             {
9305
9306                 if( ObjectInfo->FileType == AFS_FILE_TYPE_FILE &&
9307                     ObjectInfo->Fcb != NULL)
9308                 {
9309
9310                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
9311                                   AFS_TRACE_LEVEL_VERBOSE,
9312                                   "AFSPerformObjectInvalidation on node type %d for FID %08lX-%08lX-%08lX-%08lX Reason DATA_VERSION FCB %0p\n",
9313                                   ObjectInfo->FileType,
9314                                   ObjectInfo->FileId.Cell,
9315                                   ObjectInfo->FileId.Volume,
9316                                   ObjectInfo->FileId.Vnode,
9317                                   ObjectInfo->FileId.Unique,
9318                                   ObjectInfo->Fcb));
9319
9320                     if( BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
9321                     {
9322
9323                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9324                                       AFS_TRACE_LEVEL_VERBOSE,
9325                                       "AFSPerformObjectInvalidate Acquiring Fcb lock %p EXCL %08lX\n",
9326                                       &ObjectInfo->Fcb->NPFcb->Resource,
9327                                       PsGetCurrentThread()));
9328
9329                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Resource,
9330                                         TRUE);
9331
9332                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9333                                       AFS_TRACE_LEVEL_VERBOSE,
9334                                       "AFSPerformObjectInvalidation DirectIO Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
9335                                       &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9336                                       PsGetCurrentThread()));
9337
9338                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9339                                         TRUE);
9340
9341                         __try
9342                         {
9343
9344                             if( ObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL &&
9345                                 !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9346                                                       NULL,
9347                                                       0,
9348                                                       FALSE))
9349                             {
9350
9351                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9352                                               AFS_TRACE_LEVEL_WARNING,
9353                                               "AFSPerformObjectInvalidation DirectIO CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9354                                               ObjectInfo->FileId.Cell,
9355                                               ObjectInfo->FileId.Volume,
9356                                               ObjectInfo->FileId.Vnode,
9357                                               ObjectInfo->FileId.Unique));
9358
9359                                 SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9360
9361                                 SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9362                             }
9363                         }
9364                         __except( EXCEPTION_EXECUTE_HANDLER)
9365                         {
9366
9367                             ntStatus = GetExceptionCode();
9368
9369                             AFSDbgTrace(( 0,
9370                                           0,
9371                                           "EXCEPTION - AFSPerformObjectInvalidation DirectIO FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
9372                                           ObjectInfo->FileId.Cell,
9373                                           ObjectInfo->FileId.Volume,
9374                                           ObjectInfo->FileId.Vnode,
9375                                           ObjectInfo->FileId.Unique,
9376                                           ntStatus));
9377
9378                             SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9379
9380                             SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9381                         }
9382
9383                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9384                                       AFS_TRACE_LEVEL_VERBOSE,
9385                                       "AFSPerformObjectInvalidation DirectIO Releasing Fcb SectionObject lock %p EXCL %08lX\n",
9386                                       &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9387                                       PsGetCurrentThread()));
9388
9389                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->SectionObjectResource);
9390
9391                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9392                                       AFS_TRACE_LEVEL_VERBOSE,
9393                                       "AFSPerformObjectInvalidation DirectIO Releasing Fcb lock %p EXCL %08lX\n",
9394                                       &ObjectInfo->Fcb->NPFcb->Resource,
9395                                       PsGetCurrentThread()));
9396
9397                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9398                     }
9399                     else
9400                     {
9401                         LIST_ENTRY         *le;
9402                         AFSExtent          *pEntry;
9403                         ULONG               ulProcessCount = 0;
9404                         ULONG               ulCount = 0;
9405                         LARGE_INTEGER liCurrentOffset = {0,0};
9406                         LARGE_INTEGER liFlushLength = {0,0};
9407                         ULONG ulFlushLength = 0;
9408                         BOOLEAN bLocked = FALSE;
9409                         BOOLEAN bExtentsLocked = FALSE;
9410                         BOOLEAN bCleanExtents = FALSE;
9411
9412                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9413                                       AFS_TRACE_LEVEL_VERBOSE,
9414                                       "AFSPerformObjectInvalidate Acquiring Fcb lock %p EXCL %08lX\n",
9415                                       &ObjectInfo->Fcb->NPFcb->Resource,
9416                                       PsGetCurrentThread()));
9417
9418                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Resource,
9419                                         TRUE);
9420
9421                         bLocked = TRUE;
9422
9423                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9424                                       AFS_TRACE_LEVEL_VERBOSE,
9425                                       "AFSPerformObjectInvalidate Acquiring Fcb extents lock %p SHARED %08lX\n",
9426                                       &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9427                                       PsGetCurrentThread()));
9428
9429                         AFSAcquireShared( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9430                                           TRUE);
9431
9432                         bExtentsLocked = TRUE;
9433
9434                         //
9435                         // There are several possibilities here:
9436                         //
9437                         // 0. If there are no extents or all of the extents are dirty, do nothing.
9438                         //
9439                         // 1. There could be nothing dirty and an open reference count of zero
9440                         //    in which case we can just tear down all of the extents without
9441                         //    holding any resources.
9442                         //
9443                         // 2. There could be nothing dirty and a non-zero open reference count
9444                         //    in which case we can issue a CcPurge against the entire file
9445                         //    while holding just the Fcb Resource.
9446                         //
9447                         // 3. There can be dirty extents in which case we need to identify
9448                         //    the non-dirty ranges and then perform a CcPurge on just the
9449                         //    non-dirty ranges while holding just the Fcb Resource.
9450                         //
9451
9452                         if ( ObjectInfo->Fcb->Specific.File.ExtentCount != ObjectInfo->Fcb->Specific.File.ExtentsDirtyCount)
9453                         {
9454
9455                             if ( ObjectInfo->Fcb->Specific.File.ExtentsDirtyCount == 0)
9456                             {
9457
9458                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9459
9460                                 bExtentsLocked = FALSE;
9461
9462                                 if ( ObjectInfo->Fcb->OpenReferenceCount == 0)
9463                                 {
9464
9465                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9466
9467                                     bLocked = FALSE;
9468
9469                                     AFSTearDownFcbExtents( ObjectInfo->Fcb,
9470                                                            NULL);
9471                                 }
9472                                 else
9473                                 {
9474
9475                                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9476                                                   AFS_TRACE_LEVEL_VERBOSE,
9477                                                   "AFSPerformObjectInvalidation Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
9478                                                   &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9479                                                   PsGetCurrentThread()));
9480
9481                                     AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9482                                                     TRUE);
9483
9484                                     __try
9485                                     {
9486
9487                                         if( ObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL &&
9488                                             !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9489                                                                   NULL,
9490                                                                   0,
9491                                                                   FALSE))
9492                                         {
9493
9494                                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9495                                                           AFS_TRACE_LEVEL_WARNING,
9496                                                           "AFSPerformObjectInvalidation CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9497                                                           ObjectInfo->FileId.Cell,
9498                                                           ObjectInfo->FileId.Volume,
9499                                                           ObjectInfo->FileId.Vnode,
9500                                                           ObjectInfo->FileId.Unique));
9501
9502                                             SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9503
9504                                             SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9505                                         }
9506                                         else
9507                                         {
9508
9509                                             bCleanExtents = TRUE;
9510                                         }
9511                                     }
9512                                     __except( EXCEPTION_EXECUTE_HANDLER)
9513                                     {
9514
9515                                         ntStatus = GetExceptionCode();
9516
9517                                         AFSDbgTrace(( 0,
9518                                                       0,
9519                                                       "EXCEPTION - AFSPerformObjectInvalidation FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
9520                                                       ObjectInfo->FileId.Cell,
9521                                                       ObjectInfo->FileId.Volume,
9522                                                       ObjectInfo->FileId.Vnode,
9523                                                       ObjectInfo->FileId.Unique,
9524                                                       ntStatus));
9525
9526                                         SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9527
9528                                         SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9529                                     }
9530
9531                                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9532                                                   AFS_TRACE_LEVEL_VERBOSE,
9533                                                   "AFSPerformObjectInvalidation Releasing Fcb SectionObject lock %p EXCL %08lX\n",
9534                                                   &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9535                                                   PsGetCurrentThread()));
9536
9537                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->SectionObjectResource);
9538
9539                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9540
9541                                     bLocked = FALSE;
9542                                 }
9543                             }
9544                             else
9545                             {
9546
9547                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9548
9549                                 bExtentsLocked = FALSE;
9550
9551                                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9552                                               AFS_TRACE_LEVEL_VERBOSE,
9553                                               "AFSPerformObjectInvalidation Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
9554                                               &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9555                                               PsGetCurrentThread()));
9556
9557                                 AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9558                                                 TRUE);
9559
9560                                 //
9561                                 // Must build a list of non-dirty ranges from the beginning of the file
9562                                 // to the end.  There can be at most (Fcb->Specific.File.ExtentsDirtyCount + 1)
9563                                 // ranges.  In all but the most extreme random data write scenario there will
9564                                 // be significantly fewer.
9565                                 //
9566                                 // For each range we need offset and size.
9567                                 //
9568
9569                                 AFSByteRange * ByteRangeList = NULL;
9570                                 ULONG          ulByteRangeCount = 0;
9571                                 ULONG          ulIndex;
9572                                 BOOLEAN        bPurgeOnClose = FALSE;
9573
9574                                 __try
9575                                 {
9576
9577                                     ulByteRangeCount = AFSConstructCleanByteRangeList( ObjectInfo->Fcb,
9578                                                                                        &ByteRangeList);
9579
9580                                     if ( ByteRangeList != NULL ||
9581                                          ulByteRangeCount == 0)
9582                                     {
9583
9584                                         for ( ulIndex = 0; ulIndex < ulByteRangeCount; ulIndex++)
9585                                         {
9586
9587                                             ULONG ulSize;
9588
9589                                             do {
9590
9591                                                 ulSize = ByteRangeList[ulIndex].Length.QuadPart > DWORD_MAX ? DWORD_MAX : ByteRangeList[ulIndex].Length.LowPart;
9592
9593                                                 __try
9594                                                 {
9595
9596                                                     if( ObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL &&
9597                                                         !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9598                                                                               &ByteRangeList[ulIndex].FileOffset,
9599                                                                               ulSize,
9600                                                                               FALSE))
9601                                                     {
9602
9603                                                         AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9604                                                                       AFS_TRACE_LEVEL_WARNING,
9605                                                                       "AFSPerformObjectInvalidation [1] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9606                                                                       ObjectInfo->FileId.Cell,
9607                                                                       ObjectInfo->FileId.Volume,
9608                                                                       ObjectInfo->FileId.Vnode,
9609                                                                       ObjectInfo->FileId.Unique));
9610
9611                                                         bPurgeOnClose = TRUE;
9612                                                     }
9613                                                     else
9614                                                     {
9615
9616                                                         bCleanExtents = TRUE;
9617                                                     }
9618                                                 }
9619                                                 __except( EXCEPTION_EXECUTE_HANDLER)
9620                                                 {
9621
9622                                                     ntStatus = GetExceptionCode();
9623
9624                                                     AFSDbgTrace(( 0,
9625                                                                   0,
9626                                                                   "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (1) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9627                                                                   ObjectInfo->FileId.Cell,
9628                                                                   ObjectInfo->FileId.Volume,
9629                                                                   ObjectInfo->FileId.Vnode,
9630                                                                   ObjectInfo->FileId.Unique,
9631                                                                   ntStatus));
9632                                                 }
9633
9634                                                 ByteRangeList[ulIndex].Length.QuadPart -= ulSize;
9635
9636                                                 ByteRangeList[ulIndex].FileOffset.QuadPart += ulSize;
9637
9638                                             } while ( ByteRangeList[ulIndex].Length.QuadPart > 0);
9639                                         }
9640                                     }
9641                                     else
9642                                     {
9643
9644                                         //
9645                                         // We couldn't allocate the memory to build the purge list
9646                                         // so just walk the extent list while holding the ExtentsList Resource.
9647                                         // This could deadlock but we do not have much choice.
9648                                         //
9649
9650                                         AFSAcquireExcl(  &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9651                                                         TRUE);
9652                                         bExtentsLocked = TRUE;
9653
9654                                         le = ObjectInfo->Fcb->Specific.File.ExtentsLists[AFS_EXTENTS_LIST].Flink;
9655
9656                                         ulProcessCount = 0;
9657
9658                                         ulCount = (ULONG)ObjectInfo->Fcb->Specific.File.ExtentCount;
9659
9660                                         if( ulCount > 0)
9661                                         {
9662                                             pEntry = ExtentFor( le, AFS_EXTENTS_LIST );
9663
9664                                             while( ulProcessCount < ulCount)
9665                                             {
9666                                                 pEntry = ExtentFor( le, AFS_EXTENTS_LIST );
9667
9668                                                 if( !BooleanFlagOn( pEntry->Flags, AFS_EXTENT_DIRTY))
9669                                                 {
9670                                                     __try
9671                                                     {
9672                                                         if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9673                                                                                   &pEntry->FileOffset,
9674                                                                                   pEntry->Size,
9675                                                                                   FALSE))
9676                                                         {
9677
9678                                                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9679                                                                           AFS_TRACE_LEVEL_WARNING,
9680                                                                           "AFSPerformObjectInvalidation [2] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9681                                                                           ObjectInfo->FileId.Cell,
9682                                                                           ObjectInfo->FileId.Volume,
9683                                                                           ObjectInfo->FileId.Vnode,
9684                                                                           ObjectInfo->FileId.Unique));
9685
9686                                                             bPurgeOnClose = TRUE;
9687                                                         }
9688                                                         else
9689                                                         {
9690
9691                                                             bCleanExtents = TRUE;
9692                                                         }
9693                                                     }
9694                                                     __except( EXCEPTION_EXECUTE_HANDLER)
9695                                                     {
9696
9697                                                         ntStatus = GetExceptionCode();
9698
9699                                                         AFSDbgTrace(( 0,
9700                                                                       0,
9701                                                                       "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (2) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9702                                                                       ObjectInfo->FileId.Cell,
9703                                                                       ObjectInfo->FileId.Volume,
9704                                                                       ObjectInfo->FileId.Vnode,
9705                                                                       ObjectInfo->FileId.Unique,
9706                                                                       ntStatus));
9707                                                     }
9708                                                 }
9709
9710                                                 if( liCurrentOffset.QuadPart < pEntry->FileOffset.QuadPart)
9711                                                 {
9712
9713                                                     liFlushLength.QuadPart = pEntry->FileOffset.QuadPart - liCurrentOffset.QuadPart;
9714
9715                                                     while( liFlushLength.QuadPart > 0)
9716                                                     {
9717
9718                                                         if( liFlushLength.QuadPart > 512 * 1024000)
9719                                                         {
9720                                                             ulFlushLength = 512 * 1024000;
9721                                                         }
9722                                                         else
9723                                                         {
9724                                                             ulFlushLength = liFlushLength.LowPart;
9725                                                         }
9726
9727                                                         __try
9728                                                         {
9729                                                             if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9730                                                                                       &liCurrentOffset,
9731                                                                                       ulFlushLength,
9732                                                                                       FALSE))
9733                                                             {
9734
9735                                                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9736                                                                               AFS_TRACE_LEVEL_WARNING,
9737                                                                               "AFSPerformObjectInvalidation [3] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9738                                                                               ObjectInfo->FileId.Cell,
9739                                                                               ObjectInfo->FileId.Volume,
9740                                                                               ObjectInfo->FileId.Vnode,
9741                                                                               ObjectInfo->FileId.Unique));
9742
9743                                                                 bPurgeOnClose = TRUE;
9744                                                             }
9745                                                             else
9746                                                             {
9747
9748                                                                 bCleanExtents = TRUE;
9749                                                             }
9750                                                         }
9751                                                         __except( EXCEPTION_EXECUTE_HANDLER)
9752                                                         {
9753
9754                                                             ntStatus = GetExceptionCode();
9755
9756                                                             AFSDbgTrace(( 0,
9757                                                                           0,
9758                                                                           "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (3) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9759                                                                           ObjectInfo->FileId.Cell,
9760                                                                           ObjectInfo->FileId.Volume,
9761                                                                           ObjectInfo->FileId.Vnode,
9762                                                                           ObjectInfo->FileId.Unique,
9763                                                                           ntStatus));
9764                                                         }
9765
9766                                                         liFlushLength.QuadPart -= ulFlushLength;
9767                                                     }
9768                                                 }
9769
9770                                                 liCurrentOffset.QuadPart = pEntry->FileOffset.QuadPart + pEntry->Size;
9771
9772                                                 ulProcessCount++;
9773                                                 le = le->Flink;
9774                                             }
9775                                         }
9776                                         else
9777                                         {
9778                                             __try
9779                                             {
9780                                                 if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9781                                                                           NULL,
9782                                                                           0,
9783                                                                           FALSE))
9784                                                 {
9785
9786                                                     AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9787                                                                   AFS_TRACE_LEVEL_WARNING,
9788                                                                   "AFSPerformObjectInvalidation [4] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9789                                                                   ObjectInfo->FileId.Cell,
9790                                                                   ObjectInfo->FileId.Volume,
9791                                                                   ObjectInfo->FileId.Vnode,
9792                                                                   ObjectInfo->FileId.Unique));
9793
9794                                                     bPurgeOnClose = TRUE;
9795                                                 }
9796                                                 else
9797                                                 {
9798
9799                                                     bCleanExtents = TRUE;
9800                                                 }
9801                                             }
9802                                             __except( EXCEPTION_EXECUTE_HANDLER)
9803                                             {
9804
9805                                                 ntStatus = GetExceptionCode();
9806
9807                                                 AFSDbgTrace(( 0,
9808                                                               0,
9809                                                               "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (4) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9810                                                               ObjectInfo->FileId.Cell,
9811                                                               ObjectInfo->FileId.Volume,
9812                                                               ObjectInfo->FileId.Vnode,
9813                                                               ObjectInfo->FileId.Unique,
9814                                                               ntStatus));
9815                                             }
9816                                         }
9817
9818                                         if ( bPurgeOnClose)
9819                                         {
9820
9821                                             SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9822                                         }
9823                                     }
9824                                 }
9825                                 __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()))
9826                                 {
9827
9828                                     ntStatus = GetExceptionCode();
9829
9830                                     AFSDbgTrace(( 0,
9831                                                   0,
9832                                                   "EXCEPTION - AFSPerformObjectInvalidation FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9833                                                   ObjectInfo->FileId.Cell,
9834                                                   ObjectInfo->FileId.Volume,
9835                                                   ObjectInfo->FileId.Vnode,
9836                                                   ObjectInfo->FileId.Unique,
9837                                                   ntStatus));
9838                                 }
9839
9840                                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9841                                               AFS_TRACE_LEVEL_VERBOSE,
9842                                               "AFSPerformObjectInvalidation Releasing Fcb SectionObject lock %p EXCL %08lX\n",
9843                                               &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9844                                               PsGetCurrentThread()));
9845
9846                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->SectionObjectResource);
9847
9848                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9849
9850                                 bLocked = FALSE;
9851                             }
9852                         }
9853
9854                         if ( bExtentsLocked)
9855                         {
9856
9857                             AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9858                         }
9859
9860                         if ( bLocked)
9861                         {
9862
9863                             AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9864                         }
9865
9866                         if ( bCleanExtents)
9867                         {
9868
9869                             AFSReleaseCleanExtents( ObjectInfo->Fcb,
9870                                                     NULL);
9871                         }
9872                     }
9873                 }
9874                 else if ( ObjectInfo->FileType == AFS_FILE_TYPE_FILE)
9875                 {
9876
9877                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
9878                                   AFS_TRACE_LEVEL_VERBOSE,
9879                                   "AFSPerformObjectInvalidation on node type %d for FID %08lX-%08lX-%08lX-%08lX Reason DATA_VERSION FCB NULL\n",
9880                                   ObjectInfo->FileType,
9881                                   ObjectInfo->FileId.Cell,
9882                                   ObjectInfo->FileId.Volume,
9883                                   ObjectInfo->FileId.Vnode,
9884                                   ObjectInfo->FileId.Unique));
9885
9886                     SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9887                 }
9888
9889                 break;
9890             }
9891         }
9892
9893         //
9894         // Destroy the reference passed in by the caller to AFSInvalidateObject
9895         // or AFSQueueInvalidateObject
9896         //
9897
9898         AFSAcquireShared( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
9899                           TRUE);
9900
9901         lCount = AFSObjectInfoDecrement( ObjectInfo,
9902                                          AFS_OBJECT_REFERENCE_INVALIDATION);
9903
9904         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
9905                       AFS_TRACE_LEVEL_VERBOSE,
9906                       "AFSPerformObjectInvalidation Decrement count on object %p Cnt %d\n",
9907                       ObjectInfo,
9908                       lCount));
9909
9910         AFSReleaseResource( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
9911     }
9912
9913     return ntStatus;
9914 }
9915
9916 BOOLEAN
9917 AFSIgnoreReparsePointToFile( void)
9918 {
9919     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
9920     BOOLEAN bIgnoreReparsePoint;
9921
9922     {
9923
9924         bIgnoreReparsePoint = BooleanFlagOn( pDeviceExt->Specific.RDR.ReparsePointPolicy,
9925                                              AFS_REPARSE_POINT_TO_FILE_AS_FILE);
9926     }
9927
9928     return bIgnoreReparsePoint;
9929 }
9930
9931 NTSTATUS
9932 AFSRetrieveTargetFileInfo( IN PUNICODE_STRING TargetName,
9933                            OUT AFSFileInfoCB *FileInfo)
9934 {
9935
9936     NTSTATUS ntStatus = STATUS_SUCCESS;
9937     OBJECT_ATTRIBUTES stObjectAttribs;
9938     HANDLE hFile = NULL;
9939     IO_STATUS_BLOCK stIoStatus;
9940     FILE_NETWORK_OPEN_INFORMATION stFileInfo;
9941
9942     __Enter
9943     {
9944
9945         InitializeObjectAttributes( &stObjectAttribs,
9946                                     TargetName,
9947                                     OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
9948                                     NULL,
9949                                     NULL);
9950
9951         ntStatus = ZwCreateFile( &hFile,
9952                                  FILE_READ_ATTRIBUTES,
9953                                  &stObjectAttribs,
9954                                  &stIoStatus,
9955                                  NULL,
9956                                  0,
9957                                  FILE_SHARE_READ | FILE_SHARE_WRITE,
9958                                  FILE_OPEN,
9959                                  FILE_SYNCHRONOUS_IO_NONALERT,
9960                                  NULL,
9961                                  0);
9962
9963         if( !NT_SUCCESS( ntStatus))
9964         {
9965
9966             try_return( ntStatus);
9967         }
9968
9969         ntStatus = ZwQueryInformationFile( hFile,
9970                                            &stIoStatus,
9971                                            &stFileInfo,
9972                                            sizeof( FILE_NETWORK_OPEN_INFORMATION),
9973                                            FileNetworkOpenInformation);
9974
9975         if( !NT_SUCCESS( ntStatus))
9976         {
9977
9978             try_return( ntStatus);
9979         }
9980
9981         FileInfo->FileAttributes = stFileInfo.FileAttributes;
9982
9983         FileInfo->AllocationSize = stFileInfo.AllocationSize;
9984
9985         FileInfo->EndOfFile = stFileInfo.EndOfFile;
9986
9987         FileInfo->CreationTime = stFileInfo.CreationTime;
9988
9989         FileInfo->LastAccessTime = stFileInfo.LastAccessTime;
9990
9991         FileInfo->LastWriteTime = stFileInfo.LastWriteTime;
9992
9993         FileInfo->ChangeTime = stFileInfo.ChangeTime;
9994
9995 try_exit:
9996
9997         if( hFile != NULL)
9998         {
9999             ZwClose( hFile);
10000         }
10001     }
10002
10003     return ntStatus;
10004 }