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
5687     __Enter
5688     {
5689
5690         //
5691         // Retrieve a target name for the entry
5692         //
5693
5694         AFSAcquireShared( &DirectoryCB->NonPaged->Lock,
5695                           TRUE);
5696
5697         if( DirectoryCB->NameInformation.TargetName.Length == 0)
5698         {
5699
5700             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5701
5702             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
5703                                               AuthGroup,
5704                                               FALSE,
5705                                               &pDirEntry);
5706
5707             if( !NT_SUCCESS( ntStatus) ||
5708                 pDirEntry->TargetNameLength == 0)
5709             {
5710
5711                 if( pDirEntry != NULL)
5712                 {
5713
5714                     ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
5715                 }
5716
5717                 try_return( ntStatus);
5718             }
5719
5720             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
5721                             TRUE);
5722
5723             if( DirectoryCB->NameInformation.TargetName.Length == 0)
5724             {
5725
5726                 //
5727                 // Update the target name
5728                 //
5729
5730                 ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
5731                                                 &DirectoryCB->Flags,
5732                                                 (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
5733                                                 (USHORT)pDirEntry->TargetNameLength);
5734
5735                 if( !NT_SUCCESS( ntStatus))
5736                 {
5737
5738                     AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5739
5740                     try_return( ntStatus);
5741                 }
5742             }
5743
5744             AFSConvertToShared( &DirectoryCB->NonPaged->Lock);
5745         }
5746
5747         //
5748         // Need to pass the full path in for parsing.
5749         //
5750
5751         if( AFSIsRelativeName( &DirectoryCB->NameInformation.TargetName))
5752         {
5753
5754             uniFullPathName.Length = 0;
5755             uniFullPathName.MaximumLength = ParentPathName->Length +
5756                                                     sizeof( WCHAR) +
5757                                                     DirectoryCB->NameInformation.TargetName.Length;
5758
5759             uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
5760                                                                         uniFullPathName.MaximumLength,
5761                                                                         AFS_NAME_BUFFER_SIX_TAG);
5762
5763             if( uniFullPathName.Buffer == NULL)
5764             {
5765
5766                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5767
5768                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5769             }
5770
5771             pwchBuffer = uniFullPathName.Buffer;
5772
5773             RtlZeroMemory( uniFullPathName.Buffer,
5774                            uniFullPathName.MaximumLength);
5775
5776             RtlCopyMemory( uniFullPathName.Buffer,
5777                            ParentPathName->Buffer,
5778                            ParentPathName->Length);
5779
5780             uniFullPathName.Length = ParentPathName->Length;
5781
5782             if( uniFullPathName.Buffer[ (uniFullPathName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
5783                 DirectoryCB->NameInformation.TargetName.Buffer[ 0] != L'\\')
5784             {
5785
5786                 uniFullPathName.Buffer[ uniFullPathName.Length/sizeof( WCHAR)] = L'\\';
5787
5788                 uniFullPathName.Length += sizeof( WCHAR);
5789             }
5790
5791             RtlCopyMemory( &uniFullPathName.Buffer[ uniFullPathName.Length/sizeof( WCHAR)],
5792                            DirectoryCB->NameInformation.TargetName.Buffer,
5793                            DirectoryCB->NameInformation.TargetName.Length);
5794
5795             uniFullPathName.Length += DirectoryCB->NameInformation.TargetName.Length;
5796
5797             uniParsedName.Length = uniFullPathName.Length - ParentPathName->Length;
5798             uniParsedName.MaximumLength = uniParsedName.Length;
5799
5800             uniParsedName.Buffer = &uniFullPathName.Buffer[ ParentPathName->Length/sizeof( WCHAR)];
5801
5802             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5803
5804             //
5805             // We populate up to the current parent
5806             //
5807
5808             if( RelatedNameArray != NULL)
5809             {
5810
5811                 pNameArray = AFSInitNameArray( NULL,
5812                                                RelatedNameArray->MaxElementCount);
5813
5814                 if( pNameArray == NULL)
5815                 {
5816
5817                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5818                 }
5819
5820                 ntStatus = AFSPopulateNameArrayFromRelatedArray( pNameArray,
5821                                                                  RelatedNameArray,
5822                                                                  ParentDirectoryCB);
5823             }
5824             else
5825             {
5826
5827                 pNameArray = AFSInitNameArray( NULL,
5828                                                0);
5829
5830                 if( pNameArray == NULL)
5831                 {
5832
5833                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5834                 }
5835
5836                 ntStatus = AFSPopulateNameArray( pNameArray,
5837                                                  NULL,
5838                                                  ParentDirectoryCB);
5839             }
5840
5841             if( !NT_SUCCESS( ntStatus))
5842             {
5843
5844                 try_return( ntStatus);
5845             }
5846
5847             pVolumeCB = ParentDirectoryCB->ObjectInformation->VolumeCB;
5848
5849             pParentDirEntry = ParentDirectoryCB;
5850         }
5851         else
5852         {
5853
5854             uniFullPathName.Length = 0;
5855             uniFullPathName.MaximumLength = DirectoryCB->NameInformation.TargetName.Length;
5856
5857             uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
5858                                                                         uniFullPathName.MaximumLength,
5859                                                                         AFS_NAME_BUFFER_SEVEN_TAG);
5860
5861             if( uniFullPathName.Buffer == NULL)
5862             {
5863
5864                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5865
5866                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5867             }
5868
5869             pwchBuffer = uniFullPathName.Buffer;
5870
5871             RtlZeroMemory( uniFullPathName.Buffer,
5872                            uniFullPathName.MaximumLength);
5873
5874             RtlCopyMemory( uniFullPathName.Buffer,
5875                            DirectoryCB->NameInformation.TargetName.Buffer,
5876                            DirectoryCB->NameInformation.TargetName.Length);
5877
5878             uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
5879
5880             //
5881             // This name should begin with the \afs server so parse it off and check it
5882             //
5883
5884             FsRtlDissectName( uniFullPathName,
5885                               &uniComponentName,
5886                               &uniRemainingPath);
5887
5888             if( RtlCompareUnicodeString( &uniComponentName,
5889                                          &AFSServerName,
5890                                          TRUE) != 0)
5891             {
5892
5893                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5894
5895                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
5896                               AFS_TRACE_LEVEL_ERROR,
5897                               "AFSRetrieveFileAttributes Name %wZ contains invalid server name\n",
5898                               &uniFullPathName));
5899
5900                 try_return( ntStatus = STATUS_OBJECT_PATH_INVALID);
5901             }
5902
5903             uniFullPathName = uniRemainingPath;
5904
5905             uniParsedName = uniFullPathName;
5906
5907             ulNameDifference = (ULONG)(uniFullPathName.Length > 0 ? ((char *)uniFullPathName.Buffer - (char *)pwchBuffer) : 0);
5908
5909             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
5910
5911             //
5912             // Our name array
5913             //
5914
5915             pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
5916                                            0);
5917
5918             if( pNameArray == NULL)
5919             {
5920
5921                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5922             }
5923
5924             pVolumeCB = AFSGlobalRoot;
5925
5926             pParentDirEntry = AFSGlobalRoot->DirectoryCB;
5927         }
5928
5929         //
5930         // Increment the ref count on the volume and dir entry for correct processing below
5931         //
5932
5933         VolumeReferenceReason = AFS_VOLUME_REFERENCE_FILE_ATTRS;
5934
5935         lCount = AFSVolumeIncrement( pVolumeCB,
5936                                      VolumeReferenceReason);
5937
5938         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
5939                       AFS_TRACE_LEVEL_VERBOSE,
5940                       "AFSRetrieveFileAttributes Increment count on volume %p Reason %u Cnt %d\n",
5941                       pVolumeCB,
5942                       VolumeReferenceReason,
5943                       lCount));
5944
5945         lCount = InterlockedIncrement( &pParentDirEntry->DirOpenReferenceCount);
5946
5947         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5948                       AFS_TRACE_LEVEL_VERBOSE,
5949                       "AFSRetrieveFileAttributes Increment count on %wZ DE %p Ccb %p Cnt %d\n",
5950                       &pParentDirEntry->NameInformation.FileName,
5951                       pParentDirEntry,
5952                       NULL,
5953                       lCount));
5954
5955         ntStatus = AFSLocateNameEntry( NULL,
5956                                        NULL,
5957                                        &uniFullPathName,
5958                                        &uniParsedName,
5959                                        pNameArray,
5960                                        AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL,
5961                                        pVolumeCB,
5962                                        pParentDirEntry,
5963                                        &pNewVolumeCB,
5964                                        &NewVolumeReferenceReason,
5965                                        &pNewParentDirEntry,
5966                                        &pDirectoryEntry,
5967                                        NULL);
5968
5969         if ( pNewVolumeCB != NULL)
5970         {
5971             //
5972             // AFSLocateNameEntry returns pNewVolumeCB with a reference held
5973             // even if pVolumeCB == pNewVolumeCB.  It is always safe to release
5974             // the reference on pVolumeCB that was held prior to the call.
5975             // If pVolumeCB == pNewVolumeCB, the reference from AFSLocateNameEntry
5976             // will be released second.
5977             //
5978
5979             lCount = AFSVolumeDecrement( pVolumeCB,
5980                                          VolumeReferenceReason);
5981
5982             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
5983                           AFS_TRACE_LEVEL_VERBOSE,
5984                           "AFSRetrieveFileAttributes Decrement count on volume %p Reason %u Cnt %d\n",
5985                           pVolumeCB,
5986                           VolumeReferenceReason,
5987                           lCount));
5988
5989             pVolumeCB = pNewVolumeCB;
5990
5991             pNewVolumeCB = NULL;
5992
5993             VolumeReferenceReason = NewVolumeReferenceReason;
5994
5995             NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
5996         }
5997
5998         //
5999         // AFSLocateNameEntry does not alter the reference count of
6000         // pParentDirectoryCB and it returns pNewParentDirectoryCB with
6001         // a reference held.
6002         //
6003
6004         lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6005
6006         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6007                       AFS_TRACE_LEVEL_VERBOSE,
6008                       "AFSRetrieveFileAttributes DecrementX count on %wZ DE %p Cnt %d\n",
6009                       &pParentDirEntry->NameInformation.FileName,
6010                       pParentDirEntry,
6011                       lCount));
6012
6013         pParentDirEntry = pNewParentDirEntry;
6014
6015         pNewParentDirEntry = NULL;
6016
6017         if( !NT_SUCCESS( ntStatus) ||
6018             ntStatus == STATUS_REPARSE)
6019         {
6020
6021             try_return( ntStatus);
6022         }
6023
6024         //
6025         // Store off the information
6026         //
6027
6028         FileInfo->FileAttributes = pDirectoryEntry->ObjectInformation->FileAttributes;
6029
6030         //
6031         // Check for the mount point being returned
6032         //
6033
6034         if( pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_MOUNTPOINT ||
6035             pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DFSLINK)
6036         {
6037
6038             FileInfo->FileAttributes |= (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
6039         }
6040         else if( pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
6041         {
6042
6043             if ( FileInfo->FileAttributes == FILE_ATTRIBUTE_NORMAL)
6044             {
6045
6046                 FileInfo->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
6047             }
6048             else
6049             {
6050
6051                 FileInfo->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
6052             }
6053         }
6054
6055         FileInfo->AllocationSize = pDirectoryEntry->ObjectInformation->AllocationSize;
6056
6057         FileInfo->EndOfFile = pDirectoryEntry->ObjectInformation->EndOfFile;
6058
6059         FileInfo->CreationTime = pDirectoryEntry->ObjectInformation->CreationTime;
6060
6061         FileInfo->LastAccessTime = pDirectoryEntry->ObjectInformation->LastAccessTime;
6062
6063         FileInfo->LastWriteTime = pDirectoryEntry->ObjectInformation->LastWriteTime;
6064
6065         FileInfo->ChangeTime = pDirectoryEntry->ObjectInformation->ChangeTime;
6066
6067 try_exit:
6068
6069         if( pDirEntry != NULL)
6070         {
6071
6072             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
6073         }
6074
6075         if( pDirectoryEntry != NULL)
6076         {
6077
6078             lCount = InterlockedDecrement( &pDirectoryEntry->DirOpenReferenceCount);
6079
6080             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6081                           AFS_TRACE_LEVEL_VERBOSE,
6082                           "AFSRetrieveFileAttributes Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6083                           &pDirectoryEntry->NameInformation.FileName,
6084                           pDirectoryEntry,
6085                           NULL,
6086                           lCount));
6087
6088             ASSERT( lCount >= 0);
6089         }
6090
6091         if ( pParentDirEntry != NULL)
6092         {
6093
6094             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6095
6096             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6097                           AFS_TRACE_LEVEL_VERBOSE,
6098                           "AFSRetrieveFileAttributes Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
6099                           &pParentDirEntry->NameInformation.FileName,
6100                           pParentDirEntry,
6101                           NULL,
6102                           lCount));
6103
6104             ASSERT( lCount >= 0);
6105         }
6106
6107         if( pVolumeCB != NULL)
6108         {
6109
6110             lCount = AFSVolumeDecrement( pVolumeCB,
6111                                          VolumeReferenceReason);
6112
6113             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6114                           AFS_TRACE_LEVEL_VERBOSE,
6115                           "AFSRetrieveFileAttributes Decrement2 count on volume %p Reason %u Cnt %d\n",
6116                           pVolumeCB,
6117                           VolumeReferenceReason,
6118                           lCount));
6119         }
6120
6121         if( pNameArray != NULL)
6122         {
6123
6124             AFSFreeNameArray( pNameArray);
6125         }
6126
6127         if( pwchBuffer != NULL)
6128         {
6129
6130             //
6131             // Always free the buffer that we allocated as AFSLocateNameEntry
6132             // will not free it.  If uniFullPathName.Buffer was allocated by
6133             // AFSLocateNameEntry, then we must free that as well.
6134             // Check that the uniFullPathName.Buffer in the string is not the same
6135             // offset by the length of the server name
6136             //
6137
6138             if( uniFullPathName.Length > 0 &&
6139                 pwchBuffer != (WCHAR *)((char *)uniFullPathName.Buffer - ulNameDifference))
6140             {
6141
6142                 AFSExFreePoolWithTag( uniFullPathName.Buffer, 0);
6143             }
6144
6145             AFSExFreePoolWithTag( pwchBuffer, 0);
6146         }
6147     }
6148
6149     return ntStatus;
6150 }
6151
6152 AFSObjectInfoCB *
6153 AFSAllocateObjectInfo( IN AFSObjectInfoCB *ParentObjectInfo,
6154                        IN ULONGLONG HashIndex)
6155 {
6156
6157     NTSTATUS ntStatus = STATUS_SUCCESS;
6158     AFSObjectInfoCB *pObjectInfo = NULL;
6159     LONG lCount;
6160
6161     __Enter
6162     {
6163
6164         pObjectInfo = (AFSObjectInfoCB *)AFSExAllocatePoolWithTag( PagedPool,
6165                                                                    sizeof( AFSObjectInfoCB),
6166                                                                    AFS_OBJECT_INFO_TAG);
6167
6168         if( pObjectInfo == NULL)
6169         {
6170
6171             try_return( pObjectInfo);
6172         }
6173
6174         RtlZeroMemory( pObjectInfo,
6175                        sizeof( AFSObjectInfoCB));
6176
6177         pObjectInfo->NonPagedInfo = (AFSNonPagedObjectInfoCB *)AFSExAllocatePoolWithTag( NonPagedPool,
6178                                                                                          sizeof( AFSNonPagedObjectInfoCB),
6179                                                                                          AFS_NP_OBJECT_INFO_TAG);
6180
6181         if( pObjectInfo->NonPagedInfo == NULL)
6182         {
6183
6184             AFSExFreePoolWithTag( pObjectInfo, AFS_OBJECT_INFO_TAG);
6185
6186             try_return( pObjectInfo = NULL);
6187         }
6188
6189         ExInitializeResourceLite( &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock);
6190
6191         ExInitializeResourceLite( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
6192
6193         pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock = &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock;
6194
6195         if( ParentObjectInfo != NULL)
6196         {
6197
6198             pObjectInfo->VolumeCB = ParentObjectInfo->VolumeCB;
6199
6200             pObjectInfo->ParentFileId = ParentObjectInfo->FileId;
6201
6202             SetFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_PARENT_FID);
6203
6204             AFSAcquireShared( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
6205                               TRUE);
6206
6207             lCount = AFSObjectInfoIncrement( ParentObjectInfo,
6208                                              AFS_OBJECT_REFERENCE_CHILD);
6209
6210             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6211                           AFS_TRACE_LEVEL_VERBOSE,
6212                           "AFSAllocateObjectInfo Increment count on parent object %p Cnt %d\n",
6213                           ParentObjectInfo,
6214                           lCount));
6215
6216             AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
6217         }
6218
6219         //
6220         // Initialize the access time
6221         //
6222
6223         KeQueryTickCount( &pObjectInfo->LastAccessCount);
6224
6225         if( HashIndex != 0)
6226         {
6227
6228             ASSERT( ParentObjectInfo);
6229
6230             //
6231             // Insert the entry into the object tree and list
6232             //
6233
6234             pObjectInfo->TreeEntry.HashIndex = HashIndex;
6235
6236             if( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead == NULL)
6237             {
6238
6239                 ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead = &pObjectInfo->TreeEntry;
6240             }
6241             else
6242             {
6243
6244                 ntStatus = AFSInsertHashEntry( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
6245                                                &pObjectInfo->TreeEntry);
6246
6247                 ASSERT( NT_SUCCESS( ntStatus));
6248             }
6249
6250             //
6251             // And the object list in the volume
6252             //
6253
6254             if( ParentObjectInfo->VolumeCB->ObjectInfoListHead == NULL)
6255             {
6256
6257                 ParentObjectInfo->VolumeCB->ObjectInfoListHead = pObjectInfo;
6258             }
6259             else
6260             {
6261
6262                 ParentObjectInfo->VolumeCB->ObjectInfoListTail->ListEntry.fLink = (void *)pObjectInfo;
6263
6264                 pObjectInfo->ListEntry.bLink = (void *)ParentObjectInfo->VolumeCB->ObjectInfoListTail;
6265             }
6266
6267             ParentObjectInfo->VolumeCB->ObjectInfoListTail = pObjectInfo;
6268
6269             //
6270             // Indicate the object is in the hash tree and linked list in the volume
6271             //
6272
6273             SetFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE | AFS_OBJECT_INSERTED_VOLUME_LIST);
6274         }
6275
6276 try_exit:
6277
6278         NOTHING;
6279     }
6280
6281     return pObjectInfo;
6282 }
6283
6284 LONG
6285 AFSObjectInfoIncrement( IN AFSObjectInfoCB *ObjectInfo,
6286                         IN LONG Reason)
6287 {
6288
6289     LONG lCount;
6290
6291     if ( ObjectInfo->ObjectReferenceCount == 0)
6292     {
6293
6294         AFSAcquireExcl( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6295                         TRUE);
6296
6297         lCount = InterlockedIncrement( &ObjectInfo->ObjectReferenceCount);
6298     }
6299     else
6300     {
6301
6302         AFSAcquireShared( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6303                           TRUE);
6304
6305         lCount = InterlockedIncrement( &ObjectInfo->ObjectReferenceCount);
6306
6307         if ( lCount == 1)
6308         {
6309
6310             AFSReleaseResource( &ObjectInfo->NonPagedInfo->ObjectInfoLock);
6311
6312             AFSAcquireExcl( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6313                             TRUE);
6314         }
6315     }
6316
6317     InterlockedIncrement( &ObjectInfo->ObjectReferences[ Reason]);
6318
6319     AFSReleaseResource( &ObjectInfo->NonPagedInfo->ObjectInfoLock);
6320
6321     return lCount;
6322 }
6323
6324 LONG
6325 AFSObjectInfoDecrement( IN AFSObjectInfoCB *ObjectInfo,
6326                         IN LONG Reason)
6327 {
6328
6329     LONG lCount, lCount2;
6330
6331     AFSAcquireShared( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6332                       TRUE);
6333
6334     lCount = InterlockedDecrement( &ObjectInfo->ObjectReferenceCount);
6335
6336     if ( lCount == 0)
6337     {
6338
6339         lCount = InterlockedIncrement( &ObjectInfo->ObjectReferenceCount);
6340
6341         AFSReleaseResource(&ObjectInfo->NonPagedInfo->ObjectInfoLock);
6342
6343         AFSAcquireExcl( &ObjectInfo->NonPagedInfo->ObjectInfoLock,
6344                         TRUE);
6345
6346         lCount = InterlockedDecrement( &ObjectInfo->ObjectReferenceCount);
6347     }
6348
6349     lCount2 = InterlockedDecrement( &ObjectInfo->ObjectReferences[ Reason]);
6350
6351     ASSERT( lCount2 >= 0);
6352
6353     AFSReleaseResource( &ObjectInfo->NonPagedInfo->ObjectInfoLock);
6354
6355     return lCount;
6356 }
6357
6358 AFSObjectInfoCB *
6359 AFSFindObjectInfo( IN AFSVolumeCB *VolumeCB,
6360                    IN AFSFileID   *FileId,
6361                    IN BOOLEAN      bUpdateLastUse)
6362 {
6363     DWORD            ntStatus = STATUS_SUCCESS;
6364     ULONGLONG        ullIndex;
6365     AFSObjectInfoCB *pObjectInfo = NULL;
6366     LONG             lCount;
6367
6368     ullIndex = AFSCreateLowIndex( FileId);
6369
6370     AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
6371                       TRUE);
6372
6373     if ( AFSIsEqualFID( &VolumeCB->ObjectInformation.FileId, FileId))
6374     {
6375
6376         pObjectInfo = &VolumeCB->ObjectInformation;
6377     }
6378     else
6379     {
6380
6381         ntStatus = AFSLocateHashEntry( VolumeCB->ObjectInfoTree.TreeHead,
6382                                        ullIndex,
6383                                        (AFSBTreeEntry **)&pObjectInfo);
6384     }
6385
6386     if ( NT_SUCCESS( ntStatus)) {
6387
6388         lCount = AFSObjectInfoIncrement( pObjectInfo,
6389                                          AFS_OBJECT_REFERENCE_FIND);
6390
6391         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6392                       AFS_TRACE_LEVEL_VERBOSE,
6393                       "AFSFindObjectInfo Decrement count on object %p Cnt %d\n",
6394                       pObjectInfo,
6395                       lCount));
6396
6397         if ( bUpdateLastUse)
6398         {
6399
6400             KeQueryTickCount( &pObjectInfo->LastAccessCount);
6401         }
6402     }
6403
6404     AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
6405
6406     return pObjectInfo;
6407 }
6408
6409 void
6410 AFSReleaseObjectInfo( IN AFSObjectInfoCB **ppObjectInfo)
6411 {
6412     LONG lCount;
6413
6414     lCount = AFSObjectInfoDecrement( *ppObjectInfo,
6415                                      AFS_OBJECT_REFERENCE_FIND);
6416
6417     AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6418                   AFS_TRACE_LEVEL_VERBOSE,
6419                   "AFSReleaseObjectInfo Decrement count on object %p Cnt %d\n",
6420                   *ppObjectInfo,
6421                   lCount));
6422
6423     *ppObjectInfo = NULL;
6424 }
6425
6426 void
6427 AFSDeleteObjectInfo( IN AFSObjectInfoCB **ppObjectInfo)
6428 {
6429     BOOLEAN bAcquiredTreeLock = FALSE;
6430     AFSObjectInfoCB *pObjectInfo = NULL;
6431     AFSVolumeCB * pVolume = NULL;
6432     BOOLEAN bHeldInService;
6433     AFSObjectInfoCB * pParentObjectInfo = NULL;
6434     AFSFileID FileId;
6435     LONG lCount;
6436
6437     __Enter
6438     {
6439         if ( BooleanFlagOn( (*ppObjectInfo)->Flags, AFS_OBJECT_ROOT_VOLUME))
6440         {
6441
6442             //
6443             // AFSDeleteObjectInfo should never be called on the ObjectInformationCB
6444             // embedded in the VolumeCB.
6445             //
6446
6447             ASSERT( FALSE);
6448
6449             return;
6450         }
6451
6452         pVolume = (*ppObjectInfo)->VolumeCB;
6453
6454         if( !ExIsResourceAcquiredExclusiveLite( pVolume->ObjectInfoTree.TreeLock))
6455         {
6456
6457             ASSERT( !ExIsResourceAcquiredLite( pVolume->ObjectInfoTree.TreeLock));
6458
6459             AFSAcquireExcl( pVolume->ObjectInfoTree.TreeLock,
6460                             TRUE);
6461
6462             bAcquiredTreeLock = TRUE;
6463         }
6464
6465         for ( lCount = 0; lCount < AFS_OBJECT_REFERENCE_MAX; lCount++)
6466         {
6467
6468             ASSERT( (*ppObjectInfo)->ObjectReferences[ lCount] >= 0);
6469         }
6470
6471         ASSERT( (*ppObjectInfo)->ObjectReferenceCount == 0);
6472
6473         pObjectInfo = (AFSObjectInfoCB *) InterlockedCompareExchangePointer( (PVOID *)ppObjectInfo,
6474                                                                              NULL,
6475                                                                              *ppObjectInfo);
6476
6477         if ( pObjectInfo == NULL)
6478         {
6479
6480             try_return( NOTHING);
6481         }
6482
6483         ASSERT( *ppObjectInfo == NULL);
6484
6485         if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_PARENT_FID))
6486         {
6487
6488             pParentObjectInfo = AFSFindObjectInfo( pVolume,
6489                                                    &pObjectInfo->ParentFileId,
6490                                                    FALSE);
6491
6492             if( pParentObjectInfo != NULL)
6493             {
6494
6495                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_PARENT_FID);
6496
6497                 AFSAcquireShared( pParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
6498                                   TRUE);
6499
6500                 lCount = AFSObjectInfoDecrement( pParentObjectInfo,
6501                                                  AFS_OBJECT_REFERENCE_CHILD);
6502
6503                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
6504                               AFS_TRACE_LEVEL_VERBOSE,
6505                               "AFSDeleteObjectInfo Decrement count on parent object %p Cnt %d\n",
6506                               pParentObjectInfo,
6507                               lCount));
6508
6509                 AFSReleaseResource( pParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
6510
6511                 AFSReleaseObjectInfo( &pParentObjectInfo);
6512             }
6513         }
6514
6515         //
6516         // Remove it from the tree and list if it was inserted
6517         //
6518
6519         if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
6520         {
6521
6522             AFSRemoveHashEntry( &pVolume->ObjectInfoTree.TreeHead,
6523                                 &pObjectInfo->TreeEntry);
6524         }
6525
6526         if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_VOLUME_LIST))
6527         {
6528
6529             if( pObjectInfo->ListEntry.fLink == NULL)
6530             {
6531
6532                 pVolume->ObjectInfoListTail = (AFSObjectInfoCB *)pObjectInfo->ListEntry.bLink;
6533
6534                 if( pVolume->ObjectInfoListTail != NULL)
6535                 {
6536
6537                     pVolume->ObjectInfoListTail->ListEntry.fLink = NULL;
6538                 }
6539             }
6540             else
6541             {
6542
6543                 ((AFSObjectInfoCB *)(pObjectInfo->ListEntry.fLink))->ListEntry.bLink = pObjectInfo->ListEntry.bLink;
6544             }
6545
6546             if( pObjectInfo->ListEntry.bLink == NULL)
6547             {
6548
6549                 pVolume->ObjectInfoListHead = (AFSObjectInfoCB *)pObjectInfo->ListEntry.fLink;
6550
6551                 if( pVolume->ObjectInfoListHead != NULL)
6552                 {
6553
6554                     pVolume->ObjectInfoListHead->ListEntry.bLink = NULL;
6555                 }
6556             }
6557             else
6558             {
6559
6560                 ((AFSObjectInfoCB *)(pObjectInfo->ListEntry.bLink))->ListEntry.fLink = pObjectInfo->ListEntry.fLink;
6561             }
6562         }
6563
6564         bHeldInService = BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE);
6565
6566         if( bHeldInService)
6567         {
6568
6569             FileId = pObjectInfo->FileId;
6570         }
6571
6572         ASSERT( pObjectInfo->ObjectReferenceCount == 0);
6573
6574         ExDeleteResourceLite( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
6575
6576         ExDeleteResourceLite( &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock);
6577
6578         AFSExFreePoolWithTag( pObjectInfo->NonPagedInfo, AFS_NP_OBJECT_INFO_TAG);
6579
6580         AFSExFreePoolWithTag( pObjectInfo, AFS_OBJECT_INFO_TAG);
6581
6582 try_exit:
6583
6584         if( bAcquiredTreeLock)
6585         {
6586
6587             AFSReleaseResource( pVolume->ObjectInfoTree.TreeLock);
6588         }
6589
6590         //
6591         // Release the fid in the service
6592         //
6593
6594         if( bHeldInService)
6595         {
6596
6597             AFSReleaseFid( &FileId);
6598         }
6599     }
6600
6601     return;
6602 }
6603
6604 NTSTATUS
6605 AFSEvaluateRootEntry( IN AFSDirectoryCB *DirectoryCB,
6606                       OUT AFSDirectoryCB **TargetDirEntry)
6607 {
6608
6609     NTSTATUS ntStatus = STATUS_SUCCESS;
6610     AFSDirEnumEntry *pDirEntry = NULL;
6611     UNICODE_STRING uniFullPathName = {0};
6612     AFSNameArrayHdr    *pNameArray = NULL;
6613     AFSVolumeCB *pVolumeCB = NULL;
6614     LONG VolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6615     AFSVolumeCB *pNewVolumeCB = NULL;
6616     LONG NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6617     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
6618     AFSDirectoryCB *pNewParentDirEntry = NULL;
6619     WCHAR *pwchBuffer = NULL;
6620     UNICODE_STRING uniComponentName, uniRemainingPath, uniParsedName;
6621     ULONG ulNameDifference = 0;
6622     GUID    stAuthGroup;
6623     LONG lCount;
6624
6625     __Enter
6626     {
6627
6628         ntStatus = AFSRetrieveValidAuthGroup( NULL,
6629                                               DirectoryCB->ObjectInformation,
6630                                               FALSE,
6631                                               &stAuthGroup);
6632
6633         if( !NT_SUCCESS( ntStatus))
6634         {
6635             try_return( ntStatus);
6636         }
6637
6638         //
6639         // Retrieve a target name for the entry
6640         //
6641
6642         AFSAcquireShared( &DirectoryCB->NonPaged->Lock,
6643                           TRUE);
6644
6645         if( DirectoryCB->NameInformation.TargetName.Length == 0)
6646         {
6647
6648             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6649
6650             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
6651                                               &stAuthGroup,
6652                                               FALSE,
6653                                               &pDirEntry);
6654
6655             if( !NT_SUCCESS( ntStatus) ||
6656                 pDirEntry->TargetNameLength == 0)
6657             {
6658
6659                 if( pDirEntry != NULL)
6660                 {
6661
6662                     ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
6663                 }
6664
6665                 try_return( ntStatus);
6666             }
6667
6668             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
6669                             TRUE);
6670
6671             if( DirectoryCB->NameInformation.TargetName.Length == 0)
6672             {
6673
6674                 //
6675                 // Update the target name
6676                 //
6677
6678                 ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
6679                                                 &DirectoryCB->Flags,
6680                                                 (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
6681                                                 (USHORT)pDirEntry->TargetNameLength);
6682
6683                 if( !NT_SUCCESS( ntStatus))
6684                 {
6685
6686                     AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6687
6688                     try_return( ntStatus);
6689                 }
6690             }
6691
6692             AFSConvertToShared( &DirectoryCB->NonPaged->Lock);
6693         }
6694
6695         //
6696         // Need to pass the full path in for parsing.
6697         //
6698
6699         uniFullPathName.Length = 0;
6700         uniFullPathName.MaximumLength = DirectoryCB->NameInformation.TargetName.Length;
6701
6702         uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
6703                                                                     uniFullPathName.MaximumLength,
6704                                                                     AFS_NAME_BUFFER_EIGHT_TAG);
6705
6706         if( uniFullPathName.Buffer == NULL)
6707         {
6708
6709             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6710
6711             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6712         }
6713
6714         pwchBuffer = uniFullPathName.Buffer;
6715
6716         RtlZeroMemory( uniFullPathName.Buffer,
6717                        uniFullPathName.MaximumLength);
6718
6719         RtlCopyMemory( uniFullPathName.Buffer,
6720                        DirectoryCB->NameInformation.TargetName.Buffer,
6721                        DirectoryCB->NameInformation.TargetName.Length);
6722
6723         uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6724
6725         //
6726         // This name should begin with the \afs server so parse it off and chech it
6727         //
6728
6729         FsRtlDissectName( uniFullPathName,
6730                           &uniComponentName,
6731                           &uniRemainingPath);
6732
6733         if( RtlCompareUnicodeString( &uniComponentName,
6734                                      &AFSServerName,
6735                                      TRUE) != 0)
6736         {
6737
6738             //
6739             // Try evaluating the full path
6740             //
6741
6742             uniFullPathName.Buffer = pwchBuffer;
6743
6744             uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6745
6746             uniFullPathName.MaximumLength = uniFullPathName.Length;
6747         }
6748         else
6749         {
6750
6751             uniFullPathName = uniRemainingPath;
6752         }
6753
6754         uniParsedName = uniFullPathName;
6755
6756         ulNameDifference = (ULONG)(uniFullPathName.Length > 0 ? ((char *)uniFullPathName.Buffer - (char *)pwchBuffer) : 0);
6757
6758         AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6759
6760         //
6761         // Our name array
6762         //
6763
6764         pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
6765                                        0);
6766
6767         if( pNameArray == NULL)
6768         {
6769
6770             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6771         }
6772
6773         pVolumeCB = AFSGlobalRoot;
6774
6775         pParentDirEntry = AFSGlobalRoot->DirectoryCB;
6776
6777         VolumeReferenceReason = AFS_VOLUME_REFERENCE_EVAL_ROOT;
6778
6779         lCount = AFSVolumeIncrement( pVolumeCB,
6780                                      VolumeReferenceReason);
6781
6782         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6783                       AFS_TRACE_LEVEL_VERBOSE,
6784                       "AFSEvaluateRootEntry Increment count on volume %p Reason %u Cnt %d\n",
6785                       pVolumeCB,
6786                       VolumeReferenceReason,
6787                       lCount));
6788
6789         lCount = InterlockedIncrement( &pParentDirEntry->DirOpenReferenceCount);
6790
6791         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6792                       AFS_TRACE_LEVEL_VERBOSE,
6793                       "AFSEvaluateRootEntry Increment count on %wZ DE %p Ccb %p Cnt %d\n",
6794                       &pParentDirEntry->NameInformation.FileName,
6795                       pParentDirEntry,
6796                       NULL,
6797                       lCount));
6798
6799         ntStatus = AFSLocateNameEntry( NULL,
6800                                        NULL,
6801                                        &uniFullPathName,
6802                                        &uniParsedName,
6803                                        pNameArray,
6804                                        0,
6805                                        pVolumeCB,
6806                                        pParentDirEntry,
6807                                        &pNewVolumeCB,
6808                                        &VolumeReferenceReason,
6809                                        &pNewParentDirEntry,
6810                                        &pDirectoryEntry,
6811                                        NULL);
6812
6813         if ( pNewVolumeCB != NULL)
6814         {
6815             //
6816             // AFSLocateNameEntry returns pNewVolumeCB with a reference held
6817             // even if pVolumeCB == pNewVolumeCB.  It is always safe to release
6818             // the reference on pVolumeCB that was held prior to the call.
6819             // If pVolumeCB == pNewVolumeCB, the reference from AFSLocateNameEntry
6820             // will be released second.
6821             //
6822
6823             lCount = AFSVolumeDecrement( pVolumeCB,
6824                                          VolumeReferenceReason);
6825
6826             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6827                           AFS_TRACE_LEVEL_VERBOSE,
6828                           "AFSEvaluateRootEntry Decrement count on volume %p Reason %u Cnt %d\n",
6829                           pVolumeCB,
6830                           VolumeReferenceReason,
6831                           lCount));
6832
6833             pVolumeCB = pNewVolumeCB;
6834
6835             pNewVolumeCB = NULL;
6836
6837             VolumeReferenceReason = NewVolumeReferenceReason;
6838
6839             NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
6840         }
6841
6842         //
6843         // AFSLocateNameEntry does not alter the reference count of
6844         // pParentDirectoryCB and it returns pNewParentDirectoryCB with
6845         // a reference held.
6846         //
6847
6848         lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6849
6850         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6851                       AFS_TRACE_LEVEL_VERBOSE,
6852                       "AFSEvaluateRootEntry DecrementX count on %wZ DE %p Cnt %d\n",
6853                       &pParentDirEntry->NameInformation.FileName,
6854                       pParentDirEntry,
6855                       lCount));
6856
6857         pParentDirEntry = pNewParentDirEntry;
6858
6859         pNewParentDirEntry = NULL;
6860
6861         if( !NT_SUCCESS( ntStatus) ||
6862             ntStatus == STATUS_REPARSE)
6863         {
6864
6865             pVolumeCB = NULL;
6866
6867             try_return( ntStatus);
6868         }
6869
6870         //
6871         // Pass back the target dir entry for this request
6872         // The caller must release the DirOpenReferenceCount
6873         //
6874
6875         *TargetDirEntry = pDirectoryEntry;
6876
6877         pDirectoryEntry = NULL;
6878
6879 try_exit:
6880
6881         if( pDirectoryEntry != NULL)
6882         {
6883
6884             lCount = InterlockedDecrement( &pDirectoryEntry->DirOpenReferenceCount);
6885
6886             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6887                           AFS_TRACE_LEVEL_VERBOSE,
6888                           "AFSEvaluateRootEntry Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6889                           &pDirectoryEntry->NameInformation.FileName,
6890                           pDirectoryEntry,
6891                           NULL,
6892                           lCount));
6893
6894             ASSERT( lCount >= 0);
6895         }
6896
6897         if ( pParentDirEntry != NULL)
6898         {
6899
6900             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
6901
6902             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6903                           AFS_TRACE_LEVEL_VERBOSE,
6904                           "AFSEvaluateRootEntry Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
6905                           &pParentDirEntry->NameInformation.FileName,
6906                           pParentDirEntry,
6907                           NULL,
6908                           lCount));
6909
6910             ASSERT( lCount >= 0);
6911         }
6912
6913         if( pDirEntry != NULL)
6914         {
6915
6916             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
6917         }
6918
6919         if( pVolumeCB != NULL)
6920         {
6921
6922             lCount = AFSVolumeDecrement( pVolumeCB,
6923                                          VolumeReferenceReason);
6924
6925             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6926                           AFS_TRACE_LEVEL_VERBOSE,
6927                           "AFSEvaluateRootEntry Decrement2 count on volume %p Reason %u Cnt %d\n",
6928                           pVolumeCB,
6929                           VolumeReferenceReason,
6930                           lCount));
6931         }
6932
6933         if( pNameArray != NULL)
6934         {
6935
6936             AFSFreeNameArray( pNameArray);
6937         }
6938
6939         if( pwchBuffer != NULL)
6940         {
6941
6942             //
6943             // Always free the buffer that we allocated as AFSLocateNameEntry
6944             // will not free it.  If uniFullPathName.Buffer was allocated by
6945             // AFSLocateNameEntry, then we must free that as well.
6946             // Check that the uniFullPathName.Buffer in the string is not the same
6947             // offset by the length of the server name
6948             //
6949
6950             if( uniFullPathName.Length > 0 &&
6951                 pwchBuffer != (WCHAR *)((char *)uniFullPathName.Buffer - ulNameDifference))
6952             {
6953
6954                 AFSExFreePoolWithTag( uniFullPathName.Buffer, 0);
6955             }
6956
6957             AFSExFreePoolWithTag( pwchBuffer, 0);
6958         }
6959     }
6960
6961     return ntStatus;
6962 }
6963
6964 NTSTATUS
6965 AFSCleanupFcb( IN AFSFcb *Fcb,
6966                IN BOOLEAN ForceFlush)
6967 {
6968
6969     NTSTATUS ntStatus = STATUS_SUCCESS;
6970     AFSDeviceExt *pRDRDeviceExt = NULL, *pControlDeviceExt = NULL;
6971     LARGE_INTEGER liTime;
6972     IO_STATUS_BLOCK stIoStatus;
6973
6974     __Enter
6975     {
6976
6977         pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
6978
6979         pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
6980
6981         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
6982         {
6983
6984             if( !BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) &&
6985                 !BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
6986             {
6987
6988                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
6989                               AFS_TRACE_LEVEL_VERBOSE,
6990                               "AFSCleanupEntry Acquiring Fcb lock %p EXCL %08lX\n",
6991                               &Fcb->NPFcb->Resource,
6992                               PsGetCurrentThread()));
6993
6994                 AFSAcquireExcl( &Fcb->NPFcb->Resource,
6995                                   TRUE);
6996
6997                 if( Fcb->OpenReferenceCount > 0)
6998                 {
6999
7000                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7001                                   AFS_TRACE_LEVEL_VERBOSE,
7002                                   "AFSCleanupEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
7003                                   &Fcb->NPFcb->SectionObjectResource,
7004                                   PsGetCurrentThread()));
7005
7006                     AFSAcquireExcl( &Fcb->NPFcb->SectionObjectResource,
7007                                     TRUE);
7008
7009                     __try
7010                     {
7011
7012                         CcFlushCache( &Fcb->NPFcb->SectionObjectPointers,
7013                                       NULL,
7014                                       0,
7015                                       &stIoStatus);
7016
7017                         if( !NT_SUCCESS( stIoStatus.Status))
7018                         {
7019
7020                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7021                                           AFS_TRACE_LEVEL_ERROR,
7022                                           "AFSCleanupFcb CcFlushCache [1] failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
7023                                           Fcb->ObjectInformation->FileId.Cell,
7024                                           Fcb->ObjectInformation->FileId.Volume,
7025                                           Fcb->ObjectInformation->FileId.Vnode,
7026                                           Fcb->ObjectInformation->FileId.Unique,
7027                                           stIoStatus.Status,
7028                                           stIoStatus.Information));
7029
7030                             ntStatus = stIoStatus.Status;
7031                         }
7032
7033                         if (  Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
7034                         {
7035
7036                             if ( !CcPurgeCacheSection( &Fcb->NPFcb->SectionObjectPointers,
7037                                                        NULL,
7038                                                        0,
7039                                                        FALSE))
7040                             {
7041
7042                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7043                                               AFS_TRACE_LEVEL_WARNING,
7044                                               "AFSCleanupFcb CcPurgeCacheSection [1] failure FID %08lX-%08lX-%08lX-%08lX\n",
7045                                               Fcb->ObjectInformation->FileId.Cell,
7046                                               Fcb->ObjectInformation->FileId.Volume,
7047                                               Fcb->ObjectInformation->FileId.Vnode,
7048                                               Fcb->ObjectInformation->FileId.Unique));
7049
7050                                 SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7051                             }
7052                         }
7053                     }
7054                     __except( EXCEPTION_EXECUTE_HANDLER)
7055                     {
7056
7057                         ntStatus = GetExceptionCode();
7058
7059                         AFSDbgTrace(( 0,
7060                                       0,
7061                                       "EXCEPTION - AFSCleanupFcb Cc [1] FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
7062                                       Fcb->ObjectInformation->FileId.Cell,
7063                                       Fcb->ObjectInformation->FileId.Volume,
7064                                       Fcb->ObjectInformation->FileId.Vnode,
7065                                       Fcb->ObjectInformation->FileId.Unique,
7066                                       ntStatus));
7067
7068                         SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7069                     }
7070
7071                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7072                                   AFS_TRACE_LEVEL_VERBOSE,
7073                                   "AFSCleanupFcb Releasing Fcb SectionObject lock %p EXCL %08lX\n",
7074                                   &Fcb->NPFcb->SectionObjectResource,
7075                                   PsGetCurrentThread()));
7076
7077                     AFSReleaseResource( &Fcb->NPFcb->SectionObjectResource);
7078                 }
7079
7080                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7081                               AFS_TRACE_LEVEL_VERBOSE,
7082                               "AFSCleanupEntry Releasing Fcb lock %p EXCL %08lX\n",
7083                               &Fcb->NPFcb->Resource,
7084                               PsGetCurrentThread()));
7085
7086                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7087
7088                 if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7089                 {
7090                     //
7091                     // Wait for any currently running flush or release requests to complete
7092                     //
7093
7094                     AFSWaitOnQueuedFlushes( Fcb);
7095
7096                     //
7097                     // Now perform another flush on the file
7098                     //
7099
7100                     if( !NT_SUCCESS( AFSFlushExtents( Fcb,
7101                                                       NULL)))
7102                     {
7103
7104                         AFSReleaseExtentsWithFlush( Fcb,
7105                                                     NULL,
7106                                                     TRUE);
7107                     }
7108                 }
7109             }
7110
7111             if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7112             {
7113
7114                 if( Fcb->OpenReferenceCount == 0 ||
7115                     BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
7116                     BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7117                 {
7118
7119                     AFSTearDownFcbExtents( Fcb,
7120                                            NULL);
7121                 }
7122             }
7123
7124             try_return( ntStatus);
7125         }
7126
7127         KeQueryTickCount( &liTime);
7128
7129         if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7130         {
7131             //
7132             // First up are there dirty extents in the cache to flush?
7133             //
7134
7135             if( BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
7136                 BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7137             {
7138
7139                 //
7140                 // The file has been marked as invalid.  Dump it
7141                 //
7142
7143                 AFSTearDownFcbExtents( Fcb,
7144                                        NULL);
7145             }
7146             else if( ForceFlush ||
7147                      ( ( Fcb->Specific.File.ExtentsDirtyCount ||
7148                          Fcb->Specific.File.ExtentCount) &&
7149                        (liTime.QuadPart - Fcb->Specific.File.LastServerFlush.QuadPart)
7150                        >= pControlDeviceExt->Specific.Control.FcbFlushTimeCount.QuadPart))
7151             {
7152
7153                 if( !NT_SUCCESS( AFSFlushExtents( Fcb,
7154                                                   NULL)) &&
7155                     Fcb->OpenReferenceCount == 0)
7156                 {
7157
7158                     AFSReleaseExtentsWithFlush( Fcb,
7159                                                 NULL,
7160                                                 TRUE);
7161                 }
7162             }
7163         }
7164
7165         //
7166         // If there are extents and they haven't been used recently *and*
7167         // are not being used
7168         //
7169
7170         if( ( ForceFlush ||
7171               ( 0 != Fcb->Specific.File.ExtentCount &&
7172                 0 != Fcb->Specific.File.LastExtentAccess.QuadPart &&
7173                 (liTime.QuadPart - Fcb->Specific.File.LastExtentAccess.QuadPart) >=
7174                                         (AFS_SERVER_PURGE_SLEEP * pControlDeviceExt->Specific.Control.FcbPurgeTimeCount.QuadPart))))
7175         {
7176
7177             AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7178                           AFS_TRACE_LEVEL_VERBOSE,
7179                           "AFSCleanupFcb Acquiring Fcb lock %p EXCL %08lX\n",
7180                           &Fcb->NPFcb->Resource,
7181                           PsGetCurrentThread()));
7182
7183             if ( AFSAcquireExcl( &Fcb->NPFcb->Resource, ForceFlush) == FALSE)
7184             {
7185
7186                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7187                               AFS_TRACE_LEVEL_VERBOSE,
7188                               "AFSCleanupFcb Failed to Acquire Fcb lock %p EXCL %08lX\n",
7189                               &Fcb->NPFcb->Resource,
7190                               PsGetCurrentThread()));
7191
7192                 try_return( ntStatus = STATUS_RETRY);
7193             }
7194
7195             AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7196                           AFS_TRACE_LEVEL_VERBOSE,
7197                           "AFSCleanupFcb Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
7198                           &Fcb->NPFcb->SectionObjectResource,
7199                           PsGetCurrentThread()));
7200
7201             if ( AFSAcquireExcl( &Fcb->NPFcb->SectionObjectResource, ForceFlush))
7202             {
7203
7204                 __try
7205                 {
7206
7207                     CcFlushCache( &Fcb->NPFcb->SectionObjectPointers,
7208                                   NULL,
7209                                   0,
7210                                   &stIoStatus);
7211
7212                     if( !NT_SUCCESS( stIoStatus.Status))
7213                     {
7214
7215                         AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7216                                       AFS_TRACE_LEVEL_ERROR,
7217                                       "AFSCleanupFcb CcFlushCache [2] failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
7218                                       Fcb->ObjectInformation->FileId.Cell,
7219                                       Fcb->ObjectInformation->FileId.Volume,
7220                                       Fcb->ObjectInformation->FileId.Vnode,
7221                                       Fcb->ObjectInformation->FileId.Unique,
7222                                       stIoStatus.Status,
7223                                       stIoStatus.Information));
7224
7225                         ntStatus = stIoStatus.Status;
7226                     }
7227
7228                     if( ForceFlush &&
7229                         Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
7230                     {
7231
7232                         if ( !CcPurgeCacheSection( &Fcb->NPFcb->SectionObjectPointers,
7233                                                    NULL,
7234                                                    0,
7235                                                    FALSE))
7236                         {
7237
7238                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
7239                                           AFS_TRACE_LEVEL_WARNING,
7240                                           "AFSCleanupFcb CcPurgeCacheSection [2] failure FID %08lX-%08lX-%08lX-%08lX\n",
7241                                           Fcb->ObjectInformation->FileId.Cell,
7242                                           Fcb->ObjectInformation->FileId.Volume,
7243                                           Fcb->ObjectInformation->FileId.Vnode,
7244                                           Fcb->ObjectInformation->FileId.Unique));
7245
7246                             SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7247                         }
7248                     }
7249                 }
7250                 __except( EXCEPTION_EXECUTE_HANDLER)
7251                 {
7252
7253                     ntStatus = GetExceptionCode();
7254
7255                     AFSDbgTrace(( 0,
7256                                   0,
7257                                   "EXCEPTION - AFSCleanupFcb Cc [2] FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
7258                                   Fcb->ObjectInformation->FileId.Cell,
7259                                   Fcb->ObjectInformation->FileId.Volume,
7260                                   Fcb->ObjectInformation->FileId.Vnode,
7261                                   Fcb->ObjectInformation->FileId.Unique,
7262                                   ntStatus));
7263                 }
7264
7265                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7266                               AFS_TRACE_LEVEL_VERBOSE,
7267                               "AFSCleanupFcb Releasing Fcb SectionObject lock %p EXCL %08lX\n",
7268                               &Fcb->NPFcb->SectionObjectResource,
7269                               PsGetCurrentThread()));
7270
7271                 AFSReleaseResource( &Fcb->NPFcb->SectionObjectResource);
7272
7273                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7274                               AFS_TRACE_LEVEL_VERBOSE,
7275                               "AFSCleanupFcb Releasing Fcb lock %p EXCL %08lX\n",
7276                               &Fcb->NPFcb->Resource,
7277                               PsGetCurrentThread()));
7278
7279                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7280
7281                 if( !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
7282                 {
7283
7284                     if( Fcb->OpenReferenceCount <= 0)
7285                     {
7286
7287                         //
7288                         // Tear em down we'll not be needing them again
7289                         //
7290
7291                         AFSTearDownFcbExtents( Fcb,
7292                                                NULL);
7293                     }
7294                 }
7295             }
7296             else
7297             {
7298
7299                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
7300                               AFS_TRACE_LEVEL_VERBOSE,
7301                               "AFSCleanupFcb Failed to Acquire Fcb SectionObject lock %p EXCL %08lX\n",
7302                               &Fcb->NPFcb->SectionObjectResource,
7303                               PsGetCurrentThread()));
7304
7305                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
7306                               AFS_TRACE_LEVEL_VERBOSE,
7307                               "AFSCleanupFcb Releasing Fcb lock %p EXCL %08lX\n",
7308                               &Fcb->NPFcb->Resource,
7309                               PsGetCurrentThread()));
7310
7311                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7312
7313                 ntStatus = STATUS_RETRY;
7314             }
7315         }
7316
7317 try_exit:
7318
7319         NOTHING;
7320     }
7321
7322     return ntStatus;
7323 }
7324
7325 NTSTATUS
7326 AFSUpdateDirEntryName( IN AFSDirectoryCB *DirectoryCB,
7327                        IN UNICODE_STRING *NewFileName)
7328 {
7329
7330     NTSTATUS ntStatus = STATUS_SUCCESS;
7331     WCHAR *pTmpBuffer = NULL;
7332
7333     __Enter
7334     {
7335
7336         if( NewFileName->Length > DirectoryCB->NameInformation.FileName.Length)
7337         {
7338
7339             if( BooleanFlagOn( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER))
7340             {
7341
7342                 AFSExFreePoolWithTag( DirectoryCB->NameInformation.FileName.Buffer, 0);
7343
7344                 ClearFlag( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER);
7345
7346                 DirectoryCB->NameInformation.FileName.Buffer = NULL;
7347             }
7348
7349             //
7350             // OK, we need to allocate a new name buffer
7351             //
7352
7353             pTmpBuffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
7354                                                             NewFileName->Length,
7355                                                             AFS_NAME_BUFFER_NINE_TAG);
7356
7357             if( pTmpBuffer == NULL)
7358             {
7359
7360                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
7361             }
7362
7363             DirectoryCB->NameInformation.FileName.Buffer = pTmpBuffer;
7364
7365             DirectoryCB->NameInformation.FileName.MaximumLength = NewFileName->Length;
7366
7367             SetFlag( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER);
7368         }
7369
7370         DirectoryCB->NameInformation.FileName.Length = NewFileName->Length;
7371
7372         RtlCopyMemory( DirectoryCB->NameInformation.FileName.Buffer,
7373                        NewFileName->Buffer,
7374                        NewFileName->Length);
7375
7376 try_exit:
7377
7378         NOTHING;
7379     }
7380
7381     return ntStatus;
7382 }
7383
7384 NTSTATUS
7385 AFSReadCacheFile( IN void *ReadBuffer,
7386                   IN LARGE_INTEGER *ReadOffset,
7387                   IN ULONG RequestedDataLength,
7388                   IN OUT PULONG BytesRead)
7389 {
7390
7391     NTSTATUS            ntStatus = STATUS_SUCCESS;
7392     PIRP                pIrp = NULL;
7393     KEVENT              kEvent;
7394     PIO_STACK_LOCATION  pIoStackLocation = NULL;
7395     DEVICE_OBJECT      *pTargetDeviceObject = NULL;
7396     FILE_OBJECT        *pCacheFileObject = NULL;
7397
7398     __Enter
7399     {
7400
7401         pCacheFileObject = AFSReferenceCacheFileObject();
7402
7403         if( pCacheFileObject == NULL)
7404         {
7405             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
7406         }
7407
7408         pTargetDeviceObject = IoGetRelatedDeviceObject( pCacheFileObject);
7409
7410         //
7411         // Initialize the event
7412         //
7413
7414         KeInitializeEvent( &kEvent,
7415                            SynchronizationEvent,
7416                            FALSE);
7417
7418         //
7419         // Allocate an irp for this request.  This could also come from a
7420         // private pool, for instance.
7421         //
7422
7423         pIrp = IoAllocateIrp( pTargetDeviceObject->StackSize,
7424                               FALSE);
7425
7426         if( pIrp == NULL)
7427         {
7428
7429             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
7430         }
7431
7432         //
7433         // Build the IRP's main body
7434         //
7435
7436         pIrp->UserBuffer = ReadBuffer;
7437
7438         pIrp->Tail.Overlay.Thread = PsGetCurrentThread();
7439         pIrp->RequestorMode = KernelMode;
7440         pIrp->Flags |= IRP_READ_OPERATION;
7441
7442         //
7443         // Set up the I/O stack location.
7444         //
7445
7446         pIoStackLocation = IoGetNextIrpStackLocation( pIrp);
7447         pIoStackLocation->MajorFunction = IRP_MJ_READ;
7448         pIoStackLocation->DeviceObject = pTargetDeviceObject;
7449         pIoStackLocation->FileObject = pCacheFileObject;
7450         pIoStackLocation->Parameters.Read.Length = RequestedDataLength;
7451
7452         pIoStackLocation->Parameters.Read.ByteOffset.QuadPart = ReadOffset->QuadPart;
7453
7454         //
7455         // Set the completion routine.
7456         //
7457
7458         IoSetCompletionRoutine( pIrp,
7459                                 AFSIrpComplete,
7460                                 &kEvent,
7461                                 TRUE,
7462                                 TRUE,
7463                                 TRUE);
7464
7465         //
7466         // Send it to the FSD
7467         //
7468
7469         ntStatus = IoCallDriver( pTargetDeviceObject,
7470                                  pIrp);
7471
7472         if( NT_SUCCESS( ntStatus))
7473         {
7474
7475             //
7476             // Wait for the I/O
7477             //
7478
7479             ntStatus = KeWaitForSingleObject( &kEvent,
7480                                               Executive,
7481                                               KernelMode,
7482                                               FALSE,
7483                                               0);
7484
7485             if( NT_SUCCESS( ntStatus))
7486             {
7487
7488                 ntStatus = pIrp->IoStatus.Status;
7489
7490                 *BytesRead = (ULONG)pIrp->IoStatus.Information;
7491             }
7492         }
7493
7494 try_exit:
7495
7496         if( pCacheFileObject != NULL)
7497         {
7498             AFSReleaseCacheFileObject( pCacheFileObject);
7499         }
7500
7501         if( pIrp != NULL)
7502         {
7503
7504             if( pIrp->MdlAddress != NULL)
7505             {
7506
7507                 if( FlagOn( pIrp->MdlAddress->MdlFlags, MDL_PAGES_LOCKED))
7508                 {
7509
7510                     MmUnlockPages( pIrp->MdlAddress);
7511                 }
7512
7513                 IoFreeMdl( pIrp->MdlAddress);
7514             }
7515
7516             pIrp->MdlAddress = NULL;
7517
7518             //
7519             // Free the Irp
7520             //
7521
7522             IoFreeIrp( pIrp);
7523         }
7524     }
7525
7526     return ntStatus;
7527 }
7528
7529 NTSTATUS
7530 AFSIrpComplete( IN PDEVICE_OBJECT DeviceObject,
7531                 IN PIRP           Irp,
7532                 IN PVOID          Context)
7533 {
7534
7535     UNREFERENCED_PARAMETER(Irp);
7536     UNREFERENCED_PARAMETER(DeviceObject);
7537     KEVENT *pEvent = (KEVENT *)Context;
7538
7539     KeSetEvent( pEvent,
7540                 0,
7541                 FALSE);
7542
7543     return STATUS_MORE_PROCESSING_REQUIRED;
7544 }
7545
7546 BOOLEAN
7547 AFSIsDirectoryEmptyForDelete( IN AFSFcb *Fcb)
7548 {
7549
7550     BOOLEAN bIsEmpty = FALSE;
7551     AFSDirectoryCB *pDirEntry = NULL;
7552
7553     __Enter
7554     {
7555
7556         ASSERT( Fcb->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY);
7557
7558         AFSAcquireShared( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
7559                           TRUE);
7560
7561         bIsEmpty = TRUE;
7562
7563         if( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL)
7564         {
7565
7566             pDirEntry = Fcb->ObjectInformation->Specific.Directory.DirectoryNodeListHead;
7567
7568             while( pDirEntry != NULL)
7569             {
7570
7571                 if( !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_FAKE) &&
7572                     !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED))
7573                 {
7574
7575                     bIsEmpty = FALSE;
7576
7577                     break;
7578                 }
7579
7580                 pDirEntry = (AFSDirectoryCB *)pDirEntry->ListEntry.fLink;
7581             }
7582
7583         }
7584
7585         AFSReleaseResource( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
7586     }
7587
7588     return bIsEmpty;
7589 }
7590
7591 void
7592 AFSRemoveNameEntry( IN AFSObjectInfoCB *ParentObjectInfo,
7593                     IN AFSDirectoryCB *DirEntry)
7594 {
7595
7596     NTSTATUS ntStatus = STATUS_SUCCESS;
7597
7598     __Enter
7599     {
7600
7601         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
7602         {
7603
7604             AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7605                           AFS_TRACE_LEVEL_VERBOSE,
7606                           "AFSRemoveNameEntry DE %p for %wZ has NOT_IN flag set\n",
7607                           DirEntry,
7608                           &DirEntry->NameInformation.FileName));
7609
7610             try_return( ntStatus);
7611         }
7612
7613         ASSERT( ExIsResourceAcquiredExclusiveLite( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock));
7614
7615         //
7616         // Remove the entry from the parent tree
7617         //
7618
7619         AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7620                       AFS_TRACE_LEVEL_VERBOSE,
7621                       "AFSRemoveNameEntry DE %p for %wZ removing from case sensitive tree\n",
7622                       DirEntry,
7623                       &DirEntry->NameInformation.FileName));
7624
7625         AFSRemoveCaseSensitiveDirEntry( &ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
7626                                         DirEntry);
7627
7628         AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7629                       AFS_TRACE_LEVEL_VERBOSE,
7630                       "AFSRemoveNameEntry DE %p for %wZ removing from case insensitive tree\n",
7631                       DirEntry,
7632                       &DirEntry->NameInformation.FileName));
7633
7634         AFSRemoveCaseInsensitiveDirEntry( &ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
7635                                           DirEntry);
7636
7637         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME))
7638         {
7639
7640             //
7641             // From the short name tree
7642             //
7643
7644             AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7645                           AFS_TRACE_LEVEL_VERBOSE,
7646                           "AFSRemoveNameEntry DE %p for %wZ removing from shortname tree\n",
7647                           DirEntry,
7648                           &DirEntry->NameInformation.FileName));
7649
7650             AFSRemoveShortNameDirEntry( &ParentObjectInfo->Specific.Directory.ShortNameTree,
7651                                         DirEntry);
7652
7653             ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
7654         }
7655
7656         AFSDbgTrace(( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
7657                       AFS_TRACE_LEVEL_VERBOSE,
7658                       "AFSRemoveNameEntry DE %p for %wZ setting NOT_IN flag\n",
7659                       DirEntry,
7660                       &DirEntry->NameInformation.FileName));
7661
7662         SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
7663
7664         ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
7665
7666 try_exit:
7667
7668         NOTHING;
7669     }
7670
7671     return;
7672 }
7673
7674 LARGE_INTEGER
7675 AFSGetAuthenticationId()
7676 {
7677
7678     LARGE_INTEGER liAuthId = {0,0};
7679     NTSTATUS ntStatus = STATUS_SUCCESS;
7680     PACCESS_TOKEN hToken = NULL;
7681     PTOKEN_STATISTICS pTokenInfo = NULL;
7682     BOOLEAN bCopyOnOpen = FALSE;
7683     BOOLEAN bEffectiveOnly = FALSE;
7684     BOOLEAN bPrimaryToken = FALSE;
7685     SECURITY_IMPERSONATION_LEVEL stImpersonationLevel;
7686
7687     __Enter
7688     {
7689
7690         hToken = PsReferenceImpersonationToken( PsGetCurrentThread(),
7691                                                 &bCopyOnOpen,
7692                                                 &bEffectiveOnly,
7693                                                 &stImpersonationLevel);
7694
7695         if( hToken == NULL)
7696         {
7697
7698             hToken = PsReferencePrimaryToken( PsGetCurrentProcess());
7699
7700             if( hToken == NULL)
7701             {
7702
7703                 AFSDbgTrace(( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7704                               AFS_TRACE_LEVEL_ERROR,
7705                               "AFSGetAuthenticationId Failed to retrieve impersonation or primary token\n"));
7706
7707                 try_return( ntStatus);
7708             }
7709
7710             bPrimaryToken = TRUE;
7711         }
7712
7713         ntStatus = SeQueryInformationToken( hToken,
7714                                             TokenStatistics,
7715                                             (PVOID *)&pTokenInfo);
7716
7717         if( !NT_SUCCESS( ntStatus))
7718         {
7719
7720             AFSDbgTrace(( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7721                           AFS_TRACE_LEVEL_ERROR,
7722                           "AFSGetAuthenticationId Failed to retrieve information Status %08lX\n",
7723                           ntStatus));
7724
7725             try_return( ntStatus);
7726         }
7727
7728         liAuthId.HighPart = pTokenInfo->AuthenticationId.HighPart;
7729         liAuthId.LowPart = pTokenInfo->AuthenticationId.LowPart;
7730
7731         AFSDbgTrace(( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7732                       AFS_TRACE_LEVEL_VERBOSE,
7733                       "AFSGetAuthenticationId Successfully retrieved authentication ID %I64X\n",
7734                       liAuthId.QuadPart));
7735
7736 try_exit:
7737
7738         if( hToken != NULL)
7739         {
7740
7741             if( !bPrimaryToken)
7742             {
7743
7744                 PsDereferenceImpersonationToken( hToken);
7745             }
7746             else
7747             {
7748
7749                 PsDereferencePrimaryToken( hToken);
7750             }
7751         }
7752
7753         if( pTokenInfo != NULL)
7754         {
7755
7756             ExFreePool( pTokenInfo);    // Allocated by SeQueryInformationToken
7757         }
7758     }
7759
7760     return liAuthId;
7761 }
7762
7763 void
7764 AFSUnwindFileInfo( IN AFSFcb *Fcb,
7765                    IN AFSCcb *Ccb)
7766 {
7767
7768     UNREFERENCED_PARAMETER(Fcb);
7769     if( Ccb->FileUnwindInfo.FileAttributes != (ULONG)-1)
7770     {
7771         Fcb->ObjectInformation->FileAttributes = Ccb->FileUnwindInfo.FileAttributes;
7772     }
7773
7774     if( Ccb->FileUnwindInfo.CreationTime.QuadPart != (ULONGLONG)-1)
7775     {
7776         Fcb->ObjectInformation->CreationTime.QuadPart = Ccb->FileUnwindInfo.CreationTime.QuadPart;
7777     }
7778
7779     if( Ccb->FileUnwindInfo.LastAccessTime.QuadPart != (ULONGLONG)-1)
7780     {
7781         Fcb->ObjectInformation->LastAccessTime.QuadPart = Ccb->FileUnwindInfo.LastAccessTime.QuadPart;
7782     }
7783
7784     if( Ccb->FileUnwindInfo.LastWriteTime.QuadPart != (ULONGLONG)-1)
7785     {
7786         Fcb->ObjectInformation->LastWriteTime.QuadPart = Ccb->FileUnwindInfo.LastWriteTime.QuadPart;
7787     }
7788
7789     if( Ccb->FileUnwindInfo.ChangeTime.QuadPart != (ULONGLONG)-1)
7790     {
7791         Fcb->ObjectInformation->ChangeTime.QuadPart = Ccb->FileUnwindInfo.ChangeTime.QuadPart;
7792     }
7793
7794     return;
7795 }
7796
7797 BOOLEAN
7798 AFSValidateDirList( IN AFSObjectInfoCB *ObjectInfo)
7799 {
7800
7801     BOOLEAN bIsValid = TRUE;
7802     ULONG ulCount = 0;
7803     AFSDirectoryCB *pCurrentDirEntry = NULL, *pDirEntry = NULL;
7804
7805     pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
7806
7807     while( pCurrentDirEntry != NULL)
7808     {
7809
7810         if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_FAKE))
7811         {
7812             ulCount++;
7813
7814             if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
7815             {
7816
7817                 pDirEntry = NULL;
7818
7819                 AFSLocateCaseSensitiveDirEntry( ObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
7820                                                 (ULONG)pCurrentDirEntry->CaseSensitiveTreeEntry.HashIndex,
7821                                                 &pDirEntry);
7822
7823                 if( pDirEntry == NULL)
7824                 {
7825                     DbgBreakPoint();
7826                 }
7827             }
7828         }
7829
7830         pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
7831     }
7832
7833     if( ulCount != (ULONG) ObjectInfo->Specific.Directory.DirectoryNodeCount)
7834     {
7835
7836         AFSPrint("AFSValidateDirList Count off Calc: %d Stored: %d\n",
7837                   ulCount,
7838                   ObjectInfo->Specific.Directory.DirectoryNodeCount);
7839
7840         ObjectInfo->Specific.Directory.DirectoryNodeCount = ulCount;
7841
7842         bIsValid = FALSE;
7843     }
7844
7845     return bIsValid;
7846 }
7847
7848 PFILE_OBJECT
7849 AFSReferenceCacheFileObject()
7850 {
7851
7852     AFSDeviceExt       *pRdrDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
7853     FILE_OBJECT        *pCacheFileObject = NULL;
7854
7855     AFSAcquireShared( &pRdrDevExt->Specific.RDR.CacheFileLock,
7856                       TRUE);
7857
7858     pCacheFileObject = pRdrDevExt->Specific.RDR.CacheFileObject;
7859
7860     if( pCacheFileObject != NULL)
7861     {
7862         ObReferenceObject( pCacheFileObject);
7863     }
7864
7865     AFSReleaseResource( &pRdrDevExt->Specific.RDR.CacheFileLock);
7866
7867     return pCacheFileObject;
7868 }
7869
7870 void
7871 AFSReleaseCacheFileObject( IN PFILE_OBJECT CacheFileObject)
7872 {
7873
7874     ASSERT( CacheFileObject != NULL);
7875
7876     ObDereferenceObject( CacheFileObject);
7877
7878     return;
7879 }
7880
7881 NTSTATUS
7882 AFSInitializeLibrary( IN AFSLibraryInitCB *LibraryInit)
7883 {
7884
7885     NTSTATUS ntStatus = STATUS_SUCCESS;
7886     AFSDeviceExt *pControlDevExt = NULL;
7887     ULONG ulTimeIncrement = 0;
7888     LONG lCount;
7889
7890     __Enter
7891     {
7892
7893         AFSControlDeviceObject = LibraryInit->AFSControlDeviceObject;
7894
7895         AFSRDRDeviceObject = LibraryInit->AFSRDRDeviceObject;
7896
7897         AFSServerName = LibraryInit->AFSServerName;
7898
7899         AFSMountRootName = LibraryInit->AFSMountRootName;
7900
7901         AFSDebugFlags = LibraryInit->AFSDebugFlags;
7902
7903         //
7904         // Callbacks in the framework
7905         //
7906
7907         AFSProcessRequest = LibraryInit->AFSProcessRequest;
7908
7909         AFSDbgLogMsg = LibraryInit->AFSDbgLogMsg;
7910
7911         AFSDebugTraceFnc = AFSDbgLogMsg;
7912
7913         AFSAddConnectionEx = LibraryInit->AFSAddConnectionEx;
7914
7915         AFSExAllocatePoolWithTag = LibraryInit->AFSExAllocatePoolWithTag;
7916
7917         AFSExFreePoolWithTag = LibraryInit->AFSExFreePoolWithTag;
7918
7919         AFSDumpTraceFilesFnc = LibraryInit->AFSDumpTraceFiles;
7920
7921         AFSRetrieveAuthGroupFnc = LibraryInit->AFSRetrieveAuthGroup;
7922
7923         AFSLibCacheManagerCallbacks = LibraryInit->AFSCacheManagerCallbacks;
7924
7925         if( LibraryInit->AFSCacheBaseAddress != NULL)
7926         {
7927
7928             SetFlag( AFSLibControlFlags, AFS_REDIR_LIB_FLAGS_NONPERSISTENT_CACHE);
7929
7930             AFSLibCacheBaseAddress = LibraryInit->AFSCacheBaseAddress;
7931
7932             AFSLibCacheLength = LibraryInit->AFSCacheLength;
7933         }
7934
7935         //
7936         // Initialize some flush parameters
7937         //
7938
7939         pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
7940
7941         ulTimeIncrement = KeQueryTimeIncrement();
7942
7943         pControlDevExt->Specific.Control.ObjectLifeTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_OBJECT_LIFETIME / (ULONGLONG)ulTimeIncrement);
7944         pControlDevExt->Specific.Control.FcbPurgeTimeCount.QuadPart = AFS_SERVER_PURGE_DELAY;
7945         pControlDevExt->Specific.Control.FcbPurgeTimeCount.QuadPart /= ulTimeIncrement;
7946         pControlDevExt->Specific.Control.FcbFlushTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_SERVER_FLUSH_DELAY / (ULONGLONG)ulTimeIncrement);
7947         pControlDevExt->Specific.Control.ExtentRequestTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_EXTENT_REQUEST_TIME/(ULONGLONG)ulTimeIncrement);
7948
7949         //
7950         // Initialize the global root entry
7951         //
7952
7953         ntStatus = AFSInitVolume( NULL,
7954                                   &LibraryInit->GlobalRootFid,
7955                                   AFS_VOLUME_REFERENCE_GLOBAL_ROOT,
7956                                   &AFSGlobalRoot);
7957
7958         if( !NT_SUCCESS( ntStatus))
7959         {
7960
7961             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
7962                           AFS_TRACE_LEVEL_ERROR,
7963                           "AFSInitializeLibrary AFSInitVolume failure %08lX\n",
7964                           ntStatus));
7965
7966             try_return( ntStatus);
7967         }
7968
7969         ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
7970                                    AFSGlobalRoot);
7971
7972         if( !NT_SUCCESS( ntStatus))
7973         {
7974
7975             AFSDbgTrace(( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
7976                           AFS_TRACE_LEVEL_ERROR,
7977                           "AFSInitializeLibrary AFSInitRootFcb failure %08lX\n",
7978                           ntStatus));
7979
7980             lCount = AFSVolumeDecrement( AFSGlobalRoot,
7981                                          AFS_VOLUME_REFERENCE_GLOBAL_ROOT);
7982
7983             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
7984                           AFS_TRACE_LEVEL_VERBOSE,
7985                           "AFSInitializeLibrary Decrement count on volume %p Cnt %d\n",
7986                           AFSGlobalRoot,
7987                           lCount));
7988
7989             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
7990
7991             try_return( ntStatus);
7992         }
7993
7994         //
7995         // Update the node type code to AFS_ROOT_ALL
7996         //
7997
7998         AFSGlobalRoot->ObjectInformation.Fcb->Header.NodeTypeCode = AFS_ROOT_ALL;
7999
8000         SetFlag( AFSGlobalRoot->Flags, AFS_VOLUME_ACTIVE_GLOBAL_ROOT);
8001
8002         //
8003         // Invalidate all known volumes since contact with the service and therefore
8004         // the file server was lost.
8005         //
8006
8007         AFSInvalidateAllVolumes();
8008
8009         //
8010         // Drop the locks acquired above
8011         //
8012
8013         AFSInitVolumeWorker( AFSGlobalRoot);
8014
8015         lCount = AFSVolumeDecrement( AFSGlobalRoot,
8016                                      AFS_VOLUME_REFERENCE_GLOBAL_ROOT);
8017
8018         AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8019                       AFS_TRACE_LEVEL_VERBOSE,
8020                       "AFSInitializeLibrary Decrement count on volume %p Cnt %d\n",
8021                       AFSGlobalRoot,
8022                       lCount));
8023
8024         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
8025
8026         AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Fcb->Header.Resource);
8027
8028 try_exit:
8029
8030         NOTHING;
8031     }
8032
8033     return ntStatus;
8034 }
8035
8036 NTSTATUS
8037 AFSCloseLibrary()
8038 {
8039
8040     NTSTATUS ntStatus = STATUS_SUCCESS;
8041     AFSDirectoryCB *pDirNode = NULL, *pLastDirNode = NULL;
8042     LONG lCount;
8043
8044     __Enter
8045     {
8046
8047         if( AFSGlobalDotDirEntry != NULL)
8048         {
8049
8050             lCount = AFSObjectInfoDecrement( AFSGlobalDotDirEntry->ObjectInformation,
8051                                              AFS_OBJECT_REFERENCE_GLOBAL);
8052
8053             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8054                           AFS_TRACE_LEVEL_VERBOSE,
8055                           "AFSCloseLibrary Decrement count on parent object %p Cnt %d\n",
8056                           AFSGlobalDotDirEntry->ObjectInformation,
8057                           lCount));
8058
8059             if ( lCount == 0)
8060             {
8061
8062                 AFSDeleteObjectInfo( &AFSGlobalDotDirEntry->ObjectInformation);
8063             }
8064
8065             ExDeleteResourceLite( &AFSGlobalDotDirEntry->NonPaged->Lock);
8066
8067             AFSLibExFreePoolWithTag( AFSGlobalDotDirEntry->NonPaged,
8068                                      AFS_DIR_ENTRY_NP_TAG);
8069
8070             AFSLibExFreePoolWithTag( AFSGlobalDotDirEntry,
8071                                      AFS_DIR_ENTRY_TAG);
8072
8073             AFSGlobalDotDirEntry = NULL;
8074         }
8075
8076         if( AFSGlobalDotDotDirEntry != NULL)
8077         {
8078
8079             lCount = AFSObjectInfoDecrement( AFSGlobalDotDotDirEntry->ObjectInformation,
8080                                              AFS_OBJECT_REFERENCE_GLOBAL);
8081
8082             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8083                           AFS_TRACE_LEVEL_VERBOSE,
8084                           "AFSCloseLibrary Decrement count on parent object %p Cnt %d\n",
8085                           AFSGlobalDotDotDirEntry->ObjectInformation,
8086                           lCount));
8087
8088             if ( lCount == 0)
8089             {
8090
8091                 AFSDeleteObjectInfo( &AFSGlobalDotDotDirEntry->ObjectInformation);
8092             }
8093
8094             ExDeleteResourceLite( &AFSGlobalDotDotDirEntry->NonPaged->Lock);
8095
8096             AFSLibExFreePoolWithTag( AFSGlobalDotDotDirEntry->NonPaged,
8097                                   AFS_DIR_ENTRY_NP_TAG);
8098
8099             AFSLibExFreePoolWithTag( AFSGlobalDotDotDirEntry,
8100                                   AFS_DIR_ENTRY_TAG);
8101
8102             AFSGlobalDotDotDirEntry = NULL;
8103         }
8104
8105         if( AFSSpecialShareNames != NULL)
8106         {
8107
8108             pDirNode = AFSSpecialShareNames;
8109
8110             while( pDirNode != NULL)
8111             {
8112
8113                 pLastDirNode = (AFSDirectoryCB *)pDirNode->ListEntry.fLink;
8114
8115                 lCount = AFSObjectInfoDecrement( pDirNode->ObjectInformation,
8116                                                  AFS_OBJECT_REFERENCE_GLOBAL);
8117
8118                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8119                               AFS_TRACE_LEVEL_VERBOSE,
8120                               "AFSCloseLibrary Decrement count on parent object %p Cnt %d\n",
8121                               pDirNode->ObjectInformation,
8122                               lCount));
8123
8124                 if ( lCount == 0)
8125                 {
8126
8127                     AFSDeleteObjectInfo( &pDirNode->ObjectInformation);
8128                 }
8129
8130                 ExDeleteResourceLite( &pDirNode->NonPaged->Lock);
8131
8132                 AFSLibExFreePoolWithTag( pDirNode->NonPaged,
8133                                          AFS_DIR_ENTRY_NP_TAG);
8134
8135                 AFSLibExFreePoolWithTag( pDirNode,
8136                                          AFS_DIR_ENTRY_TAG);
8137
8138                 pDirNode = pLastDirNode;
8139             }
8140
8141             AFSSpecialShareNames = NULL;
8142         }
8143     }
8144
8145     return ntStatus;
8146 }
8147
8148 NTSTATUS
8149 AFSDefaultLogMsg( IN ULONG Subsystem,
8150                   IN ULONG Level,
8151                   IN PCCH Format,
8152                   ...)
8153 {
8154
8155     UNREFERENCED_PARAMETER(Subsystem);
8156     UNREFERENCED_PARAMETER(Level);
8157     NTSTATUS ntStatus = STATUS_SUCCESS;
8158     va_list va_args;
8159     char chDebugBuffer[ 256];
8160
8161     __Enter
8162     {
8163
8164         va_start( va_args, Format);
8165
8166         ntStatus = RtlStringCbVPrintfA( chDebugBuffer,
8167                                         256,
8168                                         Format,
8169                                         va_args);
8170
8171         if( NT_SUCCESS( ntStatus))
8172         {
8173             DbgPrint( chDebugBuffer);
8174         }
8175
8176         va_end( va_args);
8177     }
8178
8179     return ntStatus;
8180 }
8181
8182 NTSTATUS
8183 AFSGetObjectStatus( IN AFSGetStatusInfoCB *GetStatusInfo,
8184                     IN ULONG InputBufferLength,
8185                     IN AFSStatusInfoCB *StatusInfo,
8186                     OUT ULONG *ReturnLength)
8187 {
8188
8189     NTSTATUS ntStatus = STATUS_SUCCESS;
8190     AFSVolumeCB *pVolumeCB = NULL;
8191     LONG VolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
8192     AFSVolumeCB *pNewVolumeCB = NULL;
8193     LONG NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
8194     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
8195     AFSObjectInfoCB *pObjectInfo = NULL;
8196     ULONGLONG   ullIndex = 0;
8197     UNICODE_STRING uniFullPathName, uniRemainingPath, uniComponentName, uniParsedName;
8198     AFSNameArrayHdr *pNameArray = NULL;
8199     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
8200     AFSDirectoryCB *pNewParentDirEntry = NULL;
8201     LONG lCount;
8202
8203     __Enter
8204     {
8205
8206         //
8207         // If we are given a FID then look up the entry by that, otherwise
8208         // do it by name
8209         //
8210
8211         if( GetStatusInfo->FileID.Cell != 0 &&
8212             GetStatusInfo->FileID.Volume != 0 &&
8213             GetStatusInfo->FileID.Vnode != 0 &&
8214             GetStatusInfo->FileID.Unique != 0)
8215         {
8216
8217             AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
8218
8219             //
8220             // Locate the volume node
8221             //
8222
8223             ullIndex = AFSCreateHighIndex( &GetStatusInfo->FileID);
8224
8225             ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
8226                                            ullIndex,
8227                                            (AFSBTreeEntry **)&pVolumeCB);
8228
8229             if( pVolumeCB != NULL)
8230             {
8231
8232                 VolumeReferenceReason = AFS_VOLUME_REFERENCE_GET_OBJECT;
8233
8234                 lCount = AFSVolumeIncrement( pVolumeCB,
8235                                              VolumeReferenceReason);
8236
8237                 AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8238                               AFS_TRACE_LEVEL_VERBOSE,
8239                               "AFSGetObjectStatus Increment count on volume %p Reason %u Cnt %d\n",
8240                               pVolumeCB,
8241                               VolumeReferenceReason,
8242                               lCount));
8243             }
8244
8245             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
8246
8247             if( !NT_SUCCESS( ntStatus) ||
8248                 pVolumeCB == NULL)
8249             {
8250                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
8251             }
8252
8253             if( AFSIsVolumeFID( &GetStatusInfo->FileID))
8254             {
8255
8256                 pObjectInfo = &pVolumeCB->ObjectInformation;
8257
8258                 AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
8259                                   TRUE);
8260
8261                 lCount = AFSObjectInfoIncrement( pObjectInfo,
8262                                                  AFS_OBJECT_REFERENCE_STATUS);
8263
8264                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8265                               AFS_TRACE_LEVEL_VERBOSE,
8266                               "AFSGetObjectStatus Increment1 count on object %p Cnt %d\n",
8267                               pObjectInfo,
8268                               lCount));
8269
8270                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8271             }
8272             else
8273             {
8274
8275                 AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
8276                                 TRUE);
8277
8278                 ullIndex = AFSCreateLowIndex( &GetStatusInfo->FileID);
8279
8280                 ntStatus = AFSLocateHashEntry( pVolumeCB->ObjectInfoTree.TreeHead,
8281                                                ullIndex,
8282                                                (AFSBTreeEntry **)&pObjectInfo);
8283
8284                 if( pObjectInfo != NULL)
8285                 {
8286
8287                     //
8288                     // Reference the node so it won't be torn down
8289                     //
8290
8291                     lCount = AFSObjectInfoIncrement( pObjectInfo,
8292                                                      AFS_OBJECT_REFERENCE_STATUS);
8293
8294                     AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8295                                   AFS_TRACE_LEVEL_VERBOSE,
8296                                   "AFSGetObjectStatus Increment2 count on object %p Cnt %d\n",
8297                                   pObjectInfo,
8298                                   lCount));
8299
8300                     KeQueryTickCount( &pObjectInfo->LastAccessCount);
8301                 }
8302
8303                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8304
8305                 if( !NT_SUCCESS( ntStatus) ||
8306                     pObjectInfo == NULL)
8307                 {
8308                     try_return( ntStatus = STATUS_INVALID_PARAMETER);
8309                 }
8310             }
8311         }
8312         else
8313         {
8314
8315             if( GetStatusInfo->FileNameLength == 0 ||
8316                 InputBufferLength < (ULONG)(FIELD_OFFSET( AFSGetStatusInfoCB, FileName) + GetStatusInfo->FileNameLength))
8317             {
8318                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
8319             }
8320
8321             uniFullPathName.Length = GetStatusInfo->FileNameLength;
8322             uniFullPathName.MaximumLength = uniFullPathName.Length;
8323
8324             uniFullPathName.Buffer = (WCHAR *)GetStatusInfo->FileName;
8325
8326             //
8327             // This name should begin with the \afs server so parse it off and check it
8328             //
8329
8330             FsRtlDissectName( uniFullPathName,
8331                               &uniComponentName,
8332                               &uniRemainingPath);
8333
8334             if( RtlCompareUnicodeString( &uniComponentName,
8335                                          &AFSServerName,
8336                                          TRUE) != 0)
8337             {
8338                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8339                               AFS_TRACE_LEVEL_ERROR,
8340                               "AFSGetObjectStatus Name %wZ contains invalid server name\n",
8341                               &uniFullPathName));
8342
8343                 try_return( ntStatus = STATUS_OBJECT_PATH_INVALID);
8344             }
8345
8346             uniFullPathName = uniRemainingPath;
8347
8348             uniParsedName = uniFullPathName;
8349
8350             //
8351             // Our name array
8352             //
8353
8354             pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
8355                                            0);
8356
8357             if( pNameArray == NULL)
8358             {
8359                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8360             }
8361
8362             pVolumeCB = AFSGlobalRoot;
8363
8364             pParentDirEntry = AFSGlobalRoot->DirectoryCB;
8365
8366             //
8367             // Increment the ref count on the volume and dir entry for correct processing below
8368             //
8369
8370             VolumeReferenceReason = AFS_VOLUME_REFERENCE_GET_OBJECT;
8371
8372             lCount = AFSVolumeIncrement( pVolumeCB,
8373                                          VolumeReferenceReason);
8374
8375             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8376                           AFS_TRACE_LEVEL_VERBOSE,
8377                           "AFSGetObjectStatus Increment2 count on volume %p Reason %u Cnt %d\n",
8378                           pVolumeCB,
8379                           VolumeReferenceReason,
8380                           lCount));
8381
8382             lCount = InterlockedIncrement( &pParentDirEntry->DirOpenReferenceCount);
8383
8384             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8385                           AFS_TRACE_LEVEL_VERBOSE,
8386                           "AFSGetObjectStatus Increment count on %wZ DE %p Ccb %p Cnt %d\n",
8387                           &pParentDirEntry->NameInformation.FileName,
8388                           pParentDirEntry,
8389                           NULL,
8390                           lCount));
8391
8392             ntStatus = AFSLocateNameEntry( NULL,
8393                                            NULL,
8394                                            &uniFullPathName,
8395                                            &uniParsedName,
8396                                            pNameArray,
8397                                            AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL |
8398                                                AFS_LOCATE_FLAGS_NO_SL_TARGET_EVAL,
8399                                            pVolumeCB,
8400                                            pParentDirEntry,
8401                                            &pNewVolumeCB,
8402                                            &NewVolumeReferenceReason,
8403                                            &pNewParentDirEntry,
8404                                            &pDirectoryEntry,
8405                                            NULL);
8406
8407             if ( pNewVolumeCB != NULL)
8408             {
8409
8410                 //
8411                 // AFSLocateNameEntry returns pNewVolumeCB with a reference held
8412                 // even if pVolumeCB == pNewVolumeCB.  It is always safe to release
8413                 // the reference on pVolumeCB that was held prior to the call.
8414                 // If pVolumeCB == pNewVolumeCB, the reference from AFSLocateNameEntry
8415                 // will be released second.
8416                 //
8417
8418                 lCount = AFSVolumeDecrement( pVolumeCB,
8419                                              VolumeReferenceReason);
8420
8421                 AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8422                               AFS_TRACE_LEVEL_VERBOSE,
8423                               "AFSGetObjectStatus Decrement count on volume %p Reason %u Cnt %d\n",
8424                               pVolumeCB,
8425                               VolumeReferenceReason,
8426                               lCount));
8427
8428                 pVolumeCB = pNewVolumeCB;
8429
8430                 pNewVolumeCB = NULL;
8431
8432                 VolumeReferenceReason = NewVolumeReferenceReason;
8433
8434                 NewVolumeReferenceReason = AFS_VOLUME_REFERENCE_INVALID;
8435             }
8436
8437             //
8438             // AFSLocateNameEntry does not alter the reference count of
8439             // pParentDirectoryCB and it returns pNewParentDirectoryCB with
8440             // a reference held.
8441             //
8442
8443             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
8444
8445             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8446                           AFS_TRACE_LEVEL_VERBOSE,
8447                           "AFSGetObjectStatus DecrementX count on %wZ DE %p Cnt %d\n",
8448                           &pParentDirEntry->NameInformation.FileName,
8449                           pParentDirEntry,
8450                           lCount));
8451
8452             pParentDirEntry = pNewParentDirEntry;
8453
8454             pNewParentDirEntry = NULL;
8455
8456             if( !NT_SUCCESS( ntStatus) ||
8457                 ntStatus == STATUS_REPARSE)
8458             {
8459
8460                 pVolumeCB = NULL;
8461
8462                 try_return( ntStatus);
8463             }
8464
8465             pObjectInfo = pDirectoryEntry->ObjectInformation;
8466
8467             AFSAcquireExcl( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
8468                             TRUE);
8469
8470             lCount = AFSObjectInfoIncrement( pObjectInfo,
8471                                              AFS_OBJECT_REFERENCE_STATUS);
8472
8473             AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8474                           AFS_TRACE_LEVEL_VERBOSE,
8475                           "AFSGetObjectStatus Increment3 count on object %p Cnt %d\n",
8476                           pObjectInfo,
8477                           lCount));
8478
8479             AFSReleaseResource( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
8480         }
8481
8482         //
8483         // At this point we have an object info block, return the information
8484         //
8485
8486         StatusInfo->FileId = pObjectInfo->FileId;
8487
8488         StatusInfo->TargetFileId = pObjectInfo->TargetFileId;
8489
8490         StatusInfo->Expiration = pObjectInfo->Expiration;
8491
8492         StatusInfo->DataVersion = pObjectInfo->DataVersion;
8493
8494         StatusInfo->FileType = pObjectInfo->FileType;
8495
8496         StatusInfo->ObjectFlags = pObjectInfo->Flags;
8497
8498         StatusInfo->CreationTime = pObjectInfo->CreationTime;
8499
8500         StatusInfo->LastAccessTime = pObjectInfo->LastAccessTime;
8501
8502         StatusInfo->LastWriteTime = pObjectInfo->LastWriteTime;
8503
8504         StatusInfo->ChangeTime = pObjectInfo->ChangeTime;
8505
8506         StatusInfo->FileAttributes = pObjectInfo->FileAttributes;
8507
8508         StatusInfo->EndOfFile = pObjectInfo->EndOfFile;
8509
8510         StatusInfo->AllocationSize = pObjectInfo->AllocationSize;
8511
8512         StatusInfo->EaSize = pObjectInfo->EaSize;
8513
8514         StatusInfo->Links = pObjectInfo->Links;
8515
8516         //
8517         // Return the information length
8518         //
8519
8520         *ReturnLength = sizeof( AFSStatusInfoCB);
8521
8522 try_exit:
8523
8524         if( pDirectoryEntry != NULL)
8525         {
8526
8527             lCount = InterlockedDecrement( &pDirectoryEntry->DirOpenReferenceCount);
8528
8529             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8530                           AFS_TRACE_LEVEL_VERBOSE,
8531                           "AFSGetObjectStatus Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
8532                           &pDirectoryEntry->NameInformation.FileName,
8533                           pDirectoryEntry,
8534                           NULL,
8535                           lCount));
8536
8537             ASSERT( lCount >= 0);
8538         }
8539
8540         if ( pParentDirEntry != NULL)
8541         {
8542
8543             lCount = InterlockedDecrement( &pParentDirEntry->DirOpenReferenceCount);
8544
8545             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8546                           AFS_TRACE_LEVEL_VERBOSE,
8547                           "AFSGetObjectStatus Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
8548                           &pParentDirEntry->NameInformation.FileName,
8549                           pParentDirEntry,
8550                           NULL,
8551                           lCount));
8552
8553             ASSERT( lCount >= 0);
8554         }
8555
8556         if( pVolumeCB != NULL)
8557         {
8558
8559             if( pObjectInfo != NULL)
8560             {
8561
8562                 AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
8563                                   TRUE);
8564
8565                 lCount = AFSObjectInfoDecrement( pObjectInfo,
8566                                                  AFS_OBJECT_REFERENCE_STATUS);
8567
8568                 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8569                               AFS_TRACE_LEVEL_VERBOSE,
8570                               "AFSGetObjectStatus Decrement count on object %p Cnt %d\n",
8571                               pObjectInfo,
8572                               lCount));
8573
8574                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8575             }
8576
8577             lCount = AFSVolumeDecrement( pVolumeCB,
8578                                          VolumeReferenceReason);
8579
8580             AFSDbgTrace(( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8581                           AFS_TRACE_LEVEL_VERBOSE,
8582                           "AFSGetObjectStatus Decrement4 count on volume %p Reason %u Cnt %d\n",
8583                           pVolumeCB,
8584                           VolumeReferenceReason,
8585                           lCount));
8586         }
8587
8588         if( pNameArray != NULL)
8589         {
8590
8591             AFSFreeNameArray( pNameArray);
8592         }
8593     }
8594
8595     return ntStatus;
8596 }
8597
8598 NTSTATUS
8599 AFSCheckSymlinkAccess( IN AFSDirectoryCB *ParentDirectoryCB,
8600                        IN UNICODE_STRING *ComponentName)
8601 {
8602
8603     NTSTATUS ntStatus = STATUS_SUCCESS;
8604     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
8605     AFSDirectoryCB *pDirEntry = NULL;
8606     ULONG ulCRC = 0;
8607     LONG lCount;
8608
8609     __Enter
8610     {
8611
8612         //
8613         // Search for the entry in the parent
8614         //
8615
8616         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8617                       AFS_TRACE_LEVEL_VERBOSE_2,
8618                       "AFSCheckSymlinkAccess Searching for entry %wZ case sensitive\n",
8619                       ComponentName));
8620
8621         ulCRC = AFSGenerateCRC( ComponentName,
8622                                 FALSE);
8623
8624         AFSAcquireShared( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
8625                           TRUE);
8626
8627         AFSLocateCaseSensitiveDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
8628                                         ulCRC,
8629                                         &pDirEntry);
8630
8631         if( pDirEntry == NULL)
8632         {
8633
8634             //
8635             // Missed so perform a case insensitive lookup
8636             //
8637
8638             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8639                           AFS_TRACE_LEVEL_VERBOSE_2,
8640                           "AFSCheckSymlinkAccess Searching for entry %wZ case insensitive\n",
8641                           ComponentName));
8642
8643             ulCRC = AFSGenerateCRC( ComponentName,
8644                                     TRUE);
8645
8646             AFSLocateCaseInsensitiveDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
8647                                               ulCRC,
8648                                               &pDirEntry);
8649
8650             if( pDirEntry == NULL)
8651             {
8652
8653                 //
8654                 // OK, if this component is a valid short name then try
8655                 // a lookup in the short name tree
8656                 //
8657
8658                 if( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
8659                     RtlIsNameLegalDOS8Dot3( ComponentName,
8660                                             NULL,
8661                                             NULL))
8662                 {
8663
8664                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8665                                   AFS_TRACE_LEVEL_VERBOSE_2,
8666                                   "AFSCheckSymlinkAccess Searching for entry %wZ short name\n",
8667                                   ComponentName));
8668
8669                     AFSLocateShortNameDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.ShortNameTree,
8670                                                 ulCRC,
8671                                                 &pDirEntry);
8672                 }
8673             }
8674         }
8675
8676         if( pDirEntry != NULL)
8677         {
8678             lCount = InterlockedIncrement( &pDirEntry->DirOpenReferenceCount);
8679
8680             AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8681                           AFS_TRACE_LEVEL_VERBOSE,
8682                           "AFSCheckSymlinkAccess Increment count on %wZ DE %p Ccb %p Cnt %d\n",
8683                           &pDirEntry->NameInformation.FileName,
8684                           pDirEntry,
8685                           NULL,
8686                           lCount));
8687
8688             ASSERT( lCount >= 0);
8689         }
8690
8691         AFSReleaseResource( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
8692
8693         if( pDirEntry == NULL)
8694         {
8695
8696             AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8697                           AFS_TRACE_LEVEL_VERBOSE_2,
8698                           "AFSCheckSymlinkAccess Failed to locate entry %wZ ntStatus %08X\n",
8699                           ComponentName,
8700                           STATUS_OBJECT_NAME_NOT_FOUND));
8701
8702             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
8703         }
8704
8705         //
8706         // We have the symlink object but previously failed to process it so return access
8707         // denied.
8708         //
8709
8710         AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
8711                       AFS_TRACE_LEVEL_VERBOSE_2,
8712                       "AFSCheckSymlinkAccess Failing symlink access to entry %wZ REPARSE_POINT_NOT_RESOLVED\n",
8713                       ComponentName));
8714
8715         ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
8716
8717         lCount = InterlockedDecrement( &pDirEntry->DirOpenReferenceCount);
8718
8719         AFSDbgTrace(( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8720                       AFS_TRACE_LEVEL_VERBOSE,
8721                       "AFSCheckSymlinkAccess Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
8722                       &pDirEntry->NameInformation.FileName,
8723                       pDirEntry,
8724                       NULL,
8725                       lCount));
8726
8727         ASSERT( lCount >= 0);
8728
8729 try_exit:
8730
8731         NOTHING;
8732     }
8733
8734     return ntStatus;
8735 }
8736
8737 NTSTATUS
8738 AFSRetrieveFinalComponent( IN UNICODE_STRING *FullPathName,
8739                            OUT UNICODE_STRING *ComponentName)
8740 {
8741
8742     NTSTATUS ntStatus = STATUS_SUCCESS;
8743     UNICODE_STRING uniFullPathName, uniRemainingPath, uniComponentName;
8744
8745     uniFullPathName = *FullPathName;
8746
8747     while( TRUE)
8748     {
8749
8750         FsRtlDissectName( uniFullPathName,
8751                           &uniComponentName,
8752                           &uniRemainingPath);
8753
8754         if( uniRemainingPath.Length == 0)
8755         {
8756             break;
8757         }
8758
8759         uniFullPathName = uniRemainingPath;
8760     }
8761
8762     if( uniComponentName.Length > 0)
8763     {
8764         *ComponentName = uniComponentName;
8765     }
8766
8767     return ntStatus;
8768 }
8769
8770 void
8771 AFSDumpTraceFiles_Default()
8772 {
8773     return;
8774 }
8775
8776 BOOLEAN
8777 AFSValidNameFormat( IN UNICODE_STRING *FileName)
8778 {
8779
8780     BOOLEAN bIsValidName = TRUE;
8781     USHORT usIndex = 0;
8782
8783     __Enter
8784     {
8785
8786         while( usIndex < FileName->Length/sizeof( WCHAR))
8787         {
8788
8789             if( FileName->Buffer[ usIndex] == L':' ||
8790                 FileName->Buffer[ usIndex] == L'*' ||
8791                 FileName->Buffer[ usIndex] == L'?' ||
8792                 FileName->Buffer[ usIndex] == L'"' ||
8793                 FileName->Buffer[ usIndex] == L'<' ||
8794                 FileName->Buffer[ usIndex] == L'>')
8795             {
8796                 bIsValidName = FALSE;
8797                 break;
8798             }
8799
8800             usIndex++;
8801         }
8802     }
8803
8804     return bIsValidName;
8805 }
8806
8807 NTSTATUS
8808 AFSCreateDefaultSecurityDescriptor()
8809 {
8810
8811     NTSTATUS ntStatus = STATUS_SUCCESS;
8812     PACL pSACL = NULL;
8813     ULONG ulSACLSize = 0;
8814     SYSTEM_MANDATORY_LABEL_ACE* pACE = NULL;
8815     ULONG ulACESize = 0;
8816     SECURITY_DESCRIPTOR *pSecurityDescr = NULL;
8817     ULONG ulSDLength = 0;
8818     SECURITY_DESCRIPTOR *pRelativeSecurityDescr = NULL;
8819     PSID pWorldSID = NULL;
8820     ULONG *pulSubAuthority = NULL;
8821     ULONG ulWorldSIDLEngth = 0;
8822
8823     __Enter
8824     {
8825
8826         ulWorldSIDLEngth = RtlLengthRequiredSid( 1);
8827
8828         pWorldSID = (PSID)ExAllocatePoolWithTag( PagedPool,
8829                                                  ulWorldSIDLEngth,
8830                                                  AFS_GENERIC_MEMORY_29_TAG);
8831
8832         if( pWorldSID == NULL)
8833         {
8834             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate World SID\n");
8835
8836             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8837         }
8838
8839         RtlZeroMemory( pWorldSID,
8840                        ulWorldSIDLEngth);
8841
8842         RtlInitializeSid( pWorldSID,
8843                           &SeWorldSidAuthority,
8844                           1);
8845
8846         pulSubAuthority = RtlSubAuthoritySid(pWorldSID, 0);
8847         *pulSubAuthority = SECURITY_WORLD_RID;
8848
8849         if( AFSRtlSetSaclSecurityDescriptor == NULL)
8850         {
8851
8852             AFSPrint( "AFSCreateDefaultSecurityDescriptor AFSRtlSetSaclSecurityDescriptor == NULL\n");
8853         }
8854         else
8855         {
8856
8857             ulACESize = sizeof( SYSTEM_MANDATORY_LABEL_ACE) + 128;
8858
8859             pACE = (SYSTEM_MANDATORY_LABEL_ACE *)ExAllocatePoolWithTag( PagedPool,
8860                                                                         ulACESize,
8861                                                                         AFS_GENERIC_MEMORY_29_TAG);
8862
8863             if( pACE == NULL)
8864             {
8865
8866                 AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_29_TAG\n");
8867
8868                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8869             }
8870
8871             RtlZeroMemory( pACE,
8872                            ulACESize);
8873
8874             pACE->Header.AceFlags = OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE;
8875             pACE->Header.AceType = SYSTEM_MANDATORY_LABEL_ACE_TYPE;
8876             pACE->Header.AceSize = FIELD_OFFSET( SYSTEM_MANDATORY_LABEL_ACE, SidStart) + (USHORT)RtlLengthSid( SeExports->SeLowMandatorySid);
8877             pACE->Mask = SYSTEM_MANDATORY_LABEL_NO_WRITE_UP;
8878
8879             RtlCopySid( RtlLengthSid( SeExports->SeLowMandatorySid),
8880                         &pACE->SidStart,
8881                         SeExports->SeLowMandatorySid);
8882
8883             ulSACLSize = sizeof(ACL) + RtlLengthSid( SeExports->SeLowMandatorySid) +
8884                 FIELD_OFFSET( SYSTEM_MANDATORY_LABEL_ACE, SidStart) + ulACESize;
8885
8886             pSACL = (PACL)ExAllocatePoolWithTag( PagedPool,
8887                                                  ulSACLSize,
8888                                                  AFS_GENERIC_MEMORY_29_TAG);
8889
8890             if( pSACL == NULL)
8891             {
8892
8893                 AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_29_TAG\n");
8894
8895                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8896             }
8897
8898             ntStatus = RtlCreateAcl( pSACL,
8899                                      ulSACLSize,
8900                                      ACL_REVISION);
8901
8902             if( !NT_SUCCESS( ntStatus))
8903             {
8904
8905                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlCreateAcl ntStatus %08lX\n",
8906                           ntStatus);
8907
8908                 try_return( ntStatus);
8909             }
8910
8911             ntStatus = RtlAddAce( pSACL,
8912                                   ACL_REVISION,
8913                                   0,
8914                                   pACE,
8915                                   pACE->Header.AceSize);
8916
8917             if( !NT_SUCCESS( ntStatus))
8918             {
8919
8920                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlAddAce ntStatus %08lX\n",
8921                           ntStatus);
8922
8923                 try_return( ntStatus);
8924             }
8925         }
8926
8927         pSecurityDescr = (SECURITY_DESCRIPTOR *)ExAllocatePoolWithTag( NonPagedPool,
8928                                                                        sizeof( SECURITY_DESCRIPTOR),
8929                                                                        AFS_GENERIC_MEMORY_27_TAG);
8930
8931         if( pSecurityDescr == NULL)
8932         {
8933
8934             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_27_TAG\n");
8935
8936             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8937         }
8938
8939         ntStatus = RtlCreateSecurityDescriptor( pSecurityDescr,
8940                                                 SECURITY_DESCRIPTOR_REVISION);
8941
8942         if( !NT_SUCCESS( ntStatus))
8943         {
8944
8945             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlCreateSecurityDescriptor ntStatus %08lX\n",
8946                       ntStatus);
8947
8948             try_return( ntStatus);
8949         }
8950
8951         if( AFSRtlSetSaclSecurityDescriptor != NULL)
8952         {
8953             ntStatus = AFSRtlSetSaclSecurityDescriptor( pSecurityDescr,
8954                                                         TRUE,
8955                                                         pSACL,
8956                                                         FALSE);
8957
8958             if( !NT_SUCCESS( ntStatus))
8959             {
8960
8961                 AFSPrint( "AFSCreateDefaultSecurityDescriptor AFSRtlSetSaclSecurityDescriptor ntStatus %08lX\n",
8962                           ntStatus);
8963
8964                 try_return( ntStatus);
8965             }
8966         }
8967
8968         //
8969         // Add in the group and owner to the SD
8970         //
8971
8972         if( AFSRtlSetGroupSecurityDescriptor != NULL)
8973         {
8974             ntStatus = AFSRtlSetGroupSecurityDescriptor( pSecurityDescr,
8975                                                          pWorldSID,
8976                                                          FALSE);
8977
8978             if( !NT_SUCCESS( ntStatus))
8979             {
8980
8981                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlSetGroupSecurityDescriptor failed ntStatus %08lX\n",
8982                           ntStatus);
8983
8984                 try_return( ntStatus);
8985             }
8986         }
8987
8988         ntStatus = RtlSetOwnerSecurityDescriptor( pSecurityDescr,
8989                                                   pWorldSID,
8990                                                   FALSE);
8991
8992         if( !NT_SUCCESS( ntStatus))
8993         {
8994
8995             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlSetOwnerSecurityDescriptor failed ntStatus %08lX\n",
8996                       ntStatus);
8997
8998             try_return( ntStatus);
8999         }
9000
9001         if( !RtlValidSecurityDescriptor( pSecurityDescr))
9002         {
9003
9004             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlValidSecurityDescriptor NOT\n");
9005
9006             try_return( ntStatus = STATUS_INVALID_PARAMETER);
9007         }
9008
9009         pRelativeSecurityDescr = (SECURITY_DESCRIPTOR *)AFSLibExAllocatePoolWithTag( NonPagedPool,
9010                                                                                      PAGE_SIZE,
9011                                                                                      AFS_GENERIC_MEMORY_27_TAG);
9012
9013         if( pRelativeSecurityDescr == NULL)
9014         {
9015
9016             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_27_TAG\n");
9017
9018             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
9019         }
9020
9021         ulSDLength = PAGE_SIZE;
9022
9023         ntStatus = RtlAbsoluteToSelfRelativeSD( pSecurityDescr,
9024                                                 pRelativeSecurityDescr,
9025                                                 &ulSDLength);
9026
9027         if( !NT_SUCCESS( ntStatus))
9028         {
9029
9030             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlAbsoluteToSelfRelativeSD ntStatus %08lX\n",
9031                       ntStatus);
9032
9033             try_return( ntStatus);
9034         }
9035
9036         AFSDefaultSD = pRelativeSecurityDescr;
9037
9038 try_exit:
9039
9040         if( !NT_SUCCESS( ntStatus))
9041         {
9042
9043             if( pRelativeSecurityDescr != NULL)
9044             {
9045
9046                 AFSLibExFreePoolWithTag( pRelativeSecurityDescr,
9047                                          AFS_GENERIC_MEMORY_27_TAG);
9048             }
9049         }
9050
9051         if( pSecurityDescr != NULL)
9052         {
9053
9054             AFSLibExFreePoolWithTag( pSecurityDescr,
9055                                      AFS_GENERIC_MEMORY_27_TAG);
9056         }
9057
9058         if( pSACL != NULL)
9059         {
9060
9061             AFSLibExFreePoolWithTag( pSACL,
9062                                      AFS_GENERIC_MEMORY_29_TAG);
9063         }
9064
9065         if( pACE != NULL)
9066         {
9067
9068             AFSLibExFreePoolWithTag( pACE,
9069                                      AFS_GENERIC_MEMORY_29_TAG);
9070         }
9071
9072         if( pWorldSID != NULL)
9073         {
9074
9075             AFSLibExFreePoolWithTag( pWorldSID,
9076                                      AFS_GENERIC_MEMORY_29_TAG);
9077         }
9078     }
9079
9080     return ntStatus;
9081 }
9082
9083 void
9084 AFSRetrieveParentPath( IN UNICODE_STRING *FullFileName,
9085                        OUT UNICODE_STRING *ParentPath)
9086 {
9087
9088     *ParentPath = *FullFileName;
9089
9090     //
9091     // If the final character is a \, jump over it
9092     //
9093
9094     if( ParentPath->Buffer[ (ParentPath->Length/sizeof( WCHAR)) - 1] == L'\\')
9095     {
9096         ParentPath->Length -= sizeof( WCHAR);
9097     }
9098
9099     while( ParentPath->Buffer[ (ParentPath->Length/sizeof( WCHAR)) - 1] != L'\\')
9100     {
9101         ParentPath->Length -= sizeof( WCHAR);
9102     }
9103
9104     //
9105     // And the separator
9106     //
9107
9108     ParentPath->Length -= sizeof( WCHAR);
9109
9110     return;
9111 }
9112
9113 NTSTATUS
9114 AFSRetrieveValidAuthGroup( IN AFSFcb *Fcb,
9115                            IN AFSObjectInfoCB *ObjectInfo,
9116                            IN BOOLEAN WriteAccess,
9117                            OUT GUID *AuthGroup)
9118 {
9119
9120     NTSTATUS ntStatus = STATUS_SUCCESS;
9121     GUID     stAuthGroup, stZeroAuthGroup;
9122     BOOLEAN  bFoundAuthGroup = FALSE;
9123     AFSCcb  *pCcb = NULL;
9124     AFSFcb *pFcb = Fcb;
9125
9126     __Enter
9127     {
9128
9129         RtlZeroMemory( &stAuthGroup,
9130                        sizeof( GUID));
9131
9132         RtlZeroMemory( &stZeroAuthGroup,
9133                        sizeof( GUID));
9134
9135         if( Fcb == NULL)
9136         {
9137
9138             if( ObjectInfo != NULL &&
9139                 ObjectInfo->Fcb != NULL)
9140             {
9141                 pFcb = ObjectInfo->Fcb;
9142             }
9143         }
9144
9145         if( pFcb != NULL)
9146         {
9147
9148             AFSAcquireShared( &Fcb->NPFcb->CcbListLock,
9149                               TRUE);
9150
9151             pCcb = Fcb->CcbListHead;
9152
9153             while( pCcb != NULL)
9154             {
9155
9156                 if( WriteAccess &&
9157                     pCcb->GrantedAccess & FILE_WRITE_DATA)
9158                 {
9159                     RtlCopyMemory( &stAuthGroup,
9160                                    &pCcb->AuthGroup,
9161                                    sizeof( GUID));
9162
9163                     bFoundAuthGroup = TRUE;
9164
9165                     break;
9166                 }
9167                 else if( pCcb->GrantedAccess & FILE_READ_DATA)
9168                 {
9169                     //
9170                     // At least get the read-only access
9171                     //
9172
9173                     RtlCopyMemory( &stAuthGroup,
9174                                    &pCcb->AuthGroup,
9175                                    sizeof( GUID));
9176
9177                     bFoundAuthGroup = TRUE;
9178                 }
9179
9180                 pCcb = (AFSCcb *)pCcb->ListEntry.fLink;
9181             }
9182
9183             AFSReleaseResource( &Fcb->NPFcb->CcbListLock);
9184         }
9185
9186         if( !bFoundAuthGroup)
9187         {
9188
9189             AFSRetrieveAuthGroupFnc( (ULONGLONG)PsGetCurrentProcessId(),
9190                                      (ULONGLONG)PsGetCurrentThreadId(),
9191                                       &stAuthGroup);
9192
9193             if( RtlCompareMemory( &stZeroAuthGroup,
9194                                   &stAuthGroup,
9195                                   sizeof( GUID)) == sizeof( GUID))
9196             {
9197
9198                 DbgPrint("AFSRetrieveValidAuthGroup Failed to locate PAG\n");
9199
9200                 try_return( ntStatus = STATUS_ACCESS_DENIED);
9201             }
9202         }
9203
9204         RtlCopyMemory( AuthGroup,
9205                        &stAuthGroup,
9206                        sizeof( GUID));
9207
9208 try_exit:
9209
9210         NOTHING;
9211     }
9212
9213     return ntStatus;
9214 }
9215
9216 NTSTATUS
9217 AFSPerformObjectInvalidate( IN AFSObjectInfoCB *ObjectInfo,
9218                             IN ULONG InvalidateReason)
9219 {
9220
9221     AFSDeviceExt       *pRDRDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
9222     NTSTATUS            ntStatus = STATUS_SUCCESS;
9223     LONG                lCount;
9224
9225     __Enter
9226     {
9227
9228         switch( InvalidateReason)
9229         {
9230
9231             case AFS_INVALIDATE_DELETED:
9232             {
9233
9234                 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
9235                               AFS_TRACE_LEVEL_VERBOSE,
9236                               "AFSPerformObjectInvalidation on node type %d for FID %08lX-%08lX-%08lX-%08lX Reason DELETED\n",
9237                               ObjectInfo->FileType,
9238                               ObjectInfo->FileId.Cell,
9239                               ObjectInfo->FileId.Volume,
9240                               ObjectInfo->FileId.Vnode,
9241                               ObjectInfo->FileId.Unique));
9242
9243                 if( ObjectInfo->FileType == AFS_FILE_TYPE_FILE &&
9244                     ObjectInfo->Fcb != NULL)
9245                 {
9246
9247                     if( !BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
9248                     {
9249
9250                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9251                                         TRUE);
9252
9253                         ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
9254
9255                         KeSetEvent( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
9256                                     0,
9257                                     FALSE);
9258
9259                         //
9260                         // Clear out the extents
9261                         // And get rid of them (note this involves waiting
9262                         // for any writes or reads to the cache to complete)
9263                         //
9264
9265                         AFSTearDownFcbExtents( ObjectInfo->Fcb,
9266                                                NULL);
9267
9268                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
9269                     }
9270                 }
9271
9272                 ObjectInfo->Links = 0;
9273
9274                 break;
9275             }
9276
9277             case AFS_INVALIDATE_DATA_VERSION:
9278             {
9279
9280                 if( ObjectInfo->FileType == AFS_FILE_TYPE_FILE &&
9281                     ObjectInfo->Fcb != NULL)
9282                 {
9283
9284                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
9285                                   AFS_TRACE_LEVEL_VERBOSE,
9286                                   "AFSPerformObjectInvalidation on node type %d for FID %08lX-%08lX-%08lX-%08lX Reason DATA_VERSION FCB %0p\n",
9287                                   ObjectInfo->FileType,
9288                                   ObjectInfo->FileId.Cell,
9289                                   ObjectInfo->FileId.Volume,
9290                                   ObjectInfo->FileId.Vnode,
9291                                   ObjectInfo->FileId.Unique,
9292                                   ObjectInfo->Fcb));
9293
9294                     if( BooleanFlagOn( pRDRDevExt->DeviceFlags, AFS_DEVICE_FLAG_DIRECT_SERVICE_IO))
9295                     {
9296
9297                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9298                                       AFS_TRACE_LEVEL_VERBOSE,
9299                                       "AFSPerformObjectInvalidate Acquiring Fcb lock %p EXCL %08lX\n",
9300                                       &ObjectInfo->Fcb->NPFcb->Resource,
9301                                       PsGetCurrentThread()));
9302
9303                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Resource,
9304                                         TRUE);
9305
9306                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9307                                       AFS_TRACE_LEVEL_VERBOSE,
9308                                       "AFSPerformObjectInvalidation DirectIO Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
9309                                       &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9310                                       PsGetCurrentThread()));
9311
9312                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9313                                         TRUE);
9314
9315                         __try
9316                         {
9317
9318                             if( ObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL &&
9319                                 !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9320                                                       NULL,
9321                                                       0,
9322                                                       FALSE))
9323                             {
9324
9325                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9326                                               AFS_TRACE_LEVEL_WARNING,
9327                                               "AFSPerformObjectInvalidation DirectIO CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9328                                               ObjectInfo->FileId.Cell,
9329                                               ObjectInfo->FileId.Volume,
9330                                               ObjectInfo->FileId.Vnode,
9331                                               ObjectInfo->FileId.Unique));
9332
9333                                 SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9334
9335                                 SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9336                             }
9337                         }
9338                         __except( EXCEPTION_EXECUTE_HANDLER)
9339                         {
9340
9341                             ntStatus = GetExceptionCode();
9342
9343                             AFSDbgTrace(( 0,
9344                                           0,
9345                                           "EXCEPTION - AFSPerformObjectInvalidation DirectIO FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
9346                                           ObjectInfo->FileId.Cell,
9347                                           ObjectInfo->FileId.Volume,
9348                                           ObjectInfo->FileId.Vnode,
9349                                           ObjectInfo->FileId.Unique,
9350                                           ntStatus));
9351
9352                             SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9353
9354                             SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9355                         }
9356
9357                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9358                                       AFS_TRACE_LEVEL_VERBOSE,
9359                                       "AFSPerformObjectInvalidation DirectIO Releasing Fcb SectionObject lock %p EXCL %08lX\n",
9360                                       &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9361                                       PsGetCurrentThread()));
9362
9363                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->SectionObjectResource);
9364
9365                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9366                                       AFS_TRACE_LEVEL_VERBOSE,
9367                                       "AFSPerformObjectInvalidation DirectIO Releasing Fcb lock %p EXCL %08lX\n",
9368                                       &ObjectInfo->Fcb->NPFcb->Resource,
9369                                       PsGetCurrentThread()));
9370
9371                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9372                     }
9373                     else
9374                     {
9375                         LIST_ENTRY         *le;
9376                         AFSExtent          *pEntry;
9377                         ULONG               ulProcessCount = 0;
9378                         ULONG               ulCount = 0;
9379                         LARGE_INTEGER liCurrentOffset = {0,0};
9380                         LARGE_INTEGER liFlushLength = {0,0};
9381                         ULONG ulFlushLength = 0;
9382                         BOOLEAN bLocked = FALSE;
9383                         BOOLEAN bExtentsLocked = FALSE;
9384                         BOOLEAN bCleanExtents = FALSE;
9385
9386                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9387                                       AFS_TRACE_LEVEL_VERBOSE,
9388                                       "AFSPerformObjectInvalidate Acquiring Fcb lock %p EXCL %08lX\n",
9389                                       &ObjectInfo->Fcb->NPFcb->Resource,
9390                                       PsGetCurrentThread()));
9391
9392                         AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Resource,
9393                                         TRUE);
9394
9395                         bLocked = TRUE;
9396
9397                         AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
9398                                       AFS_TRACE_LEVEL_VERBOSE,
9399                                       "AFSPerformObjectInvalidate Acquiring Fcb extents lock %p SHARED %08lX\n",
9400                                       &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9401                                       PsGetCurrentThread()));
9402
9403                         AFSAcquireShared( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9404                                           TRUE);
9405
9406                         bExtentsLocked = TRUE;
9407
9408                         //
9409                         // There are several possibilities here:
9410                         //
9411                         // 0. If there are no extents or all of the extents are dirty, do nothing.
9412                         //
9413                         // 1. There could be nothing dirty and an open reference count of zero
9414                         //    in which case we can just tear down all of the extents without
9415                         //    holding any resources.
9416                         //
9417                         // 2. There could be nothing dirty and a non-zero open reference count
9418                         //    in which case we can issue a CcPurge against the entire file
9419                         //    while holding just the Fcb Resource.
9420                         //
9421                         // 3. There can be dirty extents in which case we need to identify
9422                         //    the non-dirty ranges and then perform a CcPurge on just the
9423                         //    non-dirty ranges while holding just the Fcb Resource.
9424                         //
9425
9426                         if ( ObjectInfo->Fcb->Specific.File.ExtentCount != ObjectInfo->Fcb->Specific.File.ExtentsDirtyCount)
9427                         {
9428
9429                             if ( ObjectInfo->Fcb->Specific.File.ExtentsDirtyCount == 0)
9430                             {
9431
9432                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9433
9434                                 bExtentsLocked = FALSE;
9435
9436                                 if ( ObjectInfo->Fcb->OpenReferenceCount == 0)
9437                                 {
9438
9439                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9440
9441                                     bLocked = FALSE;
9442
9443                                     AFSTearDownFcbExtents( ObjectInfo->Fcb,
9444                                                            NULL);
9445                                 }
9446                                 else
9447                                 {
9448
9449                                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9450                                                   AFS_TRACE_LEVEL_VERBOSE,
9451                                                   "AFSPerformObjectInvalidation Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
9452                                                   &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9453                                                   PsGetCurrentThread()));
9454
9455                                     AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9456                                                     TRUE);
9457
9458                                     __try
9459                                     {
9460
9461                                         if( ObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL &&
9462                                             !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9463                                                                   NULL,
9464                                                                   0,
9465                                                                   FALSE))
9466                                         {
9467
9468                                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9469                                                           AFS_TRACE_LEVEL_WARNING,
9470                                                           "AFSPerformObjectInvalidation CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9471                                                           ObjectInfo->FileId.Cell,
9472                                                           ObjectInfo->FileId.Volume,
9473                                                           ObjectInfo->FileId.Vnode,
9474                                                           ObjectInfo->FileId.Unique));
9475
9476                                             SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9477
9478                                             SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9479                                         }
9480                                         else
9481                                         {
9482
9483                                             bCleanExtents = TRUE;
9484                                         }
9485                                     }
9486                                     __except( EXCEPTION_EXECUTE_HANDLER)
9487                                     {
9488
9489                                         ntStatus = GetExceptionCode();
9490
9491                                         AFSDbgTrace(( 0,
9492                                                       0,
9493                                                       "EXCEPTION - AFSPerformObjectInvalidation FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
9494                                                       ObjectInfo->FileId.Cell,
9495                                                       ObjectInfo->FileId.Volume,
9496                                                       ObjectInfo->FileId.Vnode,
9497                                                       ObjectInfo->FileId.Unique,
9498                                                       ntStatus));
9499
9500                                         SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9501
9502                                         SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9503                                     }
9504
9505                                     AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9506                                                   AFS_TRACE_LEVEL_VERBOSE,
9507                                                   "AFSPerformObjectInvalidation Releasing Fcb SectionObject lock %p EXCL %08lX\n",
9508                                                   &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9509                                                   PsGetCurrentThread()));
9510
9511                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->SectionObjectResource);
9512
9513                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9514
9515                                     bLocked = FALSE;
9516                                 }
9517                             }
9518                             else
9519                             {
9520
9521                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9522
9523                                 bExtentsLocked = FALSE;
9524
9525                                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9526                                               AFS_TRACE_LEVEL_VERBOSE,
9527                                               "AFSPerformObjectInvalidation Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
9528                                               &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9529                                               PsGetCurrentThread()));
9530
9531                                 AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9532                                                 TRUE);
9533
9534                                 //
9535                                 // Must build a list of non-dirty ranges from the beginning of the file
9536                                 // to the end.  There can be at most (Fcb->Specific.File.ExtentsDirtyCount + 1)
9537                                 // ranges.  In all but the most extreme random data write scenario there will
9538                                 // be significantly fewer.
9539                                 //
9540                                 // For each range we need offset and size.
9541                                 //
9542
9543                                 AFSByteRange * ByteRangeList = NULL;
9544                                 ULONG          ulByteRangeCount = 0;
9545                                 ULONG          ulIndex;
9546                                 BOOLEAN        bPurgeOnClose = FALSE;
9547
9548                                 __try
9549                                 {
9550
9551                                     ulByteRangeCount = AFSConstructCleanByteRangeList( ObjectInfo->Fcb,
9552                                                                                        &ByteRangeList);
9553
9554                                     if ( ByteRangeList != NULL ||
9555                                          ulByteRangeCount == 0)
9556                                     {
9557
9558                                         for ( ulIndex = 0; ulIndex < ulByteRangeCount; ulIndex++)
9559                                         {
9560
9561                                             ULONG ulSize;
9562
9563                                             do {
9564
9565                                                 ulSize = ByteRangeList[ulIndex].Length.QuadPart > DWORD_MAX ? DWORD_MAX : ByteRangeList[ulIndex].Length.LowPart;
9566
9567                                                 __try
9568                                                 {
9569
9570                                                     if( ObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL &&
9571                                                         !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9572                                                                               &ByteRangeList[ulIndex].FileOffset,
9573                                                                               ulSize,
9574                                                                               FALSE))
9575                                                     {
9576
9577                                                         AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9578                                                                       AFS_TRACE_LEVEL_WARNING,
9579                                                                       "AFSPerformObjectInvalidation [1] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9580                                                                       ObjectInfo->FileId.Cell,
9581                                                                       ObjectInfo->FileId.Volume,
9582                                                                       ObjectInfo->FileId.Vnode,
9583                                                                       ObjectInfo->FileId.Unique));
9584
9585                                                         bPurgeOnClose = TRUE;
9586                                                     }
9587                                                     else
9588                                                     {
9589
9590                                                         bCleanExtents = TRUE;
9591                                                     }
9592                                                 }
9593                                                 __except( EXCEPTION_EXECUTE_HANDLER)
9594                                                 {
9595
9596                                                     ntStatus = GetExceptionCode();
9597
9598                                                     AFSDbgTrace(( 0,
9599                                                                   0,
9600                                                                   "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (1) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9601                                                                   ObjectInfo->FileId.Cell,
9602                                                                   ObjectInfo->FileId.Volume,
9603                                                                   ObjectInfo->FileId.Vnode,
9604                                                                   ObjectInfo->FileId.Unique,
9605                                                                   ntStatus));
9606                                                 }
9607
9608                                                 ByteRangeList[ulIndex].Length.QuadPart -= ulSize;
9609
9610                                                 ByteRangeList[ulIndex].FileOffset.QuadPart += ulSize;
9611
9612                                             } while ( ByteRangeList[ulIndex].Length.QuadPart > 0);
9613                                         }
9614                                     }
9615                                     else
9616                                     {
9617
9618                                         //
9619                                         // We couldn't allocate the memory to build the purge list
9620                                         // so just walk the extent list while holding the ExtentsList Resource.
9621                                         // This could deadlock but we do not have much choice.
9622                                         //
9623
9624                                         AFSAcquireExcl(  &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
9625                                                         TRUE);
9626                                         bExtentsLocked = TRUE;
9627
9628                                         le = ObjectInfo->Fcb->Specific.File.ExtentsLists[AFS_EXTENTS_LIST].Flink;
9629
9630                                         ulProcessCount = 0;
9631
9632                                         ulCount = (ULONG)ObjectInfo->Fcb->Specific.File.ExtentCount;
9633
9634                                         if( ulCount > 0)
9635                                         {
9636                                             pEntry = ExtentFor( le, AFS_EXTENTS_LIST );
9637
9638                                             while( ulProcessCount < ulCount)
9639                                             {
9640                                                 pEntry = ExtentFor( le, AFS_EXTENTS_LIST );
9641
9642                                                 if( !BooleanFlagOn( pEntry->Flags, AFS_EXTENT_DIRTY))
9643                                                 {
9644                                                     __try
9645                                                     {
9646                                                         if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9647                                                                                   &pEntry->FileOffset,
9648                                                                                   pEntry->Size,
9649                                                                                   FALSE))
9650                                                         {
9651
9652                                                             AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9653                                                                           AFS_TRACE_LEVEL_WARNING,
9654                                                                           "AFSPerformObjectInvalidation [2] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9655                                                                           ObjectInfo->FileId.Cell,
9656                                                                           ObjectInfo->FileId.Volume,
9657                                                                           ObjectInfo->FileId.Vnode,
9658                                                                           ObjectInfo->FileId.Unique));
9659
9660                                                             bPurgeOnClose = TRUE;
9661                                                         }
9662                                                         else
9663                                                         {
9664
9665                                                             bCleanExtents = TRUE;
9666                                                         }
9667                                                     }
9668                                                     __except( EXCEPTION_EXECUTE_HANDLER)
9669                                                     {
9670
9671                                                         ntStatus = GetExceptionCode();
9672
9673                                                         AFSDbgTrace(( 0,
9674                                                                       0,
9675                                                                       "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (2) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9676                                                                       ObjectInfo->FileId.Cell,
9677                                                                       ObjectInfo->FileId.Volume,
9678                                                                       ObjectInfo->FileId.Vnode,
9679                                                                       ObjectInfo->FileId.Unique,
9680                                                                       ntStatus));
9681                                                     }
9682                                                 }
9683
9684                                                 if( liCurrentOffset.QuadPart < pEntry->FileOffset.QuadPart)
9685                                                 {
9686
9687                                                     liFlushLength.QuadPart = pEntry->FileOffset.QuadPart - liCurrentOffset.QuadPart;
9688
9689                                                     while( liFlushLength.QuadPart > 0)
9690                                                     {
9691
9692                                                         if( liFlushLength.QuadPart > 512 * 1024000)
9693                                                         {
9694                                                             ulFlushLength = 512 * 1024000;
9695                                                         }
9696                                                         else
9697                                                         {
9698                                                             ulFlushLength = liFlushLength.LowPart;
9699                                                         }
9700
9701                                                         __try
9702                                                         {
9703                                                             if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9704                                                                                       &liCurrentOffset,
9705                                                                                       ulFlushLength,
9706                                                                                       FALSE))
9707                                                             {
9708
9709                                                                 AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9710                                                                               AFS_TRACE_LEVEL_WARNING,
9711                                                                               "AFSPerformObjectInvalidation [3] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9712                                                                               ObjectInfo->FileId.Cell,
9713                                                                               ObjectInfo->FileId.Volume,
9714                                                                               ObjectInfo->FileId.Vnode,
9715                                                                               ObjectInfo->FileId.Unique));
9716
9717                                                                 bPurgeOnClose = TRUE;
9718                                                             }
9719                                                             else
9720                                                             {
9721
9722                                                                 bCleanExtents = TRUE;
9723                                                             }
9724                                                         }
9725                                                         __except( EXCEPTION_EXECUTE_HANDLER)
9726                                                         {
9727
9728                                                             ntStatus = GetExceptionCode();
9729
9730                                                             AFSDbgTrace(( 0,
9731                                                                           0,
9732                                                                           "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (3) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9733                                                                           ObjectInfo->FileId.Cell,
9734                                                                           ObjectInfo->FileId.Volume,
9735                                                                           ObjectInfo->FileId.Vnode,
9736                                                                           ObjectInfo->FileId.Unique,
9737                                                                           ntStatus));
9738                                                         }
9739
9740                                                         liFlushLength.QuadPart -= ulFlushLength;
9741                                                     }
9742                                                 }
9743
9744                                                 liCurrentOffset.QuadPart = pEntry->FileOffset.QuadPart + pEntry->Size;
9745
9746                                                 ulProcessCount++;
9747                                                 le = le->Flink;
9748                                             }
9749                                         }
9750                                         else
9751                                         {
9752                                             __try
9753                                             {
9754                                                 if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9755                                                                           NULL,
9756                                                                           0,
9757                                                                           FALSE))
9758                                                 {
9759
9760                                                     AFSDbgTrace(( AFS_SUBSYSTEM_IO_PROCESSING,
9761                                                                   AFS_TRACE_LEVEL_WARNING,
9762                                                                   "AFSPerformObjectInvalidation [4] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9763                                                                   ObjectInfo->FileId.Cell,
9764                                                                   ObjectInfo->FileId.Volume,
9765                                                                   ObjectInfo->FileId.Vnode,
9766                                                                   ObjectInfo->FileId.Unique));
9767
9768                                                     bPurgeOnClose = TRUE;
9769                                                 }
9770                                                 else
9771                                                 {
9772
9773                                                     bCleanExtents = TRUE;
9774                                                 }
9775                                             }
9776                                             __except( EXCEPTION_EXECUTE_HANDLER)
9777                                             {
9778
9779                                                 ntStatus = GetExceptionCode();
9780
9781                                                 AFSDbgTrace(( 0,
9782                                                               0,
9783                                                               "EXCEPTION - AFSPerformObjectInvalidation CcPurgeCacheSection (4) FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9784                                                               ObjectInfo->FileId.Cell,
9785                                                               ObjectInfo->FileId.Volume,
9786                                                               ObjectInfo->FileId.Vnode,
9787                                                               ObjectInfo->FileId.Unique,
9788                                                               ntStatus));
9789                                             }
9790                                         }
9791
9792                                         if ( bPurgeOnClose)
9793                                         {
9794
9795                                             SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9796                                         }
9797                                     }
9798                                 }
9799                                 __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()))
9800                                 {
9801
9802                                     ntStatus = GetExceptionCode();
9803
9804                                     AFSDbgTrace(( 0,
9805                                                   0,
9806                                                   "EXCEPTION - AFSPerformObjectInvalidation FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9807                                                   ObjectInfo->FileId.Cell,
9808                                                   ObjectInfo->FileId.Volume,
9809                                                   ObjectInfo->FileId.Vnode,
9810                                                   ObjectInfo->FileId.Unique,
9811                                                   ntStatus));
9812                                 }
9813
9814                                 AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING|AFS_SUBSYSTEM_SECTION_OBJECT,
9815                                               AFS_TRACE_LEVEL_VERBOSE,
9816                                               "AFSPerformObjectInvalidation Releasing Fcb SectionObject lock %p EXCL %08lX\n",
9817                                               &ObjectInfo->Fcb->NPFcb->SectionObjectResource,
9818                                               PsGetCurrentThread()));
9819
9820                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->SectionObjectResource);
9821
9822                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9823
9824                                 bLocked = FALSE;
9825                             }
9826                         }
9827
9828                         if ( bExtentsLocked)
9829                         {
9830
9831                             AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9832                         }
9833
9834                         if ( bLocked)
9835                         {
9836
9837                             AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9838                         }
9839
9840                         if ( bCleanExtents)
9841                         {
9842
9843                             AFSReleaseCleanExtents( ObjectInfo->Fcb,
9844                                                     NULL);
9845                         }
9846                     }
9847                 }
9848                 else if ( ObjectInfo->FileType == AFS_FILE_TYPE_FILE)
9849                 {
9850
9851                     AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
9852                                   AFS_TRACE_LEVEL_VERBOSE,
9853                                   "AFSPerformObjectInvalidation on node type %d for FID %08lX-%08lX-%08lX-%08lX Reason DATA_VERSION FCB NULL\n",
9854                                   ObjectInfo->FileType,
9855                                   ObjectInfo->FileId.Cell,
9856                                   ObjectInfo->FileId.Volume,
9857                                   ObjectInfo->FileId.Vnode,
9858                                   ObjectInfo->FileId.Unique));
9859
9860                     SetFlag( ObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
9861                 }
9862
9863                 break;
9864             }
9865         }
9866
9867         //
9868         // Destroy the reference passed in by the caller to AFSInvalidateObject
9869         // or AFSQueueInvalidateObject
9870         //
9871
9872         AFSAcquireShared( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
9873                           TRUE);
9874
9875         lCount = AFSObjectInfoDecrement( ObjectInfo,
9876                                          AFS_OBJECT_REFERENCE_INVALIDATION);
9877
9878         AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
9879                       AFS_TRACE_LEVEL_VERBOSE,
9880                       "AFSPerformObjectInvalidation Decrement count on object %p Cnt %d\n",
9881                       ObjectInfo,
9882                       lCount));
9883
9884         AFSReleaseResource( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
9885     }
9886
9887     return ntStatus;
9888 }
9889
9890 BOOLEAN
9891 AFSIgnoreReparsePointToFile( void)
9892 {
9893     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
9894     BOOLEAN bIgnoreReparsePoint;
9895
9896     {
9897
9898         bIgnoreReparsePoint = BooleanFlagOn( pDeviceExt->Specific.RDR.ReparsePointPolicy,
9899                                              AFS_REPARSE_POINT_TO_FILE_AS_FILE);
9900     }
9901
9902     return bIgnoreReparsePoint;
9903 }