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

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011 Kernel Drivers, LLC.
   3  * Copyright (c) 2009, 2010, 2011 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,
  14  *   this list of conditions and the following disclaimer in the
  15  *   documentation
  16  *   and/or other materials provided with the distribution.
  17  * - Neither the names of Kernel Drivers, LLC and Your File System, Inc.
  18  *   nor the names of their contributors may be used to endorse or promote
  19  *   products derived from this software without specific prior written
  20  *   permission from Kernel Drivers, LLC and Your File System, Inc.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  25  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  26  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  27  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  29  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  30  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 //
  36 // File: AFSGeneric.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 //
  42 // Function: AFSExceptionFilter
  43 //
  44 // Description:
  45 //
  46 //      This function is the exception handler
  47 //
  48 // Return:
  49 //
  50 //      A status is returned for the function
  51 //
  52
  53 ULONG
  54 AFSExceptionFilter( IN CHAR *FunctionString,
  55                     IN ULONG Code,
  56                     IN PEXCEPTION_POINTERS ExceptPtrs)
  57 {
  58
  59     PEXCEPTION_RECORD ExceptRec;
  60     PCONTEXT Context;
  61
  62     __try
  63     {
  64
  65         ExceptRec = ExceptPtrs->ExceptionRecord;
  66
  67         Context = ExceptPtrs->ContextRecord;
  68
  69         AFSDbgLogMsg( 0,
  70                       0,
  71                       "AFSExceptionFilter (Library) - EXR %p CXR %p Function %s Code %08lX Address %p Routine %p\n",
  72                       ExceptRec,
  73                       Context,
  74                       FunctionString,
  75                       ExceptRec->ExceptionCode,
  76                       ExceptRec->ExceptionAddress,
  77                       (void *)AFSExceptionFilter);
  78
  79         DbgPrint("**** Exception Caught in AFS Redirector Library ****\n");
  80
  81         DbgPrint("\n\nPerform the following WnDbg Cmds:\n");
  82         DbgPrint("\n\t.exr %p ;  .cxr %p\n\n", ExceptRec, Context);
  83
  84         DbgPrint("**** Exception Complete from AFS Redirector Library ****\n");
  85
  86         if( BooleanFlagOn( AFSDebugFlags, AFS_DBG_BUGCHECK_EXCEPTION))
  87         {
  88
  89             KeBugCheck( (ULONG)-2);
  90         }
  91         else
  92         {
  93
  94             AFSBreakPoint();
  95         }
  96     }
  97     __except( EXCEPTION_EXECUTE_HANDLER)
  98     {
  99
 100         NOTHING;
 101     }
 102
 103     return EXCEPTION_EXECUTE_HANDLER;
 104 }
 105
 106 //
 107 // Function: AFSLibExAllocatePoolWithTag()
 108 //
 109 // Purpose: Allocate Pool Memory.  If BugCheck Exception flag
 110 //          is configured on, then bugcheck the system if
 111 //          a memory allocation fails.  The routine should be
 112 //          used for all memory allocations that are to be freed
 113 //          when the library is unloaded.  Memory allocations that
 114 //          are to survive library unload and reload should be
 115 //          performed using AFSExAllocatePoolWithTag() which is
 116 //          provided by the AFS Framework.
 117 //
 118 // Parameters:
 119 //                POOL_TYPE PoolType - Paged or NonPaged
 120 //                SIZE_T NumberOfBytes - requested allocation size
 121 //                ULONG  Tag - Pool Allocation Tag to be applied for tracking
 122 //
 123 // Return:
 124 //                void * - the memory allocation
 125 //
 126
 127 void *
 128 AFSLibExAllocatePoolWithTag( IN POOL_TYPE  PoolType,
 129                              IN SIZE_T  NumberOfBytes,
 130                              IN ULONG  Tag)
 131 {
 132
 133     void *pBuffer = NULL;
 134
 135     pBuffer = ExAllocatePoolWithTag( PoolType,
 136                                      NumberOfBytes,
 137                                      Tag);
 138
 139     if( pBuffer == NULL)
 140     {
 141
 142         if( BooleanFlagOn( AFSDebugFlags, AFS_DBG_BUGCHECK_EXCEPTION))
 143         {
 144
 145             KeBugCheck( (ULONG)-2);
 146         }
 147         else
 148         {
 149
 150             AFSDbgLogMsg( 0,
 151                           0,
 152                           "AFSLibExAllocatePoolWithTag failure Type %08lX Size %08lX Tag %08lX %08lX\n",
 153                           PoolType,
 154                           NumberOfBytes,
 155                           Tag,
 156                           PsGetCurrentThread());
 157
 158             AFSBreakPoint();
 159         }
 160     }
 161
 162     return pBuffer;
 163 }
 164
 165 //
 166 // Function: AFSAcquireExcl()
 167 //
 168 // Purpose: Called to acquire a resource exclusive with optional wait
 169 //
 170 // Parameters:
 171 //                PERESOURCE Resource - Resource to acquire
 172 //                BOOLEAN Wait - Whether to block
 173 //
 174 // Return:
 175 //                BOOLEAN - Whether the mask was acquired
 176 //
 177
 178 BOOLEAN
 179 AFSAcquireExcl( IN PERESOURCE Resource,
 180                 IN BOOLEAN wait)
 181 {
 182
 183     BOOLEAN bStatus = FALSE;
 184
 185     //
 186     // Normal kernel APCs must be disabled before calling
 187     // ExAcquireResourceExclusiveLite. Otherwise a bugcheck occurs.
 188     //
 189
 190     KeEnterCriticalRegion();
 191
 192     bStatus = ExAcquireResourceExclusiveLite( Resource,
 193                                               wait);
 194
 195     if( !bStatus)
 196     {
 197
 198         KeLeaveCriticalRegion();
 199     }
 200
 201     return bStatus;
 202 }
 203
 204 BOOLEAN
 205 AFSAcquireSharedStarveExclusive( IN PERESOURCE Resource,
 206                                  IN BOOLEAN Wait)
 207 {
 208
 209     BOOLEAN bStatus = FALSE;
 210
 211     KeEnterCriticalRegion();
 212
 213     bStatus = ExAcquireSharedStarveExclusive( Resource,
 214                                               Wait);
 215
 216     if( !bStatus)
 217     {
 218
 219         KeLeaveCriticalRegion();
 220     }
 221
 222     return bStatus;
 223 }
 224
 225 //
 226 // Function: AFSAcquireShared()
 227 //
 228 // Purpose: Called to acquire a resource shared with optional wait
 229 //
 230 // Parameters:
 231 //                PERESOURCE Resource - Resource to acquire
 232 //                BOOLEAN Wait - Whether to block
 233 //
 234 // Return:
 235 //                BOOLEAN - Whether the mask was acquired
 236 //
 237
 238 BOOLEAN
 239 AFSAcquireShared( IN PERESOURCE Resource,
 240                   IN BOOLEAN wait)
 241 {
 242
 243     BOOLEAN bStatus = FALSE;
 244
 245     KeEnterCriticalRegion();
 246
 247     bStatus = ExAcquireResourceSharedLite( Resource,
 248                                            wait);
 249
 250     if( !bStatus)
 251     {
 252
 253         KeLeaveCriticalRegion();
 254     }
 255
 256     return bStatus;
 257 }
 258
 259 //
 260 // Function: AFSReleaseResource()
 261 //
 262 // Purpose: Called to release a resource
 263 //
 264 // Parameters:
 265 //                PERESOURCE Resource - Resource to release
 266 //
 267 // Return:
 268 //                None
 269 //
 270
 271 void
 272 AFSReleaseResource( IN PERESOURCE Resource)
 273 {
 274
 275     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 276                   AFS_TRACE_LEVEL_VERBOSE,
 277                   "AFSReleaseResource Releasing lock %08lX Thread %08lX\n",
 278                   Resource,
 279                   PsGetCurrentThread());
 280
 281     ExReleaseResourceLite( Resource);
 282
 283     KeLeaveCriticalRegion();
 284
 285     return;
 286 }
 287
 288 void
 289 AFSConvertToShared( IN PERESOURCE Resource)
 290 {
 291
 292     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 293                   AFS_TRACE_LEVEL_VERBOSE,
 294                   "AFSConvertToShared Converting lock %08lX Thread %08lX\n",
 295                   Resource,
 296                   PsGetCurrentThread());
 297
 298     ExConvertExclusiveToSharedLite( Resource);
 299
 300     return;
 301 }
 302
 303 //
 304 // Function: AFSCompleteRequest
 305 //
 306 // Description:
 307 //
 308 //      This function completes irps
 309 //
 310 // Return:
 311 //
 312 //      A status is returned for the function
 313 //
 314
 315 void
 316 AFSCompleteRequest( IN PIRP Irp,
 317                     IN ULONG Status)
 318 {
 319
 320     Irp->IoStatus.Status = Status;
 321
 322     IoCompleteRequest( Irp,
 323                        IO_NO_INCREMENT);
 324
 325     return;
 326 }
 327
 328 //
 329 // Function: AFSGenerateCRC
 330 //
 331 // Description:
 332 //
 333 //      Given a device and filename this function generates a CRC
 334 //
 335 // Return:
 336 //
 337 //      A status is returned for the function
 338 //
 339
 340 ULONG
 341 AFSGenerateCRC( IN PUNICODE_STRING FileName,
 342                 IN BOOLEAN UpperCaseName)
 343 {
 344
 345     ULONG ulCRC = 0;
 346     NTSTATUS ntStatus = STATUS_SUCCESS;
 347
 348     ntStatus = RtlHashUnicodeString( FileName,
 349                                      UpperCaseName,
 350                                      HASH_STRING_ALGORITHM_DEFAULT,
 351                                      &ulCRC);
 352
 353     if( !NT_SUCCESS( ntStatus))
 354     {
 355         ulCRC = 0;
 356     }
 357
 358     return ulCRC;
 359 }
 360
 361 void *
 362 AFSLockSystemBuffer( IN PIRP Irp,
 363                      IN ULONG Length)
 364 {
 365
 366     NTSTATUS Status = STATUS_SUCCESS;
 367     void *pAddress = NULL;
 368
 369     if( Irp->MdlAddress != NULL)
 370     {
 371
 372         pAddress = MmGetSystemAddressForMdlSafe( Irp->MdlAddress,
 373                                                  NormalPagePriority);
 374     }
 375     else if( Irp->AssociatedIrp.SystemBuffer != NULL)
 376     {
 377
 378         pAddress = Irp->AssociatedIrp.SystemBuffer;
 379     }
 380     else if( Irp->UserBuffer != NULL)
 381     {
 382
 383         Irp->MdlAddress = IoAllocateMdl( Irp->UserBuffer,
 384                                          Length,
 385                                          FALSE,
 386                                          FALSE,
 387                                          Irp);
 388
 389         if( Irp->MdlAddress != NULL)
 390         {
 391
 392             //
 393             //  Lock the new Mdl in memory.
 394             //
 395
 396             __try
 397             {
 398                 PIO_STACK_LOCATION pIoStack;
 399                 pIoStack = IoGetCurrentIrpStackLocation( Irp);
 400
 401
 402                 MmProbeAndLockPages( Irp->MdlAddress, KernelMode,
 403                                      (pIoStack->MajorFunction == IRP_MJ_READ) ? IoWriteAccess : IoReadAccess);
 404
 405                 pAddress = MmGetSystemAddressForMdlSafe( Irp->MdlAddress, NormalPagePriority );
 406
 407             }
 408             __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
 409             {
 410
 411                 AFSDumpTraceFilesFnc();
 412
 413                 IoFreeMdl( Irp->MdlAddress );
 414                 Irp->MdlAddress = NULL;
 415                 pAddress = NULL;
 416             }
 417         }
 418     }
 419
 420     return pAddress;
 421 }
 422
 423 void *
 424 AFSLockUserBuffer( IN void *UserBuffer,
 425                    IN ULONG BufferLength,
 426                                    OUT MDL ** Mdl)
 427 {
 428
 429     NTSTATUS ntStatus = STATUS_SUCCESS;
 430     void *pAddress = NULL;
 431     MDL *pMdl = NULL;
 432
 433     __Enter
 434     {
 435
 436         pMdl = IoAllocateMdl( UserBuffer,
 437                               BufferLength,
 438                               FALSE,
 439                               FALSE,
 440                               NULL);
 441
 442             if( pMdl == NULL)
 443             {
 444
 445                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 446             }
 447
 448         //
 449         //  Lock the new Mdl in memory.
 450         //
 451
 452         __try
 453         {
 454
 455             MmProbeAndLockPages( pMdl,
 456                                  KernelMode,
 457                                  IoWriteAccess);
 458
 459             pAddress = MmGetSystemAddressForMdlSafe( pMdl,
 460                                                      NormalPagePriority);
 461         }
 462         __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
 463         {
 464
 465             AFSDumpTraceFilesFnc();
 466
 467             IoFreeMdl( pMdl);
 468             pMdl = NULL;
 469             pAddress = NULL;
 470         }
 471
 472         if( pMdl != NULL)
 473         {
 474
 475             *Mdl = pMdl;
 476         }
 477
 478 try_exit:
 479
 480         NOTHING;
 481     }
 482
 483     return pAddress;
 484 }
 485
 486 void *
 487 AFSMapToService( IN PIRP Irp,
 488                  IN ULONG ByteCount)
 489 {
 490
 491     NTSTATUS ntStatus = STATUS_SUCCESS;
 492     void *pMappedBuffer = NULL;
 493     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 494     KAPC stApcState;
 495
 496     __Enter
 497     {
 498
 499         if( pDevExt->Specific.Control.ServiceProcess == NULL)
 500         {
 501
 502             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
 503         }
 504
 505         if( Irp->MdlAddress == NULL)
 506         {
 507
 508             if( AFSLockSystemBuffer( Irp,
 509                                      ByteCount) == NULL)
 510             {
 511
 512                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 513             }
 514         }
 515
 516         //
 517         // Attach to the service process for mapping
 518         //
 519
 520         KeStackAttachProcess( pDevExt->Specific.Control.ServiceProcess,
 521                               (PRKAPC_STATE)&stApcState);
 522
 523         pMappedBuffer = MmMapLockedPagesSpecifyCache( Irp->MdlAddress,
 524                                                       UserMode,
 525                                                       MmCached,
 526                                                       NULL,
 527                                                       FALSE,
 528                                                       NormalPagePriority);
 529
 530         KeUnstackDetachProcess( (PRKAPC_STATE)&stApcState);
 531
 532 try_exit:
 533
 534         NOTHING;
 535     }
 536
 537     return pMappedBuffer;
 538 }
 539
 540 NTSTATUS
 541 AFSUnmapServiceMappedBuffer( IN void *MappedBuffer,
 542                              IN PMDL Mdl)
 543 {
 544
 545     NTSTATUS ntStatus = STATUS_SUCCESS;
 546     void *pMappedBuffer = NULL;
 547     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 548     KAPC stApcState;
 549
 550     __Enter
 551     {
 552
 553         if( pDevExt->Specific.Control.ServiceProcess == NULL)
 554         {
 555
 556             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
 557         }
 558
 559         if( Mdl != NULL)
 560         {
 561
 562             //
 563             // Attach to the service process for mapping
 564             //
 565
 566             KeStackAttachProcess( pDevExt->Specific.Control.ServiceProcess,
 567                                   (PRKAPC_STATE)&stApcState);
 568
 569             MmUnmapLockedPages( MappedBuffer,
 570                                 Mdl);
 571
 572             KeUnstackDetachProcess( (PRKAPC_STATE)&stApcState);
 573         }
 574
 575 try_exit:
 576
 577         NOTHING;
 578     }
 579
 580     return ntStatus;
 581 }
 582
 583 NTSTATUS
 584 AFSInitializeLibraryDevice()
 585 {
 586
 587     NTSTATUS ntStatus = STATUS_SUCCESS;
 588     AFSDeviceExt *pDeviceExt = NULL;
 589
 590     __Enter
 591     {
 592
 593         pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 594
 595         //
 596         // The PIOCtl file name
 597         //
 598
 599         RtlInitUnicodeString( &AFSPIOCtlName,
 600                               AFS_PIOCTL_FILE_INTERFACE_NAME);
 601
 602         //
 603         // And the global root share name
 604         //
 605
 606         RtlInitUnicodeString( &AFSGlobalRootName,
 607                               AFS_GLOBAL_ROOT_SHARE_NAME);
 608
 609     }
 610
 611     return ntStatus;
 612 }
 613
 614 NTSTATUS
 615 AFSRemoveLibraryDevice()
 616 {
 617
 618     NTSTATUS ntStatus = STATUS_SUCCESS;
 619
 620     __Enter
 621     {
 622
 623     }
 624
 625     return ntStatus;
 626 }
 627
 628 NTSTATUS
 629 AFSDefaultDispatch( IN PDEVICE_OBJECT DeviceObject,
 630                     IN PIRP Irp)
 631 {
 632
 633     NTSTATUS            ntStatus = STATUS_INVALID_DEVICE_REQUEST;
 634     PIO_STACK_LOCATION  pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 635
 636     AFSCompleteRequest( Irp,
 637                         ntStatus);
 638
 639     return ntStatus;
 640 }
 641
 642 NTSTATUS
 643 AFSInitializeGlobalDirectoryEntries()
 644 {
 645
 646     NTSTATUS ntStatus = STATUS_SUCCESS;
 647     AFSDirectoryCB *pDirNode = NULL;
 648     ULONG ulEntryLength = 0;
 649     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 650     AFSObjectInfoCB *pObjectInfoCB = NULL;
 651     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
 652     LONG lCount;
 653
 654     __Enter
 655     {
 656
 657         //
 658         // Initialize the global . entry
 659         //
 660
 661         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
 662                                                0);
 663
 664         if( pObjectInfoCB == NULL)
 665         {
 666
 667             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 668                           AFS_TRACE_LEVEL_ERROR,
 669                           "AFSInitializeGlobalDirectory AFSAllocateObjectInfo failure %08lX\n",
 670                           ntStatus);
 671
 672             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 673         }
 674
 675         lCount = InterlockedIncrement( &pObjectInfoCB->ObjectReferenceCount);
 676
 677         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 678                       AFS_TRACE_LEVEL_VERBOSE,
 679                       "AFSInitializeGlobalDirectoryEntries Increment count on object %08lX Cnt %d\n",
 680                       pObjectInfoCB,
 681                       lCount);
 682
 683         ntStatus = STATUS_SUCCESS;
 684
 685         ulEntryLength = sizeof( AFSDirectoryCB) +
 686                                      sizeof( WCHAR);
 687
 688         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
 689                                                                   ulEntryLength,
 690                                                                   AFS_DIR_ENTRY_TAG);
 691
 692         if( pDirNode == NULL)
 693         {
 694
 695             AFSDeleteObjectInfo( pObjectInfoCB);
 696
 697             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 698                           AFS_TRACE_LEVEL_ERROR,
 699                           "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_TAG allocation failure\n");
 700
 701             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 702         }
 703
 704         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 705                                                                                    sizeof( AFSNonPagedDirectoryCB),
 706                                                                                    AFS_DIR_ENTRY_NP_TAG);
 707
 708         if( pNonPagedDirEntry == NULL)
 709         {
 710
 711             ExFreePool( pDirNode);
 712
 713             AFSDeleteObjectInfo( pObjectInfoCB);
 714
 715             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 716                           AFS_TRACE_LEVEL_ERROR,
 717                           "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_NP_TAG allocation failure\n");
 718
 719             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 720         }
 721
 722         RtlZeroMemory( pDirNode,
 723                        ulEntryLength);
 724
 725         RtlZeroMemory( pNonPagedDirEntry,
 726                        sizeof( AFSNonPagedDirectoryCB));
 727
 728         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
 729
 730         pDirNode->NonPaged = pNonPagedDirEntry;
 731
 732         pDirNode->ObjectInformation = pObjectInfoCB;
 733
 734         //
 735         // Set valid entry
 736         //
 737
 738         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE | AFS_DIR_ENTRY_FAKE | AFS_DIR_ENTRY_VALID);
 739
 740         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_DOT_INDEX;
 741
 742         //
 743         // Setup the names in the entry
 744         //
 745
 746         pDirNode->NameInformation.FileName.Length = sizeof( WCHAR);
 747
 748         pDirNode->NameInformation.FileName.MaximumLength = sizeof( WCHAR);
 749
 750         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
 751
 752         pDirNode->NameInformation.FileName.Buffer[ 0] = L'.';
 753
 754         //
 755         // Populate the rest of the data
 756         //
 757
 758         pObjectInfoCB->FileType = AFS_FILE_TYPE_DIRECTORY;
 759
 760         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 761
 762         AFSGlobalDotDirEntry = pDirNode;
 763
 764         //
 765         // Now the .. entry
 766         //
 767
 768         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
 769                                                0);
 770
 771         if( pObjectInfoCB == NULL)
 772         {
 773
 774             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 775                           AFS_TRACE_LEVEL_ERROR,
 776                           "AFSInitializeGlobalDirectory AFSAllocateObjectInfo (2) failure %08lX\n",
 777                           ntStatus);
 778
 779             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 780         }
 781
 782         lCount = InterlockedIncrement( &pObjectInfoCB->ObjectReferenceCount);
 783
 784         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 785                       AFS_TRACE_LEVEL_VERBOSE,
 786                       "AFSInitializeGlobalDirectoryEntries Increment count on object %08lX Cnt %d\n",
 787                       pObjectInfoCB,
 788                       lCount);
 789
 790         ntStatus = STATUS_SUCCESS;
 791
 792         ulEntryLength = sizeof( AFSDirectoryCB) +
 793                                      ( 2 * sizeof( WCHAR));
 794
 795         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
 796                                                                   ulEntryLength,
 797                                                                   AFS_DIR_ENTRY_TAG);
 798
 799         if( pDirNode == NULL)
 800         {
 801
 802             AFSDeleteObjectInfo( pObjectInfoCB);
 803
 804             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 805         }
 806
 807         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 808                                                                                    sizeof( AFSNonPagedDirectoryCB),
 809                                                                                    AFS_DIR_ENTRY_NP_TAG);
 810
 811         if( pNonPagedDirEntry == NULL)
 812         {
 813
 814             ExFreePool( pDirNode);
 815
 816             AFSDeleteObjectInfo( pObjectInfoCB);
 817
 818             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 819         }
 820
 821         RtlZeroMemory( pDirNode,
 822                        ulEntryLength);
 823
 824         RtlZeroMemory( pNonPagedDirEntry,
 825                        sizeof( AFSNonPagedDirectoryCB));
 826
 827         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
 828
 829         pDirNode->NonPaged = pNonPagedDirEntry;
 830
 831         pDirNode->ObjectInformation = pObjectInfoCB;
 832
 833         //
 834         // Set valid entry
 835         //
 836
 837         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE | AFS_DIR_ENTRY_FAKE | AFS_DIR_ENTRY_VALID);
 838
 839         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_DOT_DOT_INDEX;
 840
 841         //
 842         // Setup the names in the entry
 843         //
 844
 845         pDirNode->NameInformation.FileName.Length = 2 * sizeof( WCHAR);
 846
 847         pDirNode->NameInformation.FileName.MaximumLength = 2 * sizeof( WCHAR);
 848
 849         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
 850
 851         pDirNode->NameInformation.FileName.Buffer[ 0] = L'.';
 852
 853         pDirNode->NameInformation.FileName.Buffer[ 1] = L'.';
 854
 855         //
 856         // Populate the rest of the data
 857         //
 858
 859         pObjectInfoCB->FileType = AFS_FILE_TYPE_DIRECTORY;
 860
 861         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 862
 863         AFSGlobalDotDotDirEntry = pDirNode;
 864
 865 try_exit:
 866
 867         if( !NT_SUCCESS( ntStatus))
 868         {
 869
 870             if( AFSGlobalDotDirEntry != NULL)
 871             {
 872
 873                 AFSDeleteObjectInfo( AFSGlobalDotDirEntry->ObjectInformation);
 874
 875                 ExDeleteResourceLite( &AFSGlobalDotDirEntry->NonPaged->Lock);
 876
 877                 ExFreePool( AFSGlobalDotDirEntry->NonPaged);
 878
 879                 ExFreePool( AFSGlobalDotDirEntry);
 880
 881                 AFSGlobalDotDirEntry = NULL;
 882             }
 883
 884             if( AFSGlobalDotDotDirEntry != NULL)
 885             {
 886
 887                 AFSDeleteObjectInfo( AFSGlobalDotDotDirEntry->ObjectInformation);
 888
 889                 ExDeleteResourceLite( &AFSGlobalDotDotDirEntry->NonPaged->Lock);
 890
 891                 ExFreePool( AFSGlobalDotDotDirEntry->NonPaged);
 892
 893                 ExFreePool( AFSGlobalDotDotDirEntry);
 894
 895                 AFSGlobalDotDotDirEntry = NULL;
 896             }
 897         }
 898     }
 899
 900     return ntStatus;
 901 }
 902
 903 AFSDirectoryCB *
 904 AFSInitDirEntry( IN AFSObjectInfoCB *ParentObjectInfo,
 905                  IN PUNICODE_STRING FileName,
 906                  IN PUNICODE_STRING TargetName,
 907                  IN AFSDirEnumEntry *DirEnumEntry,
 908                  IN ULONG FileIndex)
 909 {
 910
 911     AFSDirectoryCB *pDirNode = NULL;
 912     NTSTATUS ntStatus = STATUS_SUCCESS;
 913     ULONG ulEntryLength = 0;
 914     AFSDirEnumEntry *pDirEnumCB = NULL;
 915     AFSFileID stTargetFileID;
 916     AFSFcb *pVcb = NULL;
 917     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 918     AFSObjectInfoCB *pObjectInfoCB = NULL;
 919     BOOLEAN bAllocatedObjectCB = FALSE;
 920     ULONGLONG ullIndex = 0;
 921     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
 922     LONG lCount;
 923
 924     __Enter
 925     {
 926
 927         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 928                       AFS_TRACE_LEVEL_VERBOSE,
 929                       "AFSInitDirEntry Initializing entry %wZ parent FID %08lX-%08lX-%08lX-%08lX\n",
 930                       FileName,
 931                       ParentObjectInfo->FileId.Cell,
 932                       ParentObjectInfo->FileId.Volume,
 933                       ParentObjectInfo->FileId.Vnode,
 934                       ParentObjectInfo->FileId.Unique);
 935
 936         //
 937         // First thing is to locate/create our object information block
 938         // for this entry
 939         //
 940
 941         AFSAcquireExcl( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
 942                         TRUE);
 943
 944         ullIndex = AFSCreateLowIndex( &DirEnumEntry->FileId);
 945
 946         ntStatus = AFSLocateHashEntry( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
 947                                        ullIndex,
 948                                        (AFSBTreeEntry **)&pObjectInfoCB);
 949
 950         if( !NT_SUCCESS( ntStatus) ||
 951             pObjectInfoCB == NULL)
 952         {
 953
 954             //
 955             // Allocate our object info cb
 956             //
 957
 958             pObjectInfoCB = AFSAllocateObjectInfo( ParentObjectInfo,
 959                                                    ullIndex);
 960
 961             if( pObjectInfoCB == NULL)
 962             {
 963
 964                 AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
 965
 966                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 967             }
 968
 969             bAllocatedObjectCB = TRUE;
 970
 971             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 972                           AFS_TRACE_LEVEL_VERBOSE,
 973                           "AFSInitDirEntry initialized object %08lX Parent Object %08lX for %wZ\n",
 974                           pObjectInfoCB,
 975                           ParentObjectInfo,
 976                           FileName);
 977         }
 978
 979         lCount = InterlockedIncrement( &pObjectInfoCB->ObjectReferenceCount);
 980
 981         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 982                       AFS_TRACE_LEVEL_VERBOSE,
 983                       "AFSInitDirEntry Increment count on object %08lX Cnt %d\n",
 984                       pObjectInfoCB,
 985                       lCount);
 986
 987         AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
 988
 989         ntStatus = STATUS_SUCCESS;
 990
 991         ulEntryLength = sizeof( AFSDirectoryCB) +
 992                                      FileName->Length;
 993
 994         if( TargetName != NULL)
 995         {
 996
 997             ulEntryLength += TargetName->Length;
 998         }
 999
1000         pDirNode = (AFSDirectoryCB *)AFSExAllocatePoolWithTag( PagedPool,
1001                                                                ulEntryLength,
1002                                                                AFS_DIR_ENTRY_TAG);
1003
1004         if( pDirNode == NULL)
1005         {
1006
1007             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1008         }
1009
1010         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSExAllocatePoolWithTag( NonPagedPool,
1011                                                                                 sizeof( AFSNonPagedDirectoryCB),
1012                                                                                 AFS_DIR_ENTRY_NP_TAG);
1013
1014         if( pNonPagedDirEntry == NULL)
1015         {
1016
1017             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1018         }
1019
1020         RtlZeroMemory( pDirNode,
1021                        ulEntryLength);
1022
1023         RtlZeroMemory( pNonPagedDirEntry,
1024                        sizeof( AFSNonPagedDirectoryCB));
1025
1026         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
1027
1028         pDirNode->NonPaged = pNonPagedDirEntry;
1029
1030         pDirNode->ObjectInformation = pObjectInfoCB;
1031
1032         //
1033         // Set valid entry and NOT_IN_PARENT flag
1034         //
1035
1036         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
1037
1038         pDirNode->FileIndex = FileIndex;
1039
1040         //
1041         // Setup the names in the entry
1042         //
1043
1044         if( FileName->Length > 0)
1045         {
1046
1047             pDirNode->NameInformation.FileName.Length = FileName->Length;
1048
1049             pDirNode->NameInformation.FileName.MaximumLength = FileName->Length;
1050
1051             pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
1052
1053             RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
1054                            FileName->Buffer,
1055                            pDirNode->NameInformation.FileName.Length);
1056
1057             //
1058             // Create a CRC for the file
1059             //
1060
1061             pDirNode->CaseSensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
1062                                                                          FALSE);
1063
1064             pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
1065                                                                            TRUE);
1066         }
1067
1068         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1069                       AFS_TRACE_LEVEL_VERBOSE,
1070                       "AFSInitDirEntry Initialized DE %p for %wZ in parent FID %08lX-%08lX-%08lX-%08lX\n",
1071                       pDirNode,
1072                       FileName,
1073                       ParentObjectInfo->FileId.Cell,
1074                       ParentObjectInfo->FileId.Volume,
1075                       ParentObjectInfo->FileId.Vnode,
1076                       ParentObjectInfo->FileId.Unique);
1077
1078         if( TargetName != NULL &&
1079             TargetName->Length > 0)
1080         {
1081
1082             pDirNode->NameInformation.TargetName.Length = TargetName->Length;
1083
1084             pDirNode->NameInformation.TargetName.MaximumLength = pDirNode->NameInformation.TargetName.Length;
1085
1086             pDirNode->NameInformation.TargetName.Buffer = (WCHAR *)((char *)pDirNode +
1087                                                                             sizeof( AFSDirectoryCB) +
1088                                                                             pDirNode->NameInformation.FileName.Length);
1089
1090             RtlCopyMemory( pDirNode->NameInformation.TargetName.Buffer,
1091                            TargetName->Buffer,
1092                            pDirNode->NameInformation.TargetName.Length);
1093         }
1094
1095         //
1096         // If we allocated the object information cb then update the information
1097         //
1098
1099         if( bAllocatedObjectCB)
1100         {
1101
1102             //
1103             // Populate the rest of the data
1104             //
1105
1106             pObjectInfoCB->FileId = DirEnumEntry->FileId;
1107
1108             pObjectInfoCB->TargetFileId = DirEnumEntry->TargetFileId;
1109
1110             pObjectInfoCB->FileType = DirEnumEntry->FileType;
1111
1112             pObjectInfoCB->CreationTime = DirEnumEntry->CreationTime;
1113
1114             pObjectInfoCB->LastAccessTime = DirEnumEntry->LastAccessTime;
1115
1116             pObjectInfoCB->LastWriteTime = DirEnumEntry->LastWriteTime;
1117
1118             pObjectInfoCB->ChangeTime = DirEnumEntry->ChangeTime;
1119
1120             pObjectInfoCB->EndOfFile = DirEnumEntry->EndOfFile;
1121
1122             pObjectInfoCB->AllocationSize = DirEnumEntry->AllocationSize;
1123
1124             pObjectInfoCB->FileAttributes = DirEnumEntry->FileAttributes;
1125
1126             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1127             {
1128
1129                 pObjectInfoCB->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1130             }
1131
1132             if (pObjectInfoCB->FileType == AFS_FILE_TYPE_SYMLINK ||
1133                 pObjectInfoCB->FileType == AFS_FILE_TYPE_DFSLINK)
1134             {
1135
1136                 pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1137             }
1138
1139             pObjectInfoCB->EaSize = DirEnumEntry->EaSize;
1140
1141             //
1142             // Object specific information
1143             //
1144
1145             pObjectInfoCB->Links = DirEnumEntry->Links;
1146
1147             pObjectInfoCB->Expiration = DirEnumEntry->Expiration;
1148
1149             pObjectInfoCB->DataVersion = DirEnumEntry->DataVersion;
1150
1151             //
1152             // Check for the case where we have a filetype of SymLink but both the TargetFid and the
1153             // TargetName are empty. In this case set the filetype to zero so we evaluate it later in
1154             // the code
1155             //
1156
1157             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_SYMLINK &&
1158                 pObjectInfoCB->TargetFileId.Vnode == 0 &&
1159                 pObjectInfoCB->TargetFileId.Unique == 0 &&
1160                 pDirNode->NameInformation.TargetName.Length == 0)
1161             {
1162
1163                 //
1164                 // This will ensure we perform a validation on the node
1165                 //
1166
1167                 pObjectInfoCB->FileType = AFS_FILE_TYPE_UNKNOWN;
1168             }
1169
1170             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_UNKNOWN)
1171             {
1172
1173                 SetFlag( pObjectInfoCB->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED);
1174             }
1175         }
1176
1177 try_exit:
1178
1179         if( !NT_SUCCESS( ntStatus))
1180         {
1181
1182             if( pNonPagedDirEntry != NULL)
1183             {
1184
1185                 ExDeleteResourceLite( &pNonPagedDirEntry->Lock);
1186
1187                 AFSExFreePoolWithTag( pNonPagedDirEntry, AFS_DIR_ENTRY_NP_TAG);
1188             }
1189
1190             if( pDirNode != NULL)
1191             {
1192
1193                 AFSExFreePoolWithTag( pDirNode, AFS_DIR_ENTRY_TAG);
1194
1195                 pDirNode = NULL;
1196             }
1197
1198             //
1199             // Dereference our object info block if we have one
1200             //
1201
1202             if( pObjectInfoCB != NULL)
1203             {
1204
1205                 lCount = InterlockedDecrement( &pObjectInfoCB->ObjectReferenceCount);
1206
1207                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
1208                               AFS_TRACE_LEVEL_VERBOSE,
1209                               "AFSInitDirEntry Decrement count on object %08lX Cnt %d\n",
1210                               pObjectInfoCB,
1211                               lCount);
1212
1213                 if( bAllocatedObjectCB)
1214                 {
1215
1216                     ASSERT( pObjectInfoCB->ObjectReferenceCount == 0);
1217
1218                     AFSDeleteObjectInfo( pObjectInfoCB);
1219                 }
1220             }
1221         }
1222     }
1223
1224     return pDirNode;
1225 }
1226
1227 BOOLEAN
1228 AFSCheckForReadOnlyAccess( IN ACCESS_MASK DesiredAccess,
1229                            IN BOOLEAN DirectoryEntry)
1230 {
1231
1232     BOOLEAN bReturn = TRUE;
1233     ACCESS_MASK stAccessMask = 0;
1234
1235     //
1236     // Get rid of anything we don't know about
1237     //
1238
1239     DesiredAccess = (DesiredAccess   &
1240                           ( DELETE |
1241                             READ_CONTROL |
1242                             WRITE_OWNER |
1243                             WRITE_DAC |
1244                             SYNCHRONIZE |
1245                             ACCESS_SYSTEM_SECURITY |
1246                             FILE_WRITE_DATA |
1247                             FILE_READ_EA |
1248                             FILE_WRITE_EA |
1249                             FILE_READ_ATTRIBUTES |
1250                             FILE_WRITE_ATTRIBUTES |
1251                             FILE_LIST_DIRECTORY |
1252                             FILE_TRAVERSE |
1253                             FILE_DELETE_CHILD |
1254                             FILE_APPEND_DATA));
1255
1256     //
1257     // Our 'read only' access mask. These are the accesses we will
1258     // allow for a read only file
1259     //
1260
1261     stAccessMask = DELETE |
1262                         READ_CONTROL |
1263                         WRITE_OWNER |
1264                         WRITE_DAC |
1265                         SYNCHRONIZE |
1266                         ACCESS_SYSTEM_SECURITY |
1267                         FILE_READ_DATA |
1268                         FILE_READ_EA |
1269                         FILE_WRITE_EA |
1270                         FILE_READ_ATTRIBUTES |
1271                         FILE_WRITE_ATTRIBUTES |
1272                         FILE_EXECUTE |
1273                         FILE_LIST_DIRECTORY |
1274                         FILE_TRAVERSE;
1275
1276     //
1277     // For a directory, add in the directory specific accesses
1278     //
1279
1280     if( DirectoryEntry)
1281     {
1282
1283         stAccessMask |= FILE_ADD_SUBDIRECTORY |
1284                                 FILE_ADD_FILE |
1285                                 FILE_DELETE_CHILD;
1286     }
1287
1288     if( FlagOn( DesiredAccess, ~stAccessMask))
1289     {
1290
1291         //
1292         // A write access is set ...
1293         //
1294
1295         bReturn = FALSE;
1296     }
1297
1298     return bReturn;
1299 }
1300
1301 NTSTATUS
1302 AFSEvaluateNode( IN GUID *AuthGroup,
1303                  IN AFSDirectoryCB *DirEntry)
1304 {
1305
1306     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1307     NTSTATUS ntStatus = STATUS_SUCCESS;
1308     AFSDirEnumEntry *pDirEntry = NULL;
1309     UNICODE_STRING uniTargetName;
1310
1311     __Enter
1312     {
1313
1314         ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
1315                                           AuthGroup,
1316                                           FALSE,
1317                                           &pDirEntry);
1318
1319         if( !NT_SUCCESS( ntStatus))
1320         {
1321
1322             try_return( ntStatus);
1323         }
1324
1325         DirEntry->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
1326
1327         DirEntry->ObjectInformation->Expiration = pDirEntry->Expiration;
1328
1329         DirEntry->ObjectInformation->DataVersion = pDirEntry->DataVersion;
1330
1331         DirEntry->ObjectInformation->FileType = pDirEntry->FileType;
1332
1333         DirEntry->ObjectInformation->CreationTime = pDirEntry->CreationTime;
1334
1335         DirEntry->ObjectInformation->LastAccessTime = pDirEntry->LastAccessTime;
1336
1337         DirEntry->ObjectInformation->LastWriteTime = pDirEntry->LastWriteTime;
1338
1339         DirEntry->ObjectInformation->ChangeTime = pDirEntry->ChangeTime;
1340
1341         DirEntry->ObjectInformation->EndOfFile = pDirEntry->EndOfFile;
1342
1343         DirEntry->ObjectInformation->AllocationSize = pDirEntry->AllocationSize;
1344
1345         DirEntry->ObjectInformation->FileAttributes = pDirEntry->FileAttributes;
1346
1347         if( pDirEntry->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1348         {
1349
1350             DirEntry->ObjectInformation->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1351         }
1352
1353         if( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK ||
1354             pDirEntry->FileType == AFS_FILE_TYPE_DFSLINK)
1355         {
1356
1357             DirEntry->ObjectInformation->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1358         }
1359
1360         DirEntry->ObjectInformation->EaSize = pDirEntry->EaSize;
1361
1362         DirEntry->ObjectInformation->Links = pDirEntry->Links;
1363
1364         //
1365         // If we have a target name then see if it needs updating ...
1366         //
1367
1368         if( pDirEntry->TargetNameLength > 0)
1369         {
1370
1371             //
1372             // Update the target name information if needed
1373             //
1374
1375             uniTargetName.Length = (USHORT)pDirEntry->TargetNameLength;
1376
1377             uniTargetName.MaximumLength = uniTargetName.Length;
1378
1379             uniTargetName.Buffer = (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset);
1380
1381             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
1382                             TRUE);
1383
1384             if( DirEntry->NameInformation.TargetName.Length == 0 ||
1385                 RtlCompareUnicodeString( &uniTargetName,
1386                                          &DirEntry->NameInformation.TargetName,
1387                                          TRUE) != 0)
1388             {
1389
1390                 //
1391                 // Update the target name
1392                 //
1393
1394                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
1395                                                 &DirEntry->Flags,
1396                                                 uniTargetName.Buffer,
1397                                                 uniTargetName.Length);
1398
1399                 if( !NT_SUCCESS( ntStatus))
1400                 {
1401
1402                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
1403
1404                     try_return( ntStatus);
1405                 }
1406             }
1407
1408             AFSReleaseResource( &DirEntry->NonPaged->Lock);
1409         }
1410
1411 try_exit:
1412
1413         if( pDirEntry != NULL)
1414         {
1415
1416             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
1417         }
1418     }
1419
1420     return ntStatus;
1421 }
1422
1423 NTSTATUS
1424 AFSValidateSymLink( IN GUID *AuthGroup,
1425                     IN AFSDirectoryCB *DirEntry)
1426 {
1427
1428     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1429     NTSTATUS ntStatus = STATUS_SUCCESS;
1430     AFSDirEnumEntry *pDirEntry = NULL;
1431     UNICODE_STRING uniTargetName;
1432
1433     __Enter
1434     {
1435
1436         ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
1437                                           AuthGroup,
1438                                           FALSE,
1439                                           &pDirEntry);
1440
1441         if( !NT_SUCCESS( ntStatus))
1442         {
1443
1444             try_return( ntStatus);
1445         }
1446
1447         if( pDirEntry->FileType == AFS_FILE_TYPE_UNKNOWN ||
1448             pDirEntry->FileType == AFS_FILE_TYPE_INVALID)
1449         {
1450
1451             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
1452         }
1453
1454         DirEntry->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
1455
1456         DirEntry->ObjectInformation->Expiration = pDirEntry->Expiration;
1457
1458         DirEntry->ObjectInformation->DataVersion = pDirEntry->DataVersion;
1459
1460         //
1461         // Update the target name information if needed
1462         //
1463
1464         uniTargetName.Length = (USHORT)pDirEntry->TargetNameLength;
1465
1466         uniTargetName.MaximumLength = uniTargetName.Length;
1467
1468         uniTargetName.Buffer = (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset);
1469
1470         if( uniTargetName.Length > 0)
1471         {
1472
1473             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
1474                             TRUE);
1475
1476             if( DirEntry->NameInformation.TargetName.Length == 0 ||
1477                 RtlCompareUnicodeString( &uniTargetName,
1478                                          &DirEntry->NameInformation.TargetName,
1479                                          TRUE) != 0)
1480             {
1481
1482                 //
1483                 // Update the target name
1484                 //
1485
1486                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
1487                                                 &DirEntry->Flags,
1488                                                 uniTargetName.Buffer,
1489                                                 uniTargetName.Length);
1490
1491                 if( !NT_SUCCESS( ntStatus))
1492                 {
1493
1494                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
1495
1496                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1497                 }
1498             }
1499
1500             AFSReleaseResource( &DirEntry->NonPaged->Lock);
1501         }
1502
1503         //
1504         // If the FileType is the same then nothing to do since it IS
1505         // a SymLink
1506         //
1507
1508         if( pDirEntry->FileType == DirEntry->ObjectInformation->FileType)
1509         {
1510
1511             ASSERT( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK);
1512
1513             try_return( ntStatus = STATUS_SUCCESS);
1514         }
1515
1516         DirEntry->ObjectInformation->FileType = pDirEntry->FileType;
1517
1518         DirEntry->ObjectInformation->CreationTime = pDirEntry->CreationTime;
1519
1520         DirEntry->ObjectInformation->LastAccessTime = pDirEntry->LastAccessTime;
1521
1522         DirEntry->ObjectInformation->LastWriteTime = pDirEntry->LastWriteTime;
1523
1524         DirEntry->ObjectInformation->ChangeTime = pDirEntry->ChangeTime;
1525
1526         DirEntry->ObjectInformation->EndOfFile = pDirEntry->EndOfFile;
1527
1528         DirEntry->ObjectInformation->AllocationSize = pDirEntry->AllocationSize;
1529
1530         DirEntry->ObjectInformation->FileAttributes = pDirEntry->FileAttributes;
1531
1532         if( pDirEntry->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1533         {
1534
1535             DirEntry->ObjectInformation->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1536         }
1537
1538         if( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK ||
1539             pDirEntry->FileType == AFS_FILE_TYPE_DFSLINK)
1540         {
1541
1542             DirEntry->ObjectInformation->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1543         }
1544
1545         DirEntry->ObjectInformation->EaSize = pDirEntry->EaSize;
1546
1547         DirEntry->ObjectInformation->Links = pDirEntry->Links;
1548
1549 try_exit:
1550
1551         if( pDirEntry != NULL)
1552         {
1553
1554             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
1555         }
1556     }
1557
1558     return ntStatus;
1559 }
1560
1561 NTSTATUS
1562 AFSInvalidateObject( IN OUT AFSObjectInfoCB **ppObjectInfo,
1563                      IN     ULONG Reason)
1564 {
1565
1566     NTSTATUS ntStatus = STATUS_SUCCESS;
1567     IO_STATUS_BLOCK stIoStatus;
1568     ULONG ulFilter = 0;
1569
1570     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1571                   AFS_TRACE_LEVEL_VERBOSE,
1572                   "AFSInvalidateObject Invalidation on node type %d for fid %08lX-%08lX-%08lX-%08lX Reason %d\n",
1573                   (*ppObjectInfo)->FileType,
1574                   (*ppObjectInfo)->FileId.Cell,
1575                   (*ppObjectInfo)->FileId.Volume,
1576                   (*ppObjectInfo)->FileId.Vnode,
1577                   (*ppObjectInfo)->FileId.Unique,
1578                   Reason);
1579
1580     if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_SYMLINK ||
1581         (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DFSLINK ||
1582         (*ppObjectInfo)->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1583     {
1584         //
1585         // We only act on the mount point itself, not the target. If the
1586         // node has been deleted then mark it as such otherwise indicate
1587         // it requires verification
1588         //
1589
1590         if( Reason == AFS_INVALIDATE_DELETED)
1591         {
1592             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
1593         }
1594         else
1595         {
1596
1597             if( Reason == AFS_INVALIDATE_FLUSHED)
1598             {
1599
1600                 (*ppObjectInfo)->DataVersion.QuadPart = (ULONGLONG)-1;
1601
1602                 SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
1603             }
1604
1605             (*ppObjectInfo)->Expiration.QuadPart = 0;
1606
1607             (*ppObjectInfo)->TargetFileId.Vnode = 0;
1608
1609             (*ppObjectInfo)->TargetFileId.Unique = 0;
1610
1611             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1612                           AFS_TRACE_LEVEL_VERBOSE,
1613                           "AFSInvalidateObject Setting VERIFY flag on fid %08lX-%08lX-%08lX-%08lX\n",
1614                           (*ppObjectInfo)->FileId.Cell,
1615                           (*ppObjectInfo)->FileId.Volume,
1616                           (*ppObjectInfo)->FileId.Vnode,
1617                           (*ppObjectInfo)->FileId.Unique);
1618
1619             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY);
1620         }
1621
1622         ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1623
1624         if( Reason == AFS_INVALIDATE_CREDS)
1625         {
1626             ulFilter |= FILE_NOTIFY_CHANGE_SECURITY;
1627         }
1628
1629         if( Reason == AFS_INVALIDATE_DATA_VERSION ||
1630             Reason == AFS_INVALIDATE_FLUSHED)
1631         {
1632             ulFilter |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE;
1633         }
1634         else
1635         {
1636             ulFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1637         }
1638
1639         AFSFsRtlNotifyFullReportChange( (*ppObjectInfo)->ParentObjectInformation,
1640                                         NULL,
1641                                         ulFilter,
1642                                         FILE_ACTION_MODIFIED);
1643
1644         try_return( ntStatus);
1645     }
1646
1647     //
1648     // Depending on the reason for invalidation then perform work on the node
1649     //
1650
1651     switch( Reason)
1652     {
1653
1654     case AFS_INVALIDATE_DELETED:
1655         {
1656
1657             //
1658             // Mark this node as invalid
1659             //
1660
1661             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_DELETED);
1662
1663             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1664                           AFS_TRACE_LEVEL_VERBOSE,
1665                           "AFSInvalidateObject Set DELETE flag on fid %08lX-%08lX-%08lX-%08lX\n",
1666                           (*ppObjectInfo)->FileId.Cell,
1667                           (*ppObjectInfo)->FileId.Volume,
1668                           (*ppObjectInfo)->FileId.Vnode,
1669                           (*ppObjectInfo)->FileId.Unique);
1670
1671             if( (*ppObjectInfo)->ParentObjectInformation != NULL)
1672             {
1673
1674                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1675                               AFS_TRACE_LEVEL_VERBOSE,
1676                               "AFSInvalidateObject Set VERIFY flag on parent fid %08lX-%08lX-%08lX-%08lX\n",
1677                               (*ppObjectInfo)->ParentObjectInformation->FileId.Cell,
1678                               (*ppObjectInfo)->ParentObjectInformation->FileId.Volume,
1679                               (*ppObjectInfo)->ParentObjectInformation->FileId.Vnode,
1680                               (*ppObjectInfo)->ParentObjectInformation->FileId.Unique);
1681
1682                 SetFlag( (*ppObjectInfo)->ParentObjectInformation->Flags, AFS_OBJECT_FLAGS_VERIFY);
1683
1684                 (*ppObjectInfo)->ParentObjectInformation->DataVersion.QuadPart = (ULONGLONG)-1;
1685
1686                 (*ppObjectInfo)->ParentObjectInformation->Expiration.QuadPart = 0;
1687             }
1688
1689             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1690             {
1691                 ulFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
1692             }
1693             else
1694             {
1695                 ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1696             }
1697
1698             AFSFsRtlNotifyFullReportChange( (*ppObjectInfo)->ParentObjectInformation,
1699                                             NULL,
1700                                             ulFilter,
1701                                             FILE_ACTION_REMOVED);
1702
1703             if( NT_SUCCESS( AFSQueueInvalidateObject( (*ppObjectInfo),
1704                                                       Reason)))
1705             {
1706                 (*ppObjectInfo) = NULL; // We'll dec the count in the worker item
1707             }
1708
1709             break;
1710         }
1711
1712     case AFS_INVALIDATE_FLUSHED:
1713         {
1714
1715             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE &&
1716                 (*ppObjectInfo)->Fcb != NULL)
1717             {
1718
1719                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1720                               AFS_TRACE_LEVEL_VERBOSE,
1721                               "AFSInvalidateObject Flush/purge file fid %08lX-%08lX-%08lX-%08lX\n",
1722                               (*ppObjectInfo)->FileId.Cell,
1723                               (*ppObjectInfo)->FileId.Volume,
1724                               (*ppObjectInfo)->FileId.Vnode,
1725                               (*ppObjectInfo)->FileId.Unique);
1726
1727                 AFSAcquireExcl( &(*ppObjectInfo)->Fcb->NPFcb->Resource,
1728                                 TRUE);
1729
1730                 __try
1731                 {
1732
1733                     CcFlushCache( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers,
1734                                   NULL,
1735                                   0,
1736                                   &stIoStatus);
1737
1738                     if( !NT_SUCCESS( stIoStatus.Status))
1739                     {
1740
1741                         AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
1742                                       AFS_TRACE_LEVEL_ERROR,
1743                                       "AFSInvalidateObject CcFlushCache failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
1744                                       (*ppObjectInfo)->FileId.Cell,
1745                                       (*ppObjectInfo)->FileId.Volume,
1746                                       (*ppObjectInfo)->FileId.Vnode,
1747                                       (*ppObjectInfo)->FileId.Unique,
1748                                       stIoStatus.Status,
1749                                       stIoStatus.Information);
1750
1751                         ntStatus = stIoStatus.Status;
1752                     }
1753
1754                     if ( !CcPurgeCacheSection( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers,
1755                                                NULL,
1756                                                0,
1757                                                FALSE))
1758                     {
1759
1760                         AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
1761                                       AFS_TRACE_LEVEL_WARNING,
1762                                       "AFSInvalidateObject CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
1763                                       (*ppObjectInfo)->FileId.Cell,
1764                                       (*ppObjectInfo)->FileId.Volume,
1765                                       (*ppObjectInfo)->FileId.Vnode,
1766                                       (*ppObjectInfo)->FileId.Unique);
1767
1768                         SetFlag( (*ppObjectInfo)->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
1769                     }
1770                 }
1771                 __except( EXCEPTION_EXECUTE_HANDLER)
1772                 {
1773
1774                     ntStatus = GetExceptionCode();
1775
1776                     AFSDbgLogMsg( 0,
1777                                   0,
1778                                   "EXCEPTION - AFSInvalidateObject Cc FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
1779                                   (*ppObjectInfo)->FileId.Cell,
1780                                   (*ppObjectInfo)->FileId.Volume,
1781                                   (*ppObjectInfo)->FileId.Vnode,
1782                                   (*ppObjectInfo)->FileId.Unique,
1783                                   ntStatus);
1784
1785                     SetFlag( (*ppObjectInfo)->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
1786                 }
1787
1788                 AFSReleaseResource( &(*ppObjectInfo)->Fcb->NPFcb->Resource);
1789
1790                 //
1791                 // Clear out the extents
1792                 // Get rid of them (note this involves waiting
1793                 // for any writes or reads to the cache to complete)
1794                 //
1795
1796                 AFSTearDownFcbExtents( (*ppObjectInfo)->Fcb,
1797                                        NULL);
1798             }
1799
1800             (*ppObjectInfo)->DataVersion.QuadPart = (ULONGLONG)-1;
1801
1802
1803             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE)
1804             {
1805
1806                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1807                               AFS_TRACE_LEVEL_VERBOSE,
1808                               "AFSInvalidateObject Setting VERIFY_DATA flag on fid %08lX-%08lX-%08lX-%08lX\n",
1809                               (*ppObjectInfo)->FileId.Cell,
1810                               (*ppObjectInfo)->FileId.Volume,
1811                               (*ppObjectInfo)->FileId.Vnode,
1812                               (*ppObjectInfo)->FileId.Unique);
1813
1814                 SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
1815             }
1816
1817             // Fall through to the default processing
1818         }
1819
1820     default:
1821         {
1822
1823             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1824             {
1825                 ulFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
1826             }
1827             else
1828             {
1829                 ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1830             }
1831
1832             if( Reason == AFS_INVALIDATE_CREDS)
1833             {
1834                 ulFilter |= FILE_NOTIFY_CHANGE_SECURITY;
1835             }
1836
1837             if( Reason == AFS_INVALIDATE_DATA_VERSION)
1838             {
1839                 ulFilter |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE;
1840             }
1841             else
1842             {
1843                 ulFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1844             }
1845
1846             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1847             {
1848
1849                 AFSFsRtlNotifyFullReportChange( (*ppObjectInfo),
1850                                                 NULL,
1851                                                 ulFilter,
1852                                                 FILE_ACTION_MODIFIED);
1853             }
1854             else
1855             {
1856
1857                 AFSFsRtlNotifyFullReportChange( (*ppObjectInfo)->ParentObjectInformation,
1858                                                 NULL,
1859                                                 ulFilter,
1860                                                 FILE_ACTION_MODIFIED);
1861             }
1862
1863             //
1864             // Indicate this node requires re-evaluation for the remaining reasons
1865             //
1866
1867             (*ppObjectInfo)->Expiration.QuadPart = 0;
1868
1869             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1870                           AFS_TRACE_LEVEL_VERBOSE,
1871                           "AFSInvalidateObject Setting VERIFY flag on fid %08lX-%08lX-%08lX-%08lX\n",
1872                           (*ppObjectInfo)->FileId.Cell,
1873                           (*ppObjectInfo)->FileId.Volume,
1874                           (*ppObjectInfo)->FileId.Vnode,
1875                           (*ppObjectInfo)->FileId.Unique);
1876
1877             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY);
1878
1879             if( Reason == AFS_INVALIDATE_DATA_VERSION ||
1880                 (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE &&
1881                 ( Reason == AFS_INVALIDATE_CALLBACK ||
1882                   Reason == AFS_INVALIDATE_EXPIRED))
1883             {
1884                 if ( NT_SUCCESS( AFSQueueInvalidateObject( (*ppObjectInfo),
1885                                                            AFS_INVALIDATE_DATA_VERSION)))
1886                 {
1887
1888                     (*ppObjectInfo) = NULL; // We'll dec the count in the worker item
1889                 }
1890             }
1891
1892             break;
1893         }
1894     }
1895
1896   try_exit:
1897
1898     return ntStatus;
1899 }
1900
1901 NTSTATUS
1902 AFSInvalidateCache( IN AFSInvalidateCacheCB *InvalidateCB)
1903 {
1904
1905     NTSTATUS ntStatus = STATUS_SUCCESS;
1906     AFSFcb      *pDcb = NULL, *pFcb = NULL, *pNextFcb = NULL;
1907     AFSVolumeCB *pVolumeCB = NULL;
1908     AFSFcb      *pTargetDcb = NULL;
1909     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
1910     AFSDirectoryCB *pCurrentDirEntry = NULL;
1911     BOOLEAN     bIsChild = FALSE;
1912     ULONGLONG   ullIndex = 0;
1913     AFSObjectInfoCB *pObjectInfo = NULL;
1914     LONG lCount;
1915
1916     __Enter
1917     {
1918
1919         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1920                       AFS_TRACE_LEVEL_VERBOSE,
1921                       "AFSInvalidateCache Invalidation FID %08lX-%08lX-%08lX-%08lX Type %d WholeVolume %d Reason %d\n",
1922                       InvalidateCB->FileID.Cell,
1923                       InvalidateCB->FileID.Volume,
1924                       InvalidateCB->FileID.Vnode,
1925                       InvalidateCB->FileID.Unique,
1926                       InvalidateCB->FileType,
1927                       InvalidateCB->WholeVolume,
1928                       InvalidateCB->Reason);
1929
1930         //
1931         // Need to locate the Fcb for the directory to purge
1932         //
1933
1934         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1935                       AFS_TRACE_LEVEL_VERBOSE,
1936                       "AFSInvalidateCache Acquiring RDR VolumeTreeLock lock %08lX SHARED %08lX\n",
1937                       &pDevExt->Specific.RDR.VolumeTreeLock,
1938                       PsGetCurrentThread());
1939
1940         //
1941         // Starve any exclusive waiters on this paticular call
1942         //
1943
1944         AFSAcquireSharedStarveExclusive( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
1945
1946         //
1947         // Locate the volume node
1948         //
1949
1950         ullIndex = AFSCreateHighIndex( &InvalidateCB->FileID);
1951
1952         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
1953                                        ullIndex,
1954                                        (AFSBTreeEntry **)&pVolumeCB);
1955
1956         if( pVolumeCB != NULL)
1957         {
1958
1959             lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
1960
1961             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
1962                           AFS_TRACE_LEVEL_VERBOSE,
1963                           "AFSInvalidateCache Increment count on volume %08lX Cnt %d\n",
1964                           pVolumeCB,
1965                           lCount);
1966         }
1967
1968         AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
1969
1970         if( !NT_SUCCESS( ntStatus) ||
1971             pVolumeCB == NULL)
1972         {
1973
1974             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1975                           AFS_TRACE_LEVEL_WARNING,
1976                           "AFSInvalidateCache Invalidation FAILURE Unable to locate volume node FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
1977                           InvalidateCB->FileID.Cell,
1978                           InvalidateCB->FileID.Volume,
1979                           InvalidateCB->FileID.Vnode,
1980                           InvalidateCB->FileID.Unique,
1981                           ntStatus);
1982
1983             try_return( ntStatus = STATUS_SUCCESS);
1984         }
1985
1986         //
1987         // If this is a whole volume invalidation then go do it now
1988         //
1989
1990         if( InvalidateCB->WholeVolume)
1991         {
1992
1993             ntStatus = AFSInvalidateVolume( pVolumeCB,
1994                                             InvalidateCB->Reason);
1995
1996             lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
1997
1998             try_return( ntStatus);
1999         }
2000
2001         AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
2002                           TRUE);
2003
2004         if ( AFSIsVolumeFID( &InvalidateCB->FileID))
2005         {
2006
2007             pObjectInfo = &pVolumeCB->ObjectInformation;
2008         }
2009         else
2010         {
2011
2012             lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
2013
2014             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2015                           AFS_TRACE_LEVEL_VERBOSE,
2016                           "AFSInvalidateCache Decrement count on volume %08lX Cnt %d\n",
2017                           pVolumeCB,
2018                           pVolumeCB->VolumeReferenceCount);
2019
2020             ullIndex = AFSCreateLowIndex( &InvalidateCB->FileID);
2021
2022             ntStatus = AFSLocateHashEntry( pVolumeCB->ObjectInfoTree.TreeHead,
2023                                            ullIndex,
2024                                            (AFSBTreeEntry **)&pObjectInfo);
2025         }
2026
2027         if( pObjectInfo != NULL)
2028         {
2029
2030             //
2031             // Reference the node so it won't be torn down
2032             //
2033
2034             lCount = InterlockedIncrement( &pObjectInfo->ObjectReferenceCount);
2035
2036             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2037                           AFS_TRACE_LEVEL_VERBOSE,
2038                           "AFSInvalidateCache Increment count on object %08lX Cnt %d\n",
2039                           pObjectInfo,
2040                           lCount);
2041         }
2042
2043         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
2044
2045         if( !NT_SUCCESS( ntStatus) ||
2046             pObjectInfo == NULL)
2047         {
2048
2049             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2050                           AFS_TRACE_LEVEL_VERBOSE,
2051                           "AFSInvalidateCache Invalidation FAILURE Unable to locate object FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2052                           InvalidateCB->FileID.Cell,
2053                           InvalidateCB->FileID.Volume,
2054                           InvalidateCB->FileID.Vnode,
2055                           InvalidateCB->FileID.Unique,
2056                           ntStatus);
2057
2058             try_return( ntStatus = STATUS_SUCCESS);
2059         }
2060
2061         AFSInvalidateObject( &pObjectInfo,
2062                              InvalidateCB->Reason);
2063
2064 try_exit:
2065
2066         if( pObjectInfo != NULL)
2067         {
2068
2069             lCount = InterlockedDecrement( &pObjectInfo->ObjectReferenceCount);
2070
2071             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2072                           AFS_TRACE_LEVEL_VERBOSE,
2073                           "AFSInvalidateCache Decrement count on object %08lX Cnt %d\n",
2074                           pObjectInfo,
2075                           lCount);
2076         }
2077     }
2078
2079     return ntStatus;
2080 }
2081
2082 BOOLEAN
2083 AFSIsChildOfParent( IN AFSFcb *Dcb,
2084                     IN AFSFcb *Fcb)
2085 {
2086
2087     BOOLEAN bIsChild = FALSE;
2088     AFSFcb *pCurrentFcb = Fcb;
2089
2090     while( pCurrentFcb != NULL)
2091     {
2092
2093         if( pCurrentFcb->ObjectInformation->ParentObjectInformation == Dcb->ObjectInformation)
2094         {
2095
2096             bIsChild = TRUE;
2097
2098             break;
2099         }
2100
2101         pCurrentFcb = pCurrentFcb->ObjectInformation->ParentObjectInformation->Fcb;
2102     }
2103
2104     return bIsChild;
2105 }
2106
2107 inline
2108 ULONGLONG
2109 AFSCreateHighIndex( IN AFSFileID *FileID)
2110 {
2111
2112     ULONGLONG ullIndex = 0;
2113
2114     ullIndex = (((ULONGLONG)FileID->Cell << 32) | FileID->Volume);
2115
2116     return ullIndex;
2117 }
2118
2119 inline
2120 ULONGLONG
2121 AFSCreateLowIndex( IN AFSFileID *FileID)
2122 {
2123
2124     ULONGLONG ullIndex = 0;
2125
2126     ullIndex = (((ULONGLONG)FileID->Vnode << 32) | FileID->Unique);
2127
2128     return ullIndex;
2129 }
2130
2131 BOOLEAN
2132 AFSCheckAccess( IN ACCESS_MASK DesiredAccess,
2133                 IN ACCESS_MASK GrantedAccess,
2134                 IN BOOLEAN DirectoryEntry)
2135 {
2136
2137     BOOLEAN bAccessGranted = TRUE;
2138
2139     //
2140     // Check if we are asking for read/write and granted only read only
2141     // NOTE: There will be more checks here
2142     //
2143
2144     if( !AFSCheckForReadOnlyAccess( DesiredAccess,
2145                                     DirectoryEntry) &&
2146         AFSCheckForReadOnlyAccess( GrantedAccess,
2147                                    DirectoryEntry))
2148     {
2149
2150         bAccessGranted = FALSE;
2151     }
2152
2153     return bAccessGranted;
2154 }
2155
2156 NTSTATUS
2157 AFSGetDriverStatus( IN AFSDriverStatusRespCB *DriverStatus)
2158 {
2159
2160     NTSTATUS         ntStatus = STATUS_SUCCESS;
2161     AFSDeviceExt    *pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
2162
2163     //
2164     // Start with read
2165     //
2166
2167     DriverStatus->Status = AFS_DRIVER_STATUS_READY;
2168
2169     if( AFSGlobalRoot == NULL)
2170     {
2171
2172         //
2173         // We are not ready
2174         //
2175
2176         DriverStatus->Status = AFS_DRIVER_STATUS_NOT_READY;
2177     }
2178
2179     if( pControlDevExt->Specific.Control.CommServiceCB.IrpPoolControlFlag != POOL_ACTIVE)
2180     {
2181
2182         //
2183         // No service yet
2184         //
2185
2186         DriverStatus->Status = AFS_DRIVER_STATUS_NO_SERVICE;
2187     }
2188
2189     return ntStatus;
2190 }
2191
2192 NTSTATUS
2193 AFSSubstituteSysName( IN UNICODE_STRING *ComponentName,
2194                       IN UNICODE_STRING *SubstituteName,
2195                       IN ULONG StringIndex)
2196 {
2197
2198     NTSTATUS ntStatus = STATUS_SUCCESS;
2199     AFSDeviceExt    *pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
2200     AFSSysNameCB    *pSysName = NULL;
2201     ERESOURCE       *pSysNameLock = NULL;
2202     ULONG            ulIndex = 1;
2203     USHORT           usIndex = 0;
2204     UNICODE_STRING   uniSysName;
2205
2206     __Enter
2207     {
2208
2209 #if defined(_WIN64)
2210
2211         if( IoIs32bitProcess( NULL))
2212         {
2213
2214             pSysNameLock = &pControlDevExt->Specific.Control.SysName32ListLock;
2215
2216             pSysName = pControlDevExt->Specific.Control.SysName32ListHead;
2217         }
2218         else
2219         {
2220
2221             pSysNameLock = &pControlDevExt->Specific.Control.SysName64ListLock;
2222
2223             pSysName = pControlDevExt->Specific.Control.SysName64ListHead;
2224         }
2225 #else
2226
2227         pSysNameLock = &pControlDevExt->Specific.Control.SysName32ListLock;
2228
2229         pSysName = pControlDevExt->Specific.Control.SysName32ListHead;
2230
2231 #endif
2232
2233         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2234                       AFS_TRACE_LEVEL_VERBOSE,
2235                       "AFSSubstituteSysName Acquiring SysName lock %08lX SHARED %08lX\n",
2236                       pSysNameLock,
2237                       PsGetCurrentThread());
2238
2239         AFSAcquireShared( pSysNameLock,
2240                           TRUE);
2241
2242         //
2243         // Find where we are in the list
2244         //
2245
2246         while( pSysName != NULL &&
2247             ulIndex < StringIndex)
2248         {
2249
2250             pSysName = pSysName->fLink;
2251
2252             ulIndex++;
2253         }
2254
2255         if( pSysName == NULL)
2256         {
2257
2258             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
2259         }
2260
2261         RtlInitUnicodeString( &uniSysName,
2262                               L"@SYS");
2263         //
2264         // If it is a full component of @SYS then just substitue the
2265         // name in
2266         //
2267
2268         if( RtlCompareUnicodeString( &uniSysName,
2269                                      ComponentName,
2270                                      TRUE) == 0)
2271         {
2272
2273             SubstituteName->Length = pSysName->SysName.Length;
2274             SubstituteName->MaximumLength = SubstituteName->Length;
2275
2276             SubstituteName->Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2277                                                                         SubstituteName->Length,
2278                                                                         AFS_SUBST_BUFFER_TAG);
2279
2280             if( SubstituteName->Buffer == NULL)
2281             {
2282
2283                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2284             }
2285
2286             RtlCopyMemory( SubstituteName->Buffer,
2287                            pSysName->SysName.Buffer,
2288                            pSysName->SysName.Length);
2289         }
2290         else
2291         {
2292
2293             usIndex = 0;
2294
2295             while( ComponentName->Buffer[ usIndex] != L'@')
2296             {
2297
2298                 usIndex++;
2299             }
2300
2301             SubstituteName->Length = (usIndex * sizeof( WCHAR)) + pSysName->SysName.Length;
2302             SubstituteName->MaximumLength = SubstituteName->Length;
2303
2304             SubstituteName->Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2305                                                                         SubstituteName->Length,
2306                                                                         AFS_SUBST_BUFFER_TAG);
2307
2308             if( SubstituteName->Buffer == NULL)
2309             {
2310
2311                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2312             }
2313
2314             RtlCopyMemory( SubstituteName->Buffer,
2315                            ComponentName->Buffer,
2316                            usIndex * sizeof( WCHAR));
2317
2318             RtlCopyMemory( &SubstituteName->Buffer[ usIndex],
2319                            pSysName->SysName.Buffer,
2320                            pSysName->SysName.Length);
2321         }
2322
2323 try_exit:
2324
2325         AFSReleaseResource( pSysNameLock);
2326     }
2327
2328     return ntStatus;
2329 }
2330
2331 NTSTATUS
2332 AFSSubstituteNameInPath( IN OUT UNICODE_STRING *FullPathName,
2333                          IN OUT UNICODE_STRING *ComponentName,
2334                          IN UNICODE_STRING *SubstituteName,
2335                          IN OUT UNICODE_STRING *RemainingPath,
2336                          IN BOOLEAN FreePathName)
2337 {
2338
2339     NTSTATUS ntStatus = STATUS_SUCCESS;
2340     UNICODE_STRING uniPathName;
2341     USHORT usPrefixNameLen = 0;
2342     SHORT  sNameLenDelta = 0;
2343
2344     __Enter
2345     {
2346
2347         //
2348         // If the passed in name can handle the additional length
2349         // then just moves things around
2350         //
2351
2352         sNameLenDelta = SubstituteName->Length - ComponentName->Length;
2353
2354         usPrefixNameLen = (USHORT)(ComponentName->Buffer - FullPathName->Buffer);
2355
2356         if( FullPathName->MaximumLength > FullPathName->Length + sNameLenDelta)
2357         {
2358
2359             if( FullPathName->Length > usPrefixNameLen + ComponentName->Length)
2360             {
2361
2362                 RtlMoveMemory( &FullPathName->Buffer[ ((usPrefixNameLen*sizeof( WCHAR) + SubstituteName->Length)/sizeof( WCHAR))],
2363                                &FullPathName->Buffer[ ((usPrefixNameLen*sizeof( WCHAR) + ComponentName->Length)/sizeof( WCHAR))],
2364                                FullPathName->Length - usPrefixNameLen*sizeof( WCHAR) - ComponentName->Length);
2365             }
2366
2367             RtlCopyMemory( &FullPathName->Buffer[ usPrefixNameLen],
2368                            SubstituteName->Buffer,
2369                            SubstituteName->Length);
2370
2371             FullPathName->Length += sNameLenDelta;
2372
2373             ComponentName->Length += sNameLenDelta;
2374
2375             ComponentName->MaximumLength = ComponentName->Length;
2376
2377             if ( RemainingPath->Buffer)
2378             {
2379
2380                 RemainingPath->Buffer += sNameLenDelta/sizeof( WCHAR);
2381             }
2382
2383             try_return( ntStatus);
2384         }
2385
2386         //
2387         // Need to re-allocate the buffer
2388         //
2389
2390         uniPathName.Length = FullPathName->Length -
2391                                          ComponentName->Length +
2392                                          SubstituteName->Length;
2393
2394         uniPathName.MaximumLength = FullPathName->MaximumLength + PAGE_SIZE;
2395
2396         uniPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2397                                                                 uniPathName.MaximumLength,
2398                                                                 AFS_NAME_BUFFER_FOUR_TAG);
2399
2400         if( uniPathName.Buffer == NULL)
2401         {
2402
2403             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2404         }
2405
2406         usPrefixNameLen = (USHORT)(ComponentName->Buffer - FullPathName->Buffer);
2407
2408         usPrefixNameLen *= sizeof( WCHAR);
2409
2410         RtlZeroMemory( uniPathName.Buffer,
2411                        uniPathName.MaximumLength);
2412
2413         RtlCopyMemory( uniPathName.Buffer,
2414                        FullPathName->Buffer,
2415                        usPrefixNameLen);
2416
2417         RtlCopyMemory( &uniPathName.Buffer[ (usPrefixNameLen/sizeof( WCHAR))],
2418                        SubstituteName->Buffer,
2419                        SubstituteName->Length);
2420
2421         if( FullPathName->Length > usPrefixNameLen + ComponentName->Length)
2422         {
2423
2424             RtlCopyMemory( &uniPathName.Buffer[ (usPrefixNameLen + SubstituteName->Length)/sizeof( WCHAR)],
2425                            &FullPathName->Buffer[ (usPrefixNameLen + ComponentName->Length)/sizeof( WCHAR)],
2426                            FullPathName->Length - usPrefixNameLen - ComponentName->Length);
2427         }
2428
2429         ComponentName->Buffer = uniPathName.Buffer + (ComponentName->Buffer - FullPathName->Buffer);
2430
2431         ComponentName->Length += sNameLenDelta;
2432
2433         ComponentName->MaximumLength = ComponentName->Length;
2434
2435         if ( RemainingPath->Buffer)
2436         {
2437
2438             RemainingPath->Buffer = uniPathName.Buffer
2439                 + (RemainingPath->Buffer - FullPathName->Buffer)
2440                 + sNameLenDelta/sizeof( WCHAR);
2441         }
2442
2443         if( FreePathName)
2444         {
2445             AFSExFreePoolWithTag( FullPathName->Buffer, 0);
2446         }
2447
2448         *FullPathName = uniPathName;
2449
2450 try_exit:
2451
2452         NOTHING;
2453     }
2454
2455     return ntStatus;
2456 }
2457
2458 NTSTATUS
2459 AFSInvalidateVolume( IN AFSVolumeCB *VolumeCB,
2460                      IN ULONG Reason)
2461 {
2462
2463     NTSTATUS ntStatus = STATUS_SUCCESS;
2464     AFSObjectInfoCB *pCurrentObject = NULL;
2465     AFSObjectInfoCB *pNextObject = NULL;
2466     LONG lCount;
2467     AFSFcb *pFcb = NULL;
2468     ULONG ulFilter = 0;
2469
2470     __Enter
2471     {
2472
2473         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2474                       AFS_TRACE_LEVEL_VERBOSE,
2475                       "AFSInvalidateVolume Invalidate volume fid %08lX-%08lX-%08lX-%08lX Reason %08lX\n",
2476                       VolumeCB->ObjectInformation.FileId.Cell,
2477                       VolumeCB->ObjectInformation.FileId.Volume,
2478                       VolumeCB->ObjectInformation.FileId.Vnode,
2479                       VolumeCB->ObjectInformation.FileId.Unique,
2480                       Reason);
2481
2482         //
2483         // Depending on the reason for invalidation then perform work on the node
2484         //
2485
2486         switch( Reason)
2487         {
2488
2489             case AFS_INVALIDATE_DELETED:
2490             {
2491
2492                 //
2493                 // Mark this volume as invalid
2494                 //
2495
2496                 SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
2497
2498                 SetFlag( VolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE);
2499
2500                 break;
2501             }
2502         }
2503
2504         //
2505         // Invalidate the volume root directory
2506         //
2507
2508         pCurrentObject = &VolumeCB->ObjectInformation;
2509
2510         if ( pCurrentObject )
2511         {
2512
2513             lCount = InterlockedIncrement( &pCurrentObject->ObjectReferenceCount);
2514
2515             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2516                           AFS_TRACE_LEVEL_VERBOSE,
2517                           "AFSInvalidateVolumeObjects Increment count on object %08lX Cnt %d\n",
2518                           pCurrentObject,
2519                           lCount);
2520
2521             AFSInvalidateObject( &pCurrentObject,
2522                                  Reason);
2523
2524             if ( pCurrentObject)
2525             {
2526
2527                 lCount = InterlockedDecrement( &pCurrentObject->ObjectReferenceCount);
2528
2529                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2530                               AFS_TRACE_LEVEL_VERBOSE,
2531                               "AFSInvalidateVolumeObjects Decrement count on object %08lX Cnt %d\n",
2532                               pCurrentObject,
2533                               lCount);
2534             }
2535         }
2536
2537         //
2538         // Apply invalidation to all other volume objects
2539         //
2540
2541         AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2542                           TRUE);
2543
2544         pCurrentObject = VolumeCB->ObjectInfoListHead;
2545
2546         if ( pCurrentObject)
2547         {
2548
2549             //
2550             // Reference the node so it won't be torn down
2551             //
2552
2553             lCount = InterlockedIncrement( &pCurrentObject->ObjectReferenceCount);
2554
2555             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2556                           AFS_TRACE_LEVEL_VERBOSE,
2557                           "AFSInvalidateVolumeObjects Increment count on object %08lX Cnt %d\n",
2558                           pCurrentObject,
2559                           lCount);
2560         }
2561
2562         while( pCurrentObject != NULL)
2563         {
2564
2565             pNextObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
2566
2567             if ( pNextObject)
2568             {
2569
2570                 //
2571                 // Reference the node so it won't be torn down
2572                 //
2573
2574                 lCount = InterlockedIncrement( &pNextObject->ObjectReferenceCount);
2575
2576                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2577                               AFS_TRACE_LEVEL_VERBOSE,
2578                               "AFSInvalidateVolumeObjects Increment count on object %08lX Cnt %d\n",
2579                               pNextObject,
2580                               lCount);
2581             }
2582
2583             AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2584
2585             AFSInvalidateObject( &pCurrentObject,
2586                                  Reason);
2587
2588             if ( pCurrentObject )
2589             {
2590
2591                 lCount = InterlockedDecrement( &pCurrentObject->ObjectReferenceCount);
2592
2593                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2594                               AFS_TRACE_LEVEL_VERBOSE,
2595                               "AFSInvalidateVolumeObjects Decrement count on object %08lX Cnt %d\n",
2596                               pCurrentObject,
2597                               lCount);
2598             }
2599
2600             AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2601                               TRUE);
2602
2603             pCurrentObject = pNextObject;
2604         }
2605
2606         AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2607     }
2608
2609     return ntStatus;
2610 }
2611
2612 VOID
2613 AFSInvalidateAllVolumes( VOID)
2614 {
2615     AFSVolumeCB *pVolumeCB = NULL;
2616     AFSVolumeCB *pNextVolumeCB = NULL;
2617     AFSDeviceExt *pRDRDeviceExt = NULL;
2618     LONG lCount;
2619
2620     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2621
2622     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2623                   AFS_TRACE_LEVEL_VERBOSE,
2624                   "AFSInvalidateAllVolumes Acquiring RDR VolumeListLock lock %08lX SHARED %08lX\n",
2625                   &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2626                   PsGetCurrentThread());
2627
2628     AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2629                       TRUE);
2630
2631     pVolumeCB = pRDRDeviceExt->Specific.RDR.VolumeListHead;
2632
2633     if ( pVolumeCB)
2634     {
2635
2636         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2637                       AFS_TRACE_LEVEL_VERBOSE,
2638                       "AFSInvalidateAllVolumes Acquiring VolumeRoot ObjectInfoTree lock %08lX SHARED %08lX\n",
2639                       pVolumeCB->ObjectInfoTree.TreeLock,
2640                       PsGetCurrentThread());
2641
2642         lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
2643     }
2644
2645     while( pVolumeCB != NULL)
2646     {
2647
2648         pNextVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
2649
2650         if ( pNextVolumeCB)
2651         {
2652
2653             lCount = InterlockedIncrement( &pNextVolumeCB->VolumeReferenceCount);
2654         }
2655
2656         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
2657
2658         // do I need to hold the volume lock here?
2659
2660         AFSInvalidateVolume( pVolumeCB, AFS_INVALIDATE_EXPIRED);
2661
2662         AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2663                           TRUE);
2664
2665         lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
2666
2667         pVolumeCB = pNextVolumeCB;
2668     }
2669
2670     AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
2671 }
2672
2673 NTSTATUS
2674 AFSVerifyEntry( IN GUID *AuthGroup,
2675                 IN AFSDirectoryCB *DirEntry)
2676 {
2677
2678     NTSTATUS ntStatus = STATUS_SUCCESS;
2679     AFSDirEnumEntry *pDirEnumEntry = NULL;
2680     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
2681     IO_STATUS_BLOCK stIoStatus;
2682
2683     __Enter
2684     {
2685
2686         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2687                       AFS_TRACE_LEVEL_VERBOSE_2,
2688                       "AFSVerifyEntry Verifying entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2689                       &DirEntry->NameInformation.FileName,
2690                       pObjectInfo->FileId.Cell,
2691                       pObjectInfo->FileId.Volume,
2692                       pObjectInfo->FileId.Vnode,
2693                       pObjectInfo->FileId.Unique);
2694
2695         ntStatus = AFSEvaluateTargetByID( pObjectInfo,
2696                                           AuthGroup,
2697                                           FALSE,
2698                                           &pDirEnumEntry);
2699
2700         if( !NT_SUCCESS( ntStatus))
2701         {
2702
2703             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2704                           AFS_TRACE_LEVEL_ERROR,
2705                           "AFSVerifyEntry Evaluate Target failed %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
2706                           &DirEntry->NameInformation.FileName,
2707                           pObjectInfo->FileId.Cell,
2708                           pObjectInfo->FileId.Volume,
2709                           pObjectInfo->FileId.Vnode,
2710                           pObjectInfo->FileId.Unique,
2711                           ntStatus);
2712
2713             try_return( ntStatus);
2714         }
2715
2716         //
2717         // Check the data version of the file
2718         //
2719
2720         if( pObjectInfo->DataVersion.QuadPart == pDirEnumEntry->DataVersion.QuadPart)
2721         {
2722             if ( !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
2723             {
2724
2725                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2726                               AFS_TRACE_LEVEL_VERBOSE,
2727                               "AFSVerifyEntry No DV change %I64X for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2728                               pObjectInfo->DataVersion.QuadPart,
2729                               &DirEntry->NameInformation.FileName,
2730                               pObjectInfo->FileId.Cell,
2731                               pObjectInfo->FileId.Volume,
2732                               pObjectInfo->FileId.Vnode,
2733                               pObjectInfo->FileId.Unique);
2734
2735                 //
2736                 // We are ok, just get out
2737                 //
2738
2739                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2740
2741                 try_return( ntStatus = STATUS_SUCCESS);
2742             }
2743         }
2744
2745         //
2746         // New data version so we will need to process the node based on the type
2747         //
2748
2749         switch( pDirEnumEntry->FileType)
2750         {
2751
2752             case AFS_FILE_TYPE_MOUNTPOINT:
2753             {
2754
2755                 //
2756                 // For a mount point we need to ensure the target is the same
2757                 //
2758
2759                 if( !AFSIsEqualFID( &pObjectInfo->TargetFileId,
2760                                     &pDirEnumEntry->TargetFileId))
2761                 {
2762
2763                 }
2764
2765                 //
2766                 // Update the metadata for the entry
2767                 //
2768
2769                 ntStatus = AFSUpdateMetaData( DirEntry,
2770                                               pDirEnumEntry);
2771
2772                 if( NT_SUCCESS( ntStatus))
2773                 {
2774
2775                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2776                 }
2777
2778                 break;
2779             }
2780
2781             case AFS_FILE_TYPE_SYMLINK:
2782             {
2783
2784                 ASSERT( pDirEnumEntry->TargetNameLength > 0);
2785
2786                 //
2787                 // Update the metadata for the entry
2788                 //
2789
2790                 ntStatus = AFSUpdateMetaData( DirEntry,
2791                                               pDirEnumEntry);
2792
2793                 if( NT_SUCCESS( ntStatus))
2794                 {
2795
2796                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2797                 }
2798
2799                 break;
2800             }
2801
2802             case AFS_FILE_TYPE_FILE:
2803             {
2804                 FILE_OBJECT * pCCFileObject = NULL;
2805                 BOOLEAN bPurgeExtents = FALSE;
2806
2807                 if ( pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart)
2808                 {
2809
2810                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2811                                   AFS_TRACE_LEVEL_VERBOSE,
2812                                   "AFSVerifyEntry DV Change %wZ FID %08lX-%08lX-%08lX-%08lX (%08lX != %08lX)\n",
2813                                   &DirEntry->NameInformation.FileName,
2814                                   pObjectInfo->FileId.Cell,
2815                                   pObjectInfo->FileId.Volume,
2816                                   pObjectInfo->FileId.Vnode,
2817                                   pObjectInfo->FileId.Unique,
2818                                   pObjectInfo->DataVersion.LowPart,
2819                                   pDirEnumEntry->DataVersion.LowPart
2820                                   );
2821
2822                     bPurgeExtents = TRUE;
2823                 }
2824
2825                 if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
2826                 {
2827
2828                     bPurgeExtents = TRUE;
2829
2830                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2831                                   AFS_TRACE_LEVEL_VERBOSE,
2832                                   "AFSVerifyEntry Clearing VERIFY_DATA flag %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2833                                   &DirEntry->NameInformation.FileName,
2834                                   pObjectInfo->FileId.Cell,
2835                                   pObjectInfo->FileId.Volume,
2836                                   pObjectInfo->FileId.Vnode,
2837                                   pObjectInfo->FileId.Unique);
2838
2839                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
2840                 }
2841
2842                 if( pObjectInfo->Fcb != NULL)
2843                 {
2844
2845                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2846                                   AFS_TRACE_LEVEL_VERBOSE,
2847                                   "AFSVerifyEntry Flush/purge entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2848                                   &DirEntry->NameInformation.FileName,
2849                                   pObjectInfo->FileId.Cell,
2850                                   pObjectInfo->FileId.Volume,
2851                                   pObjectInfo->FileId.Vnode,
2852                                   pObjectInfo->FileId.Unique);
2853
2854                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Resource,
2855                                     TRUE);
2856
2857                     __try
2858                     {
2859
2860                         CcFlushCache( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
2861                                       NULL,
2862                                       0,
2863                                       &stIoStatus);
2864
2865                         if( !NT_SUCCESS( stIoStatus.Status))
2866                         {
2867
2868                             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2869                                           AFS_TRACE_LEVEL_ERROR,
2870                                           "AFSVerifyEntry CcFlushCache failure %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
2871                                           &DirEntry->NameInformation.FileName,
2872                                           pObjectInfo->FileId.Cell,
2873                                           pObjectInfo->FileId.Volume,
2874                                           pObjectInfo->FileId.Vnode,
2875                                           pObjectInfo->FileId.Unique,
2876                                           stIoStatus.Status,
2877                                           stIoStatus.Information);
2878
2879                             ntStatus = stIoStatus.Status;
2880                         }
2881
2882                         if ( bPurgeExtents)
2883                         {
2884
2885                             if ( !CcPurgeCacheSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
2886                                                        NULL,
2887                                                        0,
2888                                                        FALSE))
2889                             {
2890
2891                                 AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2892                                               AFS_TRACE_LEVEL_WARNING,
2893                                               "AFSVerifyEntry CcPurgeCacheSection failure %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2894                                               &DirEntry->NameInformation.FileName,
2895                                               pObjectInfo->FileId.Cell,
2896                                               pObjectInfo->FileId.Volume,
2897                                               pObjectInfo->FileId.Vnode,
2898                                               pObjectInfo->FileId.Unique);
2899
2900                                 SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
2901                             }
2902                         }
2903                     }
2904                     __except( EXCEPTION_EXECUTE_HANDLER)
2905                     {
2906                         ntStatus = GetExceptionCode();
2907
2908                         AFSDbgLogMsg( 0,
2909                                       0,
2910                                       "EXCEPTION - AFSVerifyEntry CcFlushCache or CcPurgeCacheSection %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
2911                                       &DirEntry->NameInformation.FileName,
2912                                       pObjectInfo->FileId.Cell,
2913                                       pObjectInfo->FileId.Volume,
2914                                       pObjectInfo->FileId.Vnode,
2915                                       pObjectInfo->FileId.Unique,
2916                                       ntStatus);
2917
2918                         SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
2919                     }
2920
2921                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Resource);
2922
2923                     if ( bPurgeExtents)
2924                     {
2925                         AFSFlushExtents( pObjectInfo->Fcb,
2926                                          AuthGroup);
2927                     }
2928
2929                     //
2930                     // Reacquire the Fcb to purge the cache
2931                     //
2932
2933                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2934                                   AFS_TRACE_LEVEL_VERBOSE,
2935                                   "AFSVerifyEntry Acquiring Fcb lock %08lX EXCL %08lX\n",
2936                                   &pObjectInfo->Fcb->NPFcb->Resource,
2937                                   PsGetCurrentThread());
2938
2939                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Resource,
2940                                     TRUE);
2941
2942                     //
2943                     // Update the metadata for the entry
2944                     //
2945
2946                     ntStatus = AFSUpdateMetaData( DirEntry,
2947                                                   pDirEnumEntry);
2948
2949                     if( !NT_SUCCESS( ntStatus))
2950                     {
2951
2952                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2953                                       AFS_TRACE_LEVEL_ERROR,
2954                                       "AFSVerifyEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX ntStatus %08lX\n",
2955                                       &DirEntry->NameInformation.FileName,
2956                                       pObjectInfo->FileId.Cell,
2957                                       pObjectInfo->FileId.Volume,
2958                                       pObjectInfo->FileId.Vnode,
2959                                       pObjectInfo->FileId.Unique,
2960                                       ntStatus);
2961
2962                         break;
2963                     }
2964
2965                     //
2966                     // Update file sizes
2967                     //
2968
2969                     pObjectInfo->Fcb->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
2970                     pObjectInfo->Fcb->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
2971                     pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
2972
2973                     pCCFileObject = CcGetFileObjectFromSectionPtrs( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers);
2974
2975                     if ( pCCFileObject != NULL)
2976                     {
2977                         CcSetFileSizes( pCCFileObject,
2978                                         (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
2979                     }
2980
2981                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Resource);
2982                 }
2983                 else
2984                 {
2985
2986                     //
2987                     // Update the metadata for the entry
2988                     //
2989
2990                     ntStatus = AFSUpdateMetaData( DirEntry,
2991                                                   pDirEnumEntry);
2992
2993                     if( !NT_SUCCESS( ntStatus))
2994                     {
2995
2996                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2997                                       AFS_TRACE_LEVEL_ERROR,
2998                                       "AFSVerifyEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX ntStatus %08lX\n",
2999                                       &DirEntry->NameInformation.FileName,
3000                                       pObjectInfo->FileId.Cell,
3001                                       pObjectInfo->FileId.Volume,
3002                                       pObjectInfo->FileId.Vnode,
3003                                       pObjectInfo->FileId.Unique,
3004                                       ntStatus);
3005
3006                         break;
3007                     }
3008
3009                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3010                                   AFS_TRACE_LEVEL_WARNING,
3011                                   "AFSVerifyEntry Fcb NULL %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3012                                   &DirEntry->NameInformation.FileName,
3013                                   pObjectInfo->FileId.Cell,
3014                                   pObjectInfo->FileId.Volume,
3015                                   pObjectInfo->FileId.Vnode,
3016                                   pObjectInfo->FileId.Unique);
3017                 }
3018
3019                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3020
3021                 break;
3022             }
3023
3024             case AFS_FILE_TYPE_DIRECTORY:
3025             {
3026
3027                 AFSFcb *pCurrentFcb = NULL;
3028                 AFSDirectoryCB *pCurrentDirEntry = NULL;
3029
3030                 //
3031                 // For a directory or root entry flush the content of
3032                 // the directory enumeration.
3033                 //
3034
3035                 if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
3036                 {
3037
3038                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3039                                   AFS_TRACE_LEVEL_VERBOSE_2,
3040                                   "AFSVerifyEntry Validating directory content for entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3041                                   &DirEntry->NameInformation.FileName,
3042                                   pObjectInfo->FileId.Cell,
3043                                   pObjectInfo->FileId.Volume,
3044                                   pObjectInfo->FileId.Vnode,
3045                                   pObjectInfo->FileId.Unique);
3046
3047                     AFSAcquireExcl( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3048                                     TRUE);
3049
3050                     ntStatus = AFSValidateDirectoryCache( pObjectInfo,
3051                                                           AuthGroup);
3052
3053                     AFSReleaseResource( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
3054
3055                     if ( !NT_SUCCESS( ntStatus))
3056                     {
3057
3058                         try_return( ntStatus);
3059                     }
3060                 }
3061
3062                 //
3063                 // Update the metadata for the entry
3064                 //
3065
3066                 ntStatus = AFSUpdateMetaData( DirEntry,
3067                                               pDirEnumEntry);
3068
3069                 if( NT_SUCCESS( ntStatus))
3070                 {
3071
3072                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3073                 }
3074
3075                 break;
3076             }
3077
3078             case AFS_FILE_TYPE_DFSLINK:
3079             {
3080
3081                 UNICODE_STRING uniTargetName;
3082
3083                 //
3084                 // For a DFS link need to check the target name has not changed
3085                 //
3086
3087                 uniTargetName.Length = (USHORT)pDirEnumEntry->TargetNameLength;
3088
3089                 uniTargetName.MaximumLength = uniTargetName.Length;
3090
3091                 uniTargetName.Buffer = (WCHAR *)((char *)pDirEnumEntry + pDirEnumEntry->TargetNameOffset);
3092
3093                 AFSAcquireExcl( &DirEntry->NonPaged->Lock,
3094                                 TRUE);
3095
3096                 if( DirEntry->NameInformation.TargetName.Length == 0 ||
3097                     RtlCompareUnicodeString( &uniTargetName,
3098                                              &DirEntry->NameInformation.TargetName,
3099                                              TRUE) != 0)
3100                 {
3101
3102                     //
3103                     // Update the target name
3104                     //
3105
3106                     ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
3107                                                     &DirEntry->Flags,
3108                                                     uniTargetName.Buffer,
3109                                                     uniTargetName.Length);
3110
3111                     if( !NT_SUCCESS( ntStatus))
3112                     {
3113
3114                         AFSReleaseResource( &DirEntry->NonPaged->Lock);
3115
3116                         break;
3117                     }
3118                 }
3119
3120                 AFSReleaseResource( &DirEntry->NonPaged->Lock);
3121
3122                 //
3123                 // Update the metadata for the entry
3124                 //
3125
3126                 ntStatus = AFSUpdateMetaData( DirEntry,
3127                                               pDirEnumEntry);
3128
3129                 if( NT_SUCCESS( ntStatus))
3130                 {
3131
3132                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3133                 }
3134
3135                 break;
3136             }
3137
3138             default:
3139
3140                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3141                               AFS_TRACE_LEVEL_WARNING,
3142                               "AFSVerifyEntry Attempt to verify node of type %d %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3143                               pObjectInfo->FileType,
3144                               &DirEntry->NameInformation.FileName,
3145                               pObjectInfo->FileId.Cell,
3146                               pObjectInfo->FileId.Volume,
3147                               pObjectInfo->FileId.Vnode,
3148                               pObjectInfo->FileId.Unique);
3149
3150                 break;
3151         }
3152
3153  try_exit:
3154
3155         if( pDirEnumEntry != NULL)
3156         {
3157
3158             AFSExFreePoolWithTag( pDirEnumEntry, AFS_GENERIC_MEMORY_2_TAG);
3159         }
3160     }
3161
3162     return ntStatus;
3163 }
3164
3165 NTSTATUS
3166 AFSSetVolumeState( IN AFSVolumeStatusCB *VolumeStatus)
3167 {
3168
3169     NTSTATUS ntStatus = STATUS_SUCCESS;
3170     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
3171     ULONGLONG   ullIndex = 0;
3172     AFSVolumeCB *pVolumeCB = NULL;
3173     AFSFcb *pFcb = NULL;
3174     AFSObjectInfoCB *pCurrentObject = NULL;
3175     LONG lCount;
3176
3177     __Enter
3178     {
3179
3180         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3181                       AFS_TRACE_LEVEL_VERBOSE,
3182                       "AFSSetVolumeState Marking volume state %d Volume Cell %08lX Volume %08lX\n",
3183                       VolumeStatus->Online,
3184                       VolumeStatus->FileID.Cell,
3185                       VolumeStatus->FileID.Volume);
3186
3187         //
3188         // Need to locate the Fcb for the directory to purge
3189         //
3190
3191         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3192                       AFS_TRACE_LEVEL_VERBOSE,
3193                       "AFSSetVolumeState Acquiring RDR VolumeTreeLock lock %08lX SHARED %08lX\n",
3194                       &pDevExt->Specific.RDR.VolumeTreeLock,
3195                       PsGetCurrentThread());
3196
3197         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
3198
3199         //
3200         // Locate the volume node
3201         //
3202
3203         ullIndex = AFSCreateHighIndex( &VolumeStatus->FileID);
3204
3205         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
3206                                        ullIndex,
3207                                        (AFSBTreeEntry **)&pVolumeCB);
3208
3209         if( pVolumeCB != NULL)
3210         {
3211
3212             lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
3213
3214             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3215
3216             //
3217             // Set the volume state accordingly
3218             //
3219
3220             if( VolumeStatus->Online)
3221             {
3222
3223                 InterlockedAnd( (LONG *)&(pVolumeCB->Flags), ~AFS_VOLUME_FLAGS_OFFLINE);
3224             }
3225             else
3226             {
3227
3228                 InterlockedOr( (LONG *)&(pVolumeCB->Flags), AFS_VOLUME_FLAGS_OFFLINE);
3229             }
3230
3231             AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
3232                               TRUE);
3233
3234             pCurrentObject = pVolumeCB->ObjectInfoListHead;;
3235
3236             while( pCurrentObject != NULL)
3237             {
3238
3239                 if( VolumeStatus->Online)
3240                 {
3241
3242                     ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
3243
3244                     SetFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_VERIFY);
3245
3246                     pCurrentObject->DataVersion.QuadPart = (ULONGLONG)-1;
3247                 }
3248                 else
3249                 {
3250
3251                     SetFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
3252                 }
3253
3254                 pFcb = pCurrentObject->Fcb;
3255
3256                 if( pFcb != NULL &&
3257                     !(VolumeStatus->Online) &&
3258                     pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
3259                 {
3260
3261                     AFSDbgLogMsg( AFS_SUBSYSTEM_EXTENT_PROCESSING,
3262                                   AFS_TRACE_LEVEL_ERROR,
3263                                   "AFSSetVolumeState Marking volume offline and canceling extents Volume Cell %08lX Volume %08lX\n",
3264                                   VolumeStatus->FileID.Cell,
3265                                   VolumeStatus->FileID.Volume);
3266
3267                     //
3268                     // Clear out the extents
3269                     //
3270
3271                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3272                                   AFS_TRACE_LEVEL_VERBOSE,
3273                                   "AFSSetVolumeState Acquiring Fcb extents lock %08lX EXCL %08lX\n",
3274                                   &pFcb->NPFcb->Specific.File.ExtentsResource,
3275                                   PsGetCurrentThread());
3276
3277                     AFSAcquireExcl( &pFcb->NPFcb->Specific.File.ExtentsResource,
3278                                     TRUE);
3279
3280                     pFcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_CANCELLED;
3281
3282                     KeSetEvent( &pFcb->NPFcb->Specific.File.ExtentsRequestComplete,
3283                                 0,
3284                                 FALSE);
3285
3286                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3287                                   AFS_TRACE_LEVEL_VERBOSE,
3288                                   "AFSSetVolumeState Releasing Fcb extents lock %08lX EXCL %08lX\n",
3289                                   &pFcb->NPFcb->Specific.File.ExtentsResource,
3290                                   PsGetCurrentThread());
3291
3292                     AFSReleaseResource( &pFcb->NPFcb->Specific.File.ExtentsResource);
3293
3294                     //
3295                     // And get rid of them (note this involves waiting
3296                     // for any writes or reads to the cache to complete)
3297                     //
3298
3299                     AFSTearDownFcbExtents( pFcb,
3300                                            NULL);
3301                 }
3302
3303                 pCurrentObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
3304             }
3305
3306             AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
3307
3308             lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
3309         }
3310         else
3311         {
3312
3313             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3314         }
3315     }
3316
3317     return ntStatus;
3318 }
3319
3320 NTSTATUS
3321 AFSSetNetworkState( IN AFSNetworkStatusCB *NetworkStatus)
3322 {
3323
3324     NTSTATUS ntStatus = STATUS_SUCCESS;
3325
3326     __Enter
3327     {
3328
3329         if( AFSGlobalRoot == NULL)
3330         {
3331
3332             try_return( ntStatus);
3333         }
3334
3335         AFSAcquireExcl( AFSGlobalRoot->VolumeLock,
3336                         TRUE);
3337
3338         //
3339         // Set the network state according to the information
3340         //
3341
3342         if( NetworkStatus->Online)
3343         {
3344
3345             ClearFlag( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE);
3346         }
3347         else
3348         {
3349
3350             SetFlag( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE);
3351         }
3352
3353         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3354
3355 try_exit:
3356
3357         NOTHING;
3358     }
3359
3360     return ntStatus;
3361 }
3362
3363 NTSTATUS
3364 AFSValidateDirectoryCache( IN AFSObjectInfoCB *ObjectInfo,
3365                            IN GUID *AuthGroup)
3366 {
3367
3368     NTSTATUS ntStatus = STATUS_SUCCESS;
3369     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
3370     BOOLEAN  bAcquiredLock = FALSE;
3371     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
3372     AFSFcb *pFcb = NULL;
3373
3374     __Enter
3375     {
3376
3377         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3378                       AFS_TRACE_LEVEL_VERBOSE,
3379                       "AFSValidateDirectoryCache Validating content for FID %08lX-%08lX-%08lX-%08lX\n",
3380                       ObjectInfo->FileId.Cell,
3381                       ObjectInfo->FileId.Volume,
3382                       ObjectInfo->FileId.Vnode,
3383                       ObjectInfo->FileId.Unique);
3384
3385         if( !ExIsResourceAcquiredLite( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock))
3386         {
3387
3388             AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3389                           AFS_TRACE_LEVEL_VERBOSE,
3390                           "AFSValidateDirectoryCache Acquiring DirectoryNodeHdr.TreeLock lock %08lX EXCL %08lX\n",
3391                           ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3392                           PsGetCurrentThread());
3393
3394             AFSAcquireExcl( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3395                             TRUE);
3396
3397             bAcquiredLock = TRUE;
3398         }
3399
3400         //
3401         // Check for inconsistency between DirectoryNodeList and DirectoryNodeCount
3402         //
3403
3404         if ( ObjectInfo->Specific.Directory.DirectoryNodeListHead == NULL &&
3405              ObjectInfo->Specific.Directory.DirectoryNodeCount > 0)
3406         {
3407
3408             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3409                           AFS_TRACE_LEVEL_ERROR,
3410                           "AFSValidateDirectoryCache Empty Node List but Non-Zero Node Count %08lX for dir FID %08lX-%08lX-%08lX-%08lX\n",
3411                           ObjectInfo->Specific.Directory.DirectoryNodeCount,
3412                           ObjectInfo->FileId.Cell,
3413                           ObjectInfo->FileId.Volume,
3414                           ObjectInfo->FileId.Vnode,
3415                           ObjectInfo->FileId.Unique);
3416         }
3417
3418         //
3419         // Reset the directory list information by clearing all valid entries
3420         //
3421
3422         pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
3423
3424         while( pCurrentDirEntry != NULL)
3425         {
3426
3427             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
3428
3429             if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_FAKE))
3430             {
3431
3432                 //
3433                 // If this entry has been deleted then process it here
3434                 //
3435
3436                 if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED) &&
3437                     pCurrentDirEntry->OpenReferenceCount == 0)
3438                 {
3439
3440                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3441                                   AFS_TRACE_LEVEL_VERBOSE,
3442                                   "AFSValidateDirectoryCache Deleting dir entry %p name %wZ\n",
3443                                   pCurrentDirEntry,
3444                                   &pCurrentDirEntry->NameInformation.FileName);
3445
3446                     AFSDeleteDirEntry( ObjectInfo,
3447                                        pCurrentDirEntry);
3448                 }
3449                 else
3450                 {
3451
3452                     ClearFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_VALID);
3453
3454                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3455                                   AFS_TRACE_LEVEL_VERBOSE,
3456                                   "AFSValidateDirectoryCache Clear VALID flag on DE %p Reference count %08lX\n",
3457                                   pCurrentDirEntry,
3458                                   pCurrentDirEntry->OpenReferenceCount);
3459
3460                     //
3461                     // We pull the short name from the parent tree since it could change below
3462                     //
3463
3464                     if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME))
3465                     {
3466
3467                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3468                                       AFS_TRACE_LEVEL_VERBOSE,
3469                                       "AFSValidateDirectoryCache Removing DE %p (%08lX) from shortname tree for %wZ\n",
3470                                       pCurrentDirEntry,
3471                                       pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex,
3472                                       &pCurrentDirEntry->NameInformation.FileName);
3473
3474                         AFSRemoveShortNameDirEntry( &ObjectInfo->Specific.Directory.ShortNameTree,
3475                                                     pCurrentDirEntry);
3476
3477                         ClearFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3478                     }
3479                 }
3480             }
3481
3482             pCurrentDirEntry = pNextDirEntry;
3483         }
3484
3485         //
3486         // Reget the directory contents
3487         //
3488
3489         ntStatus = AFSVerifyDirectoryContent( ObjectInfo,
3490                                               AuthGroup);
3491
3492         if ( !NT_SUCCESS( ntStatus))
3493         {
3494             try_return( ntStatus);
3495         }
3496
3497         //
3498         // Now start again and tear down any entries not valid
3499         //
3500
3501         pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
3502
3503         while( pCurrentDirEntry != NULL)
3504         {
3505
3506             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
3507
3508             if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_VALID))
3509             {
3510
3511                 if( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
3512                     !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME) &&
3513                     pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex > 0)
3514                 {
3515
3516                     if( ObjectInfo->Specific.Directory.ShortNameTree == NULL)
3517                     {
3518
3519                         ObjectInfo->Specific.Directory.ShortNameTree = pCurrentDirEntry;
3520
3521                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3522                                       AFS_TRACE_LEVEL_VERBOSE,
3523                                       "AFSValidateDirectoryCache Insert DE %p to head of shortname tree for %wZ\n",
3524                                       pCurrentDirEntry,
3525                                       &pCurrentDirEntry->NameInformation.FileName);
3526
3527                         SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3528                     }
3529                     else
3530                     {
3531
3532                         if( !NT_SUCCESS( AFSInsertShortNameDirEntry( ObjectInfo->Specific.Directory.ShortNameTree,
3533                                                                      pCurrentDirEntry)))
3534                         {
3535                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3536                                           AFS_TRACE_LEVEL_VERBOSE,
3537                                           "AFSValidateDirectoryCache Failed to insert DE %p (%08lX) to shortname tree for %wZ\n",
3538                                           pCurrentDirEntry,
3539                                           pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex,
3540                                           &pCurrentDirEntry->NameInformation.FileName);
3541                         }
3542                         else
3543                         {
3544                             SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3545
3546                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3547                                           AFS_TRACE_LEVEL_VERBOSE,
3548                                           "AFSValidateDirectoryCache Insert DE %p to shortname tree for %wZ\n",
3549                                           pCurrentDirEntry,
3550                                           &pCurrentDirEntry->NameInformation.FileName);
3551                         }
3552                     }
3553                 }
3554
3555                 pCurrentDirEntry = pNextDirEntry;
3556
3557                 continue;
3558             }
3559
3560             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3561                           AFS_TRACE_LEVEL_VERBOSE,
3562                           "AFSValidateDirectoryCache Processing INVALID DE %p Reference count %08lX\n",
3563                           pCurrentDirEntry,
3564                           pCurrentDirEntry->OpenReferenceCount);
3565
3566             if( pCurrentDirEntry->OpenReferenceCount == 0)
3567             {
3568
3569                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3570                               AFS_TRACE_LEVEL_VERBOSE,
3571                               "AFSValidateDirectoryCache Deleting dir entry %wZ from parent FID %08lX-%08lX-%08lX-%08lX\n",
3572                               &pCurrentDirEntry->NameInformation.FileName,
3573                               ObjectInfo->FileId.Cell,
3574                               ObjectInfo->FileId.Volume,
3575                               ObjectInfo->FileId.Vnode,
3576                               ObjectInfo->FileId.Unique);
3577
3578                 AFSDeleteDirEntry( ObjectInfo,
3579                                    pCurrentDirEntry);
3580             }
3581             else
3582             {
3583
3584                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3585                               AFS_TRACE_LEVEL_VERBOSE,
3586                               "AFSValidateDirectoryCache Setting dir entry %p Name %wZ DELETED in parent FID %08lX-%08lX-%08lX-%08lX\n",
3587                               pCurrentDirEntry,
3588                               &pCurrentDirEntry->NameInformation.FileName,
3589                               ObjectInfo->FileId.Cell,
3590                               ObjectInfo->FileId.Volume,
3591                               ObjectInfo->FileId.Vnode,
3592                               ObjectInfo->FileId.Unique);
3593
3594                 SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
3595
3596                 AFSRemoveNameEntry( ObjectInfo,
3597                                     pCurrentDirEntry);
3598             }
3599
3600             pCurrentDirEntry = pNextDirEntry;
3601         }
3602
3603 #if DBG
3604         if( !AFSValidateDirList( ObjectInfo))
3605         {
3606
3607             AFSPrint("AFSValidateDirectoryCache Invalid count ...\n");
3608         }
3609 #endif
3610
3611 try_exit:
3612
3613         if( bAcquiredLock)
3614         {
3615
3616             AFSReleaseResource( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
3617         }
3618     }
3619
3620     return ntStatus;
3621 }
3622
3623 BOOLEAN
3624 AFSIsVolumeFID( IN AFSFileID *FileID)
3625 {
3626
3627     BOOLEAN bIsVolume = FALSE;
3628
3629     if( FileID->Vnode == 1 &&
3630         FileID->Unique == 1)
3631     {
3632
3633         bIsVolume = TRUE;
3634     }
3635
3636     return bIsVolume;
3637 }
3638
3639 BOOLEAN
3640 AFSIsFinalNode( IN AFSFcb *Fcb)
3641 {
3642
3643     BOOLEAN bIsFinalNode = FALSE;
3644
3645     if( Fcb->Header.NodeTypeCode == AFS_ROOT_FCB ||
3646         Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB ||
3647         Fcb->Header.NodeTypeCode == AFS_FILE_FCB ||
3648         Fcb->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
3649         Fcb->Header.NodeTypeCode == AFS_INVALID_FCB )
3650     {
3651
3652         bIsFinalNode = TRUE;
3653     }
3654     else
3655     {
3656
3657         ASSERT( Fcb->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
3658                 Fcb->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB);
3659     }
3660
3661     return bIsFinalNode;
3662 }
3663
3664 NTSTATUS
3665 AFSUpdateMetaData( IN AFSDirectoryCB *DirEntry,
3666                    IN AFSDirEnumEntry *DirEnumEntry)
3667 {
3668
3669     NTSTATUS ntStatus = STATUS_SUCCESS;
3670     UNICODE_STRING uniTargetName;
3671     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
3672
3673     __Enter
3674     {
3675
3676         pObjectInfo->TargetFileId = DirEnumEntry->TargetFileId;
3677
3678         pObjectInfo->Expiration = DirEnumEntry->Expiration;
3679
3680         pObjectInfo->DataVersion = DirEnumEntry->DataVersion;
3681
3682         pObjectInfo->FileType = DirEnumEntry->FileType;
3683
3684         pObjectInfo->CreationTime = DirEnumEntry->CreationTime;
3685
3686         pObjectInfo->LastAccessTime = DirEnumEntry->LastAccessTime;
3687
3688         pObjectInfo->LastWriteTime = DirEnumEntry->LastWriteTime;
3689
3690         pObjectInfo->ChangeTime = DirEnumEntry->ChangeTime;
3691
3692         pObjectInfo->EndOfFile = DirEnumEntry->EndOfFile;
3693
3694         pObjectInfo->AllocationSize = DirEnumEntry->AllocationSize;
3695
3696         pObjectInfo->FileAttributes = DirEnumEntry->FileAttributes;
3697
3698         if( pObjectInfo->FileType == AFS_FILE_TYPE_MOUNTPOINT)
3699         {
3700
3701             pObjectInfo->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
3702         }
3703
3704         if( pObjectInfo->FileType == AFS_FILE_TYPE_SYMLINK ||
3705             pObjectInfo->FileType == AFS_FILE_TYPE_DFSLINK)
3706         {
3707
3708             pObjectInfo->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
3709         }
3710
3711         pObjectInfo->EaSize = DirEnumEntry->EaSize;
3712
3713         pObjectInfo->Links = DirEnumEntry->Links;
3714
3715         if( DirEnumEntry->TargetNameLength > 0)
3716         {
3717
3718             //
3719             // Update the target name information if needed
3720             //
3721
3722             uniTargetName.Length = (USHORT)DirEnumEntry->TargetNameLength;
3723
3724             uniTargetName.MaximumLength = uniTargetName.Length;
3725
3726             uniTargetName.Buffer = (WCHAR *)((char *)DirEnumEntry + DirEnumEntry->TargetNameOffset);
3727
3728             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
3729                             TRUE);
3730
3731             if( DirEntry->NameInformation.TargetName.Length == 0 ||
3732                 RtlCompareUnicodeString( &uniTargetName,
3733                                          &DirEntry->NameInformation.TargetName,
3734                                          TRUE) != 0)
3735             {
3736
3737                 //
3738                 // Update the target name
3739                 //
3740
3741                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
3742                                                 &DirEntry->Flags,
3743                                                 uniTargetName.Buffer,
3744                                                 uniTargetName.Length);
3745
3746                 if( !NT_SUCCESS( ntStatus))
3747                 {
3748
3749                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
3750
3751                     try_return( ntStatus);
3752                 }
3753             }
3754
3755             AFSReleaseResource( &DirEntry->NonPaged->Lock);
3756         }
3757         else if( DirEntry->NameInformation.TargetName.Length > 0)
3758         {
3759
3760             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
3761                             TRUE);
3762
3763             if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER) &&
3764                 DirEntry->NameInformation.TargetName.Buffer != NULL)
3765             {
3766                 AFSExFreePoolWithTag( DirEntry->NameInformation.TargetName.Buffer, AFS_NAME_BUFFER_FIVE_TAG);
3767             }
3768
3769             ClearFlag( DirEntry->Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER);
3770
3771             DirEntry->NameInformation.TargetName.Length = 0;
3772             DirEntry->NameInformation.TargetName.MaximumLength = 0;
3773             DirEntry->NameInformation.TargetName.Buffer = NULL;
3774
3775             AFSReleaseResource( &DirEntry->NonPaged->Lock);
3776         }
3777
3778 try_exit:
3779
3780         NOTHING;
3781     }
3782
3783     return ntStatus;
3784 }
3785
3786 NTSTATUS
3787 AFSValidateEntry( IN AFSDirectoryCB *DirEntry,
3788                   IN GUID *AuthGroup,
3789                   IN BOOLEAN FastCall)
3790 {
3791
3792     NTSTATUS ntStatus = STATUS_SUCCESS;
3793     LARGE_INTEGER liSystemTime;
3794     AFSDirEnumEntry *pDirEnumEntry = NULL;
3795     AFSFcb *pCurrentFcb = NULL;
3796     BOOLEAN bReleaseFcb = FALSE;
3797     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
3798
3799     __Enter
3800     {
3801
3802         //
3803         // If we have an Fcb hanging off the directory entry then be sure to acquire the locks in the
3804         // correct order
3805         //
3806
3807         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3808                       AFS_TRACE_LEVEL_VERBOSE_2,
3809                       "AFSValidateEntry Validating entry %wZ FID %08lX-%08lX-%08lX-%08lX FastCall %u\n",
3810                       &DirEntry->NameInformation.FileName,
3811                       pObjectInfo->FileId.Cell,
3812                       pObjectInfo->FileId.Volume,
3813                       pObjectInfo->FileId.Vnode,
3814                       pObjectInfo->FileId.Unique,
3815                       FastCall);
3816
3817         //
3818         // If this is a fake node then bail since the service knows nothing about it
3819         //
3820
3821         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_FAKE))
3822         {
3823
3824             try_return( ntStatus);
3825         }
3826
3827         //
3828         // This routine ensures that the current entry is valid by:
3829         //
3830         //      1) Checking that the expiration time is non-zero and after where we
3831         //         currently are
3832         //
3833
3834         KeQuerySystemTime( &liSystemTime);
3835
3836         if( !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED) &&
3837             !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY) &&
3838             !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA) &&
3839             pObjectInfo->Expiration.QuadPart >= liSystemTime.QuadPart)
3840         {
3841
3842             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3843                           AFS_TRACE_LEVEL_VERBOSE_2,
3844                           "AFSValidateEntry Directory entry %wZ FID %08lX-%08lX-%08lX-%08lX VALID\n",
3845                           &DirEntry->NameInformation.FileName,
3846                           pObjectInfo->FileId.Cell,
3847                           pObjectInfo->FileId.Volume,
3848                           pObjectInfo->FileId.Vnode,
3849                           pObjectInfo->FileId.Unique);
3850
3851             try_return( ntStatus);
3852         }
3853
3854         //
3855         // This node requires updating
3856         //
3857
3858         ntStatus = AFSEvaluateTargetByID( pObjectInfo,
3859                                           AuthGroup,
3860                                           FastCall,
3861                                           &pDirEnumEntry);
3862
3863         if( !NT_SUCCESS( ntStatus))
3864         {
3865
3866             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3867                           AFS_TRACE_LEVEL_ERROR,
3868                           "AFSValidateEntry Failed to evaluate entry FastCall %d %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
3869                           FastCall,
3870                           &DirEntry->NameInformation.FileName,
3871                           pObjectInfo->FileId.Cell,
3872                           pObjectInfo->FileId.Volume,
3873                           pObjectInfo->FileId.Vnode,
3874                           pObjectInfo->FileId.Unique,
3875                           ntStatus);
3876
3877             //
3878             // Failed validation of node so return access-denied
3879             //
3880
3881             try_return( ntStatus);
3882         }
3883
3884         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3885                       AFS_TRACE_LEVEL_VERBOSE,
3886                       "AFSValidateEntry Validating entry FastCall %d %wZ FID %08lX-%08lX-%08lX-%08lX DV %I64X returned DV %I64X FT %d\n",
3887                       FastCall,
3888                       &DirEntry->NameInformation.FileName,
3889                       pObjectInfo->FileId.Cell,
3890                       pObjectInfo->FileId.Volume,
3891                       pObjectInfo->FileId.Vnode,
3892                       pObjectInfo->FileId.Unique,
3893                       pObjectInfo->DataVersion.QuadPart,
3894                       pDirEnumEntry->DataVersion.QuadPart,
3895                       pDirEnumEntry->FileType);
3896
3897
3898         //
3899         // Based on the file type, process the node
3900         //
3901
3902         switch( pDirEnumEntry->FileType)
3903         {
3904
3905             case AFS_FILE_TYPE_MOUNTPOINT:
3906             {
3907
3908                 //
3909                 // Update the metadata for the entry
3910                 //
3911
3912                 ntStatus = AFSUpdateMetaData( DirEntry,
3913                                               pDirEnumEntry);
3914
3915                 if( NT_SUCCESS( ntStatus))
3916                 {
3917
3918                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
3919                 }
3920
3921                 break;
3922             }
3923
3924             case AFS_FILE_TYPE_SYMLINK:
3925             case AFS_FILE_TYPE_DFSLINK:
3926             {
3927
3928                 //
3929                 // Update the metadata for the entry
3930                 //
3931
3932                 ntStatus = AFSUpdateMetaData( DirEntry,
3933                                               pDirEnumEntry);
3934
3935                 if( NT_SUCCESS( ntStatus))
3936                 {
3937
3938                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
3939                 }
3940
3941                 break;
3942             }
3943
3944             case AFS_FILE_TYPE_FILE:
3945             {
3946
3947                 //
3948                 // For a file where the data version has become invalid we need to
3949                 // fail any current extent requests and purge the cache for the file
3950                 // Can't hold the Fcb resource while doing this
3951                 //
3952
3953                 if( pObjectInfo->Fcb != NULL &&
3954                     (pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart ||
3955                       BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA)))
3956                 {
3957
3958                     pCurrentFcb = pObjectInfo->Fcb;
3959
3960                     if( !ExIsResourceAcquiredLite( &pCurrentFcb->NPFcb->Resource))
3961                     {
3962
3963                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3964                                       AFS_TRACE_LEVEL_VERBOSE,
3965                                       "AFSValidateEntry Acquiring Fcb lock %08lX EXCL %08lX\n",
3966                                       &pCurrentFcb->NPFcb->Resource,
3967                                       PsGetCurrentThread());
3968
3969                         AFSAcquireExcl( &pCurrentFcb->NPFcb->Resource,
3970                                         TRUE);
3971
3972                         bReleaseFcb = TRUE;
3973                     }
3974
3975                     if( pCurrentFcb != NULL)
3976                     {
3977
3978                         IO_STATUS_BLOCK stIoStatus;
3979                         BOOLEAN bPurgeExtents = FALSE;
3980
3981                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3982                                       AFS_TRACE_LEVEL_VERBOSE_2,
3983                                       "AFSValidateEntry Flush/purge entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3984                                       &DirEntry->NameInformation.FileName,
3985                                       pObjectInfo->FileId.Cell,
3986                                       pObjectInfo->FileId.Volume,
3987                                       pObjectInfo->FileId.Vnode,
3988                                       pObjectInfo->FileId.Unique);
3989
3990                         if ( pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart)
3991                         {
3992
3993                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3994                                           AFS_TRACE_LEVEL_VERBOSE,
3995                                           "AFSValidateEntry DV Change %wZ FID %08lX-%08lX-%08lX-%08lX (%08lX != %08lX)\n",
3996                                           &DirEntry->NameInformation.FileName,
3997                                           pObjectInfo->FileId.Cell,
3998                                           pObjectInfo->FileId.Volume,
3999                                           pObjectInfo->FileId.Vnode,
4000                                           pObjectInfo->FileId.Unique,
4001                                           pObjectInfo->DataVersion.LowPart,
4002                                           pDirEnumEntry->DataVersion.LowPart
4003                                           );
4004
4005                             bPurgeExtents = TRUE;
4006                         }
4007
4008                         if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
4009                         {
4010                             bPurgeExtents = TRUE;
4011
4012                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4013                                           AFS_TRACE_LEVEL_VERBOSE,
4014                                           "AFSVerifyEntry Clearing VERIFY_DATA flag %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4015                                           &DirEntry->NameInformation.FileName,
4016                                           pObjectInfo->FileId.Cell,
4017                                           pObjectInfo->FileId.Volume,
4018                                           pObjectInfo->FileId.Vnode,
4019                                           pObjectInfo->FileId.Unique);
4020
4021                             ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
4022                         }
4023
4024                         __try
4025                         {
4026
4027                             CcFlushCache( &pCurrentFcb->NPFcb->SectionObjectPointers,
4028                                           NULL,
4029                                           0,
4030                                           &stIoStatus);
4031
4032                             if( !NT_SUCCESS( stIoStatus.Status))
4033                             {
4034
4035                                 AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
4036                                               AFS_TRACE_LEVEL_ERROR,
4037                                               "AFSValidateEntry CcFlushCache failure %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
4038                                               &DirEntry->NameInformation.FileName,
4039                                               pObjectInfo->FileId.Cell,
4040                                               pObjectInfo->FileId.Volume,
4041                                               pObjectInfo->FileId.Vnode,
4042                                               pObjectInfo->FileId.Unique,
4043                                               stIoStatus.Status,
4044                                               stIoStatus.Information);
4045
4046                                 ntStatus = stIoStatus.Status;
4047                             }
4048
4049                             if ( bPurgeExtents)
4050                             {
4051
4052                                 if ( !CcPurgeCacheSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
4053                                                            NULL,
4054                                                            0,
4055                                                            FALSE))
4056                                 {
4057
4058                                     AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
4059                                                   AFS_TRACE_LEVEL_WARNING,
4060                                                   "AFSValidateEntry CcPurgeCacheSection failure %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4061                                                   &DirEntry->NameInformation.FileName,
4062                                                   pObjectInfo->FileId.Cell,
4063                                                   pObjectInfo->FileId.Volume,
4064                                                   pObjectInfo->FileId.Vnode,
4065                                                   pObjectInfo->FileId.Unique);
4066
4067                                     SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
4068                                 }
4069                             }
4070                         }
4071                         __except( EXCEPTION_EXECUTE_HANDLER)
4072                         {
4073                             ntStatus = GetExceptionCode();
4074
4075                             AFSDbgLogMsg( 0,
4076                                           0,
4077                                           "EXCEPTION - AFSValidateEntry CcFlushCache or CcPurgeCacheSection %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
4078                                           &DirEntry->NameInformation.FileName,
4079                                           pObjectInfo->FileId.Cell,
4080                                           pObjectInfo->FileId.Volume,
4081                                           pObjectInfo->FileId.Vnode,
4082                                           pObjectInfo->FileId.Unique,
4083                                           ntStatus);
4084
4085                             SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
4086                         }
4087
4088                         AFSReleaseResource( &pCurrentFcb->NPFcb->Resource);
4089
4090                         bReleaseFcb = FALSE;
4091
4092                         if ( bPurgeExtents)
4093                         {
4094                             AFSFlushExtents( pCurrentFcb,
4095                                              AuthGroup);
4096                         }
4097                     }
4098                 }
4099
4100                 //
4101                 // Update the metadata for the entry
4102                 //
4103
4104                 ntStatus = AFSUpdateMetaData( DirEntry,
4105                                               pDirEnumEntry);
4106
4107                 if( !NT_SUCCESS( ntStatus))
4108                 {
4109
4110                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4111                                   AFS_TRACE_LEVEL_ERROR,
4112                                   "AFSValidateEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
4113                                   &DirEntry->NameInformation.FileName,
4114                                   pObjectInfo->FileId.Cell,
4115                                   pObjectInfo->FileId.Volume,
4116                                   pObjectInfo->FileId.Vnode,
4117                                   pObjectInfo->FileId.Unique,
4118                                   ntStatus);
4119
4120                     break;
4121                 }
4122
4123                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
4124
4125                 //
4126                 // Update file sizes
4127                 //
4128
4129                 if( pObjectInfo->Fcb != NULL)
4130                 {
4131                     FILE_OBJECT *pCCFileObject = CcGetFileObjectFromSectionPtrs( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers);
4132
4133                     pObjectInfo->Fcb->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
4134                     pObjectInfo->Fcb->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
4135                     pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
4136
4137                     if ( pCCFileObject != NULL)
4138                     {
4139                         CcSetFileSizes( pCCFileObject,
4140                                         (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
4141                     }
4142                 }
4143                 break;
4144             }
4145
4146             case AFS_FILE_TYPE_DIRECTORY:
4147             {
4148
4149                 AFSDirectoryCB *pCurrentDirEntry = NULL;
4150
4151                 if( pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart)
4152                 {
4153
4154                     //
4155                     // For a directory or root entry flush the content of
4156                     // the directory enumeration.
4157                     //
4158
4159                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
4160                                   AFS_TRACE_LEVEL_VERBOSE,
4161                                   "AFSValidateEntry Acquiring DirectoryNodeHdr.TreeLock lock %08lX EXCL %08lX\n",
4162                                   pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
4163                                   PsGetCurrentThread());
4164
4165                     if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
4166                     {
4167
4168                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4169                                       AFS_TRACE_LEVEL_VERBOSE_2,
4170                                       "AFSValidateEntry Validating directory content for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4171                                       &DirEntry->NameInformation.FileName,
4172                                       pObjectInfo->FileId.Cell,
4173                                       pObjectInfo->FileId.Volume,
4174                                       pObjectInfo->FileId.Vnode,
4175                                       pObjectInfo->FileId.Unique);
4176
4177                         AFSAcquireExcl( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
4178                                         TRUE);
4179
4180                         ntStatus = AFSValidateDirectoryCache( pObjectInfo,
4181                                                               AuthGroup);
4182
4183                         AFSReleaseResource( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
4184                     }
4185
4186                     if( !NT_SUCCESS( ntStatus))
4187                     {
4188
4189                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4190                                       AFS_TRACE_LEVEL_ERROR,
4191                                       "AFSValidateEntry Failed to re-enumerate %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4192                                       &DirEntry->NameInformation.FileName,
4193                                       pObjectInfo->FileId.Cell,
4194                                       pObjectInfo->FileId.Volume,
4195                                       pObjectInfo->FileId.Vnode,
4196                                       pObjectInfo->FileId.Unique,
4197                                       ntStatus);
4198
4199                         break;
4200                     }
4201                 }
4202
4203                 //
4204                 // Update the metadata for the entry
4205                 //
4206
4207                 ntStatus = AFSUpdateMetaData( DirEntry,
4208                                               pDirEnumEntry);
4209
4210                 if( NT_SUCCESS( ntStatus))
4211                 {
4212
4213                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY | AFS_OBJECT_FLAGS_NOT_EVALUATED);
4214                 }
4215
4216                 break;
4217             }
4218
4219             default:
4220
4221                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4222                               AFS_TRACE_LEVEL_WARNING,
4223                               "AFSValidateEntry Attempt to verify node of type %d FastCall %d %wZ FID %08lX-%08lX-%08lX-%08lX\n",
4224                               pObjectInfo->FileType,
4225                               FastCall,
4226                               &DirEntry->NameInformation.FileName,
4227                               pObjectInfo->FileId.Cell,
4228                               pObjectInfo->FileId.Volume,
4229                               pObjectInfo->FileId.Vnode,
4230                               pObjectInfo->FileId.Unique);
4231
4232                 break;
4233         }
4234
4235  try_exit:
4236
4237         if( bReleaseFcb)
4238         {
4239
4240             AFSReleaseResource( &pCurrentFcb->NPFcb->Resource);
4241         }
4242
4243         if( pDirEnumEntry != NULL)
4244         {
4245
4246             AFSExFreePoolWithTag( pDirEnumEntry, AFS_GENERIC_MEMORY_2_TAG);
4247         }
4248     }
4249
4250     return ntStatus;
4251 }
4252
4253 NTSTATUS
4254 AFSInitializeSpecialShareNameList()
4255 {
4256
4257     NTSTATUS ntStatus = STATUS_SUCCESS;
4258     AFSDirectoryCB *pDirNode = NULL, *pLastDirNode = NULL;
4259     AFSObjectInfoCB *pObjectInfoCB = NULL;
4260     UNICODE_STRING uniShareName;
4261     ULONG ulEntryLength = 0;
4262     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
4263
4264     __Enter
4265     {
4266
4267         RtlInitUnicodeString( &uniShareName,
4268                               L"PIPE\\srvsvc");
4269
4270         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
4271                                                0);
4272
4273         if( pObjectInfoCB == NULL)
4274         {
4275
4276             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4277         }
4278
4279         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4280                       AFS_TRACE_LEVEL_VERBOSE,
4281                       "AFSInitializeSpecialShareNameList (srvsvc) Initializing count (1) on object %08lX\n",
4282                       pObjectInfoCB);
4283
4284         pObjectInfoCB->ObjectReferenceCount = 1;
4285
4286         pObjectInfoCB->FileType = AFS_FILE_TYPE_SPECIAL_SHARE_NAME;
4287
4288         ulEntryLength = sizeof( AFSDirectoryCB) +
4289                                      uniShareName.Length;
4290
4291         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
4292                                                                   ulEntryLength,
4293                                                                   AFS_DIR_ENTRY_TAG);
4294
4295         if( pDirNode == NULL)
4296         {
4297
4298             AFSDeleteObjectInfo( pObjectInfoCB);
4299
4300             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4301         }
4302
4303         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
4304                                                                                    sizeof( AFSNonPagedDirectoryCB),
4305                                                                                    AFS_DIR_ENTRY_NP_TAG);
4306
4307         if( pNonPagedDirEntry == NULL)
4308         {
4309
4310             ExFreePool( pDirNode);
4311
4312             AFSDeleteObjectInfo( pObjectInfoCB);
4313
4314             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4315         }
4316
4317         RtlZeroMemory( pDirNode,
4318                        ulEntryLength);
4319
4320         RtlZeroMemory( pNonPagedDirEntry,
4321                        sizeof( AFSNonPagedDirectoryCB));
4322
4323         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
4324
4325         pDirNode->NonPaged = pNonPagedDirEntry;
4326
4327         pDirNode->ObjectInformation = pObjectInfoCB;
4328
4329         //
4330         // Set valid entry
4331         //
4332
4333         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_SERVER_SERVICE);
4334
4335         pDirNode->NameInformation.FileName.Length = uniShareName.Length;
4336
4337         pDirNode->NameInformation.FileName.MaximumLength = uniShareName.Length;
4338
4339         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
4340
4341         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
4342                        uniShareName.Buffer,
4343                        pDirNode->NameInformation.FileName.Length);
4344
4345         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
4346                                                                        TRUE);
4347
4348         AFSSpecialShareNames = pDirNode;
4349
4350         pLastDirNode = pDirNode;
4351
4352         RtlInitUnicodeString( &uniShareName,
4353                               L"PIPE\\wkssvc");
4354
4355         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
4356                                                0);
4357
4358         if( pObjectInfoCB == NULL)
4359         {
4360
4361             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4362         }
4363
4364         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4365                       AFS_TRACE_LEVEL_VERBOSE,
4366                       "AFSInitializeSpecialShareNameList (wkssvc) Initializing count (1) on object %08lX\n",
4367                       pObjectInfoCB);
4368
4369         pObjectInfoCB->ObjectReferenceCount = 1;
4370
4371         pObjectInfoCB->FileType = AFS_FILE_TYPE_SPECIAL_SHARE_NAME;
4372
4373         ulEntryLength = sizeof( AFSDirectoryCB) +
4374                                      uniShareName.Length;
4375
4376         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
4377                                                                   ulEntryLength,
4378                                                                   AFS_DIR_ENTRY_TAG);
4379
4380         if( pDirNode == NULL)
4381         {
4382
4383             AFSDeleteObjectInfo( pObjectInfoCB);
4384
4385             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4386         }
4387
4388         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
4389                                                                                    sizeof( AFSNonPagedDirectoryCB),
4390                                                                                    AFS_DIR_ENTRY_NP_TAG);
4391
4392         if( pNonPagedDirEntry == NULL)
4393         {
4394
4395             ExFreePool( pDirNode);
4396
4397             AFSDeleteObjectInfo( pObjectInfoCB);
4398
4399             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4400         }
4401
4402         RtlZeroMemory( pDirNode,
4403                        ulEntryLength);
4404
4405         RtlZeroMemory( pNonPagedDirEntry,
4406                        sizeof( AFSNonPagedDirectoryCB));
4407
4408         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
4409
4410         pDirNode->NonPaged = pNonPagedDirEntry;
4411
4412         pDirNode->ObjectInformation = pObjectInfoCB;
4413
4414         //
4415         // Set valid entry
4416         //
4417
4418         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_WORKSTATION_SERVICE);
4419
4420         pDirNode->NameInformation.FileName.Length = uniShareName.Length;
4421
4422         pDirNode->NameInformation.FileName.MaximumLength = uniShareName.Length;
4423
4424         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
4425
4426         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
4427                        uniShareName.Buffer,
4428                        pDirNode->NameInformation.FileName.Length);
4429
4430         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
4431                                                                        TRUE);
4432
4433         pLastDirNode->ListEntry.fLink = pDirNode;
4434
4435         pDirNode->ListEntry.bLink = pLastDirNode;
4436
4437         pLastDirNode = pDirNode;
4438
4439         RtlInitUnicodeString( &uniShareName,
4440                               L"IPC$");
4441
4442         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
4443                                                0);
4444
4445         if( pObjectInfoCB == NULL)
4446         {
4447
4448             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4449         }
4450
4451         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
4452                       AFS_TRACE_LEVEL_VERBOSE,
4453                       "AFSInitializeSpecialShareNameList (ipc$) Initializing count (1) on object %08lX\n",
4454                       pObjectInfoCB);
4455
4456         pObjectInfoCB->ObjectReferenceCount = 1;
4457
4458         pObjectInfoCB->FileType = AFS_FILE_TYPE_SPECIAL_SHARE_NAME;
4459
4460         ulEntryLength = sizeof( AFSDirectoryCB) +
4461                                      uniShareName.Length;
4462
4463         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
4464                                                                   ulEntryLength,
4465                                                                   AFS_DIR_ENTRY_TAG);
4466
4467         if( pDirNode == NULL)
4468         {
4469
4470             AFSDeleteObjectInfo( pObjectInfoCB);
4471
4472             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4473         }
4474
4475         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
4476                                                                                    sizeof( AFSNonPagedDirectoryCB),
4477                                                                                    AFS_DIR_ENTRY_NP_TAG);
4478
4479         if( pNonPagedDirEntry == NULL)
4480         {
4481
4482             ExFreePool( pDirNode);
4483
4484             AFSDeleteObjectInfo( pObjectInfoCB);
4485
4486             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4487         }
4488
4489         RtlZeroMemory( pDirNode,
4490                        ulEntryLength);
4491
4492         RtlZeroMemory( pNonPagedDirEntry,
4493                        sizeof( AFSNonPagedDirectoryCB));
4494
4495         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
4496
4497         pDirNode->NonPaged = pNonPagedDirEntry;
4498
4499         pDirNode->ObjectInformation = pObjectInfoCB;
4500
4501         //
4502         // Set valid entry
4503         //
4504
4505         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_IPC);
4506
4507         pDirNode->NameInformation.FileName.Length = uniShareName.Length;
4508
4509         pDirNode->NameInformation.FileName.MaximumLength = uniShareName.Length;
4510
4511         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
4512
4513         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
4514                        uniShareName.Buffer,
4515                        pDirNode->NameInformation.FileName.Length);
4516
4517         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
4518                                                                        TRUE);
4519
4520         pLastDirNode->ListEntry.fLink = pDirNode;
4521
4522         pDirNode->ListEntry.bLink = pLastDirNode;
4523
4524 try_exit:
4525
4526         if( !NT_SUCCESS( ntStatus))
4527         {
4528
4529             if( AFSSpecialShareNames != NULL)
4530             {
4531
4532                 pDirNode = AFSSpecialShareNames;
4533
4534                 while( pDirNode != NULL)
4535                 {
4536
4537                     pLastDirNode = (AFSDirectoryCB *)pDirNode->ListEntry.fLink;
4538
4539                     AFSDeleteObjectInfo( pDirNode->ObjectInformation);
4540
4541                     ExDeleteResourceLite( &pDirNode->NonPaged->Lock);
4542
4543                     ExFreePool( pDirNode->NonPaged);
4544
4545                     ExFreePool( pDirNode);
4546
4547                     pDirNode = pLastDirNode;
4548                 }
4549
4550                 AFSSpecialShareNames = NULL;
4551             }
4552         }
4553     }
4554
4555     return ntStatus;
4556 }
4557
4558 AFSDirectoryCB *
4559 AFSGetSpecialShareNameEntry( IN UNICODE_STRING *ShareName,
4560                              IN UNICODE_STRING *SecondaryName)
4561 {
4562
4563     AFSDirectoryCB *pDirectoryCB = NULL;
4564     ULONGLONG ullHash = 0;
4565     UNICODE_STRING uniFullShareName;
4566
4567     __Enter
4568     {
4569
4570         //
4571         // Build up the entire name here. We are guaranteed that if there is a
4572         // secondary name, it is pointing to a portion of the share name buffer
4573         //
4574
4575         if( SecondaryName->Length > 0 &&
4576             SecondaryName->Buffer != NULL)
4577         {
4578
4579             uniFullShareName = *SecondaryName;
4580
4581             //
4582             // The calling routine strips off the leading slash so add it back in
4583             //
4584
4585             uniFullShareName.Buffer--;
4586             uniFullShareName.Length += sizeof( WCHAR);
4587             uniFullShareName.MaximumLength += sizeof( WCHAR);
4588
4589             //
4590             // And the share name
4591             //
4592
4593             uniFullShareName.Buffer -= (ShareName->Length/sizeof( WCHAR));
4594             uniFullShareName.Length += ShareName->Length;
4595             uniFullShareName.MaximumLength += ShareName->Length;
4596         }
4597         else
4598         {
4599
4600             uniFullShareName = *ShareName;
4601         }
4602
4603         //
4604         // Generate our hash value
4605         //
4606
4607         ullHash = AFSGenerateCRC( &uniFullShareName,
4608                                   TRUE);
4609
4610         //
4611         // Loop through our special share names to see if this is one of them
4612         //
4613
4614         pDirectoryCB = AFSSpecialShareNames;
4615
4616         while( pDirectoryCB != NULL)
4617         {
4618
4619             if( ullHash == pDirectoryCB->CaseInsensitiveTreeEntry.HashIndex)
4620             {
4621
4622                 break;
4623             }
4624
4625             pDirectoryCB = (AFSDirectoryCB *)pDirectoryCB->ListEntry.fLink;
4626         }
4627     }
4628
4629     return pDirectoryCB;
4630 }
4631
4632 void
4633 AFSWaitOnQueuedFlushes( IN AFSFcb *Fcb)
4634 {
4635
4636     //
4637     // Block on the queue flush event
4638     //
4639
4640     KeWaitForSingleObject( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
4641                            Executive,
4642                            KernelMode,
4643                            FALSE,
4644                            NULL);
4645
4646     return;
4647 }
4648
4649 void
4650 AFSWaitOnQueuedReleases()
4651 {
4652
4653     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
4654
4655     //
4656     // Block on the queue flush event
4657     //
4658
4659     KeWaitForSingleObject( &pRDRDeviceExt->Specific.RDR.QueuedReleaseExtentEvent,
4660                            Executive,
4661                            KernelMode,
4662                            FALSE,
4663                            NULL);
4664
4665     return;
4666 }
4667
4668 BOOLEAN
4669 AFSIsEqualFID( IN AFSFileID *FileId1,
4670                IN AFSFileID *FileId2)
4671 {
4672
4673     BOOLEAN bIsEqual = FALSE;
4674
4675     if( FileId1->Hash == FileId2->Hash &&
4676         FileId1->Unique == FileId2->Unique &&
4677         FileId1->Vnode == FileId2->Vnode &&
4678         FileId1->Volume == FileId2->Volume &&
4679         FileId1->Cell == FileId2->Cell)
4680     {
4681
4682         bIsEqual = TRUE;
4683     }
4684
4685     return bIsEqual;
4686 }
4687
4688 NTSTATUS
4689 AFSResetDirectoryContent( IN AFSObjectInfoCB *ObjectInfoCB)
4690 {
4691
4692     NTSTATUS ntStatus = STATUS_SUCCESS;
4693     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
4694
4695     __Enter
4696     {
4697
4698         ASSERT( ExIsResourceAcquiredExclusiveLite( ObjectInfoCB->Specific.Directory.DirectoryNodeHdr.TreeLock));
4699
4700         //
4701         // Reset the directory list information
4702         //
4703
4704         pCurrentDirEntry = ObjectInfoCB->Specific.Directory.DirectoryNodeListHead;
4705
4706         while( pCurrentDirEntry != NULL)
4707         {
4708
4709             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
4710
4711             if( pCurrentDirEntry->OpenReferenceCount == 0)
4712             {
4713
4714                 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
4715                               AFS_TRACE_LEVEL_VERBOSE,
4716                               "AFSResetDirectoryContent Deleting dir entry %p for %wZ\n",
4717                               pCurrentDirEntry,
4718                               &pCurrentDirEntry->NameInformation.FileName);
4719
4720                 AFSDeleteDirEntry( ObjectInfoCB,
4721                                    pCurrentDirEntry);
4722             }
4723             else
4724             {
4725
4726                 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
4727                               AFS_TRACE_LEVEL_VERBOSE,
4728                               "AFSResetDirectoryContent Setting DELETE flag in dir entry %p for %wZ\n",
4729                               pCurrentDirEntry,
4730                               &pCurrentDirEntry->NameInformation.FileName);
4731
4732                 SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
4733
4734                 AFSRemoveNameEntry( ObjectInfoCB,
4735                                     pCurrentDirEntry);
4736             }
4737
4738             pCurrentDirEntry = pNextDirEntry;
4739         }
4740
4741         ObjectInfoCB->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
4742
4743         ObjectInfoCB->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
4744
4745         ObjectInfoCB->Specific.Directory.ShortNameTree = NULL;
4746
4747         ObjectInfoCB->Specific.Directory.DirectoryNodeListHead = NULL;
4748
4749         ObjectInfoCB->Specific.Directory.DirectoryNodeListTail = NULL;
4750
4751         ObjectInfoCB->Specific.Directory.DirectoryNodeCount = 0;
4752
4753         AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
4754                       AFS_TRACE_LEVEL_VERBOSE,
4755                       "AFSResetDirectoryContent Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
4756                       ObjectInfoCB->FileId.Cell,
4757                       ObjectInfoCB->FileId.Volume,
4758                       ObjectInfoCB->FileId.Vnode,
4759                       ObjectInfoCB->FileId.Unique);
4760     }
4761
4762     return ntStatus;
4763 }
4764
4765 NTSTATUS
4766 AFSEnumerateGlobalRoot( IN GUID *AuthGroup)
4767 {
4768
4769     NTSTATUS ntStatus = STATUS_SUCCESS;
4770     AFSDirectoryCB *pDirGlobalDirNode = NULL;
4771     UNICODE_STRING uniFullName;
4772
4773     __Enter
4774     {
4775
4776         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
4777                       AFS_TRACE_LEVEL_VERBOSE,
4778                       "AFSEnumerateGlobalRoot Acquiring GlobalRoot DirectoryNodeHdr.TreeLock lock %08lX EXCL %08lX\n",
4779                       AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
4780                       PsGetCurrentThread());
4781
4782         AFSAcquireExcl( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
4783                         TRUE);
4784
4785         if( BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
4786         {
4787
4788             try_return( ntStatus);
4789         }
4790
4791         //
4792         // Initialize the root information
4793         //
4794
4795         AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.ContentIndex = 1;
4796
4797         //
4798         // Enumerate the shares in the volume
4799         //
4800
4801         ntStatus = AFSEnumerateDirectory( AuthGroup,
4802                                           &AFSGlobalRoot->ObjectInformation,
4803                                           TRUE);
4804
4805         if( !NT_SUCCESS( ntStatus))
4806         {
4807
4808             try_return( ntStatus);
4809         }
4810
4811         pDirGlobalDirNode = AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListHead;
4812
4813         //
4814         // Indicate the node is initialized
4815         //
4816
4817         SetFlag( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
4818
4819         uniFullName.MaximumLength = PAGE_SIZE;
4820         uniFullName.Length = 0;
4821
4822         uniFullName.Buffer = (WCHAR *)AFSLibExAllocatePoolWithTag( PagedPool,
4823                                                                    uniFullName.MaximumLength,
4824                                                                    AFS_GENERIC_MEMORY_12_TAG);
4825
4826         if( uniFullName.Buffer == NULL)
4827         {
4828
4829             //
4830             // Reset the directory content
4831             //
4832
4833             AFSResetDirectoryContent( &AFSGlobalRoot->ObjectInformation);
4834
4835             ClearFlag( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
4836
4837             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4838         }
4839
4840         //
4841         // Populate our list of entries in the NP enumeration list
4842         //
4843
4844         while( pDirGlobalDirNode != NULL)
4845         {
4846
4847             uniFullName.Buffer[ 0] = L'\\';
4848             uniFullName.Buffer[ 1] = L'\\';
4849
4850             uniFullName.Length = 2 * sizeof( WCHAR);
4851
4852             RtlCopyMemory( &uniFullName.Buffer[ 2],
4853                            AFSServerName.Buffer,
4854                            AFSServerName.Length);
4855
4856             uniFullName.Length += AFSServerName.Length;
4857
4858             uniFullName.Buffer[ uniFullName.Length/sizeof( WCHAR)] = L'\\';
4859
4860             uniFullName.Length += sizeof( WCHAR);
4861
4862             RtlCopyMemory( &uniFullName.Buffer[ uniFullName.Length/sizeof( WCHAR)],
4863                            pDirGlobalDirNode->NameInformation.FileName.Buffer,
4864                            pDirGlobalDirNode->NameInformation.FileName.Length);
4865
4866             uniFullName.Length += pDirGlobalDirNode->NameInformation.FileName.Length;
4867
4868             AFSAddConnectionEx( &uniFullName,
4869                                 RESOURCEDISPLAYTYPE_SHARE,
4870                                 0);
4871
4872             pDirGlobalDirNode = (AFSDirectoryCB *)pDirGlobalDirNode->ListEntry.fLink;
4873         }
4874
4875         AFSExFreePoolWithTag( uniFullName.Buffer, 0);
4876
4877 try_exit:
4878
4879         AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
4880     }
4881
4882     return ntStatus;
4883 }
4884
4885 BOOLEAN
4886 AFSIsRelativeName( IN UNICODE_STRING *Name)
4887 {
4888
4889     BOOLEAN bIsRelative = FALSE;
4890
4891     if( Name->Buffer[ 0] != L'\\')
4892     {
4893
4894         bIsRelative = TRUE;
4895     }
4896
4897     return bIsRelative;
4898 }
4899
4900 void
4901 AFSUpdateName( IN UNICODE_STRING *Name)
4902 {
4903
4904     USHORT usIndex = 0;
4905
4906     while( usIndex < Name->Length/sizeof( WCHAR))
4907     {
4908
4909         if( Name->Buffer[ usIndex] == L'/')
4910         {
4911
4912             Name->Buffer[ usIndex] = L'\\';
4913         }
4914
4915         usIndex++;
4916     }
4917
4918     return;
4919 }
4920
4921 NTSTATUS
4922 AFSUpdateTargetName( IN OUT UNICODE_STRING *TargetName,
4923                      IN OUT ULONG *Flags,
4924                      IN WCHAR *NameBuffer,
4925                      IN USHORT NameLength)
4926 {
4927
4928     NTSTATUS ntStatus = STATUS_SUCCESS;
4929     WCHAR *pTmpBuffer = NULL;
4930
4931     __Enter
4932     {
4933
4934         //
4935         // If we have enough space then just move in the name otherwise
4936         // allocate a new buffer
4937         //
4938
4939         if( TargetName->Length < NameLength)
4940         {
4941
4942             pTmpBuffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
4943                                                             NameLength,
4944                                                             AFS_NAME_BUFFER_FIVE_TAG);
4945
4946             if( pTmpBuffer == NULL)
4947             {
4948
4949                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4950             }
4951
4952             if( BooleanFlagOn( *Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER))
4953             {
4954
4955                 AFSExFreePoolWithTag( TargetName->Buffer, AFS_NAME_BUFFER_FIVE_TAG);
4956             }
4957
4958             TargetName->MaximumLength = NameLength;
4959
4960             TargetName->Buffer = pTmpBuffer;
4961
4962             SetFlag( *Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER);
4963         }
4964
4965         TargetName->Length = NameLength;
4966
4967         RtlCopyMemory( TargetName->Buffer,
4968                        NameBuffer,
4969                        TargetName->Length);
4970
4971         //
4972         // Update the name in the buffer
4973         //
4974
4975         AFSUpdateName( TargetName);
4976
4977 try_exit:
4978
4979         NOTHING;
4980     }
4981
4982     return ntStatus;
4983 }
4984
4985 AFSNameArrayHdr *
4986 AFSInitNameArray( IN AFSDirectoryCB *DirectoryCB,
4987                   IN ULONG InitialElementCount)
4988 {
4989
4990     AFSNameArrayHdr *pNameArray = NULL;
4991     AFSNameArrayCB *pCurrentElement = NULL;
4992     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
4993     LONG lCount;
4994
4995     __Enter
4996     {
4997
4998         if( InitialElementCount == 0)
4999         {
5000
5001             InitialElementCount = pDevExt->Specific.RDR.NameArrayLength;
5002         }
5003
5004         pNameArray = (AFSNameArrayHdr *)AFSExAllocatePoolWithTag( PagedPool,
5005                                                                   sizeof( AFSNameArrayHdr) +
5006                                                                     (InitialElementCount * sizeof( AFSNameArrayCB)),
5007                                                                   AFS_NAME_ARRAY_TAG);
5008
5009         if( pNameArray == NULL)
5010         {
5011
5012             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5013                           AFS_TRACE_LEVEL_ERROR,
5014                           "AFSInitNameArray Failed to allocate name array\n");
5015
5016             try_return( pNameArray);
5017         }
5018
5019         RtlZeroMemory( pNameArray,
5020                        sizeof( AFSNameArrayHdr) +
5021                           (InitialElementCount * sizeof( AFSNameArrayCB)));
5022
5023         pNameArray->MaxElementCount = InitialElementCount;
5024
5025         if( DirectoryCB != NULL)
5026         {
5027
5028             pCurrentElement = &pNameArray->ElementArray[ 0];
5029
5030             pNameArray->CurrentEntry = pCurrentElement;
5031
5032             pNameArray->Count = 1;
5033
5034             pNameArray->LinkCount = 0;
5035
5036             lCount = InterlockedIncrement( &DirectoryCB->OpenReferenceCount);
5037
5038             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5039                           AFS_TRACE_LEVEL_VERBOSE,
5040                           "AFSInitNameArray Increment count on %wZ DE %p Cnt %d\n",
5041                           &DirectoryCB->NameInformation.FileName,
5042                           DirectoryCB,
5043                           lCount);
5044
5045             pCurrentElement->DirectoryCB = DirectoryCB;
5046
5047             pCurrentElement->Component = DirectoryCB->NameInformation.FileName;
5048
5049             pCurrentElement->FileId = DirectoryCB->ObjectInformation->FileId;
5050
5051             if( pCurrentElement->FileId.Vnode == 1)
5052             {
5053
5054                 SetFlag( pCurrentElement->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT);
5055             }
5056
5057             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5058                           AFS_TRACE_LEVEL_VERBOSE,
5059                           "AFSInitNameArray [NA:%p] Element[0] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5060                           pNameArray,
5061                           pCurrentElement->DirectoryCB,
5062                           pCurrentElement->FileId.Cell,
5063                           pCurrentElement->FileId.Volume,
5064                           pCurrentElement->FileId.Vnode,
5065                           pCurrentElement->FileId.Unique,
5066                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5067                           pCurrentElement->DirectoryCB->ObjectInformation->FileType);
5068         }
5069
5070 try_exit:
5071
5072         NOTHING;
5073     }
5074
5075     return pNameArray;
5076 }
5077
5078 NTSTATUS
5079 AFSPopulateNameArray( IN AFSNameArrayHdr *NameArray,
5080                       IN UNICODE_STRING *Path,
5081                       IN AFSDirectoryCB *DirectoryCB)
5082 {
5083
5084     NTSTATUS ntStatus = STATUS_SUCCESS;
5085     AFSNameArrayCB *pCurrentElement = NULL;
5086     UNICODE_STRING uniComponentName, uniRemainingPath;
5087     AFSObjectInfoCB *pCurrentObject = NULL;
5088     ULONG  ulTotalCount = 0;
5089     ULONG ulIndex = 0;
5090     USHORT usLength = 0;
5091     LONG lCount;
5092
5093     __Enter
5094     {
5095
5096         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5097                       AFS_TRACE_LEVEL_VERBOSE,
5098                       "AFSPopulateNameArray [NA:%p] passed Path %wZ DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5099                       NameArray,
5100                       &Path,
5101                       DirectoryCB,
5102                       DirectoryCB->ObjectInformation->FileId.Cell,
5103                       DirectoryCB->ObjectInformation->FileId.Volume,
5104                       DirectoryCB->ObjectInformation->FileId.Vnode,
5105                       DirectoryCB->ObjectInformation->FileId.Unique,
5106                       &DirectoryCB->NameInformation.FileName,
5107                       DirectoryCB->ObjectInformation->FileType);
5108
5109         //
5110         // Init some info in the header
5111         //
5112
5113         pCurrentElement = &NameArray->ElementArray[ 0];
5114
5115         NameArray->CurrentEntry = pCurrentElement;
5116
5117         //
5118         // The first entry points at the root
5119         //
5120
5121         pCurrentElement->DirectoryCB = DirectoryCB->ObjectInformation->VolumeCB->DirectoryCB;
5122
5123         lCount = InterlockedIncrement( &pCurrentElement->DirectoryCB->OpenReferenceCount);
5124
5125         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5126                       AFS_TRACE_LEVEL_VERBOSE,
5127                       "AFSPopulateNameArray Increment count on volume %wZ DE %p Cnt %d\n",
5128                       &pCurrentElement->DirectoryCB->NameInformation.FileName,
5129                       pCurrentElement->DirectoryCB,
5130                       lCount);
5131
5132         pCurrentElement->Component = DirectoryCB->ObjectInformation->VolumeCB->DirectoryCB->NameInformation.FileName;
5133
5134         pCurrentElement->FileId = DirectoryCB->ObjectInformation->VolumeCB->ObjectInformation.FileId;
5135
5136         pCurrentElement->Flags = 0;
5137
5138         if( pCurrentElement->FileId.Vnode == 1)
5139         {
5140
5141             SetFlag( pCurrentElement->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT);
5142         }
5143
5144         NameArray->Count = 1;
5145
5146         NameArray->LinkCount = 0;
5147
5148         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5149                       AFS_TRACE_LEVEL_VERBOSE,
5150                       "AFSPopulateNameArray [NA:%p] Element[0] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5151                       NameArray,
5152                       pCurrentElement->DirectoryCB,
5153                       pCurrentElement->FileId.Cell,
5154                       pCurrentElement->FileId.Volume,
5155                       pCurrentElement->FileId.Vnode,
5156                       pCurrentElement->FileId.Unique,
5157                       &pCurrentElement->DirectoryCB->NameInformation.FileName,
5158                       pCurrentElement->DirectoryCB->ObjectInformation->FileType);
5159
5160         //
5161         // If the root is the parent then we are done ...
5162         //
5163
5164         if( &DirectoryCB->ObjectInformation->VolumeCB->ObjectInformation == DirectoryCB->ObjectInformation)
5165         {
5166             try_return( ntStatus);
5167         }
5168
5169 try_exit:
5170
5171         NOTHING;
5172     }
5173
5174     return ntStatus;
5175 }
5176
5177 NTSTATUS
5178 AFSPopulateNameArrayFromRelatedArray( IN AFSNameArrayHdr *NameArray,
5179                                       IN AFSNameArrayHdr *RelatedNameArray,
5180                                       IN AFSDirectoryCB *DirectoryCB)
5181 {
5182
5183     NTSTATUS ntStatus = STATUS_SUCCESS;
5184     AFSNameArrayCB *pCurrentElement = NULL, *pCurrentRelatedElement = NULL;
5185     UNICODE_STRING uniComponentName, uniRemainingPath;
5186     AFSObjectInfoCB *pObjectInfo = NULL;
5187     ULONG  ulTotalCount = 0;
5188     ULONG ulIndex = 0;
5189     USHORT usLength = 0;
5190     LONG lCount;
5191
5192     __Enter
5193     {
5194
5195         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5196                       AFS_TRACE_LEVEL_VERBOSE,
5197                       "AFSPopulateNameArray [NA:%p] passed RelatedNameArray %p DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5198                       NameArray,
5199                       RelatedNameArray,
5200                       DirectoryCB,
5201                       DirectoryCB->ObjectInformation->FileId.Cell,
5202                       DirectoryCB->ObjectInformation->FileId.Volume,
5203                       DirectoryCB->ObjectInformation->FileId.Vnode,
5204                       DirectoryCB->ObjectInformation->FileId.Unique,
5205                       &DirectoryCB->NameInformation.FileName,
5206                       DirectoryCB->ObjectInformation->FileType);
5207
5208         //
5209         // Init some info in the header
5210         //
5211
5212         pCurrentElement = &NameArray->ElementArray[ 0];
5213
5214         pCurrentRelatedElement = &RelatedNameArray->ElementArray[ 0];
5215
5216         NameArray->Count = 0;
5217
5218         NameArray->LinkCount = RelatedNameArray->LinkCount;
5219
5220         //
5221         // Populate the name array with the data from the related array
5222         //
5223
5224         while( TRUE)
5225         {
5226
5227             pCurrentElement->DirectoryCB = pCurrentRelatedElement->DirectoryCB;
5228
5229             pCurrentElement->Component = pCurrentRelatedElement->DirectoryCB->NameInformation.FileName;
5230
5231             pCurrentElement->FileId    = pCurrentElement->DirectoryCB->ObjectInformation->FileId;
5232
5233             pCurrentElement->Flags = 0;
5234
5235             if( pCurrentElement->FileId.Vnode == 1)
5236             {
5237
5238                 SetFlag( pCurrentElement->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT);
5239             }
5240
5241             lCount = InterlockedIncrement( &pCurrentElement->DirectoryCB->OpenReferenceCount);
5242
5243             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5244                           AFS_TRACE_LEVEL_VERBOSE,
5245                           "AFSPopulateNameArrayFromRelatedArray Increment count on %wZ DE %p Cnt %d\n",
5246                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5247                           pCurrentElement->DirectoryCB,
5248                           lCount);
5249
5250             lCount = InterlockedIncrement( &NameArray->Count);
5251
5252             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5253                           AFS_TRACE_LEVEL_VERBOSE,
5254                           "AFSPopulateNameArrayFromRelatedArray [NA:%p] Element[%d] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5255                           NameArray,
5256                           lCount - 1,
5257                           pCurrentElement->DirectoryCB,
5258                           pCurrentElement->FileId.Cell,
5259                           pCurrentElement->FileId.Volume,
5260                           pCurrentElement->FileId.Vnode,
5261                           pCurrentElement->FileId.Unique,
5262                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5263                           pCurrentElement->DirectoryCB->ObjectInformation->FileType);
5264
5265             if( pCurrentElement->DirectoryCB == DirectoryCB ||
5266                 NameArray->Count == RelatedNameArray->Count)
5267             {
5268
5269                 //
5270                 // Done ...
5271                 //
5272
5273                 break;
5274             }
5275
5276             pCurrentElement++;
5277
5278             pCurrentRelatedElement++;
5279         }
5280
5281         NameArray->CurrentEntry = NameArray->Count > 0 ? pCurrentElement : NULL;
5282     }
5283
5284     return ntStatus;
5285 }
5286
5287 NTSTATUS
5288 AFSFreeNameArray( IN AFSNameArrayHdr *NameArray)
5289 {
5290
5291     NTSTATUS ntStatus = STATUS_SUCCESS;
5292     AFSNameArrayCB *pCurrentElement = NULL;
5293     LONG lCount, lElement;
5294
5295     __Enter
5296     {
5297
5298         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5299                       AFS_TRACE_LEVEL_VERBOSE,
5300                       "AFSFreeNameArray [NA:%p]\n",
5301                       NameArray);
5302
5303         for ( lElement = 0; lElement < NameArray->Count; lElement++)
5304         {
5305
5306             pCurrentElement = &NameArray->ElementArray[ lElement];
5307
5308             lCount = InterlockedDecrement( &pCurrentElement->DirectoryCB->OpenReferenceCount);
5309
5310             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5311                           AFS_TRACE_LEVEL_VERBOSE,
5312                           "AFSFreeNameArray Decrement count on %wZ DE %p Cnt %d\n",
5313                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5314                           pCurrentElement->DirectoryCB,
5315                           lCount);
5316         }
5317
5318         AFSExFreePoolWithTag( NameArray, AFS_NAME_ARRAY_TAG);
5319     }
5320
5321     return ntStatus;
5322 }
5323
5324 NTSTATUS
5325 AFSInsertNextElement( IN AFSNameArrayHdr *NameArray,
5326                       IN AFSDirectoryCB *DirectoryCB)
5327 {
5328
5329     NTSTATUS ntStatus = STATUS_SUCCESS;
5330     AFSNameArrayCB *pCurrentElement = NULL;
5331     LONG lCount;
5332
5333     __Enter
5334     {
5335
5336         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5337                       AFS_TRACE_LEVEL_VERBOSE,
5338                       "AFSInsertNextElement [NA:%p] passed DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5339                       NameArray,
5340                       DirectoryCB,
5341                       DirectoryCB->ObjectInformation->FileId.Cell,
5342                       DirectoryCB->ObjectInformation->FileId.Volume,
5343                       DirectoryCB->ObjectInformation->FileId.Vnode,
5344                       DirectoryCB->ObjectInformation->FileId.Unique,
5345                       &DirectoryCB->NameInformation.FileName,
5346                       DirectoryCB->ObjectInformation->FileType);
5347
5348         if( NameArray->Count == NameArray->MaxElementCount)
5349         {
5350
5351             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5352                           AFS_TRACE_LEVEL_ERROR,
5353                           "AFSInsertNextElement [NA:%p] Name has reached Maximum Size\n",
5354                           NameArray);
5355
5356             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5357         }
5358
5359         for ( lCount = 0; lCount < NameArray->Count; lCount++)
5360         {
5361
5362             if ( AFSIsEqualFID( &NameArray->ElementArray[ lCount].FileId,
5363                                 &DirectoryCB->ObjectInformation->FileId) )
5364             {
5365
5366                 AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5367                               AFS_TRACE_LEVEL_WARNING,
5368                               "AFSInsertNextElement [NA:%p] DE %p recursion Status %08X\n",
5369                               NameArray,
5370                               DirectoryCB,
5371                               STATUS_ACCESS_DENIED);
5372
5373                 try_return( ntStatus = STATUS_ACCESS_DENIED);
5374             }
5375         }
5376
5377         if( NameArray->Count > 0)
5378         {
5379
5380             NameArray->CurrentEntry++;
5381         }
5382         else
5383         {
5384             NameArray->CurrentEntry = &NameArray->ElementArray[ 0];
5385         }
5386
5387         pCurrentElement = NameArray->CurrentEntry;
5388
5389         lCount = InterlockedIncrement( &NameArray->Count);
5390
5391         lCount = InterlockedIncrement( &DirectoryCB->OpenReferenceCount);
5392
5393         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5394                       AFS_TRACE_LEVEL_VERBOSE,
5395                       "AFSInsertNextElement Increment count on %wZ DE %p Cnt %d\n",
5396                       &DirectoryCB->NameInformation.FileName,
5397                       DirectoryCB,
5398                       lCount);
5399
5400         pCurrentElement->DirectoryCB = DirectoryCB;
5401
5402         pCurrentElement->Component = DirectoryCB->NameInformation.FileName;
5403
5404         pCurrentElement->FileId = DirectoryCB->ObjectInformation->FileId;
5405
5406         pCurrentElement->Flags = 0;
5407
5408         if( pCurrentElement->FileId.Vnode == 1)
5409         {
5410
5411             SetFlag( pCurrentElement->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT);
5412         }
5413
5414         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5415                       AFS_TRACE_LEVEL_VERBOSE,
5416                       "AFSInsertNextElement [NA:%p] Element[%d] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5417                       NameArray,
5418                       NameArray->Count - 1,
5419                       pCurrentElement->DirectoryCB,
5420                       pCurrentElement->FileId.Cell,
5421                       pCurrentElement->FileId.Volume,
5422                       pCurrentElement->FileId.Vnode,
5423                       pCurrentElement->FileId.Unique,
5424                       &pCurrentElement->DirectoryCB->NameInformation.FileName,
5425                       pCurrentElement->DirectoryCB->ObjectInformation->FileType);
5426
5427 try_exit:
5428
5429         NOTHING;
5430     }
5431
5432     return ntStatus;
5433 }
5434
5435 AFSDirectoryCB *
5436 AFSBackupEntry( IN AFSNameArrayHdr *NameArray)
5437 {
5438
5439     AFSDirectoryCB *pDirectoryCB = NULL;
5440     AFSNameArrayCB *pCurrentElement = NULL;
5441     BOOLEAN         bVolumeRoot = FALSE;
5442     LONG lCount;
5443
5444     __Enter
5445     {
5446
5447         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5448                       AFS_TRACE_LEVEL_VERBOSE,
5449                       "AFSBackupEntry [NA:%p]\n",
5450                       NameArray);
5451
5452         if( NameArray->Count == 0)
5453         {
5454
5455             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5456                           AFS_TRACE_LEVEL_ERROR,
5457                           "AFSBackupEntry [NA:%p] No more entries\n",
5458                           NameArray);
5459
5460             try_return( pCurrentElement);
5461         }
5462
5463         lCount = InterlockedDecrement( &NameArray->CurrentEntry->DirectoryCB->OpenReferenceCount);
5464
5465         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5466                       AFS_TRACE_LEVEL_VERBOSE,
5467                       "AFSBackupEntry Decrement count on %wZ DE %p Cnt %d\n",
5468                       &NameArray->CurrentEntry->DirectoryCB->NameInformation.FileName,
5469                       NameArray->CurrentEntry->DirectoryCB,
5470                       lCount);
5471
5472         NameArray->CurrentEntry->DirectoryCB = NULL;
5473
5474         lCount = InterlockedDecrement( &NameArray->Count);
5475
5476         if( lCount == 0)
5477         {
5478             NameArray->CurrentEntry = NULL;
5479
5480             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5481                           AFS_TRACE_LEVEL_ERROR,
5482                           "AFSBackupEntry [NA:%p] No more entries\n",
5483                           NameArray);
5484         }
5485         else
5486         {
5487
5488             bVolumeRoot = BooleanFlagOn( NameArray->CurrentEntry->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT);
5489
5490             NameArray->CurrentEntry--;
5491
5492             pCurrentElement = NameArray->CurrentEntry;
5493
5494             pDirectoryCB = pCurrentElement->DirectoryCB;
5495
5496             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5497                           AFS_TRACE_LEVEL_VERBOSE,
5498                           "AFSBackupEntry [NA:%p] Returning Element[%d] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5499                           NameArray,
5500                           NameArray->Count - 1,
5501                           pCurrentElement->DirectoryCB,
5502                           pCurrentElement->FileId.Cell,
5503                           pCurrentElement->FileId.Volume,
5504                           pCurrentElement->FileId.Vnode,
5505                           pCurrentElement->FileId.Unique,
5506                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5507                           pCurrentElement->DirectoryCB->ObjectInformation->FileType);
5508
5509             //
5510             // If the entry we are removing is a volume root,
5511             // we must remove the mount point entry as well.
5512             // If the NameArray was constructed by checking the
5513             // share name via the service, the name array can
5514             // contain two volume roots in sequence without a
5515             // mount point separating them.
5516             //
5517
5518             if ( bVolumeRoot &&
5519                  !BooleanFlagOn( NameArray->CurrentEntry->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT))
5520             {
5521
5522                 pDirectoryCB = AFSBackupEntry( NameArray);
5523             }
5524         }
5525
5526
5527 try_exit:
5528
5529         NOTHING;
5530     }
5531
5532     return pDirectoryCB;
5533 }
5534
5535 AFSDirectoryCB *
5536 AFSGetParentEntry( IN AFSNameArrayHdr *NameArray)
5537 {
5538
5539     AFSDirectoryCB *pDirEntry = NULL;
5540     AFSNameArrayCB *pElement = NULL;
5541
5542     __Enter
5543     {
5544
5545         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5546                       AFS_TRACE_LEVEL_VERBOSE,
5547                       "AFSGetParentEntry [NA:%p]\n",
5548                       NameArray);
5549
5550         if( NameArray->Count == 0 ||
5551             NameArray->Count == 1)
5552         {
5553
5554             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5555                           AFS_TRACE_LEVEL_ERROR,
5556                           "AFSGetParentEntry [NA:%p] No more entries\n",
5557                           NameArray);
5558
5559             try_return( pDirEntry = NULL);
5560         }
5561
5562         pElement = &NameArray->ElementArray[ NameArray->Count - 2];
5563
5564         pDirEntry = pElement->DirectoryCB;
5565
5566         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5567                       AFS_TRACE_LEVEL_VERBOSE,
5568                       "AFSGetParentEntry [NA:%p] Returning Element[%d] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5569                       NameArray,
5570                       NameArray->Count - 2,
5571                       pElement->DirectoryCB,
5572                       pElement->FileId.Cell,
5573                       pElement->FileId.Volume,
5574                       pElement->FileId.Vnode,
5575                       pElement->FileId.Unique,
5576                       &pElement->DirectoryCB->NameInformation.FileName,
5577                       pElement->DirectoryCB->ObjectInformation->FileType);
5578
5579 try_exit:
5580
5581         NOTHING;
5582     }
5583
5584     return pDirEntry;
5585 }
5586
5587 void
5588 AFSResetNameArray( IN AFSNameArrayHdr *NameArray,
5589                    IN AFSDirectoryCB *DirectoryCB)
5590 {
5591
5592     AFSNameArrayCB *pCurrentElement = NULL;
5593     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
5594     LONG lCount, lElement;
5595
5596     __Enter
5597     {
5598
5599         AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5600                       AFS_TRACE_LEVEL_VERBOSE,
5601                       "AFSResetNameArray [NA:%p] passed DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5602                       NameArray,
5603                       DirectoryCB,
5604                       DirectoryCB->ObjectInformation->FileId.Cell,
5605                       DirectoryCB->ObjectInformation->FileId.Volume,
5606                       DirectoryCB->ObjectInformation->FileId.Vnode,
5607                       DirectoryCB->ObjectInformation->FileId.Unique,
5608                       &DirectoryCB->NameInformation.FileName,
5609                       DirectoryCB->ObjectInformation->FileType);
5610         //
5611         // Dereference previous name array contents
5612         //
5613
5614         for ( lElement = 0; lElement < NameArray->Count; lElement++)
5615         {
5616
5617             pCurrentElement = &NameArray->ElementArray[ lElement];
5618
5619             lCount = InterlockedDecrement( &pCurrentElement->DirectoryCB->OpenReferenceCount);
5620
5621             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5622                           AFS_TRACE_LEVEL_VERBOSE,
5623                           "AFSResetNameArray Decrement count on %wZ DE %p Cnt %d\n",
5624                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5625                           pCurrentElement->DirectoryCB,
5626                           lCount);
5627         }
5628
5629         RtlZeroMemory( NameArray,
5630                        sizeof( AFSNameArrayHdr) +
5631                           ((pDevExt->Specific.RDR.NameArrayLength - 1) * sizeof( AFSNameArrayCB)));
5632
5633         NameArray->MaxElementCount = pDevExt->Specific.RDR.NameArrayLength;
5634
5635         if( DirectoryCB != NULL)
5636         {
5637
5638             pCurrentElement = &NameArray->ElementArray[ 0];
5639
5640             NameArray->CurrentEntry = pCurrentElement;
5641
5642             NameArray->Count = 1;
5643
5644             NameArray->LinkCount = 0;
5645
5646             lCount = InterlockedIncrement( &DirectoryCB->OpenReferenceCount);
5647
5648             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
5649                           AFS_TRACE_LEVEL_VERBOSE,
5650                           "AFSResetNameArray Increment count on %wZ DE %p Cnt %d\n",
5651                           &DirectoryCB->NameInformation.FileName,
5652                           DirectoryCB,
5653                           lCount);
5654
5655             pCurrentElement->DirectoryCB = DirectoryCB;
5656
5657             pCurrentElement->Component = DirectoryCB->NameInformation.FileName;
5658
5659             pCurrentElement->FileId = DirectoryCB->ObjectInformation->FileId;
5660
5661             pCurrentElement->Flags  = 0;
5662
5663             if( pCurrentElement->FileId.Vnode == 1)
5664             {
5665
5666                 SetFlag( pCurrentElement->Flags, AFS_NAME_ARRAY_FLAG_ROOT_ELEMENT);
5667             }
5668
5669             AFSDbgLogMsg( AFS_SUBSYSTEM_NAME_ARRAY_PROCESSING,
5670                           AFS_TRACE_LEVEL_VERBOSE,
5671                           "AFSResetNameArray [NA:%p] Element[0] DE %p FID %08lX-%08lX-%08lX-%08lX %wZ Type %d\n",
5672                           NameArray,
5673                           pCurrentElement->DirectoryCB,
5674                           pCurrentElement->FileId.Cell,
5675                           pCurrentElement->FileId.Volume,
5676                           pCurrentElement->FileId.Vnode,
5677                           pCurrentElement->FileId.Unique,
5678                           &pCurrentElement->DirectoryCB->NameInformation.FileName,
5679                           pCurrentElement->DirectoryCB->ObjectInformation->FileType);
5680         }
5681     }
5682
5683     return;
5684 }
5685
5686 void
5687 AFSDumpNameArray( IN AFSNameArrayHdr *NameArray)
5688 {
5689
5690     AFSNameArrayCB *pCurrentElement = NULL;
5691
5692     pCurrentElement = &NameArray->ElementArray[ 0];
5693
5694     AFSPrint("AFSDumpNameArray Start (%d)\n", NameArray->Count);
5695
5696     while( pCurrentElement->DirectoryCB != NULL)
5697     {
5698
5699         AFSPrint("FID %08lX-%08lX-%08lX-%08lX %wZ\n",
5700                   pCurrentElement->FileId.Cell,
5701                   pCurrentElement->FileId.Volume,
5702                   pCurrentElement->FileId.Vnode,
5703                   pCurrentElement->FileId.Unique,
5704                   &pCurrentElement->DirectoryCB->NameInformation.FileName);
5705
5706         pCurrentElement++;
5707     }
5708
5709     AFSPrint("AFSDumpNameArray End\n\n");
5710
5711     return;
5712 }
5713
5714 void
5715 AFSSetEnumerationEvent( IN AFSFcb *Fcb)
5716 {
5717     LONG lCount;
5718
5719     //
5720     // Depending on the type of node, set the event
5721     //
5722
5723     switch( Fcb->Header.NodeTypeCode)
5724     {
5725
5726         case AFS_DIRECTORY_FCB:
5727         case AFS_ROOT_FCB:
5728         case AFS_ROOT_ALL:
5729         {
5730
5731             lCount = InterlockedIncrement( &Fcb->NPFcb->Specific.Directory.DirectoryEnumCount);
5732
5733             break;
5734         }
5735     }
5736
5737     return;
5738 }
5739
5740 void
5741 AFSClearEnumerationEvent( IN AFSFcb *Fcb)
5742 {
5743
5744     LONG lCount;
5745
5746     //
5747     // Depending on the type of node, set the event
5748     //
5749
5750     switch( Fcb->Header.NodeTypeCode)
5751     {
5752
5753         case AFS_DIRECTORY_FCB:
5754         case AFS_ROOT_FCB:
5755         case AFS_ROOT_ALL:
5756         {
5757
5758             ASSERT( Fcb->NPFcb->Specific.Directory.DirectoryEnumCount > 0);
5759
5760             lCount = InterlockedDecrement( &Fcb->NPFcb->Specific.Directory.DirectoryEnumCount);
5761
5762             break;
5763         }
5764     }
5765
5766     return;
5767 }
5768
5769 BOOLEAN
5770 AFSIsEnumerationInProcess( IN AFSObjectInfoCB *ObjectInfo)
5771 {
5772
5773     BOOLEAN bIsInProcess = FALSE;
5774
5775     __Enter
5776     {
5777
5778         if( ObjectInfo->Fcb == NULL)
5779         {
5780
5781             try_return( bIsInProcess);
5782         }
5783
5784         switch( ObjectInfo->Fcb->Header.NodeTypeCode)
5785         {
5786
5787             case AFS_DIRECTORY_FCB:
5788             case AFS_ROOT_FCB:
5789             case AFS_ROOT_ALL:
5790             {
5791
5792                 if( ObjectInfo->Fcb->NPFcb->Specific.Directory.DirectoryEnumCount > 0)
5793                 {
5794
5795                     bIsInProcess = TRUE;
5796                 }
5797
5798                 break;
5799             }
5800         }
5801
5802 try_exit:
5803
5804         NOTHING;
5805     }
5806
5807     return bIsInProcess;
5808 }
5809
5810 NTSTATUS
5811 AFSVerifyVolume( IN ULONGLONG ProcessId,
5812                  IN AFSVolumeCB *VolumeCB)
5813 {
5814
5815     NTSTATUS ntStatus = STATUS_SUCCESS;
5816
5817
5818     return ntStatus;
5819 }
5820
5821 NTSTATUS
5822 AFSInitPIOCtlDirectoryCB( IN AFSObjectInfoCB *ObjectInfo)
5823 {
5824
5825     NTSTATUS ntStatus = STATUS_SUCCESS;
5826     AFSObjectInfoCB *pObjectInfoCB = NULL;
5827     AFSDirectoryCB *pDirNode = NULL;
5828     ULONG ulEntryLength = 0;
5829     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
5830     LONG lCount;
5831
5832     __Enter
5833     {
5834
5835         pObjectInfoCB = AFSAllocateObjectInfo( ObjectInfo,
5836                                                0);
5837
5838         if( pObjectInfoCB == NULL)
5839         {
5840
5841             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5842         }
5843
5844         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
5845                       AFS_TRACE_LEVEL_VERBOSE,
5846                       "AFSInitPIOCtlDirectoryCB Initializing count (1) on object %08lX\n",
5847                       pObjectInfoCB);
5848
5849         pObjectInfoCB->ObjectReferenceCount = 1;
5850
5851         pObjectInfoCB->FileType = AFS_FILE_TYPE_PIOCTL;
5852
5853         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM;
5854
5855         ulEntryLength = sizeof( AFSDirectoryCB) + AFSPIOCtlName.Length;
5856
5857         pDirNode = (AFSDirectoryCB *)AFSExAllocatePoolWithTag( PagedPool,
5858                                                                ulEntryLength,
5859                                                                AFS_DIR_ENTRY_TAG);
5860
5861         if( pDirNode == NULL)
5862         {
5863
5864             AFSDeleteObjectInfo( pObjectInfoCB);
5865
5866             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5867         }
5868
5869         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSExAllocatePoolWithTag( NonPagedPool,
5870                                                                                 sizeof( AFSNonPagedDirectoryCB),
5871                                                                                 AFS_DIR_ENTRY_NP_TAG);
5872
5873         if( pNonPagedDirEntry == NULL)
5874         {
5875
5876             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
5877         }
5878
5879         RtlZeroMemory( pDirNode,
5880                        ulEntryLength);
5881
5882         RtlZeroMemory( pNonPagedDirEntry,
5883                        sizeof( AFSNonPagedDirectoryCB));
5884
5885         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
5886
5887         pDirNode->NonPaged = pNonPagedDirEntry;
5888
5889         pDirNode->ObjectInformation = pObjectInfoCB;
5890
5891         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_PIOCTL_INDEX;
5892
5893         //
5894         // Set valid entry
5895         //
5896
5897         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_FAKE);
5898
5899         pDirNode->NameInformation.FileName.Length = AFSPIOCtlName.Length;
5900
5901         pDirNode->NameInformation.FileName.MaximumLength = AFSPIOCtlName.Length;
5902
5903         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
5904
5905         RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
5906                        AFSPIOCtlName.Buffer,
5907                        pDirNode->NameInformation.FileName.Length);
5908
5909         pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
5910                                                                        TRUE);
5911
5912         if ( InterlockedCompareExchangePointer( (PVOID *)&ObjectInfo->Specific.Directory.PIOCtlDirectoryCB, pDirNode, NULL) != NULL)
5913         {
5914
5915             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
5916                           AFS_TRACE_LEVEL_WARNING,
5917                           "AFSInitPIOCtlDirectoryCB Raced PIOCtlDirectoryCB %08lX pFcb %08lX\n",
5918                           ObjectInfo->Specific.Directory.PIOCtlDirectoryCB,
5919                           pDirNode);
5920
5921             //
5922             // Increment the open reference and handle on the node
5923             //
5924
5925             lCount = InterlockedIncrement( &pDirNode->ObjectInformation->ObjectReferenceCount);
5926
5927             AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
5928                           AFS_TRACE_LEVEL_VERBOSE,
5929                           "AFSInitPIOCtlDirectoryCB Increment count on Object %08lX Cnt %d\n",
5930                           pDirNode->ObjectInformation,
5931                           lCount);
5932
5933             try_return( ntStatus = STATUS_REPARSE);
5934         }
5935
5936 try_exit:
5937
5938         if ( ntStatus != STATUS_SUCCESS)
5939         {
5940
5941             if ( pDirNode != NULL)
5942             {
5943
5944                 AFSExFreePoolWithTag( pDirNode, AFS_DIR_ENTRY_TAG);
5945             }
5946
5947             if( pNonPagedDirEntry != NULL)
5948             {
5949
5950                 ExDeleteResourceLite( &pNonPagedDirEntry->Lock);
5951
5952                 AFSExFreePoolWithTag( pNonPagedDirEntry, AFS_DIR_ENTRY_NP_TAG);
5953             }
5954
5955             if ( pObjectInfoCB != NULL)
5956             {
5957
5958                 AFSDeleteObjectInfo( pObjectInfoCB);
5959             }
5960         }
5961     }
5962
5963     return ntStatus;
5964 }
5965
5966 NTSTATUS
5967 AFSRetrieveFileAttributes( IN AFSDirectoryCB *ParentDirectoryCB,
5968                            IN AFSDirectoryCB *DirectoryCB,
5969                            IN UNICODE_STRING *ParentPathName,
5970                            IN AFSNameArrayHdr *RelatedNameArray,
5971                            IN GUID           *AuthGroup,
5972                            OUT AFSFileInfoCB *FileInfo)
5973 {
5974
5975     NTSTATUS ntStatus = STATUS_SUCCESS;
5976     AFSDirEnumEntry *pDirEntry = NULL, *pLastDirEntry = NULL;
5977     UNICODE_STRING uniFullPathName;
5978     AFSNameArrayHdr    *pNameArray = NULL;
5979     AFSVolumeCB *pVolumeCB = NULL;
5980     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
5981     WCHAR *pwchBuffer = NULL;
5982     UNICODE_STRING uniComponentName, uniRemainingPath, uniParsedName;
5983     ULONG ulNameDifference = 0;
5984     LONG lCount;
5985
5986     __Enter
5987     {
5988
5989         //
5990         // Retrieve a target name for the entry
5991         //
5992
5993         AFSAcquireShared( &DirectoryCB->NonPaged->Lock,
5994                           TRUE);
5995
5996         if( DirectoryCB->NameInformation.TargetName.Length == 0)
5997         {
5998
5999             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6000
6001             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
6002                                               AuthGroup,
6003                                               FALSE,
6004                                               &pDirEntry);
6005
6006             if( !NT_SUCCESS( ntStatus) ||
6007                 pDirEntry->TargetNameLength == 0)
6008             {
6009
6010                 if( pDirEntry != NULL)
6011                 {
6012
6013                     ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
6014                 }
6015
6016                 try_return( ntStatus);
6017             }
6018
6019             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
6020                             TRUE);
6021
6022             if( DirectoryCB->NameInformation.TargetName.Length == 0)
6023             {
6024
6025                 //
6026                 // Update the target name
6027                 //
6028
6029                 ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
6030                                                 &DirectoryCB->Flags,
6031                                                 (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
6032                                                 (USHORT)pDirEntry->TargetNameLength);
6033
6034                 if( !NT_SUCCESS( ntStatus))
6035                 {
6036
6037                     AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6038
6039                     try_return( ntStatus);
6040                 }
6041             }
6042
6043             AFSConvertToShared( &DirectoryCB->NonPaged->Lock);
6044         }
6045
6046         //
6047         // Need to pass the full path in for parsing.
6048         //
6049
6050         if( AFSIsRelativeName( &DirectoryCB->NameInformation.TargetName))
6051         {
6052
6053             uniFullPathName.Length = 0;
6054             uniFullPathName.MaximumLength = ParentPathName->Length +
6055                                                     sizeof( WCHAR) +
6056                                                     DirectoryCB->NameInformation.TargetName.Length;
6057
6058             uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
6059                                                                         uniFullPathName.MaximumLength,
6060                                                                         AFS_NAME_BUFFER_SIX_TAG);
6061
6062             if( uniFullPathName.Buffer == NULL)
6063             {
6064
6065                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6066
6067                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6068             }
6069
6070             pwchBuffer = uniFullPathName.Buffer;
6071
6072             RtlZeroMemory( uniFullPathName.Buffer,
6073                            uniFullPathName.MaximumLength);
6074
6075             RtlCopyMemory( uniFullPathName.Buffer,
6076                            ParentPathName->Buffer,
6077                            ParentPathName->Length);
6078
6079             uniFullPathName.Length = ParentPathName->Length;
6080
6081             if( uniFullPathName.Buffer[ (uniFullPathName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
6082                 DirectoryCB->NameInformation.TargetName.Buffer[ 0] != L'\\')
6083             {
6084
6085                 uniFullPathName.Buffer[ uniFullPathName.Length/sizeof( WCHAR)] = L'\\';
6086
6087                 uniFullPathName.Length += sizeof( WCHAR);
6088             }
6089
6090             RtlCopyMemory( &uniFullPathName.Buffer[ uniFullPathName.Length/sizeof( WCHAR)],
6091                            DirectoryCB->NameInformation.TargetName.Buffer,
6092                            DirectoryCB->NameInformation.TargetName.Length);
6093
6094             uniFullPathName.Length += DirectoryCB->NameInformation.TargetName.Length;
6095
6096             uniParsedName.Length = uniFullPathName.Length - ParentPathName->Length;
6097             uniParsedName.MaximumLength = uniParsedName.Length;
6098
6099             uniParsedName.Buffer = &uniFullPathName.Buffer[ ParentPathName->Length/sizeof( WCHAR)];
6100
6101             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6102
6103             //
6104             // We populate up to the current parent
6105             //
6106
6107             if( RelatedNameArray != NULL)
6108             {
6109
6110                 pNameArray = AFSInitNameArray( NULL,
6111                                                RelatedNameArray->MaxElementCount);
6112
6113                 if( pNameArray == NULL)
6114                 {
6115
6116                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6117                 }
6118
6119                 ntStatus = AFSPopulateNameArrayFromRelatedArray( pNameArray,
6120                                                                  RelatedNameArray,
6121                                                                  ParentDirectoryCB);
6122             }
6123             else
6124             {
6125
6126                 pNameArray = AFSInitNameArray( NULL,
6127                                                0);
6128
6129                 if( pNameArray == NULL)
6130                 {
6131
6132                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6133                 }
6134
6135                 ntStatus = AFSPopulateNameArray( pNameArray,
6136                                                  NULL,
6137                                                  ParentDirectoryCB);
6138             }
6139
6140             if( !NT_SUCCESS( ntStatus))
6141             {
6142
6143                 try_return( ntStatus);
6144             }
6145
6146             pVolumeCB = ParentDirectoryCB->ObjectInformation->VolumeCB;
6147
6148             pParentDirEntry = ParentDirectoryCB;
6149         }
6150         else
6151         {
6152
6153             uniFullPathName.Length = 0;
6154             uniFullPathName.MaximumLength = DirectoryCB->NameInformation.TargetName.Length;
6155
6156             uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
6157                                                                         uniFullPathName.MaximumLength,
6158                                                                         AFS_NAME_BUFFER_SEVEN_TAG);
6159
6160             if( uniFullPathName.Buffer == NULL)
6161             {
6162
6163                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6164
6165                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6166             }
6167
6168             pwchBuffer = uniFullPathName.Buffer;
6169
6170             RtlZeroMemory( uniFullPathName.Buffer,
6171                            uniFullPathName.MaximumLength);
6172
6173             RtlCopyMemory( uniFullPathName.Buffer,
6174                            DirectoryCB->NameInformation.TargetName.Buffer,
6175                            DirectoryCB->NameInformation.TargetName.Length);
6176
6177             uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6178
6179             //
6180             // This name should begin with the \afs server so parse it off and check it
6181             //
6182
6183             FsRtlDissectName( uniFullPathName,
6184                               &uniComponentName,
6185                               &uniRemainingPath);
6186
6187             if( RtlCompareUnicodeString( &uniComponentName,
6188                                          &AFSServerName,
6189                                          TRUE) != 0)
6190             {
6191
6192                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6193
6194                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
6195                               AFS_TRACE_LEVEL_ERROR,
6196                               "AFSRetrieveFileAttributes Name %wZ contains invalid server name\n",
6197                               &uniFullPathName);
6198
6199                 try_return( ntStatus = STATUS_OBJECT_PATH_INVALID);
6200             }
6201
6202             uniFullPathName = uniRemainingPath;
6203
6204             uniParsedName = uniFullPathName;
6205
6206             ulNameDifference = (ULONG)(uniFullPathName.Length > 0 ? ((char *)uniFullPathName.Buffer - (char *)pwchBuffer) : 0);
6207
6208             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6209
6210             //
6211             // Our name array
6212             //
6213
6214             pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
6215                                            0);
6216
6217             if( pNameArray == NULL)
6218             {
6219
6220                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6221             }
6222
6223             pVolumeCB = AFSGlobalRoot;
6224
6225             pParentDirEntry = AFSGlobalRoot->DirectoryCB;
6226         }
6227
6228         //
6229         // Increment the ref count on the volume and dir entry for correct processing below
6230         //
6231
6232         lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
6233
6234         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6235                       AFS_TRACE_LEVEL_VERBOSE,
6236                       "AFSRetrieveFileAttributes Increment count on volume %08lX Cnt %d\n",
6237                       pVolumeCB,
6238                       lCount);
6239
6240         lCount = InterlockedIncrement( &pParentDirEntry->OpenReferenceCount);
6241
6242         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6243                       AFS_TRACE_LEVEL_VERBOSE,
6244                       "AFSRetrieveFileAttributes Increment count on %wZ DE %p Ccb %p Cnt %d\n",
6245                       &pParentDirEntry->NameInformation.FileName,
6246                       pParentDirEntry,
6247                       NULL,
6248                       lCount);
6249
6250         ntStatus = AFSLocateNameEntry( NULL,
6251                                        NULL,
6252                                        &uniFullPathName,
6253                                        &uniParsedName,
6254                                        pNameArray,
6255                                        AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL,
6256                                        &pVolumeCB,
6257                                        &pParentDirEntry,
6258                                        &pDirectoryEntry,
6259                                        NULL);
6260
6261         if( !NT_SUCCESS( ntStatus))
6262         {
6263
6264             //
6265             // The volume lock was released on failure above
6266             // Except for STATUS_OBJECT_NAME_NOT_FOUND
6267             //
6268
6269             if( ntStatus == STATUS_OBJECT_NAME_NOT_FOUND)
6270             {
6271
6272                 if( pVolumeCB != NULL)
6273                 {
6274
6275                     lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
6276
6277                     AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6278                                   AFS_TRACE_LEVEL_VERBOSE,
6279                                   "AFSRetrieveFileAttributes Decrement count on volume %08lX Cnt %d\n",
6280                                   pVolumeCB,
6281                                   lCount);
6282                 }
6283
6284                 if( pDirectoryEntry != NULL)
6285                 {
6286
6287                     lCount = InterlockedDecrement( &pDirectoryEntry->OpenReferenceCount);
6288
6289                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6290                                   AFS_TRACE_LEVEL_VERBOSE,
6291                                   "AFSRetrieveFileAttributes Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6292                                   &pDirectoryEntry->NameInformation.FileName,
6293                                   pDirectoryEntry,
6294                                   NULL,
6295                                   lCount);
6296                 }
6297                 else
6298                 {
6299
6300                     lCount = InterlockedDecrement( &pParentDirEntry->OpenReferenceCount);
6301
6302                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6303                                   AFS_TRACE_LEVEL_VERBOSE,
6304                                   "AFSRetrieveFileAttributes Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
6305                                   &pParentDirEntry->NameInformation.FileName,
6306                                   pParentDirEntry,
6307                                   NULL,
6308                                   lCount);
6309                 }
6310             }
6311
6312             pVolumeCB = NULL;
6313
6314             try_return( ntStatus);
6315         }
6316
6317         //
6318         // Store off the information
6319         //
6320
6321         FileInfo->FileAttributes = pDirectoryEntry->ObjectInformation->FileAttributes;
6322
6323         //
6324         // Check for the mount point being returned
6325         //
6326
6327         if( pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_MOUNTPOINT)
6328         {
6329
6330             FileInfo->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
6331         }
6332         else if( pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK ||
6333                  pDirectoryEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DFSLINK)
6334         {
6335
6336             if ( FileInfo->FileAttributes == FILE_ATTRIBUTE_NORMAL)
6337             {
6338
6339                 FileInfo->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
6340             }
6341             else
6342             {
6343
6344                 FileInfo->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
6345             }
6346         }
6347
6348         FileInfo->AllocationSize = pDirectoryEntry->ObjectInformation->AllocationSize;
6349
6350         FileInfo->EndOfFile = pDirectoryEntry->ObjectInformation->EndOfFile;
6351
6352         FileInfo->CreationTime = pDirectoryEntry->ObjectInformation->CreationTime;
6353
6354         FileInfo->LastAccessTime = pDirectoryEntry->ObjectInformation->LastAccessTime;
6355
6356         FileInfo->LastWriteTime = pDirectoryEntry->ObjectInformation->LastWriteTime;
6357
6358         FileInfo->ChangeTime = pDirectoryEntry->ObjectInformation->ChangeTime;
6359
6360         //
6361         // Remove the reference made above
6362         //
6363
6364         lCount = InterlockedDecrement( &pDirectoryEntry->OpenReferenceCount);
6365
6366         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6367                       AFS_TRACE_LEVEL_VERBOSE,
6368                       "AFSRetrieveFileAttributes Decrement3 count on %wZ DE %p Ccb %p Cnt %d\n",
6369                       &pDirectoryEntry->NameInformation.FileName,
6370                       pDirectoryEntry,
6371                       NULL,
6372                       lCount);
6373
6374 try_exit:
6375
6376         if( pDirEntry != NULL)
6377         {
6378
6379             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
6380         }
6381
6382         if( pVolumeCB != NULL)
6383         {
6384
6385             lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
6386
6387             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6388                           AFS_TRACE_LEVEL_VERBOSE,
6389                           "AFSRetrieveFileAttributes Decrement2 count on volume %08lX Cnt %d\n",
6390                           pVolumeCB,
6391                           lCount);
6392         }
6393
6394         if( pNameArray != NULL)
6395         {
6396
6397             AFSFreeNameArray( pNameArray);
6398         }
6399
6400         if( pwchBuffer != NULL)
6401         {
6402
6403             //
6404             // Always free the buffer that we allocated as AFSLocateNameEntry
6405             // will not free it.  If uniFullPathName.Buffer was allocated by
6406             // AFSLocateNameEntry, then we must free that as well.
6407             // Check that the uniFullPathName.Buffer in the string is not the same
6408             // offset by the length of the server name
6409             //
6410
6411             if( uniFullPathName.Length > 0 &&
6412                 pwchBuffer != (WCHAR *)((char *)uniFullPathName.Buffer - ulNameDifference))
6413             {
6414
6415                 AFSExFreePoolWithTag( uniFullPathName.Buffer, 0);
6416             }
6417
6418             AFSExFreePoolWithTag( pwchBuffer, 0);
6419         }
6420     }
6421
6422     return ntStatus;
6423 }
6424
6425 AFSObjectInfoCB *
6426 AFSAllocateObjectInfo( IN AFSObjectInfoCB *ParentObjectInfo,
6427                        IN ULONGLONG HashIndex)
6428 {
6429
6430     NTSTATUS ntStatus = STATUS_SUCCESS;
6431     AFSObjectInfoCB *pObjectInfo = NULL;
6432     LONG lCount;
6433
6434     __Enter
6435     {
6436
6437         pObjectInfo = (AFSObjectInfoCB *)AFSExAllocatePoolWithTag( PagedPool,
6438                                                                    sizeof( AFSObjectInfoCB),
6439                                                                    AFS_OBJECT_INFO_TAG);
6440
6441         if( pObjectInfo == NULL)
6442         {
6443
6444             try_return( pObjectInfo);
6445         }
6446
6447         RtlZeroMemory( pObjectInfo,
6448                        sizeof( AFSObjectInfoCB));
6449
6450         pObjectInfo->NonPagedInfo = (AFSNonPagedObjectInfoCB *)AFSExAllocatePoolWithTag( NonPagedPool,
6451                                                                                          sizeof( AFSNonPagedObjectInfoCB),
6452                                                                                          AFS_NP_OBJECT_INFO_TAG);
6453
6454         if( pObjectInfo->NonPagedInfo == NULL)
6455         {
6456
6457             AFSExFreePoolWithTag( pObjectInfo, AFS_OBJECT_INFO_TAG);
6458
6459             try_return( pObjectInfo = NULL);
6460         }
6461
6462         ExInitializeResourceLite( &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock);
6463
6464         pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock = &pObjectInfo->NonPagedInfo->DirectoryNodeHdrLock;
6465
6466         pObjectInfo->VolumeCB = ParentObjectInfo->VolumeCB;
6467
6468         pObjectInfo->ParentObjectInformation = ParentObjectInfo;
6469
6470         if( ParentObjectInfo != NULL)
6471         {
6472             lCount = InterlockedIncrement( &ParentObjectInfo->ObjectReferenceCount);
6473         }
6474
6475         //
6476         // Initialize the access time
6477         //
6478
6479         KeQueryTickCount( &pObjectInfo->LastAccessCount);
6480
6481         if( HashIndex != 0)
6482         {
6483
6484             //
6485             // Insert the entry into the object tree and list
6486             //
6487
6488             pObjectInfo->TreeEntry.HashIndex = HashIndex;
6489
6490             if( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead == NULL)
6491             {
6492
6493                 ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead = &pObjectInfo->TreeEntry;
6494             }
6495             else
6496             {
6497
6498                 ntStatus = AFSInsertHashEntry( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
6499                                                &pObjectInfo->TreeEntry);
6500
6501                 ASSERT( NT_SUCCESS( ntStatus));
6502             }
6503
6504             //
6505             // And the object list in the volume
6506             //
6507
6508             if( ParentObjectInfo->VolumeCB->ObjectInfoListHead == NULL)
6509             {
6510
6511                 ParentObjectInfo->VolumeCB->ObjectInfoListHead = pObjectInfo;
6512             }
6513             else
6514             {
6515
6516                 ParentObjectInfo->VolumeCB->ObjectInfoListTail->ListEntry.fLink = (void *)pObjectInfo;
6517
6518                 pObjectInfo->ListEntry.bLink = (void *)ParentObjectInfo->VolumeCB->ObjectInfoListTail;
6519             }
6520
6521             ParentObjectInfo->VolumeCB->ObjectInfoListTail = pObjectInfo;
6522
6523             //
6524             // Indicate the object is in the hash tree and linked list in the volume
6525             //
6526
6527             SetFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE | AFS_OBJECT_INSERTED_VOLUME_LIST);
6528         }
6529
6530 try_exit:
6531
6532         NOTHING;
6533     }
6534
6535     return pObjectInfo;
6536 }
6537
6538 void
6539 AFSDeleteObjectInfo( IN AFSObjectInfoCB *ObjectInfo)
6540 {
6541
6542     BOOLEAN bAcquiredTreeLock = FALSE;
6543     LONG lCount;
6544
6545     if( !ExIsResourceAcquiredExclusiveLite( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock))
6546     {
6547
6548         ASSERT( !ExIsResourceAcquiredLite( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock));
6549
6550         AFSAcquireExcl( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
6551                         TRUE);
6552
6553         bAcquiredTreeLock = TRUE;
6554     }
6555
6556     //
6557     // Remove it from the tree and list if it was inserted
6558     //
6559
6560     if( BooleanFlagOn( ObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
6561     {
6562
6563         AFSRemoveHashEntry( &ObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
6564                             &ObjectInfo->TreeEntry);
6565     }
6566
6567     if( BooleanFlagOn( ObjectInfo->Flags, AFS_OBJECT_INSERTED_VOLUME_LIST))
6568     {
6569
6570         if( ObjectInfo->ListEntry.fLink == NULL)
6571         {
6572
6573             ObjectInfo->VolumeCB->ObjectInfoListTail = (AFSObjectInfoCB *)ObjectInfo->ListEntry.bLink;
6574
6575             if( ObjectInfo->VolumeCB->ObjectInfoListTail != NULL)
6576             {
6577
6578                 ObjectInfo->VolumeCB->ObjectInfoListTail->ListEntry.fLink = NULL;
6579             }
6580         }
6581         else
6582         {
6583
6584             ((AFSObjectInfoCB *)(ObjectInfo->ListEntry.fLink))->ListEntry.bLink = ObjectInfo->ListEntry.bLink;
6585         }
6586
6587         if( ObjectInfo->ListEntry.bLink == NULL)
6588         {
6589
6590             ObjectInfo->VolumeCB->ObjectInfoListHead = (AFSObjectInfoCB *)ObjectInfo->ListEntry.fLink;
6591
6592             if( ObjectInfo->VolumeCB->ObjectInfoListHead != NULL)
6593             {
6594
6595                 ObjectInfo->VolumeCB->ObjectInfoListHead->ListEntry.bLink = NULL;
6596             }
6597         }
6598         else
6599         {
6600
6601             ((AFSObjectInfoCB *)(ObjectInfo->ListEntry.bLink))->ListEntry.fLink = ObjectInfo->ListEntry.fLink;
6602         }
6603     }
6604
6605     if( ObjectInfo->ParentObjectInformation != NULL)
6606     {
6607
6608         lCount = InterlockedDecrement( &ObjectInfo->ParentObjectInformation->ObjectReferenceCount);
6609     }
6610
6611     if( bAcquiredTreeLock)
6612     {
6613
6614         AFSReleaseResource( ObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
6615     }
6616
6617     //
6618     // Release the fid in the service
6619     //
6620
6621     if( BooleanFlagOn( ObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE))
6622     {
6623
6624         AFSReleaseFid( &ObjectInfo->FileId);
6625     }
6626
6627     ExDeleteResourceLite( &ObjectInfo->NonPagedInfo->DirectoryNodeHdrLock);
6628
6629     AFSExFreePoolWithTag( ObjectInfo->NonPagedInfo, AFS_NP_OBJECT_INFO_TAG);
6630
6631     AFSExFreePoolWithTag( ObjectInfo, AFS_OBJECT_INFO_TAG);
6632
6633     return;
6634 }
6635
6636 NTSTATUS
6637 AFSEvaluateRootEntry( IN AFSDirectoryCB *DirectoryCB,
6638                       OUT AFSDirectoryCB **TargetDirEntry)
6639 {
6640
6641     NTSTATUS ntStatus = STATUS_SUCCESS;
6642     AFSDirEnumEntry *pDirEntry = NULL, *pLastDirEntry = NULL;
6643     UNICODE_STRING uniFullPathName;
6644     AFSNameArrayHdr    *pNameArray = NULL;
6645     AFSVolumeCB *pVolumeCB = NULL;
6646     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
6647     WCHAR *pwchBuffer = NULL;
6648     UNICODE_STRING uniComponentName, uniRemainingPath, uniParsedName;
6649     ULONG ulNameDifference = 0;
6650     GUID    stAuthGroup;
6651     LONG lCount;
6652
6653     __Enter
6654     {
6655
6656         ntStatus = AFSRetrieveValidAuthGroup( NULL,
6657                                               DirectoryCB->ObjectInformation,
6658                                               FALSE,
6659                                               &stAuthGroup);
6660
6661         if( !NT_SUCCESS( ntStatus))
6662         {
6663             try_return( ntStatus);
6664         }
6665
6666         //
6667         // Retrieve a target name for the entry
6668         //
6669
6670         AFSAcquireShared( &DirectoryCB->NonPaged->Lock,
6671                           TRUE);
6672
6673         if( DirectoryCB->NameInformation.TargetName.Length == 0)
6674         {
6675
6676             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6677
6678             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
6679                                               &stAuthGroup,
6680                                               FALSE,
6681                                               &pDirEntry);
6682
6683             if( !NT_SUCCESS( ntStatus) ||
6684                 pDirEntry->TargetNameLength == 0)
6685             {
6686
6687                 if( pDirEntry != NULL)
6688                 {
6689
6690                     ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
6691                 }
6692
6693                 try_return( ntStatus);
6694             }
6695
6696             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
6697                             TRUE);
6698
6699             if( DirectoryCB->NameInformation.TargetName.Length == 0)
6700             {
6701
6702                 //
6703                 // Update the target name
6704                 //
6705
6706                 ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
6707                                                 &DirectoryCB->Flags,
6708                                                 (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
6709                                                 (USHORT)pDirEntry->TargetNameLength);
6710
6711                 if( !NT_SUCCESS( ntStatus))
6712                 {
6713
6714                     AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6715
6716                     try_return( ntStatus);
6717                 }
6718             }
6719
6720             AFSConvertToShared( &DirectoryCB->NonPaged->Lock);
6721         }
6722
6723         //
6724         // Need to pass the full path in for parsing.
6725         //
6726
6727         uniFullPathName.Length = 0;
6728         uniFullPathName.MaximumLength = DirectoryCB->NameInformation.TargetName.Length;
6729
6730         uniFullPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
6731                                                                     uniFullPathName.MaximumLength,
6732                                                                     AFS_NAME_BUFFER_EIGHT_TAG);
6733
6734         if( uniFullPathName.Buffer == NULL)
6735         {
6736
6737             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6738
6739             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6740         }
6741
6742         pwchBuffer = uniFullPathName.Buffer;
6743
6744         RtlZeroMemory( uniFullPathName.Buffer,
6745                        uniFullPathName.MaximumLength);
6746
6747         RtlCopyMemory( uniFullPathName.Buffer,
6748                        DirectoryCB->NameInformation.TargetName.Buffer,
6749                        DirectoryCB->NameInformation.TargetName.Length);
6750
6751         uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6752
6753         //
6754         // This name should begin with the \afs server so parse it off and chech it
6755         //
6756
6757         FsRtlDissectName( uniFullPathName,
6758                           &uniComponentName,
6759                           &uniRemainingPath);
6760
6761         if( RtlCompareUnicodeString( &uniComponentName,
6762                                      &AFSServerName,
6763                                      TRUE) != 0)
6764         {
6765
6766             //
6767             // Try evaluating the full path
6768             //
6769
6770             uniFullPathName.Buffer = pwchBuffer;
6771
6772             uniFullPathName.Length = DirectoryCB->NameInformation.TargetName.Length;
6773
6774             uniFullPathName.MaximumLength = uniFullPathName.Length;
6775         }
6776         else
6777         {
6778
6779             uniFullPathName = uniRemainingPath;
6780         }
6781
6782         uniParsedName = uniFullPathName;
6783
6784         ulNameDifference = (ULONG)(uniFullPathName.Length > 0 ? ((char *)uniFullPathName.Buffer - (char *)pwchBuffer) : 0);
6785
6786         AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
6787
6788         //
6789         // Our name array
6790         //
6791
6792         pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
6793                                        0);
6794
6795         if( pNameArray == NULL)
6796         {
6797
6798             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
6799         }
6800
6801         pVolumeCB = AFSGlobalRoot;
6802
6803         pParentDirEntry = AFSGlobalRoot->DirectoryCB;
6804
6805         lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
6806
6807         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6808                       AFS_TRACE_LEVEL_VERBOSE,
6809                       "AFSEvaluateRootEntry Increment count on volume %08lX Cnt %d\n",
6810                       pVolumeCB,
6811                       lCount);
6812
6813         lCount = InterlockedIncrement( &pParentDirEntry->OpenReferenceCount);
6814
6815         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6816                       AFS_TRACE_LEVEL_VERBOSE,
6817                       "AFSEvaluateRootEntry Increment count on %wZ DE %p Ccb %p Cnt %d\n",
6818                       &pParentDirEntry->NameInformation.FileName,
6819                       pParentDirEntry,
6820                       NULL,
6821                       lCount);
6822
6823         ntStatus = AFSLocateNameEntry( NULL,
6824                                        NULL,
6825                                        &uniFullPathName,
6826                                        &uniParsedName,
6827                                        pNameArray,
6828                                        0,
6829                                        &pVolumeCB,
6830                                        &pParentDirEntry,
6831                                        &pDirectoryEntry,
6832                                        NULL);
6833
6834         if( !NT_SUCCESS( ntStatus))
6835         {
6836
6837             //
6838             // The volume lock was released on failure above
6839             // Except for STATUS_OBJECT_NAME_NOT_FOUND
6840             //
6841
6842             if( ntStatus == STATUS_OBJECT_NAME_NOT_FOUND)
6843             {
6844
6845                 if( pVolumeCB != NULL)
6846                 {
6847
6848                     lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
6849
6850                     AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6851                                   AFS_TRACE_LEVEL_VERBOSE,
6852                                   "AFSEvaluateRootEntry Decrement count on volume %08lX Cnt %d\n",
6853                                   pVolumeCB,
6854                                   lCount);
6855                 }
6856
6857                 if( pDirectoryEntry != NULL)
6858                 {
6859
6860                     lCount = InterlockedDecrement( &pDirectoryEntry->OpenReferenceCount);
6861
6862                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6863                                   AFS_TRACE_LEVEL_VERBOSE,
6864                                   "AFSEvaluateRootEntry Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6865                                   &pDirectoryEntry->NameInformation.FileName,
6866                                   pDirectoryEntry,
6867                                   NULL,
6868                                   lCount);
6869                 }
6870                 else
6871                 {
6872
6873                     lCount = InterlockedDecrement( &pParentDirEntry->OpenReferenceCount);
6874
6875                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
6876                                   AFS_TRACE_LEVEL_VERBOSE,
6877                                   "AFSEvaluateRootEntry Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
6878                                   &pParentDirEntry->NameInformation.FileName,
6879                                   pParentDirEntry,
6880                                   NULL,
6881                                   lCount);
6882                 }
6883             }
6884
6885             pVolumeCB = NULL;
6886
6887             try_return( ntStatus);
6888         }
6889
6890         //
6891         // Pass back the target dir entry for this request
6892         //
6893
6894         *TargetDirEntry = pDirectoryEntry;
6895
6896 try_exit:
6897
6898         if( pDirEntry != NULL)
6899         {
6900
6901             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
6902         }
6903
6904         if( pVolumeCB != NULL)
6905         {
6906
6907             lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
6908
6909             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
6910                           AFS_TRACE_LEVEL_VERBOSE,
6911                           "AFSEvaluateRootEntry2 Decrement count on volume %08lX Cnt %d\n",
6912                           pVolumeCB,
6913                           lCount);
6914         }
6915
6916         if( pNameArray != NULL)
6917         {
6918
6919             AFSFreeNameArray( pNameArray);
6920         }
6921
6922         if( pwchBuffer != NULL)
6923         {
6924
6925             //
6926             // Always free the buffer that we allocated as AFSLocateNameEntry
6927             // will not free it.  If uniFullPathName.Buffer was allocated by
6928             // AFSLocateNameEntry, then we must free that as well.
6929             // Check that the uniFullPathName.Buffer in the string is not the same
6930             // offset by the length of the server name
6931             //
6932
6933             if( uniFullPathName.Length > 0 &&
6934                 pwchBuffer != (WCHAR *)((char *)uniFullPathName.Buffer - ulNameDifference))
6935             {
6936
6937                 AFSExFreePoolWithTag( uniFullPathName.Buffer, 0);
6938             }
6939
6940             AFSExFreePoolWithTag( pwchBuffer, 0);
6941         }
6942     }
6943
6944     return ntStatus;
6945 }
6946
6947 NTSTATUS
6948 AFSCleanupFcb( IN AFSFcb *Fcb,
6949                IN BOOLEAN ForceFlush)
6950 {
6951
6952     NTSTATUS ntStatus = STATUS_SUCCESS;
6953     AFSDeviceExt *pRDRDeviceExt = NULL, *pControlDeviceExt = NULL;
6954     LARGE_INTEGER liTime;
6955     IO_STATUS_BLOCK stIoStatus;
6956
6957     __Enter
6958     {
6959
6960         pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
6961
6962         pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
6963
6964         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
6965         {
6966
6967             if( !BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) &&
6968                 !BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
6969             {
6970
6971                 AFSAcquireExcl( &Fcb->NPFcb->Resource,
6972                                 TRUE);
6973
6974                 if( Fcb->OpenReferenceCount > 0)
6975                 {
6976
6977                     __try
6978                     {
6979
6980                         CcFlushCache( &Fcb->NPFcb->SectionObjectPointers,
6981                                       NULL,
6982                                       0,
6983                                       &stIoStatus);
6984
6985                         if( !NT_SUCCESS( stIoStatus.Status))
6986                         {
6987
6988                             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
6989                                           AFS_TRACE_LEVEL_ERROR,
6990                                           "AFSCleanupFcb CcFlushCache [1] failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
6991                                           Fcb->ObjectInformation->FileId.Cell,
6992                                           Fcb->ObjectInformation->FileId.Volume,
6993                                           Fcb->ObjectInformation->FileId.Vnode,
6994                                           Fcb->ObjectInformation->FileId.Unique,
6995                                           stIoStatus.Status,
6996                                           stIoStatus.Information);
6997
6998                             ntStatus = stIoStatus.Status;
6999                         }
7000
7001                         if ( !CcPurgeCacheSection( &Fcb->NPFcb->SectionObjectPointers,
7002                                                    NULL,
7003                                                    0,
7004                                                    FALSE))
7005                         {
7006
7007                             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
7008                                           AFS_TRACE_LEVEL_WARNING,
7009                                           "AFSCleanupFcb CcPurgeCacheSection [1] failure FID %08lX-%08lX-%08lX-%08lX\n",
7010                                           Fcb->ObjectInformation->FileId.Cell,
7011                                           Fcb->ObjectInformation->FileId.Volume,
7012                                           Fcb->ObjectInformation->FileId.Vnode,
7013                                           Fcb->ObjectInformation->FileId.Unique);
7014
7015                             SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7016                         }
7017                     }
7018                     __except( EXCEPTION_EXECUTE_HANDLER)
7019                     {
7020
7021                         ntStatus = GetExceptionCode();
7022
7023                         AFSDbgLogMsg( 0,
7024                                       0,
7025                                       "EXCEPTION - AFSCleanupFcb Cc [1] FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
7026                                       Fcb->ObjectInformation->FileId.Cell,
7027                                       Fcb->ObjectInformation->FileId.Volume,
7028                                       Fcb->ObjectInformation->FileId.Vnode,
7029                                       Fcb->ObjectInformation->FileId.Unique,
7030                                       ntStatus);
7031
7032                         SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7033                     }
7034                 }
7035
7036                 AFSReleaseResource( &Fcb->NPFcb->Resource);
7037
7038                 //
7039                 // Wait for any currently running flush or release requests to complete
7040                 //
7041
7042                 AFSWaitOnQueuedFlushes( Fcb);
7043
7044                 //
7045                 // Now perform another flush on the file
7046                 //
7047
7048                 if( !NT_SUCCESS( AFSFlushExtents( Fcb,
7049                                                   NULL)))
7050                 {
7051
7052                     AFSReleaseExtentsWithFlush( Fcb,
7053                                                 NULL,
7054                                                 TRUE);
7055                 }
7056             }
7057
7058             if( Fcb->OpenReferenceCount == 0 ||
7059                 BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
7060                 BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7061             {
7062
7063                 AFSTearDownFcbExtents( Fcb,
7064                                        NULL);
7065             }
7066
7067             try_return( ntStatus);
7068         }
7069
7070         KeQueryTickCount( &liTime);
7071
7072         //
7073         // First up are there dirty extents in the cache to flush?
7074         //
7075
7076         if( BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
7077             BooleanFlagOn( Fcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
7078         {
7079
7080             //
7081             // The file has been marked as invalid.  Dump it
7082             //
7083
7084             AFSTearDownFcbExtents( Fcb,
7085                                    NULL);
7086         }
7087         else if( ForceFlush ||
7088             ( ( Fcb->Specific.File.ExtentsDirtyCount ||
7089                 Fcb->Specific.File.ExtentCount) &&
7090               (liTime.QuadPart - Fcb->Specific.File.LastServerFlush.QuadPart)
7091                                                     >= pControlDeviceExt->Specific.Control.FcbFlushTimeCount.QuadPart))
7092         {
7093             if( !NT_SUCCESS( AFSFlushExtents( Fcb,
7094                                               NULL)) &&
7095                 Fcb->OpenReferenceCount == 0)
7096             {
7097
7098                 AFSReleaseExtentsWithFlush( Fcb,
7099                                             NULL,
7100                                             TRUE);
7101             }
7102         }
7103
7104         //
7105         // If there are extents and they haven't been used recently *and*
7106         // are not being used
7107         //
7108
7109         if( ( ForceFlush ||
7110               ( 0 != Fcb->Specific.File.ExtentCount &&
7111                 0 != Fcb->Specific.File.LastExtentAccess.QuadPart &&
7112                 (liTime.QuadPart - Fcb->Specific.File.LastExtentAccess.QuadPart) >=
7113                                         (AFS_SERVER_PURGE_SLEEP * pControlDeviceExt->Specific.Control.FcbPurgeTimeCount.QuadPart))) &&
7114             AFSAcquireExcl( &Fcb->NPFcb->Resource,
7115                             ForceFlush))
7116         {
7117
7118             __try
7119             {
7120
7121                 CcFlushCache( &Fcb->NPFcb->SectionObjectPointers,
7122                               NULL,
7123                               0,
7124                               &stIoStatus);
7125
7126                 if( !NT_SUCCESS( stIoStatus.Status))
7127                 {
7128
7129                     AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
7130                                   AFS_TRACE_LEVEL_ERROR,
7131                                   "AFSCleanupFcb CcFlushCache [2] failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
7132                                   Fcb->ObjectInformation->FileId.Cell,
7133                                   Fcb->ObjectInformation->FileId.Volume,
7134                                   Fcb->ObjectInformation->FileId.Vnode,
7135                                   Fcb->ObjectInformation->FileId.Unique,
7136                                   stIoStatus.Status,
7137                                   stIoStatus.Information);
7138
7139                     ntStatus = stIoStatus.Status;
7140                 }
7141
7142                 if( ForceFlush)
7143                 {
7144
7145                     if ( !CcPurgeCacheSection( &Fcb->NPFcb->SectionObjectPointers,
7146                                                NULL,
7147                                                0,
7148                                                FALSE))
7149                     {
7150
7151                         AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
7152                                       AFS_TRACE_LEVEL_WARNING,
7153                                       "AFSCleanupFcb CcPurgeCacheSection [2] failure FID %08lX-%08lX-%08lX-%08lX\n",
7154                                       Fcb->ObjectInformation->FileId.Cell,
7155                                       Fcb->ObjectInformation->FileId.Volume,
7156                                       Fcb->ObjectInformation->FileId.Vnode,
7157                                       Fcb->ObjectInformation->FileId.Unique);
7158
7159                         SetFlag( Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
7160                     }
7161                 }
7162             }
7163             __except( EXCEPTION_EXECUTE_HANDLER)
7164             {
7165
7166                 ntStatus = GetExceptionCode();
7167
7168                 AFSDbgLogMsg( 0,
7169                               0,
7170                               "EXCEPTION - AFSCleanupFcb Cc [2] FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
7171                               Fcb->ObjectInformation->FileId.Cell,
7172                               Fcb->ObjectInformation->FileId.Volume,
7173                               Fcb->ObjectInformation->FileId.Vnode,
7174                               Fcb->ObjectInformation->FileId.Unique,
7175                               ntStatus);
7176             }
7177
7178             AFSReleaseResource( &Fcb->NPFcb->Resource);
7179
7180             if( Fcb->OpenReferenceCount <= 0)
7181             {
7182
7183                 //
7184                 // Tear em down we'll not be needing them again
7185                 //
7186
7187                 AFSTearDownFcbExtents( Fcb,
7188                                        NULL);
7189             }
7190         }
7191
7192 try_exit:
7193
7194         NOTHING;
7195     }
7196
7197     return ntStatus;
7198 }
7199
7200 NTSTATUS
7201 AFSUpdateDirEntryName( IN AFSDirectoryCB *DirectoryCB,
7202                        IN UNICODE_STRING *NewFileName)
7203 {
7204
7205     NTSTATUS ntStatus = STATUS_SUCCESS;
7206     WCHAR *pTmpBuffer = NULL;
7207
7208     __Enter
7209     {
7210
7211         if( NewFileName->Length > DirectoryCB->NameInformation.FileName.Length)
7212         {
7213
7214             if( BooleanFlagOn( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER))
7215             {
7216
7217                 AFSExFreePoolWithTag( DirectoryCB->NameInformation.FileName.Buffer, 0);
7218
7219                 ClearFlag( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER);
7220
7221                 DirectoryCB->NameInformation.FileName.Buffer = NULL;
7222             }
7223
7224             //
7225             // OK, we need to allocate a new name buffer
7226             //
7227
7228             pTmpBuffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
7229                                                             NewFileName->Length,
7230                                                             AFS_NAME_BUFFER_NINE_TAG);
7231
7232             if( pTmpBuffer == NULL)
7233             {
7234
7235                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
7236             }
7237
7238             DirectoryCB->NameInformation.FileName.Buffer = pTmpBuffer;
7239
7240             DirectoryCB->NameInformation.FileName.MaximumLength = NewFileName->Length;
7241
7242             SetFlag( DirectoryCB->Flags, AFS_DIR_RELEASE_NAME_BUFFER);
7243         }
7244
7245         DirectoryCB->NameInformation.FileName.Length = NewFileName->Length;
7246
7247         RtlCopyMemory( DirectoryCB->NameInformation.FileName.Buffer,
7248                        NewFileName->Buffer,
7249                        NewFileName->Length);
7250
7251 try_exit:
7252
7253         NOTHING;
7254     }
7255
7256     return ntStatus;
7257 }
7258
7259 NTSTATUS
7260 AFSReadCacheFile( IN void *ReadBuffer,
7261                   IN LARGE_INTEGER *ReadOffset,
7262                   IN ULONG RequestedDataLength,
7263                   IN OUT PULONG BytesRead)
7264 {
7265
7266     NTSTATUS            ntStatus = STATUS_SUCCESS;
7267     PIRP                pIrp = NULL;
7268     KEVENT              kEvent;
7269     PIO_STACK_LOCATION  pIoStackLocation = NULL;
7270     AFSDeviceExt       *pRdrDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
7271     DEVICE_OBJECT      *pTargetDeviceObject = NULL;
7272     FILE_OBJECT        *pCacheFileObject = NULL;
7273
7274     __Enter
7275     {
7276
7277         pCacheFileObject = AFSReferenceCacheFileObject();
7278
7279         if( pCacheFileObject == NULL)
7280         {
7281             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
7282         }
7283
7284         pTargetDeviceObject = IoGetRelatedDeviceObject( pCacheFileObject);
7285
7286         //
7287         // Initialize the event
7288         //
7289
7290         KeInitializeEvent( &kEvent,
7291                            SynchronizationEvent,
7292                            FALSE);
7293
7294         //
7295         // Allocate an irp for this request.  This could also come from a
7296         // private pool, for instance.
7297         //
7298
7299         pIrp = IoAllocateIrp( pTargetDeviceObject->StackSize,
7300                               FALSE);
7301
7302         if( pIrp == NULL)
7303         {
7304
7305             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
7306         }
7307
7308         //
7309         // Build the IRP's main body
7310         //
7311
7312         pIrp->UserBuffer = ReadBuffer;
7313
7314         pIrp->Tail.Overlay.Thread = PsGetCurrentThread();
7315         pIrp->RequestorMode = KernelMode;
7316         pIrp->Flags |= IRP_READ_OPERATION;
7317
7318         //
7319         // Set up the I/O stack location.
7320         //
7321
7322         pIoStackLocation = IoGetNextIrpStackLocation( pIrp);
7323         pIoStackLocation->MajorFunction = IRP_MJ_READ;
7324         pIoStackLocation->DeviceObject = pTargetDeviceObject;
7325         pIoStackLocation->FileObject = pCacheFileObject;
7326         pIoStackLocation->Parameters.Read.Length = RequestedDataLength;
7327
7328         pIoStackLocation->Parameters.Read.ByteOffset.QuadPart = ReadOffset->QuadPart;
7329
7330         //
7331         // Set the completion routine.
7332         //
7333
7334         IoSetCompletionRoutine( pIrp,
7335                                 AFSIrpComplete,
7336                                 &kEvent,
7337                                 TRUE,
7338                                 TRUE,
7339                                 TRUE);
7340
7341         //
7342         // Send it to the FSD
7343         //
7344
7345         ntStatus = IoCallDriver( pTargetDeviceObject,
7346                                  pIrp);
7347
7348         if( NT_SUCCESS( ntStatus))
7349         {
7350
7351             //
7352             // Wait for the I/O
7353             //
7354
7355             ntStatus = KeWaitForSingleObject( &kEvent,
7356                                               Executive,
7357                                               KernelMode,
7358                                               FALSE,
7359                                               0);
7360
7361             if( NT_SUCCESS( ntStatus))
7362             {
7363
7364                 ntStatus = pIrp->IoStatus.Status;
7365
7366                 *BytesRead = (ULONG)pIrp->IoStatus.Information;
7367             }
7368         }
7369
7370 try_exit:
7371
7372         if( pCacheFileObject != NULL)
7373         {
7374             AFSReleaseCacheFileObject( pCacheFileObject);
7375         }
7376
7377         if( pIrp != NULL)
7378         {
7379
7380             if( pIrp->MdlAddress != NULL)
7381             {
7382
7383                 if( FlagOn( pIrp->MdlAddress->MdlFlags, MDL_PAGES_LOCKED))
7384                 {
7385
7386                     MmUnlockPages( pIrp->MdlAddress);
7387                 }
7388
7389                 IoFreeMdl( pIrp->MdlAddress);
7390             }
7391
7392             pIrp->MdlAddress = NULL;
7393
7394             //
7395             // Free the Irp
7396             //
7397
7398             IoFreeIrp( pIrp);
7399         }
7400     }
7401
7402     return ntStatus;
7403 }
7404
7405 NTSTATUS
7406 AFSIrpComplete( IN PDEVICE_OBJECT DeviceObject,
7407                 IN PIRP           Irp,
7408                 IN PVOID          Context)
7409 {
7410
7411     KEVENT *pEvent = (KEVENT *)Context;
7412
7413     KeSetEvent( pEvent,
7414                 0,
7415                 FALSE);
7416
7417     return STATUS_MORE_PROCESSING_REQUIRED;
7418 }
7419
7420 BOOLEAN
7421 AFSIsDirectoryEmptyForDelete( IN AFSFcb *Fcb)
7422 {
7423
7424     BOOLEAN bIsEmpty = FALSE;
7425     AFSDirectoryCB *pDirEntry = NULL;
7426
7427     __Enter
7428     {
7429
7430         AFSAcquireShared( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
7431                           TRUE);
7432
7433         bIsEmpty = TRUE;
7434
7435         if( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL)
7436         {
7437
7438             pDirEntry = Fcb->ObjectInformation->Specific.Directory.DirectoryNodeListHead;
7439
7440             while( pDirEntry != NULL)
7441             {
7442
7443                 if( !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_FAKE) &&
7444                     !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED))
7445                 {
7446
7447                     bIsEmpty = FALSE;
7448
7449                     break;
7450                 }
7451
7452                 pDirEntry = (AFSDirectoryCB *)pDirEntry->ListEntry.fLink;
7453             }
7454
7455         }
7456
7457         AFSReleaseResource( Fcb->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
7458     }
7459
7460     return bIsEmpty;
7461 }
7462
7463 void
7464 AFSRemoveNameEntry( IN AFSObjectInfoCB *ParentObjectInfo,
7465                     IN AFSDirectoryCB *DirEntry)
7466 {
7467
7468     NTSTATUS ntStatus = STATUS_SUCCESS;
7469
7470     __Enter
7471     {
7472
7473         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
7474         {
7475
7476             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
7477                           AFS_TRACE_LEVEL_VERBOSE,
7478                           "AFSRemoveNameEntry DE %p for %wZ has NOT_IN flag set\n",
7479                           DirEntry,
7480                           &DirEntry->NameInformation.FileName);
7481
7482             try_return( ntStatus);
7483         }
7484
7485         ASSERT( ExIsResourceAcquiredExclusiveLite( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock));
7486
7487         //
7488         // Remove the entry from the parent tree
7489         //
7490
7491         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
7492                       AFS_TRACE_LEVEL_VERBOSE,
7493                       "AFSRemoveNameEntry DE %p for %wZ removing from case sensitive tree\n",
7494                       DirEntry,
7495                       &DirEntry->NameInformation.FileName);
7496
7497         AFSRemoveCaseSensitiveDirEntry( &ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
7498                                         DirEntry);
7499
7500         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
7501                       AFS_TRACE_LEVEL_VERBOSE,
7502                       "AFSRemoveNameEntry DE %p for %wZ removing from case insensitive tree\n",
7503                       DirEntry,
7504                       &DirEntry->NameInformation.FileName);
7505
7506         AFSRemoveCaseInsensitiveDirEntry( &ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
7507                                           DirEntry);
7508
7509         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME))
7510         {
7511
7512             //
7513             // From the short name tree
7514             //
7515
7516             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
7517                           AFS_TRACE_LEVEL_VERBOSE,
7518                           "AFSRemoveNameEntry DE %p for %wZ removing from shortname tree\n",
7519                           DirEntry,
7520                           &DirEntry->NameInformation.FileName);
7521
7522             AFSRemoveShortNameDirEntry( &ParentObjectInfo->Specific.Directory.ShortNameTree,
7523                                         DirEntry);
7524
7525             ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
7526         }
7527
7528         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
7529                       AFS_TRACE_LEVEL_VERBOSE,
7530                       "AFSRemoveNameEntry DE %p for %wZ setting NOT_IN flag\n",
7531                       DirEntry,
7532                       &DirEntry->NameInformation.FileName);
7533
7534         SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
7535
7536         ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
7537
7538 try_exit:
7539
7540         NOTHING;
7541     }
7542
7543     return;
7544 }
7545
7546 LARGE_INTEGER
7547 AFSGetAuthenticationId()
7548 {
7549
7550     LARGE_INTEGER liAuthId = {0,0};
7551     NTSTATUS ntStatus = STATUS_SUCCESS;
7552     PACCESS_TOKEN hToken = NULL;
7553     PTOKEN_STATISTICS pTokenInfo = NULL;
7554     BOOLEAN bCopyOnOpen = FALSE;
7555     BOOLEAN bEffectiveOnly = FALSE;
7556     BOOLEAN bPrimaryToken = FALSE;
7557     SECURITY_IMPERSONATION_LEVEL stImpersonationLevel;
7558
7559     __Enter
7560     {
7561
7562         hToken = PsReferenceImpersonationToken( PsGetCurrentThread(),
7563                                                 &bCopyOnOpen,
7564                                                 &bEffectiveOnly,
7565                                                 &stImpersonationLevel);
7566
7567         if( hToken == NULL)
7568         {
7569
7570             hToken = PsReferencePrimaryToken( PsGetCurrentProcess());
7571
7572             if( hToken == NULL)
7573             {
7574
7575                 AFSDbgLogMsg( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7576                               AFS_TRACE_LEVEL_ERROR,
7577                               "AFSGetAuthenticationId Failed to retrieve impersonation or primary token\n");
7578
7579                 try_return( ntStatus);
7580             }
7581
7582             bPrimaryToken = TRUE;
7583         }
7584
7585         ntStatus = SeQueryInformationToken( hToken,
7586                                             TokenStatistics,
7587                                             (PVOID *)&pTokenInfo);
7588
7589         if( !NT_SUCCESS( ntStatus))
7590         {
7591
7592             AFSDbgLogMsg( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7593                           AFS_TRACE_LEVEL_ERROR,
7594                           "AFSGetAuthenticationId Failed to retrieve information Status %08lX\n", ntStatus);
7595
7596             try_return( ntStatus);
7597         }
7598
7599         liAuthId.HighPart = pTokenInfo->AuthenticationId.HighPart;
7600         liAuthId.LowPart = pTokenInfo->AuthenticationId.LowPart;
7601
7602         AFSDbgLogMsg( AFS_SUBSYSTEM_NETWORK_PROVIDER,
7603                       AFS_TRACE_LEVEL_VERBOSE,
7604                       "AFSGetAuthenticationId Successfully retrieved authentication ID %I64X\n",
7605                       liAuthId.QuadPart);
7606
7607 try_exit:
7608
7609         if( hToken != NULL)
7610         {
7611
7612             if( !bPrimaryToken)
7613             {
7614
7615                 PsDereferenceImpersonationToken( hToken);
7616             }
7617             else
7618             {
7619
7620                 PsDereferencePrimaryToken( hToken);
7621             }
7622         }
7623
7624         if( pTokenInfo != NULL)
7625         {
7626
7627             ExFreePool( pTokenInfo);    // Allocated by SeQueryInformationToken
7628         }
7629     }
7630
7631     return liAuthId;
7632 }
7633
7634 void
7635 AFSUnwindFileInfo( IN AFSFcb *Fcb,
7636                    IN AFSCcb *Ccb)
7637 {
7638
7639     if( Ccb->FileUnwindInfo.FileAttributes != (ULONG)-1)
7640     {
7641         Ccb->DirectoryCB->ObjectInformation->FileAttributes = Ccb->FileUnwindInfo.FileAttributes;
7642     }
7643
7644     if( Ccb->FileUnwindInfo.CreationTime.QuadPart != (ULONGLONG)-1)
7645     {
7646         Ccb->DirectoryCB->ObjectInformation->CreationTime.QuadPart = Ccb->FileUnwindInfo.CreationTime.QuadPart;
7647     }
7648
7649     if( Ccb->FileUnwindInfo.LastAccessTime.QuadPart != (ULONGLONG)-1)
7650     {
7651         Ccb->DirectoryCB->ObjectInformation->LastAccessTime.QuadPart = Ccb->FileUnwindInfo.LastAccessTime.QuadPart;
7652     }
7653
7654     if( Ccb->FileUnwindInfo.LastWriteTime.QuadPart != (ULONGLONG)-1)
7655     {
7656         Ccb->DirectoryCB->ObjectInformation->LastWriteTime.QuadPart = Ccb->FileUnwindInfo.LastWriteTime.QuadPart;
7657     }
7658
7659     if( Ccb->FileUnwindInfo.ChangeTime.QuadPart != (ULONGLONG)-1)
7660     {
7661         Ccb->DirectoryCB->ObjectInformation->ChangeTime.QuadPart = Ccb->FileUnwindInfo.ChangeTime.QuadPart;
7662     }
7663
7664     return;
7665 }
7666
7667 BOOLEAN
7668 AFSValidateDirList( IN AFSObjectInfoCB *ObjectInfo)
7669 {
7670
7671     BOOLEAN bIsValid = TRUE;
7672     ULONG ulCount = 0;
7673     AFSDirectoryCB *pCurrentDirEntry = NULL, *pDirEntry = NULL;
7674
7675     pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
7676
7677     while( pCurrentDirEntry != NULL)
7678     {
7679
7680         if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_FAKE))
7681         {
7682             ulCount++;
7683
7684             if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
7685             {
7686
7687                 pDirEntry = NULL;
7688
7689                 AFSLocateCaseSensitiveDirEntry( ObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
7690                                                 (ULONG)pCurrentDirEntry->CaseSensitiveTreeEntry.HashIndex,
7691                                                 &pDirEntry);
7692
7693                 if( pDirEntry == NULL)
7694                 {
7695                     DbgBreakPoint();
7696                 }
7697             }
7698         }
7699
7700         pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
7701     }
7702
7703     if( ulCount != ObjectInfo->Specific.Directory.DirectoryNodeCount)
7704     {
7705
7706         AFSPrint("AFSValidateDirList Count off Calc: %d Stored: %d\n",
7707                   ulCount,
7708                   ObjectInfo->Specific.Directory.DirectoryNodeCount);
7709
7710         ObjectInfo->Specific.Directory.DirectoryNodeCount = ulCount;
7711
7712         bIsValid = FALSE;
7713     }
7714
7715     return bIsValid;
7716 }
7717
7718 PFILE_OBJECT
7719 AFSReferenceCacheFileObject()
7720 {
7721
7722     AFSDeviceExt       *pRdrDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
7723     FILE_OBJECT        *pCacheFileObject = NULL;
7724
7725     AFSAcquireShared( &pRdrDevExt->Specific.RDR.CacheFileLock,
7726                       TRUE);
7727
7728     pCacheFileObject = pRdrDevExt->Specific.RDR.CacheFileObject;
7729
7730     if( pCacheFileObject != NULL)
7731     {
7732         ObReferenceObject( pCacheFileObject);
7733     }
7734
7735     AFSReleaseResource( &pRdrDevExt->Specific.RDR.CacheFileLock);
7736
7737     return pCacheFileObject;
7738 }
7739
7740 void
7741 AFSReleaseCacheFileObject( IN PFILE_OBJECT CacheFileObject)
7742 {
7743
7744     ASSERT( CacheFileObject != NULL);
7745
7746     ObDereferenceObject( CacheFileObject);
7747
7748     return;
7749 }
7750
7751 NTSTATUS
7752 AFSInitializeLibrary( IN AFSLibraryInitCB *LibraryInit)
7753 {
7754
7755     NTSTATUS ntStatus = STATUS_SUCCESS;
7756     AFSDeviceExt *pControlDevExt = NULL;
7757     ULONG ulTimeIncrement = 0;
7758     LONG lCount;
7759
7760     __Enter
7761     {
7762
7763         AFSControlDeviceObject = LibraryInit->AFSControlDeviceObject;
7764
7765         AFSRDRDeviceObject = LibraryInit->AFSRDRDeviceObject;
7766
7767         AFSServerName = LibraryInit->AFSServerName;
7768
7769         AFSDebugFlags = LibraryInit->AFSDebugFlags;
7770
7771         //
7772         // Callbacks in the framework
7773         //
7774
7775         AFSProcessRequest = LibraryInit->AFSProcessRequest;
7776
7777         AFSDbgLogMsg = LibraryInit->AFSDbgLogMsg;
7778
7779         AFSAddConnectionEx = LibraryInit->AFSAddConnectionEx;
7780
7781         AFSExAllocatePoolWithTag = LibraryInit->AFSExAllocatePoolWithTag;
7782
7783         AFSExFreePoolWithTag = LibraryInit->AFSExFreePoolWithTag;
7784
7785         AFSDumpTraceFilesFnc = LibraryInit->AFSDumpTraceFiles;
7786
7787         AFSRetrieveAuthGroupFnc = LibraryInit->AFSRetrieveAuthGroup;
7788
7789         AFSLibCacheManagerCallbacks = LibraryInit->AFSCacheManagerCallbacks;
7790
7791         if( LibraryInit->AFSCacheBaseAddress != NULL)
7792         {
7793
7794             SetFlag( AFSLibControlFlags, AFS_REDIR_LIB_FLAGS_NONPERSISTENT_CACHE);
7795
7796             AFSLibCacheBaseAddress = LibraryInit->AFSCacheBaseAddress;
7797
7798             AFSLibCacheLength = LibraryInit->AFSCacheLength;
7799         }
7800
7801         //
7802         // Initialize some flush parameters
7803         //
7804
7805         pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
7806
7807         ulTimeIncrement = KeQueryTimeIncrement();
7808
7809         pControlDevExt->Specific.Control.ObjectLifeTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_OBJECT_LIFETIME / (ULONGLONG)ulTimeIncrement);
7810         pControlDevExt->Specific.Control.FcbPurgeTimeCount.QuadPart = AFS_SERVER_PURGE_DELAY;
7811         pControlDevExt->Specific.Control.FcbPurgeTimeCount.QuadPart /= ulTimeIncrement;
7812         pControlDevExt->Specific.Control.FcbFlushTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_SERVER_FLUSH_DELAY / (ULONGLONG)ulTimeIncrement);
7813         pControlDevExt->Specific.Control.ExtentRequestTimeCount.QuadPart = (ULONGLONG)((ULONGLONG)AFS_EXTENT_REQUEST_TIME/(ULONGLONG)ulTimeIncrement);
7814
7815         //
7816         // Initialize the global root entry
7817         //
7818
7819         ntStatus = AFSInitVolume( NULL,
7820                                   &LibraryInit->GlobalRootFid,
7821                                   &AFSGlobalRoot);
7822
7823         if( !NT_SUCCESS( ntStatus))
7824         {
7825
7826             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
7827                           AFS_TRACE_LEVEL_ERROR,
7828                           "AFSInitializeLibrary AFSInitVolume failure %08lX\n",
7829                           ntStatus);
7830
7831             try_return( ntStatus);
7832         }
7833
7834         ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
7835                                    AFSGlobalRoot);
7836
7837         if( !NT_SUCCESS( ntStatus))
7838         {
7839
7840             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
7841                           AFS_TRACE_LEVEL_ERROR,
7842                           "AFSInitializeLibrary AFSInitRootFcb failure %08lX\n",
7843                           ntStatus);
7844
7845             lCount = InterlockedDecrement( &AFSGlobalRoot->VolumeReferenceCount);
7846
7847             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
7848
7849             try_return( ntStatus);
7850         }
7851
7852         //
7853         // Update the node type code to AFS_ROOT_ALL
7854         //
7855
7856         AFSGlobalRoot->ObjectInformation.Fcb->Header.NodeTypeCode = AFS_ROOT_ALL;
7857
7858         SetFlag( AFSGlobalRoot->Flags, AFS_VOLUME_ACTIVE_GLOBAL_ROOT);
7859
7860         //
7861         // Invalidate all known volumes since contact with the service and therefore
7862         // the file server was lost.
7863         //
7864
7865         AFSInvalidateAllVolumes();
7866
7867         //
7868         // Drop the locks acquired above
7869         //
7870
7871         AFSInitVolumeWorker( AFSGlobalRoot);
7872
7873         lCount = InterlockedDecrement( &AFSGlobalRoot->VolumeReferenceCount);
7874
7875         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
7876
7877         AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Fcb->Header.Resource);
7878
7879 try_exit:
7880
7881         NOTHING;
7882     }
7883
7884     return ntStatus;
7885 }
7886
7887 NTSTATUS
7888 AFSCloseLibrary()
7889 {
7890
7891     NTSTATUS ntStatus = STATUS_SUCCESS;
7892     AFSDirectoryCB *pDirNode = NULL, *pLastDirNode = NULL;
7893
7894     __Enter
7895     {
7896
7897         if( AFSGlobalDotDirEntry != NULL)
7898         {
7899
7900             AFSDeleteObjectInfo( AFSGlobalDotDirEntry->ObjectInformation);
7901
7902             ExDeleteResourceLite( &AFSGlobalDotDirEntry->NonPaged->Lock);
7903
7904             ExFreePool( AFSGlobalDotDirEntry->NonPaged);
7905
7906             ExFreePool( AFSGlobalDotDirEntry);
7907
7908             AFSGlobalDotDirEntry = NULL;
7909         }
7910
7911         if( AFSGlobalDotDotDirEntry != NULL)
7912         {
7913
7914             AFSDeleteObjectInfo( AFSGlobalDotDotDirEntry->ObjectInformation);
7915
7916             ExDeleteResourceLite( &AFSGlobalDotDotDirEntry->NonPaged->Lock);
7917
7918             ExFreePool( AFSGlobalDotDotDirEntry->NonPaged);
7919
7920             ExFreePool( AFSGlobalDotDotDirEntry);
7921
7922             AFSGlobalDotDotDirEntry = NULL;
7923         }
7924
7925         if( AFSSpecialShareNames != NULL)
7926         {
7927
7928             pDirNode = AFSSpecialShareNames;
7929
7930             while( pDirNode != NULL)
7931             {
7932
7933                 pLastDirNode = (AFSDirectoryCB *)pDirNode->ListEntry.fLink;
7934
7935                 AFSDeleteObjectInfo( pDirNode->ObjectInformation);
7936
7937                 ExDeleteResourceLite( &pDirNode->NonPaged->Lock);
7938
7939                 ExFreePool( pDirNode->NonPaged);
7940
7941                 ExFreePool( pDirNode);
7942
7943                 pDirNode = pLastDirNode;
7944             }
7945
7946             AFSSpecialShareNames = NULL;
7947         }
7948     }
7949
7950     return ntStatus;
7951 }
7952
7953 NTSTATUS
7954 AFSDefaultLogMsg( IN ULONG Subsystem,
7955                   IN ULONG Level,
7956                   IN PCCH Format,
7957                   ...)
7958 {
7959
7960     NTSTATUS ntStatus = STATUS_SUCCESS;
7961     va_list va_args;
7962     char chDebugBuffer[ 256];
7963
7964     __Enter
7965     {
7966
7967         va_start( va_args, Format);
7968
7969         ntStatus = RtlStringCbVPrintfA( chDebugBuffer,
7970                                         256,
7971                                         Format,
7972                                         va_args);
7973
7974         if( NT_SUCCESS( ntStatus))
7975         {
7976             DbgPrint( chDebugBuffer);
7977         }
7978
7979         va_end( va_args);
7980     }
7981
7982     return ntStatus;
7983 }
7984
7985 NTSTATUS
7986 AFSGetObjectStatus( IN AFSGetStatusInfoCB *GetStatusInfo,
7987                     IN ULONG InputBufferLength,
7988                     IN AFSStatusInfoCB *StatusInfo,
7989                     OUT ULONG *ReturnLength)
7990 {
7991
7992     NTSTATUS ntStatus = STATUS_SUCCESS;
7993     AFSFcb   *pFcb = NULL;
7994     AFSVolumeCB *pVolumeCB = NULL;
7995     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
7996     AFSObjectInfoCB *pObjectInfo = NULL;
7997     ULONGLONG   ullIndex = 0;
7998     UNICODE_STRING uniFullPathName, uniRemainingPath, uniComponentName, uniParsedName;
7999     AFSNameArrayHdr *pNameArray = NULL;
8000     AFSDirectoryCB *pDirectoryEntry = NULL, *pParentDirEntry = NULL;
8001     LONG lCount;
8002
8003     __Enter
8004     {
8005
8006         //
8007         // If we are given a FID then look up the entry by that, otherwise
8008         // do it by name
8009         //
8010
8011         if( GetStatusInfo->FileID.Cell != 0 &&
8012             GetStatusInfo->FileID.Volume != 0 &&
8013             GetStatusInfo->FileID.Vnode != 0 &&
8014             GetStatusInfo->FileID.Unique != 0)
8015         {
8016
8017             AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
8018
8019             //
8020             // Locate the volume node
8021             //
8022
8023             ullIndex = AFSCreateHighIndex( &GetStatusInfo->FileID);
8024
8025             ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
8026                                            ullIndex,
8027                                            (AFSBTreeEntry **)&pVolumeCB);
8028
8029             if( pVolumeCB != NULL)
8030             {
8031
8032                 lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
8033
8034                 AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8035                               AFS_TRACE_LEVEL_VERBOSE,
8036                               "AFSGetObjectStatus Increment count on volume %08lX Cnt %d\n",
8037                               pVolumeCB,
8038                               lCount);
8039             }
8040
8041             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
8042
8043             if( !NT_SUCCESS( ntStatus) ||
8044                 pVolumeCB == NULL)
8045             {
8046                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
8047             }
8048
8049             if( AFSIsVolumeFID( &GetStatusInfo->FileID))
8050             {
8051
8052                 pObjectInfo = &pVolumeCB->ObjectInformation;
8053
8054                 lCount = InterlockedIncrement( &pObjectInfo->ObjectReferenceCount);
8055
8056                 lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
8057             }
8058             else
8059             {
8060
8061                 AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
8062                                   TRUE);
8063
8064                 lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
8065
8066                 AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8067                               AFS_TRACE_LEVEL_VERBOSE,
8068                               "AFSGetObjectStatus Decrement count on volume %08lX Cnt %d\n",
8069                               pVolumeCB,
8070                               lCount);
8071
8072                 ullIndex = AFSCreateLowIndex( &GetStatusInfo->FileID);
8073
8074                 ntStatus = AFSLocateHashEntry( pVolumeCB->ObjectInfoTree.TreeHead,
8075                                                ullIndex,
8076                                                (AFSBTreeEntry **)&pObjectInfo);
8077
8078                 if( pObjectInfo != NULL)
8079                 {
8080
8081                     //
8082                     // Reference the node so it won't be torn down
8083                     //
8084
8085                     lCount = InterlockedIncrement( &pObjectInfo->ObjectReferenceCount);
8086
8087                     AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
8088                                   AFS_TRACE_LEVEL_VERBOSE,
8089                                   "AFSGetObjectStatus Increment count on object %08lX Cnt %d\n",
8090                                   pObjectInfo,
8091                                   lCount);
8092                 }
8093
8094                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
8095
8096                 if( !NT_SUCCESS( ntStatus) ||
8097                     pObjectInfo == NULL)
8098                 {
8099                     try_return( ntStatus = STATUS_INVALID_PARAMETER);
8100                 }
8101             }
8102         }
8103         else
8104         {
8105
8106             if( GetStatusInfo->FileNameLength == 0 ||
8107                 InputBufferLength < (ULONG)(FIELD_OFFSET( AFSGetStatusInfoCB, FileName) + GetStatusInfo->FileNameLength))
8108             {
8109                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
8110             }
8111
8112             uniFullPathName.Length = GetStatusInfo->FileNameLength;
8113             uniFullPathName.MaximumLength = uniFullPathName.Length;
8114
8115             uniFullPathName.Buffer = (WCHAR *)GetStatusInfo->FileName;
8116
8117             //
8118             // This name should begin with the \afs server so parse it off and check it
8119             //
8120
8121             FsRtlDissectName( uniFullPathName,
8122                               &uniComponentName,
8123                               &uniRemainingPath);
8124
8125             if( RtlCompareUnicodeString( &uniComponentName,
8126                                          &AFSServerName,
8127                                          TRUE) != 0)
8128             {
8129                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
8130                               AFS_TRACE_LEVEL_ERROR,
8131                               "AFSGetObjectStatus Name %wZ contains invalid server name\n",
8132                               &uniFullPathName);
8133
8134                 try_return( ntStatus = STATUS_OBJECT_PATH_INVALID);
8135             }
8136
8137             uniFullPathName = uniRemainingPath;
8138
8139             uniParsedName = uniFullPathName;
8140
8141             //
8142             // Our name array
8143             //
8144
8145             pNameArray = AFSInitNameArray( AFSGlobalRoot->DirectoryCB,
8146                                            0);
8147
8148             if( pNameArray == NULL)
8149             {
8150                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8151             }
8152
8153             pVolumeCB = AFSGlobalRoot;
8154
8155             pParentDirEntry = AFSGlobalRoot->DirectoryCB;
8156
8157             //
8158             // Increment the ref count on the volume and dir entry for correct processing below
8159             //
8160
8161             lCount = InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
8162
8163             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8164                           AFS_TRACE_LEVEL_VERBOSE,
8165                           "AFSGetObjectStatus Increment count on volume %08lX Cnt %d\n",
8166                           pVolumeCB,
8167                           lCount);
8168
8169             lCount = InterlockedIncrement( &pParentDirEntry->OpenReferenceCount);
8170
8171             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8172                           AFS_TRACE_LEVEL_VERBOSE,
8173                           "AFSGetObjectStatus Increment count on %wZ DE %p Ccb %p Cnt %d\n",
8174                           &pParentDirEntry->NameInformation.FileName,
8175                           pParentDirEntry,
8176                           NULL,
8177                           lCount);
8178
8179             ntStatus = AFSLocateNameEntry( NULL,
8180                                            NULL,
8181                                            &uniFullPathName,
8182                                            &uniParsedName,
8183                                            pNameArray,
8184                                            AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL |
8185                                                         AFS_LOCATE_FLAGS_NO_SL_TARGET_EVAL,
8186                                            &pVolumeCB,
8187                                            &pParentDirEntry,
8188                                            &pDirectoryEntry,
8189                                            NULL);
8190
8191             if( !NT_SUCCESS( ntStatus))
8192             {
8193
8194                 //
8195                 // The volume lock was released on failure above
8196                 // Except for STATUS_OBJECT_NAME_NOT_FOUND
8197                 //
8198
8199                 if( ntStatus == STATUS_OBJECT_NAME_NOT_FOUND)
8200                 {
8201
8202                     if( pVolumeCB != NULL)
8203                     {
8204
8205                         lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
8206
8207                         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8208                                       AFS_TRACE_LEVEL_VERBOSE,
8209                                       "AFSGetObjectStatus Decrement count on volume %08lX Cnt %d\n",
8210                                       pVolumeCB,
8211                                       lCount);
8212                     }
8213
8214                     if( pDirectoryEntry != NULL)
8215                     {
8216
8217                         lCount = InterlockedDecrement( &pDirectoryEntry->OpenReferenceCount);
8218
8219                         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8220                                       AFS_TRACE_LEVEL_VERBOSE,
8221                                       "AFSGetObjectStatus Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
8222                                       &pDirectoryEntry->NameInformation.FileName,
8223                                       pDirectoryEntry,
8224                                       NULL,
8225                                       lCount);
8226                     }
8227                     else
8228                     {
8229
8230                         lCount = InterlockedDecrement( &pParentDirEntry->OpenReferenceCount);
8231
8232                         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
8233                                       AFS_TRACE_LEVEL_VERBOSE,
8234                                       "AFSGetObjectStatus Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
8235                                       &pParentDirEntry->NameInformation.FileName,
8236                                       pParentDirEntry,
8237                                       NULL,
8238                                       lCount);
8239                     }
8240                 }
8241
8242                 pVolumeCB = NULL;
8243
8244                 try_return( ntStatus);
8245             }
8246
8247             //
8248             // Remove the reference made above
8249             //
8250
8251             lCount = InterlockedDecrement( &pDirectoryEntry->OpenReferenceCount);
8252
8253             pObjectInfo = pDirectoryEntry->ObjectInformation;
8254
8255             lCount = InterlockedIncrement( &pObjectInfo->ObjectReferenceCount);
8256
8257             if( pVolumeCB != NULL)
8258             {
8259
8260                 lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
8261
8262                 AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
8263                               AFS_TRACE_LEVEL_VERBOSE,
8264                               "AFSRetrieveFileAttributes Decrement2 count on volume %08lX Cnt %d\n",
8265                               pVolumeCB,
8266                               pVolumeCB->VolumeReferenceCount);
8267             }
8268         }
8269
8270         //
8271         // At this point we have an object info block, return the information
8272         //
8273
8274         StatusInfo->FileId = pObjectInfo->FileId;
8275
8276         StatusInfo->TargetFileId = pObjectInfo->TargetFileId;
8277
8278         StatusInfo->Expiration = pObjectInfo->Expiration;
8279
8280         StatusInfo->DataVersion = pObjectInfo->DataVersion;
8281
8282         StatusInfo->FileType = pObjectInfo->FileType;
8283
8284         StatusInfo->ObjectFlags = pObjectInfo->Flags;
8285
8286         StatusInfo->CreationTime = pObjectInfo->CreationTime;
8287
8288         StatusInfo->LastAccessTime = pObjectInfo->LastAccessTime;
8289
8290         StatusInfo->LastWriteTime = pObjectInfo->LastWriteTime;
8291
8292         StatusInfo->ChangeTime = pObjectInfo->ChangeTime;
8293
8294         StatusInfo->FileAttributes = pObjectInfo->FileAttributes;
8295
8296         StatusInfo->EndOfFile = pObjectInfo->EndOfFile;
8297
8298         StatusInfo->AllocationSize = pObjectInfo->AllocationSize;
8299
8300         StatusInfo->EaSize = pObjectInfo->EaSize;
8301
8302         StatusInfo->Links = pObjectInfo->Links;
8303
8304         //
8305         // Return the information length
8306         //
8307
8308         *ReturnLength = sizeof( AFSStatusInfoCB);
8309
8310 try_exit:
8311
8312         if( pObjectInfo != NULL)
8313         {
8314
8315             lCount = InterlockedDecrement( &pObjectInfo->ObjectReferenceCount);
8316         }
8317
8318         if( pNameArray != NULL)
8319         {
8320
8321             AFSFreeNameArray( pNameArray);
8322         }
8323     }
8324
8325     return ntStatus;
8326 }
8327
8328 NTSTATUS
8329 AFSCheckSymlinkAccess( IN AFSDirectoryCB *ParentDirectoryCB,
8330                        IN UNICODE_STRING *ComponentName)
8331 {
8332
8333     NTSTATUS ntStatus = STATUS_SUCCESS;
8334     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
8335     AFSDirectoryCB *pDirEntry = NULL;
8336     ULONG ulCRC = 0;
8337     LONG lCount;
8338
8339     __Enter
8340     {
8341
8342         //
8343         // Search for the entry in the parent
8344         //
8345
8346         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
8347                       AFS_TRACE_LEVEL_VERBOSE_2,
8348                       "AFSCheckSymlinkAccess Searching for entry %wZ case sensitive\n",
8349                       ComponentName);
8350
8351         ulCRC = AFSGenerateCRC( ComponentName,
8352                                 FALSE);
8353
8354         AFSAcquireShared( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
8355                           TRUE);
8356
8357         AFSLocateCaseSensitiveDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
8358                                         ulCRC,
8359                                         &pDirEntry);
8360
8361         if( pDirEntry == NULL)
8362         {
8363
8364             //
8365             // Missed so perform a case insensitive lookup
8366             //
8367
8368             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
8369                           AFS_TRACE_LEVEL_VERBOSE_2,
8370                           "AFSCheckSymlinkAccess Searching for entry %wZ case insensitive\n",
8371                           ComponentName);
8372
8373             ulCRC = AFSGenerateCRC( ComponentName,
8374                                     TRUE);
8375
8376             AFSLocateCaseInsensitiveDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
8377                                               ulCRC,
8378                                               &pDirEntry);
8379
8380             if( pDirEntry == NULL)
8381             {
8382
8383                 //
8384                 // OK, if this component is a valid short name then try
8385                 // a lookup in the short name tree
8386                 //
8387
8388                 if( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
8389                     RtlIsNameLegalDOS8Dot3( ComponentName,
8390                                             NULL,
8391                                             NULL))
8392                 {
8393
8394                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
8395                                   AFS_TRACE_LEVEL_VERBOSE_2,
8396                                   "AFSCheckSymlinkAccess Searching for entry %wZ short name\n",
8397                                   ComponentName);
8398
8399                     AFSLocateShortNameDirEntry( ParentDirectoryCB->ObjectInformation->Specific.Directory.ShortNameTree,
8400                                                 ulCRC,
8401                                                 &pDirEntry);
8402                 }
8403             }
8404         }
8405
8406         if( pDirEntry != NULL)
8407         {
8408             lCount = InterlockedIncrement( &pDirEntry->OpenReferenceCount);
8409         }
8410
8411         AFSReleaseResource( ParentDirectoryCB->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
8412
8413         if( pDirEntry == NULL)
8414         {
8415
8416             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
8417                           AFS_TRACE_LEVEL_VERBOSE_2,
8418                           "AFSCheckSymlinkAccess Failed to locate entry %wZ\n",
8419                           ComponentName);
8420
8421             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
8422         }
8423
8424         //
8425         // We have the symlink object but previously failed to process it so return access
8426         // denied.
8427         //
8428
8429         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
8430                       AFS_TRACE_LEVEL_VERBOSE_2,
8431                       "AFSCheckSymlinkAccess Failing symlink access to entry %wZ REPARSE_POINT_NOT_RESOLVED\n",
8432                       ComponentName);
8433
8434         ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
8435
8436         lCount = InterlockedDecrement( &pDirEntry->OpenReferenceCount);
8437
8438 try_exit:
8439
8440         NOTHING;
8441     }
8442
8443     return ntStatus;
8444 }
8445
8446 NTSTATUS
8447 AFSRetrieveFinalComponent( IN UNICODE_STRING *FullPathName,
8448                            OUT UNICODE_STRING *ComponentName)
8449 {
8450
8451     NTSTATUS ntStatus = STATUS_SUCCESS;
8452     UNICODE_STRING uniFullPathName, uniRemainingPath, uniComponentName;
8453
8454     uniFullPathName = *FullPathName;
8455
8456     while( TRUE)
8457     {
8458
8459         FsRtlDissectName( uniFullPathName,
8460                           &uniComponentName,
8461                           &uniRemainingPath);
8462
8463         if( uniRemainingPath.Length == 0)
8464         {
8465             break;
8466         }
8467
8468         uniFullPathName = uniRemainingPath;
8469     }
8470
8471     if( uniComponentName.Length > 0)
8472     {
8473         *ComponentName = uniComponentName;
8474     }
8475
8476     return ntStatus;
8477 }
8478
8479 void
8480 AFSDumpTraceFiles_Default()
8481 {
8482     return;
8483 }
8484
8485 BOOLEAN
8486 AFSValidNameFormat( IN UNICODE_STRING *FileName)
8487 {
8488
8489     BOOLEAN bIsValidName = TRUE;
8490     USHORT usIndex = 0;
8491
8492     __Enter
8493     {
8494
8495         while( usIndex < FileName->Length/sizeof( WCHAR))
8496         {
8497
8498             if( FileName->Buffer[ usIndex] == L':' ||
8499                 FileName->Buffer[ usIndex] == L'*' ||
8500                 FileName->Buffer[ usIndex] == L'?' ||
8501                 FileName->Buffer[ usIndex] == L'"' ||
8502                 FileName->Buffer[ usIndex] == L'<' ||
8503                 FileName->Buffer[ usIndex] == L'>')
8504             {
8505                 bIsValidName = FALSE;
8506                 break;
8507             }
8508
8509             usIndex++;
8510         }
8511     }
8512
8513     return bIsValidName;
8514 }
8515
8516 NTSTATUS
8517 AFSCreateDefaultSecurityDescriptor()
8518 {
8519
8520     NTSTATUS ntStatus = STATUS_SUCCESS;
8521     PACL pSACL = NULL;
8522     ULONG ulSACLSize = 0;
8523     SYSTEM_MANDATORY_LABEL_ACE* pACE = NULL;
8524     ULONG ulACESize = 0;
8525     SECURITY_DESCRIPTOR *pSecurityDescr = NULL;
8526     ULONG ulSDLength = 0;
8527     SECURITY_DESCRIPTOR *pRelativeSecurityDescr = NULL;
8528     PSID pWorldSID = NULL;
8529     ULONG *pulSubAuthority = NULL;
8530     ULONG ulWorldSIDLEngth = 0;
8531
8532     __Enter
8533     {
8534
8535         ulWorldSIDLEngth = RtlLengthRequiredSid( 1);
8536
8537         pWorldSID = (PSID)ExAllocatePoolWithTag( PagedPool,
8538                                                  ulWorldSIDLEngth,
8539                                                  AFS_GENERIC_MEMORY_29_TAG);
8540
8541         if( pWorldSID == NULL)
8542         {
8543             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate World SID\n");
8544             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8545         }
8546
8547         RtlZeroMemory( pWorldSID,
8548                        ulWorldSIDLEngth);
8549
8550         RtlInitializeSid( pWorldSID,
8551                           &SeWorldSidAuthority,
8552                           1);
8553
8554         pulSubAuthority = RtlSubAuthoritySid(pWorldSID, 0);
8555         *pulSubAuthority = SECURITY_WORLD_RID;
8556
8557         if( AFSRtlSetSaclSecurityDescriptor == NULL)
8558         {
8559
8560             AFSPrint( "AFSCreateDefaultSecurityDescriptor AFSRtlSetSaclSecurityDescriptor == NULL\n");
8561         }
8562         else
8563         {
8564
8565             ulACESize = sizeof( SYSTEM_MANDATORY_LABEL_ACE) + 128;
8566
8567             pACE = (SYSTEM_MANDATORY_LABEL_ACE *)ExAllocatePoolWithTag( PagedPool,
8568                                                                         ulACESize,
8569                                                                         AFS_GENERIC_MEMORY_29_TAG);
8570
8571             if( pACE == NULL)
8572             {
8573
8574                 AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_29_TAG\n");
8575
8576                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8577             }
8578
8579             RtlZeroMemory( pACE,
8580                            ulACESize);
8581
8582             pACE->Header.AceFlags = OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE;
8583             pACE->Header.AceType = SYSTEM_MANDATORY_LABEL_ACE_TYPE;
8584             pACE->Header.AceSize = FIELD_OFFSET( SYSTEM_MANDATORY_LABEL_ACE, SidStart) + (USHORT)RtlLengthSid( SeExports->SeLowMandatorySid);
8585             pACE->Mask = SYSTEM_MANDATORY_LABEL_NO_WRITE_UP;
8586
8587             RtlCopySid( RtlLengthSid( SeExports->SeLowMandatorySid),
8588                         &pACE->SidStart,
8589                         SeExports->SeLowMandatorySid);
8590
8591             ulSACLSize = sizeof(ACL) + RtlLengthSid( SeExports->SeLowMandatorySid) +
8592                 FIELD_OFFSET( SYSTEM_MANDATORY_LABEL_ACE, SidStart) + ulACESize;
8593
8594             pSACL = (PACL)ExAllocatePoolWithTag( PagedPool,
8595                                                  ulSACLSize,
8596                                                  AFS_GENERIC_MEMORY_29_TAG);
8597
8598             if( pSACL == NULL)
8599             {
8600
8601                 AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_29_TAG\n");
8602
8603                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8604             }
8605
8606             ntStatus = RtlCreateAcl( pSACL,
8607                                      ulSACLSize,
8608                                      ACL_REVISION);
8609
8610             if( !NT_SUCCESS( ntStatus))
8611             {
8612
8613                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlCreateAcl ntStatus %08lX\n",
8614                           ntStatus);
8615
8616                 try_return( ntStatus);
8617             }
8618
8619             ntStatus = RtlAddAce( pSACL,
8620                                   ACL_REVISION,
8621                                   0,
8622                                   pACE,
8623                                   pACE->Header.AceSize);
8624
8625             if( !NT_SUCCESS( ntStatus))
8626             {
8627
8628                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlAddAce ntStatus %08lX\n",
8629                           ntStatus);
8630
8631                 try_return( ntStatus);
8632             }
8633         }
8634
8635         pSecurityDescr = (SECURITY_DESCRIPTOR *)ExAllocatePoolWithTag( NonPagedPool,
8636                                                                        sizeof( SECURITY_DESCRIPTOR),
8637                                                                        AFS_GENERIC_MEMORY_27_TAG);
8638
8639         if( pSecurityDescr == NULL)
8640         {
8641
8642             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_27_TAG\n");
8643
8644             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8645         }
8646
8647         ntStatus = RtlCreateSecurityDescriptor( pSecurityDescr,
8648                                                 SECURITY_DESCRIPTOR_REVISION);
8649
8650         if( !NT_SUCCESS( ntStatus))
8651         {
8652
8653             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlCreateSecurityDescriptor ntStatus %08lX\n",
8654                       ntStatus);
8655
8656             try_return( ntStatus);
8657         }
8658
8659         if( AFSRtlSetSaclSecurityDescriptor != NULL)
8660         {
8661             ntStatus = AFSRtlSetSaclSecurityDescriptor( pSecurityDescr,
8662                                                         TRUE,
8663                                                         pSACL,
8664                                                         FALSE);
8665
8666             if( !NT_SUCCESS( ntStatus))
8667             {
8668
8669                 AFSPrint( "AFSCreateDefaultSecurityDescriptor AFSRtlSetSaclSecurityDescriptor ntStatus %08lX\n",
8670                           ntStatus);
8671
8672                 try_return( ntStatus);
8673             }
8674         }
8675
8676         //
8677         // Add in the group and owner to the SD
8678         //
8679
8680         if( AFSRtlSetGroupSecurityDescriptor != NULL)
8681         {
8682             ntStatus = AFSRtlSetGroupSecurityDescriptor( pSecurityDescr,
8683                                                          pWorldSID,
8684                                                          FALSE);
8685
8686             if( !NT_SUCCESS( ntStatus))
8687             {
8688
8689                 AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlSetGroupSecurityDescriptor failed ntStatus %08lX\n",
8690                           ntStatus);
8691
8692                 try_return( ntStatus);
8693             }
8694         }
8695
8696         ntStatus = RtlSetOwnerSecurityDescriptor( pSecurityDescr,
8697                                                   pWorldSID,
8698                                                   FALSE);
8699
8700         if( !NT_SUCCESS( ntStatus))
8701         {
8702
8703             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlSetOwnerSecurityDescriptor failed ntStatus %08lX\n",
8704                       ntStatus);
8705
8706             try_return( ntStatus);
8707         }
8708
8709         if( !RtlValidSecurityDescriptor( pSecurityDescr))
8710         {
8711
8712             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlValidSecurityDescriptor NOT\n");
8713
8714             try_return( ntStatus = STATUS_INVALID_PARAMETER);
8715         }
8716
8717         pRelativeSecurityDescr = (SECURITY_DESCRIPTOR *)ExAllocatePoolWithTag( NonPagedPool,
8718                                                                                PAGE_SIZE,
8719                                                                                AFS_GENERIC_MEMORY_27_TAG);
8720
8721         if( pRelativeSecurityDescr == NULL)
8722         {
8723
8724             AFSPrint( "AFSCreateDefaultSecurityDescriptor unable to allocate AFS_GENERIC_MEMORY_27_TAG\n");
8725
8726             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
8727         }
8728
8729         ulSDLength = PAGE_SIZE;
8730
8731         ntStatus = RtlAbsoluteToSelfRelativeSD( pSecurityDescr,
8732                                                 pRelativeSecurityDescr,
8733                                                 &ulSDLength);
8734
8735         if( !NT_SUCCESS( ntStatus))
8736         {
8737
8738             AFSPrint( "AFSCreateDefaultSecurityDescriptor RtlAbsoluteToSelfRelativeSD ntStatus %08lX\n",
8739                       ntStatus);
8740
8741             try_return( ntStatus);
8742         }
8743
8744         AFSDefaultSD = pRelativeSecurityDescr;
8745
8746 try_exit:
8747
8748         if( !NT_SUCCESS( ntStatus))
8749         {
8750
8751             if( pRelativeSecurityDescr != NULL)
8752             {
8753                 ExFreePool( pRelativeSecurityDescr);
8754             }
8755         }
8756
8757         if( pSecurityDescr != NULL)
8758         {
8759             ExFreePool( pSecurityDescr);
8760         }
8761
8762         if( pSACL != NULL)
8763         {
8764             ExFreePool( pSACL);
8765         }
8766
8767         if( pACE != NULL)
8768         {
8769             ExFreePool( pACE);
8770         }
8771
8772         if( pWorldSID != NULL)
8773         {
8774             ExFreePool( pWorldSID);
8775         }
8776     }
8777
8778     return ntStatus;
8779 }
8780
8781 void
8782 AFSRetrieveParentPath( IN UNICODE_STRING *FullFileName,
8783                        OUT UNICODE_STRING *ParentPath)
8784 {
8785
8786     USHORT usIndex = 0;
8787
8788     *ParentPath = *FullFileName;
8789
8790     //
8791     // If the final character is a \, jump over it
8792     //
8793
8794     if( ParentPath->Buffer[ (ParentPath->Length/sizeof( WCHAR)) - 1] == L'\\')
8795     {
8796         ParentPath->Length -= sizeof( WCHAR);
8797     }
8798
8799     while( ParentPath->Buffer[ (ParentPath->Length/sizeof( WCHAR)) - 1] != L'\\')
8800     {
8801         ParentPath->Length -= sizeof( WCHAR);
8802     }
8803
8804     //
8805     // And the separator
8806     //
8807
8808     ParentPath->Length -= sizeof( WCHAR);
8809
8810     return;
8811 }
8812
8813 NTSTATUS
8814 AFSRetrieveValidAuthGroup( IN AFSFcb *Fcb,
8815                            IN AFSObjectInfoCB *ObjectInfo,
8816                            IN BOOLEAN WriteAccess,
8817                            OUT GUID *AuthGroup)
8818 {
8819
8820     NTSTATUS ntStatus = STATUS_SUCCESS;
8821     GUID     stAuthGroup, stZeroAuthGroup;
8822     BOOLEAN  bFoundAuthGroup = FALSE;
8823     AFSCcb  *pCcb = NULL;
8824     AFSFcb *pFcb = Fcb;
8825
8826     __Enter
8827     {
8828
8829         RtlZeroMemory( &stAuthGroup,
8830                        sizeof( GUID));
8831
8832         RtlZeroMemory( &stZeroAuthGroup,
8833                        sizeof( GUID));
8834
8835         if( Fcb == NULL)
8836         {
8837
8838             if( ObjectInfo != NULL &&
8839                 ObjectInfo->Fcb != NULL)
8840             {
8841                 pFcb = ObjectInfo->Fcb;
8842             }
8843         }
8844
8845         if( pFcb != NULL)
8846         {
8847
8848             AFSAcquireShared( &Fcb->NPFcb->CcbListLock,
8849                               TRUE);
8850
8851             pCcb = Fcb->CcbListHead;
8852
8853             while( pCcb != NULL)
8854             {
8855
8856                 if( WriteAccess &&
8857                     pCcb->GrantedAccess & FILE_WRITE_DATA)
8858                 {
8859                     RtlCopyMemory( &stAuthGroup,
8860                                    &pCcb->AuthGroup,
8861                                    sizeof( GUID));
8862
8863                     bFoundAuthGroup = TRUE;
8864
8865                     break;
8866                 }
8867                 else if( pCcb->GrantedAccess & FILE_READ_DATA)
8868                 {
8869                     //
8870                     // At least get the read-only access
8871                     //
8872
8873                     RtlCopyMemory( &stAuthGroup,
8874                                    &pCcb->AuthGroup,
8875                                    sizeof( GUID));
8876
8877                     bFoundAuthGroup = TRUE;
8878                 }
8879
8880                 pCcb = (AFSCcb *)pCcb->ListEntry.fLink;
8881             }
8882
8883             AFSReleaseResource( &Fcb->NPFcb->CcbListLock);
8884         }
8885
8886         if( !bFoundAuthGroup)
8887         {
8888
8889             AFSRetrieveAuthGroupFnc( (ULONGLONG)PsGetCurrentProcessId(),
8890                                      (ULONGLONG)PsGetCurrentThreadId(),
8891                                       &stAuthGroup);
8892
8893             if( RtlCompareMemory( &stZeroAuthGroup,
8894                                   &stAuthGroup,
8895                                   sizeof( GUID)) == sizeof( GUID))
8896             {
8897
8898                 DbgPrint("AFSRetrieveValidAuthGroup Failed to locate PAG\n");
8899
8900                 try_return( ntStatus = STATUS_ACCESS_DENIED);
8901             }
8902         }
8903
8904         RtlCopyMemory( AuthGroup,
8905                        &stAuthGroup,
8906                        sizeof( GUID));
8907
8908 try_exit:
8909
8910         NOTHING;
8911     }
8912
8913     return ntStatus;
8914 }
8915
8916 NTSTATUS
8917 AFSPerformObjectInvalidate( IN AFSObjectInfoCB *ObjectInfo,
8918                             IN ULONG InvalidateReason)
8919 {
8920
8921     NTSTATUS            ntStatus = STATUS_SUCCESS;
8922     IO_STATUS_BLOCK     stIoStatus;
8923     LIST_ENTRY         *le;
8924     AFSExtent          *pEntry;
8925     ULONG               ulProcessCount = 0;
8926     ULONG               ulCount = 0;
8927
8928     __Enter
8929     {
8930
8931         switch( InvalidateReason)
8932         {
8933
8934             case AFS_INVALIDATE_DELETED:
8935             {
8936
8937                 if( ObjectInfo->FileType == AFS_FILE_TYPE_FILE &&
8938                     ObjectInfo->Fcb != NULL)
8939                 {
8940
8941                     AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
8942                                     TRUE);
8943
8944                     ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
8945
8946                     KeSetEvent( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
8947                                 0,
8948                                 FALSE);
8949
8950                     //
8951                     // Clear out the extents
8952                     // And get rid of them (note this involves waiting
8953                     // for any writes or reads to the cache to complete)
8954                     //
8955
8956                     AFSTearDownFcbExtents( ObjectInfo->Fcb,
8957                                            NULL);
8958
8959                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
8960                 }
8961
8962                 break;
8963             }
8964
8965             case AFS_INVALIDATE_DATA_VERSION:
8966             {
8967
8968                 LARGE_INTEGER liCurrentOffset = {0,0};
8969                 LARGE_INTEGER liFlushLength = {0,0};
8970                 ULONG ulFlushLength = 0;
8971                 BOOLEAN bLocked = FALSE;
8972                 BOOLEAN bExtentsLocked = FALSE;
8973                 BOOLEAN bCleanExtents = FALSE;
8974
8975                 if( ObjectInfo->FileType == AFS_FILE_TYPE_FILE &&
8976                     ObjectInfo->Fcb != NULL)
8977                 {
8978
8979                     AFSAcquireExcl( &ObjectInfo->Fcb->NPFcb->Resource,
8980                                     TRUE);
8981
8982                     bLocked = TRUE;
8983
8984                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
8985                                   AFS_TRACE_LEVEL_VERBOSE,
8986                                   "AFSPerformObjectInvalidate Acquiring Fcb extents lock %08lX SHARED %08lX\n",
8987                                   &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
8988                                   PsGetCurrentThread());
8989
8990                     AFSAcquireShared( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
8991                                       TRUE);
8992
8993                     bExtentsLocked = TRUE;
8994
8995                     //
8996                     // There are several possibilities here:
8997                     //
8998                     // 0. If there are no extents or all of the extents are dirty, do nothing.
8999                     //
9000                     // 1. There could be nothing dirty and an open reference count of zero
9001                     //    in which case we can just tear down all of the extents without
9002                     //    holding any resources.
9003                     //
9004                     // 2. There could be nothing dirty and a non-zero open reference count
9005                     //    in which case we can issue a CcPurge against the entire file
9006                     //    while holding just the Fcb Resource.
9007                     //
9008                     // 3. There can be dirty extents in which case we need to identify
9009                     //    the non-dirty ranges and then perform a CcPurge on just the
9010                     //    non-dirty ranges while holding just the Fcb Resource.
9011                     //
9012
9013                     if ( ObjectInfo->Fcb->Specific.File.ExtentCount != ObjectInfo->Fcb->Specific.File.ExtentsDirtyCount)
9014                     {
9015
9016                         if ( ObjectInfo->Fcb->Specific.File.ExtentsDirtyCount == 0)
9017                         {
9018
9019                             if ( ObjectInfo->Fcb->OpenReferenceCount == 0)
9020                             {
9021
9022                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9023
9024                                 bExtentsLocked = FALSE;
9025
9026                                 AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9027
9028                                 bLocked = FALSE;
9029
9030                                 AFSTearDownFcbExtents( ObjectInfo->Fcb,
9031                                                        NULL);
9032                             }
9033                             else
9034                             {
9035
9036                                 __try
9037                                 {
9038
9039                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9040
9041                                     bExtentsLocked = FALSE;
9042
9043                                     if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9044                                                               NULL,
9045                                                               0,
9046                                                               FALSE))
9047                                     {
9048
9049                                         AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
9050                                                       AFS_TRACE_LEVEL_WARNING,
9051                                                       "AFSPerformObjectInvalidation CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9052                                                       ObjectInfo->FileId.Cell,
9053                                                       ObjectInfo->FileId.Volume,
9054                                                       ObjectInfo->FileId.Vnode,
9055                                                       ObjectInfo->FileId.Unique);
9056
9057                                         SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9058                                     }
9059                                     else
9060                                     {
9061
9062                                         bCleanExtents = TRUE;
9063                                     }
9064                                 }
9065                                 __except( EXCEPTION_EXECUTE_HANDLER)
9066                                 {
9067
9068                                     ntStatus = GetExceptionCode();
9069
9070                                     AFSDbgLogMsg( 0,
9071                                                   0,
9072                                                   "EXCEPTION - AFSPerformObjectInvalidation FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
9073                                                   ObjectInfo->FileId.Cell,
9074                                                   ObjectInfo->FileId.Volume,
9075                                                   ObjectInfo->FileId.Vnode,
9076                                                   ObjectInfo->FileId.Unique,
9077                                                   ntStatus);
9078
9079                                     SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9080                                 }
9081                             }
9082                         }
9083                         else
9084                         {
9085
9086                             //
9087                             // Must build a list of non-dirty ranges from the beginning of the file
9088                             // to the end.  There can be at most (Fcb->Specific.File.ExtentsDirtyCount + 1)
9089                             // ranges.  In all but the most extreme random data write scenario there will
9090                             // be significantly fewer.
9091                             //
9092                             // For each range we need offset and size.
9093                             //
9094
9095                             AFSByteRange * ByteRangeList = NULL;
9096                             ULONG          ulByteRangeCount = 0;
9097                             ULONG          ulIndex;
9098                             BOOLEAN        bPurgeOnClose = FALSE;
9099
9100                             __try
9101                             {
9102
9103                                 ulByteRangeCount = AFSConstructCleanByteRangeList( ObjectInfo->Fcb,
9104                                                                                    &ByteRangeList);
9105
9106                                 if ( ByteRangeList != NULL ||
9107                                      ulByteRangeCount == 0)
9108                                 {
9109
9110                                     AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9111
9112                                     bExtentsLocked = FALSE;
9113
9114                                     for ( ulIndex = 0; ulIndex < ulByteRangeCount; ulIndex++)
9115                                     {
9116
9117                                         ULONG ulSize;
9118
9119                                         do {
9120
9121                                             ulSize = ByteRangeList[ulIndex].Length.QuadPart > DWORD_MAX ? DWORD_MAX : ByteRangeList[ulIndex].Length.LowPart;
9122
9123                                             if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9124                                                                       &ByteRangeList[ulIndex].FileOffset,
9125                                                                       ulSize,
9126                                                                       FALSE))
9127                                             {
9128
9129                                                 AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
9130                                                               AFS_TRACE_LEVEL_WARNING,
9131                                                               "AFSPerformObjectInvalidation [1] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9132                                                               ObjectInfo->FileId.Cell,
9133                                                               ObjectInfo->FileId.Volume,
9134                                                               ObjectInfo->FileId.Vnode,
9135                                                               ObjectInfo->FileId.Unique);
9136
9137                                                 bPurgeOnClose = TRUE;
9138                                             }
9139                                             else
9140                                             {
9141
9142                                                 bCleanExtents = TRUE;
9143                                             }
9144
9145                                             ByteRangeList[ulIndex].Length.QuadPart -= ulSize;
9146
9147                                             ByteRangeList[ulIndex].FileOffset.QuadPart += ulSize;
9148
9149                                         } while ( ByteRangeList[ulIndex].Length.QuadPart > 0);
9150                                     }
9151                                 }
9152                                 else
9153                                 {
9154
9155                                     //
9156                                     // We couldn't allocate the memory to build the purge list
9157                                     // so just walk the extent list while holding the ExtentsList Resource.
9158                                     // This could deadlock but we do not have much choice.
9159                                     //
9160
9161                                     le = ObjectInfo->Fcb->Specific.File.ExtentsLists[AFS_EXTENTS_LIST].Flink;
9162
9163                                     ulProcessCount = 0;
9164
9165                                     ulCount = (ULONG)ObjectInfo->Fcb->Specific.File.ExtentCount;
9166
9167                                     if( ulCount > 0)
9168                                     {
9169                                         pEntry = ExtentFor( le, AFS_EXTENTS_LIST );
9170
9171                                         while( ulProcessCount < ulCount)
9172                                         {
9173                                             pEntry = ExtentFor( le, AFS_EXTENTS_LIST );
9174
9175                                             if( !BooleanFlagOn( pEntry->Flags, AFS_EXTENT_DIRTY))
9176                                             {
9177                                                 if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9178                                                                           &pEntry->FileOffset,
9179                                                                           pEntry->Size,
9180                                                                           FALSE))
9181                                                 {
9182
9183                                                     AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
9184                                                                   AFS_TRACE_LEVEL_WARNING,
9185                                                                   "AFSPerformObjectInvalidation [2] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9186                                                                   ObjectInfo->FileId.Cell,
9187                                                                   ObjectInfo->FileId.Volume,
9188                                                                   ObjectInfo->FileId.Vnode,
9189                                                                   ObjectInfo->FileId.Unique);
9190
9191                                                     bPurgeOnClose = TRUE;
9192                                                 }
9193                                                 else
9194                                                 {
9195
9196                                                     bCleanExtents = TRUE;
9197                                                 }
9198                                             }
9199
9200                                             if( liCurrentOffset.QuadPart < pEntry->FileOffset.QuadPart)
9201                                             {
9202
9203                                                 liFlushLength.QuadPart = pEntry->FileOffset.QuadPart - liCurrentOffset.QuadPart;
9204
9205                                                 while( liFlushLength.QuadPart > 0)
9206                                                 {
9207
9208                                                     if( liFlushLength.QuadPart > 512 * 1024000)
9209                                                     {
9210                                                         ulFlushLength = 512 * 1024000;
9211                                                     }
9212                                                     else
9213                                                     {
9214                                                         ulFlushLength = liFlushLength.LowPart;
9215                                                     }
9216
9217                                                     if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9218                                                                               &liCurrentOffset,
9219                                                                               ulFlushLength,
9220                                                                               FALSE))
9221                                                     {
9222
9223                                                         AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
9224                                                                       AFS_TRACE_LEVEL_WARNING,
9225                                                                       "AFSPerformObjectInvalidation [3] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9226                                                                       ObjectInfo->FileId.Cell,
9227                                                                       ObjectInfo->FileId.Volume,
9228                                                                       ObjectInfo->FileId.Vnode,
9229                                                                       ObjectInfo->FileId.Unique);
9230
9231                                                         bPurgeOnClose = TRUE;
9232                                                     }
9233                                                     else
9234                                                     {
9235
9236                                                         bCleanExtents = TRUE;
9237                                                     }
9238
9239                                                     liFlushLength.QuadPart -= ulFlushLength;
9240                                                 }
9241                                             }
9242
9243                                             liCurrentOffset.QuadPart = pEntry->FileOffset.QuadPart + pEntry->Size;
9244
9245                                             ulProcessCount++;
9246                                             le = le->Flink;
9247                                         }
9248                                     }
9249                                     else
9250                                     {
9251                                         if( !CcPurgeCacheSection( &ObjectInfo->Fcb->NPFcb->SectionObjectPointers,
9252                                                                   NULL,
9253                                                                   0,
9254                                                                   FALSE))
9255                                         {
9256
9257                                             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
9258                                                           AFS_TRACE_LEVEL_WARNING,
9259                                                           "AFSPerformObjectInvalidation [4] CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
9260                                                           ObjectInfo->FileId.Cell,
9261                                                           ObjectInfo->FileId.Volume,
9262                                                           ObjectInfo->FileId.Vnode,
9263                                                           ObjectInfo->FileId.Unique);
9264
9265                                             bPurgeOnClose = TRUE;
9266                                         }
9267                                         else
9268                                         {
9269
9270                                             bCleanExtents = TRUE;
9271                                         }
9272                                     }
9273
9274                                     if ( bPurgeOnClose)
9275                                     {
9276
9277                                         SetFlag( ObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
9278                                     }
9279                                 }
9280                             }
9281                             __except( EXCEPTION_EXECUTE_HANDLER)
9282                             {
9283
9284                                 ntStatus = GetExceptionCode();
9285
9286                                 AFSDbgLogMsg( 0,
9287                                               0,
9288                                               "EXCEPTION - AFSPerformObjectInvalidation FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
9289                                               ObjectInfo->FileId.Cell,
9290                                               ObjectInfo->FileId.Volume,
9291                                               ObjectInfo->FileId.Vnode,
9292                                               ObjectInfo->FileId.Unique,
9293                                               ntStatus);
9294                             }
9295                         }
9296                     }
9297
9298                     if ( bExtentsLocked)
9299                     {
9300
9301                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource );
9302                     }
9303
9304                     if ( bLocked)
9305                     {
9306
9307                         AFSReleaseResource( &ObjectInfo->Fcb->NPFcb->Resource);
9308                     }
9309
9310                     if ( bCleanExtents)
9311                     {
9312
9313                         AFSReleaseCleanExtents( ObjectInfo->Fcb,
9314                                                 NULL);
9315                     }
9316                 }
9317
9318                 break;
9319             }
9320         }
9321
9322         if( ObjectInfo != NULL)
9323         {
9324             InterlockedDecrement( &ObjectInfo->ObjectReferenceCount);
9325         }
9326     }
9327
9328     return ntStatus;
9329 }