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     UNREFERENCED_PARAMETER(Code);
  60     PEXCEPTION_RECORD ExceptRec;
  61     PCONTEXT Context;
  62
  63     __try
  64     {
  65
  66         ExceptRec = ExceptPtrs->ExceptionRecord;
  67
  68         Context = ExceptPtrs->ContextRecord;
  69
  70         AFSDbgLogMsg( 0,
  71                       0,
  72                       "AFSExceptionFilter (Library) - EXR %p CXR %p Function %s Code %08lX Address %p Routine %p\n",
  73                       ExceptRec,
  74                       Context,
  75                       FunctionString,
  76                       ExceptRec->ExceptionCode,
  77                       ExceptRec->ExceptionAddress,
  78                       (void *)AFSExceptionFilter);
  79
  80         DbgPrint("**** Exception Caught in AFS Redirector Library ****\n");
  81
  82         DbgPrint("\n\nPerform the following WnDbg Cmds:\n");
  83         DbgPrint("\n\t.exr %p ;  .cxr %p\n\n", ExceptRec, Context);
  84
  85         DbgPrint("**** Exception Complete from AFS Redirector Library ****\n");
  86
  87         if( BooleanFlagOn( AFSDebugFlags, AFS_DBG_BUGCHECK_EXCEPTION))
  88         {
  89
  90             KeBugCheck( (ULONG)-2);
  91         }
  92         else
  93         {
  94
  95             AFSBreakPoint();
  96         }
  97     }
  98     __except( EXCEPTION_EXECUTE_HANDLER)
  99     {
 100
 101         NOTHING;
 102     }
 103
 104     return EXCEPTION_EXECUTE_HANDLER;
 105 }
 106
 107 //
 108 // Function: AFSLibExAllocatePoolWithTag()
 109 //
 110 // Purpose: Allocate Pool Memory.  If BugCheck Exception flag
 111 //          is configured on, then bugcheck the system if
 112 //          a memory allocation fails.  The routine should be
 113 //          used for all memory allocations that are to be freed
 114 //          when the library is unloaded.  Memory allocations that
 115 //          are to survive library unload and reload should be
 116 //          performed using AFSExAllocatePoolWithTag() which is
 117 //          provided by the AFS Framework.
 118 //
 119 // Parameters:
 120 //                POOL_TYPE PoolType - Paged or NonPaged
 121 //                SIZE_T NumberOfBytes - requested allocation size
 122 //                ULONG  Tag - Pool Allocation Tag to be applied for tracking
 123 //
 124 // Return:
 125 //                void * - the memory allocation
 126 //
 127
 128 void *
 129 AFSLibExAllocatePoolWithTag( IN POOL_TYPE  PoolType,
 130                              IN SIZE_T  NumberOfBytes,
 131                              IN ULONG  Tag)
 132 {
 133
 134     void *pBuffer = NULL;
 135
 136     pBuffer = ExAllocatePoolWithTag( PoolType,
 137                                      NumberOfBytes,
 138                                      Tag);
 139
 140     if( pBuffer == NULL)
 141     {
 142
 143         if( BooleanFlagOn( AFSDebugFlags, AFS_DBG_BUGCHECK_EXCEPTION))
 144         {
 145
 146             KeBugCheck( (ULONG)-2);
 147         }
 148         else
 149         {
 150
 151             AFSDbgLogMsg( 0,
 152                           0,
 153                           "AFSLibExAllocatePoolWithTag failure Type %08lX Size %08lX Tag %08lX %08lX\n",
 154                           PoolType,
 155                           NumberOfBytes,
 156                           Tag,
 157                           PsGetCurrentThread());
 158
 159             AFSBreakPoint();
 160         }
 161     }
 162
 163     return pBuffer;
 164 }
 165
 166 //
 167 // Function: AFSAcquireExcl()
 168 //
 169 // Purpose: Called to acquire a resource exclusive with optional wait
 170 //
 171 // Parameters:
 172 //                PERESOURCE Resource - Resource to acquire
 173 //                BOOLEAN Wait - Whether to block
 174 //
 175 // Return:
 176 //                BOOLEAN - Whether the mask was acquired
 177 //
 178
 179 BOOLEAN
 180 AFSAcquireExcl( IN PERESOURCE Resource,
 181                 IN BOOLEAN wait)
 182 {
 183
 184     BOOLEAN bStatus = FALSE;
 185
 186     //
 187     // Normal kernel APCs must be disabled before calling
 188     // ExAcquireResourceExclusiveLite. Otherwise a bugcheck occurs.
 189     //
 190
 191     KeEnterCriticalRegion();
 192
 193     bStatus = ExAcquireResourceExclusiveLite( Resource,
 194                                               wait);
 195
 196     if( !bStatus)
 197     {
 198
 199         KeLeaveCriticalRegion();
 200     }
 201
 202     return bStatus;
 203 }
 204
 205 BOOLEAN
 206 AFSAcquireSharedStarveExclusive( IN PERESOURCE Resource,
 207                                  IN BOOLEAN Wait)
 208 {
 209
 210     BOOLEAN bStatus = FALSE;
 211
 212     KeEnterCriticalRegion();
 213
 214     bStatus = ExAcquireSharedStarveExclusive( Resource,
 215                                               Wait);
 216
 217     if( !bStatus)
 218     {
 219
 220         KeLeaveCriticalRegion();
 221     }
 222
 223     return bStatus;
 224 }
 225
 226 //
 227 // Function: AFSAcquireShared()
 228 //
 229 // Purpose: Called to acquire a resource shared with optional wait
 230 //
 231 // Parameters:
 232 //                PERESOURCE Resource - Resource to acquire
 233 //                BOOLEAN Wait - Whether to block
 234 //
 235 // Return:
 236 //                BOOLEAN - Whether the mask was acquired
 237 //
 238
 239 BOOLEAN
 240 AFSAcquireShared( IN PERESOURCE Resource,
 241                   IN BOOLEAN wait)
 242 {
 243
 244     BOOLEAN bStatus = FALSE;
 245
 246     KeEnterCriticalRegion();
 247
 248     bStatus = ExAcquireResourceSharedLite( Resource,
 249                                            wait);
 250
 251     if( !bStatus)
 252     {
 253
 254         KeLeaveCriticalRegion();
 255     }
 256
 257     return bStatus;
 258 }
 259
 260 //
 261 // Function: AFSReleaseResource()
 262 //
 263 // Purpose: Called to release a resource
 264 //
 265 // Parameters:
 266 //                PERESOURCE Resource - Resource to release
 267 //
 268 // Return:
 269 //                None
 270 //
 271
 272 void
 273 AFSReleaseResource( IN PERESOURCE Resource)
 274 {
 275
 276     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 277                   AFS_TRACE_LEVEL_VERBOSE,
 278                   "AFSReleaseResource Releasing lock %p Thread %08lX\n",
 279                   Resource,
 280                   PsGetCurrentThread());
 281
 282     ExReleaseResourceLite( Resource);
 283
 284     KeLeaveCriticalRegion();
 285
 286     return;
 287 }
 288
 289 void
 290 AFSConvertToShared( IN PERESOURCE Resource)
 291 {
 292
 293     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 294                   AFS_TRACE_LEVEL_VERBOSE,
 295                   "AFSConvertToShared Converting lock %p Thread %08lX\n",
 296                   Resource,
 297                   PsGetCurrentThread());
 298
 299     ExConvertExclusiveToSharedLite( Resource);
 300
 301     return;
 302 }
 303
 304 //
 305 // Function: AFSCompleteRequest
 306 //
 307 // Description:
 308 //
 309 //      This function completes irps
 310 //
 311 // Return:
 312 //
 313 //      A status is returned for the function
 314 //
 315
 316 void
 317 AFSCompleteRequest( IN PIRP Irp,
 318                     IN ULONG Status)
 319 {
 320
 321     Irp->IoStatus.Status = Status;
 322
 323     IoCompleteRequest( Irp,
 324                        IO_NO_INCREMENT);
 325
 326     return;
 327 }
 328
 329 //
 330 // Function: AFSGenerateCRC
 331 //
 332 // Description:
 333 //
 334 //      Given a device and filename this function generates a CRC
 335 //
 336 // Return:
 337 //
 338 //      A status is returned for the function
 339 //
 340
 341 ULONG
 342 AFSGenerateCRC( IN PUNICODE_STRING FileName,
 343                 IN BOOLEAN UpperCaseName)
 344 {
 345
 346     ULONG ulCRC = 0;
 347     NTSTATUS ntStatus = STATUS_SUCCESS;
 348
 349     ntStatus = RtlHashUnicodeString( FileName,
 350                                      UpperCaseName,
 351                                      HASH_STRING_ALGORITHM_DEFAULT,
 352                                      &ulCRC);
 353
 354     if( !NT_SUCCESS( ntStatus))
 355     {
 356         ulCRC = 0;
 357     }
 358
 359     return ulCRC;
 360 }
 361
 362 void *
 363 AFSLockSystemBuffer( IN PIRP Irp,
 364                      IN ULONG Length)
 365 {
 366
 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     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 547     KAPC stApcState;
 548
 549     __Enter
 550     {
 551
 552         if( pDevExt->Specific.Control.ServiceProcess == NULL)
 553         {
 554
 555             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
 556         }
 557
 558         if( Mdl != NULL)
 559         {
 560
 561             //
 562             // Attach to the service process for mapping
 563             //
 564
 565             KeStackAttachProcess( pDevExt->Specific.Control.ServiceProcess,
 566                                   (PRKAPC_STATE)&stApcState);
 567
 568             MmUnmapLockedPages( MappedBuffer,
 569                                 Mdl);
 570
 571             KeUnstackDetachProcess( (PRKAPC_STATE)&stApcState);
 572         }
 573
 574 try_exit:
 575
 576         NOTHING;
 577     }
 578
 579     return ntStatus;
 580 }
 581
 582 NTSTATUS
 583 AFSInitializeLibraryDevice()
 584 {
 585
 586     NTSTATUS ntStatus = STATUS_SUCCESS;
 587     AFSDeviceExt *pDeviceExt = NULL;
 588
 589     __Enter
 590     {
 591
 592         pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 593
 594         //
 595         // The PIOCtl file name
 596         //
 597
 598         RtlInitUnicodeString( &AFSPIOCtlName,
 599                               AFS_PIOCTL_FILE_INTERFACE_NAME);
 600
 601         //
 602         // And the global root share name
 603         //
 604
 605         RtlInitUnicodeString( &AFSGlobalRootName,
 606                               AFS_GLOBAL_ROOT_SHARE_NAME);
 607
 608     }
 609
 610     return ntStatus;
 611 }
 612
 613 NTSTATUS
 614 AFSRemoveLibraryDevice()
 615 {
 616
 617     NTSTATUS ntStatus = STATUS_SUCCESS;
 618
 619     __Enter
 620     {
 621
 622     }
 623
 624     return ntStatus;
 625 }
 626
 627 NTSTATUS
 628 AFSDefaultDispatch( IN PDEVICE_OBJECT DeviceObject,
 629                     IN PIRP Irp)
 630 {
 631
 632     UNREFERENCED_PARAMETER(DeviceObject);
 633     NTSTATUS            ntStatus = STATUS_INVALID_DEVICE_REQUEST;
 634
 635     AFSCompleteRequest( Irp,
 636                         ntStatus);
 637
 638     return ntStatus;
 639 }
 640
 641 NTSTATUS
 642 AFSInitializeGlobalDirectoryEntries()
 643 {
 644
 645     NTSTATUS ntStatus = STATUS_SUCCESS;
 646     AFSDirectoryCB *pDirNode = NULL;
 647     ULONG ulEntryLength = 0;
 648     AFSObjectInfoCB *pObjectInfoCB = NULL;
 649     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
 650     LONG lCount;
 651
 652     __Enter
 653     {
 654
 655         //
 656         // Initialize the global . entry
 657         //
 658
 659         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
 660                                                0);
 661
 662         if( pObjectInfoCB == NULL)
 663         {
 664
 665             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 666                           AFS_TRACE_LEVEL_ERROR,
 667                           "AFSInitializeGlobalDirectory AFSAllocateObjectInfo failure %08lX\n",
 668                           ntStatus);
 669
 670             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 671         }
 672
 673         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
 674                                          AFS_OBJECT_REFERENCE_GLOBAL);
 675
 676         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 677                       AFS_TRACE_LEVEL_VERBOSE,
 678                       "AFSInitializeGlobalDirectoryEntries Increment count on object %p Cnt %d\n",
 679                       pObjectInfoCB,
 680                       lCount);
 681
 682         ntStatus = STATUS_SUCCESS;
 683
 684         ulEntryLength = sizeof( AFSDirectoryCB) +
 685                                      sizeof( WCHAR);
 686
 687         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
 688                                                                   ulEntryLength,
 689                                                                   AFS_DIR_ENTRY_TAG);
 690
 691         if( pDirNode == NULL)
 692         {
 693
 694             AFSDeleteObjectInfo( &pObjectInfoCB);
 695
 696             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING | AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 697                           AFS_TRACE_LEVEL_ERROR,
 698                           "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_TAG allocation failure\n");
 699
 700             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 701         }
 702
 703         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 704                       AFS_TRACE_LEVEL_VERBOSE,
 705                       "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_TAG allocated %p\n",
 706                       pDirNode);
 707
 708         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 709                                                                                    sizeof( AFSNonPagedDirectoryCB),
 710                                                                                    AFS_DIR_ENTRY_NP_TAG);
 711
 712         if( pNonPagedDirEntry == NULL)
 713         {
 714
 715             ExFreePool( pDirNode);
 716
 717             AFSDeleteObjectInfo( &pObjectInfoCB);
 718
 719             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 720                           AFS_TRACE_LEVEL_ERROR,
 721                           "AFSInitializeGlobalDirectory AFS_DIR_ENTRY_NP_TAG allocation failure\n");
 722
 723             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 724         }
 725
 726         RtlZeroMemory( pDirNode,
 727                        ulEntryLength);
 728
 729         RtlZeroMemory( pNonPagedDirEntry,
 730                        sizeof( AFSNonPagedDirectoryCB));
 731
 732         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
 733
 734         pDirNode->NonPaged = pNonPagedDirEntry;
 735
 736         pDirNode->ObjectInformation = pObjectInfoCB;
 737
 738         //
 739         // Set valid entry
 740         //
 741
 742         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE | AFS_DIR_ENTRY_FAKE | AFS_DIR_ENTRY_VALID);
 743
 744         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_DOT_INDEX;
 745
 746         //
 747         // Setup the names in the entry
 748         //
 749
 750         pDirNode->NameInformation.FileName.Length = sizeof( WCHAR);
 751
 752         pDirNode->NameInformation.FileName.MaximumLength = sizeof( WCHAR);
 753
 754         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
 755
 756         pDirNode->NameInformation.FileName.Buffer[ 0] = L'.';
 757
 758         //
 759         // Populate the rest of the data
 760         //
 761
 762         pObjectInfoCB->FileType = AFS_FILE_TYPE_DIRECTORY;
 763
 764         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 765
 766         AFSGlobalDotDirEntry = pDirNode;
 767
 768         //
 769         // Now the .. entry
 770         //
 771
 772         pObjectInfoCB = AFSAllocateObjectInfo( &AFSGlobalRoot->ObjectInformation,
 773                                                0);
 774
 775         if( pObjectInfoCB == NULL)
 776         {
 777
 778             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
 779                           AFS_TRACE_LEVEL_ERROR,
 780                           "AFSInitializeGlobalDirectory AFSAllocateObjectInfo (2) failure %08lX\n",
 781                           ntStatus);
 782
 783             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 784         }
 785
 786         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
 787                                          AFS_OBJECT_REFERENCE_GLOBAL);
 788
 789         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 790                       AFS_TRACE_LEVEL_VERBOSE,
 791                       "AFSInitializeGlobalDirectoryEntries Increment count on object %p Cnt %d\n",
 792                       pObjectInfoCB,
 793                       lCount);
 794
 795         ntStatus = STATUS_SUCCESS;
 796
 797         ulEntryLength = sizeof( AFSDirectoryCB) +
 798                                      ( 2 * sizeof( WCHAR));
 799
 800         pDirNode = (AFSDirectoryCB *)AFSLibExAllocatePoolWithTag( PagedPool,
 801                                                                   ulEntryLength,
 802                                                                   AFS_DIR_ENTRY_TAG);
 803
 804         if( pDirNode == NULL)
 805         {
 806
 807             AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING | AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 808                           AFS_TRACE_LEVEL_ERROR,
 809                           "AFSInitializeGlobalDirectoryEntries AFS_DIR_ENTRY_TAG allocation failure\n");
 810
 811             AFSDeleteObjectInfo( &pObjectInfoCB);
 812
 813             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 814         }
 815
 816         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
 817                       AFS_TRACE_LEVEL_VERBOSE,
 818                       "AFSInitializeGlobalDirectoryEntries AFS_DIR_ENTRY_TAG allocated %p\n",
 819                       pDirNode);
 820
 821         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 822                                                                                    sizeof( AFSNonPagedDirectoryCB),
 823                                                                                    AFS_DIR_ENTRY_NP_TAG);
 824
 825         if( pNonPagedDirEntry == NULL)
 826         {
 827
 828             ExFreePool( pDirNode);
 829
 830             AFSDeleteObjectInfo( &pObjectInfoCB);
 831
 832             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 833         }
 834
 835         RtlZeroMemory( pDirNode,
 836                        ulEntryLength);
 837
 838         RtlZeroMemory( pNonPagedDirEntry,
 839                        sizeof( AFSNonPagedDirectoryCB));
 840
 841         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
 842
 843         pDirNode->NonPaged = pNonPagedDirEntry;
 844
 845         pDirNode->ObjectInformation = pObjectInfoCB;
 846
 847         //
 848         // Set valid entry
 849         //
 850
 851         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE | AFS_DIR_ENTRY_FAKE | AFS_DIR_ENTRY_VALID);
 852
 853         pDirNode->FileIndex = (ULONG)AFS_DIR_ENTRY_DOT_DOT_INDEX;
 854
 855         //
 856         // Setup the names in the entry
 857         //
 858
 859         pDirNode->NameInformation.FileName.Length = 2 * sizeof( WCHAR);
 860
 861         pDirNode->NameInformation.FileName.MaximumLength = 2 * sizeof( WCHAR);
 862
 863         pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
 864
 865         pDirNode->NameInformation.FileName.Buffer[ 0] = L'.';
 866
 867         pDirNode->NameInformation.FileName.Buffer[ 1] = L'.';
 868
 869         //
 870         // Populate the rest of the data
 871         //
 872
 873         pObjectInfoCB->FileType = AFS_FILE_TYPE_DIRECTORY;
 874
 875         pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
 876
 877         AFSGlobalDotDotDirEntry = pDirNode;
 878
 879 try_exit:
 880
 881         if( !NT_SUCCESS( ntStatus))
 882         {
 883
 884             if( AFSGlobalDotDirEntry != NULL)
 885             {
 886
 887                 AFSDeleteObjectInfo( &AFSGlobalDotDirEntry->ObjectInformation);
 888
 889                 ExDeleteResourceLite( &AFSGlobalDotDirEntry->NonPaged->Lock);
 890
 891                 ExFreePool( AFSGlobalDotDirEntry->NonPaged);
 892
 893                 ExFreePool( AFSGlobalDotDirEntry);
 894
 895                 AFSGlobalDotDirEntry = NULL;
 896             }
 897
 898             if( AFSGlobalDotDotDirEntry != NULL)
 899             {
 900
 901                 AFSDeleteObjectInfo( &AFSGlobalDotDotDirEntry->ObjectInformation);
 902
 903                 ExDeleteResourceLite( &AFSGlobalDotDotDirEntry->NonPaged->Lock);
 904
 905                 ExFreePool( AFSGlobalDotDotDirEntry->NonPaged);
 906
 907                 ExFreePool( AFSGlobalDotDotDirEntry);
 908
 909                 AFSGlobalDotDotDirEntry = NULL;
 910             }
 911         }
 912     }
 913
 914     return ntStatus;
 915 }
 916
 917 AFSDirectoryCB *
 918 AFSInitDirEntry( IN AFSObjectInfoCB *ParentObjectInfo,
 919                  IN PUNICODE_STRING FileName,
 920                  IN PUNICODE_STRING TargetName,
 921                  IN AFSDirEnumEntry *DirEnumEntry,
 922                  IN ULONG FileIndex)
 923 {
 924
 925     AFSDirectoryCB *pDirNode = NULL;
 926     NTSTATUS ntStatus = STATUS_SUCCESS;
 927     ULONG ulEntryLength = 0;
 928     AFSObjectInfoCB *pObjectInfoCB = NULL;
 929     BOOLEAN bAllocatedObjectCB = FALSE;
 930     ULONGLONG ullIndex = 0;
 931     AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
 932     LONG lCount;
 933
 934     __Enter
 935     {
 936
 937         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 938                       AFS_TRACE_LEVEL_VERBOSE,
 939                       "AFSInitDirEntry Initializing entry %wZ parent FID %08lX-%08lX-%08lX-%08lX\n",
 940                       FileName,
 941                       ParentObjectInfo->FileId.Cell,
 942                       ParentObjectInfo->FileId.Volume,
 943                       ParentObjectInfo->FileId.Vnode,
 944                       ParentObjectInfo->FileId.Unique);
 945
 946         //
 947         // First thing is to locate/create our object information block
 948         // for this entry
 949         //
 950
 951         AFSAcquireExcl( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
 952                         TRUE);
 953
 954         ullIndex = AFSCreateLowIndex( &DirEnumEntry->FileId);
 955
 956         ntStatus = AFSLocateHashEntry( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
 957                                        ullIndex,
 958                                        (AFSBTreeEntry **)&pObjectInfoCB);
 959
 960         if( !NT_SUCCESS( ntStatus) ||
 961             pObjectInfoCB == NULL)
 962         {
 963
 964             //
 965             // Allocate our object info cb
 966             //
 967
 968             pObjectInfoCB = AFSAllocateObjectInfo( ParentObjectInfo,
 969                                                    ullIndex);
 970
 971             if( pObjectInfoCB == NULL)
 972             {
 973
 974                 AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
 975
 976                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 977             }
 978
 979             bAllocatedObjectCB = TRUE;
 980
 981             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 982                           AFS_TRACE_LEVEL_VERBOSE,
 983                           "AFSInitDirEntry initialized object %p Parent Object %p for %wZ\n",
 984                           pObjectInfoCB,
 985                           ParentObjectInfo,
 986                           FileName);
 987         }
 988
 989         lCount = AFSObjectInfoIncrement( pObjectInfoCB,
 990                                          AFS_OBJECT_REFERENCE_DIRENTRY);
 991
 992         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
 993                       AFS_TRACE_LEVEL_VERBOSE,
 994                       "AFSInitDirEntry Increment count on object %p Cnt %d\n",
 995                       pObjectInfoCB,
 996                       lCount);
 997
 998         AFSReleaseResource( ParentObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
 999
1000         ntStatus = STATUS_SUCCESS;
1001
1002         ulEntryLength = sizeof( AFSDirectoryCB) +
1003                                      FileName->Length;
1004
1005         if( TargetName != NULL)
1006         {
1007
1008             ulEntryLength += TargetName->Length;
1009         }
1010
1011         pDirNode = (AFSDirectoryCB *)AFSExAllocatePoolWithTag( PagedPool,
1012                                                                ulEntryLength,
1013                                                                AFS_DIR_ENTRY_TAG);
1014
1015         if( pDirNode == NULL)
1016         {
1017
1018             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1019         }
1020
1021         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
1022                       AFS_TRACE_LEVEL_VERBOSE,
1023                       "AFSInitDirEntry AFS_DIR_ENTRY_TAG allocated %p\n",
1024                       pDirNode);
1025
1026         pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSExAllocatePoolWithTag( NonPagedPool,
1027                                                                                 sizeof( AFSNonPagedDirectoryCB),
1028                                                                                 AFS_DIR_ENTRY_NP_TAG);
1029
1030         if( pNonPagedDirEntry == NULL)
1031         {
1032
1033             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1034         }
1035
1036         RtlZeroMemory( pDirNode,
1037                        ulEntryLength);
1038
1039         RtlZeroMemory( pNonPagedDirEntry,
1040                        sizeof( AFSNonPagedDirectoryCB));
1041
1042         ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
1043
1044         pDirNode->NonPaged = pNonPagedDirEntry;
1045
1046         pDirNode->ObjectInformation = pObjectInfoCB;
1047
1048         //
1049         // Set valid entry and NOT_IN_PARENT flag
1050         //
1051
1052         SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_VALID | AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
1053
1054         pDirNode->FileIndex = FileIndex;
1055
1056         //
1057         // Setup the names in the entry
1058         //
1059
1060         if( FileName->Length > 0)
1061         {
1062
1063             pDirNode->NameInformation.FileName.Length = FileName->Length;
1064
1065             pDirNode->NameInformation.FileName.MaximumLength = FileName->Length;
1066
1067             pDirNode->NameInformation.FileName.Buffer = (WCHAR *)((char *)pDirNode + sizeof( AFSDirectoryCB));
1068
1069             RtlCopyMemory( pDirNode->NameInformation.FileName.Buffer,
1070                            FileName->Buffer,
1071                            pDirNode->NameInformation.FileName.Length);
1072
1073             //
1074             // Create a CRC for the file
1075             //
1076
1077             pDirNode->CaseSensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
1078                                                                          FALSE);
1079
1080             pDirNode->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pDirNode->NameInformation.FileName,
1081                                                                            TRUE);
1082         }
1083
1084         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1085                       AFS_TRACE_LEVEL_VERBOSE,
1086                       "AFSInitDirEntry Initialized DE %p for %wZ in parent FID %08lX-%08lX-%08lX-%08lX\n",
1087                       pDirNode,
1088                       FileName,
1089                       ParentObjectInfo->FileId.Cell,
1090                       ParentObjectInfo->FileId.Volume,
1091                       ParentObjectInfo->FileId.Vnode,
1092                       ParentObjectInfo->FileId.Unique);
1093
1094         if( TargetName != NULL &&
1095             TargetName->Length > 0)
1096         {
1097
1098             pDirNode->NameInformation.TargetName.Length = TargetName->Length;
1099
1100             pDirNode->NameInformation.TargetName.MaximumLength = pDirNode->NameInformation.TargetName.Length;
1101
1102             pDirNode->NameInformation.TargetName.Buffer = (WCHAR *)((char *)pDirNode +
1103                                                                             sizeof( AFSDirectoryCB) +
1104                                                                             pDirNode->NameInformation.FileName.Length);
1105
1106             RtlCopyMemory( pDirNode->NameInformation.TargetName.Buffer,
1107                            TargetName->Buffer,
1108                            pDirNode->NameInformation.TargetName.Length);
1109         }
1110
1111         //
1112         // If we allocated the object information cb then update the information
1113         //
1114
1115         if( bAllocatedObjectCB)
1116         {
1117
1118             //
1119             // Populate the rest of the data
1120             //
1121
1122             pObjectInfoCB->FileId = DirEnumEntry->FileId;
1123
1124             pObjectInfoCB->TargetFileId = DirEnumEntry->TargetFileId;
1125
1126             pObjectInfoCB->FileType = DirEnumEntry->FileType;
1127
1128             pObjectInfoCB->CreationTime = DirEnumEntry->CreationTime;
1129
1130             pObjectInfoCB->LastAccessTime = DirEnumEntry->LastAccessTime;
1131
1132             pObjectInfoCB->LastWriteTime = DirEnumEntry->LastWriteTime;
1133
1134             pObjectInfoCB->ChangeTime = DirEnumEntry->ChangeTime;
1135
1136             pObjectInfoCB->EndOfFile = DirEnumEntry->EndOfFile;
1137
1138             pObjectInfoCB->AllocationSize = DirEnumEntry->AllocationSize;
1139
1140             pObjectInfoCB->FileAttributes = DirEnumEntry->FileAttributes;
1141
1142             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1143             {
1144
1145                 pObjectInfoCB->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1146             }
1147
1148             if (pObjectInfoCB->FileType == AFS_FILE_TYPE_SYMLINK ||
1149                 pObjectInfoCB->FileType == AFS_FILE_TYPE_DFSLINK)
1150             {
1151
1152                 pObjectInfoCB->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1153             }
1154
1155             pObjectInfoCB->EaSize = DirEnumEntry->EaSize;
1156
1157             //
1158             // Check for the case where we have a filetype of SymLink but both the TargetFid and the
1159             // TargetName are empty. In this case set the filetype to zero so we evaluate it later in
1160             // the code
1161             //
1162
1163             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_SYMLINK &&
1164                 pObjectInfoCB->TargetFileId.Vnode == 0 &&
1165                 pObjectInfoCB->TargetFileId.Unique == 0 &&
1166                 pDirNode->NameInformation.TargetName.Length == 0)
1167             {
1168
1169                 //
1170                 // This will ensure we perform a validation on the node
1171                 //
1172
1173                 pObjectInfoCB->FileType = AFS_FILE_TYPE_UNKNOWN;
1174             }
1175
1176             if( pObjectInfoCB->FileType == AFS_FILE_TYPE_UNKNOWN)
1177             {
1178
1179                 SetFlag( pObjectInfoCB->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED);
1180             }
1181         }
1182
1183         //
1184         // Object specific information
1185         //
1186
1187         pObjectInfoCB->Links = DirEnumEntry->Links;
1188
1189         pObjectInfoCB->Expiration = DirEnumEntry->Expiration;
1190
1191         pObjectInfoCB->DataVersion = DirEnumEntry->DataVersion;
1192
1193 try_exit:
1194
1195         if( !NT_SUCCESS( ntStatus))
1196         {
1197
1198             if( pNonPagedDirEntry != NULL)
1199             {
1200
1201                 ExDeleteResourceLite( &pNonPagedDirEntry->Lock);
1202
1203                 AFSExFreePoolWithTag( pNonPagedDirEntry, AFS_DIR_ENTRY_NP_TAG);
1204             }
1205
1206             if( pDirNode != NULL)
1207             {
1208
1209                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_ALLOCATION,
1210                               AFS_TRACE_LEVEL_VERBOSE,
1211                               "AFSInitDirEntry AFS_DIR_ENTRY_TAG deallocating %p\n",
1212                               pDirNode);
1213
1214                 AFSExFreePoolWithTag( pDirNode, AFS_DIR_ENTRY_TAG);
1215
1216                 pDirNode = NULL;
1217             }
1218
1219             //
1220             // Dereference our object info block if we have one
1221             //
1222
1223             if( pObjectInfoCB != NULL)
1224             {
1225
1226                 lCount = AFSObjectInfoDecrement( pObjectInfoCB,
1227                                                  AFS_OBJECT_REFERENCE_DIRENTRY);
1228
1229                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
1230                               AFS_TRACE_LEVEL_VERBOSE,
1231                               "AFSInitDirEntry Decrement count on object %p Cnt %d\n",
1232                               pObjectInfoCB,
1233                               lCount);
1234
1235                 if( bAllocatedObjectCB)
1236                 {
1237
1238                     ASSERT( pObjectInfoCB->ObjectReferenceCount == 0);
1239
1240                     AFSDeleteObjectInfo( &pObjectInfoCB);
1241                 }
1242             }
1243         }
1244     }
1245
1246     return pDirNode;
1247 }
1248
1249 BOOLEAN
1250 AFSCheckForReadOnlyAccess( IN ACCESS_MASK DesiredAccess,
1251                            IN BOOLEAN DirectoryEntry)
1252 {
1253
1254     BOOLEAN bReturn = TRUE;
1255     ACCESS_MASK stAccessMask = 0;
1256
1257     //
1258     // Get rid of anything we don't know about
1259     //
1260
1261     DesiredAccess = (DesiredAccess   &
1262                           ( DELETE |
1263                             READ_CONTROL |
1264                             WRITE_OWNER |
1265                             WRITE_DAC |
1266                             SYNCHRONIZE |
1267                             ACCESS_SYSTEM_SECURITY |
1268                             FILE_WRITE_DATA |
1269                             FILE_READ_EA |
1270                             FILE_WRITE_EA |
1271                             FILE_READ_ATTRIBUTES |
1272                             FILE_WRITE_ATTRIBUTES |
1273                             FILE_LIST_DIRECTORY |
1274                             FILE_TRAVERSE |
1275                             FILE_DELETE_CHILD |
1276                             FILE_APPEND_DATA));
1277
1278     //
1279     // Our 'read only' access mask. These are the accesses we will
1280     // allow for a read only file
1281     //
1282
1283     stAccessMask = DELETE |
1284                         READ_CONTROL |
1285                         WRITE_OWNER |
1286                         WRITE_DAC |
1287                         SYNCHRONIZE |
1288                         ACCESS_SYSTEM_SECURITY |
1289                         FILE_READ_DATA |
1290                         FILE_READ_EA |
1291                         FILE_WRITE_EA |
1292                         FILE_READ_ATTRIBUTES |
1293                         FILE_WRITE_ATTRIBUTES |
1294                         FILE_EXECUTE |
1295                         FILE_LIST_DIRECTORY |
1296                         FILE_TRAVERSE;
1297
1298     //
1299     // For a directory, add in the directory specific accesses
1300     //
1301
1302     if( DirectoryEntry)
1303     {
1304
1305         stAccessMask |= FILE_ADD_SUBDIRECTORY |
1306                                 FILE_ADD_FILE |
1307                                 FILE_DELETE_CHILD;
1308     }
1309
1310     if( FlagOn( DesiredAccess, ~stAccessMask))
1311     {
1312
1313         //
1314         // A write access is set ...
1315         //
1316
1317         bReturn = FALSE;
1318     }
1319
1320     return bReturn;
1321 }
1322
1323 NTSTATUS
1324 AFSEvaluateNode( IN GUID *AuthGroup,
1325                  IN AFSDirectoryCB *DirEntry)
1326 {
1327
1328     NTSTATUS ntStatus = STATUS_SUCCESS;
1329     AFSDirEnumEntry *pDirEntry = NULL;
1330     UNICODE_STRING uniTargetName;
1331
1332     __Enter
1333     {
1334
1335         ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
1336                                           AuthGroup,
1337                                           FALSE,
1338                                           &pDirEntry);
1339
1340         if( !NT_SUCCESS( ntStatus))
1341         {
1342
1343             try_return( ntStatus);
1344         }
1345
1346         DirEntry->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
1347
1348         DirEntry->ObjectInformation->Expiration = pDirEntry->Expiration;
1349
1350         DirEntry->ObjectInformation->DataVersion = pDirEntry->DataVersion;
1351
1352         DirEntry->ObjectInformation->FileType = pDirEntry->FileType;
1353
1354         DirEntry->ObjectInformation->CreationTime = pDirEntry->CreationTime;
1355
1356         DirEntry->ObjectInformation->LastAccessTime = pDirEntry->LastAccessTime;
1357
1358         DirEntry->ObjectInformation->LastWriteTime = pDirEntry->LastWriteTime;
1359
1360         DirEntry->ObjectInformation->ChangeTime = pDirEntry->ChangeTime;
1361
1362         DirEntry->ObjectInformation->EndOfFile = pDirEntry->EndOfFile;
1363
1364         DirEntry->ObjectInformation->AllocationSize = pDirEntry->AllocationSize;
1365
1366         DirEntry->ObjectInformation->FileAttributes = pDirEntry->FileAttributes;
1367
1368         if( pDirEntry->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1369         {
1370
1371             DirEntry->ObjectInformation->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1372         }
1373
1374         if( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK ||
1375             pDirEntry->FileType == AFS_FILE_TYPE_DFSLINK)
1376         {
1377
1378             DirEntry->ObjectInformation->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1379         }
1380
1381         DirEntry->ObjectInformation->EaSize = pDirEntry->EaSize;
1382
1383         DirEntry->ObjectInformation->Links = pDirEntry->Links;
1384
1385         //
1386         // If we have a target name then see if it needs updating ...
1387         //
1388
1389         if( pDirEntry->TargetNameLength > 0)
1390         {
1391
1392             //
1393             // Update the target name information if needed
1394             //
1395
1396             uniTargetName.Length = (USHORT)pDirEntry->TargetNameLength;
1397
1398             uniTargetName.MaximumLength = uniTargetName.Length;
1399
1400             uniTargetName.Buffer = (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset);
1401
1402             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
1403                             TRUE);
1404
1405             if( DirEntry->NameInformation.TargetName.Length == 0 ||
1406                 RtlCompareUnicodeString( &uniTargetName,
1407                                          &DirEntry->NameInformation.TargetName,
1408                                          TRUE) != 0)
1409             {
1410
1411                 //
1412                 // Update the target name
1413                 //
1414
1415                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
1416                                                 &DirEntry->Flags,
1417                                                 uniTargetName.Buffer,
1418                                                 uniTargetName.Length);
1419
1420                 if( !NT_SUCCESS( ntStatus))
1421                 {
1422
1423                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
1424
1425                     try_return( ntStatus);
1426                 }
1427             }
1428
1429             AFSReleaseResource( &DirEntry->NonPaged->Lock);
1430         }
1431
1432 try_exit:
1433
1434         if( pDirEntry != NULL)
1435         {
1436
1437             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
1438         }
1439     }
1440
1441     return ntStatus;
1442 }
1443
1444 NTSTATUS
1445 AFSValidateSymLink( IN GUID *AuthGroup,
1446                     IN AFSDirectoryCB *DirEntry)
1447 {
1448
1449     NTSTATUS ntStatus = STATUS_SUCCESS;
1450     AFSDirEnumEntry *pDirEntry = NULL;
1451     UNICODE_STRING uniTargetName;
1452
1453     __Enter
1454     {
1455
1456         ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
1457                                           AuthGroup,
1458                                           FALSE,
1459                                           &pDirEntry);
1460
1461         if( !NT_SUCCESS( ntStatus))
1462         {
1463
1464             try_return( ntStatus);
1465         }
1466
1467         if( pDirEntry->FileType == AFS_FILE_TYPE_UNKNOWN ||
1468             pDirEntry->FileType == AFS_FILE_TYPE_INVALID)
1469         {
1470
1471             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1472                           AFS_TRACE_LEVEL_VERBOSE_2,
1473                           "AFSValidateSymLink Invalid type Status %08lX\n",
1474                           STATUS_OBJECT_NAME_NOT_FOUND);
1475
1476             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
1477         }
1478
1479         DirEntry->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
1480
1481         DirEntry->ObjectInformation->Expiration = pDirEntry->Expiration;
1482
1483         DirEntry->ObjectInformation->DataVersion = pDirEntry->DataVersion;
1484
1485         //
1486         // Update the target name information if needed
1487         //
1488
1489         uniTargetName.Length = (USHORT)pDirEntry->TargetNameLength;
1490
1491         uniTargetName.MaximumLength = uniTargetName.Length;
1492
1493         uniTargetName.Buffer = (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset);
1494
1495         if( uniTargetName.Length > 0)
1496         {
1497
1498             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
1499                             TRUE);
1500
1501             if( DirEntry->NameInformation.TargetName.Length == 0 ||
1502                 RtlCompareUnicodeString( &uniTargetName,
1503                                          &DirEntry->NameInformation.TargetName,
1504                                          TRUE) != 0)
1505             {
1506
1507                 //
1508                 // Update the target name
1509                 //
1510
1511                 ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
1512                                                 &DirEntry->Flags,
1513                                                 uniTargetName.Buffer,
1514                                                 uniTargetName.Length);
1515
1516                 if( !NT_SUCCESS( ntStatus))
1517                 {
1518
1519                     AFSReleaseResource( &DirEntry->NonPaged->Lock);
1520
1521                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
1522                 }
1523             }
1524
1525             AFSReleaseResource( &DirEntry->NonPaged->Lock);
1526         }
1527
1528         //
1529         // If the FileType is the same then nothing to do since it IS
1530         // a SymLink
1531         //
1532
1533         if( pDirEntry->FileType == DirEntry->ObjectInformation->FileType)
1534         {
1535
1536             ASSERT( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK);
1537
1538             try_return( ntStatus = STATUS_SUCCESS);
1539         }
1540
1541         DirEntry->ObjectInformation->FileType = pDirEntry->FileType;
1542
1543         DirEntry->ObjectInformation->CreationTime = pDirEntry->CreationTime;
1544
1545         DirEntry->ObjectInformation->LastAccessTime = pDirEntry->LastAccessTime;
1546
1547         DirEntry->ObjectInformation->LastWriteTime = pDirEntry->LastWriteTime;
1548
1549         DirEntry->ObjectInformation->ChangeTime = pDirEntry->ChangeTime;
1550
1551         DirEntry->ObjectInformation->EndOfFile = pDirEntry->EndOfFile;
1552
1553         DirEntry->ObjectInformation->AllocationSize = pDirEntry->AllocationSize;
1554
1555         DirEntry->ObjectInformation->FileAttributes = pDirEntry->FileAttributes;
1556
1557         if( pDirEntry->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1558         {
1559
1560             DirEntry->ObjectInformation->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
1561         }
1562
1563         if( pDirEntry->FileType == AFS_FILE_TYPE_SYMLINK ||
1564             pDirEntry->FileType == AFS_FILE_TYPE_DFSLINK)
1565         {
1566
1567             DirEntry->ObjectInformation->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
1568         }
1569
1570         DirEntry->ObjectInformation->EaSize = pDirEntry->EaSize;
1571
1572         DirEntry->ObjectInformation->Links = pDirEntry->Links;
1573
1574 try_exit:
1575
1576         if( pDirEntry != NULL)
1577         {
1578
1579             AFSExFreePoolWithTag( pDirEntry, AFS_GENERIC_MEMORY_2_TAG);
1580         }
1581     }
1582
1583     return ntStatus;
1584 }
1585
1586 NTSTATUS
1587 AFSInvalidateObject( IN OUT AFSObjectInfoCB **ppObjectInfo,
1588                      IN     ULONG Reason)
1589 {
1590
1591     NTSTATUS ntStatus = STATUS_SUCCESS;
1592     IO_STATUS_BLOCK stIoStatus;
1593     ULONG ulFilter = 0;
1594     AFSObjectInfoCB * pParentObjectInfo = NULL;
1595
1596     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1597                   AFS_TRACE_LEVEL_VERBOSE,
1598                   "AFSInvalidateObject Invalidation on node type %d for fid %08lX-%08lX-%08lX-%08lX Reason %d\n",
1599                   (*ppObjectInfo)->FileType,
1600                   (*ppObjectInfo)->FileId.Cell,
1601                   (*ppObjectInfo)->FileId.Volume,
1602                   (*ppObjectInfo)->FileId.Vnode,
1603                   (*ppObjectInfo)->FileId.Unique,
1604                   Reason);
1605
1606     if ( BooleanFlagOn( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_PARENT_FID))
1607     {
1608
1609         pParentObjectInfo = AFSFindObjectInfo( (*ppObjectInfo)->VolumeCB,
1610                                                &(*ppObjectInfo)->ParentFileId);
1611     }
1612
1613     if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_SYMLINK ||
1614         (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DFSLINK ||
1615         (*ppObjectInfo)->FileType == AFS_FILE_TYPE_MOUNTPOINT)
1616     {
1617         //
1618         // We only act on the mount point itself, not the target. If the
1619         // node has been deleted then mark it as such otherwise indicate
1620         // it requires verification
1621         //
1622
1623         if( Reason == AFS_INVALIDATE_DELETED)
1624         {
1625             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
1626         }
1627         else
1628         {
1629
1630             if( Reason == AFS_INVALIDATE_FLUSHED)
1631             {
1632
1633                 (*ppObjectInfo)->DataVersion.QuadPart = (ULONGLONG)-1;
1634
1635                 SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
1636             }
1637
1638             (*ppObjectInfo)->Expiration.QuadPart = 0;
1639
1640             (*ppObjectInfo)->TargetFileId.Vnode = 0;
1641
1642             (*ppObjectInfo)->TargetFileId.Unique = 0;
1643
1644             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1645                           AFS_TRACE_LEVEL_VERBOSE,
1646                           "AFSInvalidateObject Setting VERIFY flag on fid %08lX-%08lX-%08lX-%08lX\n",
1647                           (*ppObjectInfo)->FileId.Cell,
1648                           (*ppObjectInfo)->FileId.Volume,
1649                           (*ppObjectInfo)->FileId.Vnode,
1650                           (*ppObjectInfo)->FileId.Unique);
1651
1652             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY);
1653         }
1654
1655         if ( pParentObjectInfo != NULL)
1656         {
1657
1658             ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1659
1660             if( Reason == AFS_INVALIDATE_CREDS)
1661             {
1662                 ulFilter |= FILE_NOTIFY_CHANGE_SECURITY;
1663             }
1664
1665             if( Reason == AFS_INVALIDATE_DATA_VERSION ||
1666                 Reason == AFS_INVALIDATE_FLUSHED)
1667             {
1668                 ulFilter |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE;
1669             }
1670             else
1671             {
1672                 ulFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1673             }
1674
1675             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1676                                             NULL,
1677                                             ulFilter,
1678                                             FILE_ACTION_MODIFIED);
1679         }
1680
1681         try_return( ntStatus);
1682     }
1683
1684     //
1685     // Depending on the reason for invalidation then perform work on the node
1686     //
1687
1688     switch( Reason)
1689     {
1690
1691     case AFS_INVALIDATE_DELETED:
1692         {
1693
1694             //
1695             // Mark this node as invalid
1696             //
1697
1698             (*ppObjectInfo)->Links = 0;
1699
1700             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_DELETED);
1701
1702             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1703                           AFS_TRACE_LEVEL_VERBOSE,
1704                           "AFSInvalidateObject Set DELETE flag on fid %08lX-%08lX-%08lX-%08lX\n",
1705                           (*ppObjectInfo)->FileId.Cell,
1706                           (*ppObjectInfo)->FileId.Volume,
1707                           (*ppObjectInfo)->FileId.Vnode,
1708                           (*ppObjectInfo)->FileId.Unique);
1709
1710             if( pParentObjectInfo != NULL)
1711             {
1712
1713                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1714                               AFS_TRACE_LEVEL_VERBOSE,
1715                               "AFSInvalidateObject Set VERIFY flag on parent fid %08lX-%08lX-%08lX-%08lX\n",
1716                               pParentObjectInfo->FileId.Cell,
1717                               pParentObjectInfo->FileId.Volume,
1718                               pParentObjectInfo->FileId.Vnode,
1719                               pParentObjectInfo->FileId.Unique);
1720
1721                 SetFlag( pParentObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
1722
1723                 pParentObjectInfo->DataVersion.QuadPart = (ULONGLONG)-1;
1724
1725                 pParentObjectInfo->Expiration.QuadPart = 0;
1726
1727                 if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1728                 {
1729                     ulFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
1730                 }
1731                 else
1732                 {
1733                     ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1734                 }
1735
1736                 AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1737                                                 NULL,
1738                                                 ulFilter,
1739                                                 FILE_ACTION_REMOVED);
1740             }
1741
1742             if( NT_SUCCESS( AFSQueueInvalidateObject( (*ppObjectInfo),
1743                                                       Reason)))
1744             {
1745                 (*ppObjectInfo) = NULL; // We'll dec the count in the worker item
1746             }
1747
1748             break;
1749         }
1750
1751     case AFS_INVALIDATE_FLUSHED:
1752         {
1753
1754             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE &&
1755                 (*ppObjectInfo)->Fcb != NULL)
1756             {
1757
1758                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1759                               AFS_TRACE_LEVEL_VERBOSE,
1760                               "AFSInvalidateObject Flush/purge file fid %08lX-%08lX-%08lX-%08lX\n",
1761                               (*ppObjectInfo)->FileId.Cell,
1762                               (*ppObjectInfo)->FileId.Volume,
1763                               (*ppObjectInfo)->FileId.Vnode,
1764                               (*ppObjectInfo)->FileId.Unique);
1765
1766                 AFSAcquireExcl( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectResource,
1767                                 TRUE);
1768
1769                 __try
1770                 {
1771
1772                     CcFlushCache( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers,
1773                                   NULL,
1774                                   0,
1775                                   &stIoStatus);
1776
1777                     if( !NT_SUCCESS( stIoStatus.Status))
1778                     {
1779
1780                         AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
1781                                       AFS_TRACE_LEVEL_ERROR,
1782                                       "AFSInvalidateObject CcFlushCache failure FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
1783                                       (*ppObjectInfo)->FileId.Cell,
1784                                       (*ppObjectInfo)->FileId.Volume,
1785                                       (*ppObjectInfo)->FileId.Vnode,
1786                                       (*ppObjectInfo)->FileId.Unique,
1787                                       stIoStatus.Status,
1788                                       stIoStatus.Information);
1789
1790                         ntStatus = stIoStatus.Status;
1791                     }
1792
1793
1794                     if ( (*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
1795                     {
1796
1797                         if ( !CcPurgeCacheSection( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectPointers,
1798                                                    NULL,
1799                                                    0,
1800                                                    FALSE))
1801                         {
1802
1803                             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
1804                                           AFS_TRACE_LEVEL_WARNING,
1805                                           "AFSInvalidateObject CcPurgeCacheSection failure FID %08lX-%08lX-%08lX-%08lX\n",
1806                                           (*ppObjectInfo)->FileId.Cell,
1807                                           (*ppObjectInfo)->FileId.Volume,
1808                                           (*ppObjectInfo)->FileId.Vnode,
1809                                           (*ppObjectInfo)->FileId.Unique);
1810
1811                             SetFlag( (*ppObjectInfo)->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
1812                         }
1813                     }
1814                 }
1815                 __except( EXCEPTION_EXECUTE_HANDLER)
1816                 {
1817
1818                     ntStatus = GetExceptionCode();
1819
1820                     AFSDbgLogMsg( 0,
1821                                   0,
1822                                   "EXCEPTION - AFSInvalidateObject Cc FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
1823                                   (*ppObjectInfo)->FileId.Cell,
1824                                   (*ppObjectInfo)->FileId.Volume,
1825                                   (*ppObjectInfo)->FileId.Vnode,
1826                                   (*ppObjectInfo)->FileId.Unique,
1827                                   ntStatus);
1828
1829                     SetFlag( (*ppObjectInfo)->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
1830                 }
1831
1832                 AFSReleaseResource( &(*ppObjectInfo)->Fcb->NPFcb->SectionObjectResource);
1833
1834                 //
1835                 // Clear out the extents
1836                 // Get rid of them (note this involves waiting
1837                 // for any writes or reads to the cache to complete)
1838                 //
1839
1840                 AFSTearDownFcbExtents( (*ppObjectInfo)->Fcb,
1841                                        NULL);
1842             }
1843
1844             (*ppObjectInfo)->DataVersion.QuadPart = (ULONGLONG)-1;
1845
1846
1847             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE)
1848             {
1849
1850                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1851                               AFS_TRACE_LEVEL_VERBOSE,
1852                               "AFSInvalidateObject Setting VERIFY_DATA flag on fid %08lX-%08lX-%08lX-%08lX\n",
1853                               (*ppObjectInfo)->FileId.Cell,
1854                               (*ppObjectInfo)->FileId.Volume,
1855                               (*ppObjectInfo)->FileId.Vnode,
1856                               (*ppObjectInfo)->FileId.Unique);
1857
1858                 SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
1859             }
1860
1861             // Fall through to the default processing
1862         }
1863
1864     default:
1865         {
1866
1867             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1868             {
1869                 ulFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
1870             }
1871             else
1872             {
1873                 ulFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
1874             }
1875
1876             if( Reason == AFS_INVALIDATE_CREDS)
1877             {
1878                 ulFilter |= FILE_NOTIFY_CHANGE_SECURITY;
1879             }
1880
1881             if( Reason == AFS_INVALIDATE_DATA_VERSION)
1882             {
1883                 ulFilter |= FILE_NOTIFY_CHANGE_SIZE | FILE_NOTIFY_CHANGE_LAST_WRITE;
1884             }
1885             else
1886             {
1887                 ulFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1888             }
1889
1890             if( (*ppObjectInfo)->FileType == AFS_FILE_TYPE_DIRECTORY)
1891             {
1892
1893                 AFSFsRtlNotifyFullReportChange( (*ppObjectInfo),
1894                                                 NULL,
1895                                                 ulFilter,
1896                                                 FILE_ACTION_MODIFIED);
1897             }
1898             else if ( pParentObjectInfo != NULL)
1899             {
1900
1901                 AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1902                                                 NULL,
1903                                                 ulFilter,
1904                                                 FILE_ACTION_MODIFIED);
1905             }
1906
1907             //
1908             // Indicate this node requires re-evaluation for the remaining reasons
1909             //
1910
1911             (*ppObjectInfo)->Expiration.QuadPart = 0;
1912
1913             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1914                           AFS_TRACE_LEVEL_VERBOSE,
1915                           "AFSInvalidateObject Setting VERIFY flag on fid %08lX-%08lX-%08lX-%08lX\n",
1916                           (*ppObjectInfo)->FileId.Cell,
1917                           (*ppObjectInfo)->FileId.Volume,
1918                           (*ppObjectInfo)->FileId.Vnode,
1919                           (*ppObjectInfo)->FileId.Unique);
1920
1921             SetFlag( (*ppObjectInfo)->Flags, AFS_OBJECT_FLAGS_VERIFY);
1922
1923             if( Reason == AFS_INVALIDATE_DATA_VERSION ||
1924                 (*ppObjectInfo)->FileType == AFS_FILE_TYPE_FILE &&
1925                 ( Reason == AFS_INVALIDATE_CALLBACK ||
1926                   Reason == AFS_INVALIDATE_EXPIRED))
1927             {
1928                 if ( NT_SUCCESS( AFSQueueInvalidateObject( (*ppObjectInfo),
1929                                                            AFS_INVALIDATE_DATA_VERSION)))
1930                 {
1931
1932                     (*ppObjectInfo) = NULL; // We'll dec the count in the worker item
1933                 }
1934             }
1935
1936             break;
1937         }
1938     }
1939
1940   try_exit:
1941
1942     if ( pParentObjectInfo != NULL)
1943     {
1944
1945         AFSReleaseObjectInfo( &pParentObjectInfo);
1946     }
1947
1948     return ntStatus;
1949 }
1950
1951 NTSTATUS
1952 AFSInvalidateCache( IN AFSInvalidateCacheCB *InvalidateCB)
1953 {
1954
1955     NTSTATUS ntStatus = STATUS_SUCCESS;
1956     AFSVolumeCB *pVolumeCB = NULL;
1957     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
1958     ULONGLONG   ullIndex = 0;
1959     AFSObjectInfoCB *pObjectInfo = NULL;
1960     LONG lCount;
1961
1962     __Enter
1963     {
1964
1965         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1966                       AFS_TRACE_LEVEL_VERBOSE,
1967                       "AFSInvalidateCache Invalidation FID %08lX-%08lX-%08lX-%08lX Type %d WholeVolume %d Reason %d\n",
1968                       InvalidateCB->FileID.Cell,
1969                       InvalidateCB->FileID.Volume,
1970                       InvalidateCB->FileID.Vnode,
1971                       InvalidateCB->FileID.Unique,
1972                       InvalidateCB->FileType,
1973                       InvalidateCB->WholeVolume,
1974                       InvalidateCB->Reason);
1975
1976         //
1977         // Need to locate the Fcb for the directory to purge
1978         //
1979
1980         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1981                       AFS_TRACE_LEVEL_VERBOSE,
1982                       "AFSInvalidateCache Acquiring RDR VolumeTreeLock lock %p SHARED %08lX\n",
1983                       &pDevExt->Specific.RDR.VolumeTreeLock,
1984                       PsGetCurrentThread());
1985
1986         //
1987         // Starve any exclusive waiters on this paticular call
1988         //
1989
1990         AFSAcquireSharedStarveExclusive( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
1991
1992         //
1993         // Locate the volume node
1994         //
1995
1996         ullIndex = AFSCreateHighIndex( &InvalidateCB->FileID);
1997
1998         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
1999                                        ullIndex,
2000                                        (AFSBTreeEntry **)&pVolumeCB);
2001
2002         if( pVolumeCB != NULL)
2003         {
2004
2005             lCount = AFSVolumeIncrement( pVolumeCB,
2006                                          AFS_VOLUME_REFERENCE_INVALIDATE);
2007
2008             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2009                           AFS_TRACE_LEVEL_VERBOSE,
2010                           "AFSInvalidateCache Increment count on volume %p Cnt %d\n",
2011                           pVolumeCB,
2012                           lCount);
2013         }
2014
2015         AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
2016
2017         if( !NT_SUCCESS( ntStatus) ||
2018             pVolumeCB == NULL)
2019         {
2020
2021             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2022                           AFS_TRACE_LEVEL_WARNING,
2023                           "AFSInvalidateCache Invalidation FAILURE Unable to locate volume node FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2024                           InvalidateCB->FileID.Cell,
2025                           InvalidateCB->FileID.Volume,
2026                           InvalidateCB->FileID.Vnode,
2027                           InvalidateCB->FileID.Unique,
2028                           ntStatus);
2029
2030             try_return( ntStatus = STATUS_SUCCESS);
2031         }
2032
2033         //
2034         // If this is a whole volume invalidation then go do it now
2035         //
2036
2037         if( InvalidateCB->WholeVolume)
2038         {
2039
2040             ntStatus = AFSInvalidateVolume( pVolumeCB,
2041                                             InvalidateCB->Reason);
2042
2043             try_return( ntStatus);
2044         }
2045
2046         AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
2047                           TRUE);
2048
2049         if ( AFSIsVolumeFID( &InvalidateCB->FileID))
2050         {
2051
2052             pObjectInfo = &pVolumeCB->ObjectInformation;
2053         }
2054         else
2055         {
2056
2057             ullIndex = AFSCreateLowIndex( &InvalidateCB->FileID);
2058
2059             ntStatus = AFSLocateHashEntry( pVolumeCB->ObjectInfoTree.TreeHead,
2060                                            ullIndex,
2061                                            (AFSBTreeEntry **)&pObjectInfo);
2062         }
2063
2064         if( pObjectInfo != NULL)
2065         {
2066
2067             //
2068             // Reference the node so it won't be torn down
2069             //
2070
2071             lCount = AFSObjectInfoIncrement( pObjectInfo,
2072                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2073
2074             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2075                           AFS_TRACE_LEVEL_VERBOSE,
2076                           "AFSInvalidateCache Increment count on object %p Cnt %d\n",
2077                           pObjectInfo,
2078                           lCount);
2079         }
2080
2081         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
2082
2083         if( !NT_SUCCESS( ntStatus) ||
2084             pObjectInfo == NULL)
2085         {
2086
2087             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2088                           AFS_TRACE_LEVEL_VERBOSE,
2089                           "AFSInvalidateCache Invalidation FAILURE Unable to locate object FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2090                           InvalidateCB->FileID.Cell,
2091                           InvalidateCB->FileID.Volume,
2092                           InvalidateCB->FileID.Vnode,
2093                           InvalidateCB->FileID.Unique,
2094                           ntStatus);
2095
2096             try_return( ntStatus = STATUS_SUCCESS);
2097         }
2098
2099         AFSInvalidateObject( &pObjectInfo,
2100                              InvalidateCB->Reason);
2101
2102 try_exit:
2103
2104         if( pObjectInfo != NULL)
2105         {
2106
2107             lCount = AFSObjectInfoDecrement( pObjectInfo,
2108                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2109
2110             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2111                           AFS_TRACE_LEVEL_VERBOSE,
2112                           "AFSInvalidateCache Decrement count on object %p Cnt %d\n",
2113                           pObjectInfo,
2114                           lCount);
2115         }
2116
2117         if ( pVolumeCB != NULL)
2118         {
2119
2120             lCount = AFSVolumeDecrement( pVolumeCB,
2121                                          AFS_VOLUME_REFERENCE_INVALIDATE);
2122
2123             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2124                           AFS_TRACE_LEVEL_VERBOSE,
2125                           "AFSInvalidateCache Decrement count on volume %p Cnt %d\n",
2126                           pVolumeCB,
2127                           lCount);
2128         }
2129     }
2130
2131     return ntStatus;
2132 }
2133
2134 BOOLEAN
2135 AFSIsChildOfParent( IN AFSFcb *Dcb,
2136                     IN AFSFcb *Fcb)
2137 {
2138
2139     BOOLEAN bIsChild = FALSE;
2140     AFSFcb *pCurrentFcb = Fcb;
2141     AFSObjectInfoCB * pParentObjectInfo = NULL;
2142
2143     while( pCurrentFcb != NULL)
2144     {
2145
2146         if( BooleanFlagOn( pCurrentFcb->ObjectInformation->Flags, AFS_OBJECT_FLAGS_PARENT_FID) &&
2147             AFSIsEqualFID( &pCurrentFcb->ObjectInformation->ParentFileId, &Dcb->ObjectInformation->FileId))
2148         {
2149
2150             bIsChild = TRUE;
2151
2152             break;
2153         }
2154
2155         pParentObjectInfo = AFSFindObjectInfo( pCurrentFcb->ObjectInformation->VolumeCB,
2156                                                &pCurrentFcb->ObjectInformation->ParentFileId);
2157
2158         if ( pParentObjectInfo != NULL)
2159         {
2160
2161             pCurrentFcb = pParentObjectInfo->Fcb;
2162
2163             AFSReleaseObjectInfo( &pParentObjectInfo);
2164         }
2165         else
2166         {
2167
2168             pCurrentFcb = NULL;
2169         }
2170     }
2171
2172     return bIsChild;
2173 }
2174
2175 inline
2176 ULONGLONG
2177 AFSCreateHighIndex( IN AFSFileID *FileID)
2178 {
2179
2180     ULONGLONG ullIndex = 0;
2181
2182     ullIndex = (((ULONGLONG)FileID->Cell << 32) | FileID->Volume);
2183
2184     return ullIndex;
2185 }
2186
2187 inline
2188 ULONGLONG
2189 AFSCreateLowIndex( IN AFSFileID *FileID)
2190 {
2191
2192     ULONGLONG ullIndex = 0;
2193
2194     ullIndex = (((ULONGLONG)FileID->Vnode << 32) | FileID->Unique);
2195
2196     return ullIndex;
2197 }
2198
2199 BOOLEAN
2200 AFSCheckAccess( IN ACCESS_MASK DesiredAccess,
2201                 IN ACCESS_MASK GrantedAccess,
2202                 IN BOOLEAN DirectoryEntry)
2203 {
2204
2205     BOOLEAN bAccessGranted = TRUE;
2206
2207     //
2208     // Check if we are asking for read/write and granted only read only
2209     // NOTE: There will be more checks here
2210     //
2211
2212     if( !AFSCheckForReadOnlyAccess( DesiredAccess,
2213                                     DirectoryEntry) &&
2214         AFSCheckForReadOnlyAccess( GrantedAccess,
2215                                    DirectoryEntry))
2216     {
2217
2218         bAccessGranted = FALSE;
2219     }
2220
2221     return bAccessGranted;
2222 }
2223
2224 NTSTATUS
2225 AFSGetDriverStatus( IN AFSDriverStatusRespCB *DriverStatus)
2226 {
2227
2228     NTSTATUS         ntStatus = STATUS_SUCCESS;
2229     AFSDeviceExt    *pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
2230
2231     //
2232     // Start with read
2233     //
2234
2235     DriverStatus->Status = AFS_DRIVER_STATUS_READY;
2236
2237     if( AFSGlobalRoot == NULL)
2238     {
2239
2240         //
2241         // We are not ready
2242         //
2243
2244         DriverStatus->Status = AFS_DRIVER_STATUS_NOT_READY;
2245     }
2246
2247     if( pControlDevExt->Specific.Control.CommServiceCB.IrpPoolControlFlag != POOL_ACTIVE)
2248     {
2249
2250         //
2251         // No service yet
2252         //
2253
2254         DriverStatus->Status = AFS_DRIVER_STATUS_NO_SERVICE;
2255     }
2256
2257     return ntStatus;
2258 }
2259
2260 NTSTATUS
2261 AFSSubstituteSysName( IN UNICODE_STRING *ComponentName,
2262                       IN UNICODE_STRING *SubstituteName,
2263                       IN ULONG StringIndex)
2264 {
2265
2266     NTSTATUS ntStatus = STATUS_SUCCESS;
2267     AFSDeviceExt    *pControlDevExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
2268     AFSSysNameCB    *pSysName = NULL;
2269     ERESOURCE       *pSysNameLock = NULL;
2270     ULONG            ulIndex = 1;
2271     USHORT           usIndex = 0;
2272     UNICODE_STRING   uniSysName;
2273
2274     __Enter
2275     {
2276
2277 #if defined(_WIN64)
2278
2279         if( IoIs32bitProcess( NULL))
2280         {
2281
2282             pSysNameLock = &pControlDevExt->Specific.Control.SysName32ListLock;
2283
2284             pSysName = pControlDevExt->Specific.Control.SysName32ListHead;
2285         }
2286         else
2287         {
2288
2289             pSysNameLock = &pControlDevExt->Specific.Control.SysName64ListLock;
2290
2291             pSysName = pControlDevExt->Specific.Control.SysName64ListHead;
2292         }
2293 #else
2294
2295         pSysNameLock = &pControlDevExt->Specific.Control.SysName32ListLock;
2296
2297         pSysName = pControlDevExt->Specific.Control.SysName32ListHead;
2298
2299 #endif
2300
2301         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2302                       AFS_TRACE_LEVEL_VERBOSE,
2303                       "AFSSubstituteSysName Acquiring SysName lock %p SHARED %08lX\n",
2304                       pSysNameLock,
2305                       PsGetCurrentThread());
2306
2307         AFSAcquireShared( pSysNameLock,
2308                           TRUE);
2309
2310         //
2311         // Find where we are in the list
2312         //
2313
2314         while( pSysName != NULL &&
2315             ulIndex < StringIndex)
2316         {
2317
2318             pSysName = pSysName->fLink;
2319
2320             ulIndex++;
2321         }
2322
2323         if( pSysName == NULL)
2324         {
2325
2326             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2327                           AFS_TRACE_LEVEL_VERBOSE_2,
2328                           "AFSSubstituteSysName No sysname %wZ Status %08lX\n",
2329                           &ComponentName,
2330                           STATUS_OBJECT_NAME_NOT_FOUND);
2331
2332             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
2333         }
2334
2335         RtlInitUnicodeString( &uniSysName,
2336                               L"@SYS");
2337         //
2338         // If it is a full component of @SYS then just substitue the
2339         // name in
2340         //
2341
2342         if( RtlCompareUnicodeString( &uniSysName,
2343                                      ComponentName,
2344                                      TRUE) == 0)
2345         {
2346
2347             SubstituteName->Length = pSysName->SysName.Length;
2348             SubstituteName->MaximumLength = SubstituteName->Length;
2349
2350             SubstituteName->Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2351                                                                         SubstituteName->Length,
2352                                                                         AFS_SUBST_BUFFER_TAG);
2353
2354             if( SubstituteName->Buffer == NULL)
2355             {
2356
2357                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2358             }
2359
2360             RtlCopyMemory( SubstituteName->Buffer,
2361                            pSysName->SysName.Buffer,
2362                            pSysName->SysName.Length);
2363         }
2364         else
2365         {
2366
2367             usIndex = 0;
2368
2369             while( ComponentName->Buffer[ usIndex] != L'@')
2370             {
2371
2372                 usIndex++;
2373             }
2374
2375             SubstituteName->Length = (usIndex * sizeof( WCHAR)) + pSysName->SysName.Length;
2376             SubstituteName->MaximumLength = SubstituteName->Length;
2377
2378             SubstituteName->Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2379                                                                         SubstituteName->Length,
2380                                                                         AFS_SUBST_BUFFER_TAG);
2381
2382             if( SubstituteName->Buffer == NULL)
2383             {
2384
2385                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2386             }
2387
2388             RtlCopyMemory( SubstituteName->Buffer,
2389                            ComponentName->Buffer,
2390                            usIndex * sizeof( WCHAR));
2391
2392             RtlCopyMemory( &SubstituteName->Buffer[ usIndex],
2393                            pSysName->SysName.Buffer,
2394                            pSysName->SysName.Length);
2395         }
2396
2397 try_exit:
2398
2399         AFSReleaseResource( pSysNameLock);
2400     }
2401
2402     return ntStatus;
2403 }
2404
2405 NTSTATUS
2406 AFSSubstituteNameInPath( IN OUT UNICODE_STRING *FullPathName,
2407                          IN OUT UNICODE_STRING *ComponentName,
2408                          IN UNICODE_STRING *SubstituteName,
2409                          IN OUT UNICODE_STRING *RemainingPath,
2410                          IN BOOLEAN FreePathName)
2411 {
2412
2413     NTSTATUS ntStatus = STATUS_SUCCESS;
2414     UNICODE_STRING uniPathName;
2415     USHORT usPrefixNameLen = 0;
2416     SHORT  sNameLenDelta = 0;
2417
2418     __Enter
2419     {
2420
2421         //
2422         // If the passed in name can handle the additional length
2423         // then just moves things around
2424         //
2425
2426         sNameLenDelta = SubstituteName->Length - ComponentName->Length;
2427
2428         usPrefixNameLen = (USHORT)(ComponentName->Buffer - FullPathName->Buffer);
2429
2430         if( FullPathName->MaximumLength > FullPathName->Length + sNameLenDelta)
2431         {
2432
2433             if( FullPathName->Length > usPrefixNameLen + ComponentName->Length)
2434             {
2435
2436                 RtlMoveMemory( &FullPathName->Buffer[ ((usPrefixNameLen*sizeof( WCHAR) + SubstituteName->Length)/sizeof( WCHAR))],
2437                                &FullPathName->Buffer[ ((usPrefixNameLen*sizeof( WCHAR) + ComponentName->Length)/sizeof( WCHAR))],
2438                                FullPathName->Length - usPrefixNameLen*sizeof( WCHAR) - ComponentName->Length);
2439             }
2440
2441             RtlCopyMemory( &FullPathName->Buffer[ usPrefixNameLen],
2442                            SubstituteName->Buffer,
2443                            SubstituteName->Length);
2444
2445             FullPathName->Length += sNameLenDelta;
2446
2447             ComponentName->Length += sNameLenDelta;
2448
2449             ComponentName->MaximumLength = ComponentName->Length;
2450
2451             if ( RemainingPath->Buffer)
2452             {
2453
2454                 RemainingPath->Buffer += sNameLenDelta/sizeof( WCHAR);
2455             }
2456
2457             try_return( ntStatus);
2458         }
2459
2460         //
2461         // Need to re-allocate the buffer
2462         //
2463
2464         uniPathName.Length = FullPathName->Length -
2465                                          ComponentName->Length +
2466                                          SubstituteName->Length;
2467
2468         uniPathName.MaximumLength = FullPathName->MaximumLength + PAGE_SIZE;
2469
2470         uniPathName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2471                                                                 uniPathName.MaximumLength,
2472                                                                 AFS_NAME_BUFFER_FOUR_TAG);
2473
2474         if( uniPathName.Buffer == NULL)
2475         {
2476
2477             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2478         }
2479
2480         usPrefixNameLen = (USHORT)(ComponentName->Buffer - FullPathName->Buffer);
2481
2482         usPrefixNameLen *= sizeof( WCHAR);
2483
2484         RtlZeroMemory( uniPathName.Buffer,
2485                        uniPathName.MaximumLength);
2486
2487         RtlCopyMemory( uniPathName.Buffer,
2488                        FullPathName->Buffer,
2489                        usPrefixNameLen);
2490
2491         RtlCopyMemory( &uniPathName.Buffer[ (usPrefixNameLen/sizeof( WCHAR))],
2492                        SubstituteName->Buffer,
2493                        SubstituteName->Length);
2494
2495         if( FullPathName->Length > usPrefixNameLen + ComponentName->Length)
2496         {
2497
2498             RtlCopyMemory( &uniPathName.Buffer[ (usPrefixNameLen + SubstituteName->Length)/sizeof( WCHAR)],
2499                            &FullPathName->Buffer[ (usPrefixNameLen + ComponentName->Length)/sizeof( WCHAR)],
2500                            FullPathName->Length - usPrefixNameLen - ComponentName->Length);
2501         }
2502
2503         ComponentName->Buffer = uniPathName.Buffer + (ComponentName->Buffer - FullPathName->Buffer);
2504
2505         ComponentName->Length += sNameLenDelta;
2506
2507         ComponentName->MaximumLength = ComponentName->Length;
2508
2509         if ( RemainingPath->Buffer)
2510         {
2511
2512             RemainingPath->Buffer = uniPathName.Buffer
2513                 + (RemainingPath->Buffer - FullPathName->Buffer)
2514                 + sNameLenDelta/sizeof( WCHAR);
2515         }
2516
2517         if( FreePathName)
2518         {
2519             AFSExFreePoolWithTag( FullPathName->Buffer, 0);
2520         }
2521
2522         *FullPathName = uniPathName;
2523
2524 try_exit:
2525
2526         NOTHING;
2527     }
2528
2529     return ntStatus;
2530 }
2531
2532 NTSTATUS
2533 AFSInvalidateVolume( IN AFSVolumeCB *VolumeCB,
2534                      IN ULONG Reason)
2535 {
2536
2537     NTSTATUS ntStatus = STATUS_SUCCESS;
2538     AFSObjectInfoCB *pCurrentObject = NULL;
2539     AFSObjectInfoCB *pNextObject = NULL;
2540     LONG lCount;
2541
2542     __Enter
2543     {
2544
2545         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2546                       AFS_TRACE_LEVEL_VERBOSE,
2547                       "AFSInvalidateVolume Invalidate volume fid %08lX-%08lX-%08lX-%08lX Reason %08lX\n",
2548                       VolumeCB->ObjectInformation.FileId.Cell,
2549                       VolumeCB->ObjectInformation.FileId.Volume,
2550                       VolumeCB->ObjectInformation.FileId.Vnode,
2551                       VolumeCB->ObjectInformation.FileId.Unique,
2552                       Reason);
2553
2554         //
2555         // Depending on the reason for invalidation then perform work on the node
2556         //
2557
2558         switch( Reason)
2559         {
2560
2561             case AFS_INVALIDATE_DELETED:
2562             {
2563
2564                 //
2565                 // Mark this volume as invalid
2566                 //
2567
2568                 SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID);
2569
2570                 SetFlag( VolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE);
2571
2572                 break;
2573             }
2574         }
2575
2576         //
2577         // Invalidate the volume root directory
2578         //
2579
2580         pCurrentObject = &VolumeCB->ObjectInformation;
2581
2582         if ( pCurrentObject )
2583         {
2584
2585             lCount = AFSObjectInfoIncrement( pCurrentObject,
2586                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2587
2588             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2589                           AFS_TRACE_LEVEL_VERBOSE,
2590                           "AFSInvalidateVolumeObjects Increment count on object %p Cnt %d\n",
2591                           pCurrentObject,
2592                           lCount);
2593
2594             AFSInvalidateObject( &pCurrentObject,
2595                                  Reason);
2596
2597             if ( pCurrentObject)
2598             {
2599
2600                 lCount = AFSObjectInfoDecrement( pCurrentObject,
2601                                                  AFS_OBJECT_REFERENCE_INVALIDATION);
2602
2603                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2604                               AFS_TRACE_LEVEL_VERBOSE,
2605                               "AFSInvalidateVolumeObjects Decrement count on object %p Cnt %d\n",
2606                               pCurrentObject,
2607                               lCount);
2608             }
2609         }
2610
2611         //
2612         // Apply invalidation to all other volume objects
2613         //
2614
2615         AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2616                           TRUE);
2617
2618         pCurrentObject = VolumeCB->ObjectInfoListHead;
2619
2620         if ( pCurrentObject)
2621         {
2622
2623             //
2624             // Reference the node so it won't be torn down
2625             //
2626
2627             lCount = AFSObjectInfoIncrement( pCurrentObject,
2628                                              AFS_OBJECT_REFERENCE_INVALIDATION);
2629
2630             AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2631                           AFS_TRACE_LEVEL_VERBOSE,
2632                           "AFSInvalidateVolumeObjects Increment count on object %p Cnt %d\n",
2633                           pCurrentObject,
2634                           lCount);
2635         }
2636
2637         while( pCurrentObject != NULL)
2638         {
2639
2640             pNextObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
2641
2642             if ( pNextObject)
2643             {
2644
2645                 //
2646                 // Reference the node so it won't be torn down
2647                 //
2648
2649                 lCount = AFSObjectInfoIncrement( pNextObject,
2650                                                  AFS_OBJECT_REFERENCE_INVALIDATION);
2651
2652                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2653                               AFS_TRACE_LEVEL_VERBOSE,
2654                               "AFSInvalidateVolumeObjects Increment count on object %p Cnt %d\n",
2655                               pNextObject,
2656                               lCount);
2657             }
2658
2659             AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2660
2661             AFSInvalidateObject( &pCurrentObject,
2662                                  Reason);
2663
2664             if ( pCurrentObject )
2665             {
2666
2667                 lCount = AFSObjectInfoDecrement( pCurrentObject,
2668                                                  AFS_OBJECT_REFERENCE_INVALIDATION);
2669
2670                 AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2671                               AFS_TRACE_LEVEL_VERBOSE,
2672                               "AFSInvalidateVolumeObjects Decrement count on object %p Cnt %d\n",
2673                               pCurrentObject,
2674                               lCount);
2675             }
2676
2677             AFSAcquireShared( VolumeCB->ObjectInfoTree.TreeLock,
2678                               TRUE);
2679
2680             pCurrentObject = pNextObject;
2681         }
2682
2683         AFSReleaseResource( VolumeCB->ObjectInfoTree.TreeLock);
2684     }
2685
2686     return ntStatus;
2687 }
2688
2689 VOID
2690 AFSInvalidateAllVolumes( VOID)
2691 {
2692     AFSVolumeCB *pVolumeCB = NULL;
2693     AFSVolumeCB *pNextVolumeCB = NULL;
2694     AFSDeviceExt *pRDRDeviceExt = NULL;
2695     LONG lCount;
2696
2697     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2698
2699     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2700                   AFS_TRACE_LEVEL_VERBOSE,
2701                   "AFSInvalidateAllVolumes Acquiring RDR VolumeListLock lock %p SHARED %08lX\n",
2702                   &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2703                   PsGetCurrentThread());
2704
2705     AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2706                       TRUE);
2707
2708     pVolumeCB = pRDRDeviceExt->Specific.RDR.VolumeListHead;
2709
2710     if ( pVolumeCB)
2711     {
2712
2713         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2714                       AFS_TRACE_LEVEL_VERBOSE,
2715                       "AFSInvalidateAllVolumes Acquiring VolumeRoot ObjectInfoTree lock %p SHARED %08lX\n",
2716                       pVolumeCB->ObjectInfoTree.TreeLock,
2717                       PsGetCurrentThread());
2718
2719         lCount = AFSVolumeIncrement( pVolumeCB,
2720                                      AFS_VOLUME_REFERENCE_INVALIDATE);
2721
2722         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2723                       AFS_TRACE_LEVEL_VERBOSE,
2724                       "AFSInvalidateAllVolumes Increment count on volume %p Cnt %d\n",
2725                       pVolumeCB,
2726                       lCount);
2727     }
2728
2729     while( pVolumeCB != NULL)
2730     {
2731
2732         pNextVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
2733
2734         if ( pNextVolumeCB)
2735         {
2736
2737             lCount = AFSVolumeIncrement( pNextVolumeCB,
2738                                          AFS_VOLUME_REFERENCE_INVALIDATE);
2739
2740             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2741                           AFS_TRACE_LEVEL_VERBOSE,
2742                           "AFSInvalidateAllVolumes Increment count on volume %p Cnt %d\n",
2743                           pVolumeCB,
2744                           lCount);
2745         }
2746
2747         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
2748
2749         // do I need to hold the volume lock here?
2750
2751         AFSInvalidateVolume( pVolumeCB, AFS_INVALIDATE_EXPIRED);
2752
2753         AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
2754                           TRUE);
2755
2756         lCount = AFSVolumeDecrement( pVolumeCB,
2757                                      AFS_VOLUME_REFERENCE_INVALIDATE);
2758
2759         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2760                       AFS_TRACE_LEVEL_VERBOSE,
2761                       "AFSInvalidateAllVolumes Decrement count on volume %p Cnt %d\n",
2762                       pVolumeCB,
2763                       lCount);
2764
2765         pVolumeCB = pNextVolumeCB;
2766     }
2767
2768     AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
2769 }
2770
2771 NTSTATUS
2772 AFSVerifyEntry( IN GUID *AuthGroup,
2773                 IN AFSDirectoryCB *DirEntry)
2774 {
2775
2776     NTSTATUS ntStatus = STATUS_SUCCESS;
2777     AFSDirEnumEntry *pDirEnumEntry = NULL;
2778     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
2779     IO_STATUS_BLOCK stIoStatus;
2780
2781     __Enter
2782     {
2783
2784         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2785                       AFS_TRACE_LEVEL_VERBOSE_2,
2786                       "AFSVerifyEntry Verifying entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2787                       &DirEntry->NameInformation.FileName,
2788                       pObjectInfo->FileId.Cell,
2789                       pObjectInfo->FileId.Volume,
2790                       pObjectInfo->FileId.Vnode,
2791                       pObjectInfo->FileId.Unique);
2792
2793         ntStatus = AFSEvaluateTargetByID( pObjectInfo,
2794                                           AuthGroup,
2795                                           FALSE,
2796                                           &pDirEnumEntry);
2797
2798         if( !NT_SUCCESS( ntStatus))
2799         {
2800
2801             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2802                           AFS_TRACE_LEVEL_ERROR,
2803                           "AFSVerifyEntry Evaluate Target failed %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
2804                           &DirEntry->NameInformation.FileName,
2805                           pObjectInfo->FileId.Cell,
2806                           pObjectInfo->FileId.Volume,
2807                           pObjectInfo->FileId.Vnode,
2808                           pObjectInfo->FileId.Unique,
2809                           ntStatus);
2810
2811             try_return( ntStatus);
2812         }
2813
2814         //
2815         // Check the data version of the file
2816         //
2817
2818         if( pObjectInfo->DataVersion.QuadPart == pDirEnumEntry->DataVersion.QuadPart)
2819         {
2820             if ( !BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
2821             {
2822
2823                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2824                               AFS_TRACE_LEVEL_VERBOSE,
2825                               "AFSVerifyEntry No DV change %I64X for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2826                               pObjectInfo->DataVersion.QuadPart,
2827                               &DirEntry->NameInformation.FileName,
2828                               pObjectInfo->FileId.Cell,
2829                               pObjectInfo->FileId.Volume,
2830                               pObjectInfo->FileId.Vnode,
2831                               pObjectInfo->FileId.Unique);
2832
2833                 //
2834                 // We are ok, just get out
2835                 //
2836
2837                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2838
2839                 try_return( ntStatus = STATUS_SUCCESS);
2840             }
2841         }
2842
2843         //
2844         // New data version so we will need to process the node based on the type
2845         //
2846
2847         switch( pDirEnumEntry->FileType)
2848         {
2849
2850             case AFS_FILE_TYPE_MOUNTPOINT:
2851             {
2852
2853                 //
2854                 // For a mount point we need to ensure the target is the same
2855                 //
2856
2857                 if( !AFSIsEqualFID( &pObjectInfo->TargetFileId,
2858                                     &pDirEnumEntry->TargetFileId))
2859                 {
2860
2861                 }
2862
2863                 //
2864                 // Update the metadata for the entry
2865                 //
2866
2867                 ntStatus = AFSUpdateMetaData( DirEntry,
2868                                               pDirEnumEntry);
2869
2870                 if( NT_SUCCESS( ntStatus))
2871                 {
2872
2873                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2874                 }
2875
2876                 break;
2877             }
2878
2879             case AFS_FILE_TYPE_SYMLINK:
2880             {
2881
2882                 //
2883                 // Update the metadata for the entry
2884                 //
2885
2886                 ntStatus = AFSUpdateMetaData( DirEntry,
2887                                               pDirEnumEntry);
2888
2889                 if( NT_SUCCESS( ntStatus))
2890                 {
2891
2892                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2893                 }
2894
2895                 break;
2896             }
2897
2898             case AFS_FILE_TYPE_FILE:
2899             {
2900                 FILE_OBJECT * pCCFileObject = NULL;
2901                 BOOLEAN bPurgeExtents = FALSE;
2902
2903                 if ( pObjectInfo->DataVersion.QuadPart != pDirEnumEntry->DataVersion.QuadPart)
2904                 {
2905
2906                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2907                                   AFS_TRACE_LEVEL_VERBOSE,
2908                                   "AFSVerifyEntry DV Change %wZ FID %08lX-%08lX-%08lX-%08lX (%08lX != %08lX)\n",
2909                                   &DirEntry->NameInformation.FileName,
2910                                   pObjectInfo->FileId.Cell,
2911                                   pObjectInfo->FileId.Volume,
2912                                   pObjectInfo->FileId.Vnode,
2913                                   pObjectInfo->FileId.Unique,
2914                                   pObjectInfo->DataVersion.LowPart,
2915                                   pDirEnumEntry->DataVersion.LowPart
2916                                   );
2917
2918                     bPurgeExtents = TRUE;
2919                 }
2920
2921                 if ( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA))
2922                 {
2923
2924                     bPurgeExtents = TRUE;
2925
2926                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2927                                   AFS_TRACE_LEVEL_VERBOSE,
2928                                   "AFSVerifyEntry Clearing VERIFY_DATA flag %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2929                                   &DirEntry->NameInformation.FileName,
2930                                   pObjectInfo->FileId.Cell,
2931                                   pObjectInfo->FileId.Volume,
2932                                   pObjectInfo->FileId.Vnode,
2933                                   pObjectInfo->FileId.Unique);
2934
2935                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY_DATA);
2936                 }
2937
2938                 if( pObjectInfo->Fcb != NULL)
2939                 {
2940
2941                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2942                                   AFS_TRACE_LEVEL_VERBOSE,
2943                                   "AFSVerifyEntry Flush/purge entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2944                                   &DirEntry->NameInformation.FileName,
2945                                   pObjectInfo->FileId.Cell,
2946                                   pObjectInfo->FileId.Volume,
2947                                   pObjectInfo->FileId.Vnode,
2948                                   pObjectInfo->FileId.Unique);
2949
2950                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
2951                                     TRUE);
2952
2953                     __try
2954                     {
2955
2956                         CcFlushCache( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
2957                                       NULL,
2958                                       0,
2959                                       &stIoStatus);
2960
2961                         if( !NT_SUCCESS( stIoStatus.Status))
2962                         {
2963
2964                             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2965                                           AFS_TRACE_LEVEL_ERROR,
2966                                           "AFSVerifyEntry CcFlushCache failure %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX Bytes 0x%08lX\n",
2967                                           &DirEntry->NameInformation.FileName,
2968                                           pObjectInfo->FileId.Cell,
2969                                           pObjectInfo->FileId.Volume,
2970                                           pObjectInfo->FileId.Vnode,
2971                                           pObjectInfo->FileId.Unique,
2972                                           stIoStatus.Status,
2973                                           stIoStatus.Information);
2974
2975                             ntStatus = stIoStatus.Status;
2976                         }
2977
2978                         if ( bPurgeExtents &&
2979                              pObjectInfo->Fcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
2980                         {
2981
2982                             if ( !CcPurgeCacheSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
2983                                                        NULL,
2984                                                        0,
2985                                                        FALSE))
2986                             {
2987
2988                                 AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2989                                               AFS_TRACE_LEVEL_WARNING,
2990                                               "AFSVerifyEntry CcPurgeCacheSection failure %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2991                                               &DirEntry->NameInformation.FileName,
2992                                               pObjectInfo->FileId.Cell,
2993                                               pObjectInfo->FileId.Volume,
2994                                               pObjectInfo->FileId.Vnode,
2995                                               pObjectInfo->FileId.Unique);
2996
2997                                 SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
2998                             }
2999                         }
3000                     }
3001                     __except( EXCEPTION_EXECUTE_HANDLER)
3002                     {
3003                         ntStatus = GetExceptionCode();
3004
3005                         AFSDbgLogMsg( 0,
3006                                       0,
3007                                       "EXCEPTION - AFSVerifyEntry CcFlushCache or CcPurgeCacheSection %wZ FID %08lX-%08lX-%08lX-%08lX Status 0x%08lX\n",
3008                                       &DirEntry->NameInformation.FileName,
3009                                       pObjectInfo->FileId.Cell,
3010                                       pObjectInfo->FileId.Volume,
3011                                       pObjectInfo->FileId.Vnode,
3012                                       pObjectInfo->FileId.Unique,
3013                                       ntStatus);
3014
3015                         SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_PURGE_ON_CLOSE);
3016                     }
3017
3018                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->SectionObjectResource);
3019
3020                     if ( bPurgeExtents)
3021                     {
3022                         AFSFlushExtents( pObjectInfo->Fcb,
3023                                          AuthGroup);
3024                     }
3025
3026                     //
3027                     // Reacquire the Fcb to purge the cache
3028                     //
3029
3030                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3031                                   AFS_TRACE_LEVEL_VERBOSE,
3032                                   "AFSVerifyEntry Acquiring Fcb lock %p EXCL %08lX\n",
3033                                   &pObjectInfo->Fcb->NPFcb->Resource,
3034                                   PsGetCurrentThread());
3035
3036                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Resource,
3037                                     TRUE);
3038
3039                     //
3040                     // Update the metadata for the entry
3041                     //
3042
3043                     ntStatus = AFSUpdateMetaData( DirEntry,
3044                                                   pDirEnumEntry);
3045
3046                     if( !NT_SUCCESS( ntStatus))
3047                     {
3048
3049                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3050                                       AFS_TRACE_LEVEL_ERROR,
3051                                       "AFSVerifyEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX ntStatus %08lX\n",
3052                                       &DirEntry->NameInformation.FileName,
3053                                       pObjectInfo->FileId.Cell,
3054                                       pObjectInfo->FileId.Volume,
3055                                       pObjectInfo->FileId.Vnode,
3056                                       pObjectInfo->FileId.Unique,
3057                                       ntStatus);
3058
3059                         break;
3060                     }
3061
3062                     //
3063                     // Update file sizes
3064                     //
3065
3066                     pObjectInfo->Fcb->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
3067                     pObjectInfo->Fcb->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
3068                     pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
3069
3070                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3071                                   AFS_TRACE_LEVEL_VERBOSE,
3072                                   "AFSVerifyEntry Acquiring Fcb SectionObject lock %p EXCL %08lX\n",
3073                                   &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3074                                   PsGetCurrentThread());
3075
3076                     AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3077                                     TRUE);
3078
3079                     pCCFileObject = CcGetFileObjectFromSectionPtrs( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers);
3080
3081                     if ( pCCFileObject != NULL)
3082                     {
3083                         CcSetFileSizes( pCCFileObject,
3084                                         (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
3085                     }
3086
3087                     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3088                                   AFS_TRACE_LEVEL_VERBOSE,
3089                                   "AFSVerifyEntry Releasing Fcb SectionObject lock %p EXCL %08lX\n",
3090                                   &pObjectInfo->Fcb->NPFcb->SectionObjectResource,
3091                                   PsGetCurrentThread());
3092
3093                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->SectionObjectResource);
3094
3095                     AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Resource);
3096                 }
3097                 else
3098                 {
3099
3100                     //
3101                     // Update the metadata for the entry
3102                     //
3103
3104                     ntStatus = AFSUpdateMetaData( DirEntry,
3105                                                   pDirEnumEntry);
3106
3107                     if( !NT_SUCCESS( ntStatus))
3108                     {
3109
3110                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3111                                       AFS_TRACE_LEVEL_ERROR,
3112                                       "AFSVerifyEntry Meta Data Update failed %wZ FID %08lX-%08lX-%08lX-%08lX ntStatus %08lX\n",
3113                                       &DirEntry->NameInformation.FileName,
3114                                       pObjectInfo->FileId.Cell,
3115                                       pObjectInfo->FileId.Volume,
3116                                       pObjectInfo->FileId.Vnode,
3117                                       pObjectInfo->FileId.Unique,
3118                                       ntStatus);
3119
3120                         break;
3121                     }
3122
3123                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3124                                   AFS_TRACE_LEVEL_WARNING,
3125                                   "AFSVerifyEntry Fcb NULL %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3126                                   &DirEntry->NameInformation.FileName,
3127                                   pObjectInfo->FileId.Cell,
3128                                   pObjectInfo->FileId.Volume,
3129                                   pObjectInfo->FileId.Vnode,
3130                                   pObjectInfo->FileId.Unique);
3131                 }
3132
3133                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3134
3135                 break;
3136             }
3137
3138             case AFS_FILE_TYPE_DIRECTORY:
3139             {
3140
3141                 //
3142                 // For a directory or root entry flush the content of
3143                 // the directory enumeration.
3144                 //
3145
3146                 if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
3147                 {
3148
3149                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3150                                   AFS_TRACE_LEVEL_VERBOSE_2,
3151                                   "AFSVerifyEntry Validating directory content for entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3152                                   &DirEntry->NameInformation.FileName,
3153                                   pObjectInfo->FileId.Cell,
3154                                   pObjectInfo->FileId.Volume,
3155                                   pObjectInfo->FileId.Vnode,
3156                                   pObjectInfo->FileId.Unique);
3157
3158                     AFSAcquireExcl( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3159                                     TRUE);
3160
3161                     ntStatus = AFSValidateDirectoryCache( pObjectInfo,
3162                                                           AuthGroup);
3163
3164                     AFSReleaseResource( pObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
3165
3166                     if ( !NT_SUCCESS( ntStatus))
3167                     {
3168
3169                         try_return( ntStatus);
3170                     }
3171                 }
3172
3173                 //
3174                 // Update the metadata for the entry
3175                 //
3176
3177                 ntStatus = AFSUpdateMetaData( DirEntry,
3178                                               pDirEnumEntry);
3179
3180                 if( NT_SUCCESS( ntStatus))
3181                 {
3182
3183                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3184                 }
3185
3186                 break;
3187             }
3188
3189             case AFS_FILE_TYPE_DFSLINK:
3190             {
3191
3192                 UNICODE_STRING uniTargetName;
3193
3194                 //
3195                 // For a DFS link need to check the target name has not changed
3196                 //
3197
3198                 uniTargetName.Length = (USHORT)pDirEnumEntry->TargetNameLength;
3199
3200                 uniTargetName.MaximumLength = uniTargetName.Length;
3201
3202                 uniTargetName.Buffer = (WCHAR *)((char *)pDirEnumEntry + pDirEnumEntry->TargetNameOffset);
3203
3204                 AFSAcquireExcl( &DirEntry->NonPaged->Lock,
3205                                 TRUE);
3206
3207                 if( DirEntry->NameInformation.TargetName.Length == 0 ||
3208                     RtlCompareUnicodeString( &uniTargetName,
3209                                              &DirEntry->NameInformation.TargetName,
3210                                              TRUE) != 0)
3211                 {
3212
3213                     //
3214                     // Update the target name
3215                     //
3216
3217                     ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
3218                                                     &DirEntry->Flags,
3219                                                     uniTargetName.Buffer,
3220                                                     uniTargetName.Length);
3221
3222                     if( !NT_SUCCESS( ntStatus))
3223                     {
3224
3225                         AFSReleaseResource( &DirEntry->NonPaged->Lock);
3226
3227                         break;
3228                     }
3229                 }
3230
3231                 AFSReleaseResource( &DirEntry->NonPaged->Lock);
3232
3233                 //
3234                 // Update the metadata for the entry
3235                 //
3236
3237                 ntStatus = AFSUpdateMetaData( DirEntry,
3238                                               pDirEnumEntry);
3239
3240                 if( NT_SUCCESS( ntStatus))
3241                 {
3242
3243                     ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
3244                 }
3245
3246                 break;
3247             }
3248
3249             default:
3250
3251                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3252                               AFS_TRACE_LEVEL_WARNING,
3253                               "AFSVerifyEntry Attempt to verify node of type %d %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3254                               pObjectInfo->FileType,
3255                               &DirEntry->NameInformation.FileName,
3256                               pObjectInfo->FileId.Cell,
3257                               pObjectInfo->FileId.Volume,
3258                               pObjectInfo->FileId.Vnode,
3259                               pObjectInfo->FileId.Unique);
3260
3261                 break;
3262         }
3263
3264  try_exit:
3265
3266         if( pDirEnumEntry != NULL)
3267         {
3268
3269             AFSExFreePoolWithTag( pDirEnumEntry, AFS_GENERIC_MEMORY_2_TAG);
3270         }
3271     }
3272
3273     return ntStatus;
3274 }
3275
3276 NTSTATUS
3277 AFSSetVolumeState( IN AFSVolumeStatusCB *VolumeStatus)
3278 {
3279
3280     NTSTATUS ntStatus = STATUS_SUCCESS;
3281     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
3282     ULONGLONG   ullIndex = 0;
3283     AFSVolumeCB *pVolumeCB = NULL;
3284     LONG lCount;
3285
3286     __Enter
3287     {
3288
3289         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3290                       AFS_TRACE_LEVEL_VERBOSE,
3291                       "AFSSetVolumeState Marking volume state %d Volume Cell %08lX Volume %08lX\n",
3292                       VolumeStatus->Online,
3293                       VolumeStatus->FileID.Cell,
3294                       VolumeStatus->FileID.Volume);
3295
3296         //
3297         // Need to locate the Fcb for the directory to purge
3298         //
3299
3300         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3301                       AFS_TRACE_LEVEL_VERBOSE,
3302                       "AFSSetVolumeState Acquiring RDR VolumeTreeLock lock %p SHARED %08lX\n",
3303                       &pDevExt->Specific.RDR.VolumeTreeLock,
3304                       PsGetCurrentThread());
3305
3306         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock, TRUE);
3307
3308         //
3309         // Locate the volume node
3310         //
3311
3312         ullIndex = AFSCreateHighIndex( &VolumeStatus->FileID);
3313
3314         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
3315                                        ullIndex,
3316                                        (AFSBTreeEntry **)&pVolumeCB);
3317
3318         if( pVolumeCB != NULL)
3319         {
3320
3321             lCount = AFSVolumeIncrement( pVolumeCB,
3322                                          AFS_VOLUME_REFERENCE_INVALIDATE);
3323
3324             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
3325                           AFS_TRACE_LEVEL_VERBOSE,
3326                           "AFSSetVolumeState Increment count on volume %p Cnt %d\n",
3327                           pVolumeCB,
3328                           lCount);
3329
3330             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3331
3332             //
3333             // Set the volume state accordingly
3334             //
3335
3336             if( VolumeStatus->Online)
3337             {
3338
3339                 InterlockedAnd( (LONG *)&(pVolumeCB->Flags), ~AFS_VOLUME_FLAGS_OFFLINE);
3340             }
3341             else
3342             {
3343
3344                 InterlockedOr( (LONG *)&(pVolumeCB->Flags), AFS_VOLUME_FLAGS_OFFLINE);
3345             }
3346         }
3347     }
3348
3349     return ntStatus;
3350 }
3351
3352 NTSTATUS
3353 AFSSetNetworkState( IN AFSNetworkStatusCB *NetworkStatus)
3354 {
3355
3356     NTSTATUS ntStatus = STATUS_SUCCESS;
3357
3358     __Enter
3359     {
3360
3361         if( AFSGlobalRoot == NULL)
3362         {
3363
3364             try_return( ntStatus);
3365         }
3366
3367         AFSAcquireExcl( AFSGlobalRoot->VolumeLock,
3368                         TRUE);
3369
3370         //
3371         // Set the network state according to the information
3372         //
3373
3374         if( NetworkStatus->Online)
3375         {
3376
3377             ClearFlag( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE);
3378         }
3379         else
3380         {
3381
3382             SetFlag( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE);
3383         }
3384
3385         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3386
3387 try_exit:
3388
3389         NOTHING;
3390     }
3391
3392     return ntStatus;
3393 }
3394
3395 NTSTATUS
3396 AFSValidateDirectoryCache( IN AFSObjectInfoCB *ObjectInfo,
3397                            IN GUID *AuthGroup)
3398 {
3399
3400     NTSTATUS ntStatus = STATUS_SUCCESS;
3401     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
3402     BOOLEAN  bAcquiredLock = FALSE;
3403     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
3404
3405     __Enter
3406     {
3407
3408         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3409                       AFS_TRACE_LEVEL_VERBOSE,
3410                       "AFSValidateDirectoryCache Validating content for FID %08lX-%08lX-%08lX-%08lX\n",
3411                       ObjectInfo->FileId.Cell,
3412                       ObjectInfo->FileId.Volume,
3413                       ObjectInfo->FileId.Vnode,
3414                       ObjectInfo->FileId.Unique);
3415
3416         if( !ExIsResourceAcquiredLite( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock))
3417         {
3418
3419             AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3420                           AFS_TRACE_LEVEL_VERBOSE,
3421                           "AFSValidateDirectoryCache Acquiring DirectoryNodeHdr.TreeLock lock %p EXCL %08lX\n",
3422                           ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3423                           PsGetCurrentThread());
3424
3425             AFSAcquireExcl( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
3426                             TRUE);
3427
3428             bAcquiredLock = TRUE;
3429         }
3430
3431         //
3432         // Check for inconsistency between DirectoryNodeList and DirectoryNodeCount
3433         //
3434
3435         if ( ObjectInfo->Specific.Directory.DirectoryNodeListHead == NULL &&
3436              ObjectInfo->Specific.Directory.DirectoryNodeCount > 0)
3437         {
3438
3439             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3440                           AFS_TRACE_LEVEL_ERROR,
3441                           "AFSValidateDirectoryCache Empty Node List but Non-Zero Node Count %d for dir FID %08lX-%08lX-%08lX-%08lX\n",
3442                           ObjectInfo->Specific.Directory.DirectoryNodeCount,
3443                           ObjectInfo->FileId.Cell,
3444                           ObjectInfo->FileId.Volume,
3445                           ObjectInfo->FileId.Vnode,
3446                           ObjectInfo->FileId.Unique);
3447         }
3448
3449         //
3450         // Reset the directory list information by clearing all valid entries
3451         //
3452
3453         pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
3454
3455         while( pCurrentDirEntry != NULL)
3456         {
3457
3458             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
3459
3460             if( !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_FAKE))
3461             {
3462
3463                 //
3464                 // If this entry has been deleted then process it here
3465                 //
3466
3467                 if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED) &&
3468                     pCurrentDirEntry->DirOpenReferenceCount <= 0)
3469                 {
3470
3471                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3472                                   AFS_TRACE_LEVEL_VERBOSE,
3473                                   "AFSValidateDirectoryCache Deleting dir entry %p name %wZ\n",
3474                                   pCurrentDirEntry,
3475                                   &pCurrentDirEntry->NameInformation.FileName);
3476
3477                     AFSDeleteDirEntry( ObjectInfo,
3478                                        pCurrentDirEntry);
3479                 }
3480                 else
3481                 {
3482
3483                     ClearFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_VALID);
3484
3485                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3486                                   AFS_TRACE_LEVEL_VERBOSE,
3487                                   "AFSValidateDirectoryCache Clear VALID flag on DE %p Reference count %d\n",
3488                                   pCurrentDirEntry,
3489                                   pCurrentDirEntry->DirOpenReferenceCount);
3490
3491                     //
3492                     // We pull the short name from the parent tree since it could change below
3493                     //
3494
3495                     if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME))
3496                     {
3497
3498                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3499                                       AFS_TRACE_LEVEL_VERBOSE,
3500                                       "AFSValidateDirectoryCache Removing DE %p (%08lX) from shortname tree for %wZ\n",
3501                                       pCurrentDirEntry,
3502                                       pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex,
3503                                       &pCurrentDirEntry->NameInformation.FileName);
3504
3505                         AFSRemoveShortNameDirEntry( &ObjectInfo->Specific.Directory.ShortNameTree,
3506                                                     pCurrentDirEntry);
3507
3508                         ClearFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3509                     }
3510                 }
3511             }
3512
3513             pCurrentDirEntry = pNextDirEntry;
3514         }
3515
3516         //
3517         // Reget the directory contents
3518         //
3519
3520         ntStatus = AFSVerifyDirectoryContent( ObjectInfo,
3521                                               AuthGroup);
3522
3523         if ( !NT_SUCCESS( ntStatus))
3524         {
3525             try_return( ntStatus);
3526         }
3527
3528         //
3529         // Now start again and tear down any entries not valid
3530         //
3531
3532         pCurrentDirEntry = ObjectInfo->Specific.Directory.DirectoryNodeListHead;
3533
3534         while( pCurrentDirEntry != NULL)
3535         {
3536
3537             pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
3538
3539             if( BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_VALID))
3540             {
3541
3542                 if( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
3543                     !BooleanFlagOn( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME) &&
3544                     pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex > 0)
3545                 {
3546
3547                     if( ObjectInfo->Specific.Directory.ShortNameTree == NULL)
3548                     {
3549
3550                         ObjectInfo->Specific.Directory.ShortNameTree = pCurrentDirEntry;
3551
3552                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3553                                       AFS_TRACE_LEVEL_VERBOSE,
3554                                       "AFSValidateDirectoryCache Insert DE %p to head of shortname tree for %wZ\n",
3555                                       pCurrentDirEntry,
3556                                       &pCurrentDirEntry->NameInformation.FileName);
3557
3558                         SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3559                     }
3560                     else
3561                     {
3562
3563                         if( !NT_SUCCESS( AFSInsertShortNameDirEntry( ObjectInfo->Specific.Directory.ShortNameTree,
3564                                                                      pCurrentDirEntry)))
3565                         {
3566                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3567                                           AFS_TRACE_LEVEL_VERBOSE,
3568                                           "AFSValidateDirectoryCache Failed to insert DE %p (%08lX) to shortname tree for %wZ\n",
3569                                           pCurrentDirEntry,
3570                                           pCurrentDirEntry->Type.Data.ShortNameTreeEntry.HashIndex,
3571                                           &pCurrentDirEntry->NameInformation.FileName);
3572                         }
3573                         else
3574                         {
3575                             SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_INSERTED_SHORT_NAME);
3576
3577                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3578                                           AFS_TRACE_LEVEL_VERBOSE,
3579                                           "AFSValidateDirectoryCache Insert DE %p to shortname tree for %wZ\n",
3580                                           pCurrentDirEntry,
3581                                           &pCurrentDirEntry->NameInformation.FileName);
3582                         }
3583                     }
3584                 }
3585
3586                 pCurrentDirEntry = pNextDirEntry;
3587
3588                 continue;
3589             }
3590
3591             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3592                           AFS_TRACE_LEVEL_VERBOSE,
3593                           "AFSValidateDirectoryCache Processing INVALID DE %p Reference count %d\n",
3594                           pCurrentDirEntry,
3595                           pCurrentDirEntry->DirOpenReferenceCount);
3596
3597             if( pCurrentDirEntry->DirOpenReferenceCount <= 0)
3598             {
3599
3600                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3601                               AFS_TRACE_LEVEL_VERBOSE,
3602                               "AFSValidateDirectoryCache Deleting dir entry %wZ from parent FID %08lX-%08lX-%08lX-%08lX\n",
3603                               &pCurrentDirEntry->NameInformation.FileName,
3604                               ObjectInfo->FileId.Cell,
3605                               ObjectInfo->FileId.Volume,
3606                               ObjectInfo->FileId.Vnode,
3607                               ObjectInfo->FileId.Unique);
3608
3609                 AFSDeleteDirEntry( ObjectInfo,
3610                                    pCurrentDirEntry);
3611             }
3612             else
3613             {
3614
3615                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3616                               AFS_TRACE_LEVEL_VERBOSE,
3617                               "AFSValidateDirectoryCache Setting dir entry %p Name %wZ DELETED in parent FID %08lX-%08lX-%08lX-%08lX\n",
3618                               pCurrentDirEntry,
3619                               &pCurrentDirEntry->NameInformation.FileName,
3620                               ObjectInfo->FileId.Cell,
3621                               ObjectInfo->FileId.Volume,
3622                               ObjectInfo->FileId.Vnode,
3623                               ObjectInfo->FileId.Unique);
3624
3625                 SetFlag( pCurrentDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
3626
3627                 AFSRemoveNameEntry( ObjectInfo,
3628                                     pCurrentDirEntry);
3629             }
3630
3631             pCurrentDirEntry = pNextDirEntry;
3632         }
3633
3634 #if DBG
3635         if( !AFSValidateDirList( ObjectInfo))
3636         {
3637
3638             AFSPrint("AFSValidateDirectoryCache Invalid count ...\n");
3639         }
3640 #endif
3641
3642 try_exit:
3643
3644         if( bAcquiredLock)
3645         {
3646
3647             AFSReleaseResource( ObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
3648         }
3649     }
3650
3651     return ntStatus;
3652 }
3653
3654 BOOLEAN
3655 AFSIsVolumeFID( IN AFSFileID *FileID)
3656 {
3657
3658     BOOLEAN bIsVolume = FALSE;
3659
3660     if( FileID->Vnode == 1 &&
3661         FileID->Unique == 1)
3662     {
3663
3664         bIsVolume = TRUE;
3665     }
3666
3667     return bIsVolume;
3668 }
3669
3670 BOOLEAN
3671 AFSIsFinalNode( IN AFSFcb *Fcb)
3672 {
3673
3674     BOOLEAN bIsFinalNode = FALSE;
3675
3676     if( Fcb->Header.NodeTypeCode == AFS_ROOT_FCB ||
3677         Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB ||
3678         Fcb->Header.NodeTypeCode == AFS_FILE_FCB ||
3679         Fcb->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
3680         Fcb->Header.NodeTypeCode == AFS_INVALID_FCB )
3681     {
3682
3683         bIsFinalNode = TRUE;
3684     }
3685     else
3686     {
3687
3688         ASSERT( Fcb->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
3689                 Fcb->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB);
3690     }
3691
3692     return bIsFinalNode;
3693 }
3694
3695 NTSTATUS
3696 AFSUpdateMetaData( IN AFSDirectoryCB *DirEntry,
3697                    IN AFSDirEnumEntry *DirEnumEntry)
3698 {
3699
3700     NTSTATUS ntStatus = STATUS_SUCCESS;
3701     UNICODE_STRING uniTargetName;
3702     AFSObjectInfoCB *pObjectInfo = DirEntry->ObjectInformation;
3703
3704     __Enter
3705     {
3706
3707         pObjectInfo->TargetFileId = DirEnumEntry->TargetFileId;
3708
3709         pObjectInfo->Expiration = DirEnumEntry->Expiration;
3710
3711         pObjectInfo->DataVersion = DirEnumEntry->DataVersion;
3712
3713         pObjectInfo->FileType = DirEnumEntry->FileType;
3714
3715         pObjectInfo->CreationTime = DirEnumEntry->CreationTime;
3716
3717         pObjectInfo->LastAccessTime = DirEnumEntry->LastAccessTime;
3718
3719         pObjectInfo->LastWriteTime = DirEnumEntry->LastWriteTime;
3720
3721         pObjectInfo->ChangeTime = DirEnumEntry->ChangeTime;
3722
3723         pObjectInfo->EndOfFile = DirEnumEntry->EndOfFile;
3724
3725         pObjectInfo->AllocationSize = DirEnumEntry->AllocationSize;
3726
3727         pObjectInfo->FileAttributes = DirEnumEntry->FileAttributes;
3728
3729         if( pObjectInfo->FileType == AFS_FILE_TYPE_MOUNTPOINT)
3730         {
3731
3732             pObjectInfo->FileAttributes = (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT);
3733         }
3734
3735         if( pObjectInfo->FileType == AFS_FILE_TYPE_SYMLINK ||
3736             pObjectInfo->FileType == AFS_FILE_TYPE_DFSLINK)
3737         {
3738
3739             pObjectInfo->FileAttributes = FILE_ATTRIBUTE_REPARSE_POINT;
3740         }
3741
3742         pObjectInfo->EaSize = DirEnumEntry->EaSize;
3743
3744         pObjectInfo->Links = DirEnumEntry->Links;
3745
3746         if( DirEnumEntry->TargetNameLength > 0 &&
3747             ( DirEntry->NameInformation.TargetName.Length != DirEnumEntry->TargetNameLength ||