src/WINNT/afsrdr/kernel/lib/AFSNameSupport.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: AFSNameSupport.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 NTSTATUS
  42 AFSLocateNameEntry( IN GUID *AuthGroup,
  43                     IN PFILE_OBJECT FileObject,
  44                     IN UNICODE_STRING *RootPathName,
  45                     IN UNICODE_STRING *ParsedPathName,
  46                     IN AFSNameArrayHdr *NameArray,
  47                     IN ULONG Flags,
  48                     OUT AFSVolumeCB **VolumeCB,
  49                     IN OUT AFSDirectoryCB **ParentDirectoryCB,
  50                     OUT AFSDirectoryCB **DirectoryCB,
  51                     OUT PUNICODE_STRING ComponentName)
  52 {
  53
  54     NTSTATUS          ntStatus = STATUS_SUCCESS;
  55     UNICODE_STRING    uniPathName, uniComponentName, uniRemainingPath, uniSearchName, uniFullPathName;
  56     ULONG             ulCRC = 0;
  57     AFSDirectoryCB   *pDirEntry = NULL, *pParentDirEntry = NULL;
  58     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
  59     UNICODE_STRING    uniSysName;
  60     ULONG             ulSubstituteIndex = 0;
  61     BOOLEAN           bSubstituteName = FALSE;
  62     AFSNameArrayHdr  *pNameArray = NameArray;
  63     BOOLEAN           bAllocatedSymLinkBuffer = FALSE;
  64     UNICODE_STRING    uniRelativeName, uniNoOpName;
  65     AFSObjectInfoCB  *pCurrentObject = NULL;
  66     AFSVolumeCB      *pCurrentVolume = *VolumeCB;
  67     BOOLEAN           bReleaseCurrentVolume = TRUE;
  68     BOOLEAN           bSubstitutedName = FALSE;
  69
  70     __Enter
  71     {
  72
  73         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
  74                       AFS_TRACE_LEVEL_VERBOSE_2,
  75                       "AFSLocateNameEntry (FO: %08lX) Processing full name %wZ\n",
  76                       FileObject,
  77                       RootPathName);
  78
  79         RtlInitUnicodeString( &uniSysName,
  80                               L"*@SYS");
  81
  82         RtlInitUnicodeString( &uniRelativeName,
  83                               L"..");
  84
  85         RtlInitUnicodeString( &uniNoOpName,
  86                               L".");
  87
  88         //
  89         // Cleanup some parameters
  90         //
  91
  92         if( ComponentName != NULL)
  93         {
  94
  95             ComponentName->Length = 0;
  96             ComponentName->MaximumLength = 0;
  97             ComponentName->Buffer = NULL;
  98         }
  99
 100         //
 101         // We will parse through the filename, locating the directory nodes until we encounter a cache miss
 102         // Starting at the root node
 103         //
 104
 105         pParentDirEntry = NULL;
 106
 107         pDirEntry = *ParentDirectoryCB;
 108
 109         uniPathName = *ParsedPathName;
 110
 111         uniFullPathName = *RootPathName;
 112
 113         uniComponentName.Length = uniComponentName.MaximumLength = 0;
 114         uniComponentName.Buffer = NULL;
 115
 116         uniRemainingPath.Length = uniRemainingPath.MaximumLength = 0;
 117         uniRemainingPath.Buffer = NULL;
 118
 119         uniSearchName.Length = uniSearchName.MaximumLength = 0;
 120         uniSearchName.Buffer = NULL;
 121
 122         ASSERT( pCurrentVolume->VolumeReferenceCount > 1);
 123
 124         while( TRUE)
 125         {
 126
 127             //
 128             // Check our total link count for this name array
 129             //
 130
 131             if( pNameArray->LinkCount >= (LONG)pDevExt->Specific.RDR.MaxLinkCount)
 132             {
 133
 134                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 135             }
 136
 137             pCurrentObject = pDirEntry->ObjectInformation;
 138
 139             KeQueryTickCount( &pCurrentObject->LastAccessCount);
 140
 141             //
 142             // Check that the directory entry is not deleted or pending delete
 143             //
 144
 145             if( BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED))
 146             {
 147
 148                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 149                               AFS_TRACE_LEVEL_ERROR,
 150                               "AFSLocateNameEntry (FO: %08lX) Deleted parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 151                               FileObject,
 152                               &pDirEntry->NameInformation.FileName,
 153                               pCurrentObject->FileId.Cell,
 154                               pCurrentObject->FileId.Volume,
 155                               pCurrentObject->FileId.Vnode,
 156                               pCurrentObject->FileId.Unique,
 157                               ntStatus);
 158
 159                 try_return( ntStatus = STATUS_FILE_DELETED);
 160             }
 161
 162             if( BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_PENDING_DELETE))
 163             {
 164
 165                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 166                               AFS_TRACE_LEVEL_ERROR,
 167                               "AFSLocateNameEntry (FO: %08lX) Delete pending on %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 168                               FileObject,
 169                               &pDirEntry->NameInformation.FileName,
 170                               pCurrentObject->FileId.Cell,
 171                               pCurrentObject->FileId.Volume,
 172                               pCurrentObject->FileId.Vnode,
 173                               pCurrentObject->FileId.Unique,
 174                               ntStatus);
 175
 176                 try_return( ntStatus = STATUS_DELETE_PENDING);
 177             }
 178
 179             //
 180             // Check if the directory requires verification
 181             //
 182
 183             if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_VERIFY) &&
 184                 ( pCurrentObject->FileType != AFS_FILE_TYPE_DIRECTORY ||
 185                   !AFSIsEnumerationInProcess( pCurrentObject)))
 186             {
 187
 188                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 189                               AFS_TRACE_LEVEL_VERBOSE,
 190                               "AFSLocateNameEntry (FO: %08lX) Verifying parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 191                               FileObject,
 192                               &pDirEntry->NameInformation.FileName,
 193                               pCurrentObject->FileId.Cell,
 194                               pCurrentObject->FileId.Volume,
 195                               pCurrentObject->FileId.Vnode,
 196                               pCurrentObject->FileId.Unique);
 197
 198                 ntStatus = AFSVerifyEntry( AuthGroup,
 199                                            pDirEntry);
 200
 201                 if( !NT_SUCCESS( ntStatus))
 202                 {
 203
 204                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 205                                   AFS_TRACE_LEVEL_ERROR,
 206                                   "AFSLocateNameEntry (FO: %08lX) Failed to verify parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 207                                   FileObject,
 208                                   &pDirEntry->NameInformation.FileName,
 209                                   pCurrentObject->FileId.Cell,
 210                                   pCurrentObject->FileId.Volume,
 211                                   pCurrentObject->FileId.Vnode,
 212                                   pCurrentObject->FileId.Unique,
 213                                   ntStatus);
 214
 215                     try_return( ntStatus);
 216                 }
 217             }
 218
 219             //
 220             // Ensure the parent node has been evaluated, if not then go do it now
 221             //
 222
 223             if( BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED) ||
 224                 pCurrentObject->FileType == AFS_FILE_TYPE_UNKNOWN)
 225             {
 226
 227                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 228                               AFS_TRACE_LEVEL_VERBOSE,
 229                               "AFSLocateNameEntry (FO: %08lX) Evaluating parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 230                               FileObject,
 231                               &pDirEntry->NameInformation.FileName,
 232                               pCurrentObject->FileId.Cell,
 233                               pCurrentObject->FileId.Volume,
 234                               pCurrentObject->FileId.Vnode,
 235                               pCurrentObject->FileId.Unique);
 236
 237                 ntStatus = AFSEvaluateNode( AuthGroup,
 238                                             pDirEntry);
 239
 240                 if( !NT_SUCCESS( ntStatus))
 241                 {
 242
 243                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 244                                   AFS_TRACE_LEVEL_ERROR,
 245                                   "AFSLocateNameEntry (FO: %08lX) Failed to evaluate parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 246                                   FileObject,
 247                                   &pDirEntry->NameInformation.FileName,
 248                                   pCurrentObject->FileId.Cell,
 249                                   pCurrentObject->FileId.Volume,
 250                                   pCurrentObject->FileId.Vnode,
 251                                   pCurrentObject->FileId.Unique,
 252                                   ntStatus);
 253
 254                     try_return( ntStatus);
 255                 }
 256
 257                 ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED);
 258             }
 259
 260             //
 261             // If this is a mount point or symlink then go get the real directory node
 262             //
 263
 264             switch( pCurrentObject->FileType)
 265             {
 266
 267                 case AFS_FILE_TYPE_SYMLINK:
 268                 {
 269
 270                     UNICODE_STRING uniTempName;
 271                     WCHAR *pTmpBuffer = NULL;
 272                     LONG lLinkCount = 0;
 273
 274                     //
 275                     // Check if the flag is set to NOT evaluate a symlink
 276                     // and we are done with the parsing
 277                     //
 278
 279                     if( BooleanFlagOn( Flags, AFS_LOCATE_FLAGS_NO_SL_TARGET_EVAL) &&
 280                         uniRemainingPath.Length == 0)
 281                     {
 282
 283                         //
 284                         // Pass back the directory entries
 285                         //
 286
 287                         *ParentDirectoryCB = pParentDirEntry;
 288
 289                         *DirectoryCB = pDirEntry;
 290
 291                         *VolumeCB = pCurrentVolume;
 292
 293                         *RootPathName = uniFullPathName;
 294
 295                         try_return( ntStatus);
 296                     }
 297
 298                     AFSAcquireExcl( &pDirEntry->NonPaged->Lock,
 299                                     TRUE);
 300
 301                     if( pDirEntry->NameInformation.TargetName.Length == 0)
 302                     {
 303
 304                         //
 305                         // We'll reset the DV to ensure we validate the metadata content
 306                         //
 307
 308                         pCurrentObject->DataVersion.QuadPart = (ULONGLONG)-1;
 309
 310                         SetFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_VERIFY);
 311
 312                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 313                                       AFS_TRACE_LEVEL_VERBOSE,
 314                                       "AFSLocateNameEntry (FO: %08lX) Verifying symlink parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 315                                       FileObject,
 316                                       &pDirEntry->NameInformation.FileName,
 317                                       pCurrentObject->FileId.Cell,
 318                                       pCurrentObject->FileId.Volume,
 319                                       pCurrentObject->FileId.Vnode,
 320                                       pCurrentObject->FileId.Unique);
 321
 322                         ntStatus = AFSVerifyEntry( AuthGroup,
 323                                                    pDirEntry);
 324
 325                         if( !NT_SUCCESS( ntStatus))
 326                         {
 327
 328                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 329                                           AFS_TRACE_LEVEL_ERROR,
 330                                           "AFSLocateNameEntry (FO: %08lX) Failed to verify symlink parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 331                                           FileObject,
 332                                           &pDirEntry->NameInformation.FileName,
 333                                           pCurrentObject->FileId.Cell,
 334                                           pCurrentObject->FileId.Volume,
 335                                           pCurrentObject->FileId.Vnode,
 336                                           pCurrentObject->FileId.Unique,
 337                                           ntStatus);
 338
 339                             AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 340
 341                             try_return( ntStatus);
 342                         }
 343
 344                         //
 345                         // If the type changed then reprocess this entry
 346                         //
 347
 348                         if( pCurrentObject->FileType != AFS_FILE_TYPE_SYMLINK)
 349                         {
 350
 351                             AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 352
 353                             continue;
 354                         }
 355                     }
 356
 357                     //
 358                     // If we were given a zero length target name then deny access to the entry
 359                     //
 360
 361                     if( pDirEntry->NameInformation.TargetName.Length == 0)
 362                     {
 363
 364                         ntStatus = STATUS_ACCESS_DENIED;
 365
 366                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 367                                       AFS_TRACE_LEVEL_ERROR,
 368                                       "AFSLocateNameEntry (FO: %08lX) Failed to retrieve target name for symlink %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 369                                       FileObject,
 370                                       &pDirEntry->NameInformation.FileName,
 371                                       pCurrentObject->FileId.Cell,
 372                                       pCurrentObject->FileId.Volume,
 373                                       pCurrentObject->FileId.Vnode,
 374                                       pCurrentObject->FileId.Unique,
 375                                       ntStatus);
 376
 377                         AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 378
 379                         try_return( ntStatus);
 380                     }
 381
 382                     if( AFSIsRelativeName( &pDirEntry->NameInformation.TargetName))
 383                     {
 384
 385                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 386                                       AFS_TRACE_LEVEL_VERBOSE,
 387                                       "AFSLocateNameEntry (FO: %08lX) Processing relative symlink target %wZ for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 388                                       FileObject,
 389                                       &pDirEntry->NameInformation.TargetName,
 390                                       &pDirEntry->NameInformation.FileName,
 391                                       pCurrentObject->FileId.Cell,
 392                                       pCurrentObject->FileId.Volume,
 393                                       pCurrentObject->FileId.Vnode,
 394                                       pCurrentObject->FileId.Unique);
 395
 396                         //
 397                         // We'll substitute this name into the current process name
 398                         // starting at where we sit in the path
 399                         //
 400
 401                         uniTempName.Length = 0;
 402                         uniTempName.MaximumLength = (USHORT)((char *)uniComponentName.Buffer - (char *)uniFullPathName.Buffer) +
 403                                                                     pDirEntry->NameInformation.TargetName.Length +
 404                                                                     sizeof( WCHAR) +
 405                                                                     uniRemainingPath.Length;
 406
 407                         uniTempName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
 408                                                                                 uniTempName.MaximumLength,
 409                                                                                 AFS_NAME_BUFFER_ONE_TAG);
 410
 411                         if( uniTempName.Buffer == NULL)
 412                         {
 413
 414                             AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 415
 416                             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 417                         }
 418
 419                         //
 420                         // We have so first copy in the portion up to the component
 421                         // name
 422                         //
 423
 424                         RtlCopyMemory( uniTempName.Buffer,
 425                                        uniFullPathName.Buffer,
 426                                        (ULONG)((char *)uniComponentName.Buffer - (char *)uniFullPathName.Buffer));
 427
 428                         uniTempName.Length = (USHORT)((char *)uniComponentName.Buffer - (char *)uniFullPathName.Buffer);
 429
 430                         if( bAllocatedSymLinkBuffer ||
 431                             bSubstitutedName)
 432                         {
 433
 434                             pTmpBuffer = uniFullPathName.Buffer;
 435                         }
 436
 437                         bAllocatedSymLinkBuffer = TRUE;
 438
 439                         //
 440                         // Have we parsed this name yet? Better have at least once ...
 441                         //
 442
 443                         if( uniComponentName.Length == 0)
 444                         {
 445                             ASSERT( FALSE);
 446                         }
 447
 448                         //
 449                         // Copy in the target name ...
 450                         //
 451
 452                         RtlCopyMemory( &uniTempName.Buffer[ uniTempName.Length/sizeof( WCHAR)],
 453                                        pDirEntry->NameInformation.TargetName.Buffer,
 454                                        pDirEntry->NameInformation.TargetName.Length);
 455
 456                         uniPathName.Buffer = &uniTempName.Buffer[ uniTempName.Length/sizeof( WCHAR)];
 457
 458                         uniPathName.Length += pDirEntry->NameInformation.TargetName.Length;
 459                         uniPathName.MaximumLength = uniTempName.MaximumLength;
 460
 461                         uniTempName.Length += pDirEntry->NameInformation.TargetName.Length;
 462
 463                         //
 464                         // And now any remaining portion of the name
 465                         //
 466
 467                         if( uniRemainingPath.Length > 0)
 468                         {
 469
 470                             if( uniRemainingPath.Buffer[ 0] != L'\\')
 471                             {
 472
 473                                 uniRemainingPath.Buffer--;
 474                                 uniRemainingPath.Length += sizeof( WCHAR);
 475
 476                                 uniPathName.Length += sizeof( WCHAR);
 477                             }
 478
 479                             RtlCopyMemory( &uniTempName.Buffer[ uniTempName.Length/sizeof( WCHAR)],
 480                                            uniRemainingPath.Buffer,
 481                                            uniRemainingPath.Length);
 482
 483                             uniTempName.Length += uniRemainingPath.Length;
 484                         }
 485
 486                         uniFullPathName = uniTempName;
 487
 488                         if( pTmpBuffer != NULL)
 489                         {
 490
 491                             AFSExFreePool( pTmpBuffer);
 492                         }
 493
 494                         AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 495
 496                         //
 497                         // Dereference the current entry ..
 498                         //
 499
 500                         InterlockedDecrement( &pDirEntry->OpenReferenceCount);
 501
 502                         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 503                                       AFS_TRACE_LEVEL_VERBOSE,
 504                                       "AFSLocateNameEntry Decrement1 count on %wZ DE %p Ccb %p Cnt %d\n",
 505                                       &pDirEntry->NameInformation.FileName,
 506                                       pDirEntry,
 507                                       NULL,
 508                                       pDirEntry->OpenReferenceCount);
 509
 510                         //
 511                         // OK, need to back up one entry for the correct parent since the current
 512                         // entry we are on is the symlink itself
 513                         //
 514
 515                         pDirEntry = AFSBackupEntry( pNameArray);
 516
 517                         //
 518                         // Increment our reference on this dir entry
 519                         //
 520
 521                         InterlockedIncrement( &pDirEntry->OpenReferenceCount);
 522
 523                         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 524                                       AFS_TRACE_LEVEL_VERBOSE,
 525                                       "AFSLocateNameEntry Increment1 count on %wZ DE %p Ccb %p Cnt %d\n",
 526                                       &pDirEntry->NameInformation.FileName,
 527                                       pDirEntry,
 528                                       NULL,
 529                                       pDirEntry->OpenReferenceCount);
 530
 531                         if( BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_ROOT_VOLUME))
 532                         {
 533
 534                             pParentDirEntry = NULL;
 535                         }
 536                         else
 537                         {
 538
 539                             pParentDirEntry = AFSGetParentEntry( pNameArray);
 540
 541                             ASSERT( pParentDirEntry != pDirEntry);
 542                         }
 543                     }
 544                     else
 545                     {
 546
 547                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 548                                       AFS_TRACE_LEVEL_VERBOSE,
 549                                       "AFSLocateNameEntry (FO: %08lX) Processing absolute symlink target %wZ for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 550                                       FileObject,
 551                                       &pDirEntry->NameInformation.TargetName,
 552                                       &pDirEntry->NameInformation.FileName,
 553                                       pCurrentObject->FileId.Cell,
 554                                       pCurrentObject->FileId.Volume,
 555                                       pCurrentObject->FileId.Vnode,
 556                                       pCurrentObject->FileId.Unique);
 557
 558                         //
 559                         // We'll substitute this name into the current process name
 560                         // starting at where we sit in the path
 561                         //
 562
 563                         uniTempName.Length = 0;
 564                         uniTempName.MaximumLength = pDirEntry->NameInformation.TargetName.Length +
 565                                                                     sizeof( WCHAR) +
 566                                                                     uniRemainingPath.Length;
 567
 568                         uniTempName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
 569                                                                                 uniTempName.MaximumLength,
 570                                                                                 AFS_NAME_BUFFER_TWO_TAG);
 571
 572                         if( uniTempName.Buffer == NULL)
 573                         {
 574
 575                             AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 576
 577                             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
 578                         }
 579
 580                         if( bAllocatedSymLinkBuffer ||
 581                             bSubstitutedName)
 582                         {
 583
 584                             pTmpBuffer = uniFullPathName.Buffer;
 585                         }
 586
 587                         bAllocatedSymLinkBuffer = TRUE;
 588
 589                         //
 590                         // Have we parsed this name yet? Better have at least once ...
 591                         //
 592
 593                         if( uniComponentName.Length == 0)
 594                         {
 595                             ASSERT( FALSE);
 596                         }
 597
 598                         //
 599                         // Copy in the target name ...
 600                         //
 601
 602                         RtlCopyMemory( uniTempName.Buffer,
 603                                        pDirEntry->NameInformation.TargetName.Buffer,
 604                                        pDirEntry->NameInformation.TargetName.Length);
 605
 606                         uniTempName.Length = pDirEntry->NameInformation.TargetName.Length;
 607
 608                         //
 609                         // And now any remaining portion of the name
 610                         //
 611
 612                         if( uniRemainingPath.Length > 0)
 613                         {
 614
 615                             if( uniRemainingPath.Buffer[ 0] != L'\\')
 616                             {
 617
 618                                 uniRemainingPath.Buffer--;
 619                                 uniRemainingPath.Length += sizeof( WCHAR);
 620                             }
 621
 622                             RtlCopyMemory( &uniTempName.Buffer[ uniTempName.Length/sizeof( WCHAR)],
 623                                            uniRemainingPath.Buffer,
 624                                            uniRemainingPath.Length);
 625
 626                             uniTempName.Length += uniRemainingPath.Length;
 627                         }
 628
 629                         uniFullPathName = uniTempName;
 630
 631                         uniPathName = uniTempName;
 632
 633                         if( pTmpBuffer != NULL)
 634                         {
 635
 636                             AFSExFreePool( pTmpBuffer);
 637                         }
 638
 639                         AFSReleaseResource( &pDirEntry->NonPaged->Lock);
 640
 641                         //
 642                         // If our current volume is not the global root then make it so ...
 643                         //
 644
 645                         if( pCurrentVolume != AFSGlobalRoot)
 646                         {
 647
 648                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 649                                           AFS_TRACE_LEVEL_VERBOSE,
 650                                           "AFSLocateNameEntry (FO: %08lX) Current volume not global, resetting for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 651                                           FileObject,
 652                                           &pDirEntry->NameInformation.FileName,
 653                                           pCurrentObject->FileId.Cell,
 654                                           pCurrentObject->FileId.Volume,
 655                                           pCurrentObject->FileId.Vnode,
 656                                           pCurrentObject->FileId.Unique);
 657
 658                             InterlockedDecrement( &pCurrentVolume->VolumeReferenceCount);
 659
 660                             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
 661                                           AFS_TRACE_LEVEL_VERBOSE,
 662                                           "AFSLocateNameEntry Decrement count on volume %08lX Cnt %d\n",
 663                                           pCurrentVolume,
 664                                           pCurrentVolume->VolumeReferenceCount);
 665
 666                             AFSReleaseResource( pCurrentVolume->VolumeLock);
 667
 668                             pCurrentVolume = AFSGlobalRoot;
 669
 670                             AFSAcquireShared( pCurrentVolume->VolumeLock,
 671                                               TRUE);
 672
 673                             InterlockedIncrement( &pCurrentVolume->VolumeReferenceCount);
 674
 675                             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
 676                                           AFS_TRACE_LEVEL_VERBOSE,
 677                                           "AFSLocateNameEntry Increment count on volume %08lX Cnt %d\n",
 678                                           pCurrentVolume,
 679                                           pCurrentVolume->VolumeReferenceCount);
 680                         }
 681
 682                         //
 683                         // Dereference our current dir entry
 684                         //
 685
 686                         InterlockedDecrement( &pDirEntry->OpenReferenceCount);
 687
 688                         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 689                                       AFS_TRACE_LEVEL_VERBOSE,
 690                                       "AFSLocateNameEntry Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
 691                                       &pDirEntry->NameInformation.FileName,
 692                                       pDirEntry,
 693                                       NULL,
 694                                       pDirEntry->OpenReferenceCount);
 695
 696                         pDirEntry = pCurrentVolume->DirectoryCB;
 697
 698                         //
 699                         // Reference the new dir entry
 700                         //
 701
 702                         InterlockedIncrement( &pDirEntry->OpenReferenceCount);
 703
 704                         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 705                                       AFS_TRACE_LEVEL_VERBOSE,
 706                                       "AFSLocateNameEntry Increment2 count on %wZ DE %p Ccb %p Cnt %d\n",
 707                                       &pDirEntry->NameInformation.FileName,
 708                                       pDirEntry,
 709                                       NULL,
 710                                       pDirEntry->OpenReferenceCount);
 711
 712                         //
 713                         // Reset the name array
 714                         // Persist the link count in the name array
 715                         //
 716
 717                         lLinkCount = pNameArray->LinkCount;
 718
 719                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 720                                       AFS_TRACE_LEVEL_VERBOSE,
 721                                       "AFSLocateNameEntry (FO: %08lX) Resetting name array for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 722                                       FileObject,
 723                                       &pDirEntry->NameInformation.FileName,
 724                                       pCurrentObject->FileId.Cell,
 725                                       pCurrentObject->FileId.Volume,
 726                                       pCurrentObject->FileId.Vnode,
 727                                       pCurrentObject->FileId.Unique);
 728
 729                         AFSResetNameArray( pNameArray,
 730                                            pDirEntry);
 731
 732                         pNameArray->LinkCount = lLinkCount;
 733
 734                         //
 735                         // Process over the \\<Global root> portion of the name
 736                         //
 737
 738                         FsRtlDissectName( uniPathName,
 739                                           &uniComponentName,
 740                                           &uniRemainingPath);
 741
 742                         if( RtlCompareUnicodeString( &uniComponentName,
 743                                                      &AFSServerName,
 744                                                      TRUE) != 0)
 745                         {
 746
 747                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 748                                           AFS_TRACE_LEVEL_ERROR,
 749                                           "AFSLocateNameEntry Name %wZ contains invalid server name\n",
 750                                           &uniPathName);
 751
 752                             //
 753                             // The correct response would be STATUS_OBJECT_PATH_INVALID
 754                             // but that prevents cmd.exe from performing a recursive
 755                             // directory enumeration when opening a directory entry
 756                             // that represents a symlink to an invalid path is discovered.
 757                             //
 758                             try_return( ntStatus = STATUS_OBJECT_PATH_NOT_FOUND);
 759                         }
 760
 761                         uniPathName = uniRemainingPath;
 762
 763                         pParentDirEntry = NULL;
 764                     }
 765
 766                     //
 767                     // Increment our link count
 768                     //
 769
 770                     InterlockedIncrement( &pNameArray->LinkCount);
 771
 772                     continue;
 773                 }
 774
 775                 case AFS_FILE_TYPE_MOUNTPOINT:
 776                 {
 777
 778                     //
 779                     // Check if the flag is set to NOT evaluate a mount point
 780                     // and we are done with the parsing
 781                     //
 782
 783                     if( BooleanFlagOn( Flags, AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL) &&
 784                         uniRemainingPath.Length == 0)
 785                     {
 786
 787                         //
 788                         // Pass back the directory entries
 789                         //
 790
 791                         *ParentDirectoryCB = pParentDirEntry;
 792
 793                         *DirectoryCB = pDirEntry;
 794
 795                         *VolumeCB = pCurrentVolume;
 796
 797                         *RootPathName = uniFullPathName;
 798
 799                         try_return( ntStatus);
 800                     }
 801
 802                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 803                                   AFS_TRACE_LEVEL_VERBOSE,
 804                                   "AFSLocateNameEntry (FO: %08lX) Building MP target for parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 805                                   FileObject,
 806                                   &pDirEntry->NameInformation.FileName,
 807                                   pCurrentObject->FileId.Cell,
 808                                   pCurrentObject->FileId.Volume,
 809                                   pCurrentObject->FileId.Vnode,
 810                                   pCurrentObject->FileId.Unique);
 811
 812                     //
 813                     // Go retrieve the target entry for this node
 814                     // Release the current volume cb entry since we would
 815                     // have lock inversion in the following call
 816                     // Also decrement the ref count on the volume
 817                     //
 818
 819                     ASSERT( pCurrentVolume->VolumeReferenceCount > 1);
 820
 821                     InterlockedDecrement( &pCurrentVolume->VolumeReferenceCount);
 822
 823                     AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
 824                                   AFS_TRACE_LEVEL_VERBOSE,
 825                                   "AFSLocateNameEntry Decrement2 count on volume %08lX Cnt %d\n",
 826                                   pCurrentVolume,
 827                                   pCurrentVolume->VolumeReferenceCount);
 828
 829                     AFSReleaseResource( pCurrentVolume->VolumeLock);
 830
 831                     ntStatus = AFSBuildMountPointTarget( AuthGroup,
 832                                                          pDirEntry,
 833                                                          &pCurrentVolume);
 834
 835                     if( !NT_SUCCESS( ntStatus))
 836                     {
 837
 838                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 839                                       AFS_TRACE_LEVEL_ERROR,
 840                                       "AFSLocateNameEntry (FO: %08lX) Failed to build MP target for parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 841                                       FileObject,
 842                                       &pDirEntry->NameInformation.FileName,
 843                                       pCurrentObject->FileId.Cell,
 844                                       pCurrentObject->FileId.Volume,
 845                                       pCurrentObject->FileId.Vnode,
 846                                       pCurrentObject->FileId.Unique,
 847                                       ntStatus);
 848
 849                         //
 850                         // We already decremented the current volume above
 851                         //
 852
 853                         bReleaseCurrentVolume = FALSE;
 854
 855                         try_return( ntStatus = STATUS_ACCESS_DENIED);
 856                     }
 857
 858                     ASSERT( pCurrentVolume->VolumeReferenceCount > 1);
 859
 860                     ASSERT( ExIsResourceAcquiredLite( pCurrentVolume->VolumeLock));
 861
 862                     //
 863                     // Replace the current name for the mp with the volume root of the target
 864                     //
 865
 866                     AFSReplaceCurrentElement( pNameArray,
 867                                               pCurrentVolume->DirectoryCB);
 868
 869                     //
 870                     // We want to restart processing here on the new parent ...
 871                     // Deref and ref count the entries
 872                     //
 873
 874                     InterlockedDecrement( &pDirEntry->OpenReferenceCount);
 875
 876                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 877                                   AFS_TRACE_LEVEL_VERBOSE,
 878                                   "AFSLocateNameEntry Decrement3 count on %wZ DE %p Ccb %p Cnt %d\n",
 879                                   &pDirEntry->NameInformation.FileName,
 880                                   pDirEntry,
 881                                   NULL,
 882                                   pDirEntry->OpenReferenceCount);
 883
 884                     pDirEntry = pCurrentVolume->DirectoryCB;
 885
 886                     InterlockedIncrement( &pDirEntry->OpenReferenceCount);
 887
 888                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 889                                   AFS_TRACE_LEVEL_VERBOSE,
 890                                   "AFSLocateNameEntry Increment3 count on %wZ DE %p Ccb %p Cnt %d\n",
 891                                   &pDirEntry->NameInformation.FileName,
 892                                   pDirEntry,
 893                                   NULL,
 894                                   pDirEntry->OpenReferenceCount);
 895
 896                     pParentDirEntry = NULL;
 897
 898                     //
 899                     // Increment our link count
 900                     //
 901
 902                     InterlockedIncrement( &pNameArray->LinkCount);
 903
 904                     continue;
 905                 }
 906
 907                 case AFS_FILE_TYPE_DFSLINK:
 908                 {
 909
 910                     if( BooleanFlagOn( Flags, AFS_LOCATE_FLAGS_NO_DFS_LINK_EVAL))
 911                     {
 912
 913                         //
 914                         // Pass back the directory entries
 915                         //
 916
 917                         *ParentDirectoryCB = pParentDirEntry;
 918
 919                         *DirectoryCB = pDirEntry;
 920
 921                         *VolumeCB = pCurrentVolume;
 922
 923                         *RootPathName = uniFullPathName;
 924
 925                         try_return( ntStatus);
 926                     }
 927
 928                     //
 929                     // This is a DFS link so we need to update the file name and return STATUS_REPARSE to the
 930                     // system for it to reevaluate it
 931                     //
 932
 933                     if( FileObject != NULL)
 934                     {
 935
 936                         ntStatus = AFSProcessDFSLink( pDirEntry,
 937                                                       FileObject,
 938                                                       &uniRemainingPath);
 939                     }
 940                     else
 941                     {
 942
 943                         //
 944                         // This is where we have been re-entered from an NP evaluation call via the BuildBranch()
 945                         // routine.
 946                         //
 947
 948                         ntStatus = STATUS_INVALID_PARAMETER;
 949                     }
 950
 951                     if( ntStatus != STATUS_SUCCESS &&
 952                         ntStatus != STATUS_REPARSE)
 953                     {
 954
 955                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 956                                       AFS_TRACE_LEVEL_ERROR,
 957                                       "AFSLocateNameEntry (FO: %08lX) Failed to process DFSLink parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 958                                       FileObject,
 959                                       &pDirEntry->NameInformation.FileName,
 960                                       pCurrentObject->FileId.Cell,
 961                                       pCurrentObject->FileId.Volume,
 962                                       pCurrentObject->FileId.Vnode,
 963                                       pCurrentObject->FileId.Unique,
 964                                       ntStatus);
 965                     }
 966
 967                     try_return( ntStatus);
 968                 }
 969
 970                 case AFS_FILE_TYPE_UNKNOWN:
 971                 case AFS_FILE_TYPE_INVALID:
 972                 {
 973
 974                     //
 975                     // Something was not processed ...
 976                     //
 977
 978                     try_return( ntStatus = STATUS_ACCESS_DENIED);
 979                 }
 980
 981             }   /* end of switch */
 982
 983             //
 984             // If the parent is not initialized then do it now
 985             //
 986
 987             if( pCurrentObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
 988                 !BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
 989             {
 990
 991                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 992                               AFS_TRACE_LEVEL_VERBOSE,
 993                               "AFSLocateNameEntry (FO: %08lX) Enumerating parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 994                               FileObject,
 995                               &pDirEntry->NameInformation.FileName,
 996                               pCurrentObject->FileId.Cell,
 997                               pCurrentObject->FileId.Volume,
 998                               pCurrentObject->FileId.Vnode,
 999                               pCurrentObject->FileId.Unique);
1000
1001                 AFSAcquireExcl( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1002                                 TRUE);
1003
1004                 if( !BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
1005                 {
1006
1007                     ntStatus = AFSEnumerateDirectory( AuthGroup,
1008                                                       pCurrentObject,
1009                                                       TRUE);
1010
1011                     if( !NT_SUCCESS( ntStatus))
1012                     {
1013
1014                         AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1015
1016                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1017                                       AFS_TRACE_LEVEL_ERROR,
1018                                       "AFSLocateNameEntry (FO: %08lX) Failed to enumerate parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
1019                                       FileObject,
1020                                       &pDirEntry->NameInformation.FileName,
1021                                       pCurrentObject->FileId.Cell,
1022                                       pCurrentObject->FileId.Volume,
1023                                       pCurrentObject->FileId.Vnode,
1024                                       pCurrentObject->FileId.Unique,
1025                                       ntStatus);
1026
1027                         try_return( ntStatus);
1028                     }
1029
1030                     SetFlag( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1031                 }
1032
1033                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1034             }
1035             else if( pCurrentObject->FileType == AFS_FILE_TYPE_FILE)
1036             {
1037
1038                 if( uniPathName.Length > 0)
1039                 {
1040
1041                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1042                                   AFS_TRACE_LEVEL_ERROR,
1043                                   "AFSLocateNameEntry (FO: %08lX) Encountered file node %wZ FID %08lX-%08lX-%08lX-%08lX in path processing\n",
1044                                   FileObject,
1045                                   &pDirEntry->NameInformation.FileName,
1046                                   pCurrentObject->FileId.Cell,
1047                                   pCurrentObject->FileId.Volume,
1048                                   pCurrentObject->FileId.Vnode,
1049                                   pCurrentObject->FileId.Unique);
1050
1051                     // The proper error code to return would be STATUS_OBJECT_PATH_INVALID because
1052                     // one of the components of the path is not a directory.  However, returning
1053                     // that error prevents IIS 7 and 7.5 from being able to serve data out of AFS.
1054                     // Instead IIS insists on treating the target file as if it is a directory containing
1055                     // a potential web.config file.  NTFS and LanMan return STATUS_OBJECT_PATH_NOT_FOUND.
1056                     // AFS will follow suit.
1057
1058                     ntStatus = STATUS_OBJECT_PATH_NOT_FOUND;
1059                 }
1060                 else
1061                 {
1062
1063                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1064                                   AFS_TRACE_LEVEL_VERBOSE,
1065                                   "AFSLocateNameEntry (FO: %08lX) Returning file %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1066                                   FileObject,
1067                                   &pDirEntry->NameInformation.FileName,
1068                                   pCurrentObject->FileId.Cell,
1069                                   pCurrentObject->FileId.Volume,
1070                                   pCurrentObject->FileId.Vnode,
1071                                   pCurrentObject->FileId.Unique);
1072
1073                     //
1074                     // Pass back the directory entries
1075                     //
1076
1077                     *ParentDirectoryCB = pParentDirEntry;
1078
1079                     *DirectoryCB = pDirEntry;
1080
1081                     *VolumeCB = pCurrentVolume;
1082
1083                     *RootPathName = uniFullPathName;
1084                 }
1085
1086                 try_return( ntStatus);
1087             }
1088
1089             //
1090             // If we are at the end of the processing, set our returned information and get out
1091             //
1092
1093             if( uniPathName.Length == 0)
1094             {
1095
1096                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1097                               AFS_TRACE_LEVEL_VERBOSE,
1098                               "AFSLocateNameEntry (FO: %08lX) Completed processing returning %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1099                               FileObject,
1100                               &pDirEntry->NameInformation.FileName,
1101                               pCurrentObject->FileId.Cell,
1102                               pCurrentObject->FileId.Volume,
1103                               pCurrentObject->FileId.Vnode,
1104                               pCurrentObject->FileId.Unique);
1105
1106                 //
1107                 // Pass back the directory entries
1108                 //
1109
1110                 *ParentDirectoryCB = pParentDirEntry;
1111
1112                 *DirectoryCB = pDirEntry;
1113
1114                 *VolumeCB = pCurrentVolume;
1115
1116                 *RootPathName = uniFullPathName;
1117
1118                 try_return( ntStatus);
1119             }
1120
1121             //
1122             // We may have returned to the top of the while( TRUE)
1123             //
1124             if( bSubstituteName &&
1125                 uniSearchName.Buffer != NULL)
1126             {
1127
1128                 AFSExFreePool( uniSearchName.Buffer);
1129
1130                 bSubstituteName = FALSE;
1131
1132                 uniSearchName.Length = uniSearchName.MaximumLength = 0;
1133                 uniSearchName.Buffer = NULL;
1134             }
1135
1136             ulSubstituteIndex = 1;
1137
1138             ntStatus = STATUS_SUCCESS;
1139
1140             //
1141             // Get the next component name
1142             //
1143
1144             FsRtlDissectName( uniPathName,
1145                               &uniComponentName,
1146                               &uniRemainingPath);
1147
1148             //
1149             // Check for the . and .. in the path
1150             //
1151
1152             if( RtlCompareUnicodeString( &uniComponentName,
1153                                          &uniNoOpName,
1154                                          TRUE) == 0)
1155             {
1156
1157                 uniPathName = uniRemainingPath;
1158
1159                 continue;
1160             }
1161
1162             if( RtlCompareUnicodeString( &uniComponentName,
1163                                          &uniRelativeName,
1164                                          TRUE) == 0)
1165             {
1166
1167                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1168                               AFS_TRACE_LEVEL_VERBOSE,
1169                               "AFSLocateNameEntry (FO: %08lX) Backing up entry from %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1170                               FileObject,
1171                               &pDirEntry->NameInformation.FileName,
1172                               pCurrentObject->FileId.Cell,
1173                               pCurrentObject->FileId.Volume,
1174                               pCurrentObject->FileId.Vnode,
1175                               pCurrentObject->FileId.Unique);
1176
1177                 //
1178                 // Need to back up one entry in the name array
1179                 //
1180
1181                 InterlockedDecrement( &pDirEntry->OpenReferenceCount);
1182
1183                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1184                               AFS_TRACE_LEVEL_VERBOSE,
1185                               "AFSLocateNameEntry Decrement4 count on %wZ DE %p Ccb %p Cnt %d\n",
1186                               &pDirEntry->NameInformation.FileName,
1187                               pDirEntry,
1188                               NULL,
1189                               pDirEntry->OpenReferenceCount);
1190
1191                 pDirEntry = AFSBackupEntry( NameArray);
1192
1193                 if( pDirEntry == NULL)
1194                 {
1195
1196                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1197                                   AFS_TRACE_LEVEL_ERROR,
1198                                   "AFSLocateNameEntry AFSBackupEntry failed\n");
1199
1200                     try_return(ntStatus = STATUS_OBJECT_PATH_INVALID);
1201                 }
1202
1203                 InterlockedIncrement( &pDirEntry->OpenReferenceCount);
1204
1205                 if( BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_ROOT_VOLUME))
1206                 {
1207
1208                     pParentDirEntry = NULL;
1209                 }
1210                 else
1211                 {
1212
1213                     pParentDirEntry = AFSGetParentEntry( pNameArray);
1214
1215                     ASSERT( pParentDirEntry != pDirEntry);
1216                 }
1217
1218                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1219                               AFS_TRACE_LEVEL_VERBOSE,
1220                               "AFSLocateNameEntry Increment4 count on %wZ DE %p Ccb %p Cnt %d\n",
1221                               &pDirEntry->NameInformation.FileName,
1222                               pDirEntry,
1223                               NULL,
1224                               pDirEntry->OpenReferenceCount);
1225
1226                 uniPathName = uniRemainingPath;
1227
1228                 continue;
1229             }
1230
1231             //
1232             // Update our pointers
1233             //
1234
1235             pParentDirEntry = pDirEntry;
1236
1237             pDirEntry = NULL;
1238
1239             uniSearchName = uniComponentName;
1240
1241             while( pDirEntry == NULL)
1242             {
1243
1244                 //
1245                 // If the SearchName contains @SYS then we perform the substitution.
1246                 // If there is no substitution we give up.
1247                 //
1248
1249                 if( !bSubstituteName &&
1250                     FsRtlIsNameInExpression( &uniSysName,
1251                                              &uniSearchName,
1252                                              TRUE,
1253                                              NULL))
1254                 {
1255
1256                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1257                                   AFS_TRACE_LEVEL_VERBOSE_2,
1258                                   "AFSLocateNameEntry (FO: %08lX) Processing @SYS substitution for %wZ Index %08lX\n",
1259                                   FileObject,
1260                                   &uniComponentName,
1261                                   ulSubstituteIndex);
1262
1263                     ntStatus = AFSSubstituteSysName( &uniComponentName,
1264                                                      &uniSearchName,
1265                                                      ulSubstituteIndex);
1266
1267                     if ( NT_SUCCESS( ntStatus))
1268                     {
1269
1270                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1271                                       AFS_TRACE_LEVEL_VERBOSE_2,
1272                                       "AFSLocateNameEntry (FO: %08lX) Located substitution %wZ for %wZ Index %08lX\n",
1273                                       FileObject,
1274                                       &uniSearchName,
1275                                       &uniComponentName,
1276                                       ulSubstituteIndex);
1277
1278                         //
1279                         // Go reparse the name again
1280                         //
1281
1282                         bSubstituteName = TRUE;
1283
1284                         ulSubstituteIndex++; // For the next entry, if needed
1285
1286                         continue;   // while( pDirEntry == NULL)
1287                     }
1288                     else
1289                     {
1290
1291                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1292                                       AFS_TRACE_LEVEL_ERROR,
1293                                       "AFSLocateNameEntry (FO: %08lX) Failed to locate substitute string for %wZ Index %08lX Status %08lX\n",
1294                                       FileObject,
1295                                       &uniComponentName,
1296                                       ulSubstituteIndex,
1297                                       ntStatus);
1298
1299                         if( ntStatus == STATUS_OBJECT_NAME_NOT_FOUND)
1300                         {
1301
1302                             //
1303                             // Pass back the directory entries
1304                             //
1305
1306                             *ParentDirectoryCB = pParentDirEntry;
1307
1308                             *DirectoryCB = NULL;
1309
1310                             *VolumeCB = pCurrentVolume;
1311
1312                             if( ComponentName != NULL)
1313                             {
1314
1315                                 *ComponentName = uniComponentName;
1316                             }
1317
1318                             *RootPathName = uniFullPathName;
1319                         }
1320
1321                         //
1322                         // We can't possibly have a pDirEntry since the lookup failed
1323                         //
1324                         try_return( ntStatus);
1325                     }
1326                 }
1327
1328                 //
1329                 // Generate the CRC on the node and perform a case sensitive lookup
1330                 //
1331
1332                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1333                               AFS_TRACE_LEVEL_VERBOSE_2,
1334                               "AFSLocateNameEntry (FO: %08lX) Searching for entry %wZ case sensitive\n",
1335                               FileObject,
1336                               &uniSearchName);
1337
1338                 ulCRC = AFSGenerateCRC( &uniSearchName,
1339                                         FALSE);
1340
1341                 AFSAcquireShared( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
1342                                   TRUE);
1343
1344                 AFSLocateCaseSensitiveDirEntry( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
1345                                                 ulCRC,
1346                                                 &pDirEntry);
1347
1348                 if( pDirEntry == NULL)
1349                 {
1350
1351                     //
1352                     // Missed so perform a case insensitive lookup
1353                     //
1354
1355                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1356                                   AFS_TRACE_LEVEL_VERBOSE_2,
1357                                   "AFSLocateNameEntry (FO: %08lX) Searching for entry %wZ case insensitive\n",
1358                                   FileObject,
1359                                   &uniSearchName);
1360
1361                     ulCRC = AFSGenerateCRC( &uniSearchName,
1362                                             TRUE);
1363
1364                     AFSLocateCaseInsensitiveDirEntry( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
1365                                                       ulCRC,
1366                                                       &pDirEntry);
1367
1368                     if( pDirEntry == NULL)
1369                     {
1370
1371                         //
1372                         // OK, if this component is a valid short name then try
1373                         // a lookup in the short name tree
1374                         //
1375
1376                         if( RtlIsNameLegalDOS8Dot3( &uniSearchName,
1377                                                     NULL,
1378                                                     NULL))
1379                         {
1380
1381                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1382                                           AFS_TRACE_LEVEL_VERBOSE_2,
1383                                           "AFSLocateNameEntry (FO: %08lX) Searching for entry %wZ short name\n",
1384                                           FileObject,
1385                                           &uniSearchName);
1386
1387                             AFSLocateShortNameDirEntry( pParentDirEntry->ObjectInformation->Specific.Directory.ShortNameTree,
1388                                                         ulCRC,
1389                                                         &pDirEntry);
1390                         }
1391
1392                         if( pDirEntry == NULL)
1393                         {
1394
1395                             //
1396                             // If we substituted a name then reset our search name and try again
1397                             //
1398
1399                             if( bSubstituteName)
1400                             {
1401
1402                                 AFSExFreePool( uniSearchName.Buffer);
1403
1404                                 uniSearchName = uniComponentName;
1405
1406                                 bSubstituteName = FALSE;
1407
1408                                 AFSReleaseResource( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
1409
1410                                 continue;       // while( pDirEntry == NULL)
1411                             }
1412
1413                             if( uniRemainingPath.Length > 0)
1414                             {
1415
1416                                 ntStatus = STATUS_OBJECT_PATH_NOT_FOUND;
1417                             }
1418                             else
1419                             {
1420
1421                                 ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
1422
1423                                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1424                                               AFS_TRACE_LEVEL_VERBOSE,
1425                                               "AFSLocateNameEntry (FO: %08lX) Returning name not found for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1426                                               FileObject,
1427                                               &uniSearchName,
1428                                               pCurrentObject->FileId.Cell,
1429                                               pCurrentObject->FileId.Volume,
1430                                               pCurrentObject->FileId.Vnode,
1431                                               pCurrentObject->FileId.Unique);
1432
1433                                 //
1434                                 // Pass back the directory entries
1435                                 //
1436
1437                                 *ParentDirectoryCB = pParentDirEntry;
1438
1439                                 *DirectoryCB = NULL;
1440
1441                                 *VolumeCB = pCurrentVolume;
1442
1443                                 if( ComponentName != NULL)
1444                                 {
1445
1446                                     *ComponentName = uniComponentName;
1447                                 }
1448
1449                                 *RootPathName = uniFullPathName;
1450                             }
1451
1452                             AFSReleaseResource( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
1453
1454                             //
1455                             // Node name not found so get out
1456                             //
1457
1458                             try_return( ntStatus);  // while( pDirEntry == NULL)
1459                         }
1460                     }
1461                     else
1462                     {
1463
1464                         //
1465                         // Here we have a match on the case insensitive lookup for the name. If there
1466                         // Is more than one link entry for this node then fail the lookup request
1467                         //
1468
1469                         if( !BooleanFlagOn( pDirEntry->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD) ||
1470                             pDirEntry->CaseInsensitiveList.fLink != NULL)
1471                         {
1472
1473                             AFSReleaseResource( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
1474
1475                             try_return(ntStatus = STATUS_OBJECT_NAME_COLLISION);
1476                         }
1477                     }
1478                 }
1479
1480                 if( pDirEntry != NULL)
1481                 {
1482
1483                     //
1484                     // If the verify flag is set on the parent and the current entry is deleted
1485                     // revalidate the parent and search again.
1486                     //
1487
1488                     if( BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1489                         BooleanFlagOn( pParentDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_VERIFY))
1490                     {
1491
1492                         AFSReleaseResource( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
1493
1494                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1495                                       AFS_TRACE_LEVEL_VERBOSE,
1496                                       "AFSLocateNameEntry (FO: %08lX) Verifying(2) parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1497                                       FileObject,
1498                                       &pParentDirEntry->NameInformation.FileName,
1499                                       pParentDirEntry->ObjectInformation->FileId.Cell,
1500                                       pParentDirEntry->ObjectInformation->FileId.Volume,
1501                                       pParentDirEntry->ObjectInformation->FileId.Vnode,
1502                                       pParentDirEntry->ObjectInformation->FileId.Unique);
1503
1504                         ntStatus = AFSVerifyEntry( AuthGroup,
1505                                                    pParentDirEntry);
1506
1507                         if( !NT_SUCCESS( ntStatus))
1508                         {
1509
1510                             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1511                                           AFS_TRACE_LEVEL_ERROR,
1512                                           "AFSLocateNameEntry (FO: %08lX) Failed to verify(2) parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
1513                                           FileObject,
1514                                           &pParentDirEntry->NameInformation.FileName,
1515                                           pParentDirEntry->ObjectInformation->FileId.Cell,
1516                                           pParentDirEntry->ObjectInformation->FileId.Volume,
1517                                           pParentDirEntry->ObjectInformation->FileId.Vnode,
1518                                           pParentDirEntry->ObjectInformation->FileId.Unique,
1519                                           ntStatus);
1520
1521                             try_return( ntStatus);
1522                         }
1523
1524                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1525                                       AFS_TRACE_LEVEL_VERBOSE,
1526                                       "AFSLocateNameEntry (FO: %08lX) Reprocessing component %wZ in parent %wZ\n",
1527                                       FileObject,
1528                                       &uniSearchName,
1529                                       &pParentDirEntry->NameInformation.FileName);
1530
1531
1532                         pDirEntry = NULL;
1533
1534                         continue;
1535                     }
1536
1537                     //
1538                     // Increment our dir entry ref count
1539                     //
1540
1541                     InterlockedIncrement( &pDirEntry->OpenReferenceCount);
1542
1543                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1544                                   AFS_TRACE_LEVEL_VERBOSE,
1545                                   "AFSLocateNameEntry Increment5 count on %wZ DE %p Ccb %p Cnt %d\n",
1546                                   &pDirEntry->NameInformation.FileName,
1547                                   pDirEntry,
1548                                   NULL,
1549                                   pDirEntry->OpenReferenceCount);
1550                 }
1551
1552                 AFSReleaseResource( pParentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
1553
1554             } // End while( pDirEntry == NULL)
1555
1556             //
1557             // If we have a dirEntry for this component, perform some basic validation on it
1558             //
1559
1560             if( pDirEntry != NULL &&
1561                 BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_DELETED))
1562             {
1563
1564                 pCurrentObject = pDirEntry->ObjectInformation;
1565
1566                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1567                               AFS_TRACE_LEVEL_ERROR,
1568                               "AFSLocateNameEntry (FO: %08lX) Deleted parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1569                               FileObject,
1570                               &pDirEntry->NameInformation.FileName,
1571                               pCurrentObject->FileId.Cell,
1572                               pCurrentObject->FileId.Volume,
1573                               pCurrentObject->FileId.Vnode,
1574                               pCurrentObject->FileId.Unique);
1575
1576                 //
1577                 // This entry was deleted through the invalidation call back so perform cleanup
1578                 // on the entry
1579                 //
1580
1581                 ASSERT( pCurrentObject->ParentObjectInformation != NULL);
1582
1583                 AFSAcquireExcl( pCurrentObject->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
1584                                 TRUE);
1585
1586                 AFSAcquireExcl( pCurrentObject->VolumeCB->ObjectInfoTree.TreeLock,
1587                                 TRUE);
1588
1589                 if( InterlockedDecrement( &pDirEntry->OpenReferenceCount) == 0)
1590                 {
1591
1592                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1593                                   AFS_TRACE_LEVEL_VERBOSE,
1594                                   "AFSLocateNameEntry Deleting dir entry %08lX (%08lX) for %wZ\n",
1595                                   pDirEntry,
1596                                   pCurrentObject,
1597                                   &pDirEntry->NameInformation.FileName);
1598
1599                     //
1600                     // Remove and delete the directory entry from the parent list
1601                     //
1602
1603                     AFSDeleteDirEntry( pCurrentObject->ParentObjectInformation,
1604                                        pDirEntry);
1605
1606                     if( pCurrentObject->ObjectReferenceCount == 0)
1607                     {
1608
1609                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
1610                         {
1611
1612                             AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1613                                           AFS_TRACE_LEVEL_VERBOSE,
1614                                           "AFSLocateNameEntry Removing object %08lX from volume tree\n",
1615                                           pCurrentObject);
1616
1617                             AFSRemoveHashEntry( &pCurrentObject->VolumeCB->ObjectInfoTree.TreeHead,
1618                                                 &pCurrentObject->TreeEntry);
1619
1620                             ClearFlag( pCurrentObject->Flags, AFS_OBJECT_INSERTED_HASH_TREE);
1621                         }
1622                     }
1623                 }
1624                 else
1625                 {
1626
1627                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1628                                   AFS_TRACE_LEVEL_VERBOSE,
1629                                   "AFSLocateNameEntry Setting DELETE flag in dir entry %p for %wZ\n",
1630                                   pDirEntry,
1631                                   &pDirEntry->NameInformation.FileName);
1632
1633                     SetFlag( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
1634
1635                     AFSRemoveNameEntry( pCurrentObject->ParentObjectInformation,
1636                                         pDirEntry);
1637                 }
1638
1639                 AFSReleaseResource( pCurrentObject->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
1640
1641                 AFSReleaseResource( pCurrentObject->VolumeCB->ObjectInfoTree.TreeLock);
1642
1643                 //
1644                 // We deleted the dir entry so check if there is any remaining portion
1645                 // of the name to process.
1646                 //
1647
1648                 if( uniRemainingPath.Length > 0)
1649                 {
1650                     ntStatus = STATUS_OBJECT_PATH_NOT_FOUND;
1651                 }
1652                 else
1653                 {
1654
1655                     ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
1656
1657                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1658                                   AFS_TRACE_LEVEL_VERBOSE,
1659                                   "AFSLocateNameEntry (FO: %08lX) Returning name not found(2) for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1660                                   FileObject,
1661                                   &uniComponentName,
1662                                   pCurrentObject->FileId.Cell,
1663                                   pCurrentObject->FileId.Volume,
1664                                   pCurrentObject->FileId.Vnode,
1665                                   pCurrentObject->FileId.Unique);
1666
1667                     //
1668                     // Pass back the directory entries
1669                     //
1670
1671                     *ParentDirectoryCB = pParentDirEntry;
1672
1673                     *DirectoryCB = NULL;
1674
1675                     *VolumeCB = pCurrentVolume;
1676
1677                     if( ComponentName != NULL)
1678                     {
1679
1680                         *ComponentName = uniComponentName;
1681                     }
1682
1683                     *RootPathName = uniFullPathName;
1684                 }
1685             }
1686
1687             if( ntStatus != STATUS_SUCCESS)
1688             {
1689
1690                 try_return( ntStatus);
1691             }
1692
1693             //
1694             // Decrement the previous parent
1695             //
1696
1697             InterlockedDecrement( &pParentDirEntry->OpenReferenceCount);
1698
1699             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1700                           AFS_TRACE_LEVEL_VERBOSE,
1701                           "AFSLocateNameEntry Decrement5 count on Parent %wZ DE %p Ccb %p Cnt %d\n",
1702                           &pParentDirEntry->NameInformation.FileName,
1703                           pParentDirEntry,
1704                           NULL,
1705                           pParentDirEntry->OpenReferenceCount);
1706
1707             //
1708             // If we ended up substituting a name in the component then update
1709             // the full path and update the pointers
1710             //
1711
1712             if( bSubstituteName)
1713             {
1714
1715                 BOOLEAN bRelativeOpen = FALSE;
1716
1717                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1718                               AFS_TRACE_LEVEL_VERBOSE_2,
1719                               "AFSLocateNameEntry (FO: %08lX) Substituting %wZ into %wZ Index %08lX\n",
1720                               FileObject,
1721                               &uniSearchName,
1722                               &uniComponentName,
1723                               ulSubstituteIndex);
1724
1725                 if( FileObject != NULL &&
1726                     FileObject->RelatedFileObject != NULL)
1727                 {
1728
1729                     bRelativeOpen = TRUE;
1730                 }
1731
1732                 //
1733                 // AFSSubstituteNameInPath will replace the uniFullPathName.Buffer
1734                 // and free the prior Buffer contents but only if the fourth
1735                 // parameter is TRUE.
1736                 //
1737
1738                 ntStatus = AFSSubstituteNameInPath( &uniFullPathName,
1739                                                     &uniComponentName,
1740                                                     &uniSearchName,
1741                                                     &uniRemainingPath,
1742                                                     bRelativeOpen ||
1743                                                             bAllocatedSymLinkBuffer ||
1744                                                             bSubstitutedName);
1745
1746                 if( !NT_SUCCESS( ntStatus))
1747                 {
1748
1749                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1750                                   AFS_TRACE_LEVEL_ERROR,
1751                                   "AFSLocateNameEntry (FO: %08lX) Failure to substitute %wZ into %wZ Index %08lX Status %08lX\n",
1752                                   FileObject,
1753                                   &uniSearchName,
1754                                   &uniComponentName,
1755                                   ulSubstituteIndex,
1756                                   ntStatus);
1757
1758                     try_return( ntStatus);
1759                 }
1760
1761                 //
1762                 // We have substituted a name into the buffer so if we do this again for this
1763                 // path, we need to free up the buffer we allocated.
1764                 //
1765
1766                 bSubstitutedName = TRUE;
1767             }
1768
1769             //
1770             // Update the search parameters
1771             //
1772
1773             uniPathName = uniRemainingPath;
1774
1775             //
1776             // Check if the is a SymLink entry but has no Target FileID or Name. In this
1777             // case it might be a DFS Link so let's go and evaluate it to be sure
1778             //
1779
1780             if( pCurrentObject->FileType == AFS_FILE_TYPE_SYMLINK &&
1781                 pCurrentObject->TargetFileId.Vnode == 0 &&
1782                 pCurrentObject->TargetFileId.Unique == 0 &&
1783                 pDirEntry->NameInformation.TargetName.Length == 0)
1784             {
1785
1786                 ntStatus = AFSValidateSymLink( AuthGroup,
1787                                                pDirEntry);
1788
1789                 if( !NT_SUCCESS( ntStatus))
1790                 {
1791
1792                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1793                                   AFS_TRACE_LEVEL_ERROR,
1794                                   "AFSLocateNameEntry (FO: %08lX) Failed to evaluate possible DFS Link %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
1795                                   FileObject,
1796                                   &pDirEntry->NameInformation.FileName,
1797                                   pCurrentObject->FileId.Cell,
1798                                   pCurrentObject->FileId.Volume,
1799                                   pCurrentObject->FileId.Vnode,
1800                                   pCurrentObject->FileId.Unique,
1801                                   ntStatus);
1802
1803                     try_return( ntStatus);
1804                 }
1805             }
1806
1807             //
1808             // Update the name array
1809             //
1810
1811             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1812                           AFS_TRACE_LEVEL_VERBOSE,
1813                           "AFSLocateNameEntry (FO: %08lX) Inserting name array entry %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1814                           FileObject,
1815                           &pDirEntry->NameInformation.FileName,
1816                           pCurrentObject->FileId.Cell,
1817                           pCurrentObject->FileId.Volume,
1818                           pCurrentObject->FileId.Vnode,
1819                           pCurrentObject->FileId.Unique);
1820
1821             ntStatus = AFSInsertNextElement( pNameArray,
1822                                              pDirEntry);
1823
1824             if( !NT_SUCCESS( ntStatus))
1825             {
1826
1827                 try_return( ntStatus);
1828             }
1829         }       // while (TRUE)
1830
1831 try_exit:
1832
1833         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1834                       AFS_TRACE_LEVEL_VERBOSE,
1835                       "AFSLocateNameEntry (FO: %08lX) Completed processing %wZ Status %08lX\n",
1836                       FileObject,
1837                       RootPathName,
1838                       ntStatus);
1839
1840         if( ( !NT_SUCCESS( ntStatus) &&
1841               ntStatus != STATUS_OBJECT_NAME_NOT_FOUND) ||
1842             ntStatus == STATUS_REPARSE)
1843         {
1844
1845             if( pDirEntry != NULL)
1846             {
1847
1848                 InterlockedDecrement( &pDirEntry->OpenReferenceCount);
1849
1850                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1851                               AFS_TRACE_LEVEL_VERBOSE,
1852                               "AFSLocateNameEntry Decrement6 count on %wZ DE %p Ccb %p Cnt %d\n",
1853                               &pDirEntry->NameInformation.FileName,
1854                               pDirEntry,
1855                               NULL,
1856                               pDirEntry->OpenReferenceCount);
1857             }
1858             else if( pParentDirEntry != NULL)
1859             {
1860
1861                 InterlockedDecrement( &pParentDirEntry->OpenReferenceCount);
1862
1863                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1864                               AFS_TRACE_LEVEL_VERBOSE,
1865                               "AFSLocateNameEntry Decrement7 count on %wZ DE %p Ccb %p Cnt %d\n",
1866                               &pParentDirEntry->NameInformation.FileName,
1867                               pParentDirEntry,
1868                               NULL,
1869                               pParentDirEntry->OpenReferenceCount);
1870             }
1871
1872             if( bReleaseCurrentVolume)
1873             {
1874
1875                 ASSERT( pCurrentVolume->VolumeReferenceCount > 1);
1876
1877                 ASSERT( ExIsResourceAcquiredLite( pCurrentVolume->VolumeLock));
1878
1879                 InterlockedDecrement( &pCurrentVolume->VolumeReferenceCount);
1880
1881                 AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
1882                               AFS_TRACE_LEVEL_VERBOSE,
1883                               "AFSLocateNameEntry Decrement3 count on volume %08lX Cnt %d\n",
1884                               pCurrentVolume,
1885                               pCurrentVolume->VolumeReferenceCount);
1886
1887                 AFSReleaseResource( pCurrentVolume->VolumeLock);
1888             }
1889
1890             if( RootPathName->Buffer != uniFullPathName.Buffer)
1891             {
1892
1893                 AFSExFreePool( uniFullPathName.Buffer);
1894             }
1895         }
1896         else
1897         {
1898
1899             if( *ParentDirectoryCB != NULL)
1900             {
1901
1902                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1903                               AFS_TRACE_LEVEL_VERBOSE,
1904                               "AFSLocateNameEntry Count on Parent %wZ DE %p Ccb %p Cnt %d\n",
1905                               &(*ParentDirectoryCB)->NameInformation.FileName,
1906                               *ParentDirectoryCB,
1907                               NULL,
1908                               (*ParentDirectoryCB)->OpenReferenceCount);
1909             }
1910
1911             if( *DirectoryCB != NULL)
1912             {
1913
1914                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1915                               AFS_TRACE_LEVEL_VERBOSE,
1916                               "AFSLocateNameEntry Count on %wZ DE %p Ccb %p Cnt %d\n",
1917                               &(*DirectoryCB)->NameInformation.FileName,
1918                               *DirectoryCB,
1919                               NULL,
1920                               (*DirectoryCB)->OpenReferenceCount);
1921             }
1922         }
1923
1924         if( bSubstituteName &&
1925             uniSearchName.Buffer != NULL)
1926         {
1927
1928             AFSExFreePool( uniSearchName.Buffer);
1929         }
1930     }
1931
1932     return ntStatus;
1933 }
1934
1935 NTSTATUS
1936 AFSCreateDirEntry( IN GUID            *AuthGroup,
1937                    IN AFSObjectInfoCB *ParentObjectInfo,
1938                    IN AFSDirectoryCB *ParentDirCB,
1939                    IN PUNICODE_STRING FileName,
1940                    IN PUNICODE_STRING ComponentName,
1941                    IN ULONG Attributes,
1942                    IN OUT AFSDirectoryCB **DirEntry)
1943 {
1944
1945     NTSTATUS ntStatus = STATUS_SUCCESS;
1946     AFSDirectoryCB *pDirNode = NULL;
1947     UNICODE_STRING uniShortName;
1948     LARGE_INTEGER liFileSize = {0,0};
1949
1950     __Enter
1951     {
1952
1953         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1954                       AFS_TRACE_LEVEL_VERBOSE_2,
1955                       "AFSCreateDirEntry Creating dir entry in parent %wZ FID %08lX-%08lX-%08lX-%08lX Component %wZ Attribs %08lX\n",
1956                       &ParentDirCB->NameInformation.FileName,
1957                       ParentObjectInfo->FileId.Cell,
1958                       ParentObjectInfo->FileId.Volume,
1959                       ParentObjectInfo->FileId.Vnode,
1960                       ParentObjectInfo->FileId.Unique,
1961                       ComponentName,
1962                       Attributes);
1963
1964         //
1965         // OK, before inserting the node into the parent tree, issue
1966         // the request to the service for node creation
1967         // We will need to drop the lock on the parent node since the create
1968         // could cause a callback into the file system to invalidate it's cache
1969         //
1970
1971         ntStatus = AFSNotifyFileCreate( AuthGroup,
1972                                         ParentObjectInfo,
1973                                         &liFileSize,
1974                                         Attributes,
1975                                         ComponentName,
1976                                         &pDirNode);
1977
1978         //
1979         // If the returned status is STATUS_REPARSE then the entry exists
1980         // and we raced, get out.
1981
1982         if( ntStatus == STATUS_REPARSE)
1983         {
1984
1985             *DirEntry = pDirNode;
1986
1987             try_return( ntStatus = STATUS_SUCCESS);
1988         }
1989
1990         if( !NT_SUCCESS( ntStatus))
1991         {
1992
1993             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1994                           AFS_TRACE_LEVEL_ERROR,
1995                           "AFSCreateDirEntry Failed to create dir entry in parent %wZ FID %08lX-%08lX-%08lX-%08lX Component %wZ Attribs %08lX Status %08lX\n",
1996                           &ParentDirCB->NameInformation.FileName,
1997                           ParentObjectInfo->FileId.Cell,
1998                           ParentObjectInfo->FileId.Volume,
1999                           ParentObjectInfo->FileId.Vnode,
2000                           ParentObjectInfo->FileId.Unique,
2001                           ComponentName,
2002                           Attributes,
2003                           ntStatus);
2004
2005             try_return( ntStatus);
2006         }
2007
2008         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2009                       AFS_TRACE_LEVEL_VERBOSE_2,
2010                       "AFSCreateDirEntry Inserting dir entry in parent %wZ FID %08lX-%08lX-%08lX-%08lX Component %wZ\n",
2011                       &ParentDirCB->NameInformation.FileName,
2012                       ParentObjectInfo->FileId.Cell,
2013                       ParentObjectInfo->FileId.Volume,
2014                       ParentObjectInfo->FileId.Vnode,
2015                       ParentObjectInfo->FileId.Unique,
2016                       ComponentName);
2017
2018         //
2019         // Insert the directory node
2020         //
2021
2022         AFSInsertDirectoryNode( ParentObjectInfo,
2023                                 pDirNode,
2024                                 TRUE);
2025
2026         //
2027         // Pass back the dir entry
2028         //
2029
2030         *DirEntry = pDirNode;
2031
2032 try_exit:
2033
2034         NOTHING;
2035     }
2036
2037     return ntStatus;
2038 }
2039
2040 void
2041 AFSInsertDirectoryNode( IN AFSObjectInfoCB *ParentObjectInfo,
2042                         IN AFSDirectoryCB *DirEntry,
2043                         IN BOOLEAN InsertInEnumList)
2044 {
2045
2046     __Enter
2047     {
2048
2049         AFSAcquireExcl( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
2050                         TRUE);
2051
2052         //
2053         // Insert the node into the directory node tree
2054         //
2055
2056         ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
2057
2058         if( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead == NULL)
2059         {
2060
2061             ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = DirEntry;
2062         }
2063         else
2064         {
2065
2066             AFSInsertCaseSensitiveDirEntry( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
2067                                             DirEntry);
2068         }
2069
2070         if( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead == NULL)
2071         {
2072
2073             ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = DirEntry;
2074
2075             SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
2076         }
2077         else
2078         {
2079
2080             AFSInsertCaseInsensitiveDirEntry( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
2081                                               DirEntry);
2082         }
2083
2084         //
2085         // Into the shortname tree
2086         //
2087
2088         if( DirEntry->Type.Data.ShortNameTreeEntry.HashIndex != 0)
2089         {
2090
2091             if( ParentObjectInfo->Specific.Directory.ShortNameTree == NULL)
2092             {
2093
2094                 ParentObjectInfo->Specific.Directory.ShortNameTree = DirEntry;
2095             }
2096             else
2097             {
2098
2099                 AFSInsertShortNameDirEntry( ParentObjectInfo->Specific.Directory.ShortNameTree,
2100                                             DirEntry);
2101             }
2102         }
2103
2104         if( InsertInEnumList)
2105         {
2106
2107             //
2108             // And insert the node into the directory list
2109             //
2110
2111             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2112                           AFS_TRACE_LEVEL_VERBOSE,
2113                           "AFSInsertDirectoryNode Inserting entry %08lX %wZ FID %08lX-%08lX-%08lX-%08lXStatus %08lX\n",
2114                           DirEntry,
2115                           &DirEntry->NameInformation.FileName,
2116                           DirEntry->ObjectInformation->FileId.Cell,
2117                           DirEntry->ObjectInformation->FileId.Volume,
2118                           DirEntry->ObjectInformation->FileId.Vnode,
2119                           DirEntry->ObjectInformation->FileId.Unique);
2120
2121             if( ParentObjectInfo->Specific.Directory.DirectoryNodeListHead == NULL)
2122             {
2123
2124                 ParentObjectInfo->Specific.Directory.DirectoryNodeListHead = DirEntry;
2125             }
2126             else
2127             {
2128
2129                 ParentObjectInfo->Specific.Directory.DirectoryNodeListTail->ListEntry.fLink = (void *)DirEntry;
2130
2131                 DirEntry->ListEntry.bLink = (void *)ParentObjectInfo->Specific.Directory.DirectoryNodeListTail;
2132             }
2133
2134             ParentObjectInfo->Specific.Directory.DirectoryNodeListTail = DirEntry;
2135
2136             SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST);
2137
2138             InterlockedIncrement( &ParentObjectInfo->Specific.Directory.DirectoryNodeCount);
2139
2140             AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
2141                           AFS_TRACE_LEVEL_VERBOSE,
2142                           "AFSInsertDirectoryNode Adding entry %wZ Inc Count %d to parent FID %08lX-%08lX-%08lX-%08lX\n",
2143                               &DirEntry->NameInformation.FileName,
2144                               ParentObjectInfo->Specific.Directory.DirectoryNodeCount,
2145                               ParentObjectInfo->FileId.Cell,
2146                               ParentObjectInfo->FileId.Volume,
2147                               ParentObjectInfo->FileId.Vnode,
2148                               ParentObjectInfo->FileId.Unique);
2149         }
2150
2151         AFSReleaseResource( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
2152     }
2153
2154     return;
2155 }
2156
2157 NTSTATUS
2158 AFSDeleteDirEntry( IN AFSObjectInfoCB *ParentObjectInfo,
2159                    IN AFSDirectoryCB *DirEntry)
2160 {
2161
2162     NTSTATUS ntStatus = STATUS_SUCCESS;
2163
2164     __Enter
2165     {
2166
2167         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2168                       AFS_TRACE_LEVEL_VERBOSE,
2169                       "AFSDeleteDirEntry Deleting dir entry in parent %08lX Entry %08lX %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2170                       ParentObjectInfo,
2171                       DirEntry,
2172                       &DirEntry->NameInformation.FileName,
2173                       DirEntry->ObjectInformation->FileId.Cell,
2174                       DirEntry->ObjectInformation->FileId.Volume,
2175                       DirEntry->ObjectInformation->FileId.Vnode,
2176                       DirEntry->ObjectInformation->FileId.Unique);
2177
2178         AFSRemoveDirNodeFromParent( ParentObjectInfo,
2179                                     DirEntry,
2180                                     TRUE);
2181
2182         //
2183         // Free up the name buffer if it was reallocated
2184         //
2185
2186         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_RELEASE_NAME_BUFFER))
2187         {
2188
2189             AFSExFreePool( DirEntry->NameInformation.FileName.Buffer);
2190         }
2191
2192         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER))
2193         {
2194
2195             AFSExFreePool( DirEntry->NameInformation.TargetName.Buffer);
2196         }
2197
2198         //
2199         // Dereference the object for this dir entry
2200         //
2201
2202         ASSERT( DirEntry->ObjectInformation->ObjectReferenceCount > 0);
2203
2204         InterlockedDecrement( &DirEntry->ObjectInformation->ObjectReferenceCount);
2205
2206         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2207                       AFS_TRACE_LEVEL_VERBOSE,
2208                       "AFSDeleteDirEntry Decrement count on object %08lX Cnt %d\n",
2209                       DirEntry->ObjectInformation,
2210                       DirEntry->ObjectInformation->ObjectReferenceCount);
2211
2212         ExDeleteResourceLite( &DirEntry->NonPaged->Lock);
2213
2214         AFSExFreePool( DirEntry->NonPaged);
2215
2216         //
2217         // Free up the dir entry
2218         //
2219
2220         AFSExFreePool( DirEntry);
2221     }
2222
2223     return ntStatus;
2224 }
2225
2226 NTSTATUS
2227 AFSRemoveDirNodeFromParent( IN AFSObjectInfoCB *ParentObjectInfo,
2228                             IN AFSDirectoryCB *DirEntry,
2229                             IN BOOLEAN RemoveFromEnumList)
2230 {
2231
2232     NTSTATUS ntStatus = STATUS_SUCCESS;
2233
2234     __Enter
2235     {
2236
2237
2238         ASSERT( ExIsResourceAcquiredExclusiveLite( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock));
2239
2240         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2241                       AFS_TRACE_LEVEL_VERBOSE,
2242                       "AFSRemoveDirNodeFromParent Removing DirEntry %08lX %wZ FID %08lX-%08lX-%08lX-%08lX from Parent %08lX\n",
2243                       DirEntry,
2244                       &DirEntry->NameInformation.FileName,
2245                       DirEntry->ObjectInformation->FileId.Cell,
2246                       DirEntry->ObjectInformation->FileId.Volume,
2247                       DirEntry->ObjectInformation->FileId.Vnode,
2248                       DirEntry->ObjectInformation->FileId.Unique,
2249                       ParentObjectInfo);
2250
2251         if( !BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
2252         {
2253
2254             AFSRemoveNameEntry( ParentObjectInfo,
2255                                 DirEntry);
2256         }
2257
2258         if( RemoveFromEnumList &&
2259             BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST))
2260         {
2261
2262             //
2263             // And remove the entry from the enumeration list
2264             //
2265
2266             if( DirEntry->ListEntry.fLink == NULL)
2267             {
2268
2269                 ParentObjectInfo->Specific.Directory.DirectoryNodeListTail = (AFSDirectoryCB *)DirEntry->ListEntry.bLink;
2270             }
2271             else
2272             {
2273
2274                 ((AFSDirectoryCB *)DirEntry->ListEntry.fLink)->ListEntry.bLink = DirEntry->ListEntry.bLink;
2275             }
2276
2277             if( DirEntry->ListEntry.bLink == NULL)
2278             {
2279
2280                 ParentObjectInfo->Specific.Directory.DirectoryNodeListHead = (AFSDirectoryCB *)DirEntry->ListEntry.fLink;
2281             }
2282             else
2283             {
2284
2285                 ((AFSDirectoryCB *)DirEntry->ListEntry.bLink)->ListEntry.fLink = DirEntry->ListEntry.fLink;
2286             }
2287
2288             ASSERT( ParentObjectInfo->Specific.Directory.DirectoryNodeCount > 0);
2289
2290             InterlockedDecrement( &ParentObjectInfo->Specific.Directory.DirectoryNodeCount);
2291
2292             ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST);
2293
2294             AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
2295                           AFS_TRACE_LEVEL_VERBOSE,
2296                           "AFSRemoveDirNodeFromParent Removing entry %wZ Dec Count %d to parent FID %08lX-%08lX-%08lX-%08lX\n",
2297                           &DirEntry->NameInformation.FileName,
2298                           ParentObjectInfo->Specific.Directory.DirectoryNodeCount,
2299                           ParentObjectInfo->FileId.Cell,
2300                           ParentObjectInfo->FileId.Volume,
2301                           ParentObjectInfo->FileId.Vnode,
2302                           ParentObjectInfo->FileId.Unique);
2303
2304             DirEntry->ListEntry.fLink = NULL;
2305             DirEntry->ListEntry.bLink = NULL;
2306         }
2307     }
2308
2309     return ntStatus;
2310 }
2311
2312 NTSTATUS
2313 AFSFixupTargetName( IN OUT PUNICODE_STRING FileName,
2314                     IN OUT PUNICODE_STRING TargetFileName)
2315 {
2316
2317     NTSTATUS ntStatus = STATUS_SUCCESS;
2318     UNICODE_STRING uniFileName;
2319
2320     __Enter
2321     {
2322
2323         //
2324         // We will process backwards from the end of the name looking
2325         // for the first \ we encounter
2326         //
2327
2328         uniFileName.Length = FileName->Length;
2329         uniFileName.MaximumLength = FileName->MaximumLength;
2330
2331         uniFileName.Buffer = FileName->Buffer;
2332
2333         while( TRUE)
2334         {
2335
2336             if( uniFileName.Buffer[ (uniFileName.Length/sizeof( WCHAR)) - 1] == L'\\')
2337             {
2338
2339                 //
2340                 // Subtract one more character off of the filename if it is not the root
2341                 //
2342
2343                 if( uniFileName.Length > sizeof( WCHAR))
2344                 {
2345
2346                     uniFileName.Length -= sizeof( WCHAR);
2347                 }
2348
2349                 //
2350                 // Now build up the target name
2351                 //
2352
2353                 TargetFileName->Length = FileName->Length - uniFileName.Length;
2354
2355                 //
2356                 // If we are not on the root then fixup the name
2357                 //
2358
2359                 if( uniFileName.Length > sizeof( WCHAR))
2360                 {
2361
2362                     TargetFileName->Length -= sizeof( WCHAR);
2363
2364                     TargetFileName->Buffer = &uniFileName.Buffer[ (uniFileName.Length/sizeof( WCHAR)) + 1];
2365                 }
2366                 else
2367                 {
2368
2369                     TargetFileName->Buffer = &uniFileName.Buffer[ uniFileName.Length/sizeof( WCHAR)];
2370                 }
2371
2372                 //
2373                 // Fixup the passed back filename length
2374                 //
2375
2376                 FileName->Length = uniFileName.Length;
2377
2378                 TargetFileName->MaximumLength = TargetFileName->Length;
2379
2380                 break;
2381             }
2382
2383             uniFileName.Length -= sizeof( WCHAR);
2384         }
2385     }
2386
2387     return ntStatus;
2388 }
2389
2390 NTSTATUS
2391 AFSParseName( IN PIRP Irp,
2392               IN GUID *AuthGroup,
2393               OUT PUNICODE_STRING FileName,
2394               OUT PUNICODE_STRING ParsedFileName,
2395               OUT PUNICODE_STRING RootFileName,
2396               OUT ULONG *ParseFlags,
2397               OUT AFSVolumeCB   **VolumeCB,
2398               OUT AFSDirectoryCB **ParentDirectoryCB,
2399               OUT AFSNameArrayHdr **NameArray)
2400 {
2401
2402     NTSTATUS            ntStatus = STATUS_SUCCESS;
2403     PIO_STACK_LOCATION  pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2404     AFSDeviceExt       *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2405     UNICODE_STRING      uniFullName, uniComponentName, uniRemainingPath;
2406     ULONG               ulCRC = 0;
2407     AFSDirectoryCB     *pDirEntry = NULL, *pShareDirEntry = NULL, *pTargetDirEntry = NULL;
2408     USHORT              usIndex = 0, usDriveIndex = 0;
2409     AFSCcb             *pRelatedCcb = NULL;
2410     AFSNameArrayHdr    *pNameArray = NULL, *pRelatedNameArray = NULL;
2411     USHORT              usComponentIndex = 0;
2412     USHORT              usComponentLength = 0;
2413     AFSVolumeCB        *pVolumeCB = NULL;
2414     AFSFcb             *pRelatedFcb = NULL;
2415     BOOLEAN             bReleaseTreeLock = FALSE;
2416     BOOLEAN             bIsAllShare = FALSE;
2417
2418     __Enter
2419     {
2420
2421         //
2422         // Indicate we are opening a root ...
2423         //
2424
2425         *ParseFlags = AFS_PARSE_FLAG_ROOT_ACCESS;
2426
2427         if( pIrpSp->FileObject->RelatedFileObject != NULL)
2428         {
2429
2430             pRelatedFcb = (AFSFcb *)pIrpSp->FileObject->RelatedFileObject->FsContext;
2431
2432             pRelatedCcb = (AFSCcb *)pIrpSp->FileObject->RelatedFileObject->FsContext2;
2433
2434             pRelatedNameArray = pRelatedCcb->NameArray;
2435
2436             uniFullName = pIrpSp->FileObject->FileName;
2437
2438             ASSERT( pRelatedFcb != NULL);
2439
2440             //
2441             // No wild cards in the name
2442             //
2443
2444             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2445                           AFS_TRACE_LEVEL_VERBOSE_2,
2446                           "AFSParseName (%08lX) Relative open for %wZ FID %08lX-%08lX-%08lX-%08lX component %wZ\n",
2447                           Irp,
2448                           &pRelatedCcb->DirectoryCB->NameInformation.FileName,
2449                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Cell,
2450                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Volume,
2451                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
2452                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Unique,
2453                           &uniFullName);
2454
2455             if( FsRtlDoesNameContainWildCards( &uniFullName))
2456             {
2457
2458                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2459                               AFS_TRACE_LEVEL_ERROR,
2460                               "AFSParseName (%08lX) Component %wZ contains wild cards\n",
2461                               Irp,
2462                               &uniFullName);
2463
2464                 try_return( ntStatus = STATUS_OBJECT_NAME_INVALID);
2465             }
2466
2467             pVolumeCB = pRelatedFcb->ObjectInformation->VolumeCB;
2468
2469             pDirEntry = pRelatedCcb->DirectoryCB;
2470
2471             *FileName = pIrpSp->FileObject->FileName;
2472
2473             //
2474             // Grab the root node exclusive before returning
2475             //
2476
2477             AFSAcquireExcl( pVolumeCB->VolumeLock,
2478                             TRUE);
2479
2480             if( BooleanFlagOn( pVolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
2481                 BooleanFlagOn( pVolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE))
2482             {
2483
2484                 //
2485                 // The volume has been taken off line so fail the access
2486                 //
2487
2488                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2489                               AFS_TRACE_LEVEL_ERROR,
2490                               "AFSParseName (%08lX) Volume %08lX:%08lX OFFLINE/INVALID\n",
2491                               Irp,
2492                               pVolumeCB->ObjectInformation.FileId.Cell,
2493                               pVolumeCB->ObjectInformation.FileId.Volume);
2494
2495                 AFSReleaseResource( pVolumeCB->VolumeLock);
2496
2497                 try_return( ntStatus = STATUS_DEVICE_NOT_READY);
2498             }
2499
2500             if( BooleanFlagOn( pVolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_VERIFY))
2501             {
2502
2503                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2504                               AFS_TRACE_LEVEL_VERBOSE,
2505                               "AFSParseName (%08lX) Verifying root of volume %08lX:%08lX\n",
2506                               Irp,
2507                               pVolumeCB->ObjectInformation.FileId.Cell,
2508                               pVolumeCB->ObjectInformation.FileId.Volume);
2509
2510                 ntStatus = AFSVerifyVolume( (ULONGLONG)PsGetCurrentProcessId(),
2511                                             pVolumeCB);
2512
2513                 if( !NT_SUCCESS( ntStatus))
2514                 {
2515
2516                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2517                                   AFS_TRACE_LEVEL_ERROR,
2518                                   "AFSParseName (%08lX) Failed verification of root Status %08lX\n",
2519                                   Irp,
2520                                   ntStatus);
2521
2522                     AFSReleaseResource( pVolumeCB->VolumeLock);
2523
2524                     try_return( ntStatus);
2525                 }
2526             }
2527
2528             AFSConvertToShared( pVolumeCB->VolumeLock);
2529
2530             if( BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_VERIFY))
2531             {
2532
2533                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2534                               AFS_TRACE_LEVEL_VERBOSE,
2535                               "AFSParseName (%08lX) Verifying parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2536                               Irp,
2537                               &pDirEntry->NameInformation.FileName,
2538                               pDirEntry->ObjectInformation->FileId.Cell,
2539                               pDirEntry->ObjectInformation->FileId.Volume,
2540                               pDirEntry->ObjectInformation->FileId.Vnode,
2541                               pDirEntry->ObjectInformation->FileId.Unique);
2542
2543                 ntStatus = AFSVerifyEntry( AuthGroup,
2544                                            pDirEntry);
2545
2546                 if( !NT_SUCCESS( ntStatus))
2547                 {
2548
2549                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2550                                   AFS_TRACE_LEVEL_VERBOSE,
2551                                   "AFSParseName (%08lX) Failed verification of parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2552                                   Irp,
2553                                   &pDirEntry->NameInformation.FileName,
2554                                   pDirEntry->ObjectInformation->FileId.Cell,
2555                                   pDirEntry->ObjectInformation->FileId.Volume,
2556                                   pDirEntry->ObjectInformation->FileId.Vnode,
2557                                   pDirEntry->ObjectInformation->FileId.Unique,
2558                                   ntStatus);
2559
2560                     AFSReleaseResource( pVolumeCB->VolumeLock);
2561
2562                     try_return( ntStatus);
2563                 }
2564             }
2565
2566             //
2567             // Create our full path name buffer
2568             //
2569
2570             uniFullName.MaximumLength = pRelatedCcb->FullFileName.Length +
2571                                                     sizeof( WCHAR) +
2572                                                     pIrpSp->FileObject->FileName.Length +
2573                                                     sizeof( WCHAR);
2574
2575             uniFullName.Length = 0;
2576
2577             uniFullName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2578                                                                     uniFullName.MaximumLength,
2579                                                                     AFS_NAME_BUFFER_THREE_TAG);
2580
2581             if( uniFullName.Buffer == NULL)
2582             {
2583
2584                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2585                               AFS_TRACE_LEVEL_ERROR,
2586                               "AFSParseName (%08lX) Failed to allocate full name buffer\n",
2587                               Irp);
2588
2589                 AFSReleaseResource( pVolumeCB->VolumeLock);
2590
2591                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2592             }
2593
2594             RtlZeroMemory( uniFullName.Buffer,
2595                            uniFullName.MaximumLength);
2596
2597             RtlCopyMemory( uniFullName.Buffer,
2598                            pRelatedCcb->FullFileName.Buffer,
2599                            pRelatedCcb->FullFileName.Length);
2600
2601             uniFullName.Length = pRelatedCcb->FullFileName.Length;
2602
2603             usComponentIndex = (USHORT)(uniFullName.Length/sizeof( WCHAR));
2604
2605             usComponentLength = pIrpSp->FileObject->FileName.Length;
2606
2607             if( uniFullName.Buffer[ (uniFullName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
2608                 pIrpSp->FileObject->FileName.Length > 0 &&
2609                 pIrpSp->FileObject->FileName.Buffer[ 0] != L'\\' &&
2610                 pIrpSp->FileObject->FileName.Buffer[ 0] != L':')
2611             {
2612
2613                 uniFullName.Buffer[ (uniFullName.Length/sizeof( WCHAR))] = L'\\';
2614
2615                 uniFullName.Length += sizeof( WCHAR);
2616
2617                 usComponentLength += sizeof( WCHAR);
2618             }
2619
2620             if( pIrpSp->FileObject->FileName.Length > 0)
2621             {
2622
2623                 RtlCopyMemory( &uniFullName.Buffer[ uniFullName.Length/sizeof( WCHAR)],
2624                                pIrpSp->FileObject->FileName.Buffer,
2625                                pIr\epSp->FileObject->FileName.Length);
2626
2627                 uniFullName.Length += pIrpSp->FileObject->FileName.Length;
2628             }
2629
2630             *RootFileName = uniFullName;
2631
2632             //
2633             // We populate up to the current parent
2634             //
2635
2636             if( pRelatedNameArray == NULL)
2637             {
2638
2639                 //
2640                 // Init and populate our name array
2641                 //
2642
2643                 pNameArray = AFSInitNameArray( NULL,
2644                                                0);
2645
2646                 if( pNameArray == NULL)
2647                 {
2648
2649                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2650                                   AFS_TRACE_LEVEL_VERBOSE,
2651                                   "AFSParseName (%08lX) Failed to initialize name array\n",
2652                                   Irp);
2653
2654                     AFSExFreePool( uniFullName.Buffer);
2655
2656                     AFSReleaseResource( pVolumeCB->VolumeLock);
2657
2658                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2659                 }
2660
2661                 ntStatus = AFSPopulateNameArray( pNameArray,
2662                                                  NULL,
2663                                                  pRelatedCcb->DirectoryCB);
2664             }
2665             else
2666             {
2667
2668                 //
2669                 // Init and populate our name array
2670                 //
2671
2672                 pNameArray = AFSInitNameArray( NULL,
2673                                                pRelatedNameArray->MaxElementCount);
2674
2675                 if( pNameArray == NULL)
2676                 {
2677
2678                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2679                                   AFS_TRACE_LEVEL_VERBOSE,
2680                                   "AFSParseName (%08lX) Failed to initialize name array\n",
2681                                   Irp);
2682
2683                     AFSExFreePool( uniFullName.Buffer);
2684
2685                     AFSReleaseResource( pVolumeCB->VolumeLock);
2686
2687                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2688                 }
2689
2690                 ntStatus = AFSPopulateNameArrayFromRelatedArray( pNameArray,
2691                                                                  pRelatedNameArray,
2692                                                                  pRelatedCcb->DirectoryCB);
2693             }
2694
2695             if( !NT_SUCCESS( ntStatus))
2696             {
2697
2698                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2699                               AFS_TRACE_LEVEL_VERBOSE,
2700                               "AFSParseName (%08lX) Failed to populate name array\n",
2701                               Irp);
2702
2703                 AFSExFreePool( uniFullName.Buffer);
2704
2705                 AFSReleaseResource( pVolumeCB->VolumeLock);
2706
2707                 try_return( ntStatus);
2708             }
2709
2710             ParsedFileName->Length = usComponentLength;
2711             ParsedFileName->MaximumLength = uniFullName.MaximumLength;
2712
2713             ParsedFileName->Buffer = &uniFullName.Buffer[ usComponentIndex];
2714
2715             //
2716             // Indicate to caller that RootFileName must be freed
2717             //
2718
2719             SetFlag( *ParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER);
2720
2721             *NameArray = pNameArray;
2722
2723             *VolumeCB = pVolumeCB;
2724
2725             //
2726             // Increment our volume reference count
2727             //
2728
2729             InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
2730
2731             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2732                           AFS_TRACE_LEVEL_VERBOSE,
2733                           "AFSParseName Increment count on volume %08lX Cnt %d\n",
2734                           pVolumeCB,
2735                           pVolumeCB->VolumeReferenceCount);
2736
2737             *ParentDirectoryCB = pDirEntry;
2738
2739             InterlockedIncrement( &pDirEntry->OpenReferenceCount);
2740
2741             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
2742                           AFS_TRACE_LEVEL_VERBOSE,
2743                           "AFSParseName Increment1 count on %wZ DE %p Ccb %p Cnt %d\n",
2744                           &pDirEntry->NameInformation.FileName,
2745                           pDirEntry,
2746                           NULL,
2747                           pDirEntry->OpenReferenceCount);
2748
2749             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2750                           AFS_TRACE_LEVEL_VERBOSE_2,
2751                           "AFSParseName (%08lX) Returning full name %wZ\n",
2752                           Irp,
2753                           &uniFullName);
2754
2755             try_return( ntStatus);
2756         }
2757
2758         //
2759         // No wild cards in the name
2760         //
2761
2762         uniFullName = pIrpSp->FileObject->FileName;
2763
2764         if( FsRtlDoesNameContainWildCards( &uniFullName) ||
2765             uniFullName.Length < AFSServerName.Length)
2766         {
2767
2768             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2769                           AFS_TRACE_LEVEL_ERROR,
2770                           "AFSParseName (%08lX) Name %wZ contains wild cards or too short\n",
2771                           Irp,
2772                           &uniFullName);
2773
2774             try_return( ntStatus = STATUS_OBJECT_NAME_INVALID);
2775         }
2776
2777         //
2778         // The name is a fully qualified name. Parse out the server/share names and
2779         // point to the root qualified name
2780         // First thing is to locate the server name
2781         //
2782
2783         FsRtlDissectName( uniFullName,
2784                           &uniComponentName,
2785                           &uniRemainingPath);
2786
2787         uniFullName = uniRemainingPath;
2788
2789         //
2790         // This component is the server name we are serving
2791         //
2792
2793         if( RtlCompareUnicodeString( &uniComponentName,
2794                                      &AFSServerName,
2795                                      TRUE) != 0)
2796         {
2797
2798             //
2799             // Drive letter based name?
2800             //
2801
2802             uniFullName = pIrpSp->FileObject->FileName;
2803
2804             while( usIndex < uniFullName.Length/sizeof( WCHAR))
2805             {
2806
2807                 if( uniFullName.Buffer[ usIndex] == L':')
2808                 {
2809
2810                     uniFullName.Buffer = &uniFullName.Buffer[ usIndex + 2];
2811
2812                     uniFullName.Length -= (usIndex + 2) * sizeof( WCHAR);
2813
2814                     usDriveIndex = usIndex - 1;
2815
2816                     break;
2817                 }
2818
2819                 usIndex++;
2820             }
2821
2822             //
2823             // Do we have the right server name now?
2824             //
2825
2826             FsRtlDissectName( uniFullName,
2827                               &uniComponentName,
2828                               &uniRemainingPath);
2829
2830             uniFullName = uniRemainingPath;
2831
2832             //
2833             // This component is the server name we are serving
2834             //
2835
2836             if( RtlCompareUnicodeString( &uniComponentName,
2837                                          &AFSServerName,
2838                                          TRUE) != 0)
2839             {
2840
2841                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2842                               AFS_TRACE_LEVEL_ERROR,
2843                               "AFSParseName (%08lX) Name %wZ does not have server name\n",
2844                               Irp,
2845                               &pIrpSp->FileObject->FileName);
2846
2847                 try_return( ntStatus = STATUS_BAD_NETWORK_NAME);
2848             }
2849
2850             //
2851             // Validate this drive letter is actively mapped
2852             //
2853
2854             if( usDriveIndex > 0 &&
2855                 !AFSIsDriveMapped( pIrpSp->FileObject->FileName.Buffer[ usDriveIndex]))
2856             {
2857
2858                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2859                               AFS_TRACE_LEVEL_ERROR,
2860                               "AFSParseName (%08lX) Name %wZ contains invalid drive mapping\n",
2861                               Irp,
2862                               &pIrpSp->FileObject->FileName);
2863
2864                 try_return( ntStatus = STATUS_BAD_NETWORK_NAME);
2865             }
2866         }
2867
2868         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2869                       AFS_TRACE_LEVEL_VERBOSE_2,
2870                       "AFSParseName (%08lX) Processing full name %wZ\n",
2871                       Irp,
2872                       &uniFullName);
2873
2874         if( uniFullName.Length > 0 &&
2875             uniFullName.Buffer[ (uniFullName.Length/sizeof( WCHAR)) - 1] == L'\\')
2876         {
2877
2878             uniFullName.Length -= sizeof( WCHAR);
2879         }
2880
2881         //
2882         // Be sure we are online and ready to go
2883         //
2884
2885         AFSAcquireExcl( AFSGlobalRoot->VolumeLock,
2886                         TRUE);
2887
2888         if( BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
2889             BooleanFlagOn( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE))
2890         {
2891
2892             //
2893             // The volume has been taken off line so fail the access
2894             //
2895
2896             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2897                           AFS_TRACE_LEVEL_ERROR,
2898                           "AFSParseName (%08lX) Volume %08lX:%08lX OFFLINE/INVALID\n",
2899                           Irp,
2900                           AFSGlobalRoot->ObjectInformation.FileId.Cell,
2901                           AFSGlobalRoot->ObjectInformation.FileId.Volume);
2902
2903             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
2904
2905             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
2906         }
2907
2908         if( BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_VERIFY))
2909         {
2910
2911             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2912                           AFS_TRACE_LEVEL_VERBOSE,
2913                           "AFSParseName (%08lX) Verifying root of volume %08lX:%08lX\n",
2914                           Irp,
2915                           AFSGlobalRoot->ObjectInformation.FileId.Cell,
2916                           AFSGlobalRoot->ObjectInformation.FileId.Volume);
2917
2918             ntStatus = AFSVerifyVolume( (ULONGLONG)PsGetCurrentProcessId(),
2919                                         AFSGlobalRoot);
2920
2921             if( !NT_SUCCESS( ntStatus))
2922             {
2923
2924                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2925                               AFS_TRACE_LEVEL_ERROR,
2926                               "AFSParseName (%08lX) Failed verification of root Status %08lX\n",
2927                               Irp,
2928                               ntStatus);
2929
2930                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
2931
2932                 try_return( ntStatus);
2933             }
2934         }
2935
2936         if( !BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
2937         {
2938
2939             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2940                           AFS_TRACE_LEVEL_VERBOSE,
2941                           "AFSParseName (%08lX) Enumerating global root of volume %08lX:%08lX\n",
2942                           Irp,
2943                           AFSGlobalRoot->ObjectInformation.FileId.Cell,
2944                           AFSGlobalRoot->ObjectInformation.FileId.Volume);
2945
2946             ntStatus = AFSEnumerateGlobalRoot( AuthGroup);
2947
2948             if( !NT_SUCCESS( ntStatus))
2949             {
2950
2951                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2952                               AFS_TRACE_LEVEL_ERROR,
2953                               "AFSParseName (%08lX) Failed enumeraiton of root Status %08lX\n",
2954                               Irp,
2955                               ntStatus);
2956
2957                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
2958
2959                 try_return( ntStatus);
2960             }
2961         }
2962
2963         //
2964         // Check for the \\Server access and return it as though it where \\Server\Globalroot
2965         //
2966
2967         if( uniRemainingPath.Buffer == NULL ||
2968             ( uniRemainingPath.Length == sizeof( WCHAR) &&
2969               uniRemainingPath.Buffer[ 0] == L'\\'))
2970         {
2971
2972             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2973                           AFS_TRACE_LEVEL_VERBOSE_2,
2974                           "AFSParseName (%08lX) Returning global root access\n",
2975                           Irp);
2976
2977             InterlockedIncrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
2978
2979             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
2980                           AFS_TRACE_LEVEL_VERBOSE,
2981                           "AFSParseName Increment2 count on %wZ DE %p Ccb %p Cnt %d\n",
2982                           &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
2983                           AFSGlobalRoot->DirectoryCB,
2984                           NULL,
2985                           AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
2986
2987             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
2988
2989             *VolumeCB = NULL;
2990
2991             FileName->Length = 0;
2992             FileName->MaximumLength = 0;
2993             FileName->Buffer = NULL;
2994
2995             try_return( ntStatus = STATUS_SUCCESS);
2996         }
2997
2998         *RootFileName = uniFullName;
2999
3000         //
3001         // Include the starting \ in the root name
3002         //
3003
3004         if( RootFileName->Buffer[ 0] != L'\\')
3005         {
3006             RootFileName->Buffer--;
3007             RootFileName->Length += sizeof( WCHAR);
3008             RootFileName->MaximumLength += sizeof( WCHAR);
3009         }
3010
3011         //
3012         // Get the 'share' name
3013         //
3014
3015         FsRtlDissectName( uniFullName,
3016                           &uniComponentName,
3017                           &uniRemainingPath);
3018
3019         //
3020         // If this is the ALL access then perform some additional processing
3021         //
3022
3023         if( RtlCompareUnicodeString( &uniComponentName,
3024                                      &AFSGlobalRootName,
3025                                      TRUE) == 0)
3026         {
3027
3028             bIsAllShare = TRUE;
3029
3030             //
3031             // If there is nothing else then get out
3032             //
3033
3034             if( uniRemainingPath.Buffer == NULL ||
3035                 uniRemainingPath.Length == 0 ||
3036                 ( uniRemainingPath.Length == sizeof( WCHAR) &&
3037                   uniRemainingPath.Buffer[ 0] == L'\\'))
3038             {
3039
3040                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3041                               AFS_TRACE_LEVEL_VERBOSE_2,
3042                               "AFSParseName (%08lX) Returning global root access\n",
3043                               Irp);
3044
3045                 InterlockedIncrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3046
3047                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3048                               AFS_TRACE_LEVEL_VERBOSE,
3049                               "AFSParseName Increment3 count on %wZ DE %p Ccb %p Cnt %d\n",
3050                               &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
3051                               AFSGlobalRoot->DirectoryCB,
3052                               NULL,
3053                               AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3054
3055                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3056
3057                 *VolumeCB = NULL;
3058
3059                 FileName->Length = 0;
3060                 FileName->MaximumLength = 0;
3061                 FileName->Buffer = NULL;
3062
3063                 try_return( ntStatus = STATUS_SUCCESS);
3064             }
3065
3066             //
3067             // Process the name again to strip off the ALL portion
3068             //
3069
3070             uniFullName = uniRemainingPath;
3071
3072             FsRtlDissectName( uniFullName,
3073                               &uniComponentName,
3074                               &uniRemainingPath);
3075
3076             //
3077             // Check for the PIOCtl name
3078             //
3079
3080             if( RtlCompareUnicodeString( &uniComponentName,
3081                                          &AFSPIOCtlName,
3082                                          TRUE) == 0)
3083             {
3084
3085                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3086                               AFS_TRACE_LEVEL_VERBOSE_2,
3087                               "AFSParseName (%08lX) Returning root PIOCtl access\n",
3088                               Irp);
3089
3090                 InterlockedIncrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3091
3092                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3093                               AFS_TRACE_LEVEL_VERBOSE,
3094                               "AFSParseName Increment4 count on %wZ DE %p Ccb %p Cnt %d\n",
3095                               &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
3096                               AFSGlobalRoot->DirectoryCB,
3097                               NULL,
3098                               AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3099
3100                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3101
3102                 ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3103
3104                 *VolumeCB = NULL;
3105
3106                 *FileName = AFSPIOCtlName;
3107
3108                 try_return( ntStatus = STATUS_SUCCESS);
3109             }
3110         }
3111         else if( (pDirEntry = AFSGetSpecialShareNameEntry( &uniComponentName,
3112                                                            &uniRemainingPath)) != NULL)
3113         {
3114
3115             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3116                           AFS_TRACE_LEVEL_VERBOSE_2,
3117                           "AFSParseName (%08lX) Returning root share name %wZ access\n",
3118                           Irp,
3119                           &uniComponentName);
3120
3121             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3122
3123             //
3124             // Add in the full share name to pass back
3125             //
3126
3127             if( uniRemainingPath.Buffer != NULL)
3128             {
3129
3130                 //
3131                 // This routine strips off the leading slash so add it back in
3132                 //
3133
3134                 uniRemainingPath.Buffer--;
3135                 uniRemainingPath.Length += sizeof( WCHAR);
3136                 uniRemainingPath.MaximumLength += sizeof( WCHAR);
3137
3138                 //
3139                 // And the cell name
3140                 //
3141
3142                 uniRemainingPath.Buffer -= (uniComponentName.Length/sizeof( WCHAR));
3143                 uniRemainingPath.Length += uniComponentName.Length;
3144                 uniRemainingPath.MaximumLength += uniComponentName.Length;
3145
3146                 uniComponentName = uniRemainingPath;
3147             }
3148
3149             *VolumeCB = NULL;
3150
3151             *FileName = uniComponentName;
3152
3153             *ParentDirectoryCB = pDirEntry;
3154
3155             ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3156
3157             InterlockedIncrement( &pDirEntry->OpenReferenceCount);
3158
3159             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3160                           AFS_TRACE_LEVEL_VERBOSE,
3161                           "AFSParseName Increment5 count on %wZ DE %p Ccb %p Cnt %d\n",
3162                           &pDirEntry->NameInformation.FileName,
3163                           pDirEntry,
3164                           NULL,
3165                           pDirEntry->OpenReferenceCount);
3166
3167             try_return( ntStatus = STATUS_SUCCESS);
3168         }
3169
3170         //
3171         // Determine the 'share' we are accessing
3172         //
3173
3174         ulCRC = AFSGenerateCRC( &uniComponentName,
3175                                 FALSE);
3176
3177         AFSAcquireShared( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
3178                           TRUE);
3179
3180         bReleaseTreeLock = TRUE;
3181
3182         AFSLocateCaseSensitiveDirEntry( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
3183                                         ulCRC,
3184                                         &pDirEntry);
3185
3186         if( pDirEntry == NULL)
3187         {
3188
3189             ulCRC = AFSGenerateCRC( &uniComponentName,
3190                                     TRUE);
3191
3192             AFSLocateCaseInsensitiveDirEntry( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
3193                                               ulCRC,
3194                                               &pDirEntry);
3195
3196             if( pDirEntry == NULL)
3197             {
3198
3199                 //
3200                 // OK, if this component is a valid short name then try
3201                 // a lookup in the short name tree
3202                 //
3203
3204                 if( RtlIsNameLegalDOS8Dot3( &uniComponentName,
3205                                             NULL,
3206                                             NULL))
3207                 {
3208
3209                     AFSLocateShortNameDirEntry( AFSGlobalRoot->ObjectInformation.Specific.Directory.ShortNameTree,
3210                                                 ulCRC,
3211                                                 &pDirEntry);
3212                 }
3213
3214                 if( pDirEntry == NULL)
3215                 {
3216
3217                     //
3218                     // Check with the service whether it is a valid cell name
3219                     //
3220
3221                     AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
3222
3223                     bReleaseTreeLock = FALSE;
3224
3225                     ntStatus = AFSCheckCellName( AuthGroup,
3226                                                  &uniComponentName,
3227                                                  &pDirEntry);
3228
3229                     if( !NT_SUCCESS( ntStatus))
3230                     {
3231                         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3232
3233                         if ( bIsAllShare &&
3234                              uniRemainingPath.Length == 0 &&
3235                              ntStatus == STATUS_OBJECT_PATH_NOT_FOUND)
3236                         {
3237
3238                             ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
3239                         }
3240
3241                         try_return( ntStatus);
3242                     }
3243                 }
3244             }
3245         }
3246
3247         if( bReleaseTreeLock)
3248         {
3249             AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
3250         }
3251
3252         //
3253         // Be sure we are starting from the correct volume
3254         //
3255
3256         if( pDirEntry->ObjectInformation->VolumeCB != AFSGlobalRoot)
3257         {
3258
3259             //
3260             // We dropped the global root in the CheckCellName routine which is the
3261             // only way we can be here
3262             //
3263
3264             pVolumeCB = pDirEntry->ObjectInformation->VolumeCB;
3265
3266             //
3267             // In this case don't add back in the 'share' name since that is where we are
3268             // starting. Just put the leading slash back in
3269             //
3270
3271             if( uniRemainingPath.Buffer != NULL)
3272             {
3273
3274                 uniRemainingPath.Buffer--;
3275                 uniRemainingPath.Length += sizeof( WCHAR);
3276                 uniRemainingPath.MaximumLength += sizeof( WCHAR);
3277
3278                 if( uniRemainingPath.Length > sizeof( WCHAR))
3279                 {
3280
3281                     ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3282                 }
3283
3284                 //
3285                 // Pass back the parent being the root of the volume
3286                 //
3287
3288                 *ParentDirectoryCB = pVolumeCB->DirectoryCB;
3289             }
3290             else
3291             {
3292
3293                 //
3294                 // Pass back a root slash
3295                 //
3296
3297                 uniRemainingPath = uniComponentName;
3298
3299                 uniRemainingPath.Buffer--;
3300                 uniRemainingPath.Length = sizeof( WCHAR);
3301                 uniRemainingPath.MaximumLength = sizeof( WCHAR);
3302
3303                 //
3304                 // This is a root open so pass back no parent
3305                 //
3306
3307                 *ParentDirectoryCB = NULL;
3308             }
3309         }
3310         else
3311         {
3312
3313             pVolumeCB = AFSGlobalRoot;
3314
3315             //
3316             // Add back in the 'share' portion of the name since we will parse it out on return
3317             //
3318
3319             if( uniRemainingPath.Buffer != NULL)
3320             {
3321
3322                 //
3323                 // This routine strips off the leading slash so add it back in
3324                 //
3325
3326                 uniRemainingPath.Buffer--;
3327                 uniRemainingPath.Length += sizeof( WCHAR);
3328                 uniRemainingPath.MaximumLength += sizeof( WCHAR);
3329
3330                 if( uniRemainingPath.Length > sizeof( WCHAR))
3331                 {
3332
3333                     ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3334                 }
3335
3336                 //
3337                 // And the cell name
3338                 //
3339
3340                 uniRemainingPath.Buffer -= (uniComponentName.Length/sizeof( WCHAR));
3341                 uniRemainingPath.Length += uniComponentName.Length;
3342                 uniRemainingPath.MaximumLength += uniComponentName.Length;
3343             }
3344             else
3345             {
3346
3347                 uniRemainingPath = uniComponentName;
3348             }
3349
3350             //
3351             // And the leading slash again ...
3352             //
3353
3354             uniRemainingPath.Buffer--;
3355             uniRemainingPath.Length += sizeof( WCHAR);
3356             uniRemainingPath.MaximumLength += sizeof( WCHAR);
3357
3358             InterlockedIncrement( &pVolumeCB->DirectoryCB->OpenReferenceCount);
3359
3360             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3361                           AFS_TRACE_LEVEL_VERBOSE,
3362                           "AFSParseName Increment6 count on %wZ DE %p Ccb %p Cnt %d\n",
3363                           &pVolumeCB->DirectoryCB->NameInformation.FileName,
3364                           pVolumeCB->DirectoryCB,
3365                           NULL,
3366                           pVolumeCB->DirectoryCB->OpenReferenceCount);
3367
3368             //
3369             // Pass back the parent being the volume root
3370             //
3371
3372             *ParentDirectoryCB = pVolumeCB->DirectoryCB;
3373         }
3374
3375         //
3376         // We only need the volume shared at this point
3377         //
3378
3379         AFSConvertToShared( pVolumeCB->VolumeLock);
3380
3381         //
3382         // Init our name array
3383         //
3384
3385         pNameArray = AFSInitNameArray( pVolumeCB->DirectoryCB,
3386                                        0);
3387
3388         if( pNameArray == NULL)
3389         {
3390
3391             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3392                           AFS_TRACE_LEVEL_VERBOSE,
3393                           "AFSParseName (%08lX) Failed to initialize name array\n",
3394                           Irp);
3395
3396             AFSReleaseResource( pVolumeCB->VolumeLock);
3397
3398             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
3399         }
3400
3401         //
3402         // Return the remaining portion as the file name
3403         //
3404
3405         *FileName = uniRemainingPath;
3406
3407         *ParsedFileName = uniRemainingPath;
3408
3409         *NameArray = pNameArray;
3410
3411         *VolumeCB = pVolumeCB;
3412
3413         //
3414         // Increment our reference on the volume
3415         //
3416
3417         InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
3418
3419         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
3420                       AFS_TRACE_LEVEL_VERBOSE,
3421                       "AFSParseName Increment2 count on global volume %08lX Cnt %d\n",
3422                       pVolumeCB,
3423                       pVolumeCB->VolumeReferenceCount);
3424
3425 try_exit:
3426
3427         if( NT_SUCCESS( ntStatus))
3428         {
3429
3430             if( *ParentDirectoryCB != NULL)
3431             {
3432
3433                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3434                               AFS_TRACE_LEVEL_VERBOSE,
3435                               "AFSParseName Count on %wZ DE %p Ccb %p Cnt %d\n",
3436                               &(*ParentDirectoryCB)->NameInformation.FileName,
3437                               *ParentDirectoryCB,
3438                               NULL,
3439                               (*ParentDirectoryCB)->OpenReferenceCount);
3440             }
3441         }
3442
3443         if( *VolumeCB != NULL)
3444         {
3445
3446             ASSERT( (*VolumeCB)->VolumeReferenceCount > 1);
3447         }
3448
3449         if( ntStatus != STATUS_SUCCESS)
3450         {
3451
3452             if( pNameArray != NULL)
3453             {
3454
3455                 AFSFreeNameArray( pNameArray);
3456             }
3457         }
3458     }
3459
3460     return ntStatus;
3461 }
3462
3463 NTSTATUS
3464 AFSCheckCellName( IN GUID *AuthGroup,
3465                   IN UNICODE_STRING *CellName,
3466                   OUT AFSDirectoryCB **ShareDirEntry)
3467 {
3468
3469     NTSTATUS ntStatus = STATUS_SUCCESS;
3470     UNICODE_STRING uniName;
3471     AFSFileID stFileID;
3472     AFSDirEnumEntry *pDirEnumEntry = NULL;
3473     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
3474     AFSDirHdr *pDirHdr = &AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr;
3475     AFSDirectoryCB *pDirNode = NULL;
3476     UNICODE_STRING uniDirName, uniTargetName;
3477     AFSVolumeCB *pVolumeCB = NULL;
3478
3479     __Enter
3480     {
3481
3482         //
3483         // Look for some default names we will not handle
3484         //
3485
3486         RtlInitUnicodeString( &uniName,
3487                               L"IPC$");
3488
3489         if( RtlCompareUnicodeString( &uniName,
3490                                      CellName,
3491                                      TRUE) == 0)
3492         {
3493
3494             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3495         }
3496
3497         RtlInitUnicodeString( &uniName,
3498                               L"wkssvc");
3499
3500         if( RtlCompareUnicodeString( &uniName,
3501                                      CellName,
3502                                      TRUE) == 0)
3503         {
3504
3505             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3506         }
3507
3508         RtlInitUnicodeString( &uniName,
3509                               L"srvsvc");
3510
3511         if( RtlCompareUnicodeString( &uniName,
3512                                      CellName,
3513                                      TRUE) == 0)
3514         {
3515
3516             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3517         }
3518
3519         RtlInitUnicodeString( &uniName,
3520                               L"PIPE");
3521
3522         if( RtlCompareUnicodeString( &uniName,
3523                                      CellName,
3524                                      TRUE) == 0)
3525         {
3526
3527             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3528         }
3529
3530         //
3531         // OK, ask the CM about this component name
3532         //
3533
3534         stFileID = AFSGlobalRoot->ObjectInformation.FileId;
3535
3536         ntStatus = AFSEvaluateTargetByName( AuthGroup,
3537                                             &stFileID,
3538                                             CellName,
3539                                             &pDirEnumEntry);
3540
3541         if( !NT_SUCCESS( ntStatus))
3542         {
3543
3544             try_return( ntStatus);
3545         }
3546
3547         //
3548         // OK, we have a dir enum entry back so add it to the root node
3549         //
3550
3551         uniDirName = *CellName;
3552
3553         uniTargetName.Length = (USHORT)pDirEnumEntry->TargetNameLength;
3554         uniTargetName.MaximumLength = uniTargetName.Length;
3555         uniTargetName.Buffer = (WCHAR *)((char *)pDirEnumEntry + pDirEnumEntry->TargetNameOffset);
3556
3557         //
3558         // Is this entry a root volume entry?
3559         //
3560
3561         if( pDirEnumEntry->FileId.Cell != AFSGlobalRoot->ObjectInformation.FileId.Cell ||
3562             pDirEnumEntry->FileId.Volume != AFSGlobalRoot->ObjectInformation.FileId.Volume)
3563         {
3564
3565             //
3566             // We have the global root on entry so drop it now
3567             //
3568
3569             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3570
3571             //
3572             // Build the root volume entry
3573             //
3574
3575             ntStatus = AFSBuildRootVolume( AuthGroup,
3576                                            &pDirEnumEntry->FileId,
3577                                            &pVolumeCB);
3578
3579             if( !NT_SUCCESS( ntStatus))
3580             {
3581
3582                 //
3583                 // On failure this routine is expecting to hold the global root
3584                 //
3585
3586                 AFSAcquireShared( AFSGlobalRoot->VolumeLock,
3587                                   TRUE);
3588
3589                 try_return( ntStatus);
3590             }
3591
3592             *ShareDirEntry = pVolumeCB->DirectoryCB;
3593
3594             InterlockedIncrement( &pVolumeCB->DirectoryCB->OpenReferenceCount);
3595
3596             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3597                           AFS_TRACE_LEVEL_VERBOSE,
3598                           "AFSCheckCellName Increment1 count on %wZ DE %p Ccb %p Cnt %d\n",
3599                           &pVolumeCB->DirectoryCB->NameInformation.FileName,
3600                           pVolumeCB->DirectoryCB,
3601                           NULL,
3602                           pVolumeCB->DirectoryCB->OpenReferenceCount);
3603
3604             InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
3605         }
3606         else
3607         {
3608
3609             pDirNode = AFSInitDirEntry( &AFSGlobalRoot->ObjectInformation,
3610                                         &uniDirName,
3611                                         &uniTargetName,
3612                                         pDirEnumEntry,
3613                                         (ULONG)InterlockedIncrement( &pDirHdr->ContentIndex));
3614
3615             if( pDirNode == NULL)
3616             {
3617
3618                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
3619             }
3620
3621             //
3622             // Init the short name if we have one
3623             //
3624
3625             if( pDirEnumEntry->ShortNameLength > 0)
3626             {
3627
3628                 pDirNode->NameInformation.ShortNameLength = pDirEnumEntry->ShortNameLength;
3629
3630                 RtlCopyMemory( pDirNode->NameInformation.ShortName,
3631                                pDirEnumEntry->ShortName,
3632                                pDirNode->NameInformation.ShortNameLength);
3633             }
3634
3635             AFSAcquireExcl( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
3636                             TRUE);
3637
3638             //
3639             // Insert the node into the name tree
3640             //
3641
3642             ASSERT( ExIsResourceAcquiredExclusiveLite( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock));
3643
3644             if( pDirHdr->CaseSensitiveTreeHead == NULL)
3645             {
3646
3647                 pDirHdr->CaseSensitiveTreeHead = pDirNode;
3648             }
3649             else
3650             {
3651
3652                 AFSInsertCaseSensitiveDirEntry( pDirHdr->CaseSensitiveTreeHead,
3653                                                 pDirNode);
3654             }
3655
3656             if( pDirHdr->CaseInsensitiveTreeHead == NULL)
3657             {
3658
3659                 pDirHdr->CaseInsensitiveTreeHead = pDirNode;
3660
3661                 SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
3662             }
3663             else
3664             {
3665
3666                 AFSInsertCaseInsensitiveDirEntry( pDirHdr->CaseInsensitiveTreeHead,
3667                                                   pDirNode);
3668             }
3669
3670             if( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListHead == NULL)
3671             {
3672
3673                 AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListHead = pDirNode;
3674             }
3675             else
3676             {
3677
3678                 AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListTail->ListEntry.fLink = pDirNode;
3679
3680                 pDirNode->ListEntry.bLink = AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListTail;
3681             }
3682
3683             AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListTail = pDirNode;
3684
3685             SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST);
3686
3687             InterlockedIncrement( &AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeCount);
3688
3689             AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
3690                           AFS_TRACE_LEVEL_VERBOSE,
3691                           "AFSCheckCellName Adding entry %wZ Inc Count %d to parent FID %08lX-%08lX-%08lX-%08lX\n",
3692                               &pDirNode->NameInformation.FileName,
3693                               AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeCount,
3694                               AFSGlobalRoot->ObjectInformation.FileId.Cell,
3695                               AFSGlobalRoot->ObjectInformation.FileId.Volume,
3696                               AFSGlobalRoot->ObjectInformation.FileId.Vnode,
3697                               AFSGlobalRoot->ObjectInformation.FileId.Unique);
3698
3699             InterlockedIncrement( &pDirNode->OpenReferenceCount);
3700
3701             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3702                           AFS_TRACE_LEVEL_VERBOSE,
3703                           "AFSCheckCellName Increment2 count on %wZ DE %p Ccb %p Cnt %d\n",
3704                           &pDirNode->NameInformation.FileName,
3705                           pDirNode,
3706                           NULL,
3707                           pDirNode->OpenReferenceCount);
3708
3709             AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
3710
3711             //
3712             // Pass back the dir node
3713             //
3714
3715             *ShareDirEntry = pDirNode;
3716         }
3717
3718 try_exit:
3719
3720         if( pDirEnumEntry != NULL)
3721         {
3722
3723             AFSExFreePool( pDirEnumEntry);
3724         }
3725     }
3726
3727     return ntStatus;
3728 }
3729
3730 NTSTATUS
3731 AFSBuildMountPointTarget( IN GUID *AuthGroup,
3732                           IN AFSDirectoryCB  *DirectoryCB,
3733                           OUT AFSVolumeCB **TargetVolumeCB)
3734 {
3735
3736     NTSTATUS ntStatus = STATUS_SUCCESS;
3737     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
3738     AFSDirEnumEntry *pDirEntry = NULL;
3739     AFSDirectoryCB *pDirNode = NULL;
3740     UNICODE_STRING uniDirName, uniTargetName;
3741     ULONGLONG       ullIndex = 0;
3742     AFSVolumeCB *pVolumeCB = NULL;
3743     AFSFileID stTargetFileID;
3744
3745     __Enter
3746     {
3747
3748         //
3749         // Loop on each entry, building the chain until we encounter the final target
3750         //
3751
3752         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3753                       AFS_TRACE_LEVEL_VERBOSE_2,
3754                       "AFSBuildMountPointTarget Building target directory for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3755                       &DirectoryCB->NameInformation.FileName,
3756                       DirectoryCB->ObjectInformation->FileId.Cell,
3757                       DirectoryCB->ObjectInformation->FileId.Volume,
3758                       DirectoryCB->ObjectInformation->FileId.Vnode,
3759                       DirectoryCB->ObjectInformation->FileId.Unique);
3760
3761         //
3762         // Do we need to evaluate the node?
3763         //
3764
3765         //if( DirectoryCB->ObjectInformation->TargetFileId.Vnode == 0 &&
3766         //    DirectoryCB->ObjectInformation->TargetFileId.Unique == 0)
3767         {
3768
3769             //
3770             // Go evaluate the current target to get the target fid
3771             //
3772
3773             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3774                           AFS_TRACE_LEVEL_VERBOSE_2,
3775                           "AFSBuildMountPointTarget Evaluating target %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3776                               &DirectoryCB->NameInformation.FileName,
3777                               DirectoryCB->ObjectInformation->FileId.Cell,
3778                               DirectoryCB->ObjectInformation->FileId.Volume,
3779                               DirectoryCB->ObjectInformation->FileId.Vnode,
3780                               DirectoryCB->ObjectInformation->FileId.Unique);
3781
3782             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
3783                                               AuthGroup,
3784                                               FALSE,
3785                                               &pDirEntry);
3786
3787             if( !NT_SUCCESS( ntStatus))
3788             {
3789
3790                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3791                               AFS_TRACE_LEVEL_ERROR,
3792                               "AFSBuildMountPointTarget Failed to evaluate target %wZ Status %08lX\n",
3793                               &DirectoryCB->NameInformation.FileName,
3794                               ntStatus);
3795                 try_return( ntStatus);
3796             }
3797
3798             if( pDirEntry->TargetFileId.Vnode == 0 &&
3799                 pDirEntry->TargetFileId.Unique == 0)
3800             {
3801
3802                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3803                               AFS_TRACE_LEVEL_ERROR,
3804                               "AFSBuildMountPointTarget Target %wZ FID %08lX-%08lX-%08lX-%08lX service returned zero FID\n",
3805                               &DirectoryCB->NameInformation.FileName,
3806                               DirectoryCB->ObjectInformation->FileId.Cell,
3807                               DirectoryCB->ObjectInformation->FileId.Volume,
3808                               DirectoryCB->ObjectInformation->FileId.Vnode,
3809                               DirectoryCB->ObjectInformation->FileId.Unique);
3810
3811                 try_return( ntStatus = STATUS_ACCESS_DENIED);
3812             }
3813
3814             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
3815                             TRUE);
3816
3817             ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
3818                                             &DirectoryCB->Flags,
3819                                             (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
3820                                             (USHORT)pDirEntry->TargetNameLength);
3821
3822             if( !NT_SUCCESS( ntStatus))
3823             {
3824
3825                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
3826
3827                 try_return( ntStatus);
3828             }
3829
3830             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
3831
3832             DirectoryCB->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
3833         }
3834
3835         stTargetFileID = DirectoryCB->ObjectInformation->TargetFileId;
3836
3837         //
3838         // Try to locate this FID. First the volume then the
3839         // entry itself
3840         //
3841
3842         ullIndex = AFSCreateHighIndex( &stTargetFileID);
3843
3844         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3845                       AFS_TRACE_LEVEL_VERBOSE,
3846                       "AFSBuildMountPointTarget Acquiring RDR VolumeTreeLock lock %08lX EXCL %08lX\n",
3847                       &pDevExt->Specific.RDR.VolumeTreeLock,
3848                       PsGetCurrentThread());
3849
3850         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock,
3851                           TRUE);
3852
3853         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3854                       AFS_TRACE_LEVEL_VERBOSE_2,
3855                       "AFSBuildMountPointTarget Locating volume for target %I64X\n",
3856                       ullIndex);
3857
3858         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
3859                                        ullIndex,
3860                                        (AFSBTreeEntry **)&pVolumeCB);
3861
3862         //
3863         // We can be processing a request for a target that is on a volume
3864         // we have never seen before.
3865         //
3866
3867         if( pVolumeCB == NULL)
3868         {
3869
3870             //
3871             // Locking is held correctly in init routine
3872             //
3873
3874             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3875
3876             //
3877             // Go init the root of the volume
3878             //
3879
3880             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3881                           AFS_TRACE_LEVEL_VERBOSE_2,
3882                           "AFSBuildMountPointTarget Initializing root for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3883                           &DirectoryCB->NameInformation.FileName,
3884                           DirectoryCB->ObjectInformation->FileId.Cell,
3885                           DirectoryCB->ObjectInformation->FileId.Volume,
3886                           DirectoryCB->ObjectInformation->FileId.Vnode,
3887                           DirectoryCB->ObjectInformation->FileId.Unique);
3888
3889             ntStatus = AFSInitVolume( AuthGroup,
3890                                       &stTargetFileID,
3891                                       &pVolumeCB);
3892
3893             if( !NT_SUCCESS( ntStatus))
3894             {
3895
3896                 try_return( ntStatus);
3897             }
3898         }
3899         else
3900         {
3901
3902             //
3903             // Check if this volume has been deleted or taken offline
3904             //
3905
3906             if( BooleanFlagOn( pVolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE))
3907             {
3908
3909                 AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3910
3911                 try_return( ntStatus = STATUS_FILE_IS_OFFLINE);
3912             }
3913
3914             //
3915             // Just to ensure that things don't get torn down AND we don't create a
3916             // deadlock with invalidation
3917             //
3918
3919             InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
3920
3921             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3922
3923             AFSAcquireExcl( pVolumeCB->VolumeLock,
3924                             TRUE);
3925
3926             InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
3927         }
3928
3929         if( pVolumeCB->RootFcb == NULL)
3930         {
3931
3932             //
3933             // Initialize the root fcb for this volume
3934             //
3935
3936             ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
3937                                        pVolumeCB);
3938
3939             if( !NT_SUCCESS( ntStatus))
3940             {
3941
3942                 AFSReleaseResource( pVolumeCB->VolumeLock);
3943
3944                 try_return( ntStatus);
3945             }
3946
3947             //
3948             // Drop the lock acquired above
3949             //
3950
3951             AFSReleaseResource( &pVolumeCB->RootFcb->NPFcb->Resource);
3952         }
3953
3954         AFSConvertToShared( pVolumeCB->VolumeLock);
3955
3956         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3957                       AFS_TRACE_LEVEL_VERBOSE_2,
3958                       "AFSBuildMountPointTarget Evaluated target of %wZ FID %08lX-%08lX-%08lX-%08lX as root volume\n",
3959                       &pVolumeCB->DirectoryCB->NameInformation.FileName,
3960                       pVolumeCB->ObjectInformation.FileId.Cell,
3961                       pVolumeCB->ObjectInformation.FileId.Volume,
3962                       pVolumeCB->ObjectInformation.FileId.Vnode,
3963                       pVolumeCB->ObjectInformation.FileId.Unique);
3964
3965         InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
3966
3967         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
3968                       AFS_TRACE_LEVEL_VERBOSE,
3969                       "AFSBuildMountPointTarget Increment count on volume %08lX Cnt %d\n",
3970                       pVolumeCB,
3971                       pVolumeCB->VolumeReferenceCount);
3972
3973         *TargetVolumeCB = pVolumeCB;
3974
3975 try_exit:
3976
3977         if( pDirEntry)
3978         {
3979
3980             AFSExFreePool( pDirEntry);
3981         }
3982     }
3983
3984     return ntStatus;
3985 }
3986
3987 NTSTATUS
3988 AFSBuildRootVolume( IN GUID *AuthGroup,
3989                     IN AFSFileID *FileId,
3990                     OUT AFSVolumeCB **TargetVolumeCB)
3991 {
3992
3993     NTSTATUS ntStatus = STATUS_SUCCESS;
3994     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
3995     AFSDirectoryCB *pDirNode = NULL;
3996     UNICODE_STRING uniDirName, uniTargetName;
3997     ULONGLONG       ullIndex = 0;
3998     AFSVolumeCB *pVolumeCB = NULL;
3999
4000     __Enter
4001     {
4002
4003         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4004                       AFS_TRACE_LEVEL_VERBOSE_2,
4005                       "AFSBuildRootVolume Building target volume for FID %08lX-%08lX-%08lX-%08lX\n",
4006                       FileId->Cell,
4007                       FileId->Volume,
4008                       FileId->Vnode,
4009                       FileId->Unique);
4010
4011         ullIndex = AFSCreateHighIndex( FileId);
4012
4013         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
4014                       AFS_TRACE_LEVEL_VERBOSE,
4015                       "AFSBuildRootVolume Acquiring RDR VolumeTreeLock lock %08lX EXCL %08lX\n",
4016                       &pDevExt->Specific.RDR.VolumeTreeLock,
4017                       PsGetCurrentThread());
4018
4019         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock,
4020                           TRUE);
4021
4022         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4023                       AFS_TRACE_LEVEL_VERBOSE_2,
4024                       "AFSBuildRootVolume Locating volume for target %I64X\n",
4025                       ullIndex);
4026
4027         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
4028                                        ullIndex,
4029                                        (AFSBTreeEntry **)&pVolumeCB);
4030
4031         //
4032         // We can be processing a request for a target that is on a volume
4033         // we have never seen before.
4034         //
4035
4036         if( pVolumeCB == NULL)
4037         {
4038
4039             //
4040             // Locking is held correctly in init routine
4041             //
4042
4043             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
4044
4045             //
4046             // Go init the root of the volume
4047             //
4048
4049             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4050                           AFS_TRACE_LEVEL_VERBOSE_2,
4051                           "AFSBuildRootVolume Initializing root for FID %08lX-%08lX-%08lX-%08lX\n",
4052                           FileId->Cell,
4053                           FileId->Volume,
4054                           FileId->Vnode,
4055                           FileId->Unique);
4056
4057             ntStatus = AFSInitVolume( AuthGroup,
4058                                       FileId,
4059                                       &pVolumeCB);
4060
4061             if( !NT_SUCCESS( ntStatus))
4062             {
4063
4064                 try_return( ntStatus);
4065             }
4066         }
4067         else
4068         {
4069
4070             //
4071             // Just to ensure that things don't get torn down AND we don't create a
4072             // deadlock with invalidation
4073             //
4074
4075             InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
4076
4077             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
4078
4079             AFSAcquireExcl( pVolumeCB->VolumeLock,
4080                             TRUE);
4081
4082             InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
4083         }
4084
4085
4086         if( pVolumeCB->RootFcb == NULL)
4087         {
4088
4089             //
4090             // Initialize the root fcb for this volume
4091             //
4092
4093             ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
4094                                        pVolumeCB);
4095
4096             if( !NT_SUCCESS( ntStatus))
4097             {
4098
4099                 AFSReleaseResource( pVolumeCB->VolumeLock);
4100
4101                 try_return( ntStatus);
4102             }
4103
4104             //
4105             // Drop the lock acquired above
4106             //
4107
4108             AFSReleaseResource( &pVolumeCB->RootFcb->NPFcb->Resource);
4109         }
4110
4111         AFSConvertToShared( pVolumeCB->VolumeLock);
4112
4113         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4114                       AFS_TRACE_LEVEL_VERBOSE_2,
4115                       "AFSBuildRootVolume Evaluated target of %wZ FID %08lX-%08lX-%08lX-%08lX as root volume\n",
4116                       &pVolumeCB->DirectoryCB->NameInformation.FileName,
4117                       pVolumeCB->ObjectInformation.FileId.Cell,
4118                       pVolumeCB->ObjectInformation.FileId.Volume,
4119                       pVolumeCB->ObjectInformation.FileId.Vnode,
4120                       pVolumeCB->ObjectInformation.FileId.Unique);
4121
4122         InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
4123
4124         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
4125                       AFS_TRACE_LEVEL_VERBOSE,
4126                       "AFSBuildRootVolume Increment count on volume %08lX Cnt %d\n",
4127                       pVolumeCB,
4128                       pVolumeCB->VolumeReferenceCount);
4129
4130         *TargetVolumeCB = pVolumeCB;
4131
4132 try_exit:
4133
4134         NOTHING;
4135     }
4136
4137     return ntStatus;
4138 }
4139
4140 NTSTATUS
4141 AFSProcessDFSLink( IN AFSDirectoryCB *DirEntry,
4142                    IN PFILE_OBJECT FileObject,
4143                    IN UNICODE_STRING *RemainingPath)
4144 {
4145
4146     NTSTATUS ntStatus = STATUS_INVALID_DEVICE_REQUEST;
4147     UNICODE_STRING uniReparseName;
4148     UNICODE_STRING uniMUPDeviceName;
4149     AFSDirEnumEntry *pDirEntry = NULL;
4150     GUID *pAuthGroup = NULL;
4151
4152     __Enter
4153     {
4154
4155         //
4156         // Build up the name to reparse
4157         //
4158
4159         RtlInitUnicodeString( &uniMUPDeviceName,
4160                               L"\\Device\\MUP");
4161
4162         uniReparseName.Length = 0;
4163         uniReparseName.Buffer = NULL;
4164
4165         //
4166         // Be sure we have a target name
4167         //
4168
4169         if( DirEntry->NameInformation.TargetName.Length == 0)
4170         {
4171
4172             if( DirEntry->ObjectInformation->Fcb != NULL)
4173             {
4174                 pAuthGroup = &DirEntry->ObjectInformation->Fcb->AuthGroup;
4175             }
4176
4177             ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
4178                                               pAuthGroup,
4179                                               FALSE,
4180                                               &pDirEntry);
4181
4182             if( !NT_SUCCESS( ntStatus) ||
4183                 pDirEntry->TargetNameLength == 0)
4184             {
4185
4186                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4187                               AFS_TRACE_LEVEL_ERROR,
4188                               "AFSProcessDFSLink EvaluateTargetByID failed for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4189                               &DirEntry->NameInformation.FileName,
4190                               DirEntry->ObjectInformation->FileId.Cell,
4191                               DirEntry->ObjectInformation->FileId.Volume,
4192                               DirEntry->ObjectInformation->FileId.Vnode,
4193                               DirEntry->ObjectInformation->FileId.Unique,
4194                               ntStatus);
4195
4196                 if( NT_SUCCESS( ntStatus))
4197                 {
4198
4199                     ntStatus = STATUS_ACCESS_DENIED;
4200                 }
4201
4202                 try_return( ntStatus);
4203             }
4204
4205             //
4206             // Update the target name
4207             //
4208
4209             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
4210                             TRUE);
4211
4212             ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
4213                                             &DirEntry->Flags,
4214                                             (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
4215                                             (USHORT)pDirEntry->TargetNameLength);
4216
4217             if( !NT_SUCCESS( ntStatus))
4218             {
4219
4220                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4221                               AFS_TRACE_LEVEL_ERROR,
4222                               "AFSProcessDFSLink UpdateTargetName failed for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4223                               &DirEntry->NameInformation.FileName,
4224                               DirEntry->ObjectInformation->FileId.Cell,
4225                               DirEntry->ObjectInformation->FileId.Volume,
4226                               DirEntry->ObjectInformation->FileId.Vnode,
4227                               DirEntry->ObjectInformation->FileId.Unique,
4228                               ntStatus);
4229
4230                 AFSReleaseResource( &DirEntry->NonPaged->Lock);
4231
4232                 try_return( ntStatus);
4233             }
4234
4235             AFSConvertToShared( &DirEntry->NonPaged->Lock);
4236         }
4237         else
4238         {
4239             AFSAcquireShared( &DirEntry->NonPaged->Lock,
4240                               TRUE);
4241         }
4242
4243         uniReparseName.MaximumLength = uniMUPDeviceName.Length +
4244                                                    sizeof( WCHAR) +
4245                                                    DirEntry->NameInformation.TargetName.Length +
4246                                                    sizeof( WCHAR);
4247
4248         if( RemainingPath != NULL &&
4249             RemainingPath->Length > 0)
4250         {
4251
4252             uniReparseName.MaximumLength += RemainingPath->Length;
4253         }
4254
4255         //
4256         // Allocate the reparse buffer
4257         //
4258
4259         uniReparseName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
4260                                                                    uniReparseName.MaximumLength,
4261                                                                    AFS_REPARSE_NAME_TAG);
4262
4263         if( uniReparseName.Buffer == NULL)
4264         {
4265
4266             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4267                           AFS_TRACE_LEVEL_ERROR,
4268                           "AFSProcessDFSLink uniReparseName.Buffer == NULL Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4269                           &DirEntry->NameInformation.FileName,
4270                           DirEntry->ObjectInformation->FileId.Cell,
4271                           DirEntry->ObjectInformation->FileId.Volume,
4272                           DirEntry->ObjectInformation->FileId.Vnode,
4273                           DirEntry->ObjectInformation->FileId.Unique,
4274                           STATUS_INSUFFICIENT_RESOURCES);
4275
4276             AFSReleaseResource( &DirEntry->NonPaged->Lock);
4277
4278             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4279         }
4280
4281         //
4282         // Start building the name
4283         //
4284
4285         RtlCopyMemory( uniReparseName.Buffer,
4286                        uniMUPDeviceName.Buffer,
4287                        uniMUPDeviceName.Length);
4288
4289         uniReparseName.Length = uniMUPDeviceName.Length;
4290
4291         if( DirEntry->NameInformation.TargetName.Buffer[ 0] != L'\\')
4292         {
4293
4294             uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)] = L'\\';
4295
4296             uniReparseName.Length += sizeof( WCHAR);
4297         }
4298
4299         RtlCopyMemory( &uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)],
4300                        DirEntry->NameInformation.TargetName.Buffer,
4301                        DirEntry->NameInformation.TargetName.Length);
4302
4303         uniReparseName.Length += DirEntry->NameInformation.TargetName.Length;
4304
4305         AFSReleaseResource( &DirEntry->NonPaged->Lock);
4306
4307         if( RemainingPath != NULL &&
4308             RemainingPath->Length > 0)
4309         {
4310
4311             if( uniReparseName.Buffer[ (uniReparseName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
4312                 RemainingPath->Buffer[ 0] != L'\\')
4313             {
4314
4315                 uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)] = L'\\';
4316
4317                 uniReparseName.Length += sizeof( WCHAR);
4318             }
4319
4320             RtlCopyMemory( &uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)],
4321                            RemainingPath->Buffer,
4322                            RemainingPath->Length);
4323
4324             uniReparseName.Length += RemainingPath->Length;
4325         }
4326
4327         //
4328         // Update the name in the file object
4329         //
4330
4331         if( FileObject->FileName.Buffer != NULL)
4332         {
4333
4334             AFSExFreePool( FileObject->FileName.Buffer);
4335         }
4336
4337         FileObject->FileName = uniReparseName;
4338
4339         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4340                       AFS_TRACE_LEVEL_VERBOSE,
4341                       "AFSProcessDFSLink Reparsing access to Fcb %wZ FID %08lX-%08lX-%08lX-%08lX to %wZ\n",
4342                       &DirEntry->NameInformation.FileName,
4343                       DirEntry->ObjectInformation->FileId.Cell,
4344                       DirEntry->ObjectInformation->FileId.Volume,
4345                       DirEntry->ObjectInformation->FileId.Vnode,
4346                       DirEntry->ObjectInformation->FileId.Unique,
4347                       &uniReparseName);
4348
4349         //
4350         // Return status reparse ...
4351         //
4352
4353         ntStatus = STATUS_REPARSE;
4354
4355 try_exit:
4356
4357         if ( pDirEntry)
4358         {
4359
4360             AFSExFreePool( pDirEntry);
4361         }
4362     }
4363
4364     return ntStatus;
4365 }