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         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2057                       AFS_TRACE_LEVEL_VERBOSE,
2058                       "AFSInsertDirectoryNode Insert DE %p for %wZ Clearing NOT_IN flag\n",
2059                       DirEntry,
2060                       &DirEntry->NameInformation.FileName);
2061
2062         ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE);
2063
2064         if( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead == NULL)
2065         {
2066
2067             ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = DirEntry;
2068
2069             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2070                           AFS_TRACE_LEVEL_VERBOSE,
2071                           "AFSInsertDirectoryNode Insert DE %p to head of case sensitive tree for %wZ\n",
2072                           DirEntry,
2073                           &DirEntry->NameInformation.FileName);
2074         }
2075         else
2076         {
2077
2078             AFSInsertCaseSensitiveDirEntry( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
2079                                             DirEntry);
2080
2081             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2082                           AFS_TRACE_LEVEL_VERBOSE,
2083                           "AFSInsertDirectoryNode Insert DE %p to case sensitive tree for %wZ\n",
2084                           DirEntry,
2085                           &DirEntry->NameInformation.FileName);
2086         }
2087
2088         if( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead == NULL)
2089         {
2090
2091             ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = DirEntry;
2092
2093             SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
2094
2095             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2096                           AFS_TRACE_LEVEL_VERBOSE,
2097                           "AFSInsertDirectoryNode Insert DE %p to head of case insensitive tree for %wZ\n",
2098                           DirEntry,
2099                           &DirEntry->NameInformation.FileName);
2100         }
2101         else
2102         {
2103
2104             AFSInsertCaseInsensitiveDirEntry( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
2105                                               DirEntry);
2106
2107             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2108                           AFS_TRACE_LEVEL_VERBOSE,
2109                           "AFSInsertDirectoryNode Insert DE %p to case insensitive tree for %wZ\n",
2110                           DirEntry,
2111                           &DirEntry->NameInformation.FileName);
2112         }
2113
2114         //
2115         // Into the shortname tree
2116         //
2117
2118         if( DirEntry->Type.Data.ShortNameTreeEntry.HashIndex != 0)
2119         {
2120
2121             if( ParentObjectInfo->Specific.Directory.ShortNameTree == NULL)
2122             {
2123
2124                 ParentObjectInfo->Specific.Directory.ShortNameTree = DirEntry;
2125
2126                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2127                               AFS_TRACE_LEVEL_VERBOSE,
2128                               "AFSInsertDirectoryNode Insert DE %p to head of shortname tree for %wZ\n",
2129                               DirEntry,
2130                               &DirEntry->NameInformation.FileName);
2131             }
2132             else
2133             {
2134
2135                 AFSInsertShortNameDirEntry( ParentObjectInfo->Specific.Directory.ShortNameTree,
2136                                             DirEntry);
2137
2138                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2139                               AFS_TRACE_LEVEL_VERBOSE,
2140                               "AFSInsertDirectoryNode Insert DE %p to shortname tree for %wZ\n",
2141                               DirEntry,
2142                               &DirEntry->NameInformation.FileName);
2143             }
2144         }
2145
2146         if( InsertInEnumList)
2147         {
2148
2149             //
2150             // And insert the node into the directory list
2151             //
2152
2153             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2154                           AFS_TRACE_LEVEL_VERBOSE,
2155                           "AFSInsertDirectoryNode Inserting entry %08lX %wZ FID %08lX-%08lX-%08lX-%08lXStatus %08lX\n",
2156                           DirEntry,
2157                           &DirEntry->NameInformation.FileName,
2158                           DirEntry->ObjectInformation->FileId.Cell,
2159                           DirEntry->ObjectInformation->FileId.Volume,
2160                           DirEntry->ObjectInformation->FileId.Vnode,
2161                           DirEntry->ObjectInformation->FileId.Unique);
2162
2163             if( ParentObjectInfo->Specific.Directory.DirectoryNodeListHead == NULL)
2164             {
2165
2166                 ParentObjectInfo->Specific.Directory.DirectoryNodeListHead = DirEntry;
2167             }
2168             else
2169             {
2170
2171                 ParentObjectInfo->Specific.Directory.DirectoryNodeListTail->ListEntry.fLink = (void *)DirEntry;
2172
2173                 DirEntry->ListEntry.bLink = (void *)ParentObjectInfo->Specific.Directory.DirectoryNodeListTail;
2174             }
2175
2176             ParentObjectInfo->Specific.Directory.DirectoryNodeListTail = DirEntry;
2177
2178             SetFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST);
2179
2180             InterlockedIncrement( &ParentObjectInfo->Specific.Directory.DirectoryNodeCount);
2181
2182             AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
2183                           AFS_TRACE_LEVEL_VERBOSE,
2184                           "AFSInsertDirectoryNode Adding entry %wZ Inc Count %d to parent FID %08lX-%08lX-%08lX-%08lX\n",
2185                               &DirEntry->NameInformation.FileName,
2186                               ParentObjectInfo->Specific.Directory.DirectoryNodeCount,
2187                               ParentObjectInfo->FileId.Cell,
2188                               ParentObjectInfo->FileId.Volume,
2189                               ParentObjectInfo->FileId.Vnode,
2190                               ParentObjectInfo->FileId.Unique);
2191         }
2192
2193         AFSReleaseResource( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
2194     }
2195
2196     return;
2197 }
2198
2199 NTSTATUS
2200 AFSDeleteDirEntry( IN AFSObjectInfoCB *ParentObjectInfo,
2201                    IN AFSDirectoryCB *DirEntry)
2202 {
2203
2204     NTSTATUS ntStatus = STATUS_SUCCESS;
2205
2206     __Enter
2207     {
2208
2209         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2210                       AFS_TRACE_LEVEL_VERBOSE,
2211                       "AFSDeleteDirEntry Deleting dir entry in parent %08lX Entry %08lX %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2212                       ParentObjectInfo,
2213                       DirEntry,
2214                       &DirEntry->NameInformation.FileName,
2215                       DirEntry->ObjectInformation->FileId.Cell,
2216                       DirEntry->ObjectInformation->FileId.Volume,
2217                       DirEntry->ObjectInformation->FileId.Vnode,
2218                       DirEntry->ObjectInformation->FileId.Unique);
2219
2220         AFSRemoveDirNodeFromParent( ParentObjectInfo,
2221                                     DirEntry,
2222                                     TRUE);
2223
2224         //
2225         // Free up the name buffer if it was reallocated
2226         //
2227
2228         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_RELEASE_NAME_BUFFER))
2229         {
2230
2231             AFSExFreePool( DirEntry->NameInformation.FileName.Buffer);
2232         }
2233
2234         if( BooleanFlagOn( DirEntry->Flags, AFS_DIR_RELEASE_TARGET_NAME_BUFFER))
2235         {
2236
2237             AFSExFreePool( DirEntry->NameInformation.TargetName.Buffer);
2238         }
2239
2240         //
2241         // Dereference the object for this dir entry
2242         //
2243
2244         ASSERT( DirEntry->ObjectInformation->ObjectReferenceCount > 0);
2245
2246         InterlockedDecrement( &DirEntry->ObjectInformation->ObjectReferenceCount);
2247
2248         AFSDbgLogMsg( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
2249                       AFS_TRACE_LEVEL_VERBOSE,
2250                       "AFSDeleteDirEntry Decrement count on object %08lX Cnt %d\n",
2251                       DirEntry->ObjectInformation,
2252                       DirEntry->ObjectInformation->ObjectReferenceCount);
2253
2254         ExDeleteResourceLite( &DirEntry->NonPaged->Lock);
2255
2256         AFSExFreePool( DirEntry->NonPaged);
2257
2258         //
2259         // Free up the dir entry
2260         //
2261
2262         AFSExFreePool( DirEntry);
2263     }
2264
2265     return ntStatus;
2266 }
2267
2268 NTSTATUS
2269 AFSRemoveDirNodeFromParent( IN AFSObjectInfoCB *ParentObjectInfo,
2270                             IN AFSDirectoryCB *DirEntry,
2271                             IN BOOLEAN RemoveFromEnumList)
2272 {
2273
2274     NTSTATUS ntStatus = STATUS_SUCCESS;
2275
2276     __Enter
2277     {
2278
2279
2280         ASSERT( ExIsResourceAcquiredExclusiveLite( ParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock));
2281
2282         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2283                       AFS_TRACE_LEVEL_VERBOSE,
2284                       "AFSRemoveDirNodeFromParent Removing DirEntry %08lX %wZ FID %08lX-%08lX-%08lX-%08lX from Parent %08lX\n",
2285                       DirEntry,
2286                       &DirEntry->NameInformation.FileName,
2287                       DirEntry->ObjectInformation->FileId.Cell,
2288                       DirEntry->ObjectInformation->FileId.Volume,
2289                       DirEntry->ObjectInformation->FileId.Vnode,
2290                       DirEntry->ObjectInformation->FileId.Unique,
2291                       ParentObjectInfo);
2292
2293         if( !BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_NOT_IN_PARENT_TREE))
2294         {
2295
2296             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2297                           AFS_TRACE_LEVEL_VERBOSE,
2298                           "AFSRemoveDirNodeFromParent Removing DirEntry %08lX name %wZ\n",
2299                           DirEntry,
2300                           &DirEntry->NameInformation.FileName);
2301
2302             AFSRemoveNameEntry( ParentObjectInfo,
2303                                 DirEntry);
2304         }
2305         else
2306         {
2307
2308             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2309                           AFS_TRACE_LEVEL_VERBOSE,
2310                           "AFSRemoveDirNodeFromParent DE %p for %wZ NOT removing entry due to flag set\n",
2311                           DirEntry,
2312                           &DirEntry->NameInformation.FileName);
2313
2314         }
2315
2316         if( RemoveFromEnumList &&
2317             BooleanFlagOn( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST))
2318         {
2319
2320             //
2321             // And remove the entry from the enumeration list
2322             //
2323
2324             if( DirEntry->ListEntry.fLink == NULL)
2325             {
2326
2327                 ParentObjectInfo->Specific.Directory.DirectoryNodeListTail = (AFSDirectoryCB *)DirEntry->ListEntry.bLink;
2328             }
2329             else
2330             {
2331
2332                 ((AFSDirectoryCB *)DirEntry->ListEntry.fLink)->ListEntry.bLink = DirEntry->ListEntry.bLink;
2333             }
2334
2335             if( DirEntry->ListEntry.bLink == NULL)
2336             {
2337
2338                 ParentObjectInfo->Specific.Directory.DirectoryNodeListHead = (AFSDirectoryCB *)DirEntry->ListEntry.fLink;
2339             }
2340             else
2341             {
2342
2343                 ((AFSDirectoryCB *)DirEntry->ListEntry.bLink)->ListEntry.fLink = DirEntry->ListEntry.fLink;
2344             }
2345
2346             ASSERT( ParentObjectInfo->Specific.Directory.DirectoryNodeCount > 0);
2347
2348             InterlockedDecrement( &ParentObjectInfo->Specific.Directory.DirectoryNodeCount);
2349
2350             ClearFlag( DirEntry->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST);
2351
2352             AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
2353                           AFS_TRACE_LEVEL_VERBOSE,
2354                           "AFSRemoveDirNodeFromParent Removing entry %wZ Dec Count %d to parent FID %08lX-%08lX-%08lX-%08lX\n",
2355                           &DirEntry->NameInformation.FileName,
2356                           ParentObjectInfo->Specific.Directory.DirectoryNodeCount,
2357                           ParentObjectInfo->FileId.Cell,
2358                           ParentObjectInfo->FileId.Volume,
2359                           ParentObjectInfo->FileId.Vnode,
2360                           ParentObjectInfo->FileId.Unique);
2361
2362             DirEntry->ListEntry.fLink = NULL;
2363             DirEntry->ListEntry.bLink = NULL;
2364         }
2365     }
2366
2367     return ntStatus;
2368 }
2369
2370 NTSTATUS
2371 AFSFixupTargetName( IN OUT PUNICODE_STRING FileName,
2372                     IN OUT PUNICODE_STRING TargetFileName)
2373 {
2374
2375     NTSTATUS ntStatus = STATUS_SUCCESS;
2376     UNICODE_STRING uniFileName;
2377
2378     __Enter
2379     {
2380
2381         //
2382         // We will process backwards from the end of the name looking
2383         // for the first \ we encounter
2384         //
2385
2386         uniFileName.Length = FileName->Length;
2387         uniFileName.MaximumLength = FileName->MaximumLength;
2388
2389         uniFileName.Buffer = FileName->Buffer;
2390
2391         while( TRUE)
2392         {
2393
2394             if( uniFileName.Buffer[ (uniFileName.Length/sizeof( WCHAR)) - 1] == L'\\')
2395             {
2396
2397                 //
2398                 // Subtract one more character off of the filename if it is not the root
2399                 //
2400
2401                 if( uniFileName.Length > sizeof( WCHAR))
2402                 {
2403
2404                     uniFileName.Length -= sizeof( WCHAR);
2405                 }
2406
2407                 //
2408                 // Now build up the target name
2409                 //
2410
2411                 TargetFileName->Length = FileName->Length - uniFileName.Length;
2412
2413                 //
2414                 // If we are not on the root then fixup the name
2415                 //
2416
2417                 if( uniFileName.Length > sizeof( WCHAR))
2418                 {
2419
2420                     TargetFileName->Length -= sizeof( WCHAR);
2421
2422                     TargetFileName->Buffer = &uniFileName.Buffer[ (uniFileName.Length/sizeof( WCHAR)) + 1];
2423                 }
2424                 else
2425                 {
2426
2427                     TargetFileName->Buffer = &uniFileName.Buffer[ uniFileName.Length/sizeof( WCHAR)];
2428                 }
2429
2430                 //
2431                 // Fixup the passed back filename length
2432                 //
2433
2434                 FileName->Length = uniFileName.Length;
2435
2436                 TargetFileName->MaximumLength = TargetFileName->Length;
2437
2438                 break;
2439             }
2440
2441             uniFileName.Length -= sizeof( WCHAR);
2442         }
2443     }
2444
2445     return ntStatus;
2446 }
2447
2448 NTSTATUS
2449 AFSParseName( IN PIRP Irp,
2450               IN GUID *AuthGroup,
2451               OUT PUNICODE_STRING FileName,
2452               OUT PUNICODE_STRING ParsedFileName,
2453               OUT PUNICODE_STRING RootFileName,
2454               OUT ULONG *ParseFlags,
2455               OUT AFSVolumeCB   **VolumeCB,
2456               OUT AFSDirectoryCB **ParentDirectoryCB,
2457               OUT AFSNameArrayHdr **NameArray)
2458 {
2459
2460     NTSTATUS            ntStatus = STATUS_SUCCESS;
2461     PIO_STACK_LOCATION  pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2462     AFSDeviceExt       *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2463     UNICODE_STRING      uniFullName, uniComponentName, uniRemainingPath;
2464     ULONG               ulCRC = 0;
2465     AFSDirectoryCB     *pDirEntry = NULL, *pShareDirEntry = NULL, *pTargetDirEntry = NULL;
2466     USHORT              usIndex = 0, usDriveIndex = 0;
2467     AFSCcb             *pRelatedCcb = NULL;
2468     AFSNameArrayHdr    *pNameArray = NULL, *pRelatedNameArray = NULL;
2469     USHORT              usComponentIndex = 0;
2470     USHORT              usComponentLength = 0;
2471     AFSVolumeCB        *pVolumeCB = NULL;
2472     AFSFcb             *pRelatedFcb = NULL;
2473     BOOLEAN             bReleaseTreeLock = FALSE;
2474     BOOLEAN             bIsAllShare = FALSE;
2475
2476     __Enter
2477     {
2478
2479         //
2480         // Indicate we are opening a root ...
2481         //
2482
2483         *ParseFlags = AFS_PARSE_FLAG_ROOT_ACCESS;
2484
2485         if( pIrpSp->FileObject->RelatedFileObject != NULL)
2486         {
2487
2488             pRelatedFcb = (AFSFcb *)pIrpSp->FileObject->RelatedFileObject->FsContext;
2489
2490             pRelatedCcb = (AFSCcb *)pIrpSp->FileObject->RelatedFileObject->FsContext2;
2491
2492             pRelatedNameArray = pRelatedCcb->NameArray;
2493
2494             uniFullName = pIrpSp->FileObject->FileName;
2495
2496             ASSERT( pRelatedFcb != NULL);
2497
2498             //
2499             // No wild cards in the name
2500             //
2501
2502             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2503                           AFS_TRACE_LEVEL_VERBOSE_2,
2504                           "AFSParseName (%08lX) Relative open for %wZ FID %08lX-%08lX-%08lX-%08lX component %wZ\n",
2505                           Irp,
2506                           &pRelatedCcb->DirectoryCB->NameInformation.FileName,
2507                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Cell,
2508                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Volume,
2509                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
2510                           pRelatedCcb->DirectoryCB->ObjectInformation->FileId.Unique,
2511                           &uniFullName);
2512
2513             if( FsRtlDoesNameContainWildCards( &uniFullName))
2514             {
2515
2516                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2517                               AFS_TRACE_LEVEL_ERROR,
2518                               "AFSParseName (%08lX) Component %wZ contains wild cards\n",
2519                               Irp,
2520                               &uniFullName);
2521
2522                 try_return( ntStatus = STATUS_OBJECT_NAME_INVALID);
2523             }
2524
2525             pVolumeCB = pRelatedFcb->ObjectInformation->VolumeCB;
2526
2527             pDirEntry = pRelatedCcb->DirectoryCB;
2528
2529             *FileName = pIrpSp->FileObject->FileName;
2530
2531             //
2532             // Grab the root node exclusive before returning
2533             //
2534
2535             AFSAcquireExcl( pVolumeCB->VolumeLock,
2536                             TRUE);
2537
2538             if( BooleanFlagOn( pVolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
2539                 BooleanFlagOn( pVolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE))
2540             {
2541
2542                 //
2543                 // The volume has been taken off line so fail the access
2544                 //
2545
2546                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2547                               AFS_TRACE_LEVEL_ERROR,
2548                               "AFSParseName (%08lX) Volume %08lX:%08lX OFFLINE/INVALID\n",
2549                               Irp,
2550                               pVolumeCB->ObjectInformation.FileId.Cell,
2551                               pVolumeCB->ObjectInformation.FileId.Volume);
2552
2553                 AFSReleaseResource( pVolumeCB->VolumeLock);
2554
2555                 try_return( ntStatus = STATUS_DEVICE_NOT_READY);
2556             }
2557
2558             if( BooleanFlagOn( pVolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_VERIFY))
2559             {
2560
2561                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2562                               AFS_TRACE_LEVEL_VERBOSE,
2563                               "AFSParseName (%08lX) Verifying root of volume %08lX:%08lX\n",
2564                               Irp,
2565                               pVolumeCB->ObjectInformation.FileId.Cell,
2566                               pVolumeCB->ObjectInformation.FileId.Volume);
2567
2568                 ntStatus = AFSVerifyVolume( (ULONGLONG)PsGetCurrentProcessId(),
2569                                             pVolumeCB);
2570
2571                 if( !NT_SUCCESS( ntStatus))
2572                 {
2573
2574                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2575                                   AFS_TRACE_LEVEL_ERROR,
2576                                   "AFSParseName (%08lX) Failed verification of root Status %08lX\n",
2577                                   Irp,
2578                                   ntStatus);
2579
2580                     AFSReleaseResource( pVolumeCB->VolumeLock);
2581
2582                     try_return( ntStatus);
2583                 }
2584             }
2585
2586             AFSConvertToShared( pVolumeCB->VolumeLock);
2587
2588             if( BooleanFlagOn( pDirEntry->ObjectInformation->Flags, AFS_OBJECT_FLAGS_VERIFY))
2589             {
2590
2591                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2592                               AFS_TRACE_LEVEL_VERBOSE,
2593                               "AFSParseName (%08lX) Verifying parent %wZ FID %08lX-%08lX-%08lX-%08lX\n",
2594                               Irp,
2595                               &pDirEntry->NameInformation.FileName,
2596                               pDirEntry->ObjectInformation->FileId.Cell,
2597                               pDirEntry->ObjectInformation->FileId.Volume,
2598                               pDirEntry->ObjectInformation->FileId.Vnode,
2599                               pDirEntry->ObjectInformation->FileId.Unique);
2600
2601                 ntStatus = AFSVerifyEntry( AuthGroup,
2602                                            pDirEntry);
2603
2604                 if( !NT_SUCCESS( ntStatus))
2605                 {
2606
2607                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2608                                   AFS_TRACE_LEVEL_VERBOSE,
2609                                   "AFSParseName (%08lX) Failed verification of parent %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
2610                                   Irp,
2611                                   &pDirEntry->NameInformation.FileName,
2612                                   pDirEntry->ObjectInformation->FileId.Cell,
2613                                   pDirEntry->ObjectInformation->FileId.Volume,
2614                                   pDirEntry->ObjectInformation->FileId.Vnode,
2615                                   pDirEntry->ObjectInformation->FileId.Unique,
2616                                   ntStatus);
2617
2618                     AFSReleaseResource( pVolumeCB->VolumeLock);
2619
2620                     try_return( ntStatus);
2621                 }
2622             }
2623
2624             //
2625             // Create our full path name buffer
2626             //
2627
2628             uniFullName.MaximumLength = pRelatedCcb->FullFileName.Length +
2629                                                     sizeof( WCHAR) +
2630                                                     pIrpSp->FileObject->FileName.Length +
2631                                                     sizeof( WCHAR);
2632
2633             uniFullName.Length = 0;
2634
2635             uniFullName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
2636                                                                     uniFullName.MaximumLength,
2637                                                                     AFS_NAME_BUFFER_THREE_TAG);
2638
2639             if( uniFullName.Buffer == NULL)
2640             {
2641
2642                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2643                               AFS_TRACE_LEVEL_ERROR,
2644                               "AFSParseName (%08lX) Failed to allocate full name buffer\n",
2645                               Irp);
2646
2647                 AFSReleaseResource( pVolumeCB->VolumeLock);
2648
2649                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2650             }
2651
2652             RtlZeroMemory( uniFullName.Buffer,
2653                            uniFullName.MaximumLength);
2654
2655             RtlCopyMemory( uniFullName.Buffer,
2656                            pRelatedCcb->FullFileName.Buffer,
2657                            pRelatedCcb->FullFileName.Length);
2658
2659             uniFullName.Length = pRelatedCcb->FullFileName.Length;
2660
2661             usComponentIndex = (USHORT)(uniFullName.Length/sizeof( WCHAR));
2662
2663             usComponentLength = pIrpSp->FileObject->FileName.Length;
2664
2665             if( uniFullName.Buffer[ (uniFullName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
2666                 pIrpSp->FileObject->FileName.Length > 0 &&
2667                 pIrpSp->FileObject->FileName.Buffer[ 0] != L'\\' &&
2668                 pIrpSp->FileObject->FileName.Buffer[ 0] != L':')
2669             {
2670
2671                 uniFullName.Buffer[ (uniFullName.Length/sizeof( WCHAR))] = L'\\';
2672
2673                 uniFullName.Length += sizeof( WCHAR);
2674
2675                 usComponentLength += sizeof( WCHAR);
2676             }
2677
2678             if( pIrpSp->FileObject->FileName.Length > 0)
2679             {
2680
2681                 RtlCopyMemory( &uniFullName.Buffer[ uniFullName.Length/sizeof( WCHAR)],
2682                                pIrpSp->FileObject->FileName.Buffer,
2683                                pIr\epSp->FileObject->FileName.Length);
2684
2685                 uniFullName.Length += pIrpSp->FileObject->FileName.Length;
2686             }
2687
2688             *RootFileName = uniFullName;
2689
2690             //
2691             // We populate up to the current parent
2692             //
2693
2694             if( pRelatedNameArray == NULL)
2695             {
2696
2697                 //
2698                 // Init and populate our name array
2699                 //
2700
2701                 pNameArray = AFSInitNameArray( NULL,
2702                                                0);
2703
2704                 if( pNameArray == NULL)
2705                 {
2706
2707                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2708                                   AFS_TRACE_LEVEL_VERBOSE,
2709                                   "AFSParseName (%08lX) Failed to initialize name array\n",
2710                                   Irp);
2711
2712                     AFSExFreePool( uniFullName.Buffer);
2713
2714                     AFSReleaseResource( pVolumeCB->VolumeLock);
2715
2716                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2717                 }
2718
2719                 ntStatus = AFSPopulateNameArray( pNameArray,
2720                                                  NULL,
2721                                                  pRelatedCcb->DirectoryCB);
2722             }
2723             else
2724             {
2725
2726                 //
2727                 // Init and populate our name array
2728                 //
2729
2730                 pNameArray = AFSInitNameArray( NULL,
2731                                                pRelatedNameArray->MaxElementCount);
2732
2733                 if( pNameArray == NULL)
2734                 {
2735
2736                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2737                                   AFS_TRACE_LEVEL_VERBOSE,
2738                                   "AFSParseName (%08lX) Failed to initialize name array\n",
2739                                   Irp);
2740
2741                     AFSExFreePool( uniFullName.Buffer);
2742
2743                     AFSReleaseResource( pVolumeCB->VolumeLock);
2744
2745                     try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2746                 }
2747
2748                 ntStatus = AFSPopulateNameArrayFromRelatedArray( pNameArray,
2749                                                                  pRelatedNameArray,
2750                                                                  pRelatedCcb->DirectoryCB);
2751             }
2752
2753             if( !NT_SUCCESS( ntStatus))
2754             {
2755
2756                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2757                               AFS_TRACE_LEVEL_VERBOSE,
2758                               "AFSParseName (%08lX) Failed to populate name array\n",
2759                               Irp);
2760
2761                 AFSExFreePool( uniFullName.Buffer);
2762
2763                 AFSReleaseResource( pVolumeCB->VolumeLock);
2764
2765                 try_return( ntStatus);
2766             }
2767
2768             ParsedFileName->Length = usComponentLength;
2769             ParsedFileName->MaximumLength = uniFullName.MaximumLength;
2770
2771             ParsedFileName->Buffer = &uniFullName.Buffer[ usComponentIndex];
2772
2773             //
2774             // Indicate to caller that RootFileName must be freed
2775             //
2776
2777             SetFlag( *ParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER);
2778
2779             *NameArray = pNameArray;
2780
2781             *VolumeCB = pVolumeCB;
2782
2783             //
2784             // Increment our volume reference count
2785             //
2786
2787             InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
2788
2789             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
2790                           AFS_TRACE_LEVEL_VERBOSE,
2791                           "AFSParseName Increment count on volume %08lX Cnt %d\n",
2792                           pVolumeCB,
2793                           pVolumeCB->VolumeReferenceCount);
2794
2795             *ParentDirectoryCB = pDirEntry;
2796
2797             InterlockedIncrement( &pDirEntry->OpenReferenceCount);
2798
2799             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
2800                           AFS_TRACE_LEVEL_VERBOSE,
2801                           "AFSParseName Increment1 count on %wZ DE %p Ccb %p Cnt %d\n",
2802                           &pDirEntry->NameInformation.FileName,
2803                           pDirEntry,
2804                           NULL,
2805                           pDirEntry->OpenReferenceCount);
2806
2807             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2808                           AFS_TRACE_LEVEL_VERBOSE_2,
2809                           "AFSParseName (%08lX) Returning full name %wZ\n",
2810                           Irp,
2811                           &uniFullName);
2812
2813             try_return( ntStatus);
2814         }
2815
2816         //
2817         // No wild cards in the name
2818         //
2819
2820         uniFullName = pIrpSp->FileObject->FileName;
2821
2822         if( FsRtlDoesNameContainWildCards( &uniFullName) ||
2823             uniFullName.Length < AFSServerName.Length)
2824         {
2825
2826             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2827                           AFS_TRACE_LEVEL_ERROR,
2828                           "AFSParseName (%08lX) Name %wZ contains wild cards or too short\n",
2829                           Irp,
2830                           &uniFullName);
2831
2832             try_return( ntStatus = STATUS_OBJECT_NAME_INVALID);
2833         }
2834
2835         //
2836         // The name is a fully qualified name. Parse out the server/share names and
2837         // point to the root qualified name
2838         // First thing is to locate the server name
2839         //
2840
2841         FsRtlDissectName( uniFullName,
2842                           &uniComponentName,
2843                           &uniRemainingPath);
2844
2845         uniFullName = uniRemainingPath;
2846
2847         //
2848         // This component is the server name we are serving
2849         //
2850
2851         if( RtlCompareUnicodeString( &uniComponentName,
2852                                      &AFSServerName,
2853                                      TRUE) != 0)
2854         {
2855
2856             //
2857             // Drive letter based name?
2858             //
2859
2860             uniFullName = pIrpSp->FileObject->FileName;
2861
2862             while( usIndex < uniFullName.Length/sizeof( WCHAR))
2863             {
2864
2865                 if( uniFullName.Buffer[ usIndex] == L':')
2866                 {
2867
2868                     uniFullName.Buffer = &uniFullName.Buffer[ usIndex + 2];
2869
2870                     uniFullName.Length -= (usIndex + 2) * sizeof( WCHAR);
2871
2872                     usDriveIndex = usIndex - 1;
2873
2874                     break;
2875                 }
2876
2877                 usIndex++;
2878             }
2879
2880             //
2881             // Do we have the right server name now?
2882             //
2883
2884             FsRtlDissectName( uniFullName,
2885                               &uniComponentName,
2886                               &uniRemainingPath);
2887
2888             uniFullName = uniRemainingPath;
2889
2890             //
2891             // This component is the server name we are serving
2892             //
2893
2894             if( RtlCompareUnicodeString( &uniComponentName,
2895                                          &AFSServerName,
2896                                          TRUE) != 0)
2897             {
2898
2899                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2900                               AFS_TRACE_LEVEL_ERROR,
2901                               "AFSParseName (%08lX) Name %wZ does not have server name\n",
2902                               Irp,
2903                               &pIrpSp->FileObject->FileName);
2904
2905                 try_return( ntStatus = STATUS_BAD_NETWORK_NAME);
2906             }
2907
2908             //
2909             // Validate this drive letter is actively mapped
2910             //
2911
2912             if( usDriveIndex > 0 &&
2913                 !AFSIsDriveMapped( pIrpSp->FileObject->FileName.Buffer[ usDriveIndex]))
2914             {
2915
2916                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2917                               AFS_TRACE_LEVEL_ERROR,
2918                               "AFSParseName (%08lX) Name %wZ contains invalid drive mapping\n",
2919                               Irp,
2920                               &pIrpSp->FileObject->FileName);
2921
2922                 try_return( ntStatus = STATUS_BAD_NETWORK_NAME);
2923             }
2924         }
2925
2926         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2927                       AFS_TRACE_LEVEL_VERBOSE_2,
2928                       "AFSParseName (%08lX) Processing full name %wZ\n",
2929                       Irp,
2930                       &uniFullName);
2931
2932         if( uniFullName.Length > 0 &&
2933             uniFullName.Buffer[ (uniFullName.Length/sizeof( WCHAR)) - 1] == L'\\')
2934         {
2935
2936             uniFullName.Length -= sizeof( WCHAR);
2937         }
2938
2939         //
2940         // Be sure we are online and ready to go
2941         //
2942
2943         AFSAcquireExcl( AFSGlobalRoot->VolumeLock,
2944                         TRUE);
2945
2946         if( BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_OBJECT_INVALID) ||
2947             BooleanFlagOn( AFSGlobalRoot->Flags, AFS_VOLUME_FLAGS_OFFLINE))
2948         {
2949
2950             //
2951             // The volume has been taken off line so fail the access
2952             //
2953
2954             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2955                           AFS_TRACE_LEVEL_ERROR,
2956                           "AFSParseName (%08lX) Volume %08lX:%08lX OFFLINE/INVALID\n",
2957                           Irp,
2958                           AFSGlobalRoot->ObjectInformation.FileId.Cell,
2959                           AFSGlobalRoot->ObjectInformation.FileId.Volume);
2960
2961             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
2962
2963             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
2964         }
2965
2966         if( BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_VERIFY))
2967         {
2968
2969             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2970                           AFS_TRACE_LEVEL_VERBOSE,
2971                           "AFSParseName (%08lX) Verifying root of volume %08lX:%08lX\n",
2972                           Irp,
2973                           AFSGlobalRoot->ObjectInformation.FileId.Cell,
2974                           AFSGlobalRoot->ObjectInformation.FileId.Volume);
2975
2976             ntStatus = AFSVerifyVolume( (ULONGLONG)PsGetCurrentProcessId(),
2977                                         AFSGlobalRoot);
2978
2979             if( !NT_SUCCESS( ntStatus))
2980             {
2981
2982                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2983                               AFS_TRACE_LEVEL_ERROR,
2984                               "AFSParseName (%08lX) Failed verification of root Status %08lX\n",
2985                               Irp,
2986                               ntStatus);
2987
2988                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
2989
2990                 try_return( ntStatus);
2991             }
2992         }
2993
2994         if( !BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
2995         {
2996
2997             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2998                           AFS_TRACE_LEVEL_VERBOSE,
2999                           "AFSParseName (%08lX) Enumerating global root of volume %08lX:%08lX\n",
3000                           Irp,
3001                           AFSGlobalRoot->ObjectInformation.FileId.Cell,
3002                           AFSGlobalRoot->ObjectInformation.FileId.Volume);
3003
3004             ntStatus = AFSEnumerateGlobalRoot( AuthGroup);
3005
3006             if( !NT_SUCCESS( ntStatus))
3007             {
3008
3009                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3010                               AFS_TRACE_LEVEL_ERROR,
3011                               "AFSParseName (%08lX) Failed enumeraiton of root Status %08lX\n",
3012                               Irp,
3013                               ntStatus);
3014
3015                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3016
3017                 try_return( ntStatus);
3018             }
3019         }
3020
3021         //
3022         // Check for the \\Server access and return it as though it where \\Server\Globalroot
3023         //
3024
3025         if( uniRemainingPath.Buffer == NULL ||
3026             ( uniRemainingPath.Length == sizeof( WCHAR) &&
3027               uniRemainingPath.Buffer[ 0] == L'\\'))
3028         {
3029
3030             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3031                           AFS_TRACE_LEVEL_VERBOSE_2,
3032                           "AFSParseName (%08lX) Returning global root access\n",
3033                           Irp);
3034
3035             InterlockedIncrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3036
3037             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3038                           AFS_TRACE_LEVEL_VERBOSE,
3039                           "AFSParseName Increment2 count on %wZ DE %p Ccb %p Cnt %d\n",
3040                           &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
3041                           AFSGlobalRoot->DirectoryCB,
3042                           NULL,
3043                           AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3044
3045             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3046
3047             *VolumeCB = NULL;
3048
3049             FileName->Length = 0;
3050             FileName->MaximumLength = 0;
3051             FileName->Buffer = NULL;
3052
3053             try_return( ntStatus = STATUS_SUCCESS);
3054         }
3055
3056         *RootFileName = uniFullName;
3057
3058         //
3059         // Include the starting \ in the root name
3060         //
3061
3062         if( RootFileName->Buffer[ 0] != L'\\')
3063         {
3064             RootFileName->Buffer--;
3065             RootFileName->Length += sizeof( WCHAR);
3066             RootFileName->MaximumLength += sizeof( WCHAR);
3067         }
3068
3069         //
3070         // Get the 'share' name
3071         //
3072
3073         FsRtlDissectName( uniFullName,
3074                           &uniComponentName,
3075                           &uniRemainingPath);
3076
3077         //
3078         // If this is the ALL access then perform some additional processing
3079         //
3080
3081         if( RtlCompareUnicodeString( &uniComponentName,
3082                                      &AFSGlobalRootName,
3083                                      TRUE) == 0)
3084         {
3085
3086             bIsAllShare = TRUE;
3087
3088             //
3089             // If there is nothing else then get out
3090             //
3091
3092             if( uniRemainingPath.Buffer == NULL ||
3093                 uniRemainingPath.Length == 0 ||
3094                 ( uniRemainingPath.Length == sizeof( WCHAR) &&
3095                   uniRemainingPath.Buffer[ 0] == L'\\'))
3096             {
3097
3098                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3099                               AFS_TRACE_LEVEL_VERBOSE_2,
3100                               "AFSParseName (%08lX) Returning global root access\n",
3101                               Irp);
3102
3103                 InterlockedIncrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3104
3105                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3106                               AFS_TRACE_LEVEL_VERBOSE,
3107                               "AFSParseName Increment3 count on %wZ DE %p Ccb %p Cnt %d\n",
3108                               &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
3109                               AFSGlobalRoot->DirectoryCB,
3110                               NULL,
3111                               AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3112
3113                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3114
3115                 *VolumeCB = NULL;
3116
3117                 FileName->Length = 0;
3118                 FileName->MaximumLength = 0;
3119                 FileName->Buffer = NULL;
3120
3121                 try_return( ntStatus = STATUS_SUCCESS);
3122             }
3123
3124             //
3125             // Process the name again to strip off the ALL portion
3126             //
3127
3128             uniFullName = uniRemainingPath;
3129
3130             FsRtlDissectName( uniFullName,
3131                               &uniComponentName,
3132                               &uniRemainingPath);
3133
3134             //
3135             // Check for the PIOCtl name
3136             //
3137
3138             if( RtlCompareUnicodeString( &uniComponentName,
3139                                          &AFSPIOCtlName,
3140                                          TRUE) == 0)
3141             {
3142
3143                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3144                               AFS_TRACE_LEVEL_VERBOSE_2,
3145                               "AFSParseName (%08lX) Returning root PIOCtl access\n",
3146                               Irp);
3147
3148                 InterlockedIncrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3149
3150                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3151                               AFS_TRACE_LEVEL_VERBOSE,
3152                               "AFSParseName Increment4 count on %wZ DE %p Ccb %p Cnt %d\n",
3153                               &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
3154                               AFSGlobalRoot->DirectoryCB,
3155                               NULL,
3156                               AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
3157
3158                 AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3159
3160                 ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3161
3162                 *VolumeCB = NULL;
3163
3164                 *FileName = AFSPIOCtlName;
3165
3166                 try_return( ntStatus = STATUS_SUCCESS);
3167             }
3168         }
3169         else if( (pDirEntry = AFSGetSpecialShareNameEntry( &uniComponentName,
3170                                                            &uniRemainingPath)) != NULL)
3171         {
3172
3173             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3174                           AFS_TRACE_LEVEL_VERBOSE_2,
3175                           "AFSParseName (%08lX) Returning root share name %wZ access\n",
3176                           Irp,
3177                           &uniComponentName);
3178
3179             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3180
3181             //
3182             // Add in the full share name to pass back
3183             //
3184
3185             if( uniRemainingPath.Buffer != NULL)
3186             {
3187
3188                 //
3189                 // This routine strips off the leading slash so add it back in
3190                 //
3191
3192                 uniRemainingPath.Buffer--;
3193                 uniRemainingPath.Length += sizeof( WCHAR);
3194                 uniRemainingPath.MaximumLength += sizeof( WCHAR);
3195
3196                 //
3197                 // And the cell name
3198                 //
3199
3200                 uniRemainingPath.Buffer -= (uniComponentName.Length/sizeof( WCHAR));
3201                 uniRemainingPath.Length += uniComponentName.Length;
3202                 uniRemainingPath.MaximumLength += uniComponentName.Length;
3203
3204                 uniComponentName = uniRemainingPath;
3205             }
3206
3207             *VolumeCB = NULL;
3208
3209             *FileName = uniComponentName;
3210
3211             *ParentDirectoryCB = pDirEntry;
3212
3213             ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3214
3215             InterlockedIncrement( &pDirEntry->OpenReferenceCount);
3216
3217             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3218                           AFS_TRACE_LEVEL_VERBOSE,
3219                           "AFSParseName Increment5 count on %wZ DE %p Ccb %p Cnt %d\n",
3220                           &pDirEntry->NameInformation.FileName,
3221                           pDirEntry,
3222                           NULL,
3223                           pDirEntry->OpenReferenceCount);
3224
3225             try_return( ntStatus = STATUS_SUCCESS);
3226         }
3227
3228         //
3229         // Determine the 'share' we are accessing
3230         //
3231
3232         ulCRC = AFSGenerateCRC( &uniComponentName,
3233                                 FALSE);
3234
3235         AFSAcquireShared( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
3236                           TRUE);
3237
3238         bReleaseTreeLock = TRUE;
3239
3240         AFSLocateCaseSensitiveDirEntry( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
3241                                         ulCRC,
3242                                         &pDirEntry);
3243
3244         if( pDirEntry == NULL)
3245         {
3246
3247             ulCRC = AFSGenerateCRC( &uniComponentName,
3248                                     TRUE);
3249
3250             AFSLocateCaseInsensitiveDirEntry( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
3251                                               ulCRC,
3252                                               &pDirEntry);
3253
3254             if( pDirEntry == NULL)
3255             {
3256
3257                 //
3258                 // OK, if this component is a valid short name then try
3259                 // a lookup in the short name tree
3260                 //
3261
3262                 if( RtlIsNameLegalDOS8Dot3( &uniComponentName,
3263                                             NULL,
3264                                             NULL))
3265                 {
3266
3267                     AFSLocateShortNameDirEntry( AFSGlobalRoot->ObjectInformation.Specific.Directory.ShortNameTree,
3268                                                 ulCRC,
3269                                                 &pDirEntry);
3270                 }
3271
3272                 if( pDirEntry == NULL)
3273                 {
3274
3275                     //
3276                     // Check with the service whether it is a valid cell name
3277                     //
3278
3279                     AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
3280
3281                     bReleaseTreeLock = FALSE;
3282
3283                     ntStatus = AFSCheckCellName( AuthGroup,
3284                                                  &uniComponentName,
3285                                                  &pDirEntry);
3286
3287                     if( !NT_SUCCESS( ntStatus))
3288                     {
3289                         AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3290
3291                         if ( bIsAllShare &&
3292                              uniRemainingPath.Length == 0 &&
3293                              ntStatus == STATUS_OBJECT_PATH_NOT_FOUND)
3294                         {
3295
3296                             ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
3297                         }
3298
3299                         try_return( ntStatus);
3300                     }
3301                 }
3302             }
3303         }
3304
3305         if( bReleaseTreeLock)
3306         {
3307             AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
3308         }
3309
3310         //
3311         // Be sure we are starting from the correct volume
3312         //
3313
3314         if( pDirEntry->ObjectInformation->VolumeCB != AFSGlobalRoot)
3315         {
3316
3317             //
3318             // We dropped the global root in the CheckCellName routine which is the
3319             // only way we can be here
3320             //
3321
3322             pVolumeCB = pDirEntry->ObjectInformation->VolumeCB;
3323
3324             //
3325             // In this case don't add back in the 'share' name since that is where we are
3326             // starting. Just put the leading slash back in
3327             //
3328
3329             if( uniRemainingPath.Buffer != NULL)
3330             {
3331
3332                 uniRemainingPath.Buffer--;
3333                 uniRemainingPath.Length += sizeof( WCHAR);
3334                 uniRemainingPath.MaximumLength += sizeof( WCHAR);
3335
3336                 if( uniRemainingPath.Length > sizeof( WCHAR))
3337                 {
3338
3339                     ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3340                 }
3341
3342                 //
3343                 // Pass back the parent being the root of the volume
3344                 //
3345
3346                 *ParentDirectoryCB = pVolumeCB->DirectoryCB;
3347             }
3348             else
3349             {
3350
3351                 //
3352                 // Pass back a root slash
3353                 //
3354
3355                 uniRemainingPath = uniComponentName;
3356
3357                 uniRemainingPath.Buffer--;
3358                 uniRemainingPath.Length = sizeof( WCHAR);
3359                 uniRemainingPath.MaximumLength = sizeof( WCHAR);
3360
3361                 //
3362                 // This is a root open so pass back no parent
3363                 //
3364
3365                 *ParentDirectoryCB = NULL;
3366             }
3367         }
3368         else
3369         {
3370
3371             pVolumeCB = AFSGlobalRoot;
3372
3373             //
3374             // Add back in the 'share' portion of the name since we will parse it out on return
3375             //
3376
3377             if( uniRemainingPath.Buffer != NULL)
3378             {
3379
3380                 //
3381                 // This routine strips off the leading slash so add it back in
3382                 //
3383
3384                 uniRemainingPath.Buffer--;
3385                 uniRemainingPath.Length += sizeof( WCHAR);
3386                 uniRemainingPath.MaximumLength += sizeof( WCHAR);
3387
3388                 if( uniRemainingPath.Length > sizeof( WCHAR))
3389                 {
3390
3391                     ClearFlag( *ParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS);
3392                 }
3393
3394                 //
3395                 // And the cell name
3396                 //
3397
3398                 uniRemainingPath.Buffer -= (uniComponentName.Length/sizeof( WCHAR));
3399                 uniRemainingPath.Length += uniComponentName.Length;
3400                 uniRemainingPath.MaximumLength += uniComponentName.Length;
3401             }
3402             else
3403             {
3404
3405                 uniRemainingPath = uniComponentName;
3406             }
3407
3408             //
3409             // And the leading slash again ...
3410             //
3411
3412             uniRemainingPath.Buffer--;
3413             uniRemainingPath.Length += sizeof( WCHAR);
3414             uniRemainingPath.MaximumLength += sizeof( WCHAR);
3415
3416             InterlockedIncrement( &pVolumeCB->DirectoryCB->OpenReferenceCount);
3417
3418             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3419                           AFS_TRACE_LEVEL_VERBOSE,
3420                           "AFSParseName Increment6 count on %wZ DE %p Ccb %p Cnt %d\n",
3421                           &pVolumeCB->DirectoryCB->NameInformation.FileName,
3422                           pVolumeCB->DirectoryCB,
3423                           NULL,
3424                           pVolumeCB->DirectoryCB->OpenReferenceCount);
3425
3426             //
3427             // Pass back the parent being the volume root
3428             //
3429
3430             *ParentDirectoryCB = pVolumeCB->DirectoryCB;
3431         }
3432
3433         //
3434         // We only need the volume shared at this point
3435         //
3436
3437         AFSConvertToShared( pVolumeCB->VolumeLock);
3438
3439         //
3440         // Init our name array
3441         //
3442
3443         pNameArray = AFSInitNameArray( pVolumeCB->DirectoryCB,
3444                                        0);
3445
3446         if( pNameArray == NULL)
3447         {
3448
3449             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3450                           AFS_TRACE_LEVEL_VERBOSE,
3451                           "AFSParseName (%08lX) Failed to initialize name array\n",
3452                           Irp);
3453
3454             AFSReleaseResource( pVolumeCB->VolumeLock);
3455
3456             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
3457         }
3458
3459         //
3460         // Return the remaining portion as the file name
3461         //
3462
3463         *FileName = uniRemainingPath;
3464
3465         *ParsedFileName = uniRemainingPath;
3466
3467         *NameArray = pNameArray;
3468
3469         *VolumeCB = pVolumeCB;
3470
3471         //
3472         // Increment our reference on the volume
3473         //
3474
3475         InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
3476
3477         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
3478                       AFS_TRACE_LEVEL_VERBOSE,
3479                       "AFSParseName Increment2 count on global volume %08lX Cnt %d\n",
3480                       pVolumeCB,
3481                       pVolumeCB->VolumeReferenceCount);
3482
3483 try_exit:
3484
3485         if( NT_SUCCESS( ntStatus))
3486         {
3487
3488             if( *ParentDirectoryCB != NULL)
3489             {
3490
3491                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3492                               AFS_TRACE_LEVEL_VERBOSE,
3493                               "AFSParseName Count on %wZ DE %p Ccb %p Cnt %d\n",
3494                               &(*ParentDirectoryCB)->NameInformation.FileName,
3495                               *ParentDirectoryCB,
3496                               NULL,
3497                               (*ParentDirectoryCB)->OpenReferenceCount);
3498             }
3499         }
3500
3501         if( *VolumeCB != NULL)
3502         {
3503
3504             ASSERT( (*VolumeCB)->VolumeReferenceCount > 1);
3505         }
3506
3507         if( ntStatus != STATUS_SUCCESS)
3508         {
3509
3510             if( pNameArray != NULL)
3511             {
3512
3513                 AFSFreeNameArray( pNameArray);
3514             }
3515         }
3516     }
3517
3518     return ntStatus;
3519 }
3520
3521 NTSTATUS
3522 AFSCheckCellName( IN GUID *AuthGroup,
3523                   IN UNICODE_STRING *CellName,
3524                   OUT AFSDirectoryCB **ShareDirEntry)
3525 {
3526
3527     NTSTATUS ntStatus = STATUS_SUCCESS;
3528     UNICODE_STRING uniName;
3529     AFSFileID stFileID;
3530     AFSDirEnumEntry *pDirEnumEntry = NULL;
3531     AFSDeviceExt *pDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
3532     AFSDirHdr *pDirHdr = &AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr;
3533     AFSDirectoryCB *pDirNode = NULL;
3534     UNICODE_STRING uniDirName, uniTargetName;
3535     AFSVolumeCB *pVolumeCB = NULL;
3536
3537     __Enter
3538     {
3539
3540         //
3541         // Look for some default names we will not handle
3542         //
3543
3544         RtlInitUnicodeString( &uniName,
3545                               L"IPC$");
3546
3547         if( RtlCompareUnicodeString( &uniName,
3548                                      CellName,
3549                                      TRUE) == 0)
3550         {
3551
3552             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3553         }
3554
3555         RtlInitUnicodeString( &uniName,
3556                               L"wkssvc");
3557
3558         if( RtlCompareUnicodeString( &uniName,
3559                                      CellName,
3560                                      TRUE) == 0)
3561         {
3562
3563             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3564         }
3565
3566         RtlInitUnicodeString( &uniName,
3567                               L"srvsvc");
3568
3569         if( RtlCompareUnicodeString( &uniName,
3570                                      CellName,
3571                                      TRUE) == 0)
3572         {
3573
3574             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3575         }
3576
3577         RtlInitUnicodeString( &uniName,
3578                               L"PIPE");
3579
3580         if( RtlCompareUnicodeString( &uniName,
3581                                      CellName,
3582                                      TRUE) == 0)
3583         {
3584
3585             try_return( ntStatus = STATUS_NO_SUCH_FILE);
3586         }
3587
3588         //
3589         // OK, ask the CM about this component name
3590         //
3591
3592         stFileID = AFSGlobalRoot->ObjectInformation.FileId;
3593
3594         ntStatus = AFSEvaluateTargetByName( AuthGroup,
3595                                             &stFileID,
3596                                             CellName,
3597                                             &pDirEnumEntry);
3598
3599         if( !NT_SUCCESS( ntStatus))
3600         {
3601
3602             try_return( ntStatus);
3603         }
3604
3605         //
3606         // OK, we have a dir enum entry back so add it to the root node
3607         //
3608
3609         uniDirName = *CellName;
3610
3611         uniTargetName.Length = (USHORT)pDirEnumEntry->TargetNameLength;
3612         uniTargetName.MaximumLength = uniTargetName.Length;
3613         uniTargetName.Buffer = (WCHAR *)((char *)pDirEnumEntry + pDirEnumEntry->TargetNameOffset);
3614
3615         //
3616         // Is this entry a root volume entry?
3617         //
3618
3619         if( pDirEnumEntry->FileId.Cell != AFSGlobalRoot->ObjectInformation.FileId.Cell ||
3620             pDirEnumEntry->FileId.Volume != AFSGlobalRoot->ObjectInformation.FileId.Volume)
3621         {
3622
3623             //
3624             // We have the global root on entry so drop it now
3625             //
3626
3627             AFSReleaseResource( AFSGlobalRoot->VolumeLock);
3628
3629             //
3630             // Build the root volume entry
3631             //
3632
3633             ntStatus = AFSBuildRootVolume( AuthGroup,
3634                                            &pDirEnumEntry->FileId,
3635                                            &pVolumeCB);
3636
3637             if( !NT_SUCCESS( ntStatus))
3638             {
3639
3640                 //
3641                 // On failure this routine is expecting to hold the global root
3642                 //
3643
3644                 AFSAcquireShared( AFSGlobalRoot->VolumeLock,
3645                                   TRUE);
3646
3647                 try_return( ntStatus);
3648             }
3649
3650             *ShareDirEntry = pVolumeCB->DirectoryCB;
3651
3652             InterlockedIncrement( &pVolumeCB->DirectoryCB->OpenReferenceCount);
3653
3654             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3655                           AFS_TRACE_LEVEL_VERBOSE,
3656                           "AFSCheckCellName Increment1 count on %wZ DE %p Ccb %p Cnt %d\n",
3657                           &pVolumeCB->DirectoryCB->NameInformation.FileName,
3658                           pVolumeCB->DirectoryCB,
3659                           NULL,
3660                           pVolumeCB->DirectoryCB->OpenReferenceCount);
3661
3662             InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
3663         }
3664         else
3665         {
3666
3667             pDirNode = AFSInitDirEntry( &AFSGlobalRoot->ObjectInformation,
3668                                         &uniDirName,
3669                                         &uniTargetName,
3670                                         pDirEnumEntry,
3671                                         (ULONG)InterlockedIncrement( &pDirHdr->ContentIndex));
3672
3673             if( pDirNode == NULL)
3674             {
3675
3676                 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
3677             }
3678
3679             //
3680             // Init the short name if we have one
3681             //
3682
3683             if( pDirEnumEntry->ShortNameLength > 0)
3684             {
3685
3686                 pDirNode->NameInformation.ShortNameLength = pDirEnumEntry->ShortNameLength;
3687
3688                 RtlCopyMemory( pDirNode->NameInformation.ShortName,
3689                                pDirEnumEntry->ShortName,
3690                                pDirNode->NameInformation.ShortNameLength);
3691             }
3692
3693             AFSAcquireExcl( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
3694                             TRUE);
3695
3696             //
3697             // Insert the node into the name tree
3698             //
3699
3700             ASSERT( ExIsResourceAcquiredExclusiveLite( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock));
3701
3702             if( pDirHdr->CaseSensitiveTreeHead == NULL)
3703             {
3704
3705                 pDirHdr->CaseSensitiveTreeHead = pDirNode;
3706             }
3707             else
3708             {
3709
3710                 AFSInsertCaseSensitiveDirEntry( pDirHdr->CaseSensitiveTreeHead,
3711                                                 pDirNode);
3712             }
3713
3714             if( pDirHdr->CaseInsensitiveTreeHead == NULL)
3715             {
3716
3717                 pDirHdr->CaseInsensitiveTreeHead = pDirNode;
3718
3719                 SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_CASE_INSENSTIVE_LIST_HEAD);
3720             }
3721             else
3722             {
3723
3724                 AFSInsertCaseInsensitiveDirEntry( pDirHdr->CaseInsensitiveTreeHead,
3725                                                   pDirNode);
3726             }
3727
3728             if( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListHead == NULL)
3729             {
3730
3731                 AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListHead = pDirNode;
3732             }
3733             else
3734             {
3735
3736                 AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListTail->ListEntry.fLink = pDirNode;
3737
3738                 pDirNode->ListEntry.bLink = AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListTail;
3739             }
3740
3741             AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeListTail = pDirNode;
3742
3743             SetFlag( pDirNode->Flags, AFS_DIR_ENTRY_INSERTED_ENUM_LIST);
3744
3745             InterlockedIncrement( &AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeCount);
3746
3747             AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
3748                           AFS_TRACE_LEVEL_VERBOSE,
3749                           "AFSCheckCellName Adding entry %wZ Inc Count %d to parent FID %08lX-%08lX-%08lX-%08lX\n",
3750                               &pDirNode->NameInformation.FileName,
3751                               AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeCount,
3752                               AFSGlobalRoot->ObjectInformation.FileId.Cell,
3753                               AFSGlobalRoot->ObjectInformation.FileId.Volume,
3754                               AFSGlobalRoot->ObjectInformation.FileId.Vnode,
3755                               AFSGlobalRoot->ObjectInformation.FileId.Unique);
3756
3757             InterlockedIncrement( &pDirNode->OpenReferenceCount);
3758
3759             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3760                           AFS_TRACE_LEVEL_VERBOSE,
3761                           "AFSCheckCellName Increment2 count on %wZ DE %p Ccb %p Cnt %d\n",
3762                           &pDirNode->NameInformation.FileName,
3763                           pDirNode,
3764                           NULL,
3765                           pDirNode->OpenReferenceCount);
3766
3767             AFSReleaseResource( AFSGlobalRoot->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
3768
3769             //
3770             // Pass back the dir node
3771             //
3772
3773             *ShareDirEntry = pDirNode;
3774         }
3775
3776 try_exit:
3777
3778         if( pDirEnumEntry != NULL)
3779         {
3780
3781             AFSExFreePool( pDirEnumEntry);
3782         }
3783     }
3784
3785     return ntStatus;
3786 }
3787
3788 NTSTATUS
3789 AFSBuildMountPointTarget( IN GUID *AuthGroup,
3790                           IN AFSDirectoryCB  *DirectoryCB,
3791                           OUT AFSVolumeCB **TargetVolumeCB)
3792 {
3793
3794     NTSTATUS ntStatus = STATUS_SUCCESS;
3795     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
3796     AFSDirEnumEntry *pDirEntry = NULL;
3797     AFSDirectoryCB *pDirNode = NULL;
3798     UNICODE_STRING uniDirName, uniTargetName;
3799     ULONGLONG       ullIndex = 0;
3800     AFSVolumeCB *pVolumeCB = NULL;
3801     AFSFileID stTargetFileID;
3802
3803     __Enter
3804     {
3805
3806         //
3807         // Loop on each entry, building the chain until we encounter the final target
3808         //
3809
3810         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3811                       AFS_TRACE_LEVEL_VERBOSE_2,
3812                       "AFSBuildMountPointTarget Building target directory for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3813                       &DirectoryCB->NameInformation.FileName,
3814                       DirectoryCB->ObjectInformation->FileId.Cell,
3815                       DirectoryCB->ObjectInformation->FileId.Volume,
3816                       DirectoryCB->ObjectInformation->FileId.Vnode,
3817                       DirectoryCB->ObjectInformation->FileId.Unique);
3818
3819         //
3820         // Do we need to evaluate the node?
3821         //
3822
3823         //if( DirectoryCB->ObjectInformation->TargetFileId.Vnode == 0 &&
3824         //    DirectoryCB->ObjectInformation->TargetFileId.Unique == 0)
3825         {
3826
3827             //
3828             // Go evaluate the current target to get the target fid
3829             //
3830
3831             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3832                           AFS_TRACE_LEVEL_VERBOSE_2,
3833                           "AFSBuildMountPointTarget Evaluating target %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3834                               &DirectoryCB->NameInformation.FileName,
3835                               DirectoryCB->ObjectInformation->FileId.Cell,
3836                               DirectoryCB->ObjectInformation->FileId.Volume,
3837                               DirectoryCB->ObjectInformation->FileId.Vnode,
3838                               DirectoryCB->ObjectInformation->FileId.Unique);
3839
3840             ntStatus = AFSEvaluateTargetByID( DirectoryCB->ObjectInformation,
3841                                               AuthGroup,
3842                                               FALSE,
3843                                               &pDirEntry);
3844
3845             if( !NT_SUCCESS( ntStatus))
3846             {
3847
3848                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3849                               AFS_TRACE_LEVEL_ERROR,
3850                               "AFSBuildMountPointTarget Failed to evaluate target %wZ Status %08lX\n",
3851                               &DirectoryCB->NameInformation.FileName,
3852                               ntStatus);
3853                 try_return( ntStatus);
3854             }
3855
3856             if( pDirEntry->TargetFileId.Vnode == 0 &&
3857                 pDirEntry->TargetFileId.Unique == 0)
3858             {
3859
3860                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3861                               AFS_TRACE_LEVEL_ERROR,
3862                               "AFSBuildMountPointTarget Target %wZ FID %08lX-%08lX-%08lX-%08lX service returned zero FID\n",
3863                               &DirectoryCB->NameInformation.FileName,
3864                               DirectoryCB->ObjectInformation->FileId.Cell,
3865                               DirectoryCB->ObjectInformation->FileId.Volume,
3866                               DirectoryCB->ObjectInformation->FileId.Vnode,
3867                               DirectoryCB->ObjectInformation->FileId.Unique);
3868
3869                 try_return( ntStatus = STATUS_ACCESS_DENIED);
3870             }
3871
3872             AFSAcquireExcl( &DirectoryCB->NonPaged->Lock,
3873                             TRUE);
3874
3875             ntStatus = AFSUpdateTargetName( &DirectoryCB->NameInformation.TargetName,
3876                                             &DirectoryCB->Flags,
3877                                             (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
3878                                             (USHORT)pDirEntry->TargetNameLength);
3879
3880             if( !NT_SUCCESS( ntStatus))
3881             {
3882
3883                 AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
3884
3885                 try_return( ntStatus);
3886             }
3887
3888             AFSReleaseResource( &DirectoryCB->NonPaged->Lock);
3889
3890             DirectoryCB->ObjectInformation->TargetFileId = pDirEntry->TargetFileId;
3891         }
3892
3893         stTargetFileID = DirectoryCB->ObjectInformation->TargetFileId;
3894
3895         //
3896         // Try to locate this FID. First the volume then the
3897         // entry itself
3898         //
3899
3900         ullIndex = AFSCreateHighIndex( &stTargetFileID);
3901
3902         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
3903                       AFS_TRACE_LEVEL_VERBOSE,
3904                       "AFSBuildMountPointTarget Acquiring RDR VolumeTreeLock lock %08lX EXCL %08lX\n",
3905                       &pDevExt->Specific.RDR.VolumeTreeLock,
3906                       PsGetCurrentThread());
3907
3908         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock,
3909                           TRUE);
3910
3911         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3912                       AFS_TRACE_LEVEL_VERBOSE_2,
3913                       "AFSBuildMountPointTarget Locating volume for target %I64X\n",
3914                       ullIndex);
3915
3916         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
3917                                        ullIndex,
3918                                        (AFSBTreeEntry **)&pVolumeCB);
3919
3920         //
3921         // We can be processing a request for a target that is on a volume
3922         // we have never seen before.
3923         //
3924
3925         if( pVolumeCB == NULL)
3926         {
3927
3928             //
3929             // Locking is held correctly in init routine
3930             //
3931
3932             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3933
3934             //
3935             // Go init the root of the volume
3936             //
3937
3938             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3939                           AFS_TRACE_LEVEL_VERBOSE_2,
3940                           "AFSBuildMountPointTarget Initializing root for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
3941                           &DirectoryCB->NameInformation.FileName,
3942                           DirectoryCB->ObjectInformation->FileId.Cell,
3943                           DirectoryCB->ObjectInformation->FileId.Volume,
3944                           DirectoryCB->ObjectInformation->FileId.Vnode,
3945                           DirectoryCB->ObjectInformation->FileId.Unique);
3946
3947             ntStatus = AFSInitVolume( AuthGroup,
3948                                       &stTargetFileID,
3949                                       &pVolumeCB);
3950
3951             if( !NT_SUCCESS( ntStatus))
3952             {
3953
3954                 try_return( ntStatus);
3955             }
3956         }
3957         else
3958         {
3959
3960             //
3961             // Check if this volume has been deleted or taken offline
3962             //
3963
3964             if( BooleanFlagOn( pVolumeCB->Flags, AFS_VOLUME_FLAGS_OFFLINE))
3965             {
3966
3967                 AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3968
3969                 try_return( ntStatus = STATUS_FILE_IS_OFFLINE);
3970             }
3971
3972             //
3973             // Just to ensure that things don't get torn down AND we don't create a
3974             // deadlock with invalidation
3975             //
3976
3977             InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
3978
3979             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
3980
3981             AFSAcquireExcl( pVolumeCB->VolumeLock,
3982                             TRUE);
3983
3984             InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
3985         }
3986
3987         if( pVolumeCB->RootFcb == NULL)
3988         {
3989
3990             //
3991             // Initialize the root fcb for this volume
3992             //
3993
3994             ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
3995                                        pVolumeCB);
3996
3997             if( !NT_SUCCESS( ntStatus))
3998             {
3999
4000                 AFSReleaseResource( pVolumeCB->VolumeLock);
4001
4002                 try_return( ntStatus);
4003             }
4004
4005             //
4006             // Drop the lock acquired above
4007             //
4008
4009             AFSReleaseResource( &pVolumeCB->RootFcb->NPFcb->Resource);
4010         }
4011
4012         AFSConvertToShared( pVolumeCB->VolumeLock);
4013
4014         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4015                       AFS_TRACE_LEVEL_VERBOSE_2,
4016                       "AFSBuildMountPointTarget Evaluated target of %wZ FID %08lX-%08lX-%08lX-%08lX as root volume\n",
4017                       &pVolumeCB->DirectoryCB->NameInformation.FileName,
4018                       pVolumeCB->ObjectInformation.FileId.Cell,
4019                       pVolumeCB->ObjectInformation.FileId.Volume,
4020                       pVolumeCB->ObjectInformation.FileId.Vnode,
4021                       pVolumeCB->ObjectInformation.FileId.Unique);
4022
4023         InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
4024
4025         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
4026                       AFS_TRACE_LEVEL_VERBOSE,
4027                       "AFSBuildMountPointTarget Increment count on volume %08lX Cnt %d\n",
4028                       pVolumeCB,
4029                       pVolumeCB->VolumeReferenceCount);
4030
4031         *TargetVolumeCB = pVolumeCB;
4032
4033 try_exit:
4034
4035         if( pDirEntry)
4036         {
4037
4038             AFSExFreePool( pDirEntry);
4039         }
4040     }
4041
4042     return ntStatus;
4043 }
4044
4045 NTSTATUS
4046 AFSBuildRootVolume( IN GUID *AuthGroup,
4047                     IN AFSFileID *FileId,
4048                     OUT AFSVolumeCB **TargetVolumeCB)
4049 {
4050
4051     NTSTATUS ntStatus = STATUS_SUCCESS;
4052     AFSDeviceExt *pDevExt = (AFSDeviceExt *) AFSRDRDeviceObject->DeviceExtension;
4053     AFSDirectoryCB *pDirNode = NULL;
4054     UNICODE_STRING uniDirName, uniTargetName;
4055     ULONGLONG       ullIndex = 0;
4056     AFSVolumeCB *pVolumeCB = NULL;
4057
4058     __Enter
4059     {
4060
4061         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4062                       AFS_TRACE_LEVEL_VERBOSE_2,
4063                       "AFSBuildRootVolume Building target volume for FID %08lX-%08lX-%08lX-%08lX\n",
4064                       FileId->Cell,
4065                       FileId->Volume,
4066                       FileId->Vnode,
4067                       FileId->Unique);
4068
4069         ullIndex = AFSCreateHighIndex( FileId);
4070
4071         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
4072                       AFS_TRACE_LEVEL_VERBOSE,
4073                       "AFSBuildRootVolume Acquiring RDR VolumeTreeLock lock %08lX EXCL %08lX\n",
4074                       &pDevExt->Specific.RDR.VolumeTreeLock,
4075                       PsGetCurrentThread());
4076
4077         AFSAcquireShared( &pDevExt->Specific.RDR.VolumeTreeLock,
4078                           TRUE);
4079
4080         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4081                       AFS_TRACE_LEVEL_VERBOSE_2,
4082                       "AFSBuildRootVolume Locating volume for target %I64X\n",
4083                       ullIndex);
4084
4085         ntStatus = AFSLocateHashEntry( pDevExt->Specific.RDR.VolumeTree.TreeHead,
4086                                        ullIndex,
4087                                        (AFSBTreeEntry **)&pVolumeCB);
4088
4089         //
4090         // We can be processing a request for a target that is on a volume
4091         // we have never seen before.
4092         //
4093
4094         if( pVolumeCB == NULL)
4095         {
4096
4097             //
4098             // Locking is held correctly in init routine
4099             //
4100
4101             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
4102
4103             //
4104             // Go init the root of the volume
4105             //
4106
4107             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4108                           AFS_TRACE_LEVEL_VERBOSE_2,
4109                           "AFSBuildRootVolume Initializing root for FID %08lX-%08lX-%08lX-%08lX\n",
4110                           FileId->Cell,
4111                           FileId->Volume,
4112                           FileId->Vnode,
4113                           FileId->Unique);
4114
4115             ntStatus = AFSInitVolume( AuthGroup,
4116                                       FileId,
4117                                       &pVolumeCB);
4118
4119             if( !NT_SUCCESS( ntStatus))
4120             {
4121
4122                 try_return( ntStatus);
4123             }
4124         }
4125         else
4126         {
4127
4128             //
4129             // Just to ensure that things don't get torn down AND we don't create a
4130             // deadlock with invalidation
4131             //
4132
4133             InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
4134
4135             AFSReleaseResource( &pDevExt->Specific.RDR.VolumeTreeLock);
4136
4137             AFSAcquireExcl( pVolumeCB->VolumeLock,
4138                             TRUE);
4139
4140             InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
4141         }
4142
4143
4144         if( pVolumeCB->RootFcb == NULL)
4145         {
4146
4147             //
4148             // Initialize the root fcb for this volume
4149             //
4150
4151             ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
4152                                        pVolumeCB);
4153
4154             if( !NT_SUCCESS( ntStatus))
4155             {
4156
4157                 AFSReleaseResource( pVolumeCB->VolumeLock);
4158
4159                 try_return( ntStatus);
4160             }
4161
4162             //
4163             // Drop the lock acquired above
4164             //
4165
4166             AFSReleaseResource( &pVolumeCB->RootFcb->NPFcb->Resource);
4167         }
4168
4169         AFSConvertToShared( pVolumeCB->VolumeLock);
4170
4171         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4172                       AFS_TRACE_LEVEL_VERBOSE_2,
4173                       "AFSBuildRootVolume Evaluated target of %wZ FID %08lX-%08lX-%08lX-%08lX as root volume\n",
4174                       &pVolumeCB->DirectoryCB->NameInformation.FileName,
4175                       pVolumeCB->ObjectInformation.FileId.Cell,
4176                       pVolumeCB->ObjectInformation.FileId.Volume,
4177                       pVolumeCB->ObjectInformation.FileId.Vnode,
4178                       pVolumeCB->ObjectInformation.FileId.Unique);
4179
4180         InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
4181
4182         AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
4183                       AFS_TRACE_LEVEL_VERBOSE,
4184                       "AFSBuildRootVolume Increment count on volume %08lX Cnt %d\n",
4185                       pVolumeCB,
4186                       pVolumeCB->VolumeReferenceCount);
4187
4188         *TargetVolumeCB = pVolumeCB;
4189
4190 try_exit:
4191
4192         NOTHING;
4193     }
4194
4195     return ntStatus;
4196 }
4197
4198 NTSTATUS
4199 AFSProcessDFSLink( IN AFSDirectoryCB *DirEntry,
4200                    IN PFILE_OBJECT FileObject,
4201                    IN UNICODE_STRING *RemainingPath)
4202 {
4203
4204     NTSTATUS ntStatus = STATUS_INVALID_DEVICE_REQUEST;
4205     UNICODE_STRING uniReparseName;
4206     UNICODE_STRING uniMUPDeviceName;
4207     AFSDirEnumEntry *pDirEntry = NULL;
4208     GUID *pAuthGroup = NULL;
4209
4210     __Enter
4211     {
4212
4213         //
4214         // Build up the name to reparse
4215         //
4216
4217         RtlInitUnicodeString( &uniMUPDeviceName,
4218                               L"\\Device\\MUP");
4219
4220         uniReparseName.Length = 0;
4221         uniReparseName.Buffer = NULL;
4222
4223         //
4224         // Be sure we have a target name
4225         //
4226
4227         if( DirEntry->NameInformation.TargetName.Length == 0)
4228         {
4229
4230             if( DirEntry->ObjectInformation->Fcb != NULL)
4231             {
4232                 pAuthGroup = &DirEntry->ObjectInformation->Fcb->AuthGroup;
4233             }
4234
4235             ntStatus = AFSEvaluateTargetByID( DirEntry->ObjectInformation,
4236                                               pAuthGroup,
4237                                               FALSE,
4238                                               &pDirEntry);
4239
4240             if( !NT_SUCCESS( ntStatus) ||
4241                 pDirEntry->TargetNameLength == 0)
4242             {
4243
4244                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4245                               AFS_TRACE_LEVEL_ERROR,
4246                               "AFSProcessDFSLink EvaluateTargetByID failed for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4247                               &DirEntry->NameInformation.FileName,
4248                               DirEntry->ObjectInformation->FileId.Cell,
4249                               DirEntry->ObjectInformation->FileId.Volume,
4250                               DirEntry->ObjectInformation->FileId.Vnode,
4251                               DirEntry->ObjectInformation->FileId.Unique,
4252                               ntStatus);
4253
4254                 if( NT_SUCCESS( ntStatus))
4255                 {
4256
4257                     ntStatus = STATUS_ACCESS_DENIED;
4258                 }
4259
4260                 try_return( ntStatus);
4261             }
4262
4263             //
4264             // Update the target name
4265             //
4266
4267             AFSAcquireExcl( &DirEntry->NonPaged->Lock,
4268                             TRUE);
4269
4270             ntStatus = AFSUpdateTargetName( &DirEntry->NameInformation.TargetName,
4271                                             &DirEntry->Flags,
4272                                             (WCHAR *)((char *)pDirEntry + pDirEntry->TargetNameOffset),
4273                                             (USHORT)pDirEntry->TargetNameLength);
4274
4275             if( !NT_SUCCESS( ntStatus))
4276             {
4277
4278                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4279                               AFS_TRACE_LEVEL_ERROR,
4280                               "AFSProcessDFSLink UpdateTargetName failed for Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4281                               &DirEntry->NameInformation.FileName,
4282                               DirEntry->ObjectInformation->FileId.Cell,
4283                               DirEntry->ObjectInformation->FileId.Volume,
4284                               DirEntry->ObjectInformation->FileId.Vnode,
4285                               DirEntry->ObjectInformation->FileId.Unique,
4286                               ntStatus);
4287
4288                 AFSReleaseResource( &DirEntry->NonPaged->Lock);
4289
4290                 try_return( ntStatus);
4291             }
4292
4293             AFSConvertToShared( &DirEntry->NonPaged->Lock);
4294         }
4295         else
4296         {
4297             AFSAcquireShared( &DirEntry->NonPaged->Lock,
4298                               TRUE);
4299         }
4300
4301         uniReparseName.MaximumLength = uniMUPDeviceName.Length +
4302                                                    sizeof( WCHAR) +
4303                                                    DirEntry->NameInformation.TargetName.Length +
4304                                                    sizeof( WCHAR);
4305
4306         if( RemainingPath != NULL &&
4307             RemainingPath->Length > 0)
4308         {
4309
4310             uniReparseName.MaximumLength += RemainingPath->Length;
4311         }
4312
4313         //
4314         // Allocate the reparse buffer
4315         //
4316
4317         uniReparseName.Buffer = (WCHAR *)AFSExAllocatePoolWithTag( PagedPool,
4318                                                                    uniReparseName.MaximumLength,
4319                                                                    AFS_REPARSE_NAME_TAG);
4320
4321         if( uniReparseName.Buffer == NULL)
4322         {
4323
4324             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4325                           AFS_TRACE_LEVEL_ERROR,
4326                           "AFSProcessDFSLink uniReparseName.Buffer == NULL Fcb %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
4327                           &DirEntry->NameInformation.FileName,
4328                           DirEntry->ObjectInformation->FileId.Cell,
4329                           DirEntry->ObjectInformation->FileId.Volume,
4330                           DirEntry->ObjectInformation->FileId.Vnode,
4331                           DirEntry->ObjectInformation->FileId.Unique,
4332                           STATUS_INSUFFICIENT_RESOURCES);
4333
4334             AFSReleaseResource( &DirEntry->NonPaged->Lock);
4335
4336             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
4337         }
4338
4339         //
4340         // Start building the name
4341         //
4342
4343         RtlCopyMemory( uniReparseName.Buffer,
4344                        uniMUPDeviceName.Buffer,
4345                        uniMUPDeviceName.Length);
4346
4347         uniReparseName.Length = uniMUPDeviceName.Length;
4348
4349         if( DirEntry->NameInformation.TargetName.Buffer[ 0] != L'\\')
4350         {
4351
4352             uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)] = L'\\';
4353
4354             uniReparseName.Length += sizeof( WCHAR);
4355         }
4356
4357         RtlCopyMemory( &uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)],
4358                        DirEntry->NameInformation.TargetName.Buffer,
4359                        DirEntry->NameInformation.TargetName.Length);
4360
4361         uniReparseName.Length += DirEntry->NameInformation.TargetName.Length;
4362
4363         AFSReleaseResource( &DirEntry->NonPaged->Lock);
4364
4365         if( RemainingPath != NULL &&
4366             RemainingPath->Length > 0)
4367         {
4368
4369             if( uniReparseName.Buffer[ (uniReparseName.Length/sizeof( WCHAR)) - 1] != L'\\' &&
4370                 RemainingPath->Buffer[ 0] != L'\\')
4371             {
4372
4373                 uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)] = L'\\';
4374
4375                 uniReparseName.Length += sizeof( WCHAR);
4376             }
4377
4378             RtlCopyMemory( &uniReparseName.Buffer[ uniReparseName.Length/sizeof( WCHAR)],
4379                            RemainingPath->Buffer,
4380                            RemainingPath->Length);
4381
4382             uniReparseName.Length += RemainingPath->Length;
4383         }
4384
4385         //
4386         // Update the name in the file object
4387         //
4388
4389         if( FileObject->FileName.Buffer != NULL)
4390         {
4391
4392             AFSExFreePool( FileObject->FileName.Buffer);
4393         }
4394
4395         FileObject->FileName = uniReparseName;
4396
4397         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
4398                       AFS_TRACE_LEVEL_VERBOSE,
4399                       "AFSProcessDFSLink Reparsing access to Fcb %wZ FID %08lX-%08lX-%08lX-%08lX to %wZ\n",
4400                       &DirEntry->NameInformation.FileName,
4401                       DirEntry->ObjectInformation->FileId.Cell,
4402                       DirEntry->ObjectInformation->FileId.Volume,
4403                       DirEntry->ObjectInformation->FileId.Vnode,
4404                       DirEntry->ObjectInformation->FileId.Unique,
4405                       &uniReparseName);
4406
4407         //
4408         // Return status reparse ...
4409         //
4410
4411         ntStatus = STATUS_REPARSE;
4412
4413 try_exit:
4414
4415         if ( pDirEntry)
4416         {
4417
4418             AFSExFreePool( pDirEntry);
4419         }
4420     }
4421
4422     return ntStatus;
4423 }