src/WINNT/afsrdr/kernel/lib/AFSCreate.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: AFSCreate.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 //
  42 // Function: AFSCreate
  43 //
  44 // Description:
  45 //
  46 //      This function is the dispatch handler for the IRP_MJ_CREATE requests. It makes the determination to
  47 //      which interface this request is destined.
  48 //
  49 // Return:
  50 //
  51 //      A status is returned for the function. The Irp completion processing is handled in the specific
  52 //      interface handler.
  53 //
  54
  55 NTSTATUS
  56 AFSCreate( IN PDEVICE_OBJECT LibDeviceObject,
  57            IN PIRP Irp)
  58 {
  59
  60     NTSTATUS ntStatus = STATUS_SUCCESS;
  61     IO_STACK_LOCATION  *pIrpSp;
  62     FILE_OBJECT        *pFileObject = NULL;
  63
  64     __try
  65     {
  66
  67         pIrpSp = IoGetCurrentIrpStackLocation( Irp);
  68         pFileObject = pIrpSp->FileObject;
  69
  70         if( pFileObject == NULL ||
  71             pFileObject->FileName.Buffer == NULL)
  72         {
  73
  74             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
  75                           AFS_TRACE_LEVEL_VERBOSE,
  76                           "AFSCreate (%08lX) Processing control device open request\n",
  77                           Irp);
  78
  79             ntStatus = AFSControlDeviceCreate( Irp);
  80
  81             try_return( ntStatus);
  82         }
  83
  84         if( AFSRDRDeviceObject == NULL)
  85         {
  86
  87             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
  88                           AFS_TRACE_LEVEL_VERBOSE,
  89                           "AFSCreate (%08lX) Invalid request to open before library is initialized\n",
  90                           Irp);
  91
  92             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
  93         }
  94
  95         ntStatus = AFSCommonCreate( AFSRDRDeviceObject,
  96                                     Irp);
  97
  98 try_exit:
  99
 100         NOTHING;
 101     }
 102     __except( AFSExceptionFilter( GetExceptionCode(), GetExceptionInformation()) )
 103     {
 104
 105         AFSDbgLogMsg( 0,
 106                       0,
 107                       "EXCEPTION - AFSCreate\n");
 108
 109         ntStatus = STATUS_ACCESS_DENIED;
 110     }
 111
 112     //
 113     // Complete the request
 114     //
 115
 116     AFSCompleteRequest( Irp,
 117                           ntStatus);
 118
 119     return ntStatus;
 120 }
 121
 122 NTSTATUS
 123 AFSCommonCreate( IN PDEVICE_OBJECT DeviceObject,
 124                  IN PIRP Irp)
 125 {
 126
 127     NTSTATUS            ntStatus = STATUS_SUCCESS;
 128     UNICODE_STRING      uniFileName;
 129     ULONG               ulCreateDisposition = 0;
 130     ULONG               ulOptions = 0;
 131     BOOLEAN             bNoIntermediateBuffering = FALSE;
 132     FILE_OBJECT        *pFileObject = NULL;
 133     IO_STACK_LOCATION  *pIrpSp;
 134     AFSFcb             *pFcb = NULL;
 135     AFSCcb             *pCcb = NULL;
 136     AFSDeviceExt       *pDeviceExt = NULL;
 137     BOOLEAN             bOpenTargetDirectory = FALSE, bReleaseVolume = FALSE;
 138     PACCESS_MASK        pDesiredAccess = NULL;
 139     UNICODE_STRING      uniComponentName, uniPathName, uniRootFileName, uniParsedFileName;
 140     UNICODE_STRING      uniSubstitutedPathName;
 141     UNICODE_STRING      uniRelativeName;
 142     AFSNameArrayHdr    *pNameArray = NULL;
 143     AFSVolumeCB        *pVolumeCB = NULL;
 144     AFSDirectoryCB     *pParentDirectoryCB = NULL, *pDirectoryCB = NULL;
 145     ULONG               ulParseFlags = 0;
 146     GUID                stAuthGroup;
 147     ULONG               ulNameProcessingFlags = 0;
 148     BOOLEAN             bOpenedReparsePoint = FALSE;
 149     LONG                lCount;
 150
 151     __Enter
 152     {
 153
 154         pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 155         pDeviceExt = (AFSDeviceExt *)DeviceObject->DeviceExtension;
 156         ulCreateDisposition = (pIrpSp->Parameters.Create.Options >> 24) & 0x000000ff;
 157         ulOptions = pIrpSp->Parameters.Create.Options;
 158         bNoIntermediateBuffering = BooleanFlagOn( ulOptions, FILE_NO_INTERMEDIATE_BUFFERING);
 159         bOpenTargetDirectory = BooleanFlagOn( pIrpSp->Flags, SL_OPEN_TARGET_DIRECTORY);
 160         pFileObject = pIrpSp->FileObject;
 161         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
 162
 163         uniFileName.Length = uniFileName.MaximumLength = 0;
 164         uniFileName.Buffer = NULL;
 165
 166         uniRootFileName.Length = uniRootFileName.MaximumLength = 0;
 167         uniRootFileName.Buffer = NULL;
 168
 169         uniParsedFileName.Length = uniParsedFileName.MaximumLength = 0;
 170         uniParsedFileName.Buffer = NULL;
 171
 172         uniSubstitutedPathName.Buffer = NULL;
 173         uniSubstitutedPathName.Length = 0;
 174
 175         uniRelativeName.Buffer = NULL;
 176         uniRelativeName.Length = 0;
 177
 178         if( AFSGlobalRoot == NULL)
 179         {
 180             try_return( ntStatus = STATUS_DEVICE_NOT_READY);
 181         }
 182
 183         RtlZeroMemory( &stAuthGroup,
 184                        sizeof( GUID));
 185
 186         AFSRetrieveAuthGroupFnc( (ULONGLONG)PsGetCurrentProcessId(),
 187                                  (ULONGLONG)PsGetCurrentThreadId(),
 188                                   &stAuthGroup);
 189
 190         //
 191         // If we are in shutdown mode then fail the request
 192         //
 193
 194         if( BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
 195         {
 196
 197             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 198                           AFS_TRACE_LEVEL_WARNING,
 199                           "AFSCommonCreate (%08lX) Open request after shutdown\n",
 200                           Irp);
 201
 202             try_return( ntStatus = STATUS_TOO_LATE);
 203         }
 204
 205         if( !BooleanFlagOn( AFSGlobalRoot->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
 206         {
 207
 208             ntStatus = AFSEnumerateGlobalRoot( &stAuthGroup);
 209
 210             if( !NT_SUCCESS( ntStatus))
 211             {
 212
 213                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 214                               AFS_TRACE_LEVEL_ERROR,
 215                               "AFSCommonCreate Failed to enumerate global root Status %08lX\n",
 216                               ntStatus);
 217
 218                 try_return( ntStatus);
 219             }
 220         }
 221
 222         //
 223         // Go and parse the name for processing.
 224         // If ulParseFlags is returned with AFS_PARSE_FLAG_FREE_FILE_BUFFER set,
 225         // then we are responsible for releasing the uniRootFileName.Buffer.
 226         //
 227
 228         ntStatus = AFSParseName( Irp,
 229                                  &stAuthGroup,
 230                                  &uniFileName,
 231                                  &uniParsedFileName,
 232                                  &uniRootFileName,
 233                                  &ulParseFlags,
 234                                  &pVolumeCB,
 235                                  &pParentDirectoryCB,
 236                                  &pNameArray);
 237
 238         if( !NT_SUCCESS( ntStatus))
 239         {
 240
 241             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 242                           uniFileName.Length > 0 ? AFS_TRACE_LEVEL_ERROR : AFS_TRACE_LEVEL_VERBOSE,
 243                           "AFSCommonCreate (%08lX) Failed to parse name \"%wZ\" Status %08lX\n",
 244                           Irp,
 245                           &uniFileName,
 246                           ntStatus);
 247
 248             try_return( ntStatus);
 249         }
 250
 251         //
 252         // Check for STATUS_REPARSE
 253         //
 254
 255         if( ntStatus == STATUS_REPARSE)
 256         {
 257
 258             //
 259             // Update the information and return
 260             //
 261
 262             Irp->IoStatus.Information = IO_REPARSE;
 263
 264             try_return( ntStatus);
 265         }
 266
 267         //
 268         // If the returned volume cb is NULL then we are dealing with the \\Server\GlobalRoot
 269         // name
 270         //
 271
 272         if( pVolumeCB == NULL)
 273         {
 274
 275             //
 276             // Remove any leading or trailing slashes
 277             //
 278
 279             if( uniFileName.Length >= sizeof( WCHAR) &&
 280                 uniFileName.Buffer[ (uniFileName.Length/sizeof( WCHAR)) - 1] == L'\\')
 281             {
 282
 283                 uniFileName.Length -= sizeof( WCHAR);
 284             }
 285
 286             if( uniFileName.Length >= sizeof( WCHAR) &&
 287                 uniFileName.Buffer[ 0] == L'\\')
 288             {
 289
 290                 uniFileName.Buffer = &uniFileName.Buffer[ 1];
 291
 292                 uniFileName.Length -= sizeof( WCHAR);
 293             }
 294
 295             //
 296             // If there is a remaining portion returned for this request then
 297             // check if it is for the PIOCtl interface
 298             //
 299
 300             if( uniFileName.Length > 0)
 301             {
 302
 303                 //
 304                 // We don't accept any other opens off of the AFS Root
 305                 //
 306
 307                 ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
 308
 309                 //
 310                 // If this is an open on "_._AFS_IOCTL_._" then perform handling on it accordingly
 311                 //
 312
 313                 if( RtlCompareUnicodeString( &AFSPIOCtlName,
 314                                              &uniFileName,
 315                                              TRUE) == 0)
 316                 {
 317
 318                     ntStatus = AFSOpenIOCtlFcb( Irp,
 319                                                 &stAuthGroup,
 320                                                 AFSGlobalRoot->DirectoryCB,
 321                                                 &pFcb,
 322                                                 &pCcb);
 323
 324                     if( !NT_SUCCESS( ntStatus))
 325                     {
 326
 327                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 328                                       AFS_TRACE_LEVEL_ERROR,
 329                                       "AFSCommonCreate Failed to open root IOCtl Fcb Status %08lX\n",
 330                                       ntStatus);
 331                     }
 332                 }
 333                 else if( pParentDirectoryCB != NULL &&
 334                          pParentDirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SPECIAL_SHARE_NAME)
 335                 {
 336
 337                     ntStatus = AFSOpenSpecialShareFcb( Irp,
 338                                                        &stAuthGroup,
 339                                                        pParentDirectoryCB,
 340                                                        &pFcb,
 341                                                        &pCcb);
 342
 343                     if( !NT_SUCCESS( ntStatus))
 344                     {
 345
 346                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 347                                       AFS_TRACE_LEVEL_ERROR,
 348                                       "AFSCommonCreate Failed to open special share Fcb Status %08lX\n",
 349                                       ntStatus);
 350                     }
 351                 }
 352
 353                 try_return( ntStatus);
 354             }
 355
 356             ntStatus = AFSOpenAFSRoot( Irp,
 357                                        &pFcb,
 358                                        &pCcb);
 359
 360             if( !NT_SUCCESS( ntStatus))
 361             {
 362
 363                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 364                               AFS_TRACE_LEVEL_ERROR,
 365                               "AFSCommonCreate Failed to open root Status %08lX\n",
 366                               ntStatus);
 367
 368                 lCount = InterlockedDecrement( &AFSGlobalRoot->DirectoryCB->OpenReferenceCount);
 369
 370                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 371                               AFS_TRACE_LEVEL_VERBOSE,
 372                               "AFSCommonCreate Decrement1 count on &wZ DE %p Ccb %p Cnt %d\n",
 373                               &AFSGlobalRoot->DirectoryCB->NameInformation.FileName,
 374                               AFSGlobalRoot->DirectoryCB,
 375                               NULL,
 376                               lCount);
 377             }
 378
 379             try_return( ntStatus);
 380         }
 381
 382         //
 383         // We have a reference on the root volume
 384         //
 385
 386         bReleaseVolume = TRUE;
 387
 388         //
 389         // Attempt to locate the node in the name tree if this is not a target
 390         // open and the target is not the root
 391         //
 392
 393         uniComponentName.Length = 0;
 394         uniComponentName.Buffer = NULL;
 395
 396         if( uniFileName.Length > sizeof( WCHAR) ||
 397             uniFileName.Buffer[ 0] != L'\\')
 398         {
 399
 400             if( !AFSValidNameFormat( &uniFileName))
 401             {
 402
 403                 ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
 404
 405                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 406                               AFS_TRACE_LEVEL_VERBOSE,
 407                               "AFSCommonCreate (%08lX) Invalid name %wZ Status %08lX\n",
 408                               Irp,
 409                               &uniFileName,
 410                               ntStatus);
 411
 412                 try_return( ntStatus);
 413             }
 414
 415             //
 416             // Opening a reparse point directly?
 417             //
 418
 419             ulNameProcessingFlags = AFS_LOCATE_FLAGS_SUBSTITUTE_NAME;
 420
 421             if( BooleanFlagOn( ulOptions, FILE_OPEN_REPARSE_POINT))
 422             {
 423                 ulNameProcessingFlags |= (AFS_LOCATE_FLAGS_NO_MP_TARGET_EVAL |
 424                                           AFS_LOCATE_FLAGS_NO_SL_TARGET_EVAL |
 425                                           AFS_LOCATE_FLAGS_NO_DFS_LINK_EVAL);
 426             }
 427
 428             uniSubstitutedPathName = uniRootFileName;
 429
 430             ntStatus = AFSLocateNameEntry( &stAuthGroup,
 431                                            pFileObject,
 432                                            &uniRootFileName,
 433                                            &uniParsedFileName,
 434                                            pNameArray,
 435                                            ulNameProcessingFlags,
 436                                            &pVolumeCB,
 437                                            &pParentDirectoryCB,
 438                                            &pDirectoryCB,
 439                                            &uniComponentName);
 440
 441             if( !NT_SUCCESS( ntStatus) &&
 442                 ntStatus != STATUS_OBJECT_NAME_NOT_FOUND)
 443             {
 444
 445                 if ( uniSubstitutedPathName.Buffer == uniRootFileName.Buffer)
 446                 {
 447                     uniSubstitutedPathName.Buffer = NULL;
 448                 }
 449
 450                 //
 451                 // The routine above released the root while walking the
 452                 // branch
 453                 //
 454
 455                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 456                               AFS_TRACE_LEVEL_VERBOSE,
 457                               "AFSCommonCreate (%08lX) Failed to locate name entry for %wZ Status %08lX\n",
 458                               Irp,
 459                               &uniFileName,
 460                               ntStatus);
 461
 462                 //
 463                 // We released any root volume locks in the above on failure
 464                 //
 465
 466                 bReleaseVolume = FALSE;
 467
 468                 try_return( ntStatus);
 469             }
 470
 471             //
 472             // Check for STATUS_REPARSE
 473             //
 474
 475             if( ntStatus == STATUS_REPARSE)
 476             {
 477
 478                 uniSubstitutedPathName.Buffer = NULL;
 479
 480                 //
 481                 // Update the information and return
 482                 //
 483
 484                 Irp->IoStatus.Information = IO_REPARSE;
 485
 486                 //
 487                 // We released the volume lock above
 488                 //
 489
 490                 bReleaseVolume = FALSE;
 491
 492                 try_return( ntStatus);
 493             }
 494
 495             //
 496             // If we re-allocated the name, then update our substitute name
 497             //
 498
 499             if( uniSubstitutedPathName.Buffer != uniRootFileName.Buffer)
 500             {
 501
 502                 uniSubstitutedPathName = uniRootFileName;
 503             }
 504             else
 505             {
 506
 507                 uniSubstitutedPathName.Buffer = NULL;
 508             }
 509
 510             //
 511             // Check for a symlink access
 512             //
 513
 514             if( ntStatus == STATUS_OBJECT_NAME_NOT_FOUND &&
 515                 pParentDirectoryCB != NULL)
 516             {
 517
 518                 UNICODE_STRING uniFinalComponent;
 519
 520                 uniFinalComponent.Length = 0;
 521                 uniFinalComponent.MaximumLength = 0;
 522                 uniFinalComponent.Buffer = NULL;
 523
 524                 AFSRetrieveFinalComponent( &uniFileName,
 525                                            &uniFinalComponent);
 526
 527                 ntStatus = AFSCheckSymlinkAccess( pParentDirectoryCB,
 528                                                   &uniFinalComponent);
 529
 530                 if( !NT_SUCCESS( ntStatus) &&
 531                     ntStatus != STATUS_OBJECT_NAME_NOT_FOUND)
 532                 {
 533
 534                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 535                                   AFS_TRACE_LEVEL_VERBOSE,
 536                                   "AFSCommonCreate (%08lX) Failing access to symlink %wZ Status %08lX\n",
 537                                   Irp,
 538                                   &uniFileName,
 539                                   ntStatus);
 540
 541                     try_return( ntStatus);
 542                 }
 543             }
 544         }
 545
 546         //
 547         // If we have no parent then this is a root open, be sure there is a directory entry
 548         // for the root
 549         //
 550
 551         else if( pParentDirectoryCB == NULL &&
 552                  pDirectoryCB == NULL)
 553         {
 554
 555             pDirectoryCB = pVolumeCB->DirectoryCB;
 556         }
 557
 558         if( bOpenTargetDirectory)
 559         {
 560
 561             //
 562             // If we have a directory cb for the entry then dereference it and reference the parent
 563             //
 564
 565             if( pDirectoryCB != NULL)
 566             {
 567
 568                 //
 569                 // Perform in this order to prevent thrashing
 570                 //
 571
 572                 lCount = InterlockedIncrement( &pParentDirectoryCB->OpenReferenceCount);
 573
 574                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 575                               AFS_TRACE_LEVEL_VERBOSE,
 576                               "AFSCommonCreate Increment1 count on %wZ DE %p Ccb %p Cnt %d\n",
 577                               &pParentDirectoryCB->NameInformation.FileName,
 578                               pParentDirectoryCB,
 579                               NULL,
 580                               lCount);
 581
 582                 //
 583                 // Do NOT decrement the reference count on the pDirectoryCB yet.
 584                 // The BackupEntry below might drop the count to zero leaving
 585                 // the entry subject to being deleted and we need some of the
 586                 // contents during later processing
 587                 //
 588
 589                 AFSBackupEntry( pNameArray);
 590             }
 591
 592             //
 593             // OK, open the target directory
 594             //
 595
 596             if( uniComponentName.Length == 0)
 597             {
 598                 AFSRetrieveFinalComponent( &uniFileName,
 599                                            &uniComponentName);
 600             }
 601
 602             ntStatus = AFSOpenTargetDirectory( Irp,
 603                                                pVolumeCB,
 604                                                pParentDirectoryCB,
 605                                                pDirectoryCB,
 606                                                &uniComponentName,
 607                                                &pFcb,
 608                                                &pCcb);
 609             if( pDirectoryCB != NULL)
 610             {
 611                 //
 612                 // It is now safe to drop the Reference Count
 613                 //
 614                 lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 615
 616                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 617                               AFS_TRACE_LEVEL_VERBOSE,
 618                               "AFSCommonCreate Decrement2 count on %wZ DE %p Ccb %p Cnt %d\n",
 619                               &pDirectoryCB->NameInformation.FileName,
 620                               pDirectoryCB,
 621                               NULL,
 622                               lCount);
 623             }
 624
 625             if( !NT_SUCCESS( ntStatus))
 626             {
 627
 628                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 629                               AFS_TRACE_LEVEL_ERROR,
 630                               "AFSCommonCreate Failed to open target directory %wZ Status %08lX\n",
 631                               &pParentDirectoryCB->NameInformation.FileName,
 632                               ntStatus);
 633
 634                 //
 635                 // Decrement the reference on the parent
 636                 //
 637
 638                 lCount = InterlockedDecrement( &pParentDirectoryCB->OpenReferenceCount);
 639
 640                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 641                               AFS_TRACE_LEVEL_VERBOSE,
 642                               "AFSCommonCreate Decrement3 count on %wZ DE %p Ccb %p Cnt %d\n",
 643                               &pParentDirectoryCB->NameInformation.FileName,
 644                               pParentDirectoryCB,
 645                               NULL,
 646                               lCount);
 647             }
 648
 649             try_return( ntStatus);
 650         }
 651
 652         if ( BooleanFlagOn( ulOptions, FILE_OPEN_REPARSE_POINT))
 653         {
 654
 655             if( pDirectoryCB == NULL ||
 656                 !BooleanFlagOn( pDirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
 657             {
 658                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 659                               AFS_TRACE_LEVEL_VERBOSE,
 660                               "AFSCommonCreate (%08lX) Reparse open request but attribute not set for %wZ DirCB %p Type %08lX\n",
 661                               Irp,
 662                               &uniFileName,
 663                               pDirectoryCB,
 664                               pDirectoryCB ? pDirectoryCB->ObjectInformation->FileType : 0);
 665             }
 666             else
 667             {
 668                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 669                               AFS_TRACE_LEVEL_VERBOSE,
 670                               "AFSCommonCreate (%08lX) Opening as reparse point %wZ Type %08lX\n",
 671                               Irp,
 672                               &uniFileName,
 673                               pDirectoryCB->ObjectInformation->FileType);
 674
 675                 bOpenedReparsePoint = TRUE;
 676             }
 677         }
 678
 679         //
 680         // Based on the options passed in, process the file accordingly.
 681         //
 682
 683         if( ulCreateDisposition == FILE_CREATE ||
 684             ( ( ulCreateDisposition == FILE_OPEN_IF ||
 685                 ulCreateDisposition == FILE_OVERWRITE_IF) &&
 686               pDirectoryCB == NULL))
 687         {
 688
 689             if( uniComponentName.Length == 0 ||
 690                 pDirectoryCB != NULL)
 691             {
 692
 693                 //
 694                 // We traversed the entire path so we found each entry,
 695                 // fail with collision
 696                 //
 697
 698                 if( pDirectoryCB != NULL)
 699                 {
 700
 701                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 702                                   AFS_TRACE_LEVEL_VERBOSE,
 703                                   "AFSCommonCreate Object name collision on create of %wZ Status %08lX\n",
 704                                   &pDirectoryCB->NameInformation.FileName,
 705                                   ntStatus);
 706
 707                     lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 708
 709                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 710                                   AFS_TRACE_LEVEL_VERBOSE,
 711                                   "AFSCommonCreate Decrement4 count on %wZ DE %p Ccb %p Cnt %d\n",
 712                                   &pDirectoryCB->NameInformation.FileName,
 713                                   pDirectoryCB,
 714                                   NULL,
 715                                   lCount);
 716                 }
 717                 else
 718                 {
 719
 720                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 721                                   AFS_TRACE_LEVEL_VERBOSE,
 722                                   "AFSCommonCreate Object name collision on create Status %08lX\n",
 723                                   ntStatus);
 724
 725                     InterlockedDecrement( &pParentDirectoryCB->OpenReferenceCount);
 726
 727                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 728                                   AFS_TRACE_LEVEL_VERBOSE,
 729                                   "AFSCommonCreate Decrement5 count on %wZ DE %p Ccb %p Cnt %d\n",
 730                                   &pParentDirectoryCB->NameInformation.FileName,
 731                                   pParentDirectoryCB,
 732                                   NULL,
 733                                   pParentDirectoryCB->OpenReferenceCount);
 734                 }
 735
 736                 try_return( ntStatus = STATUS_OBJECT_NAME_COLLISION);
 737             }
 738
 739             //
 740             // OK, go and create the node
 741             //
 742
 743             ntStatus = AFSProcessCreate( Irp,
 744                                          &stAuthGroup,
 745                                          pVolumeCB,
 746                                          pParentDirectoryCB,
 747                                          &uniFileName,
 748                                          &uniComponentName,
 749                                          &uniRootFileName,
 750                                          &pFcb,
 751                                          &pCcb);
 752
 753             if( !NT_SUCCESS( ntStatus))
 754             {
 755
 756                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 757                               AFS_TRACE_LEVEL_ERROR,
 758                               "AFSCommonCreate Failed to create of %wZ in directory %wZ Status %08lX\n",
 759                               &uniComponentName,
 760                               &pParentDirectoryCB->NameInformation.FileName,
 761                               ntStatus);
 762             }
 763
 764             //
 765             // Dereference the parent entry
 766             //
 767
 768             lCount = InterlockedDecrement( &pParentDirectoryCB->OpenReferenceCount);
 769
 770             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 771                           AFS_TRACE_LEVEL_VERBOSE,
 772                           "AFSCreate Decrement6 count on %wZ DE %p Ccb %p Cnt %d\n",
 773                           &pParentDirectoryCB->NameInformation.FileName,
 774                           pParentDirectoryCB,
 775                           NULL,
 776                           lCount);
 777
 778             try_return( ntStatus);
 779         }
 780
 781         //
 782         // We should not have an extra component except for PIOCtl opens
 783         //
 784
 785         if( uniComponentName.Length > 0)
 786         {
 787
 788             //
 789             // If this is an open on "_._AFS_IOCTL_._" then perform handling on it accordingly
 790             //
 791
 792             if( RtlCompareUnicodeString( &AFSPIOCtlName,
 793                                          &uniComponentName,
 794                                          TRUE) == 0)
 795             {
 796
 797                 ntStatus = AFSOpenIOCtlFcb( Irp,
 798                                             &stAuthGroup,
 799                                             pParentDirectoryCB,
 800                                             &pFcb,
 801                                             &pCcb);
 802
 803                 if( !NT_SUCCESS( ntStatus))
 804                 {
 805
 806                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 807                                   AFS_TRACE_LEVEL_ERROR,
 808                                   "AFSCommonCreate Failed to IOCtl open on %wZ Status %08lX\n",
 809                                   &uniComponentName,
 810                                   ntStatus);
 811                 }
 812             }
 813             else
 814             {
 815
 816                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 817                               AFS_TRACE_LEVEL_VERBOSE,
 818                               "AFSCommonCreate (%08lX) File %wZ name not found\n",
 819                               Irp,
 820                               &uniFileName);
 821
 822                 ntStatus = STATUS_OBJECT_NAME_NOT_FOUND;
 823             }
 824
 825             if( !NT_SUCCESS( ntStatus))
 826             {
 827
 828                 //
 829                 // Dereference the parent entry
 830                 //
 831
 832                 if( pDirectoryCB != NULL)
 833                 {
 834
 835                     lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 836
 837                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 838                                   AFS_TRACE_LEVEL_VERBOSE,
 839                                   "AFSCommonCreate Decrement7a count on %wZ DE %p Ccb %p Cnt %d\n",
 840                                   &pDirectoryCB->NameInformation.FileName,
 841                                   pDirectoryCB,
 842                                   NULL,
 843                                   lCount);
 844                 }
 845                 else
 846                 {
 847
 848                     lCount = InterlockedDecrement( &pParentDirectoryCB->OpenReferenceCount);
 849
 850                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 851                                   AFS_TRACE_LEVEL_VERBOSE,
 852                                   "AFSCommonCreate Decrement7b count on %wZ DE %p Ccb %p Cnt %d\n",
 853                                   &pParentDirectoryCB->NameInformation.FileName,
 854                                   pParentDirectoryCB,
 855                                   NULL,
 856                                   lCount);
 857                 }
 858             }
 859
 860             try_return( ntStatus);
 861         }
 862
 863         //
 864         // For root opens the parent will be NULL
 865         //
 866
 867         if( pParentDirectoryCB == NULL)
 868         {
 869
 870             //
 871             // Check for the delete on close flag for the root
 872             //
 873
 874             if( BooleanFlagOn( ulOptions, FILE_DELETE_ON_CLOSE ))
 875             {
 876
 877                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 878                               AFS_TRACE_LEVEL_ERROR,
 879                               "AFSCommonCreate (%08lX) Attempt to open root as delete on close\n",
 880                               Irp);
 881
 882                 lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 883
 884                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 885                               AFS_TRACE_LEVEL_VERBOSE,
 886                               "AFSCommonCreate Decrement8 count on %wZ DE %p Ccb %p Cnt %d\n",
 887                               &pDirectoryCB->NameInformation.FileName,
 888                               pDirectoryCB,
 889                               NULL,
 890                               lCount);
 891
 892                 try_return( ntStatus = STATUS_CANNOT_DELETE);
 893             }
 894
 895             //
 896             // If this is the target directory, then bail
 897             //
 898
 899             if( bOpenTargetDirectory)
 900             {
 901
 902                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 903                               AFS_TRACE_LEVEL_ERROR,
 904                               "AFSCommonCreate (%08lX) Attempt to open root as target directory\n",
 905                               Irp);
 906
 907                 lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 908
 909                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 910                               AFS_TRACE_LEVEL_VERBOSE,
 911                               "AFSCommonCreate Decrement9 count on %wZ DE %p Ccb %p Cnt %d\n",
 912                               &pDirectoryCB->NameInformation.FileName,
 913                               pDirectoryCB,
 914                               NULL,
 915                               lCount);
 916
 917                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
 918             }
 919
 920             //
 921             // Go and open the root of the volume
 922             //
 923
 924             ntStatus = AFSOpenRoot( Irp,
 925                                     pVolumeCB,
 926                                     &stAuthGroup,
 927                                     &pFcb,
 928                                     &pCcb);
 929
 930             if( !NT_SUCCESS( ntStatus))
 931             {
 932
 933                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 934                               AFS_TRACE_LEVEL_ERROR,
 935                               "AFSCommonCreate Failed to open volume root %08lX-%08lX Status %08lX\n",
 936                               pVolumeCB->ObjectInformation.FileId.Cell,
 937                               pVolumeCB->ObjectInformation.FileId.Volume,
 938                               ntStatus);
 939
 940                 lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 941
 942                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 943                               AFS_TRACE_LEVEL_VERBOSE,
 944                               "AFSCommonCreate Decrement10 count on %wZ DE %p Ccb %p Cnt %d\n",
 945                               &pDirectoryCB->NameInformation.FileName,
 946                               pDirectoryCB,
 947                               NULL,
 948                               lCount);
 949             }
 950
 951             try_return( ntStatus);
 952         }
 953
 954         //
 955         // At this point if we have no pDirectoryCB it was not found.
 956         //
 957
 958         if( pDirectoryCB == NULL)
 959         {
 960
 961             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 962                           AFS_TRACE_LEVEL_ERROR,
 963                           "AFSCommonCreate Failing access to %wZ\n",
 964                           &uniFileName);
 965
 966             try_return( ntStatus = STATUS_OBJECT_NAME_NOT_FOUND);
 967         }
 968
 969         if( ulCreateDisposition == FILE_OVERWRITE ||
 970             ulCreateDisposition == FILE_SUPERSEDE ||
 971             ulCreateDisposition == FILE_OVERWRITE_IF)
 972         {
 973
 974             //
 975             // Go process a file for overwrite or supersede.
 976             //
 977
 978             ntStatus = AFSProcessOverwriteSupersede( DeviceObject,
 979                                                      Irp,
 980                                                      pVolumeCB,
 981                                                      &stAuthGroup,
 982                                                      pParentDirectoryCB,
 983                                                      pDirectoryCB,
 984                                                      &pFcb,
 985                                                      &pCcb);
 986
 987             if( !NT_SUCCESS( ntStatus))
 988             {
 989
 990                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 991                               AFS_TRACE_LEVEL_ERROR,
 992                               "AFSCommonCreate Failed overwrite/supersede on %wZ Status %08lX\n",
 993                               &pDirectoryCB->NameInformation.FileName,
 994                               ntStatus);
 995
 996                 lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
 997
 998                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 999                               AFS_TRACE_LEVEL_VERBOSE,
1000                               "AFSCommonCreate Decrement11 count on %wZ DE %p Ccb %p Cnt %d\n",
1001                               &pDirectoryCB->NameInformation.FileName,
1002                               pDirectoryCB,
1003                               NULL,
1004                               lCount);
1005             }
1006
1007             try_return( ntStatus);
1008         }
1009
1010         //
1011         // Trying to open the file
1012         //
1013
1014         ntStatus = AFSProcessOpen( Irp,
1015                                    &stAuthGroup,
1016                                    pVolumeCB,
1017                                    pParentDirectoryCB,
1018                                    pDirectoryCB,
1019                                    &pFcb,
1020                                    &pCcb);
1021
1022         if( !NT_SUCCESS( ntStatus))
1023         {
1024
1025             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1026                           AFS_TRACE_LEVEL_ERROR,
1027                           "AFSCommonCreate Failed open on %wZ Status %08lX\n",
1028                           &pDirectoryCB->NameInformation.FileName,
1029                           ntStatus);
1030
1031             lCount = InterlockedDecrement( &pDirectoryCB->OpenReferenceCount);
1032
1033             AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1034                           AFS_TRACE_LEVEL_VERBOSE,
1035                           "AFSCommonCreate Decrement12 count on %wZ DE %p Ccb %p Cnt %d\n",
1036                           &pDirectoryCB->NameInformation.FileName,
1037                           pDirectoryCB,
1038                           NULL,
1039                           lCount);
1040         }
1041
1042 try_exit:
1043
1044         if( NT_SUCCESS( ntStatus) &&
1045             ntStatus != STATUS_REPARSE)
1046         {
1047
1048             if( pCcb != NULL)
1049             {
1050
1051                 RtlCopyMemory( &pCcb->AuthGroup,
1052                                &stAuthGroup,
1053                                sizeof( GUID));
1054
1055                 //
1056                 // If we have a substitute name, then use it
1057                 //
1058
1059                 if( uniSubstitutedPathName.Buffer != NULL)
1060                 {
1061
1062                     pCcb->FullFileName = uniSubstitutedPathName;
1063
1064                     SetFlag( pCcb->Flags, CCB_FLAG_FREE_FULL_PATHNAME);
1065
1066                     ClearFlag( ulParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER);
1067                 }
1068                 else
1069                 {
1070
1071                     pCcb->FullFileName = uniRootFileName;
1072
1073                     if( BooleanFlagOn( ulParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER))
1074                     {
1075
1076                         SetFlag( pCcb->Flags, CCB_FLAG_FREE_FULL_PATHNAME);
1077
1078                         ClearFlag( ulParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER);
1079                     }
1080                 }
1081
1082                 if( bOpenedReparsePoint)
1083                 {
1084                     SetFlag( pCcb->Flags, CCB_FLAG_MASK_OPENED_REPARSE_POINT);
1085                 }
1086
1087                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
1088                               AFS_TRACE_LEVEL_VERBOSE,
1089                               "AFSCommonCreate Count on %wZ DE %p Ccb %p Cnt %d\n",
1090                               &pCcb->DirectoryCB->NameInformation.FileName,
1091                               pCcb->DirectoryCB,
1092                               pCcb,
1093                               pCcb->DirectoryCB->OpenReferenceCount);
1094
1095                 ASSERT( pCcb->DirectoryCB->OpenReferenceCount > 0);
1096
1097                 pCcb->CurrentDirIndex = 0;
1098
1099                 if( !BooleanFlagOn( ulParseFlags, AFS_PARSE_FLAG_ROOT_ACCESS))
1100                 {
1101
1102                     SetFlag( pCcb->Flags, CCB_FLAG_RETURN_RELATIVE_ENTRIES);
1103                 }
1104
1105                 //
1106                 // Save off the name array for this instance
1107                 //
1108
1109                 pCcb->NameArray = pNameArray;
1110
1111                 pNameArray = NULL;
1112             }
1113
1114             //
1115             // If we make it here then init the FO for the request.
1116             //
1117
1118             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1119                           AFS_TRACE_LEVEL_VERBOSE_2,
1120                           "AFSCommonCreate (%08lX) FileObject %08lX FsContext %08lX FsContext2 %08lX\n",
1121                           Irp,
1122                           pFileObject,
1123                           pFcb,
1124                           pCcb);
1125
1126             pFileObject->FsContext = (void *)pFcb;
1127
1128             pFileObject->FsContext2 = (void *)pCcb;
1129
1130             if( pFcb != NULL)
1131             {
1132
1133                 ASSERT( pFcb->OpenHandleCount > 0);
1134
1135                 ClearFlag( pFcb->Flags, AFS_FCB_FILE_CLOSED);
1136
1137                 //
1138                 // For files perform additional processing
1139                 //
1140
1141                 if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
1142                 {
1143                     pFileObject->SectionObjectPointer = &pFcb->NPFcb->SectionObjectPointers;
1144                 }
1145
1146                 //
1147                 // If the user did not request nobuffering then mark the FO as cacheable
1148                 //
1149
1150                 if( bNoIntermediateBuffering)
1151                 {
1152
1153                     pFileObject->Flags |= FO_NO_INTERMEDIATE_BUFFERING;
1154                 }
1155                 else
1156                 {
1157
1158                     pFileObject->Flags |= FO_CACHE_SUPPORTED;
1159                 }
1160
1161                 //
1162                 // If the file was opened for execution then we need to set the bit in the FO
1163                 //
1164
1165                 if( BooleanFlagOn( *pDesiredAccess,
1166                                    FILE_EXECUTE))
1167                 {
1168
1169                     SetFlag( pFileObject->Flags, FO_FILE_FAST_IO_READ);
1170                 }
1171
1172                 //
1173                 // Update the last access time
1174                 //
1175
1176                 KeQuerySystemTime( &pFcb->ObjectInformation->LastAccessTime);
1177
1178                 if( pCcb != NULL)
1179                 {
1180                     AFSInsertCcb( pFcb,
1181                                   pCcb);
1182                 }
1183             }
1184             else
1185             {
1186
1187                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1188                               AFS_TRACE_LEVEL_ERROR,
1189                               "AFSCommonCreate (%08lX) Returning with NULL Fcb FileObject %08lX FsContext %08lX FsContext2 %08lX\n",
1190                               Irp,
1191                               pFileObject,
1192                               pFcb,
1193                               pCcb);
1194             }
1195         }
1196         else
1197         {
1198             if( NT_SUCCESS( ntStatus) &&
1199                 ntStatus == STATUS_REPARSE)
1200             {
1201
1202                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1203                               AFS_TRACE_LEVEL_ERROR,
1204                               "AFSCommonCreate (%08lX) STATUS_REPARSE FileObject %08lX FsContext %08lX FsContext2 %08lX\n",
1205                               Irp,
1206                               pFileObject,
1207                               pFcb,
1208                               pCcb);
1209             }
1210
1211             //
1212             // Free up the sub name if we have one
1213             //
1214
1215             if( uniSubstitutedPathName.Buffer != NULL)
1216             {
1217
1218                 AFSExFreePool( uniSubstitutedPathName.Buffer);
1219
1220                 ClearFlag( ulParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER);
1221             }
1222         }
1223
1224         //
1225         // Free up the name array ...
1226         //
1227
1228         if( pNameArray != NULL)
1229         {
1230
1231             AFSFreeNameArray( pNameArray);
1232         }
1233
1234         if( BooleanFlagOn( ulParseFlags, AFS_PARSE_FLAG_FREE_FILE_BUFFER))
1235         {
1236
1237             AFSExFreePool( uniRootFileName.Buffer);
1238         }
1239
1240         if( bReleaseVolume)
1241         {
1242
1243             lCount = InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
1244
1245             AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
1246                           AFS_TRACE_LEVEL_VERBOSE,
1247                           "AFSCommonCreate Decrement count on Volume %08lX Cnt %d\n",
1248                           pVolumeCB,
1249                           lCount);
1250         }
1251
1252         //
1253         // Setup the Irp for completion, the Information has been set previously
1254         //
1255
1256         Irp->IoStatus.Status = ntStatus;
1257     }
1258
1259     return ntStatus;
1260 }
1261
1262 NTSTATUS
1263 AFSOpenRedirector( IN PIRP Irp,
1264                    IN AFSFcb **Fcb,
1265                    IN AFSCcb **Ccb)
1266 {
1267
1268     NTSTATUS ntStatus = STATUS_SUCCESS;
1269     LONG lCount;
1270
1271     __Enter
1272     {
1273
1274         //
1275         // Initialize the Ccb for the file.
1276         //
1277
1278         ntStatus = AFSInitCcb( Ccb);
1279
1280         if( !NT_SUCCESS( ntStatus))
1281         {
1282
1283             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1284                           AFS_TRACE_LEVEL_ERROR,
1285                           "AFSOpenRedirector (%08lX) Failed to allocate Ccb\n",
1286                           Irp);
1287
1288             try_return( ntStatus);
1289         }
1290
1291         //
1292         // Setup the Ccb
1293         //
1294
1295         (*Ccb)->DirectoryCB = AFSRedirectorRoot->DirectoryCB;
1296
1297         //
1298         // Increment the open count on this Fcb
1299         //
1300
1301         lCount = InterlockedIncrement( &AFSRedirectorRoot->RootFcb->OpenReferenceCount);
1302
1303         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1304                       AFS_TRACE_LEVEL_VERBOSE,
1305                       "AFSOpenRedirector Increment count on Fcb %08lX Cnt %d\n",
1306                       AFSRedirectorRoot->RootFcb,
1307                       lCount);
1308
1309         lCount = InterlockedIncrement( &AFSRedirectorRoot->RootFcb->OpenHandleCount);
1310
1311         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1312                       AFS_TRACE_LEVEL_VERBOSE,
1313                       "AFSOpenRedirector Increment handle count on Fcb %08lX Cnt %d\n",
1314                       AFSRedirectorRoot->RootFcb,
1315                       lCount);
1316
1317         *Fcb = AFSRedirectorRoot->RootFcb;
1318
1319         lCount = InterlockedIncrement( &(*Ccb)->DirectoryCB->OpenReferenceCount);
1320
1321         //
1322         // Return the open result for this file
1323         //
1324
1325         Irp->IoStatus.Information = FILE_OPENED;
1326
1327 try_exit:
1328
1329         NOTHING;
1330     }
1331
1332     return ntStatus;
1333 }
1334
1335 NTSTATUS
1336 AFSOpenAFSRoot( IN PIRP Irp,
1337                 IN AFSFcb **Fcb,
1338                 IN AFSCcb **Ccb)
1339 {
1340
1341     NTSTATUS ntStatus = STATUS_SUCCESS;
1342     LONG lCount;
1343
1344     __Enter
1345     {
1346
1347         //
1348         // Initialize the Ccb for the file.
1349         //
1350
1351         ntStatus = AFSInitCcb( Ccb);
1352
1353         if( !NT_SUCCESS( ntStatus))
1354         {
1355
1356             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1357                           AFS_TRACE_LEVEL_ERROR,
1358                           "AFSOpenAFSRoot (%08lX) Failed to allocate Ccb\n",
1359                           Irp);
1360
1361             try_return( ntStatus);
1362         }
1363
1364         //
1365         // Setup the Ccb
1366         //
1367
1368         (*Ccb)->DirectoryCB = AFSGlobalRoot->DirectoryCB;
1369
1370         //
1371         // Increment the open count on this Fcb
1372         //
1373
1374         lCount = InterlockedIncrement( &AFSGlobalRoot->RootFcb->OpenReferenceCount);
1375
1376         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1377                       AFS_TRACE_LEVEL_VERBOSE,
1378                       "AFSOpenAFSRoot Increment count on Fcb %08lX Cnt %d\n",
1379                       AFSGlobalRoot->RootFcb,
1380                       lCount);
1381
1382         lCount = InterlockedIncrement( &AFSGlobalRoot->RootFcb->OpenHandleCount);
1383
1384         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1385                       AFS_TRACE_LEVEL_VERBOSE,
1386                       "AFSOpenAFSRoot Increment handle count on Fcb %08lX Cnt %d\n",
1387                       AFSGlobalRoot->RootFcb,
1388                       lCount);
1389
1390         *Fcb = AFSGlobalRoot->RootFcb;
1391
1392         //
1393         // Return the open result for this file
1394         //
1395
1396         Irp->IoStatus.Information = FILE_OPENED;
1397
1398 try_exit:
1399
1400         NOTHING;
1401     }
1402
1403     return ntStatus;
1404 }
1405
1406 NTSTATUS
1407 AFSOpenRoot( IN PIRP Irp,
1408              IN AFSVolumeCB *VolumeCB,
1409              IN GUID *AuthGroup,
1410              OUT AFSFcb **RootFcb,
1411              OUT AFSCcb **Ccb)
1412 {
1413
1414     NTSTATUS ntStatus = STATUS_SUCCESS;
1415     PFILE_OBJECT pFileObject = NULL;
1416     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1417     PACCESS_MASK pDesiredAccess = NULL;
1418     USHORT usShareAccess;
1419     ULONG ulOptions;
1420     BOOLEAN bAllocatedCcb = FALSE;
1421     BOOLEAN bReleaseFcb = FALSE;
1422     AFSFileOpenCB   stOpenCB;
1423     AFSFileOpenResultCB stOpenResultCB;
1424     ULONG       ulResultLen = 0;
1425     LONG        lCount;
1426
1427     __Enter
1428     {
1429
1430         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
1431         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
1432         ulOptions = pIrpSp->Parameters.Create.Options;
1433
1434         pFileObject = pIrpSp->FileObject;
1435
1436         if( BooleanFlagOn( ulOptions, FILE_NON_DIRECTORY_FILE))
1437         {
1438
1439             ntStatus = STATUS_FILE_IS_A_DIRECTORY;
1440
1441             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1442                           AFS_TRACE_LEVEL_ERROR,
1443                           "AFSOpenRoot (%08lX) Attempt to open root as file Status %08lX\n",
1444                           Irp,
1445                           ntStatus);
1446
1447             try_return( ntStatus);
1448         }
1449
1450         //
1451         // Check if we should go and retrieve updated information for the node
1452         //
1453
1454         ntStatus = AFSValidateEntry( VolumeCB->DirectoryCB,
1455                                      AuthGroup,
1456                                      TRUE,
1457                                      FALSE);
1458
1459         if( !NT_SUCCESS( ntStatus))
1460         {
1461
1462             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1463                           AFS_TRACE_LEVEL_ERROR,
1464                           "AFSOpenRoot (%08lX) Failed to validate root entry Status %08lX\n",
1465                           Irp,
1466                           ntStatus);
1467
1468             try_return( ntStatus);
1469         }
1470
1471         //
1472         // Check with the service that we can open the file
1473         //
1474
1475         RtlZeroMemory( &stOpenCB,
1476                        sizeof( AFSFileOpenCB));
1477
1478         stOpenCB.DesiredAccess = *pDesiredAccess;
1479
1480         stOpenCB.ShareAccess = usShareAccess;
1481
1482         stOpenResultCB.GrantedAccess = 0;
1483
1484         ulResultLen = sizeof( AFSFileOpenResultCB);
1485
1486         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_OPEN_FILE,
1487                                       AFS_REQUEST_FLAG_SYNCHRONOUS | AFS_REQUEST_FLAG_HOLD_FID,
1488                                       AuthGroup,
1489                                       NULL,
1490                                       &VolumeCB->ObjectInformation.FileId,
1491                                       (void *)&stOpenCB,
1492                                       sizeof( AFSFileOpenCB),
1493                                       (void *)&stOpenResultCB,
1494                                       &ulResultLen);
1495
1496         if( !NT_SUCCESS( ntStatus))
1497         {
1498
1499             UNICODE_STRING uniGUID;
1500
1501             uniGUID.Length = 0;
1502             uniGUID.MaximumLength = 0;
1503             uniGUID.Buffer = NULL;
1504
1505             if( AuthGroup != NULL)
1506             {
1507                 RtlStringFromGUID( *AuthGroup,
1508                                    &uniGUID);
1509             }
1510
1511             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1512                           AFS_TRACE_LEVEL_ERROR,
1513                           "AFSOpenRoot (%08lX) Failed open in service volume %08lX-%08lX AuthGroup %wZ Status %08lX\n",
1514                           Irp,
1515                           VolumeCB->ObjectInformation.FileId.Cell,
1516                           VolumeCB->ObjectInformation.FileId.Volume,
1517                           &uniGUID,
1518                           ntStatus);
1519
1520             if( AuthGroup != NULL)
1521             {
1522                 RtlFreeUnicodeString( &uniGUID);
1523             }
1524
1525             try_return( ntStatus);
1526         }
1527
1528         //
1529         // If the entry is not initialized then do it now
1530         //
1531
1532         if( !BooleanFlagOn( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
1533         {
1534
1535             AFSAcquireExcl( VolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
1536                             TRUE);
1537
1538             if( !BooleanFlagOn( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
1539             {
1540
1541                 ntStatus = AFSEnumerateDirectory( AuthGroup,
1542                                                   &VolumeCB->ObjectInformation,
1543                                                   TRUE);
1544
1545                 if( !NT_SUCCESS( ntStatus))
1546                 {
1547
1548                     AFSReleaseResource( VolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
1549
1550                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1551                                   AFS_TRACE_LEVEL_ERROR,
1552                                   "AFSOpenRoot (%08lX) Failed to enumerate directory Status %08lX\n",
1553                                   Irp,
1554                                   ntStatus);
1555
1556                     try_return( ntStatus);
1557                 }
1558
1559                 SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1560             }
1561
1562             AFSReleaseResource( VolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
1563         }
1564
1565         //
1566         // If the root fcb has been initialized then check access otherwise
1567         // init the volume fcb
1568         //
1569
1570         if( VolumeCB->RootFcb == NULL)
1571         {
1572
1573             ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
1574                                        VolumeCB);
1575
1576             if( !NT_SUCCESS( ntStatus))
1577             {
1578
1579                 try_return( ntStatus);
1580             }
1581         }
1582         else
1583         {
1584
1585             AFSAcquireExcl( VolumeCB->RootFcb->Header.Resource,
1586                             TRUE);
1587         }
1588
1589         bReleaseFcb = TRUE;
1590
1591         //
1592         // If there are current opens on the Fcb, check the access.
1593         //
1594
1595         if( VolumeCB->RootFcb->OpenHandleCount > 0)
1596         {
1597
1598             ntStatus = IoCheckShareAccess( *pDesiredAccess,
1599                                            usShareAccess,
1600                                            pFileObject,
1601                                            &VolumeCB->RootFcb->ShareAccess,
1602                                            FALSE);
1603
1604             if( !NT_SUCCESS( ntStatus))
1605             {
1606
1607                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1608                               AFS_TRACE_LEVEL_ERROR,
1609                               "AFSOpenRoot (%08lX) Access check failure Status %08lX\n",
1610                               Irp,
1611                               ntStatus);
1612
1613                 try_return( ntStatus);
1614             }
1615         }
1616
1617         //
1618         // Initialize the Ccb for the file.
1619         //
1620
1621         ntStatus = AFSInitCcb( Ccb);
1622
1623         if( !NT_SUCCESS( ntStatus))
1624         {
1625
1626             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1627                           AFS_TRACE_LEVEL_ERROR,
1628                           "AFSOpenRoot (%08lX) Failed to allocate Ccb Status %08lX\n",
1629                           Irp,
1630                           ntStatus);
1631
1632             try_return( ntStatus);
1633         }
1634
1635         bAllocatedCcb = TRUE;
1636
1637         //
1638         // Setup the ccb
1639         //
1640
1641         (*Ccb)->DirectoryCB = VolumeCB->DirectoryCB;
1642
1643         (*Ccb)->GrantedAccess = *pDesiredAccess;
1644
1645         //
1646         // OK, update the share access on the fileobject
1647         //
1648
1649         if( VolumeCB->RootFcb->OpenHandleCount > 0)
1650         {
1651
1652             IoUpdateShareAccess( pFileObject,
1653                                  &VolumeCB->RootFcb->ShareAccess);
1654         }
1655         else
1656         {
1657
1658             //
1659             // Set the access
1660             //
1661
1662             IoSetShareAccess( *pDesiredAccess,
1663                               usShareAccess,
1664                               pFileObject,
1665                               &VolumeCB->RootFcb->ShareAccess);
1666         }
1667
1668         //
1669         // Increment the open count on this Fcb
1670         //
1671
1672         lCount = InterlockedIncrement( &VolumeCB->RootFcb->OpenReferenceCount);
1673
1674         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1675                       AFS_TRACE_LEVEL_VERBOSE,
1676                       "AFSOpenRoot Increment count on Fcb %08lX Cnt %d\n",
1677                       VolumeCB->RootFcb,
1678                       lCount);
1679
1680         lCount = InterlockedIncrement( &VolumeCB->RootFcb->OpenHandleCount);
1681
1682         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1683                       AFS_TRACE_LEVEL_VERBOSE,
1684                       "AFSOpenRoot Increment handle count on Fcb %08lX Cnt %d\n",
1685                       VolumeCB->RootFcb,
1686                       lCount);
1687
1688         //
1689         // Indicate the object is held
1690         //
1691
1692         SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_HELD_IN_SERVICE);
1693
1694         //
1695         // Return the open result for this file
1696         //
1697
1698         Irp->IoStatus.Information = FILE_OPENED;
1699
1700         *RootFcb = VolumeCB->RootFcb;
1701
1702 try_exit:
1703
1704         if( bReleaseFcb)
1705         {
1706
1707             AFSReleaseResource( VolumeCB->RootFcb->Header.Resource);
1708         }
1709
1710         if( !NT_SUCCESS( ntStatus))
1711         {
1712
1713             if( bAllocatedCcb)
1714             {
1715
1716                 AFSRemoveCcb( NULL,
1717                               *Ccb);
1718
1719                 *Ccb = NULL;
1720             }
1721
1722             Irp->IoStatus.Information = 0;
1723         }
1724     }
1725
1726     return ntStatus;
1727 }
1728
1729 NTSTATUS
1730 AFSProcessCreate( IN PIRP               Irp,
1731                   IN GUID              *AuthGroup,
1732                   IN AFSVolumeCB       *VolumeCB,
1733                   IN AFSDirectoryCB    *ParentDirCB,
1734                   IN PUNICODE_STRING    FileName,
1735                   IN PUNICODE_STRING    ComponentName,
1736                   IN PUNICODE_STRING    FullFileName,
1737                   OUT AFSFcb          **Fcb,
1738                   OUT AFSCcb          **Ccb)
1739 {
1740
1741     NTSTATUS ntStatus = STATUS_SUCCESS;
1742     PFILE_OBJECT pFileObject = NULL;
1743     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1744     ULONG ulOptions = 0;
1745     ULONG ulShareMode = 0;
1746     ULONG ulAccess = 0;
1747     ULONG ulAttributes = 0;
1748     LARGE_INTEGER   liAllocationSize = {0,0};
1749     BOOLEAN bFileCreated = FALSE, bReleaseFcb = FALSE, bAllocatedCcb = FALSE;
1750     BOOLEAN bAllocatedFcb = FALSE;
1751     PACCESS_MASK pDesiredAccess = NULL;
1752     USHORT usShareAccess;
1753     AFSDirectoryCB *pDirEntry = NULL;
1754     AFSObjectInfoCB *pParentObjectInfo = NULL;
1755     AFSObjectInfoCB *pObjectInfo = NULL;
1756     LONG lCount;
1757
1758     __Enter
1759     {
1760
1761         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
1762         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
1763
1764         pFileObject = pIrpSp->FileObject;
1765
1766         //
1767         // Extract out the options
1768         //
1769
1770         ulOptions = pIrpSp->Parameters.Create.Options;
1771
1772         //
1773         // We pass all attributes they want to apply to the file to the create
1774         //
1775
1776         ulAttributes = pIrpSp->Parameters.Create.FileAttributes;
1777
1778         //
1779         // If this is a directory create then set the attribute correctly
1780         //
1781
1782         if( ulOptions & FILE_DIRECTORY_FILE)
1783         {
1784
1785             ulAttributes |= FILE_ATTRIBUTE_DIRECTORY;
1786         }
1787
1788         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1789                       AFS_TRACE_LEVEL_VERBOSE,
1790                       "AFSProcessCreate (%08lX) Creating file %wZ Attributes %08lX\n",
1791                       Irp,
1792                       FullFileName,
1793                       ulAttributes);
1794
1795         if( BooleanFlagOn( VolumeCB->VolumeInformation.Characteristics, FILE_READ_ONLY_DEVICE))
1796         {
1797
1798             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1799                           AFS_TRACE_LEVEL_ERROR,
1800                           "AFSProcessCreate Request failed due to read only volume %wZ\n",
1801                           FullFileName);
1802
1803             try_return( ntStatus = STATUS_MEDIA_WRITE_PROTECTED);
1804         }
1805
1806         pParentObjectInfo = ParentDirCB->ObjectInformation;
1807
1808         //
1809         // Allocate and insert the direntry into the parent node
1810         //
1811
1812         ntStatus = AFSCreateDirEntry( AuthGroup,
1813                                       pParentObjectInfo,
1814                                       ParentDirCB,
1815                                       FileName,
1816                                       ComponentName,
1817                                       ulAttributes,
1818                                       &pDirEntry);
1819
1820         if( !NT_SUCCESS( ntStatus))
1821         {
1822
1823             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1824                           AFS_TRACE_LEVEL_ERROR,
1825                           "AFSProcessCreate (%08lX) Failed to create directory entry %wZ Status %08lX\n",
1826                           Irp,
1827                           FullFileName,
1828                           ntStatus);
1829
1830             try_return( ntStatus);
1831         }
1832
1833         bFileCreated = TRUE;
1834
1835         pObjectInfo = pDirEntry->ObjectInformation;
1836
1837         if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED) ||
1838             pObjectInfo->FileType == AFS_FILE_TYPE_UNKNOWN)
1839         {
1840
1841             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1842                           AFS_TRACE_LEVEL_VERBOSE,
1843                           "AFSProcessCreate (%08lX) Evaluating object %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1844                           Irp,
1845                           &pDirEntry->NameInformation.FileName,
1846                           pObjectInfo->FileId.Cell,
1847                           pObjectInfo->FileId.Volume,
1848                           pObjectInfo->FileId.Vnode,
1849                           pObjectInfo->FileId.Unique);
1850
1851             ntStatus = AFSEvaluateNode( AuthGroup,
1852                                         pDirEntry);
1853
1854             if( !NT_SUCCESS( ntStatus))
1855             {
1856
1857                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1858                               AFS_TRACE_LEVEL_ERROR,
1859                               "AFSProcessCreate (%08lX) Failed to evaluate object %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
1860                               Irp,
1861                               &pDirEntry->NameInformation.FileName,
1862                               pObjectInfo->FileId.Cell,
1863                               pObjectInfo->FileId.Volume,
1864                               pObjectInfo->FileId.Vnode,
1865                               pObjectInfo->FileId.Unique,
1866                               ntStatus);
1867
1868                 try_return( ntStatus);
1869             }
1870
1871             ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED);
1872         }
1873
1874         //
1875         // We may have raced and the Fcb is already created
1876         //
1877
1878         if( pObjectInfo->Fcb != NULL)
1879         {
1880
1881             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1882                           AFS_TRACE_LEVEL_VERBOSE,
1883                           "AFSProcessCreate (%08lX) Not allocating Fcb for file %wZ\n",
1884                           Irp,
1885                           FullFileName);
1886
1887             *Fcb = pObjectInfo->Fcb;
1888
1889             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
1890                             TRUE);
1891         }
1892         else
1893         {
1894
1895             //
1896             // Allocate and initialize the Fcb for the file.
1897             //
1898
1899             ntStatus = AFSInitFcb( pDirEntry);
1900
1901             *Fcb = pObjectInfo->Fcb;
1902
1903             if( !NT_SUCCESS( ntStatus))
1904             {
1905
1906                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1907                               AFS_TRACE_LEVEL_ERROR,
1908                               "AFSProcessCreate (%08lX) Failed to initialize fcb %wZ Status %08lX\n",
1909                               Irp,
1910                               FullFileName,
1911                               ntStatus);
1912
1913                 try_return( ntStatus);
1914             }
1915
1916             if ( ntStatus != STATUS_REPARSE)
1917             {
1918
1919                 bAllocatedFcb = TRUE;
1920             }
1921
1922             ntStatus = STATUS_SUCCESS;
1923         }
1924
1925         //
1926         // Increment the open count on this Fcb
1927         //
1928
1929         lCount = InterlockedIncrement( &(*Fcb)->OpenReferenceCount);
1930
1931         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1932                       AFS_TRACE_LEVEL_VERBOSE,
1933                       "AFSProcessCreate Increment count on Fcb %08lX Cnt %d\n",
1934                       *Fcb,
1935                       lCount);
1936
1937         bReleaseFcb = TRUE;
1938
1939         //
1940         // Initialize the Ccb for the file.
1941         //
1942
1943         ntStatus = AFSInitCcb( Ccb);
1944
1945         if( !NT_SUCCESS( ntStatus))
1946         {
1947
1948             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1949                           AFS_TRACE_LEVEL_ERROR,
1950                           "AFSProcessCreate (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
1951                           Irp,
1952                           FullFileName,
1953                           ntStatus);
1954
1955             try_return( ntStatus);
1956         }
1957
1958         bAllocatedCcb = TRUE;
1959
1960         //
1961         // Initialize the Ccb
1962         //
1963
1964         (*Ccb)->DirectoryCB = pDirEntry;
1965
1966         (*Ccb)->GrantedAccess = *pDesiredAccess;
1967
1968         //
1969         // If this is a file, update the headers filesizes.
1970         //
1971
1972         if( (*Fcb)->Header.NodeTypeCode == AFS_FILE_FCB)
1973         {
1974
1975             //
1976             // Update the sizes with the information passed in
1977             //
1978
1979             (*Fcb)->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
1980             (*Fcb)->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
1981             (*Fcb)->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
1982
1983             //
1984             // Notify the system of the addition
1985             //
1986
1987             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1988                                             *Ccb,
1989                                             (ULONG)FILE_NOTIFY_CHANGE_FILE_NAME,
1990                                             (ULONG)FILE_ACTION_ADDED);
1991
1992             (*Fcb)->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_SUCCESS;
1993         }
1994         else if( (*Fcb)->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1995         {
1996
1997             //
1998             // This is a new directory node so indicate it has been enumerated
1999             //
2000
2001             SetFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
2002
2003             //
2004             // And the parent directory entry
2005             //
2006
2007             KeQuerySystemTime( &pParentObjectInfo->ChangeTime);
2008
2009             //
2010             // Notify the system of the addition
2011             //
2012
2013             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
2014                                             *Ccb,
2015                                             (ULONG)FILE_NOTIFY_CHANGE_DIR_NAME,
2016                                             (ULONG)FILE_ACTION_ADDED);
2017         }
2018         else if( (*Fcb)->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
2019                  (*Fcb)->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB ||
2020                  (*Fcb)->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
2021                  (*Fcb)->Header.NodeTypeCode == AFS_INVALID_FCB)
2022         {
2023
2024             //
2025             // And the parent directory entry
2026             //
2027
2028             KeQuerySystemTime( &pParentObjectInfo->ChangeTime);
2029
2030             //
2031             // Notify the system of the addition
2032             //
2033
2034             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
2035                                             *Ccb,
2036                                             (ULONG)FILE_NOTIFY_CHANGE_DIR_NAME,
2037                                             (ULONG)FILE_ACTION_ADDED);
2038         }
2039
2040         //
2041         // Save off the access for the open
2042         //
2043
2044         IoSetShareAccess( *pDesiredAccess,
2045                           usShareAccess,
2046                           pFileObject,
2047                           &(*Fcb)->ShareAccess);
2048
2049         lCount = InterlockedIncrement( &(*Fcb)->OpenHandleCount);
2050
2051         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2052                       AFS_TRACE_LEVEL_VERBOSE,
2053                       "AFSProcessCreate Increment handle count on Fcb %08lX Cnt %d\n",
2054                       (*Fcb),
2055                       lCount);
2056
2057         //
2058         // Increment the open reference and handle on the parent node
2059         //
2060
2061         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2062
2063         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2064                       AFS_TRACE_LEVEL_VERBOSE,
2065                       "AFSProcessCreate Increment child open handle count on Parent object %08lX Cnt %d\n",
2066                       pObjectInfo->ParentObjectInformation,
2067                       lCount);
2068
2069         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2070
2071         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2072                       AFS_TRACE_LEVEL_VERBOSE,
2073                       "AFSProcessCreate Increment child open ref count on Parent object %08lX Cnt %d\n",
2074                       pObjectInfo->ParentObjectInformation,
2075                       lCount);
2076
2077         if( ulOptions & FILE_DELETE_ON_CLOSE)
2078         {
2079
2080             //
2081             // Mark it for delete on close
2082             //
2083
2084             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2085                           AFS_TRACE_LEVEL_VERBOSE,
2086                           "AFSProcessCreate (%08lX) Setting PENDING_DELETE flag in DirEntry %p Name %wZ\n",
2087                           Irp,
2088                           pDirEntry,
2089                           FullFileName);
2090
2091             SetFlag( pDirEntry->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2092         }
2093
2094         //
2095         // Indicate the object is locked in the service
2096         //
2097
2098         SetFlag( pObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE);
2099
2100         //
2101         // Return the open result for this file
2102         //
2103
2104         Irp->IoStatus.Information = FILE_CREATED;
2105
2106 try_exit:
2107
2108         //
2109         // If we created the Fcb we need to release the resources
2110         //
2111
2112         if( bReleaseFcb)
2113         {
2114
2115             if( !NT_SUCCESS( ntStatus))
2116             {
2117                 //
2118                 // Decrement the open count on this Fcb
2119                 //
2120
2121                 lCount = InterlockedDecrement( &(*Fcb)->OpenReferenceCount);
2122
2123                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2124                               AFS_TRACE_LEVEL_VERBOSE,
2125                               "AFSProcessCreate Decrement count on Fcb %08lX Cnt %d\n",
2126                               *Fcb,
2127                               lCount);
2128             }
2129
2130             AFSReleaseResource( &(*Fcb)->NPFcb->Resource);
2131         }
2132
2133         if( !NT_SUCCESS( ntStatus))
2134         {
2135
2136             if( bFileCreated)
2137             {
2138
2139                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2140                               AFS_TRACE_LEVEL_VERBOSE,
2141                               "AFSProcessCreate Create failed, removing DE %p from aprent object %p Status %08lX\n",
2142                               pDirEntry,
2143                               pParentObjectInfo,
2144                               ntStatus);
2145
2146                 //
2147                 // Remove the dir entry from the parent
2148                 //
2149
2150                 AFSAcquireExcl( pParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
2151                                 TRUE);
2152
2153                 SetFlag( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
2154
2155                 AFSNotifyDelete( pDirEntry,
2156                                  AuthGroup,
2157                                  FALSE);
2158
2159                 //
2160                 // Decrement the reference added during initialization of the DE
2161                 //
2162
2163                 lCount = InterlockedDecrement( &pDirEntry->OpenReferenceCount);
2164
2165                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
2166                               AFS_TRACE_LEVEL_VERBOSE,
2167                               "AFSProcessCreate Decrement count on %wZ DE %p Cnt %d\n",
2168                               &pDirEntry->NameInformation.FileName,
2169                               pDirEntry,
2170                               lCount);
2171
2172                 //
2173                 // Pull the directory entry from the parent
2174                 //
2175
2176                 AFSRemoveDirNodeFromParent( pParentObjectInfo,
2177                                             pDirEntry,
2178                                             FALSE); // Leave it in the enum list so the worker cleans it up
2179
2180                 //
2181                 // Tag the parent as needing verification
2182                 //
2183
2184                 SetFlag( pParentObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2185
2186                 pParentObjectInfo->DataVersion.QuadPart = (ULONGLONG)-1;
2187
2188                 AFSReleaseResource( pParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
2189             }
2190
2191             if( bAllocatedCcb)
2192             {
2193
2194                 AFSRemoveCcb( NULL,
2195                               *Ccb);
2196             }
2197
2198             if( bAllocatedFcb)
2199             {
2200
2201                 AFSRemoveFcb( &pObjectInfo->Fcb);
2202             }
2203
2204             *Fcb = NULL;
2205
2206             *Ccb = NULL;
2207         }
2208     }
2209
2210     return ntStatus;
2211 }
2212
2213 NTSTATUS
2214 AFSOpenTargetDirectory( IN PIRP Irp,
2215                         IN AFSVolumeCB *VolumeCB,
2216                         IN AFSDirectoryCB *ParentDirectoryCB,
2217                         IN AFSDirectoryCB *TargetDirectoryCB,
2218                         IN UNICODE_STRING *TargetName,
2219                         OUT AFSFcb **Fcb,
2220                         OUT AFSCcb **Ccb)
2221 {
2222
2223     NTSTATUS ntStatus = STATUS_SUCCESS;
2224     PFILE_OBJECT pFileObject = NULL;
2225     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2226     PACCESS_MASK pDesiredAccess = NULL;
2227     USHORT usShareAccess;
2228     BOOLEAN bAllocatedCcb = FALSE;
2229     BOOLEAN bReleaseFcb = FALSE, bAllocatedFcb = FALSE;
2230     AFSObjectInfoCB *pParentObject = NULL, *pTargetObject = NULL;
2231     UNICODE_STRING uniTargetName;
2232     LONG lCount;
2233
2234     __Enter
2235     {
2236
2237         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
2238         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
2239
2240         pFileObject = pIrpSp->FileObject;
2241
2242         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2243                       AFS_TRACE_LEVEL_VERBOSE,
2244                       "AFSOpenTargetDirectory (%08lX) Processing file %wZ\n",
2245                       Irp,
2246                       TargetName);
2247
2248         pParentObject = ParentDirectoryCB->ObjectInformation;
2249
2250         if( pParentObject->FileType != AFS_FILE_TYPE_DIRECTORY)
2251         {
2252
2253             try_return( ntStatus = STATUS_INVALID_PARAMETER);
2254         }
2255
2256         //
2257         // Make sure we have an Fcb for the access
2258         //
2259
2260         if( pParentObject->Fcb != NULL)
2261         {
2262
2263             *Fcb = pParentObject->Fcb;
2264
2265             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
2266                             TRUE);
2267         }
2268         else
2269         {
2270
2271             //
2272             // Allocate and initialize the Fcb for the file.
2273             //
2274
2275             ntStatus = AFSInitFcb( ParentDirectoryCB);
2276
2277             *Fcb = pParentObject->Fcb;
2278
2279             if( !NT_SUCCESS( ntStatus))
2280             {
2281
2282                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2283                               AFS_TRACE_LEVEL_ERROR,
2284                               "AFSProcessCreate (%08lX) Failed to initialize fcb %wZ Status %08lX\n",
2285                               Irp,
2286                               &ParentDirectoryCB->NameInformation.FileName,
2287                               ntStatus);
2288
2289                 try_return( ntStatus);
2290             }
2291
2292             if ( ntStatus == STATUS_REPARSE)
2293             {
2294
2295                 bAllocatedFcb = TRUE;
2296             }
2297
2298             ntStatus = STATUS_SUCCESS;
2299         }
2300
2301         //
2302         // Increment the open count on this Fcb
2303         //
2304
2305         lCount = InterlockedIncrement( &pParentObject->Fcb->OpenReferenceCount);
2306
2307         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2308                       AFS_TRACE_LEVEL_VERBOSE,
2309                       "AFSOpenTargetDirectory Increment count on Fcb %08lX Cnt %d\n",
2310                       pParentObject->Fcb,
2311                       lCount);
2312
2313         bReleaseFcb = TRUE;
2314
2315         //
2316         // If there are current opens on the Fcb, check the access.
2317         //
2318
2319         if( pParentObject->Fcb->OpenHandleCount > 0)
2320         {
2321
2322             ntStatus = IoCheckShareAccess( *pDesiredAccess,
2323                                            usShareAccess,
2324                                            pFileObject,
2325                                            &pParentObject->Fcb->ShareAccess,
2326                                            FALSE);
2327
2328             if( !NT_SUCCESS( ntStatus))
2329             {
2330
2331                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2332                               AFS_TRACE_LEVEL_ERROR,
2333                               "AFSOpenTargetDirectory (%08lX) Access check failure %wZ Status %08lX\n",
2334                               Irp,
2335                               &ParentDirectoryCB->NameInformation.FileName,
2336                               ntStatus);
2337
2338                 try_return( ntStatus);
2339             }
2340         }
2341
2342         //
2343         // Initialize the Ccb for the file.
2344         //
2345
2346         ntStatus = AFSInitCcb( Ccb);
2347
2348         if( !NT_SUCCESS( ntStatus))
2349         {
2350
2351             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2352                           AFS_TRACE_LEVEL_ERROR,
2353                           "AFSOpenTargetDirectory (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
2354                           Irp,
2355                           &ParentDirectoryCB->NameInformation.FileName,
2356                           ntStatus);
2357
2358             try_return( ntStatus);
2359         }
2360
2361         bAllocatedCcb = TRUE;
2362
2363         //
2364         // Initialize the Ccb
2365         //
2366
2367         (*Ccb)->DirectoryCB = ParentDirectoryCB;
2368
2369         (*Ccb)->GrantedAccess = *pDesiredAccess;
2370
2371         if( TargetDirectoryCB != NULL &&
2372             FsRtlAreNamesEqual( &TargetDirectoryCB->NameInformation.FileName,
2373                                 TargetName,
2374                                 FALSE,
2375                                 NULL))
2376         {
2377
2378             Irp->IoStatus.Information = FILE_EXISTS;
2379
2380             uniTargetName = TargetDirectoryCB->NameInformation.FileName;
2381         }
2382         else
2383         {
2384
2385             Irp->IoStatus.Information = FILE_DOES_NOT_EXIST;
2386
2387             uniTargetName = *TargetName;
2388         }
2389
2390         //
2391         // Update the filename in the fileobject for rename processing
2392         //
2393
2394         RtlCopyMemory( pFileObject->FileName.Buffer,
2395                        uniTargetName.Buffer,
2396                        uniTargetName.Length);
2397
2398         pFileObject->FileName.Length = uniTargetName.Length;
2399
2400         //
2401         // OK, update the share access on the fileobject
2402         //
2403
2404         if( pParentObject->Fcb->OpenHandleCount > 0)
2405         {
2406
2407             IoUpdateShareAccess( pFileObject,
2408                                  &pParentObject->Fcb->ShareAccess);
2409         }
2410         else
2411         {
2412
2413             //
2414             // Set the access
2415             //
2416
2417             IoSetShareAccess( *pDesiredAccess,
2418                               usShareAccess,
2419                               pFileObject,
2420                               &pParentObject->Fcb->ShareAccess);
2421         }
2422
2423         lCount = InterlockedIncrement( &pParentObject->Fcb->OpenHandleCount);
2424
2425         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2426                       AFS_TRACE_LEVEL_VERBOSE,
2427                       "AFSOpenTargetDirectory Increment handle count on Fcb %08lX Cnt %d\n",
2428                       pParentObject->Fcb,
2429                       lCount);
2430
2431         //
2432         // Increment the open reference and handle on the parent node
2433         //
2434
2435         if( pParentObject->ParentObjectInformation != NULL)
2436         {
2437
2438             lCount = InterlockedIncrement( &pParentObject->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2439
2440             AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2441                           AFS_TRACE_LEVEL_VERBOSE,
2442                           "AFSOpenTargetDirectory Increment child open handle count on Parent object %08lX Cnt %d\n",
2443                           pParentObject->ParentObjectInformation,
2444                           lCount);
2445
2446             lCount = InterlockedIncrement( &pParentObject->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2447
2448             AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2449                           AFS_TRACE_LEVEL_VERBOSE,
2450                           "AFSOpenTargetDirectory Increment child open ref count on Parent object %08lX Cnt %d\n",
2451                           pParentObject->ParentObjectInformation,
2452                           lCount);
2453         }
2454
2455 try_exit:
2456
2457         if( bReleaseFcb)
2458         {
2459
2460             if( !NT_SUCCESS( ntStatus))
2461             {
2462                 //
2463                 // Decrement the open count on this Fcb
2464                 //
2465
2466                 lCount = InterlockedDecrement( &pParentObject->Fcb->OpenReferenceCount);
2467
2468                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2469                               AFS_TRACE_LEVEL_VERBOSE,
2470                               "AFSOpenTargetDirectory Decrement count on Fcb %08lX Cnt %d\n",
2471                               pParentObject->Fcb,
2472                               lCount);
2473             }
2474
2475             AFSReleaseResource( &pParentObject->Fcb->NPFcb->Resource);
2476         }
2477
2478         if( !NT_SUCCESS( ntStatus))
2479         {
2480
2481             if( bAllocatedCcb)
2482             {
2483
2484                 AFSRemoveCcb( NULL,
2485                               *Ccb);
2486             }
2487
2488             *Ccb = NULL;
2489
2490             if( bAllocatedFcb)
2491             {
2492
2493                 AFSRemoveFcb( &pParentObject->Fcb);
2494             }
2495
2496             *Fcb = NULL;
2497         }
2498     }
2499
2500     return ntStatus;
2501 }
2502
2503 NTSTATUS
2504 AFSProcessOpen( IN PIRP Irp,
2505                 IN GUID *AuthGroup,
2506                 IN AFSVolumeCB *VolumeCB,
2507                 IN AFSDirectoryCB *ParentDirCB,
2508                 IN AFSDirectoryCB *DirectoryCB,
2509                 OUT AFSFcb **Fcb,
2510                 OUT AFSCcb **Ccb)
2511 {
2512
2513     NTSTATUS ntStatus = STATUS_SUCCESS;
2514     PFILE_OBJECT pFileObject = NULL;
2515     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2516     PACCESS_MASK pDesiredAccess = NULL;
2517     USHORT usShareAccess;
2518     BOOLEAN bAllocatedCcb = FALSE, bReleaseFcb = FALSE, bAllocatedFcb = FALSE;
2519     ULONG ulAdditionalFlags = 0, ulOptions = 0;
2520     AFSFileOpenCB   stOpenCB;
2521     AFSFileOpenResultCB stOpenResultCB;
2522     ULONG       ulResultLen = 0;
2523     AFSObjectInfoCB *pParentObjectInfo = NULL;
2524     AFSObjectInfoCB *pObjectInfo = NULL;
2525     ULONG       ulFileAccess = 0;
2526     AFSFileAccessReleaseCB stReleaseFileAccess;
2527     LONG lCount;
2528
2529     __Enter
2530     {
2531
2532         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
2533         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
2534
2535         pFileObject = pIrpSp->FileObject;
2536
2537         pParentObjectInfo = ParentDirCB->ObjectInformation;
2538
2539         pObjectInfo = DirectoryCB->ObjectInformation;
2540
2541         //
2542         // Check if the entry is pending a deletion
2543         //
2544
2545         if( BooleanFlagOn( DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE))
2546         {
2547
2548             ntStatus = STATUS_DELETE_PENDING;
2549
2550             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2551                           AFS_TRACE_LEVEL_ERROR,
2552                           "AFSProcessOpen (%08lX) Entry pending delete %wZ Status %08lX\n",
2553                           Irp,
2554                           &DirectoryCB->NameInformation.FileName,
2555                           ntStatus);
2556
2557             try_return( ntStatus);
2558         }
2559
2560         //
2561         // Extract out the options
2562         //
2563
2564         ulOptions = pIrpSp->Parameters.Create.Options;
2565
2566         //
2567         // Check if we should go and retrieve updated information for the node
2568         //
2569
2570         ntStatus = AFSValidateEntry( DirectoryCB,
2571                                      AuthGroup,
2572                                      TRUE,
2573                                      FALSE);
2574
2575         if( !NT_SUCCESS( ntStatus))
2576         {
2577
2578             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2579                           AFS_TRACE_LEVEL_ERROR,
2580                           "AFSProcessOpen (%08lX) Failed to validate entry %wZ Status %08lX\n",
2581                           Irp,
2582                           &DirectoryCB->NameInformation.FileName,
2583                           ntStatus);
2584
2585             try_return( ntStatus);
2586         }
2587
2588         //
2589         // If this is marked for delete on close then be sure we can delete the entry
2590         //
2591
2592         if( BooleanFlagOn( ulOptions, FILE_DELETE_ON_CLOSE))
2593         {
2594
2595             ntStatus = AFSNotifyDelete( DirectoryCB,
2596                                         AuthGroup,
2597                                         TRUE);
2598
2599             if( !NT_SUCCESS( ntStatus))
2600             {
2601
2602                 ntStatus = STATUS_CANNOT_DELETE;
2603
2604                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2605                               AFS_TRACE_LEVEL_ERROR,
2606                               "AFSProcessOpen (%08lX) Cannot delete entry %wZ marked for delete on close Status %08lX\n",
2607                               Irp,
2608                               &DirectoryCB->NameInformation.FileName,
2609                               ntStatus);
2610
2611                 try_return( ntStatus);
2612             }
2613         }
2614
2615         //
2616         // Be sure we have an Fcb for the current object
2617         //
2618
2619         if( pObjectInfo->Fcb == NULL)
2620         {
2621
2622             ntStatus = AFSInitFcb( DirectoryCB);
2623
2624             if( !NT_SUCCESS( ntStatus))
2625             {
2626
2627                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2628                               AFS_TRACE_LEVEL_ERROR,
2629                               "AFSProcessOpen (%08lX) Failed to init fcb on %wZ Status %08lX\n",
2630                               Irp,
2631                               &DirectoryCB->NameInformation.FileName,
2632                               ntStatus);
2633
2634                 try_return( ntStatus);
2635             }
2636
2637             if ( ntStatus != STATUS_REPARSE)
2638             {
2639
2640                 bAllocatedFcb = TRUE;
2641             }
2642
2643             ntStatus = STATUS_SUCCESS;
2644         }
2645         else
2646         {
2647
2648             AFSAcquireExcl( pObjectInfo->Fcb->Header.Resource,
2649                             TRUE);
2650         }
2651
2652         //
2653         // Increment the open count on this Fcb
2654         //
2655
2656         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenReferenceCount);
2657
2658         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2659                       AFS_TRACE_LEVEL_VERBOSE,
2660                       "AFSProcessOpen Increment2 count on Fcb %08lX Cnt %d\n",
2661                       pObjectInfo->Fcb,
2662                       lCount);
2663
2664         bReleaseFcb = TRUE;
2665
2666         //
2667         // Check access on the entry
2668         //
2669
2670         if( pObjectInfo->Fcb->OpenHandleCount > 0)
2671         {
2672
2673             ntStatus = IoCheckShareAccess( *pDesiredAccess,
2674                                            usShareAccess,
2675                                            pFileObject,
2676                                            &pObjectInfo->Fcb->ShareAccess,
2677                                            FALSE);
2678
2679             if( !NT_SUCCESS( ntStatus))
2680             {
2681
2682                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2683                               AFS_TRACE_LEVEL_ERROR,
2684                               "AFSProcessOpen (%08lX) Failed to check share access on %wZ Status %08lX\n",
2685                               Irp,
2686                               &DirectoryCB->NameInformation.FileName,
2687                               ntStatus);
2688
2689                 try_return( ntStatus);
2690             }
2691         }
2692
2693         //
2694         // Additional checks
2695         //
2696
2697         if( pObjectInfo->Fcb->Header.NodeTypeCode == AFS_FILE_FCB)
2698         {
2699
2700             //
2701             // If the caller is asking for write access then try to flush the image section
2702             //
2703
2704             if( FlagOn( *pDesiredAccess, FILE_WRITE_DATA) ||
2705                 BooleanFlagOn(ulOptions, FILE_DELETE_ON_CLOSE))
2706             {
2707
2708                 if( !MmFlushImageSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
2709                                           MmFlushForWrite))
2710                 {
2711
2712                     ntStatus = BooleanFlagOn(ulOptions, FILE_DELETE_ON_CLOSE) ? STATUS_CANNOT_DELETE :
2713                                                                             STATUS_SHARING_VIOLATION;
2714
2715                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2716                                   AFS_TRACE_LEVEL_ERROR,
2717                                   "AFSProcessOpen (%08lX) Failed to flush image section %wZ Status %08lX\n",
2718                                   Irp,
2719                                   &DirectoryCB->NameInformation.FileName,
2720                                   ntStatus);
2721
2722                     try_return( ntStatus);
2723                 }
2724             }
2725
2726             if( BooleanFlagOn( ulOptions, FILE_DIRECTORY_FILE))
2727             {
2728
2729                 ntStatus = STATUS_NOT_A_DIRECTORY;
2730
2731                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2732                               AFS_TRACE_LEVEL_ERROR,
2733                               "AFSProcessOpen (%08lX) Attempt to open file as directory %wZ Status %08lX\n",
2734                               Irp,
2735                               &DirectoryCB->NameInformation.FileName,
2736                               ntStatus);
2737
2738                 try_return( ntStatus);
2739             }
2740
2741             pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_SUCCESS;
2742         }
2743         else if( pObjectInfo->Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB ||
2744                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_ROOT_FCB)
2745         {
2746
2747             if( BooleanFlagOn( ulOptions, FILE_NON_DIRECTORY_FILE))
2748             {
2749
2750                 ntStatus = STATUS_FILE_IS_A_DIRECTORY;
2751
2752                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2753                               AFS_TRACE_LEVEL_ERROR,
2754                               "AFSProcessOpen (%08lX) Attempt to open directory as file %wZ Status %08lX\n",
2755                               Irp,
2756                               &DirectoryCB->NameInformation.FileName,
2757                               ntStatus);
2758
2759                 try_return( ntStatus);
2760             }
2761         }
2762         else if( pObjectInfo->Fcb->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
2763                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB ||
2764                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
2765                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_INVALID_FCB)
2766         {
2767
2768         }
2769         else
2770         {
2771             ASSERT( FALSE);
2772             try_return( ntStatus = STATUS_UNSUCCESSFUL);
2773         }
2774
2775         //
2776         // Check with the service that we can open the file
2777         //
2778
2779         stOpenCB.ParentId = pParentObjectInfo->FileId;
2780
2781         stOpenCB.DesiredAccess = *pDesiredAccess;
2782
2783         stOpenCB.ShareAccess = usShareAccess;
2784
2785         stOpenCB.ProcessId = (ULONGLONG)PsGetCurrentProcessId();
2786
2787         stOpenCB.Identifier = (ULONGLONG)pFileObject;
2788
2789         stOpenResultCB.GrantedAccess = 0;
2790
2791         ulResultLen = sizeof( AFSFileOpenResultCB);
2792
2793         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_OPEN_FILE,
2794                                       AFS_REQUEST_FLAG_SYNCHRONOUS | AFS_REQUEST_FLAG_HOLD_FID,
2795                                       AuthGroup,
2796                                       &DirectoryCB->NameInformation.FileName,
2797                                       &pObjectInfo->FileId,
2798                                       (void *)&stOpenCB,
2799                                       sizeof( AFSFileOpenCB),
2800                                       (void *)&stOpenResultCB,
2801                                       &ulResultLen);
2802
2803         if( !NT_SUCCESS( ntStatus))
2804         {
2805
2806             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2807                           AFS_TRACE_LEVEL_ERROR,
2808                           "AFSProcessOpen (%08lX) Failed open in service %wZ Status %08lX\n",
2809                           Irp,
2810                           &DirectoryCB->NameInformation.FileName,
2811                           ntStatus);
2812
2813             try_return( ntStatus);
2814         }
2815
2816         //
2817         // Save the granted access in case we need to release it below
2818         //
2819
2820         ulFileAccess = stOpenResultCB.FileAccess;
2821
2822         //
2823         // Check if there is a conflict
2824         //
2825
2826         if( !AFSCheckAccess( *pDesiredAccess,
2827                              stOpenResultCB.GrantedAccess,
2828                              BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_DIRECTORY)))
2829         {
2830
2831             ntStatus = STATUS_ACCESS_DENIED;
2832
2833             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2834                           AFS_TRACE_LEVEL_ERROR,
2835                           "AFSProcessOpen (%08lX) Failed to check access from service Desired %08lX Granted %08lX Entry %wZ Status %08lX\n",
2836                           Irp,
2837                           *pDesiredAccess,
2838                           stOpenResultCB.GrantedAccess,
2839                           &DirectoryCB->NameInformation.FileName,
2840                           ntStatus);
2841
2842             try_return( ntStatus);
2843         }
2844
2845         //
2846         // Initialize the Ccb for the file.
2847         //
2848
2849         ntStatus = AFSInitCcb( Ccb);
2850
2851         if( !NT_SUCCESS( ntStatus))
2852         {
2853
2854             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2855                           AFS_TRACE_LEVEL_ERROR,
2856                           "AFSProcessOpen (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
2857                           Irp,
2858                           &DirectoryCB->NameInformation.FileName,
2859                           ntStatus);
2860
2861             try_return( ntStatus);
2862         }
2863
2864         bAllocatedCcb = TRUE;
2865
2866         (*Ccb)->DirectoryCB = DirectoryCB;
2867
2868         (*Ccb)->FileAccess = ulFileAccess;
2869
2870         (*Ccb)->GrantedAccess = *pDesiredAccess;
2871
2872         //
2873         // Perform the access check on the target if this is a mount point or symlink
2874         //
2875
2876         if( pObjectInfo->Fcb->OpenHandleCount > 0)
2877         {
2878
2879             IoUpdateShareAccess( pFileObject,
2880                                  &pObjectInfo->Fcb->ShareAccess);
2881         }
2882         else
2883         {
2884
2885             //
2886             // Set the access
2887             //
2888
2889             IoSetShareAccess( *pDesiredAccess,
2890                               usShareAccess,
2891                               pFileObject,
2892                               &pObjectInfo->Fcb->ShareAccess);
2893         }
2894
2895         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenHandleCount);
2896
2897         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2898                       AFS_TRACE_LEVEL_VERBOSE,
2899                       "AFSProcessOpen Increment handle count on Fcb %08lX Cnt %d\n",
2900                       pObjectInfo->Fcb,
2901                       lCount);
2902
2903         //
2904         // Increment the open reference and handle on the parent node
2905         //
2906
2907         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2908
2909         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2910                       AFS_TRACE_LEVEL_VERBOSE,
2911                       "AFSProcessOpen Increment child open handle count on Parent object %08lX Cnt %d\n",
2912                       pObjectInfo->ParentObjectInformation,
2913                       lCount);
2914
2915         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2916
2917         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2918                       AFS_TRACE_LEVEL_VERBOSE,
2919                       "AFSProcessOpen Increment child open ref count on Parent object %08lX Cnt %d\n",
2920                       pObjectInfo->ParentObjectInformation,
2921                       lCount);
2922
2923         if( BooleanFlagOn( ulOptions, FILE_DELETE_ON_CLOSE))
2924         {
2925
2926             //
2927             // Mark it for delete on close
2928             //
2929
2930             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2931                           AFS_TRACE_LEVEL_VERBOSE,
2932                           "AFSProcessOpen (%08lX) Setting PENDING_DELETE flag in DirEntry %p Name %wZ\n",
2933                           Irp,
2934                           DirectoryCB,
2935                           &DirectoryCB->NameInformation.FileName);
2936
2937             SetFlag( DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2938         }
2939
2940         //
2941         // Indicate the object is held
2942         //
2943
2944         SetFlag( pObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE);
2945
2946         //
2947         // Return the open result for this file
2948         //
2949
2950         Irp->IoStatus.Information = FILE_OPENED;
2951
2952         *Fcb = pObjectInfo->Fcb;
2953
2954 try_exit:
2955
2956         if( bReleaseFcb)
2957         {
2958
2959             if( !NT_SUCCESS( ntStatus))
2960             {
2961                 //
2962                 // Decrement the open count on this Fcb
2963                 //
2964
2965                 lCount = InterlockedDecrement( &pObjectInfo->Fcb->OpenReferenceCount);
2966
2967                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2968                               AFS_TRACE_LEVEL_VERBOSE,
2969                               "AFSProcessOpen Decrement2 count on Fcb %08lX Cnt %d\n",
2970                               pObjectInfo->Fcb,
2971                               lCount);
2972             }
2973
2974             AFSReleaseResource( pObjectInfo->Fcb->Header.Resource);
2975         }
2976
2977         if( !NT_SUCCESS( ntStatus))
2978         {
2979
2980             if ( ulFileAccess > 0)
2981             {
2982
2983                 stReleaseFileAccess.ProcessId = (ULONGLONG)PsGetCurrentProcessId();
2984
2985                 stReleaseFileAccess.FileAccess = ulFileAccess;
2986
2987                 stReleaseFileAccess.Identifier = (ULONGLONG)pFileObject;
2988
2989                 AFSProcessRequest( AFS_REQUEST_TYPE_RELEASE_FILE_ACCESS,
2990                                    AFS_REQUEST_FLAG_SYNCHRONOUS,
2991                                    AuthGroup,
2992                                    &DirectoryCB->NameInformation.FileName,
2993                                    &pObjectInfo->FileId,
2994                                    (void *)&stReleaseFileAccess,
2995                                    sizeof( AFSFileAccessReleaseCB),
2996                                    NULL,
2997                                    NULL);
2998             }
2999
3000             if( bAllocatedCcb)
3001             {
3002
3003                 AFSRemoveCcb( NULL,
3004                               *Ccb);
3005             }
3006
3007             *Ccb = NULL;
3008
3009             if( bAllocatedFcb)
3010             {
3011
3012                 AFSRemoveFcb( &pObjectInfo->Fcb);
3013             }
3014
3015             *Fcb = NULL;
3016         }
3017     }
3018
3019     return ntStatus;
3020 }
3021
3022 NTSTATUS
3023 AFSProcessOverwriteSupersede( IN PDEVICE_OBJECT DeviceObject,
3024                               IN PIRP           Irp,
3025                               IN AFSVolumeCB   *VolumeCB,
3026                               IN GUID          *AuthGroup,
3027                               IN AFSDirectoryCB *ParentDirCB,
3028                               IN AFSDirectoryCB *DirectoryCB,
3029                               OUT AFSFcb       **Fcb,
3030                               OUT AFSCcb       **Ccb)
3031 {
3032
3033     NTSTATUS ntStatus = STATUS_SUCCESS;
3034     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3035     PFILE_OBJECT pFileObject = NULL;
3036     LARGE_INTEGER liZero = {0,0};
3037     BOOLEAN bReleasePaging = FALSE, bReleaseFcb = FALSE;
3038     ULONG   ulAttributes = 0;
3039     LARGE_INTEGER liTime;
3040     ULONG ulCreateDisposition = 0;
3041     BOOLEAN bAllocatedCcb = FALSE, bAllocatedFcb = FALSE;
3042     PACCESS_MASK pDesiredAccess = NULL;
3043     USHORT usShareAccess;
3044     AFSObjectInfoCB *pParentObjectInfo = NULL;
3045     AFSObjectInfoCB *pObjectInfo = NULL;
3046     LONG lCount;
3047
3048     __Enter
3049     {
3050
3051         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
3052         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
3053
3054         pFileObject = pIrpSp->FileObject;
3055
3056         ulAttributes = pIrpSp->Parameters.Create.FileAttributes;
3057
3058         ulCreateDisposition = (pIrpSp->Parameters.Create.Options >> 24) & 0x000000ff;
3059
3060         if( BooleanFlagOn( VolumeCB->VolumeInformation.Characteristics, FILE_READ_ONLY_DEVICE))
3061         {
3062
3063             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3064                           AFS_TRACE_LEVEL_ERROR,
3065                           "AFSProcessOverwriteSupersede Request failed on %wZ due to read only volume\n",
3066                           Irp,
3067                           &DirectoryCB->NameInformation.FileName);
3068
3069             try_return( ntStatus = STATUS_MEDIA_WRITE_PROTECTED);
3070         }
3071
3072         pParentObjectInfo = ParentDirCB->ObjectInformation;
3073
3074         pObjectInfo = DirectoryCB->ObjectInformation;
3075
3076         //
3077         // Check if we should go and retrieve updated information for the node
3078         //
3079
3080         ntStatus = AFSValidateEntry( DirectoryCB,
3081                                      AuthGroup,
3082                                      TRUE,
3083                                      FALSE);
3084
3085         if( !NT_SUCCESS( ntStatus))
3086         {
3087
3088             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3089                           AFS_TRACE_LEVEL_ERROR,
3090                           "AFSProcessOverwriteSupersede (%08lX) Failed to validate entry %wZ Status %08lX\n",
3091                           Irp,
3092                           &DirectoryCB->NameInformation.FileName,
3093                           ntStatus);
3094
3095             try_return( ntStatus);
3096         }
3097
3098         //
3099         // Be sure we have an Fcb for the object block
3100         //
3101
3102         if( pObjectInfo->Fcb == NULL)
3103         {
3104
3105             ntStatus = AFSInitFcb( DirectoryCB);
3106
3107             *Fcb = pObjectInfo->Fcb;
3108
3109             if( !NT_SUCCESS( ntStatus))
3110             {
3111
3112                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3113                               AFS_TRACE_LEVEL_ERROR,
3114                               "AFSProcessOverwriteSupersede (%08lX) Failed to initialize fcb %wZ Status %08lX\n",
3115                               Irp,
3116                               &DirectoryCB->NameInformation.FileName,
3117                               ntStatus);
3118
3119                 try_return( ntStatus);
3120             }
3121
3122             if ( ntStatus != STATUS_REPARSE)
3123             {
3124
3125                 bAllocatedFcb = TRUE;
3126             }
3127
3128             ntStatus = STATUS_SUCCESS;
3129         }
3130         else
3131         {
3132
3133             AFSAcquireExcl( pObjectInfo->Fcb->Header.Resource,
3134                             TRUE);
3135         }
3136
3137         //
3138         // Increment the open count on this Fcb.
3139         //
3140
3141         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenReferenceCount);
3142
3143         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3144                       AFS_TRACE_LEVEL_VERBOSE,
3145                       "AFSProcessOverwriteSupersede Increment2 count on Fcb %08lX Cnt %d\n",
3146                       pObjectInfo->Fcb,
3147                       lCount);
3148
3149         bReleaseFcb = TRUE;
3150
3151         //
3152         // Check access on the entry
3153         //
3154
3155         if( pObjectInfo->Fcb->OpenHandleCount > 0)
3156         {
3157
3158             ntStatus = IoCheckShareAccess( *pDesiredAccess,
3159                                            usShareAccess,
3160                                            pFileObject,
3161                                            &pObjectInfo->Fcb->ShareAccess,
3162                                            FALSE);
3163
3164             if( !NT_SUCCESS( ntStatus))
3165             {
3166
3167                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3168                               AFS_TRACE_LEVEL_ERROR,
3169                               "AFSProcessOverwriteSupersede (%08lX) Access check failure %wZ Status %08lX\n",
3170                               Irp,
3171                               &DirectoryCB->NameInformation.FileName,
3172                               ntStatus);
3173
3174                 try_return( ntStatus);
3175             }
3176         }
3177
3178         //
3179         //  Before we actually truncate, check to see if the purge
3180         //  is going to fail.
3181         //
3182
3183         if( !MmCanFileBeTruncated( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
3184                                    &liZero))
3185         {
3186
3187             ntStatus = STATUS_USER_MAPPED_FILE;
3188
3189             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3190                           AFS_TRACE_LEVEL_ERROR,
3191                           "AFSProcessOverwriteSupersede (%08lX) File user mapped %wZ Status %08lX\n",
3192                           Irp,
3193                           &DirectoryCB->NameInformation.FileName,
3194                           ntStatus);
3195
3196             try_return( ntStatus);
3197         }
3198
3199         //
3200         // Initialize the Ccb for the file.
3201         //
3202
3203         ntStatus = AFSInitCcb( Ccb);
3204
3205         if( !NT_SUCCESS( ntStatus))
3206         {
3207
3208             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3209                           AFS_TRACE_LEVEL_ERROR,
3210                           "AFSProcessOverwriteSupersede (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
3211                           Irp,
3212                           &DirectoryCB->NameInformation.FileName,
3213                           ntStatus);
3214
3215             try_return( ntStatus);
3216         }
3217
3218         bAllocatedCcb = TRUE;
3219
3220         //
3221         // Initialize the Ccb
3222         //
3223
3224         (*Ccb)->DirectoryCB = DirectoryCB;
3225
3226         (*Ccb)->GrantedAccess = *pDesiredAccess;
3227
3228         //
3229         // Need to purge any data currently in the cache
3230         //
3231
3232         CcPurgeCacheSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
3233                              NULL,
3234                              0,
3235                              FALSE);
3236
3237         pObjectInfo->Fcb->Header.FileSize.QuadPart = 0;
3238         pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = 0;
3239         pObjectInfo->Fcb->Header.AllocationSize.QuadPart = 0;
3240
3241         pObjectInfo->EndOfFile.QuadPart = 0;
3242         pObjectInfo->AllocationSize.QuadPart = 0;
3243
3244         //
3245         // Trim down the extents. We do this BEFORE telling the service
3246         // the file is truncated since there is a potential race between
3247         // a worker thread releasing extents and us trimming
3248         //
3249
3250         AFSTrimExtents( pObjectInfo->Fcb,
3251                         &pObjectInfo->Fcb->Header.FileSize);
3252
3253         KeQuerySystemTime( &pObjectInfo->ChangeTime);
3254
3255         KeQuerySystemTime( &pObjectInfo->LastAccessTime);
3256
3257         //KeQuerySystemTime( &pObjectInfo->CreationTime);
3258
3259         KeQuerySystemTime( &pObjectInfo->LastWriteTime);
3260
3261         ntStatus = AFSUpdateFileInformation( &pParentObjectInfo->FileId,
3262                                              pObjectInfo,
3263                                              AuthGroup);
3264
3265         if( !NT_SUCCESS( ntStatus))
3266         {
3267
3268             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3269                           AFS_TRACE_LEVEL_ERROR,
3270                           "AFSProcessOverwriteSupersede (%08lX) Failed to update file information %wZ Status %08lX\n",
3271                           Irp,
3272                           &DirectoryCB->NameInformation.FileName,
3273                           ntStatus);
3274
3275             try_return( ntStatus);
3276         }
3277
3278         AFSAcquireExcl( pObjectInfo->Fcb->Header.PagingIoResource,
3279                         TRUE);
3280
3281         bReleasePaging = TRUE;
3282
3283         pFileObject->SectionObjectPointer = &pObjectInfo->Fcb->NPFcb->SectionObjectPointers;
3284
3285         pFileObject->FsContext = (void *)pObjectInfo->Fcb;
3286
3287         pFileObject->FsContext2 = (void *)*Ccb;
3288
3289         //
3290         // Set the update flag accordingly
3291         //
3292
3293         SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED |
3294                                           AFS_FCB_FLAG_UPDATE_CREATE_TIME |
3295                                           AFS_FCB_FLAG_UPDATE_CHANGE_TIME |
3296                                           AFS_FCB_FLAG_UPDATE_ACCESS_TIME |
3297                                           AFS_FCB_FLAG_UPDATE_LAST_WRITE_TIME);
3298
3299         CcSetFileSizes( pFileObject,
3300                         (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
3301
3302         AFSReleaseResource( pObjectInfo->Fcb->Header.PagingIoResource);
3303
3304         bReleasePaging = FALSE;
3305
3306         ulAttributes |= FILE_ATTRIBUTE_ARCHIVE;
3307
3308         if( ulCreateDisposition == FILE_SUPERSEDE)
3309         {
3310
3311             pObjectInfo->FileAttributes = ulAttributes;
3312
3313         }
3314         else
3315         {
3316
3317             pObjectInfo->FileAttributes |= ulAttributes;
3318         }
3319
3320         //
3321         // Save off the access for the open
3322         //
3323
3324         if( pObjectInfo->Fcb->OpenHandleCount > 0)
3325         {
3326
3327             IoUpdateShareAccess( pFileObject,
3328                                  &pObjectInfo->Fcb->ShareAccess);
3329         }
3330         else
3331         {
3332
3333             //
3334             // Set the access
3335             //
3336
3337             IoSetShareAccess( *pDesiredAccess,
3338                               usShareAccess,
3339                               pFileObject,
3340                               &pObjectInfo->Fcb->ShareAccess);
3341         }
3342
3343         //
3344         // Return the correct action
3345         //
3346
3347         if( ulCreateDisposition == FILE_SUPERSEDE)
3348         {
3349
3350             Irp->IoStatus.Information = FILE_SUPERSEDED;
3351         }
3352         else
3353         {
3354
3355             Irp->IoStatus.Information = FILE_OVERWRITTEN;
3356         }
3357
3358         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenHandleCount);
3359
3360         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3361                       AFS_TRACE_LEVEL_VERBOSE,
3362                       "AFSProcessOverwriteSupersede Increment handle count on Fcb %08lX Cnt %d\n",
3363                       pObjectInfo->Fcb,
3364                       lCount);
3365
3366         //
3367         // Increment the open reference and handle on the parent node
3368         //
3369
3370         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
3371
3372         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3373                       AFS_TRACE_LEVEL_VERBOSE,
3374                       "AFSProcessOverwriteSupersede Increment child open handle count on Parent object %08lX Cnt %d\n",
3375                       pObjectInfo->ParentObjectInformation,
3376                       lCount);
3377
3378         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
3379
3380         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3381                       AFS_TRACE_LEVEL_VERBOSE,
3382                       "AFSProcessOverwriteSupersede Increment child open ref count on Parent object %08lX Cnt %d\n",
3383                       pObjectInfo->ParentObjectInformation,
3384                       lCount);
3385
3386         *Fcb = pObjectInfo->Fcb;
3387
3388 try_exit:
3389
3390         if( bReleasePaging)
3391         {
3392
3393             AFSReleaseResource( pObjectInfo->Fcb->Header.PagingIoResource);
3394         }
3395
3396         if( bReleaseFcb)
3397         {
3398
3399             if( !NT_SUCCESS( ntStatus))
3400             {
3401                 //
3402                 // Decrement the open count on this Fcb.
3403                 //
3404
3405                 lCount = InterlockedDecrement( &pObjectInfo->Fcb->OpenReferenceCount);
3406
3407                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3408                               AFS_TRACE_LEVEL_VERBOSE,
3409                               "AFSProcessOverwriteSupersede Decrement2 count on Fcb %08lX Cnt %d\n",
3410                               pObjectInfo->Fcb,
3411                               lCount);
3412             }
3413
3414             AFSReleaseResource( pObjectInfo->Fcb->Header.Resource);
3415         }
3416
3417         if( !NT_SUCCESS( ntStatus))
3418         {
3419
3420             if( bAllocatedCcb)
3421             {
3422
3423                 AFSRemoveCcb( NULL,
3424                               *Ccb);
3425             }
3426
3427             *Ccb = NULL;
3428
3429             if( bAllocatedFcb)
3430             {
3431
3432                 AFSRemoveFcb( &pObjectInfo->Fcb);
3433             }
3434
3435             *Fcb = NULL;
3436         }
3437     }
3438
3439     return ntStatus;
3440 }
3441
3442 NTSTATUS
3443 AFSControlDeviceCreate( IN PIRP Irp)
3444 {
3445
3446     NTSTATUS ntStatus = STATUS_SUCCESS;
3447
3448     __Enter
3449     {
3450
3451         //
3452         // For now, jsut let the open happen
3453         //
3454
3455         Irp->IoStatus.Information = FILE_OPENED;
3456     }
3457
3458     return ntStatus;
3459 }
3460
3461 NTSTATUS
3462 AFSOpenIOCtlFcb( IN PIRP Irp,
3463                  IN GUID *AuthGroup,
3464                  IN AFSDirectoryCB *ParentDirCB,
3465                  OUT AFSFcb **Fcb,
3466                  OUT AFSCcb **Ccb)
3467 {
3468
3469     NTSTATUS ntStatus = STATUS_SUCCESS;
3470     PFILE_OBJECT pFileObject = NULL;
3471     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3472     BOOLEAN bReleaseFcb = FALSE, bAllocatedCcb = FALSE, bAllocatedFcb = FALSE;
3473     UNICODE_STRING uniFullFileName;
3474     AFSPIOCtlOpenCloseRequestCB stPIOCtlOpen;
3475     AFSFileID stFileID;
3476     AFSObjectInfoCB *pParentObjectInfo = NULL;
3477     LONG lCount;
3478
3479     __Enter
3480     {
3481
3482         pFileObject = pIrpSp->FileObject;
3483
3484         pParentObjectInfo = ParentDirCB->ObjectInformation;
3485
3486         //
3487         // If we haven't initialized the PIOCtl DirectoryCB for this directory then do it now
3488         //
3489
3490         if( pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB == NULL)
3491         {
3492
3493             ntStatus = AFSInitPIOCtlDirectoryCB( pParentObjectInfo);
3494
3495             if( !NT_SUCCESS( ntStatus))
3496             {
3497
3498                 try_return( ntStatus);
3499             }
3500         }
3501
3502         if( pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb == NULL)
3503         {
3504
3505             //
3506             // Allocate and initialize the Fcb for the file.
3507             //
3508
3509             ntStatus = AFSInitFcb( pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB);
3510
3511             *Fcb = pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb;
3512
3513             if( !NT_SUCCESS( ntStatus))
3514             {
3515
3516                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3517                               AFS_TRACE_LEVEL_ERROR,
3518                               "AFSOpenIOCtlFcb (%08lX) Failed to initialize fcb Status %08lX\n",
3519                               Irp,
3520                               ntStatus);
3521
3522                 try_return( ntStatus);
3523             }
3524
3525             if ( ntStatus != STATUS_REPARSE)
3526             {
3527
3528                 bAllocatedFcb = TRUE;
3529             }
3530
3531             ntStatus = STATUS_SUCCESS;
3532         }
3533         else
3534         {
3535
3536             *Fcb = pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb;
3537
3538             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
3539                             TRUE);
3540         }
3541
3542         //
3543         // Increment the open reference and handle on the node
3544         //
3545
3546         lCount = InterlockedIncrement( &(*Fcb)->OpenReferenceCount);
3547
3548         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3549                       AFS_TRACE_LEVEL_VERBOSE,
3550                       "AFSOpenIOCtlFcb Increment count on Fcb %08lX Cnt %d\n",
3551                       (*Fcb),
3552                       lCount);
3553
3554         bReleaseFcb = TRUE;
3555
3556         //
3557         // Initialize the Ccb for the file.
3558         //
3559
3560         ntStatus = AFSInitCcb( Ccb);
3561
3562         if( !NT_SUCCESS( ntStatus))
3563         {
3564
3565             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3566                           AFS_TRACE_LEVEL_ERROR,
3567                           "AFSOpenIOCtlFcb (%08lX) Failed to initialize ccb Status %08lX\n",
3568                           Irp,
3569                           ntStatus);
3570
3571             try_return( ntStatus);
3572         }
3573
3574         bAllocatedCcb = TRUE;
3575
3576         //
3577         // Setup the Ccb
3578         //
3579
3580         (*Ccb)->DirectoryCB = pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB;
3581
3582         //
3583         // Set the PIOCtl index
3584         //
3585
3586         (*Ccb)->RequestID = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.OpenRequestIndex);
3587
3588         RtlZeroMemory( &stPIOCtlOpen,
3589                        sizeof( AFSPIOCtlOpenCloseRequestCB));
3590
3591         stPIOCtlOpen.RequestId = (*Ccb)->RequestID;
3592
3593         stPIOCtlOpen.RootId = pParentObjectInfo->VolumeCB->ObjectInformation.FileId;
3594
3595         RtlZeroMemory( &stFileID,
3596                        sizeof( AFSFileID));
3597
3598         //
3599         // The parent directory FID of the node
3600         //
3601
3602         stFileID = pParentObjectInfo->FileId;
3603
3604         //
3605         // Issue the open request to the service
3606         //
3607
3608         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_PIOCTL_OPEN,
3609                                       AFS_REQUEST_FLAG_SYNCHRONOUS,
3610                                       AuthGroup,
3611                                       NULL,
3612                                       &stFileID,
3613                                       (void *)&stPIOCtlOpen,
3614                                       sizeof( AFSPIOCtlOpenCloseRequestCB),
3615                                       NULL,
3616                                       NULL);
3617
3618         if( !NT_SUCCESS( ntStatus))
3619         {
3620
3621             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3622                           AFS_TRACE_LEVEL_ERROR,
3623                           "AFSOpenIOCtlFcb (%08lX) Failed service open Status %08lX\n",
3624                           Irp,
3625                           ntStatus);
3626
3627             try_return( ntStatus);
3628         }
3629
3630         //
3631         // Reference the directory entry
3632         //
3633
3634         lCount = InterlockedIncrement( &((*Ccb)->DirectoryCB->OpenReferenceCount));
3635
3636         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3637                       AFS_TRACE_LEVEL_VERBOSE,
3638                       "AFSOpenIOCtlFcb Increment count on %wZ DE %p Ccb %p Cnt %d\n",
3639                       &(*Ccb)->DirectoryCB->NameInformation.FileName,
3640                       (*Ccb)->DirectoryCB,
3641                       (*Ccb),
3642                       lCount);
3643
3644         //
3645         // Increment the handle on the node
3646         //
3647
3648         lCount = InterlockedIncrement( &(*Fcb)->OpenHandleCount);
3649
3650         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3651                       AFS_TRACE_LEVEL_VERBOSE,
3652                       "AFSOpenIOCtlFcb Increment handle count on Fcb %08lX Cnt %d\n",
3653                       (*Fcb),
3654                       lCount);
3655
3656         //
3657         // Increment the open reference and handle on the parent node
3658         //
3659
3660         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenHandleCount);
3661
3662         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3663                       AFS_TRACE_LEVEL_VERBOSE,
3664                       "AFSOpenIOCtlFcb Increment child open handle count on Parent object %08lX Cnt %d\n",
3665                       pParentObjectInfo,
3666                       lCount);
3667
3668         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenReferenceCount);
3669
3670         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3671                       AFS_TRACE_LEVEL_VERBOSE,
3672                       "AFSOpenIOCtlFcb Increment child open ref count on Parent object %08lX Cnt %d\n",
3673                       pParentObjectInfo,
3674                       lCount);
3675
3676         //
3677         // Return the open result for this file
3678         //
3679
3680         Irp->IoStatus.Information = FILE_OPENED;
3681
3682 try_exit:
3683
3684         //
3685         //Dereference the passed in parent since the returned dir entry
3686         // is already referenced
3687         //
3688
3689         lCount = InterlockedDecrement( &ParentDirCB->OpenReferenceCount);
3690
3691         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3692                       AFS_TRACE_LEVEL_VERBOSE,
3693                       "AFSOpenIOCtlFcb Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
3694                       &ParentDirCB->NameInformation.FileName,
3695                       ParentDirCB,
3696                       NULL,
3697                       lCount);
3698
3699         //
3700         // If we created the Fcb we need to release the resources
3701         //
3702
3703         if( bReleaseFcb)
3704         {
3705
3706             if( !NT_SUCCESS( ntStatus))
3707             {
3708                 //
3709                 // Decrement the open reference and handle on the node
3710                 //
3711
3712                 lCount = InterlockedDecrement( &(*Fcb)->OpenReferenceCount);
3713
3714                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3715                               AFS_TRACE_LEVEL_VERBOSE,
3716                               "AFSOpenIOCtlFcb Decrement count on Fcb %08lX Cnt %d\n",
3717                               (*Fcb),
3718                               lCount);
3719             }
3720
3721             AFSReleaseResource( &(*Fcb)->NPFcb->Resource);
3722         }
3723
3724         if( !NT_SUCCESS( ntStatus))
3725         {
3726
3727             if( bAllocatedCcb)
3728             {
3729
3730                 AFSRemoveCcb( NULL,
3731                               *Ccb);
3732             }
3733
3734             *Ccb = NULL;
3735
3736             if( bAllocatedFcb)
3737             {
3738
3739                 //
3740                 // Need to tear down this Fcb since it is not in the tree for the worker thread
3741                 //
3742
3743                 AFSRemoveFcb( &pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
3744             }
3745
3746             *Fcb = NULL;
3747         }
3748     }
3749
3750     return ntStatus;
3751 }
3752
3753 NTSTATUS
3754 AFSOpenSpecialShareFcb( IN PIRP Irp,
3755                         IN GUID *AuthGroup,
3756                         IN AFSDirectoryCB *DirectoryCB,
3757                         OUT AFSFcb **Fcb,
3758                         OUT AFSCcb **Ccb)
3759 {
3760
3761     NTSTATUS ntStatus = STATUS_SUCCESS;
3762     PFILE_OBJECT pFileObject = NULL;
3763     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3764     BOOLEAN bReleaseFcb = FALSE, bAllocatedCcb = FALSE, bAllocateFcb = FALSE;
3765     AFSObjectInfoCB *pParentObjectInfo = NULL;
3766     AFSPipeOpenCloseRequestCB stPipeOpen;
3767     LONG lCount;
3768
3769     __Enter
3770     {
3771
3772         pFileObject = pIrpSp->FileObject;
3773
3774         AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3775                       AFS_TRACE_LEVEL_VERBOSE_2,
3776                       "AFSOpenSpecialShareFcb (%08lX) Processing Share %wZ open\n",
3777                       Irp,
3778                       &DirectoryCB->NameInformation.FileName);
3779
3780         pParentObjectInfo = DirectoryCB->ObjectInformation->ParentObjectInformation;
3781
3782         if( DirectoryCB->ObjectInformation->Fcb == NULL)
3783         {
3784
3785             //
3786             // Allocate and initialize the Fcb for the file.
3787             //
3788
3789             ntStatus = AFSInitFcb( DirectoryCB);
3790
3791             *Fcb = DirectoryCB->ObjectInformation->Fcb;
3792
3793             if( !NT_SUCCESS( ntStatus))
3794             {
3795
3796                 AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3797                               AFS_TRACE_LEVEL_ERROR,
3798                               "AFSOpenSpecialShareFcb (%08lX) Failed to initialize fcb Status %08lX\n",
3799                               Irp,
3800                               ntStatus);
3801
3802                 try_return( ntStatus);
3803             }
3804
3805             if ( ntStatus != STATUS_REPARSE)
3806             {
3807
3808                 bAllocateFcb = TRUE;
3809             }
3810
3811             ntStatus = STATUS_SUCCESS;
3812         }
3813         else
3814         {
3815
3816             *Fcb = DirectoryCB->ObjectInformation->Fcb;
3817
3818             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
3819                             TRUE);
3820         }
3821
3822         //
3823         // Increment the open count on this Fcb
3824         //
3825
3826         lCount = InterlockedIncrement( &(*Fcb)->OpenReferenceCount);
3827
3828         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3829                       AFS_TRACE_LEVEL_VERBOSE,
3830                       "AFSOpenSpecialShareFcb Increment count on Fcb %08lX Cnt %d\n",
3831                       (*Fcb),
3832                       lCount);
3833
3834         bReleaseFcb = TRUE;
3835
3836         //
3837         // Initialize the Ccb for the file.
3838         //
3839
3840         ntStatus = AFSInitCcb( Ccb);
3841
3842         if( !NT_SUCCESS( ntStatus))
3843         {
3844
3845             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3846                           AFS_TRACE_LEVEL_ERROR,
3847                           "AFSOpenSpecialShareFcb (%08lX) Failed to initialize ccb Status %08lX\n",
3848                           Irp,
3849                           ntStatus);
3850
3851             try_return( ntStatus);
3852         }
3853
3854         bAllocatedCcb = TRUE;
3855
3856         //
3857         // Setup the Ccb
3858         //
3859
3860         (*Ccb)->DirectoryCB = DirectoryCB;
3861
3862         //
3863         // Call the service to open the share
3864         //
3865
3866         (*Ccb)->RequestID = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.OpenRequestIndex);
3867
3868         RtlZeroMemory( &stPipeOpen,
3869                        sizeof( AFSPipeOpenCloseRequestCB));
3870
3871         stPipeOpen.RequestId = (*Ccb)->RequestID;
3872
3873         stPipeOpen.RootId = pParentObjectInfo->VolumeCB->ObjectInformation.FileId;
3874
3875         //
3876         // Issue the open request to the service
3877         //
3878
3879         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_PIPE_OPEN,
3880                                       AFS_REQUEST_FLAG_SYNCHRONOUS,
3881                                       AuthGroup,
3882                                       &DirectoryCB->NameInformation.FileName,
3883                                       NULL,
3884                                       (void *)&stPipeOpen,
3885                                       sizeof( AFSPipeOpenCloseRequestCB),
3886                                       NULL,
3887                                       NULL);
3888
3889         if( !NT_SUCCESS( ntStatus))
3890         {
3891
3892             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3893                           AFS_TRACE_LEVEL_ERROR,
3894                           "AFSOpenSpecialShareFcb (%08lX) Failed service open Status %08lX\n",
3895                           Irp,
3896                           ntStatus);
3897
3898             try_return( ntStatus);
3899         }
3900
3901         lCount = InterlockedIncrement( &(*Fcb)->OpenHandleCount);
3902
3903         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3904                       AFS_TRACE_LEVEL_VERBOSE,
3905                       "AFSOpenSpecialShareFcb Increment handle count on Fcb %08lX Cnt %d\n",
3906                       (*Fcb),
3907                       lCount);
3908
3909         //
3910         // Increment the open reference and handle on the parent node
3911         //
3912
3913         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenHandleCount);
3914
3915         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3916                       AFS_TRACE_LEVEL_VERBOSE,
3917                       "AFSOpenSpecialShareFcb Increment child open handle count on Parent object %08lX Cnt %d\n",
3918                       pParentObjectInfo,
3919                       lCount);
3920
3921         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenReferenceCount);
3922
3923         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3924                       AFS_TRACE_LEVEL_VERBOSE,
3925                       "AFSOpenSpecialShareFcb Increment child open ref count on Parent object %08lX Cnt %d\n",
3926                       pParentObjectInfo,
3927                       lCount);
3928
3929         //
3930         // Return the open result for this file
3931         //
3932
3933         Irp->IoStatus.Information = FILE_OPENED;
3934
3935 try_exit:
3936
3937         if( bReleaseFcb)
3938         {
3939
3940             if( !NT_SUCCESS( ntStatus))
3941             {
3942                 //
3943                 // Decrement the open count on this Fcb
3944                 //
3945
3946                 lCount = InterlockedDecrement( &(*Fcb)->OpenReferenceCount);
3947
3948                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3949                               AFS_TRACE_LEVEL_VERBOSE,
3950                               "AFSOpenSpecialShareFcb Decrement count on Fcb %08lX Cnt %d\n",
3951                               (*Fcb),
3952                               lCount);
3953             }
3954
3955             AFSReleaseResource( &(*Fcb)->NPFcb->Resource);
3956         }
3957
3958         if( !NT_SUCCESS( ntStatus))
3959         {
3960
3961             if( bAllocatedCcb)
3962             {
3963
3964                 AFSRemoveCcb( NULL,
3965                               *Ccb);
3966             }
3967
3968             *Ccb = NULL;
3969
3970             if( bAllocateFcb)
3971             {
3972
3973                 //
3974                 // Need to tear down this Fcb since it is not in the tree for the worker thread
3975                 //
3976
3977                 AFSRemoveFcb( &DirectoryCB->ObjectInformation->Fcb);
3978             }
3979
3980             *Fcb = NULL;
3981         }
3982     }
3983
3984     return ntStatus;
3985 }