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 AFSOpenAFSRoot( 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                           "AFSOpenAFSRoot (%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 = AFSGlobalRoot->DirectoryCB;
1296
1297         //
1298         // Increment the open count on this Fcb
1299         //
1300
1301         lCount = InterlockedIncrement( &AFSGlobalRoot->RootFcb->OpenReferenceCount);
1302
1303         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1304                       AFS_TRACE_LEVEL_VERBOSE,
1305                       "AFSOpenAFSRoot Increment count on Fcb %08lX Cnt %d\n",
1306                       AFSGlobalRoot->RootFcb,
1307                       lCount);
1308
1309         lCount = InterlockedIncrement( &AFSGlobalRoot->RootFcb->OpenHandleCount);
1310
1311         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1312                       AFS_TRACE_LEVEL_VERBOSE,
1313                       "AFSOpenAFSRoot Increment handle count on Fcb %08lX Cnt %d\n",
1314                       AFSGlobalRoot->RootFcb,
1315                       lCount);
1316
1317         *Fcb = AFSGlobalRoot->RootFcb;
1318
1319         //
1320         // Return the open result for this file
1321         //
1322
1323         Irp->IoStatus.Information = FILE_OPENED;
1324
1325 try_exit:
1326
1327         NOTHING;
1328     }
1329
1330     return ntStatus;
1331 }
1332
1333 NTSTATUS
1334 AFSOpenRoot( IN PIRP Irp,
1335              IN AFSVolumeCB *VolumeCB,
1336              IN GUID *AuthGroup,
1337              OUT AFSFcb **RootFcb,
1338              OUT AFSCcb **Ccb)
1339 {
1340
1341     NTSTATUS ntStatus = STATUS_SUCCESS;
1342     PFILE_OBJECT pFileObject = NULL;
1343     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1344     PACCESS_MASK pDesiredAccess = NULL;
1345     USHORT usShareAccess;
1346     ULONG ulOptions;
1347     BOOLEAN bAllocatedCcb = FALSE;
1348     BOOLEAN bReleaseFcb = FALSE;
1349     AFSFileOpenCB   stOpenCB;
1350     AFSFileOpenResultCB stOpenResultCB;
1351     ULONG       ulResultLen = 0;
1352     LONG        lCount;
1353
1354     __Enter
1355     {
1356
1357         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
1358         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
1359         ulOptions = pIrpSp->Parameters.Create.Options;
1360
1361         pFileObject = pIrpSp->FileObject;
1362
1363         if( BooleanFlagOn( ulOptions, FILE_NON_DIRECTORY_FILE))
1364         {
1365
1366             ntStatus = STATUS_FILE_IS_A_DIRECTORY;
1367
1368             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1369                           AFS_TRACE_LEVEL_ERROR,
1370                           "AFSOpenRoot (%08lX) Attempt to open root as file Status %08lX\n",
1371                           Irp,
1372                           ntStatus);
1373
1374             try_return( ntStatus);
1375         }
1376
1377         //
1378         // Check if we should go and retrieve updated information for the node
1379         //
1380
1381         ntStatus = AFSValidateEntry( VolumeCB->DirectoryCB,
1382                                      AuthGroup,
1383                                      TRUE,
1384                                      FALSE);
1385
1386         if( !NT_SUCCESS( ntStatus))
1387         {
1388
1389             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1390                           AFS_TRACE_LEVEL_ERROR,
1391                           "AFSOpenRoot (%08lX) Failed to validate root entry Status %08lX\n",
1392                           Irp,
1393                           ntStatus);
1394
1395             try_return( ntStatus);
1396         }
1397
1398         //
1399         // Check with the service that we can open the file
1400         //
1401
1402         RtlZeroMemory( &stOpenCB,
1403                        sizeof( AFSFileOpenCB));
1404
1405         stOpenCB.DesiredAccess = *pDesiredAccess;
1406
1407         stOpenCB.ShareAccess = usShareAccess;
1408
1409         stOpenResultCB.GrantedAccess = 0;
1410
1411         ulResultLen = sizeof( AFSFileOpenResultCB);
1412
1413         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_OPEN_FILE,
1414                                       AFS_REQUEST_FLAG_SYNCHRONOUS | AFS_REQUEST_FLAG_HOLD_FID,
1415                                       AuthGroup,
1416                                       NULL,
1417                                       &VolumeCB->ObjectInformation.FileId,
1418                                       (void *)&stOpenCB,
1419                                       sizeof( AFSFileOpenCB),
1420                                       (void *)&stOpenResultCB,
1421                                       &ulResultLen);
1422
1423         if( !NT_SUCCESS( ntStatus))
1424         {
1425
1426             UNICODE_STRING uniGUID;
1427
1428             uniGUID.Length = 0;
1429             uniGUID.MaximumLength = 0;
1430             uniGUID.Buffer = NULL;
1431
1432             if( AuthGroup != NULL)
1433             {
1434                 RtlStringFromGUID( *AuthGroup,
1435                                    &uniGUID);
1436             }
1437
1438             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1439                           AFS_TRACE_LEVEL_ERROR,
1440                           "AFSOpenRoot (%08lX) Failed open in service volume %08lX-%08lX AuthGroup %wZ Status %08lX\n",
1441                           Irp,
1442                           VolumeCB->ObjectInformation.FileId.Cell,
1443                           VolumeCB->ObjectInformation.FileId.Volume,
1444                           &uniGUID,
1445                           ntStatus);
1446
1447             if( AuthGroup != NULL)
1448             {
1449                 RtlFreeUnicodeString( &uniGUID);
1450             }
1451
1452             try_return( ntStatus);
1453         }
1454
1455         //
1456         // If the entry is not initialized then do it now
1457         //
1458
1459         if( !BooleanFlagOn( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
1460         {
1461
1462             AFSAcquireExcl( VolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock,
1463                             TRUE);
1464
1465             if( !BooleanFlagOn( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED))
1466             {
1467
1468                 ntStatus = AFSEnumerateDirectory( AuthGroup,
1469                                                   &VolumeCB->ObjectInformation,
1470                                                   TRUE);
1471
1472                 if( !NT_SUCCESS( ntStatus))
1473                 {
1474
1475                     AFSReleaseResource( VolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
1476
1477                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1478                                   AFS_TRACE_LEVEL_ERROR,
1479                                   "AFSOpenRoot (%08lX) Failed to enumerate directory Status %08lX\n",
1480                                   Irp,
1481                                   ntStatus);
1482
1483                     try_return( ntStatus);
1484                 }
1485
1486                 SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1487             }
1488
1489             AFSReleaseResource( VolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock);
1490         }
1491
1492         //
1493         // If the root fcb has been initialized then check access otherwise
1494         // init the volume fcb
1495         //
1496
1497         if( VolumeCB->RootFcb == NULL)
1498         {
1499
1500             ntStatus = AFSInitRootFcb( (ULONGLONG)PsGetCurrentProcessId(),
1501                                        VolumeCB);
1502
1503             if( !NT_SUCCESS( ntStatus))
1504             {
1505
1506                 try_return( ntStatus);
1507             }
1508         }
1509         else
1510         {
1511
1512             AFSAcquireExcl( VolumeCB->RootFcb->Header.Resource,
1513                             TRUE);
1514         }
1515
1516         bReleaseFcb = TRUE;
1517
1518         //
1519         // If there are current opens on the Fcb, check the access.
1520         //
1521
1522         if( VolumeCB->RootFcb->OpenHandleCount > 0)
1523         {
1524
1525             ntStatus = IoCheckShareAccess( *pDesiredAccess,
1526                                            usShareAccess,
1527                                            pFileObject,
1528                                            &VolumeCB->RootFcb->ShareAccess,
1529                                            FALSE);
1530
1531             if( !NT_SUCCESS( ntStatus))
1532             {
1533
1534                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1535                               AFS_TRACE_LEVEL_ERROR,
1536                               "AFSOpenRoot (%08lX) Access check failure Status %08lX\n",
1537                               Irp,
1538                               ntStatus);
1539
1540                 try_return( ntStatus);
1541             }
1542         }
1543
1544         //
1545         // Initialize the Ccb for the file.
1546         //
1547
1548         ntStatus = AFSInitCcb( Ccb);
1549
1550         if( !NT_SUCCESS( ntStatus))
1551         {
1552
1553             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1554                           AFS_TRACE_LEVEL_ERROR,
1555                           "AFSOpenRoot (%08lX) Failed to allocate Ccb Status %08lX\n",
1556                           Irp,
1557                           ntStatus);
1558
1559             try_return( ntStatus);
1560         }
1561
1562         bAllocatedCcb = TRUE;
1563
1564         //
1565         // Setup the ccb
1566         //
1567
1568         (*Ccb)->DirectoryCB = VolumeCB->DirectoryCB;
1569
1570         (*Ccb)->GrantedAccess = *pDesiredAccess;
1571
1572         //
1573         // OK, update the share access on the fileobject
1574         //
1575
1576         if( VolumeCB->RootFcb->OpenHandleCount > 0)
1577         {
1578
1579             IoUpdateShareAccess( pFileObject,
1580                                  &VolumeCB->RootFcb->ShareAccess);
1581         }
1582         else
1583         {
1584
1585             //
1586             // Set the access
1587             //
1588
1589             IoSetShareAccess( *pDesiredAccess,
1590                               usShareAccess,
1591                               pFileObject,
1592                               &VolumeCB->RootFcb->ShareAccess);
1593         }
1594
1595         //
1596         // Increment the open count on this Fcb
1597         //
1598
1599         lCount = InterlockedIncrement( &VolumeCB->RootFcb->OpenReferenceCount);
1600
1601         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1602                       AFS_TRACE_LEVEL_VERBOSE,
1603                       "AFSOpenRoot Increment count on Fcb %08lX Cnt %d\n",
1604                       VolumeCB->RootFcb,
1605                       lCount);
1606
1607         lCount = InterlockedIncrement( &VolumeCB->RootFcb->OpenHandleCount);
1608
1609         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1610                       AFS_TRACE_LEVEL_VERBOSE,
1611                       "AFSOpenRoot Increment handle count on Fcb %08lX Cnt %d\n",
1612                       VolumeCB->RootFcb,
1613                       lCount);
1614
1615         //
1616         // Indicate the object is held
1617         //
1618
1619         SetFlag( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_HELD_IN_SERVICE);
1620
1621         //
1622         // Return the open result for this file
1623         //
1624
1625         Irp->IoStatus.Information = FILE_OPENED;
1626
1627         *RootFcb = VolumeCB->RootFcb;
1628
1629 try_exit:
1630
1631         if( bReleaseFcb)
1632         {
1633
1634             AFSReleaseResource( VolumeCB->RootFcb->Header.Resource);
1635         }
1636
1637         if( !NT_SUCCESS( ntStatus))
1638         {
1639
1640             if( bAllocatedCcb)
1641             {
1642
1643                 AFSRemoveCcb( NULL,
1644                               *Ccb);
1645
1646                 *Ccb = NULL;
1647             }
1648
1649             Irp->IoStatus.Information = 0;
1650         }
1651     }
1652
1653     return ntStatus;
1654 }
1655
1656 NTSTATUS
1657 AFSProcessCreate( IN PIRP               Irp,
1658                   IN GUID              *AuthGroup,
1659                   IN AFSVolumeCB       *VolumeCB,
1660                   IN AFSDirectoryCB    *ParentDirCB,
1661                   IN PUNICODE_STRING    FileName,
1662                   IN PUNICODE_STRING    ComponentName,
1663                   IN PUNICODE_STRING    FullFileName,
1664                   OUT AFSFcb          **Fcb,
1665                   OUT AFSCcb          **Ccb)
1666 {
1667
1668     NTSTATUS ntStatus = STATUS_SUCCESS;
1669     PFILE_OBJECT pFileObject = NULL;
1670     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1671     ULONG ulOptions = 0;
1672     ULONG ulShareMode = 0;
1673     ULONG ulAccess = 0;
1674     ULONG ulAttributes = 0;
1675     LARGE_INTEGER   liAllocationSize = {0,0};
1676     BOOLEAN bFileCreated = FALSE, bReleaseFcb = FALSE, bAllocatedCcb = FALSE;
1677     BOOLEAN bAllocatedFcb = FALSE;
1678     PACCESS_MASK pDesiredAccess = NULL;
1679     USHORT usShareAccess;
1680     AFSDirectoryCB *pDirEntry = NULL;
1681     AFSObjectInfoCB *pParentObjectInfo = NULL;
1682     AFSObjectInfoCB *pObjectInfo = NULL;
1683     LONG lCount;
1684
1685     __Enter
1686     {
1687
1688         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
1689         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
1690
1691         pFileObject = pIrpSp->FileObject;
1692
1693         //
1694         // Extract out the options
1695         //
1696
1697         ulOptions = pIrpSp->Parameters.Create.Options;
1698
1699         //
1700         // We pass all attributes they want to apply to the file to the create
1701         //
1702
1703         ulAttributes = pIrpSp->Parameters.Create.FileAttributes;
1704
1705         //
1706         // If this is a directory create then set the attribute correctly
1707         //
1708
1709         if( ulOptions & FILE_DIRECTORY_FILE)
1710         {
1711
1712             ulAttributes |= FILE_ATTRIBUTE_DIRECTORY;
1713         }
1714
1715         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1716                       AFS_TRACE_LEVEL_VERBOSE,
1717                       "AFSProcessCreate (%08lX) Creating file %wZ Attributes %08lX\n",
1718                       Irp,
1719                       FullFileName,
1720                       ulAttributes);
1721
1722         if( BooleanFlagOn( VolumeCB->VolumeInformation.Characteristics, FILE_READ_ONLY_DEVICE))
1723         {
1724
1725             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1726                           AFS_TRACE_LEVEL_ERROR,
1727                           "AFSProcessCreate Request failed due to read only volume %wZ\n",
1728                           FullFileName);
1729
1730             try_return( ntStatus = STATUS_MEDIA_WRITE_PROTECTED);
1731         }
1732
1733         pParentObjectInfo = ParentDirCB->ObjectInformation;
1734
1735         //
1736         // Allocate and insert the direntry into the parent node
1737         //
1738
1739         ntStatus = AFSCreateDirEntry( AuthGroup,
1740                                       pParentObjectInfo,
1741                                       ParentDirCB,
1742                                       FileName,
1743                                       ComponentName,
1744                                       ulAttributes,
1745                                       &pDirEntry);
1746
1747         if( !NT_SUCCESS( ntStatus))
1748         {
1749
1750             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1751                           AFS_TRACE_LEVEL_ERROR,
1752                           "AFSProcessCreate (%08lX) Failed to create directory entry %wZ Status %08lX\n",
1753                           Irp,
1754                           FullFileName,
1755                           ntStatus);
1756
1757             try_return( ntStatus);
1758         }
1759
1760         bFileCreated = TRUE;
1761
1762         pObjectInfo = pDirEntry->ObjectInformation;
1763
1764         if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED) ||
1765             pObjectInfo->FileType == AFS_FILE_TYPE_UNKNOWN)
1766         {
1767
1768             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1769                           AFS_TRACE_LEVEL_VERBOSE,
1770                           "AFSProcessCreate (%08lX) Evaluating object %wZ FID %08lX-%08lX-%08lX-%08lX\n",
1771                           Irp,
1772                           &pDirEntry->NameInformation.FileName,
1773                           pObjectInfo->FileId.Cell,
1774                           pObjectInfo->FileId.Volume,
1775                           pObjectInfo->FileId.Vnode,
1776                           pObjectInfo->FileId.Unique);
1777
1778             ntStatus = AFSEvaluateNode( AuthGroup,
1779                                         pDirEntry);
1780
1781             if( !NT_SUCCESS( ntStatus))
1782             {
1783
1784                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1785                               AFS_TRACE_LEVEL_ERROR,
1786                               "AFSProcessCreate (%08lX) Failed to evaluate object %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
1787                               Irp,
1788                               &pDirEntry->NameInformation.FileName,
1789                               pObjectInfo->FileId.Cell,
1790                               pObjectInfo->FileId.Volume,
1791                               pObjectInfo->FileId.Vnode,
1792                               pObjectInfo->FileId.Unique,
1793                               ntStatus);
1794
1795                 try_return( ntStatus);
1796             }
1797
1798             ClearFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_NOT_EVALUATED);
1799         }
1800
1801         //
1802         // We may have raced and the Fcb is already created
1803         //
1804
1805         if( pObjectInfo->Fcb != NULL)
1806         {
1807
1808             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1809                           AFS_TRACE_LEVEL_VERBOSE,
1810                           "AFSProcessCreate (%08lX) Not allocating Fcb for file %wZ\n",
1811                           Irp,
1812                           FullFileName);
1813
1814             *Fcb = pObjectInfo->Fcb;
1815
1816             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
1817                             TRUE);
1818         }
1819         else
1820         {
1821
1822             //
1823             // Allocate and initialize the Fcb for the file.
1824             //
1825
1826             ntStatus = AFSInitFcb( pDirEntry);
1827
1828             *Fcb = pObjectInfo->Fcb;
1829
1830             if( !NT_SUCCESS( ntStatus))
1831             {
1832
1833                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1834                               AFS_TRACE_LEVEL_ERROR,
1835                               "AFSProcessCreate (%08lX) Failed to initialize fcb %wZ Status %08lX\n",
1836                               Irp,
1837                               FullFileName,
1838                               ntStatus);
1839
1840                 try_return( ntStatus);
1841             }
1842
1843             if ( ntStatus != STATUS_REPARSE)
1844             {
1845
1846                 bAllocatedFcb = TRUE;
1847             }
1848
1849             ntStatus = STATUS_SUCCESS;
1850         }
1851
1852         //
1853         // Increment the open count on this Fcb
1854         //
1855
1856         lCount = InterlockedIncrement( &(*Fcb)->OpenReferenceCount);
1857
1858         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1859                       AFS_TRACE_LEVEL_VERBOSE,
1860                       "AFSProcessCreate Increment count on Fcb %08lX Cnt %d\n",
1861                       *Fcb,
1862                       lCount);
1863
1864         bReleaseFcb = TRUE;
1865
1866         //
1867         // Initialize the Ccb for the file.
1868         //
1869
1870         ntStatus = AFSInitCcb( Ccb);
1871
1872         if( !NT_SUCCESS( ntStatus))
1873         {
1874
1875             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1876                           AFS_TRACE_LEVEL_ERROR,
1877                           "AFSProcessCreate (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
1878                           Irp,
1879                           FullFileName,
1880                           ntStatus);
1881
1882             try_return( ntStatus);
1883         }
1884
1885         bAllocatedCcb = TRUE;
1886
1887         //
1888         // Initialize the Ccb
1889         //
1890
1891         (*Ccb)->DirectoryCB = pDirEntry;
1892
1893         (*Ccb)->GrantedAccess = *pDesiredAccess;
1894
1895         //
1896         // If this is a file, update the headers filesizes.
1897         //
1898
1899         if( (*Fcb)->Header.NodeTypeCode == AFS_FILE_FCB)
1900         {
1901
1902             //
1903             // Update the sizes with the information passed in
1904             //
1905
1906             (*Fcb)->Header.AllocationSize.QuadPart  = pObjectInfo->AllocationSize.QuadPart;
1907             (*Fcb)->Header.FileSize.QuadPart        = pObjectInfo->EndOfFile.QuadPart;
1908             (*Fcb)->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
1909
1910             //
1911             // Notify the system of the addition
1912             //
1913
1914             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1915                                             *Ccb,
1916                                             (ULONG)FILE_NOTIFY_CHANGE_FILE_NAME,
1917                                             (ULONG)FILE_ACTION_ADDED);
1918
1919             (*Fcb)->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_SUCCESS;
1920         }
1921         else if( (*Fcb)->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1922         {
1923
1924             //
1925             // This is a new directory node so indicate it has been enumerated
1926             //
1927
1928             SetFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1929
1930             //
1931             // And the parent directory entry
1932             //
1933
1934             KeQuerySystemTime( &pParentObjectInfo->ChangeTime);
1935
1936             //
1937             // Notify the system of the addition
1938             //
1939
1940             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1941                                             *Ccb,
1942                                             (ULONG)FILE_NOTIFY_CHANGE_DIR_NAME,
1943                                             (ULONG)FILE_ACTION_ADDED);
1944         }
1945         else if( (*Fcb)->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
1946                  (*Fcb)->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB ||
1947                  (*Fcb)->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
1948                  (*Fcb)->Header.NodeTypeCode == AFS_INVALID_FCB)
1949         {
1950
1951             //
1952             // And the parent directory entry
1953             //
1954
1955             KeQuerySystemTime( &pParentObjectInfo->ChangeTime);
1956
1957             //
1958             // Notify the system of the addition
1959             //
1960
1961             AFSFsRtlNotifyFullReportChange( pParentObjectInfo,
1962                                             *Ccb,
1963                                             (ULONG)FILE_NOTIFY_CHANGE_DIR_NAME,
1964                                             (ULONG)FILE_ACTION_ADDED);
1965         }
1966
1967         //
1968         // Save off the access for the open
1969         //
1970
1971         IoSetShareAccess( *pDesiredAccess,
1972                           usShareAccess,
1973                           pFileObject,
1974                           &(*Fcb)->ShareAccess);
1975
1976         lCount = InterlockedIncrement( &(*Fcb)->OpenHandleCount);
1977
1978         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1979                       AFS_TRACE_LEVEL_VERBOSE,
1980                       "AFSProcessCreate Increment handle count on Fcb %08lX Cnt %d\n",
1981                       (*Fcb),
1982                       lCount);
1983
1984         //
1985         // Increment the open reference and handle on the parent node
1986         //
1987
1988         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
1989
1990         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1991                       AFS_TRACE_LEVEL_VERBOSE,
1992                       "AFSProcessCreate Increment child open handle count on Parent object %08lX Cnt %d\n",
1993                       pObjectInfo->ParentObjectInformation,
1994                       lCount);
1995
1996         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
1997
1998         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
1999                       AFS_TRACE_LEVEL_VERBOSE,
2000                       "AFSProcessCreate Increment child open ref count on Parent object %08lX Cnt %d\n",
2001                       pObjectInfo->ParentObjectInformation,
2002                       lCount);
2003
2004         if( ulOptions & FILE_DELETE_ON_CLOSE)
2005         {
2006
2007             //
2008             // Mark it for delete on close
2009             //
2010
2011             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2012                           AFS_TRACE_LEVEL_VERBOSE,
2013                           "AFSProcessCreate (%08lX) Setting PENDING_DELETE flag in DirEntry %p Name %wZ\n",
2014                           Irp,
2015                           pDirEntry,
2016                           FullFileName);
2017
2018             SetFlag( pDirEntry->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2019         }
2020
2021         //
2022         // Indicate the object is locked in the service
2023         //
2024
2025         SetFlag( pObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE);
2026
2027         //
2028         // Return the open result for this file
2029         //
2030
2031         Irp->IoStatus.Information = FILE_CREATED;
2032
2033 try_exit:
2034
2035         //
2036         // If we created the Fcb we need to release the resources
2037         //
2038
2039         if( bReleaseFcb)
2040         {
2041
2042             if( !NT_SUCCESS( ntStatus))
2043             {
2044                 //
2045                 // Decrement the open count on this Fcb
2046                 //
2047
2048                 lCount = InterlockedDecrement( &(*Fcb)->OpenReferenceCount);
2049
2050                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2051                               AFS_TRACE_LEVEL_VERBOSE,
2052                               "AFSProcessCreate Decrement count on Fcb %08lX Cnt %d\n",
2053                               *Fcb,
2054                               lCount);
2055             }
2056
2057             AFSReleaseResource( &(*Fcb)->NPFcb->Resource);
2058         }
2059
2060         if( !NT_SUCCESS( ntStatus))
2061         {
2062
2063             if( bFileCreated)
2064             {
2065
2066                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2067                               AFS_TRACE_LEVEL_VERBOSE,
2068                               "AFSProcessCreate Create failed, removing DE %p from aprent object %p Status %08lX\n",
2069                               pDirEntry,
2070                               pParentObjectInfo,
2071                               ntStatus);
2072
2073                 //
2074                 // Remove the dir entry from the parent
2075                 //
2076
2077                 AFSAcquireExcl( pParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock,
2078                                 TRUE);
2079
2080                 SetFlag( pDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
2081
2082                 AFSNotifyDelete( pDirEntry,
2083                                  AuthGroup,
2084                                  FALSE);
2085
2086                 //
2087                 // Decrement the reference added during initialization of the DE
2088                 //
2089
2090                 lCount = InterlockedDecrement( &pDirEntry->OpenReferenceCount);
2091
2092                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
2093                               AFS_TRACE_LEVEL_VERBOSE,
2094                               "AFSProcessCreate Decrement count on %wZ DE %p Cnt %d\n",
2095                               &pDirEntry->NameInformation.FileName,
2096                               pDirEntry,
2097                               lCount);
2098
2099                 //
2100                 // Pull the directory entry from the parent
2101                 //
2102
2103                 AFSRemoveDirNodeFromParent( pParentObjectInfo,
2104                                             pDirEntry,
2105                                             FALSE); // Leave it in the enum list so the worker cleans it up
2106
2107                 //
2108                 // Tag the parent as needing verification
2109                 //
2110
2111                 SetFlag( pParentObjectInfo->Flags, AFS_OBJECT_FLAGS_VERIFY);
2112
2113                 pParentObjectInfo->DataVersion.QuadPart = (ULONGLONG)-1;
2114
2115                 AFSReleaseResource( pParentObjectInfo->Specific.Directory.DirectoryNodeHdr.TreeLock);
2116             }
2117
2118             if( bAllocatedCcb)
2119             {
2120
2121                 AFSRemoveCcb( NULL,
2122                               *Ccb);
2123             }
2124
2125             if( bAllocatedFcb)
2126             {
2127
2128                 AFSRemoveFcb( &pObjectInfo->Fcb);
2129             }
2130
2131             *Fcb = NULL;
2132
2133             *Ccb = NULL;
2134         }
2135     }
2136
2137     return ntStatus;
2138 }
2139
2140 NTSTATUS
2141 AFSOpenTargetDirectory( IN PIRP Irp,
2142                         IN AFSVolumeCB *VolumeCB,
2143                         IN AFSDirectoryCB *ParentDirectoryCB,
2144                         IN AFSDirectoryCB *TargetDirectoryCB,
2145                         IN UNICODE_STRING *TargetName,
2146                         OUT AFSFcb **Fcb,
2147                         OUT AFSCcb **Ccb)
2148 {
2149
2150     NTSTATUS ntStatus = STATUS_SUCCESS;
2151     PFILE_OBJECT pFileObject = NULL;
2152     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2153     PACCESS_MASK pDesiredAccess = NULL;
2154     USHORT usShareAccess;
2155     BOOLEAN bAllocatedCcb = FALSE;
2156     BOOLEAN bReleaseFcb = FALSE, bAllocatedFcb = FALSE;
2157     AFSObjectInfoCB *pParentObject = NULL, *pTargetObject = NULL;
2158     UNICODE_STRING uniTargetName;
2159     LONG lCount;
2160
2161     __Enter
2162     {
2163
2164         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
2165         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
2166
2167         pFileObject = pIrpSp->FileObject;
2168
2169         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2170                       AFS_TRACE_LEVEL_VERBOSE,
2171                       "AFSOpenTargetDirectory (%08lX) Processing file %wZ\n",
2172                       Irp,
2173                       TargetName);
2174
2175         pParentObject = ParentDirectoryCB->ObjectInformation;
2176
2177         if( pParentObject->FileType != AFS_FILE_TYPE_DIRECTORY)
2178         {
2179
2180             try_return( ntStatus = STATUS_INVALID_PARAMETER);
2181         }
2182
2183         //
2184         // Make sure we have an Fcb for the access
2185         //
2186
2187         if( pParentObject->Fcb != NULL)
2188         {
2189
2190             *Fcb = pParentObject->Fcb;
2191
2192             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
2193                             TRUE);
2194         }
2195         else
2196         {
2197
2198             //
2199             // Allocate and initialize the Fcb for the file.
2200             //
2201
2202             ntStatus = AFSInitFcb( ParentDirectoryCB);
2203
2204             *Fcb = pParentObject->Fcb;
2205
2206             if( !NT_SUCCESS( ntStatus))
2207             {
2208
2209                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2210                               AFS_TRACE_LEVEL_ERROR,
2211                               "AFSProcessCreate (%08lX) Failed to initialize fcb %wZ Status %08lX\n",
2212                               Irp,
2213                               &ParentDirectoryCB->NameInformation.FileName,
2214                               ntStatus);
2215
2216                 try_return( ntStatus);
2217             }
2218
2219             if ( ntStatus == STATUS_REPARSE)
2220             {
2221
2222                 bAllocatedFcb = TRUE;
2223             }
2224
2225             ntStatus = STATUS_SUCCESS;
2226         }
2227
2228         //
2229         // Increment the open count on this Fcb
2230         //
2231
2232         lCount = InterlockedIncrement( &pParentObject->Fcb->OpenReferenceCount);
2233
2234         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2235                       AFS_TRACE_LEVEL_VERBOSE,
2236                       "AFSOpenTargetDirectory Increment count on Fcb %08lX Cnt %d\n",
2237                       pParentObject->Fcb,
2238                       lCount);
2239
2240         bReleaseFcb = TRUE;
2241
2242         //
2243         // If there are current opens on the Fcb, check the access.
2244         //
2245
2246         if( pParentObject->Fcb->OpenHandleCount > 0)
2247         {
2248
2249             ntStatus = IoCheckShareAccess( *pDesiredAccess,
2250                                            usShareAccess,
2251                                            pFileObject,
2252                                            &pParentObject->Fcb->ShareAccess,
2253                                            FALSE);
2254
2255             if( !NT_SUCCESS( ntStatus))
2256             {
2257
2258                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2259                               AFS_TRACE_LEVEL_ERROR,
2260                               "AFSOpenTargetDirectory (%08lX) Access check failure %wZ Status %08lX\n",
2261                               Irp,
2262                               &ParentDirectoryCB->NameInformation.FileName,
2263                               ntStatus);
2264
2265                 try_return( ntStatus);
2266             }
2267         }
2268
2269         //
2270         // Initialize the Ccb for the file.
2271         //
2272
2273         ntStatus = AFSInitCcb( Ccb);
2274
2275         if( !NT_SUCCESS( ntStatus))
2276         {
2277
2278             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2279                           AFS_TRACE_LEVEL_ERROR,
2280                           "AFSOpenTargetDirectory (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
2281                           Irp,
2282                           &ParentDirectoryCB->NameInformation.FileName,
2283                           ntStatus);
2284
2285             try_return( ntStatus);
2286         }
2287
2288         bAllocatedCcb = TRUE;
2289
2290         //
2291         // Initialize the Ccb
2292         //
2293
2294         (*Ccb)->DirectoryCB = ParentDirectoryCB;
2295
2296         (*Ccb)->GrantedAccess = *pDesiredAccess;
2297
2298         if( TargetDirectoryCB != NULL &&
2299             FsRtlAreNamesEqual( &TargetDirectoryCB->NameInformation.FileName,
2300                                 TargetName,
2301                                 FALSE,
2302                                 NULL))
2303         {
2304
2305             Irp->IoStatus.Information = FILE_EXISTS;
2306
2307             uniTargetName = TargetDirectoryCB->NameInformation.FileName;
2308         }
2309         else
2310         {
2311
2312             Irp->IoStatus.Information = FILE_DOES_NOT_EXIST;
2313
2314             uniTargetName = *TargetName;
2315         }
2316
2317         //
2318         // Update the filename in the fileobject for rename processing
2319         //
2320
2321         RtlCopyMemory( pFileObject->FileName.Buffer,
2322                        uniTargetName.Buffer,
2323                        uniTargetName.Length);
2324
2325         pFileObject->FileName.Length = uniTargetName.Length;
2326
2327         //
2328         // OK, update the share access on the fileobject
2329         //
2330
2331         if( pParentObject->Fcb->OpenHandleCount > 0)
2332         {
2333
2334             IoUpdateShareAccess( pFileObject,
2335                                  &pParentObject->Fcb->ShareAccess);
2336         }
2337         else
2338         {
2339
2340             //
2341             // Set the access
2342             //
2343
2344             IoSetShareAccess( *pDesiredAccess,
2345                               usShareAccess,
2346                               pFileObject,
2347                               &pParentObject->Fcb->ShareAccess);
2348         }
2349
2350         lCount = InterlockedIncrement( &pParentObject->Fcb->OpenHandleCount);
2351
2352         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2353                       AFS_TRACE_LEVEL_VERBOSE,
2354                       "AFSOpenTargetDirectory Increment handle count on Fcb %08lX Cnt %d\n",
2355                       pParentObject->Fcb,
2356                       lCount);
2357
2358         //
2359         // Increment the open reference and handle on the parent node
2360         //
2361
2362         if( pParentObject->ParentObjectInformation != NULL)
2363         {
2364
2365             lCount = InterlockedIncrement( &pParentObject->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2366
2367             AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2368                           AFS_TRACE_LEVEL_VERBOSE,
2369                           "AFSOpenTargetDirectory Increment child open handle count on Parent object %08lX Cnt %d\n",
2370                           pParentObject->ParentObjectInformation,
2371                           lCount);
2372
2373             lCount = InterlockedIncrement( &pParentObject->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2374
2375             AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2376                           AFS_TRACE_LEVEL_VERBOSE,
2377                           "AFSOpenTargetDirectory Increment child open ref count on Parent object %08lX Cnt %d\n",
2378                           pParentObject->ParentObjectInformation,
2379                           lCount);
2380         }
2381
2382 try_exit:
2383
2384         if( bReleaseFcb)
2385         {
2386
2387             if( !NT_SUCCESS( ntStatus))
2388             {
2389                 //
2390                 // Decrement the open count on this Fcb
2391                 //
2392
2393                 lCount = InterlockedDecrement( &pParentObject->Fcb->OpenReferenceCount);
2394
2395                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2396                               AFS_TRACE_LEVEL_VERBOSE,
2397                               "AFSOpenTargetDirectory Decrement count on Fcb %08lX Cnt %d\n",
2398                               pParentObject->Fcb,
2399                               lCount);
2400             }
2401
2402             AFSReleaseResource( &pParentObject->Fcb->NPFcb->Resource);
2403         }
2404
2405         if( !NT_SUCCESS( ntStatus))
2406         {
2407
2408             if( bAllocatedCcb)
2409             {
2410
2411                 AFSRemoveCcb( NULL,
2412                               *Ccb);
2413             }
2414
2415             *Ccb = NULL;
2416
2417             if( bAllocatedFcb)
2418             {
2419
2420                 AFSRemoveFcb( &pParentObject->Fcb);
2421             }
2422
2423             *Fcb = NULL;
2424         }
2425     }
2426
2427     return ntStatus;
2428 }
2429
2430 NTSTATUS
2431 AFSProcessOpen( IN PIRP Irp,
2432                 IN GUID *AuthGroup,
2433                 IN AFSVolumeCB *VolumeCB,
2434                 IN AFSDirectoryCB *ParentDirCB,
2435                 IN AFSDirectoryCB *DirectoryCB,
2436                 OUT AFSFcb **Fcb,
2437                 OUT AFSCcb **Ccb)
2438 {
2439
2440     NTSTATUS ntStatus = STATUS_SUCCESS;
2441     PFILE_OBJECT pFileObject = NULL;
2442     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2443     PACCESS_MASK pDesiredAccess = NULL;
2444     USHORT usShareAccess;
2445     BOOLEAN bAllocatedCcb = FALSE, bReleaseFcb = FALSE, bAllocatedFcb = FALSE;
2446     ULONG ulAdditionalFlags = 0, ulOptions = 0;
2447     AFSFileOpenCB   stOpenCB;
2448     AFSFileOpenResultCB stOpenResultCB;
2449     ULONG       ulResultLen = 0;
2450     AFSObjectInfoCB *pParentObjectInfo = NULL;
2451     AFSObjectInfoCB *pObjectInfo = NULL;
2452     ULONG       ulFileAccess = 0;
2453     AFSFileAccessReleaseCB stReleaseFileAccess;
2454     LONG lCount;
2455
2456     __Enter
2457     {
2458
2459         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
2460         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
2461
2462         pFileObject = pIrpSp->FileObject;
2463
2464         pParentObjectInfo = ParentDirCB->ObjectInformation;
2465
2466         pObjectInfo = DirectoryCB->ObjectInformation;
2467
2468         //
2469         // Check if the entry is pending a deletion
2470         //
2471
2472         if( BooleanFlagOn( DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE))
2473         {
2474
2475             ntStatus = STATUS_DELETE_PENDING;
2476
2477             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2478                           AFS_TRACE_LEVEL_ERROR,
2479                           "AFSProcessOpen (%08lX) Entry pending delete %wZ Status %08lX\n",
2480                           Irp,
2481                           &DirectoryCB->NameInformation.FileName,
2482                           ntStatus);
2483
2484             try_return( ntStatus);
2485         }
2486
2487         //
2488         // Extract out the options
2489         //
2490
2491         ulOptions = pIrpSp->Parameters.Create.Options;
2492
2493         //
2494         // Check if we should go and retrieve updated information for the node
2495         //
2496
2497         ntStatus = AFSValidateEntry( DirectoryCB,
2498                                      AuthGroup,
2499                                      TRUE,
2500                                      FALSE);
2501
2502         if( !NT_SUCCESS( ntStatus))
2503         {
2504
2505             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2506                           AFS_TRACE_LEVEL_ERROR,
2507                           "AFSProcessOpen (%08lX) Failed to validate entry %wZ Status %08lX\n",
2508                           Irp,
2509                           &DirectoryCB->NameInformation.FileName,
2510                           ntStatus);
2511
2512             try_return( ntStatus);
2513         }
2514
2515         //
2516         // If this is marked for delete on close then be sure we can delete the entry
2517         //
2518
2519         if( BooleanFlagOn( ulOptions, FILE_DELETE_ON_CLOSE))
2520         {
2521
2522             ntStatus = AFSNotifyDelete( DirectoryCB,
2523                                         AuthGroup,
2524                                         TRUE);
2525
2526             if( !NT_SUCCESS( ntStatus))
2527             {
2528
2529                 ntStatus = STATUS_CANNOT_DELETE;
2530
2531                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2532                               AFS_TRACE_LEVEL_ERROR,
2533                               "AFSProcessOpen (%08lX) Cannot delete entry %wZ marked for delete on close Status %08lX\n",
2534                               Irp,
2535                               &DirectoryCB->NameInformation.FileName,
2536                               ntStatus);
2537
2538                 try_return( ntStatus);
2539             }
2540         }
2541
2542         //
2543         // Be sure we have an Fcb for the current object
2544         //
2545
2546         if( pObjectInfo->Fcb == NULL)
2547         {
2548
2549             ntStatus = AFSInitFcb( DirectoryCB);
2550
2551             if( !NT_SUCCESS( ntStatus))
2552             {
2553
2554                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2555                               AFS_TRACE_LEVEL_ERROR,
2556                               "AFSProcessOpen (%08lX) Failed to init fcb on %wZ Status %08lX\n",
2557                               Irp,
2558                               &DirectoryCB->NameInformation.FileName,
2559                               ntStatus);
2560
2561                 try_return( ntStatus);
2562             }
2563
2564             if ( ntStatus != STATUS_REPARSE)
2565             {
2566
2567                 bAllocatedFcb = TRUE;
2568             }
2569
2570             ntStatus = STATUS_SUCCESS;
2571         }
2572         else
2573         {
2574
2575             AFSAcquireExcl( pObjectInfo->Fcb->Header.Resource,
2576                             TRUE);
2577         }
2578
2579         //
2580         // Increment the open count on this Fcb
2581         //
2582
2583         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenReferenceCount);
2584
2585         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2586                       AFS_TRACE_LEVEL_VERBOSE,
2587                       "AFSProcessOpen Increment2 count on Fcb %08lX Cnt %d\n",
2588                       pObjectInfo->Fcb,
2589                       lCount);
2590
2591         bReleaseFcb = TRUE;
2592
2593         //
2594         // Check access on the entry
2595         //
2596
2597         if( pObjectInfo->Fcb->OpenHandleCount > 0)
2598         {
2599
2600             ntStatus = IoCheckShareAccess( *pDesiredAccess,
2601                                            usShareAccess,
2602                                            pFileObject,
2603                                            &pObjectInfo->Fcb->ShareAccess,
2604                                            FALSE);
2605
2606             if( !NT_SUCCESS( ntStatus))
2607             {
2608
2609                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2610                               AFS_TRACE_LEVEL_ERROR,
2611                               "AFSProcessOpen (%08lX) Failed to check share access on %wZ Status %08lX\n",
2612                               Irp,
2613                               &DirectoryCB->NameInformation.FileName,
2614                               ntStatus);
2615
2616                 try_return( ntStatus);
2617             }
2618         }
2619
2620         //
2621         // Additional checks
2622         //
2623
2624         if( pObjectInfo->Fcb->Header.NodeTypeCode == AFS_FILE_FCB)
2625         {
2626
2627             //
2628             // If the caller is asking for write access then try to flush the image section
2629             //
2630
2631             if( FlagOn( *pDesiredAccess, FILE_WRITE_DATA) ||
2632                 BooleanFlagOn(ulOptions, FILE_DELETE_ON_CLOSE))
2633             {
2634
2635                 if( !MmFlushImageSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
2636                                           MmFlushForWrite))
2637                 {
2638
2639                     ntStatus = BooleanFlagOn(ulOptions, FILE_DELETE_ON_CLOSE) ? STATUS_CANNOT_DELETE :
2640                                                                             STATUS_SHARING_VIOLATION;
2641
2642                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2643                                   AFS_TRACE_LEVEL_ERROR,
2644                                   "AFSProcessOpen (%08lX) Failed to flush image section %wZ Status %08lX\n",
2645                                   Irp,
2646                                   &DirectoryCB->NameInformation.FileName,
2647                                   ntStatus);
2648
2649                     try_return( ntStatus);
2650                 }
2651             }
2652
2653             if( BooleanFlagOn( ulOptions, FILE_DIRECTORY_FILE))
2654             {
2655
2656                 ntStatus = STATUS_NOT_A_DIRECTORY;
2657
2658                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2659                               AFS_TRACE_LEVEL_ERROR,
2660                               "AFSProcessOpen (%08lX) Attempt to open file as directory %wZ Status %08lX\n",
2661                               Irp,
2662                               &DirectoryCB->NameInformation.FileName,
2663                               ntStatus);
2664
2665                 try_return( ntStatus);
2666             }
2667
2668             pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_SUCCESS;
2669         }
2670         else if( pObjectInfo->Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB ||
2671                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_ROOT_FCB)
2672         {
2673
2674             if( BooleanFlagOn( ulOptions, FILE_NON_DIRECTORY_FILE))
2675             {
2676
2677                 ntStatus = STATUS_FILE_IS_A_DIRECTORY;
2678
2679                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2680                               AFS_TRACE_LEVEL_ERROR,
2681                               "AFSProcessOpen (%08lX) Attempt to open directory as file %wZ Status %08lX\n",
2682                               Irp,
2683                               &DirectoryCB->NameInformation.FileName,
2684                               ntStatus);
2685
2686                 try_return( ntStatus);
2687             }
2688         }
2689         else if( pObjectInfo->Fcb->Header.NodeTypeCode == AFS_MOUNT_POINT_FCB ||
2690                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_SYMBOLIC_LINK_FCB ||
2691                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_DFS_LINK_FCB ||
2692                  pObjectInfo->Fcb->Header.NodeTypeCode == AFS_INVALID_FCB)
2693         {
2694
2695         }
2696         else
2697         {
2698             ASSERT( FALSE);
2699             try_return( ntStatus = STATUS_UNSUCCESSFUL);
2700         }
2701
2702         //
2703         // Check with the service that we can open the file
2704         //
2705
2706         stOpenCB.ParentId = pParentObjectInfo->FileId;
2707
2708         stOpenCB.DesiredAccess = *pDesiredAccess;
2709
2710         stOpenCB.ShareAccess = usShareAccess;
2711
2712         stOpenCB.ProcessId = (ULONGLONG)PsGetCurrentProcessId();
2713
2714         stOpenCB.Identifier = (ULONGLONG)pFileObject;
2715
2716         stOpenResultCB.GrantedAccess = 0;
2717
2718         ulResultLen = sizeof( AFSFileOpenResultCB);
2719
2720         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_OPEN_FILE,
2721                                       AFS_REQUEST_FLAG_SYNCHRONOUS | AFS_REQUEST_FLAG_HOLD_FID,
2722                                       AuthGroup,
2723                                       &DirectoryCB->NameInformation.FileName,
2724                                       &pObjectInfo->FileId,
2725                                       (void *)&stOpenCB,
2726                                       sizeof( AFSFileOpenCB),
2727                                       (void *)&stOpenResultCB,
2728                                       &ulResultLen);
2729
2730         if( !NT_SUCCESS( ntStatus))
2731         {
2732
2733             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2734                           AFS_TRACE_LEVEL_ERROR,
2735                           "AFSProcessOpen (%08lX) Failed open in service %wZ Status %08lX\n",
2736                           Irp,
2737                           &DirectoryCB->NameInformation.FileName,
2738                           ntStatus);
2739
2740             try_return( ntStatus);
2741         }
2742
2743         //
2744         // Save the granted access in case we need to release it below
2745         //
2746
2747         ulFileAccess = stOpenResultCB.FileAccess;
2748
2749         //
2750         // Check if there is a conflict
2751         //
2752
2753         if( !AFSCheckAccess( *pDesiredAccess,
2754                              stOpenResultCB.GrantedAccess,
2755                              BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_DIRECTORY)))
2756         {
2757
2758             ntStatus = STATUS_ACCESS_DENIED;
2759
2760             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2761                           AFS_TRACE_LEVEL_ERROR,
2762                           "AFSProcessOpen (%08lX) Failed to check access from service Desired %08lX Granted %08lX Entry %wZ Status %08lX\n",
2763                           Irp,
2764                           *pDesiredAccess,
2765                           stOpenResultCB.GrantedAccess,
2766                           &DirectoryCB->NameInformation.FileName,
2767                           ntStatus);
2768
2769             try_return( ntStatus);
2770         }
2771
2772         //
2773         // Initialize the Ccb for the file.
2774         //
2775
2776         ntStatus = AFSInitCcb( Ccb);
2777
2778         if( !NT_SUCCESS( ntStatus))
2779         {
2780
2781             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2782                           AFS_TRACE_LEVEL_ERROR,
2783                           "AFSProcessOpen (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
2784                           Irp,
2785                           &DirectoryCB->NameInformation.FileName,
2786                           ntStatus);
2787
2788             try_return( ntStatus);
2789         }
2790
2791         bAllocatedCcb = TRUE;
2792
2793         (*Ccb)->DirectoryCB = DirectoryCB;
2794
2795         (*Ccb)->FileAccess = ulFileAccess;
2796
2797         (*Ccb)->GrantedAccess = *pDesiredAccess;
2798
2799         //
2800         // Perform the access check on the target if this is a mount point or symlink
2801         //
2802
2803         if( pObjectInfo->Fcb->OpenHandleCount > 0)
2804         {
2805
2806             IoUpdateShareAccess( pFileObject,
2807                                  &pObjectInfo->Fcb->ShareAccess);
2808         }
2809         else
2810         {
2811
2812             //
2813             // Set the access
2814             //
2815
2816             IoSetShareAccess( *pDesiredAccess,
2817                               usShareAccess,
2818                               pFileObject,
2819                               &pObjectInfo->Fcb->ShareAccess);
2820         }
2821
2822         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenHandleCount);
2823
2824         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2825                       AFS_TRACE_LEVEL_VERBOSE,
2826                       "AFSProcessOpen Increment handle count on Fcb %08lX Cnt %d\n",
2827                       pObjectInfo->Fcb,
2828                       lCount);
2829
2830         //
2831         // Increment the open reference and handle on the parent node
2832         //
2833
2834         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2835
2836         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2837                       AFS_TRACE_LEVEL_VERBOSE,
2838                       "AFSProcessOpen Increment child open handle count on Parent object %08lX Cnt %d\n",
2839                       pObjectInfo->ParentObjectInformation,
2840                       lCount);
2841
2842         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2843
2844         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2845                       AFS_TRACE_LEVEL_VERBOSE,
2846                       "AFSProcessOpen Increment child open ref count on Parent object %08lX Cnt %d\n",
2847                       pObjectInfo->ParentObjectInformation,
2848                       lCount);
2849
2850         if( BooleanFlagOn( ulOptions, FILE_DELETE_ON_CLOSE))
2851         {
2852
2853             //
2854             // Mark it for delete on close
2855             //
2856
2857             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2858                           AFS_TRACE_LEVEL_VERBOSE,
2859                           "AFSProcessOpen (%08lX) Setting PENDING_DELETE flag in DirEntry %p Name %wZ\n",
2860                           Irp,
2861                           DirectoryCB,
2862                           &DirectoryCB->NameInformation.FileName);
2863
2864             SetFlag( DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2865         }
2866
2867         //
2868         // Indicate the object is held
2869         //
2870
2871         SetFlag( pObjectInfo->Flags, AFS_OBJECT_HELD_IN_SERVICE);
2872
2873         //
2874         // Return the open result for this file
2875         //
2876
2877         Irp->IoStatus.Information = FILE_OPENED;
2878
2879         *Fcb = pObjectInfo->Fcb;
2880
2881 try_exit:
2882
2883         if( bReleaseFcb)
2884         {
2885
2886             if( !NT_SUCCESS( ntStatus))
2887             {
2888                 //
2889                 // Decrement the open count on this Fcb
2890                 //
2891
2892                 lCount = InterlockedDecrement( &pObjectInfo->Fcb->OpenReferenceCount);
2893
2894                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2895                               AFS_TRACE_LEVEL_VERBOSE,
2896                               "AFSProcessOpen Decrement2 count on Fcb %08lX Cnt %d\n",
2897                               pObjectInfo->Fcb,
2898                               lCount);
2899             }
2900
2901             AFSReleaseResource( pObjectInfo->Fcb->Header.Resource);
2902         }
2903
2904         if( !NT_SUCCESS( ntStatus))
2905         {
2906
2907             if ( ulFileAccess > 0)
2908             {
2909
2910                 stReleaseFileAccess.ProcessId = (ULONGLONG)PsGetCurrentProcessId();
2911
2912                 stReleaseFileAccess.FileAccess = ulFileAccess;
2913
2914                 stReleaseFileAccess.Identifier = (ULONGLONG)pFileObject;
2915
2916                 AFSProcessRequest( AFS_REQUEST_TYPE_RELEASE_FILE_ACCESS,
2917                                    AFS_REQUEST_FLAG_SYNCHRONOUS,
2918                                    AuthGroup,
2919                                    &DirectoryCB->NameInformation.FileName,
2920                                    &pObjectInfo->FileId,
2921                                    (void *)&stReleaseFileAccess,
2922                                    sizeof( AFSFileAccessReleaseCB),
2923                                    NULL,
2924                                    NULL);
2925             }
2926
2927             if( bAllocatedCcb)
2928             {
2929
2930                 AFSRemoveCcb( NULL,
2931                               *Ccb);
2932             }
2933
2934             *Ccb = NULL;
2935
2936             if( bAllocatedFcb)
2937             {
2938
2939                 AFSRemoveFcb( &pObjectInfo->Fcb);
2940             }
2941
2942             *Fcb = NULL;
2943         }
2944     }
2945
2946     return ntStatus;
2947 }
2948
2949 NTSTATUS
2950 AFSProcessOverwriteSupersede( IN PDEVICE_OBJECT DeviceObject,
2951                               IN PIRP           Irp,
2952                               IN AFSVolumeCB   *VolumeCB,
2953                               IN GUID          *AuthGroup,
2954                               IN AFSDirectoryCB *ParentDirCB,
2955                               IN AFSDirectoryCB *DirectoryCB,
2956                               OUT AFSFcb       **Fcb,
2957                               OUT AFSCcb       **Ccb)
2958 {
2959
2960     NTSTATUS ntStatus = STATUS_SUCCESS;
2961     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2962     PFILE_OBJECT pFileObject = NULL;
2963     LARGE_INTEGER liZero = {0,0};
2964     BOOLEAN bReleasePaging = FALSE, bReleaseFcb = FALSE;
2965     ULONG   ulAttributes = 0;
2966     LARGE_INTEGER liTime;
2967     ULONG ulCreateDisposition = 0;
2968     BOOLEAN bAllocatedCcb = FALSE, bAllocatedFcb = FALSE;
2969     PACCESS_MASK pDesiredAccess = NULL;
2970     USHORT usShareAccess;
2971     AFSObjectInfoCB *pParentObjectInfo = NULL;
2972     AFSObjectInfoCB *pObjectInfo = NULL;
2973     LONG lCount;
2974
2975     __Enter
2976     {
2977
2978         pDesiredAccess = &pIrpSp->Parameters.Create.SecurityContext->DesiredAccess;
2979         usShareAccess = pIrpSp->Parameters.Create.ShareAccess;
2980
2981         pFileObject = pIrpSp->FileObject;
2982
2983         ulAttributes = pIrpSp->Parameters.Create.FileAttributes;
2984
2985         ulCreateDisposition = (pIrpSp->Parameters.Create.Options >> 24) & 0x000000ff;
2986
2987         if( BooleanFlagOn( VolumeCB->VolumeInformation.Characteristics, FILE_READ_ONLY_DEVICE))
2988         {
2989
2990             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2991                           AFS_TRACE_LEVEL_ERROR,
2992                           "AFSProcessOverwriteSupersede Request failed on %wZ due to read only volume\n",
2993                           Irp,
2994                           &DirectoryCB->NameInformation.FileName);
2995
2996             try_return( ntStatus = STATUS_MEDIA_WRITE_PROTECTED);
2997         }
2998
2999         pParentObjectInfo = ParentDirCB->ObjectInformation;
3000
3001         pObjectInfo = DirectoryCB->ObjectInformation;
3002
3003         //
3004         // Check if we should go and retrieve updated information for the node
3005         //
3006
3007         ntStatus = AFSValidateEntry( DirectoryCB,
3008                                      AuthGroup,
3009                                      TRUE,
3010                                      FALSE);
3011
3012         if( !NT_SUCCESS( ntStatus))
3013         {
3014
3015             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3016                           AFS_TRACE_LEVEL_ERROR,
3017                           "AFSProcessOverwriteSupersede (%08lX) Failed to validate entry %wZ Status %08lX\n",
3018                           Irp,
3019                           &DirectoryCB->NameInformation.FileName,
3020                           ntStatus);
3021
3022             try_return( ntStatus);
3023         }
3024
3025         //
3026         // Be sure we have an Fcb for the object block
3027         //
3028
3029         if( pObjectInfo->Fcb == NULL)
3030         {
3031
3032             ntStatus = AFSInitFcb( DirectoryCB);
3033
3034             *Fcb = pObjectInfo->Fcb;
3035
3036             if( !NT_SUCCESS( ntStatus))
3037             {
3038
3039                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3040                               AFS_TRACE_LEVEL_ERROR,
3041                               "AFSProcessOverwriteSupersede (%08lX) Failed to initialize fcb %wZ Status %08lX\n",
3042                               Irp,
3043                               &DirectoryCB->NameInformation.FileName,
3044                               ntStatus);
3045
3046                 try_return( ntStatus);
3047             }
3048
3049             if ( ntStatus != STATUS_REPARSE)
3050             {
3051
3052                 bAllocatedFcb = TRUE;
3053             }
3054
3055             ntStatus = STATUS_SUCCESS;
3056         }
3057         else
3058         {
3059
3060             AFSAcquireExcl( pObjectInfo->Fcb->Header.Resource,
3061                             TRUE);
3062         }
3063
3064         //
3065         // Increment the open count on this Fcb.
3066         //
3067
3068         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenReferenceCount);
3069
3070         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3071                       AFS_TRACE_LEVEL_VERBOSE,
3072                       "AFSProcessOverwriteSupersede Increment2 count on Fcb %08lX Cnt %d\n",
3073                       pObjectInfo->Fcb,
3074                       lCount);
3075
3076         bReleaseFcb = TRUE;
3077
3078         //
3079         // Check access on the entry
3080         //
3081
3082         if( pObjectInfo->Fcb->OpenHandleCount > 0)
3083         {
3084
3085             ntStatus = IoCheckShareAccess( *pDesiredAccess,
3086                                            usShareAccess,
3087                                            pFileObject,
3088                                            &pObjectInfo->Fcb->ShareAccess,
3089                                            FALSE);
3090
3091             if( !NT_SUCCESS( ntStatus))
3092             {
3093
3094                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3095                               AFS_TRACE_LEVEL_ERROR,
3096                               "AFSProcessOverwriteSupersede (%08lX) Access check failure %wZ Status %08lX\n",
3097                               Irp,
3098                               &DirectoryCB->NameInformation.FileName,
3099                               ntStatus);
3100
3101                 try_return( ntStatus);
3102             }
3103         }
3104
3105         //
3106         //  Before we actually truncate, check to see if the purge
3107         //  is going to fail.
3108         //
3109
3110         if( !MmCanFileBeTruncated( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
3111                                    &liZero))
3112         {
3113
3114             ntStatus = STATUS_USER_MAPPED_FILE;
3115
3116             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3117                           AFS_TRACE_LEVEL_ERROR,
3118                           "AFSProcessOverwriteSupersede (%08lX) File user mapped %wZ Status %08lX\n",
3119                           Irp,
3120                           &DirectoryCB->NameInformation.FileName,
3121                           ntStatus);
3122
3123             try_return( ntStatus);
3124         }
3125
3126         //
3127         // Initialize the Ccb for the file.
3128         //
3129
3130         ntStatus = AFSInitCcb( Ccb);
3131
3132         if( !NT_SUCCESS( ntStatus))
3133         {
3134
3135             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3136                           AFS_TRACE_LEVEL_ERROR,
3137                           "AFSProcessOverwriteSupersede (%08lX) Failed to initialize ccb %wZ Status %08lX\n",
3138                           Irp,
3139                           &DirectoryCB->NameInformation.FileName,
3140                           ntStatus);
3141
3142             try_return( ntStatus);
3143         }
3144
3145         bAllocatedCcb = TRUE;
3146
3147         //
3148         // Initialize the Ccb
3149         //
3150
3151         (*Ccb)->DirectoryCB = DirectoryCB;
3152
3153         (*Ccb)->GrantedAccess = *pDesiredAccess;
3154
3155         //
3156         // Need to purge any data currently in the cache
3157         //
3158
3159         CcPurgeCacheSection( &pObjectInfo->Fcb->NPFcb->SectionObjectPointers,
3160                              NULL,
3161                              0,
3162                              FALSE);
3163
3164         pObjectInfo->Fcb->Header.FileSize.QuadPart = 0;
3165         pObjectInfo->Fcb->Header.ValidDataLength.QuadPart = 0;
3166         pObjectInfo->Fcb->Header.AllocationSize.QuadPart = 0;
3167
3168         pObjectInfo->EndOfFile.QuadPart = 0;
3169         pObjectInfo->AllocationSize.QuadPart = 0;
3170
3171         //
3172         // Trim down the extents. We do this BEFORE telling the service
3173         // the file is truncated since there is a potential race between
3174         // a worker thread releasing extents and us trimming
3175         //
3176
3177         AFSTrimExtents( pObjectInfo->Fcb,
3178                         &pObjectInfo->Fcb->Header.FileSize);
3179
3180         KeQuerySystemTime( &pObjectInfo->ChangeTime);
3181
3182         KeQuerySystemTime( &pObjectInfo->LastAccessTime);
3183
3184         //KeQuerySystemTime( &pObjectInfo->CreationTime);
3185
3186         KeQuerySystemTime( &pObjectInfo->LastWriteTime);
3187
3188         ntStatus = AFSUpdateFileInformation( &pParentObjectInfo->FileId,
3189                                              pObjectInfo,
3190                                              AuthGroup);
3191
3192         if( !NT_SUCCESS( ntStatus))
3193         {
3194
3195             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3196                           AFS_TRACE_LEVEL_ERROR,
3197                           "AFSProcessOverwriteSupersede (%08lX) Failed to update file information %wZ Status %08lX\n",
3198                           Irp,
3199                           &DirectoryCB->NameInformation.FileName,
3200                           ntStatus);
3201
3202             try_return( ntStatus);
3203         }
3204
3205         AFSAcquireExcl( pObjectInfo->Fcb->Header.PagingIoResource,
3206                         TRUE);
3207
3208         bReleasePaging = TRUE;
3209
3210         pFileObject->SectionObjectPointer = &pObjectInfo->Fcb->NPFcb->SectionObjectPointers;
3211
3212         pFileObject->FsContext = (void *)pObjectInfo->Fcb;
3213
3214         pFileObject->FsContext2 = (void *)*Ccb;
3215
3216         //
3217         // Set the update flag accordingly
3218         //
3219
3220         SetFlag( pObjectInfo->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED |
3221                                           AFS_FCB_FLAG_UPDATE_CREATE_TIME |
3222                                           AFS_FCB_FLAG_UPDATE_CHANGE_TIME |
3223                                           AFS_FCB_FLAG_UPDATE_ACCESS_TIME |
3224                                           AFS_FCB_FLAG_UPDATE_LAST_WRITE_TIME);
3225
3226         CcSetFileSizes( pFileObject,
3227                         (PCC_FILE_SIZES)&pObjectInfo->Fcb->Header.AllocationSize);
3228
3229         AFSReleaseResource( pObjectInfo->Fcb->Header.PagingIoResource);
3230
3231         bReleasePaging = FALSE;
3232
3233         ulAttributes |= FILE_ATTRIBUTE_ARCHIVE;
3234
3235         if( ulCreateDisposition == FILE_SUPERSEDE)
3236         {
3237
3238             pObjectInfo->FileAttributes = ulAttributes;
3239
3240         }
3241         else
3242         {
3243
3244             pObjectInfo->FileAttributes |= ulAttributes;
3245         }
3246
3247         //
3248         // Save off the access for the open
3249         //
3250
3251         if( pObjectInfo->Fcb->OpenHandleCount > 0)
3252         {
3253
3254             IoUpdateShareAccess( pFileObject,
3255                                  &pObjectInfo->Fcb->ShareAccess);
3256         }
3257         else
3258         {
3259
3260             //
3261             // Set the access
3262             //
3263
3264             IoSetShareAccess( *pDesiredAccess,
3265                               usShareAccess,
3266                               pFileObject,
3267                               &pObjectInfo->Fcb->ShareAccess);
3268         }
3269
3270         //
3271         // Return the correct action
3272         //
3273
3274         if( ulCreateDisposition == FILE_SUPERSEDE)
3275         {
3276
3277             Irp->IoStatus.Information = FILE_SUPERSEDED;
3278         }
3279         else
3280         {
3281
3282             Irp->IoStatus.Information = FILE_OVERWRITTEN;
3283         }
3284
3285         lCount = InterlockedIncrement( &pObjectInfo->Fcb->OpenHandleCount);
3286
3287         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3288                       AFS_TRACE_LEVEL_VERBOSE,
3289                       "AFSProcessOverwriteSupersede Increment handle count on Fcb %08lX Cnt %d\n",
3290                       pObjectInfo->Fcb,
3291                       lCount);
3292
3293         //
3294         // Increment the open reference and handle on the parent node
3295         //
3296
3297         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
3298
3299         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3300                       AFS_TRACE_LEVEL_VERBOSE,
3301                       "AFSProcessOverwriteSupersede Increment child open handle count on Parent object %08lX Cnt %d\n",
3302                       pObjectInfo->ParentObjectInformation,
3303                       lCount);
3304
3305         lCount = InterlockedIncrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
3306
3307         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3308                       AFS_TRACE_LEVEL_VERBOSE,
3309                       "AFSProcessOverwriteSupersede Increment child open ref count on Parent object %08lX Cnt %d\n",
3310                       pObjectInfo->ParentObjectInformation,
3311                       lCount);
3312
3313         *Fcb = pObjectInfo->Fcb;
3314
3315 try_exit:
3316
3317         if( bReleasePaging)
3318         {
3319
3320             AFSReleaseResource( pObjectInfo->Fcb->Header.PagingIoResource);
3321         }
3322
3323         if( bReleaseFcb)
3324         {
3325
3326             if( !NT_SUCCESS( ntStatus))
3327             {
3328                 //
3329                 // Decrement the open count on this Fcb.
3330                 //
3331
3332                 lCount = InterlockedDecrement( &pObjectInfo->Fcb->OpenReferenceCount);
3333
3334                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3335                               AFS_TRACE_LEVEL_VERBOSE,
3336                               "AFSProcessOverwriteSupersede Decrement2 count on Fcb %08lX Cnt %d\n",
3337                               pObjectInfo->Fcb,
3338                               lCount);
3339             }
3340
3341             AFSReleaseResource( pObjectInfo->Fcb->Header.Resource);
3342         }
3343
3344         if( !NT_SUCCESS( ntStatus))
3345         {
3346
3347             if( bAllocatedCcb)
3348             {
3349
3350                 AFSRemoveCcb( NULL,
3351                               *Ccb);
3352             }
3353
3354             *Ccb = NULL;
3355
3356             if( bAllocatedFcb)
3357             {
3358
3359                 AFSRemoveFcb( &pObjectInfo->Fcb);
3360             }
3361
3362             *Fcb = NULL;
3363         }
3364     }
3365
3366     return ntStatus;
3367 }
3368
3369 NTSTATUS
3370 AFSControlDeviceCreate( IN PIRP Irp)
3371 {
3372
3373     NTSTATUS ntStatus = STATUS_SUCCESS;
3374
3375     __Enter
3376     {
3377
3378         //
3379         // For now, jsut let the open happen
3380         //
3381
3382         Irp->IoStatus.Information = FILE_OPENED;
3383     }
3384
3385     return ntStatus;
3386 }
3387
3388 NTSTATUS
3389 AFSOpenIOCtlFcb( IN PIRP Irp,
3390                  IN GUID *AuthGroup,
3391                  IN AFSDirectoryCB *ParentDirCB,
3392                  OUT AFSFcb **Fcb,
3393                  OUT AFSCcb **Ccb)
3394 {
3395
3396     NTSTATUS ntStatus = STATUS_SUCCESS;
3397     PFILE_OBJECT pFileObject = NULL;
3398     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3399     BOOLEAN bReleaseFcb = FALSE, bAllocatedCcb = FALSE, bAllocatedFcb = FALSE;
3400     UNICODE_STRING uniFullFileName;
3401     AFSPIOCtlOpenCloseRequestCB stPIOCtlOpen;
3402     AFSFileID stFileID;
3403     AFSObjectInfoCB *pParentObjectInfo = NULL;
3404     LONG lCount;
3405
3406     __Enter
3407     {
3408
3409         pFileObject = pIrpSp->FileObject;
3410
3411         pParentObjectInfo = ParentDirCB->ObjectInformation;
3412
3413         //
3414         // If we haven't initialized the PIOCtl DirectoryCB for this directory then do it now
3415         //
3416
3417         if( pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB == NULL)
3418         {
3419
3420             ntStatus = AFSInitPIOCtlDirectoryCB( pParentObjectInfo);
3421
3422             if( !NT_SUCCESS( ntStatus))
3423             {
3424
3425                 try_return( ntStatus);
3426             }
3427         }
3428
3429         if( pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb == NULL)
3430         {
3431
3432             //
3433             // Allocate and initialize the Fcb for the file.
3434             //
3435
3436             ntStatus = AFSInitFcb( pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB);
3437
3438             *Fcb = pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb;
3439
3440             if( !NT_SUCCESS( ntStatus))
3441             {
3442
3443                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3444                               AFS_TRACE_LEVEL_ERROR,
3445                               "AFSOpenIOCtlFcb (%08lX) Failed to initialize fcb Status %08lX\n",
3446                               Irp,
3447                               ntStatus);
3448
3449                 try_return( ntStatus);
3450             }
3451
3452             if ( ntStatus != STATUS_REPARSE)
3453             {
3454
3455                 bAllocatedFcb = TRUE;
3456             }
3457
3458             ntStatus = STATUS_SUCCESS;
3459         }
3460         else
3461         {
3462
3463             *Fcb = pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb;
3464
3465             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
3466                             TRUE);
3467         }
3468
3469         //
3470         // Increment the open reference and handle on the node
3471         //
3472
3473         lCount = InterlockedIncrement( &(*Fcb)->OpenReferenceCount);
3474
3475         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3476                       AFS_TRACE_LEVEL_VERBOSE,
3477                       "AFSOpenIOCtlFcb Increment count on Fcb %08lX Cnt %d\n",
3478                       (*Fcb),
3479                       lCount);
3480
3481         bReleaseFcb = TRUE;
3482
3483         //
3484         // Initialize the Ccb for the file.
3485         //
3486
3487         ntStatus = AFSInitCcb( Ccb);
3488
3489         if( !NT_SUCCESS( ntStatus))
3490         {
3491
3492             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3493                           AFS_TRACE_LEVEL_ERROR,
3494                           "AFSOpenIOCtlFcb (%08lX) Failed to initialize ccb Status %08lX\n",
3495                           Irp,
3496                           ntStatus);
3497
3498             try_return( ntStatus);
3499         }
3500
3501         bAllocatedCcb = TRUE;
3502
3503         //
3504         // Setup the Ccb
3505         //
3506
3507         (*Ccb)->DirectoryCB = pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB;
3508
3509         //
3510         // Set the PIOCtl index
3511         //
3512
3513         (*Ccb)->RequestID = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.OpenRequestIndex);
3514
3515         RtlZeroMemory( &stPIOCtlOpen,
3516                        sizeof( AFSPIOCtlOpenCloseRequestCB));
3517
3518         stPIOCtlOpen.RequestId = (*Ccb)->RequestID;
3519
3520         stPIOCtlOpen.RootId = pParentObjectInfo->VolumeCB->ObjectInformation.FileId;
3521
3522         RtlZeroMemory( &stFileID,
3523                        sizeof( AFSFileID));
3524
3525         //
3526         // The parent directory FID of the node
3527         //
3528
3529         stFileID = pParentObjectInfo->FileId;
3530
3531         //
3532         // Issue the open request to the service
3533         //
3534
3535         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_PIOCTL_OPEN,
3536                                       AFS_REQUEST_FLAG_SYNCHRONOUS,
3537                                       AuthGroup,
3538                                       NULL,
3539                                       &stFileID,
3540                                       (void *)&stPIOCtlOpen,
3541                                       sizeof( AFSPIOCtlOpenCloseRequestCB),
3542                                       NULL,
3543                                       NULL);
3544
3545         if( !NT_SUCCESS( ntStatus))
3546         {
3547
3548             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
3549                           AFS_TRACE_LEVEL_ERROR,
3550                           "AFSOpenIOCtlFcb (%08lX) Failed service open Status %08lX\n",
3551                           Irp,
3552                           ntStatus);
3553
3554             try_return( ntStatus);
3555         }
3556
3557         //
3558         // Reference the directory entry
3559         //
3560
3561         lCount = InterlockedIncrement( &((*Ccb)->DirectoryCB->OpenReferenceCount));
3562
3563         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3564                       AFS_TRACE_LEVEL_VERBOSE,
3565                       "AFSOpenIOCtlFcb Increment count on %wZ DE %p Ccb %p Cnt %d\n",
3566                       &(*Ccb)->DirectoryCB->NameInformation.FileName,
3567                       (*Ccb)->DirectoryCB,
3568                       (*Ccb),
3569                       lCount);
3570
3571         //
3572         // Increment the handle on the node
3573         //
3574
3575         lCount = InterlockedIncrement( &(*Fcb)->OpenHandleCount);
3576
3577         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3578                       AFS_TRACE_LEVEL_VERBOSE,
3579                       "AFSOpenIOCtlFcb Increment handle count on Fcb %08lX Cnt %d\n",
3580                       (*Fcb),
3581                       lCount);
3582
3583         //
3584         // Increment the open reference and handle on the parent node
3585         //
3586
3587         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenHandleCount);
3588
3589         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3590                       AFS_TRACE_LEVEL_VERBOSE,
3591                       "AFSOpenIOCtlFcb Increment child open handle count on Parent object %08lX Cnt %d\n",
3592                       pParentObjectInfo,
3593                       lCount);
3594
3595         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenReferenceCount);
3596
3597         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3598                       AFS_TRACE_LEVEL_VERBOSE,
3599                       "AFSOpenIOCtlFcb Increment child open ref count on Parent object %08lX Cnt %d\n",
3600                       pParentObjectInfo,
3601                       lCount);
3602
3603         //
3604         // Return the open result for this file
3605         //
3606
3607         Irp->IoStatus.Information = FILE_OPENED;
3608
3609 try_exit:
3610
3611         //
3612         //Dereference the passed in parent since the returned dir entry
3613         // is already referenced
3614         //
3615
3616         lCount = InterlockedDecrement( &ParentDirCB->OpenReferenceCount);
3617
3618         AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
3619                       AFS_TRACE_LEVEL_VERBOSE,
3620                       "AFSOpenIOCtlFcb Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
3621                       &ParentDirCB->NameInformation.FileName,
3622                       ParentDirCB,
3623                       NULL,
3624                       lCount);
3625
3626         //
3627         // If we created the Fcb we need to release the resources
3628         //
3629
3630         if( bReleaseFcb)
3631         {
3632
3633             if( !NT_SUCCESS( ntStatus))
3634             {
3635                 //
3636                 // Decrement the open reference and handle on the node
3637                 //
3638
3639                 lCount = InterlockedDecrement( &(*Fcb)->OpenReferenceCount);
3640
3641                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3642                               AFS_TRACE_LEVEL_VERBOSE,
3643                               "AFSOpenIOCtlFcb Decrement count on Fcb %08lX Cnt %d\n",
3644                               (*Fcb),
3645                               lCount);
3646             }
3647
3648             AFSReleaseResource( &(*Fcb)->NPFcb->Resource);
3649         }
3650
3651         if( !NT_SUCCESS( ntStatus))
3652         {
3653
3654             if( bAllocatedCcb)
3655             {
3656
3657                 AFSRemoveCcb( NULL,
3658                               *Ccb);
3659             }
3660
3661             *Ccb = NULL;
3662
3663             if( bAllocatedFcb)
3664             {
3665
3666                 //
3667                 // Need to tear down this Fcb since it is not in the tree for the worker thread
3668                 //
3669
3670                 AFSRemoveFcb( &pParentObjectInfo->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
3671             }
3672
3673             *Fcb = NULL;
3674         }
3675     }
3676
3677     return ntStatus;
3678 }
3679
3680 NTSTATUS
3681 AFSOpenSpecialShareFcb( IN PIRP Irp,
3682                         IN GUID *AuthGroup,
3683                         IN AFSDirectoryCB *DirectoryCB,
3684                         OUT AFSFcb **Fcb,
3685                         OUT AFSCcb **Ccb)
3686 {
3687
3688     NTSTATUS ntStatus = STATUS_SUCCESS;
3689     PFILE_OBJECT pFileObject = NULL;
3690     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3691     BOOLEAN bReleaseFcb = FALSE, bAllocatedCcb = FALSE, bAllocateFcb = FALSE;
3692     AFSObjectInfoCB *pParentObjectInfo = NULL;
3693     AFSPipeOpenCloseRequestCB stPipeOpen;
3694     LONG lCount;
3695
3696     __Enter
3697     {
3698
3699         pFileObject = pIrpSp->FileObject;
3700
3701         AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3702                       AFS_TRACE_LEVEL_VERBOSE_2,
3703                       "AFSOpenSpecialShareFcb (%08lX) Processing Share %wZ open\n",
3704                       Irp,
3705                       &DirectoryCB->NameInformation.FileName);
3706
3707         pParentObjectInfo = DirectoryCB->ObjectInformation->ParentObjectInformation;
3708
3709         if( DirectoryCB->ObjectInformation->Fcb == NULL)
3710         {
3711
3712             //
3713             // Allocate and initialize the Fcb for the file.
3714             //
3715
3716             ntStatus = AFSInitFcb( DirectoryCB);
3717
3718             *Fcb = DirectoryCB->ObjectInformation->Fcb;
3719
3720             if( !NT_SUCCESS( ntStatus))
3721             {
3722
3723                 AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3724                               AFS_TRACE_LEVEL_ERROR,
3725                               "AFSOpenSpecialShareFcb (%08lX) Failed to initialize fcb Status %08lX\n",
3726                               Irp,
3727                               ntStatus);
3728
3729                 try_return( ntStatus);
3730             }
3731
3732             if ( ntStatus != STATUS_REPARSE)
3733             {
3734
3735                 bAllocateFcb = TRUE;
3736             }
3737
3738             ntStatus = STATUS_SUCCESS;
3739         }
3740         else
3741         {
3742
3743             *Fcb = DirectoryCB->ObjectInformation->Fcb;
3744
3745             AFSAcquireExcl( &(*Fcb)->NPFcb->Resource,
3746                             TRUE);
3747         }
3748
3749         //
3750         // Increment the open count on this Fcb
3751         //
3752
3753         lCount = InterlockedIncrement( &(*Fcb)->OpenReferenceCount);
3754
3755         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3756                       AFS_TRACE_LEVEL_VERBOSE,
3757                       "AFSOpenSpecialShareFcb Increment count on Fcb %08lX Cnt %d\n",
3758                       (*Fcb),
3759                       lCount);
3760
3761         bReleaseFcb = TRUE;
3762
3763         //
3764         // Initialize the Ccb for the file.
3765         //
3766
3767         ntStatus = AFSInitCcb( Ccb);
3768
3769         if( !NT_SUCCESS( ntStatus))
3770         {
3771
3772             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3773                           AFS_TRACE_LEVEL_ERROR,
3774                           "AFSOpenSpecialShareFcb (%08lX) Failed to initialize ccb Status %08lX\n",
3775                           Irp,
3776                           ntStatus);
3777
3778             try_return( ntStatus);
3779         }
3780
3781         bAllocatedCcb = TRUE;
3782
3783         //
3784         // Setup the Ccb
3785         //
3786
3787         (*Ccb)->DirectoryCB = DirectoryCB;
3788
3789         //
3790         // Call the service to open the share
3791         //
3792
3793         (*Ccb)->RequestID = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.OpenRequestIndex);
3794
3795         RtlZeroMemory( &stPipeOpen,
3796                        sizeof( AFSPipeOpenCloseRequestCB));
3797
3798         stPipeOpen.RequestId = (*Ccb)->RequestID;
3799
3800         stPipeOpen.RootId = pParentObjectInfo->VolumeCB->ObjectInformation.FileId;
3801
3802         //
3803         // Issue the open request to the service
3804         //
3805
3806         ntStatus = AFSProcessRequest( AFS_REQUEST_TYPE_PIPE_OPEN,
3807                                       AFS_REQUEST_FLAG_SYNCHRONOUS,
3808                                       AuthGroup,
3809                                       &DirectoryCB->NameInformation.FileName,
3810                                       NULL,
3811                                       (void *)&stPipeOpen,
3812                                       sizeof( AFSPipeOpenCloseRequestCB),
3813                                       NULL,
3814                                       NULL);
3815
3816         if( !NT_SUCCESS( ntStatus))
3817         {
3818
3819             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3820                           AFS_TRACE_LEVEL_ERROR,
3821                           "AFSOpenSpecialShareFcb (%08lX) Failed service open Status %08lX\n",
3822                           Irp,
3823                           ntStatus);
3824
3825             try_return( ntStatus);
3826         }
3827
3828         lCount = InterlockedIncrement( &(*Fcb)->OpenHandleCount);
3829
3830         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3831                       AFS_TRACE_LEVEL_VERBOSE,
3832                       "AFSOpenSpecialShareFcb Increment handle count on Fcb %08lX Cnt %d\n",
3833                       (*Fcb),
3834                       lCount);
3835
3836         //
3837         // Increment the open reference and handle on the parent node
3838         //
3839
3840         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenHandleCount);
3841
3842         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3843                       AFS_TRACE_LEVEL_VERBOSE,
3844                       "AFSOpenSpecialShareFcb Increment child open handle count on Parent object %08lX Cnt %d\n",
3845                       pParentObjectInfo,
3846                       lCount);
3847
3848         lCount = InterlockedIncrement( &pParentObjectInfo->Specific.Directory.ChildOpenReferenceCount);
3849
3850         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3851                       AFS_TRACE_LEVEL_VERBOSE,
3852                       "AFSOpenSpecialShareFcb Increment child open ref count on Parent object %08lX Cnt %d\n",
3853                       pParentObjectInfo,
3854                       lCount);
3855
3856         //
3857         // Return the open result for this file
3858         //
3859
3860         Irp->IoStatus.Information = FILE_OPENED;
3861
3862 try_exit:
3863
3864         if( bReleaseFcb)
3865         {
3866
3867             if( !NT_SUCCESS( ntStatus))
3868             {
3869                 //
3870                 // Decrement the open count on this Fcb
3871                 //
3872
3873                 lCount = InterlockedDecrement( &(*Fcb)->OpenReferenceCount);
3874
3875                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
3876                               AFS_TRACE_LEVEL_VERBOSE,
3877                               "AFSOpenSpecialShareFcb Decrement count on Fcb %08lX Cnt %d\n",
3878                               (*Fcb),
3879                               lCount);
3880             }
3881
3882             AFSReleaseResource( &(*Fcb)->NPFcb->Resource);
3883         }
3884
3885         if( !NT_SUCCESS( ntStatus))
3886         {
3887
3888             if( bAllocatedCcb)
3889             {
3890
3891                 AFSRemoveCcb( NULL,
3892                               *Ccb);
3893             }
3894
3895             *Ccb = NULL;
3896
3897             if( bAllocateFcb)
3898             {
3899
3900                 //
3901                 // Need to tear down this Fcb since it is not in the tree for the worker thread
3902                 //
3903
3904                 AFSRemoveFcb( &DirectoryCB->ObjectInformation->Fcb);
3905             }
3906
3907             *Fcb = NULL;
3908         }
3909     }
3910
3911     return ntStatus;
3912 }