src/WINNT/afsrdr/kernel/lib/AFSClose.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: AFSClose.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 //
  42 // Function: AFSClose
  43 //
  44 // Description:
  45 //
  46 //      This function is the IRP_MJ_CLOSE dispatch handler
  47 //
  48 // Return:
  49 //
  50 //       A status is returned for the handling of this request
  51 //
  52
  53 NTSTATUS
  54 AFSClose( IN PDEVICE_OBJECT LibDeviceObject,
  55           IN PIRP Irp)
  56 {
  57
  58     NTSTATUS ntStatus = STATUS_SUCCESS;
  59     ULONG ulRequestType = 0;
  60     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
  61     AFSFcb *pFcb = NULL;
  62     AFSDeviceExt *pDeviceExt = NULL;
  63     AFSCcb *pCcb = NULL;
  64     AFSObjectInfoCB *pObjectInfo = NULL;
  65     AFSDirectoryCB *pDirCB = NULL;
  66
  67     __try
  68     {
  69
  70         if( AFSRDRDeviceObject == NULL)
  71         {
  72
  73             //
  74             // Let this through, it's an close on the library control device
  75             //
  76
  77             try_return( ntStatus);
  78         }
  79
  80         pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
  81
  82         pIrpSp = IoGetCurrentIrpStackLocation( Irp);
  83
  84         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
  85
  86         if( pFcb == NULL)
  87         {
  88             try_return( ntStatus);
  89         }
  90
  91         pObjectInfo = pFcb->ObjectInformation;
  92
  93         //
  94         // Perform the close functionality depending on the type of node it is
  95         //
  96
  97         switch( pFcb->Header.NodeTypeCode)
  98         {
  99
 100             case AFS_IOCTL_FCB:
 101             {
 102
 103                 AFSPIOCtlOpenCloseRequestCB stPIOCtlClose;
 104                 AFSFileID stParentFileId;
 105
 106                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 107                               AFS_TRACE_LEVEL_VERBOSE,
 108                               "AFSClose Acquiring GlobalRoot lock %08lX EXCL %08lX\n",
 109                               &pFcb->NPFcb->Resource,
 110                               PsGetCurrentThread());
 111
 112                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 113                                   TRUE);
 114
 115                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 116
 117                 //
 118                 // Send the close to the CM
 119                 //
 120
 121                 RtlZeroMemory( &stPIOCtlClose,
 122                                sizeof( AFSPIOCtlOpenCloseRequestCB));
 123
 124                 stPIOCtlClose.RequestId = pCcb->RequestID;
 125
 126                 stPIOCtlClose.RootId = pObjectInfo->VolumeCB->ObjectInformation.FileId;
 127
 128                 RtlZeroMemory( &stParentFileId,
 129                                sizeof( AFSFileID));
 130
 131                 stParentFileId = pObjectInfo->ParentObjectInformation->FileId;
 132
 133                 //
 134                 // Issue the close request to the service
 135                 //
 136
 137                 AFSProcessRequest( AFS_REQUEST_TYPE_PIOCTL_CLOSE,
 138                                    AFS_REQUEST_FLAG_SYNCHRONOUS,
 139                                    &pCcb->AuthGroup,
 140                                    NULL,
 141                                    &stParentFileId,
 142                                    (void *)&stPIOCtlClose,
 143                                    sizeof( AFSPIOCtlOpenCloseRequestCB),
 144                                    NULL,
 145                                    NULL);
 146
 147                 pDirCB = pCcb->DirectoryCB;
 148
 149                 //
 150                 // Remove the Ccb and de-allocate it
 151                 //
 152
 153                 ntStatus = AFSRemoveCcb( pFcb,
 154                                          pCcb);
 155
 156                 if( !NT_SUCCESS( ntStatus))
 157                 {
 158
 159                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 160                                   AFS_TRACE_LEVEL_WARNING,
 161                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
 162
 163                     //
 164                     // We can't actually fail a close operation so reset the status
 165                     //
 166
 167                     ntStatus = STATUS_SUCCESS;
 168                 }
 169
 170                 ASSERT( pDirCB->OpenReferenceCount > 0);
 171
 172                 InterlockedDecrement( &pDirCB->OpenReferenceCount);
 173
 174                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 175                               AFS_TRACE_LEVEL_VERBOSE,
 176                               "AFSClose (IOCtl) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 177                               &pDirCB->NameInformation.FileName,
 178                               pDirCB,
 179                               pCcb,
 180                               pDirCB->OpenReferenceCount);
 181
 182                 //
 183                 // If this is not the root then decrement the open child reference count
 184                 //
 185
 186                 if( pObjectInfo->ParentObjectInformation != NULL &&
 187                     pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
 188                 {
 189
 190                     InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 191
 192                     AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 193                                   AFS_TRACE_LEVEL_VERBOSE,
 194                                   "AFSClose (IOCtl) Decrement child open ref count on Parent object %08lX Cnt %d\n",
 195                                   pObjectInfo->ParentObjectInformation,
 196                                   pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 197                 }
 198
 199                 AFSReleaseResource( &pFcb->NPFcb->Resource);
 200
 201                 ASSERT( pFcb->OpenReferenceCount != 0);
 202
 203                 InterlockedDecrement( &pFcb->OpenReferenceCount);
 204
 205                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 206                               AFS_TRACE_LEVEL_VERBOSE,
 207                               "AFSClose (IOCtl) Decrement count on Fcb %08lX Cnt %d\n",
 208                               pFcb,
 209                               pFcb->OpenReferenceCount);
 210
 211                 break;
 212             }
 213
 214             case AFS_ROOT_ALL:
 215             {
 216
 217                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 218                               AFS_TRACE_LEVEL_VERBOSE,
 219                               "AFSClose Acquiring Special Root ALL lock %08lX EXCL %08lX\n",
 220                               &pFcb->NPFcb->Resource,
 221                               PsGetCurrentThread());
 222
 223                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 224                                 TRUE);
 225
 226                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 227
 228                 pDirCB = pCcb->DirectoryCB;
 229
 230                 //
 231                 // Remove the Ccb and de-allocate it
 232                 //
 233
 234                 ntStatus = AFSRemoveCcb( pFcb,
 235                                          pCcb);
 236
 237                 if( !NT_SUCCESS( ntStatus))
 238                 {
 239
 240                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 241                                   AFS_TRACE_LEVEL_WARNING,
 242                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
 243
 244                     //
 245                     // We can't actually fail a close operation so reset the status
 246                     //
 247
 248                     ntStatus = STATUS_SUCCESS;
 249                 }
 250
 251                 ASSERT( pDirCB->OpenReferenceCount > 0);
 252
 253                 InterlockedDecrement( &pDirCB->OpenReferenceCount);
 254
 255                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 256                               AFS_TRACE_LEVEL_VERBOSE,
 257                               "AFSClose Decrement (Root ALL) count on %wZ DE %p Ccb %p Cnt %d\n",
 258                               &pDirCB->NameInformation.FileName,
 259                               pDirCB,
 260                               pCcb,
 261                               pDirCB->OpenReferenceCount);
 262
 263                 AFSReleaseResource( &pFcb->NPFcb->Resource);
 264
 265                 ASSERT( pFcb->OpenReferenceCount > 0);
 266
 267                 InterlockedDecrement( &pFcb->OpenReferenceCount);
 268
 269                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 270                               AFS_TRACE_LEVEL_VERBOSE,
 271                               "AFSClose (RootAll) Decrement count on Fcb %08lX Cnt %d\n",
 272                               pFcb,
 273                               pFcb->OpenReferenceCount);
 274
 275                 break;
 276             }
 277
 278             //
 279             // Root, file or directory node
 280             //
 281
 282             case AFS_FILE_FCB:
 283             case AFS_ROOT_FCB:
 284             case AFS_DIRECTORY_FCB:
 285             case AFS_SYMBOLIC_LINK_FCB:
 286             case AFS_MOUNT_POINT_FCB:
 287             case AFS_DFS_LINK_FCB:
 288             case AFS_INVALID_FCB:
 289             {
 290
 291                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 292
 293                 //
 294                 // We may be performing some cleanup on the Fcb so grab it exclusive to ensure no collisions
 295                 //
 296
 297                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 298                               AFS_TRACE_LEVEL_VERBOSE,
 299                               "AFSClose Acquiring Dcb lock %08lX EXCL %08lX\n",
 300                               &pFcb->NPFcb->Resource,
 301                               PsGetCurrentThread());
 302
 303                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 304                                 TRUE);
 305
 306                 KeQueryTickCount( &pFcb->ObjectInformation->LastAccessCount);
 307
 308                 if( pFcb->OpenReferenceCount == 1 &&
 309                     pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
 310                 {
 311
 312                     SetFlag( pFcb->Flags, AFS_FCB_FILE_CLOSED);
 313
 314                     //
 315                     // Attempt to tear down our extent list for the file
 316                     // If there are remaining dirty extents then attempt to
 317                     // flush them as well
 318                     //
 319
 320                     if( pFcb->Specific.File.ExtentsDirtyCount)
 321                     {
 322
 323                         AFSFlushExtents( pFcb,
 324                                          &pCcb->AuthGroup);
 325                     }
 326
 327                     //
 328                     // Wait for any outstanding queued flushes to complete
 329                     //
 330
 331                     AFSWaitOnQueuedFlushes( pFcb);
 332
 333                     ASSERT( pFcb->Specific.File.ExtentsDirtyCount == 0 &&
 334                             pFcb->Specific.File.QueuedFlushCount == 0);
 335
 336                     AFSReleaseResource( &pFcb->NPFcb->Resource);
 337
 338                     //
 339                     // Tear 'em down, we'll not be needing them again
 340                     //
 341
 342                     AFSTearDownFcbExtents( pFcb,
 343                                            &pCcb->AuthGroup);
 344                 }
 345                 else
 346                 {
 347
 348                     if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB &&
 349                         pFcb->Specific.File.ExtentsDirtyCount &&
 350                         (pCcb->GrantedAccess & FILE_WRITE_DATA))
 351                     {
 352
 353                         AFSFlushExtents( pFcb,
 354                                          &pCcb->AuthGroup);
 355                     }
 356
 357                     AFSReleaseResource( &pFcb->NPFcb->Resource);
 358                 }
 359
 360                 pDirCB = pCcb->DirectoryCB;
 361
 362                 //
 363                 // Remove the Ccb and de-allocate it
 364                 //
 365
 366                 ntStatus = AFSRemoveCcb( pFcb,
 367                                          pCcb);
 368
 369                 if( !NT_SUCCESS( ntStatus))
 370                 {
 371
 372                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 373                                   AFS_TRACE_LEVEL_WARNING,
 374                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n",
 375                                   ntStatus);
 376
 377                     //
 378                     // We can't actually fail a close operation so reset the status
 379                     //
 380
 381                     ntStatus = STATUS_SUCCESS;
 382                 }
 383
 384                 //
 385                 // If this entry is deleted then remove the object from the volume tree
 386                 //
 387
 388                 if( BooleanFlagOn( pDirCB->Flags, AFS_DIR_ENTRY_DELETED))
 389                 {
 390
 391                     if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB &&
 392                         pObjectInfo->Links == 0)
 393                     {
 394
 395                         //
 396                         // Stop anything possibly in process
 397                         //
 398
 399                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 400                                       AFS_TRACE_LEVEL_VERBOSE,
 401                                       "AFSClose Acquiring Fcb extents lock %08lX EXCL %08lX\n",
 402                                       &pFcb->NPFcb->Specific.File.ExtentsResource,
 403                                       PsGetCurrentThread());
 404
 405                         AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
 406                                         TRUE);
 407
 408                         pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
 409
 410                         KeSetEvent( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
 411                                     0,
 412                                     FALSE);
 413
 414                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 415                                       AFS_TRACE_LEVEL_VERBOSE,
 416                                       "AFSClose Releasing Fcb extents lock %08lX EXCL %08lX\n",
 417                                       &pFcb->NPFcb->Specific.File.ExtentsResource,
 418                                       PsGetCurrentThread());
 419
 420                         AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
 421                     }
 422
 423                     AFSAcquireExcl( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
 424                                     TRUE);
 425
 426                     AFSAcquireExcl( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
 427                                     TRUE);
 428
 429                     if ( pDirCB->OpenReferenceCount == 0)
 430                     {
 431                         AFSDbgLogMsg( 0,
 432                                       0,
 433                                       "AFSClose (Other) OpenReferenceCount is Zero on DE %08lX Ccb %08lX FileName %wZ\n",
 434                                       pDirCB,
 435                                       pCcb,
 436                                       &pDirCB->NameInformation.FileName);
 437                     }
 438
 439                     ASSERT( pDirCB->OpenReferenceCount > 0);
 440
 441                     InterlockedDecrement( &pDirCB->OpenReferenceCount);
 442
 443                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 444                                   AFS_TRACE_LEVEL_VERBOSE,
 445                                   "AFSClose (Other) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 446                                   &pDirCB->NameInformation.FileName,
 447                                   pDirCB,
 448                                   pCcb,
 449                                   pDirCB->OpenReferenceCount);
 450
 451                     if( pDirCB->OpenReferenceCount == 0)
 452                     {
 453
 454                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
 455                                       AFS_TRACE_LEVEL_VERBOSE,
 456                                       "AFSClose Deleting dir entry %08lX (%08lX) for %wZ  FID %08lX-%08lX-%08lX-%08lX\n",
 457                                       pDirCB,
 458                                       pObjectInfo,
 459                                       &pDirCB->NameInformation.FileName,
 460                                       pObjectInfo->FileId.Cell,
 461                                       pObjectInfo->FileId.Volume,
 462                                       pObjectInfo->FileId.Vnode,
 463                                       pObjectInfo->FileId.Unique);
 464
 465                         //
 466                         // Remove and delete the directory entry from the parent list
 467                         //
 468
 469                         AFSDeleteDirEntry( pObjectInfo->ParentObjectInformation,
 470                                            pDirCB);
 471
 472                         AFSAcquireShared( &pObjectInfo->NonPagedInfo->ObjectInfoLock,
 473                                           TRUE);
 474
 475                         if( pObjectInfo->ObjectReferenceCount <= 0)
 476                         {
 477
 478                             if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
 479                             {
 480
 481                                 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
 482                                               AFS_TRACE_LEVEL_VERBOSE,
 483                                               "AFSClose Removing object %08lX from volume tree\n",
 484                                               pObjectInfo);
 485
 486                                 AFSRemoveHashEntry( &pObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
 487                                                     &pObjectInfo->TreeEntry);
 488
 489                                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE);
 490                             }
 491                         }
 492
 493                         AFSReleaseResource( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
 494                     }
 495
 496                     AFSReleaseResource( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
 497
 498                     AFSReleaseResource( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
 499                 }
 500                 else
 501                 {
 502
 503                     ASSERT( pDirCB->OpenReferenceCount > 0);
 504
 505                     InterlockedDecrement( &pDirCB->OpenReferenceCount);
 506
 507                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 508                                   AFS_TRACE_LEVEL_VERBOSE,
 509                                   "AFSClose (Other2) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 510                                   &pDirCB->NameInformation.FileName,
 511                                   pDirCB,
 512                                   pCcb,
 513                                   pDirCB->OpenReferenceCount);
 514                 }
 515
 516                 //
 517                 // If this is not the root then decrement the open child reference count
 518                 //
 519
 520                 if( pObjectInfo != NULL &&
 521                     pObjectInfo->ParentObjectInformation != NULL &&
 522                     pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
 523                 {
 524
 525                     InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 526
 527                     AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 528                                   AFS_TRACE_LEVEL_VERBOSE,
 529                                   "AFSClose Decrement child open ref count on Parent object %08lX Cnt %d\n",
 530                                   pObjectInfo->ParentObjectInformation,
 531                                   pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 532                 }
 533
 534                 //
 535                 // Decrement the reference count on the Fcb. this is protecting it from teardown.
 536                 //
 537
 538                 ASSERT( pFcb->OpenReferenceCount != 0);
 539
 540                 InterlockedDecrement( &pFcb->OpenReferenceCount);
 541
 542                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 543                               AFS_TRACE_LEVEL_VERBOSE,
 544                               "AFSClose Decrement count on Fcb %08lX Cnt %d\n",
 545                               pFcb,
 546                               pFcb->OpenReferenceCount);
 547
 548                 break;
 549             }
 550
 551             case AFS_SPECIAL_SHARE_FCB:
 552             {
 553
 554                 AFSPipeOpenCloseRequestCB stPipeClose;
 555
 556                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 557                               AFS_TRACE_LEVEL_VERBOSE,
 558                               "AFSClose Acquiring Special Share lock %08lX EXCL %08lX\n",
 559                               &pFcb->NPFcb->Resource,
 560                               PsGetCurrentThread());
 561
 562                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 563                                 TRUE);
 564
 565                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 566
 567                 pDirCB = pCcb->DirectoryCB;
 568
 569                 RtlZeroMemory( &stPipeClose,
 570                                sizeof( AFSPipeOpenCloseRequestCB));
 571
 572                 stPipeClose.RequestId = pCcb->RequestID;
 573
 574                 stPipeClose.RootId = pObjectInfo->VolumeCB->ObjectInformation.FileId;
 575
 576                 //
 577                 // Issue the open request to the service
 578                 //
 579
 580                 /*
 581                 AFSProcessRequest( AFS_REQUEST_TYPE_PIPE_CLOSE,
 582                                    AFS_REQUEST_FLAG_SYNCHRONOUS,
 583                                    &pFcb->AuthGroup,
 584                                    &pDirCB->NameInformation.FileName,
 585                                    NULL,
 586                                    (void *)&stPipeClose,
 587                                    sizeof( AFSPipeOpenCloseRequestCB),
 588                                    NULL,
 589                                    NULL);
 590                 */
 591
 592                 //
 593                 // Remove the Ccb and de-allocate it
 594                 //
 595
 596                 ntStatus = AFSRemoveCcb( pFcb,
 597                                          pCcb);
 598
 599                 if( !NT_SUCCESS( ntStatus))
 600                 {
 601
 602                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 603                                   AFS_TRACE_LEVEL_WARNING,
 604                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
 605
 606                     //
 607                     // We can't actually fail a close operation so reset the status
 608                     //
 609
 610                     ntStatus = STATUS_SUCCESS;
 611                 }
 612
 613                 ASSERT( pDirCB->OpenReferenceCount > 0);
 614
 615                 InterlockedDecrement( &pDirCB->OpenReferenceCount);
 616
 617                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 618                               AFS_TRACE_LEVEL_VERBOSE,
 619                               "AFSClose (Share) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 620                               &pDirCB->NameInformation.FileName,
 621                               pDirCB,
 622                               pCcb,
 623                               pDirCB->OpenReferenceCount);
 624
 625                 //
 626                 // If this is not the root then decrement the open child reference count
 627                 //
 628
 629                 if( pObjectInfo->ParentObjectInformation != NULL &&
 630                     pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
 631                 {
 632
 633                     InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 634
 635                     AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 636                                   AFS_TRACE_LEVEL_VERBOSE,
 637                                   "AFSClose (Share) Decrement child open ref count on Parent object %08lX Cnt %d\n",
 638                                   pObjectInfo->ParentObjectInformation,
 639                                   pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 640                 }
 641
 642                 AFSReleaseResource( &pFcb->NPFcb->Resource);
 643
 644                 ASSERT( pFcb->OpenReferenceCount != 0);
 645
 646                 InterlockedDecrement( &pFcb->OpenReferenceCount);
 647
 648                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 649                               AFS_TRACE_LEVEL_VERBOSE,
 650                               "AFSClose (Share) Decrement count on Fcb %08lX Cnt %d\n",
 651                               pFcb,
 652                               pFcb->OpenReferenceCount);
 653
 654                 break;
 655             }
 656
 657             default:
 658
 659                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 660                               AFS_TRACE_LEVEL_ERROR,
 661                               "AFSClose Processing unknown node type %d\n",
 662                               pFcb->Header.NodeTypeCode);
 663
 664                 break;
 665         }
 666
 667 try_exit:
 668
 669         //
 670         // Complete the request
 671         //
 672
 673         AFSCompleteRequest( Irp,
 674                             ntStatus);
 675     }
 676     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
 677     {
 678
 679         AFSDbgLogMsg( 0,
 680                       0,
 681                       "EXCEPTION - AFSClose\n");
 682
 683         AFSDumpTraceFilesFnc();
 684     }
 685
 686     return ntStatus;
 687 }