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             {
 289
 290                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 291
 292                 //
 293                 // We may be performing some cleanup on the Fcb so grab it exclusive to ensure no collisions
 294                 //
 295
 296                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 297                               AFS_TRACE_LEVEL_VERBOSE,
 298                               "AFSClose Acquiring Dcb lock %08lX EXCL %08lX\n",
 299                               &pFcb->NPFcb->Resource,
 300                               PsGetCurrentThread());
 301
 302                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 303                                 TRUE);
 304
 305                 KeQueryTickCount( &pFcb->ObjectInformation->LastAccessCount);
 306
 307                 pDirCB = pCcb->DirectoryCB;
 308
 309                 //
 310                 // If this entry is deleted then remove the object from the volume tree
 311                 //
 312
 313                 if( BooleanFlagOn( pDirCB->Flags, AFS_DIR_ENTRY_DELETED))
 314                 {
 315
 316                     if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
 317                     {
 318
 319                         //
 320                         // Stop anything possibly in process
 321                         //
 322
 323                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 324                                       AFS_TRACE_LEVEL_VERBOSE,
 325                                       "AFSClose Acquiring Fcb extents lock %08lX EXCL %08lX\n",
 326                                       &pFcb->NPFcb->Specific.File.ExtentsResource,
 327                                       PsGetCurrentThread());
 328
 329                         AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
 330                                         TRUE);
 331
 332                         pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
 333
 334                         KeSetEvent( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
 335                                     0,
 336                                     FALSE);
 337
 338                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 339                                       AFS_TRACE_LEVEL_VERBOSE,
 340                                       "AFSClose Releasing Fcb extents lock %08lX EXCL %08lX\n",
 341                                       &pFcb->NPFcb->Specific.File.ExtentsResource,
 342                                       PsGetCurrentThread());
 343
 344                         AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
 345                     }
 346
 347                     AFSAcquireExcl( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
 348                                     TRUE);
 349
 350                     AFSAcquireExcl( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
 351                                     TRUE);
 352
 353                     if ( pDirCB->OpenReferenceCount == 0)
 354                     {
 355                         AFSDbgLogMsg( 0,
 356                                       0,
 357                                       "AFSClose (Other) OpenReferenceCount is Zero on DE %08lX Ccb %08lX FileName %wZ\n",
 358                                       pDirCB,
 359                                       pCcb,
 360                                       &pDirCB->NameInformation.FileName);
 361                     }
 362
 363                     ASSERT( pDirCB->OpenReferenceCount > 0);
 364
 365                     InterlockedDecrement( &pDirCB->OpenReferenceCount);
 366
 367                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 368                                   AFS_TRACE_LEVEL_VERBOSE,
 369                                   "AFSClose (Other) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 370                                   &pDirCB->NameInformation.FileName,
 371                                   pDirCB,
 372                                   pCcb,
 373                                   pDirCB->OpenReferenceCount);
 374
 375                     if( pDirCB->OpenReferenceCount == 0)
 376                     {
 377
 378                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
 379                                       AFS_TRACE_LEVEL_VERBOSE,
 380                                       "AFSClose Deleting dir entry %08lX (%08lX) for %wZ\n",
 381                                       pDirCB,
 382                                       pObjectInfo,
 383                                       &pDirCB->NameInformation.FileName);
 384
 385                         //
 386                         // Remove and delete the directory entry from the parent list
 387                         //
 388
 389                         AFSDeleteDirEntry( pObjectInfo->ParentObjectInformation,
 390                                            pDirCB);
 391
 392                         if( pObjectInfo->ObjectReferenceCount == 0)
 393                         {
 394
 395                             if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
 396                             {
 397
 398                                 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
 399                                               AFS_TRACE_LEVEL_VERBOSE,
 400                                               "AFSClose Removing object %08lX from volume tree\n",
 401                                               pObjectInfo);
 402
 403                                 AFSRemoveHashEntry( &pObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
 404                                                     &pObjectInfo->TreeEntry);
 405
 406                                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE);
 407                             }
 408
 409                             SetFlag( pObjectInfo->Flags, AFS_OBJECT_FLAGS_DELETED);
 410                         }
 411                     }
 412
 413                     AFSReleaseResource( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
 414
 415                     AFSReleaseResource( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
 416                 }
 417                 else
 418                 {
 419
 420                     ASSERT( pDirCB->OpenReferenceCount > 0);
 421
 422                     InterlockedDecrement( &pDirCB->OpenReferenceCount);
 423
 424                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 425                                   AFS_TRACE_LEVEL_VERBOSE,
 426                                   "AFSClose (Other2) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 427                                   &pDirCB->NameInformation.FileName,
 428                                   pDirCB,
 429                                   pCcb,
 430                                   pDirCB->OpenReferenceCount);
 431                 }
 432
 433                 //
 434                 // If this is not the root then decrement the open child reference count
 435                 //
 436
 437                 if( pObjectInfo != NULL &&
 438                     pObjectInfo->ParentObjectInformation != NULL &&
 439                     pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
 440                 {
 441
 442                     InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 443
 444                     AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 445                                   AFS_TRACE_LEVEL_VERBOSE,
 446                                   "AFSClose Decrement child open ref count on Parent object %08lX Cnt %d\n",
 447                                   pObjectInfo->ParentObjectInformation,
 448                                   pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 449                 }
 450
 451                 if( pFcb->OpenReferenceCount == 1 &&
 452                     pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
 453                 {
 454
 455                     SetFlag( pFcb->Flags, AFS_FCB_FILE_CLOSED);
 456
 457                     //
 458                     // Attempt to tear down our extent list for the file
 459                     // If there are remaining dirty extents then attempt to
 460                     // flush them as well
 461                     //
 462
 463                     if( pFcb->Specific.File.ExtentsDirtyCount)
 464                     {
 465
 466                         AFSFlushExtents( pFcb,
 467                                          &pCcb->AuthGroup);
 468                     }
 469
 470                     //
 471                     // Wait for any outstanding queued flushes to complete
 472                     //
 473
 474                     AFSWaitOnQueuedFlushes( pFcb);
 475
 476                     ASSERT( pFcb->Specific.File.ExtentsDirtyCount == 0 &&
 477                             pFcb->Specific.File.QueuedFlushCount == 0);
 478
 479                     AFSReleaseResource( &pFcb->NPFcb->Resource);
 480
 481                     //
 482                     // Tear 'em down, we'll not be needing them again
 483                     //
 484
 485                     if( AFSTearDownFcbExtents( pFcb,
 486                                                &pCcb->AuthGroup))
 487                     {
 488
 489                         //
 490                         // Indicate to the service that the file required complete flushing to the
 491                         // server.
 492                         //
 493
 494                         AFSProcessRequest( AFS_REQUEST_TYPE_FLUSH_FILE,
 495                                            AFS_REQUEST_FLAG_SYNCHRONOUS,
 496                                            &pCcb->AuthGroup,
 497                                            NULL,
 498                                            &pFcb->ObjectInformation->FileId,
 499                                            NULL,
 500                                            0,
 501                                            NULL,
 502                                            NULL);
 503                     }
 504                 }
 505                 else
 506                 {
 507
 508                     if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
 509                     {
 510
 511                         if( pFcb->Specific.File.ExtentsDirtyCount)
 512                         {
 513
 514                             AFSFlushExtents( pFcb,
 515                                              &pCcb->AuthGroup);
 516                         }
 517                     }
 518
 519                     AFSReleaseResource( &pFcb->NPFcb->Resource);
 520                 }
 521
 522                 //
 523                 // Remove the Ccb and de-allocate it
 524                 //
 525
 526                 ntStatus = AFSRemoveCcb( pFcb,
 527                                          pCcb);
 528
 529                 if( !NT_SUCCESS( ntStatus))
 530                 {
 531
 532                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 533                                   AFS_TRACE_LEVEL_WARNING,
 534                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n",
 535                                   ntStatus);
 536
 537                     //
 538                     // We can't actually fail a close operation so reset the status
 539                     //
 540
 541                     ntStatus = STATUS_SUCCESS;
 542                 }
 543
 544                 //
 545                 // Decrement the reference count on the Fcb. this is protecting it from teardown.
 546                 //
 547
 548                 ASSERT( pFcb->OpenReferenceCount != 0);
 549
 550                 InterlockedDecrement( &pFcb->OpenReferenceCount);
 551
 552                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 553                               AFS_TRACE_LEVEL_VERBOSE,
 554                               "AFSClose Decrement count on Fcb %08lX Cnt %d\n",
 555                               pFcb,
 556                               pFcb->OpenReferenceCount);
 557
 558                 break;
 559             }
 560
 561             case AFS_SPECIAL_SHARE_FCB:
 562             {
 563
 564                 AFSPipeOpenCloseRequestCB stPipeClose;
 565
 566                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 567                               AFS_TRACE_LEVEL_VERBOSE,
 568                               "AFSClose Acquiring Special Share lock %08lX EXCL %08lX\n",
 569                               &pFcb->NPFcb->Resource,
 570                               PsGetCurrentThread());
 571
 572                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 573                                 TRUE);
 574
 575                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 576
 577                 pDirCB = pCcb->DirectoryCB;
 578
 579                 RtlZeroMemory( &stPipeClose,
 580                                sizeof( AFSPipeOpenCloseRequestCB));
 581
 582                 stPipeClose.RequestId = pCcb->RequestID;
 583
 584                 stPipeClose.RootId = pObjectInfo->VolumeCB->ObjectInformation.FileId;
 585
 586                 //
 587                 // Issue the open request to the service
 588                 //
 589
 590                 /*
 591                 AFSProcessRequest( AFS_REQUEST_TYPE_PIPE_CLOSE,
 592                                    AFS_REQUEST_FLAG_SYNCHRONOUS,
 593                                    &pFcb->AuthGroup,
 594                                    &pDirCB->NameInformation.FileName,
 595                                    NULL,
 596                                    (void *)&stPipeClose,
 597                                    sizeof( AFSPipeOpenCloseRequestCB),
 598                                    NULL,
 599                                    NULL);
 600                 */
 601
 602                 //
 603                 // Remove the Ccb and de-allocate it
 604                 //
 605
 606                 ntStatus = AFSRemoveCcb( pFcb,
 607                                          pCcb);
 608
 609                 if( !NT_SUCCESS( ntStatus))
 610                 {
 611
 612                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 613                                   AFS_TRACE_LEVEL_WARNING,
 614                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
 615
 616                     //
 617                     // We can't actually fail a close operation so reset the status
 618                     //
 619
 620                     ntStatus = STATUS_SUCCESS;
 621                 }
 622
 623                 ASSERT( pDirCB->OpenReferenceCount > 0);
 624
 625                 InterlockedDecrement( &pDirCB->OpenReferenceCount);
 626
 627                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
 628                               AFS_TRACE_LEVEL_VERBOSE,
 629                               "AFSClose (Share) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
 630                               &pDirCB->NameInformation.FileName,
 631                               pDirCB,
 632                               pCcb,
 633                               pDirCB->OpenReferenceCount);
 634
 635                 //
 636                 // If this is not the root then decrement the open child reference count
 637                 //
 638
 639                 if( pObjectInfo->ParentObjectInformation != NULL &&
 640                     pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
 641                 {
 642
 643                     InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 644
 645                     AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 646                                   AFS_TRACE_LEVEL_VERBOSE,
 647                                   "AFSClose (Share) Decrement child open ref count on Parent object %08lX Cnt %d\n",
 648                                   pObjectInfo->ParentObjectInformation,
 649                                   pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
 650                 }
 651
 652                 AFSReleaseResource( &pFcb->NPFcb->Resource);
 653
 654                 ASSERT( pFcb->OpenReferenceCount != 0);
 655
 656                 InterlockedDecrement( &pFcb->OpenReferenceCount);
 657
 658                 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
 659                               AFS_TRACE_LEVEL_VERBOSE,
 660                               "AFSClose (Share) Decrement count on Fcb %08lX Cnt %d\n",
 661                               pFcb,
 662                               pFcb->OpenReferenceCount);
 663
 664                 break;
 665             }
 666
 667             default:
 668
 669                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 670                               AFS_TRACE_LEVEL_ERROR,
 671                               "AFSClose Processing unknown node type %d\n",
 672                               pFcb->Header.NodeTypeCode);
 673
 674                 break;
 675         }
 676
 677 try_exit:
 678
 679         //
 680         // Complete the request
 681         //
 682
 683         AFSCompleteRequest( Irp,
 684                             ntStatus);
 685     }
 686     __except( AFSExceptionFilter( GetExceptionCode(), GetExceptionInformation()) )
 687     {
 688
 689         AFSDbgLogMsg( 0,
 690                       0,
 691                       "EXCEPTION - AFSClose\n");
 692     }
 693
 694     return ntStatus;
 695 }