ce3046f821995ed168a656df8c064f8d770e0a0b
[openafs.git] / 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                 pDirCB = pCcb->DirectoryCB;
309
310                 //
311                 // If this entry is deleted then remove the object from the volume tree
312                 //
313
314                 if( BooleanFlagOn( pDirCB->Flags, AFS_DIR_ENTRY_DELETED))
315                 {
316
317                     if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB &&
318                         pObjectInfo->Links == 0)
319                     {
320
321                         //
322                         // Stop anything possibly in process
323                         //
324
325                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
326                                       AFS_TRACE_LEVEL_VERBOSE,
327                                       "AFSClose Acquiring Fcb extents lock %08lX EXCL %08lX\n",
328                                       &pFcb->NPFcb->Specific.File.ExtentsResource,
329                                       PsGetCurrentThread());
330
331                         AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
332                                         TRUE);
333
334                         pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
335
336                         KeSetEvent( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
337                                     0,
338                                     FALSE);
339
340                         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
341                                       AFS_TRACE_LEVEL_VERBOSE,
342                                       "AFSClose Releasing Fcb extents lock %08lX EXCL %08lX\n",
343                                       &pFcb->NPFcb->Specific.File.ExtentsResource,
344                                       PsGetCurrentThread());
345
346                         AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
347                     }
348
349                     AFSAcquireExcl( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
350                                     TRUE);
351
352                     AFSAcquireExcl( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
353                                     TRUE);
354
355                     if ( pDirCB->OpenReferenceCount == 0)
356                     {
357                         AFSDbgLogMsg( 0,
358                                       0,
359                                       "AFSClose (Other) OpenReferenceCount is Zero on DE %08lX Ccb %08lX FileName %wZ\n",
360                                       pDirCB,
361                                       pCcb,
362                                       &pDirCB->NameInformation.FileName);
363                     }
364
365                     ASSERT( pDirCB->OpenReferenceCount > 0);
366
367                     InterlockedDecrement( &pDirCB->OpenReferenceCount);
368
369                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
370                                   AFS_TRACE_LEVEL_VERBOSE,
371                                   "AFSClose (Other) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
372                                   &pDirCB->NameInformation.FileName,
373                                   pDirCB,
374                                   pCcb,
375                                   pDirCB->OpenReferenceCount);
376
377                     if( pDirCB->OpenReferenceCount == 0)
378                     {
379
380                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
381                                       AFS_TRACE_LEVEL_VERBOSE,
382                                       "AFSClose Deleting dir entry %08lX (%08lX) for %wZ  FID %08lX-%08lX-%08lX-%08lX\n",
383                                       pDirCB,
384                                       pObjectInfo,
385                                       &pDirCB->NameInformation.FileName,
386                                       pObjectInfo->FileId.Cell,
387                                       pObjectInfo->FileId.Volume,
388                                       pObjectInfo->FileId.Vnode,
389                                       pObjectInfo->FileId.Unique);
390
391                         //
392                         // Remove and delete the directory entry from the parent list
393                         //
394
395                         AFSDeleteDirEntry( pObjectInfo->ParentObjectInformation,
396                                            pDirCB);
397
398                         AFSAcquireShared( &pObjectInfo->NonPagedInfo->ObjectInfoLock,
399                                           TRUE);
400
401                         if( pObjectInfo->ObjectReferenceCount <= 0)
402                         {
403
404                             if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
405                             {
406
407                                 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
408                                               AFS_TRACE_LEVEL_VERBOSE,
409                                               "AFSClose Removing object %08lX from volume tree\n",
410                                               pObjectInfo);
411
412                                 AFSRemoveHashEntry( &pObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
413                                                     &pObjectInfo->TreeEntry);
414
415                                 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE);
416                             }
417                         }
418
419                         AFSReleaseResource( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
420                     }
421
422                     AFSReleaseResource( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
423
424                     AFSReleaseResource( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
425                 }
426                 else
427                 {
428
429                     ASSERT( pDirCB->OpenReferenceCount > 0);
430
431                     InterlockedDecrement( &pDirCB->OpenReferenceCount);
432
433                     AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
434                                   AFS_TRACE_LEVEL_VERBOSE,
435                                   "AFSClose (Other2) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
436                                   &pDirCB->NameInformation.FileName,
437                                   pDirCB,
438                                   pCcb,
439                                   pDirCB->OpenReferenceCount);
440                 }
441
442                 //
443                 // If this is not the root then decrement the open child reference count
444                 //
445
446                 if( pObjectInfo != NULL &&
447                     pObjectInfo->ParentObjectInformation != NULL &&
448                     pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
449                 {
450
451                     InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
452
453                     AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
454                                   AFS_TRACE_LEVEL_VERBOSE,
455                                   "AFSClose Decrement child open ref count on Parent object %08lX Cnt %d\n",
456                                   pObjectInfo->ParentObjectInformation,
457                                   pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
458                 }
459
460                 if( pFcb->OpenReferenceCount == 1 &&
461                     pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
462                 {
463
464                     SetFlag( pFcb->Flags, AFS_FCB_FILE_CLOSED);
465
466                     //
467                     // Attempt to tear down our extent list for the file
468                     // If there are remaining dirty extents then attempt to
469                     // flush them as well
470                     //
471
472                     if( pFcb->Specific.File.ExtentsDirtyCount)
473                     {
474
475                         AFSFlushExtents( pFcb,
476                                          &pCcb->AuthGroup);
477                     }
478
479                     //
480                     // Wait for any outstanding queued flushes to complete
481                     //
482
483                     AFSWaitOnQueuedFlushes( pFcb);
484
485                     ASSERT( pFcb->Specific.File.ExtentsDirtyCount == 0 &&
486                             pFcb->Specific.File.QueuedFlushCount == 0);
487
488                     AFSReleaseResource( &pFcb->NPFcb->Resource);
489
490                     //
491                     // Tear 'em down, we'll not be needing them again
492                     //
493
494                     AFSTearDownFcbExtents( pFcb,
495                                            &pCcb->AuthGroup);
496                 }
497                 else
498                 {
499
500                     if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB &&
501                         pFcb->Specific.File.ExtentsDirtyCount &&
502                         (pCcb->GrantedAccess & FILE_WRITE_DATA))
503                     {
504
505                         AFSFlushExtents( pFcb,
506                                          &pCcb->AuthGroup);
507                     }
508
509                     AFSReleaseResource( &pFcb->NPFcb->Resource);
510                 }
511
512                 //
513                 // Remove the Ccb and de-allocate it
514                 //
515
516                 ntStatus = AFSRemoveCcb( pFcb,
517                                          pCcb);
518
519                 if( !NT_SUCCESS( ntStatus))
520                 {
521
522                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
523                                   AFS_TRACE_LEVEL_WARNING,
524                                   "AFSClose Failed to remove Ccb from Fcb Status %08lX\n",
525                                   ntStatus);
526
527                     //
528                     // We can't actually fail a close operation so reset the status
529                     //
530
531                     ntStatus = STATUS_SUCCESS;
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 }