2 * Copyright (c) 2008, 2009, 2010, 2011 Kernel Drivers, LLC.
3 * Copyright (c) 2009, 2010, 2011 Your File System, Inc.
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39 #include "AFSCommon.h"
46 // This function is the IRP_MJ_CLOSE dispatch handler
50 // A status is returned for the handling of this request
54 AFSClose( IN PDEVICE_OBJECT LibDeviceObject,
57 UNREFERENCED_PARAMETER(LibDeviceObject);
58 NTSTATUS ntStatus = STATUS_SUCCESS;
59 IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
61 AFSDeviceExt *pDeviceExt = NULL;
63 AFSObjectInfoCB *pObjectInfo = NULL;
64 AFSDirectoryCB *pDirCB = NULL;
70 if( AFSRDRDeviceObject == NULL)
74 // Let this through, it's an close on the library control device
77 try_return( ntStatus);
80 pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
82 pIrpSp = IoGetCurrentIrpStackLocation( Irp);
84 pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
88 try_return( ntStatus);
91 pObjectInfo = pFcb->ObjectInformation;
94 // Perform the close functionality depending on the type of node it is
97 switch( pFcb->Header.NodeTypeCode)
103 AFSPIOCtlOpenCloseRequestCB stPIOCtlClose;
104 AFSFileID stParentFileId;
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());
112 AFSAcquireExcl( &pFcb->NPFcb->Resource,
115 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
118 // Send the close to the CM
121 RtlZeroMemory( &stPIOCtlClose,
122 sizeof( AFSPIOCtlOpenCloseRequestCB));
124 stPIOCtlClose.RequestId = pCcb->RequestID;
126 stPIOCtlClose.RootId = pObjectInfo->VolumeCB->ObjectInformation.FileId;
128 RtlZeroMemory( &stParentFileId,
131 stParentFileId = pObjectInfo->ParentObjectInformation->FileId;
134 // Issue the close request to the service
137 AFSProcessRequest( AFS_REQUEST_TYPE_PIOCTL_CLOSE,
138 AFS_REQUEST_FLAG_SYNCHRONOUS,
142 (void *)&stPIOCtlClose,
143 sizeof( AFSPIOCtlOpenCloseRequestCB),
147 pDirCB = pCcb->DirectoryCB;
150 // Remove the Ccb and de-allocate it
153 ntStatus = AFSRemoveCcb( pFcb,
156 if( !NT_SUCCESS( ntStatus))
159 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
160 AFS_TRACE_LEVEL_WARNING,
161 "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
164 // We can't actually fail a close operation so reset the status
167 ntStatus = STATUS_SUCCESS;
170 lCount = InterlockedDecrement( &pDirCB->DirOpenReferenceCount);
172 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
173 AFS_TRACE_LEVEL_VERBOSE,
174 "AFSClose (IOCtl) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
175 &pDirCB->NameInformation.FileName,
180 ASSERT( lCount >= 0);
183 // If this is not the root then decrement the open child reference count
186 if( pObjectInfo->ParentObjectInformation != NULL &&
187 pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
190 InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
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);
199 AFSReleaseResource( &pFcb->NPFcb->Resource);
201 lCount = InterlockedDecrement( &pFcb->OpenReferenceCount);
203 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
204 AFS_TRACE_LEVEL_VERBOSE,
205 "AFSClose (IOCtl) Decrement count on Fcb %08lX Cnt %d\n",
209 ASSERT( lCount >= 0);
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());
223 AFSAcquireExcl( &pFcb->NPFcb->Resource,
226 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
228 pDirCB = pCcb->DirectoryCB;
231 // Remove the Ccb and de-allocate it
234 ntStatus = AFSRemoveCcb( pFcb,
237 if( !NT_SUCCESS( ntStatus))
240 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
241 AFS_TRACE_LEVEL_WARNING,
242 "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
245 // We can't actually fail a close operation so reset the status
248 ntStatus = STATUS_SUCCESS;
251 lCount = InterlockedDecrement( &pDirCB->DirOpenReferenceCount);
253 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
254 AFS_TRACE_LEVEL_VERBOSE,
255 "AFSClose Decrement (Root ALL) count on %wZ DE %p Ccb %p Cnt %d\n",
256 &pDirCB->NameInformation.FileName,
261 ASSERT( lCount >= 0);
263 AFSReleaseResource( &pFcb->NPFcb->Resource);
265 lCount = InterlockedDecrement( &pFcb->OpenReferenceCount);
267 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
268 AFS_TRACE_LEVEL_VERBOSE,
269 "AFSClose (RootAll) Decrement count on Fcb %08lX Cnt %d\n",
273 ASSERT( lCount >= 0);
279 // Root, file or directory node
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:
291 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
294 // We may be performing some cleanup on the Fcb so grab it exclusive to ensure no collisions
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());
303 AFSAcquireExcl( &pFcb->NPFcb->Resource,
306 KeQueryTickCount( &pFcb->ObjectInformation->LastAccessCount);
308 if( pFcb->OpenReferenceCount == 1 &&
309 pFcb->Header.NodeTypeCode == AFS_FILE_FCB)
312 SetFlag( pFcb->Flags, AFS_FCB_FILE_CLOSED);
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
320 if( pFcb->Specific.File.ExtentsDirtyCount)
323 AFSFlushExtents( pFcb,
328 // Wait for any outstanding queued flushes to complete
331 AFSWaitOnQueuedFlushes( pFcb);
333 ASSERT( pFcb->Specific.File.ExtentsDirtyCount == 0 &&
334 pFcb->Specific.File.QueuedFlushCount == 0);
336 AFSReleaseResource( &pFcb->NPFcb->Resource);
339 // Tear 'em down, we'll not be needing them again
342 AFSTearDownFcbExtents( pFcb,
348 if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB &&
349 pFcb->Specific.File.ExtentsDirtyCount &&
350 (pCcb->GrantedAccess & FILE_WRITE_DATA))
353 AFSFlushExtents( pFcb,
357 AFSReleaseResource( &pFcb->NPFcb->Resource);
360 pDirCB = pCcb->DirectoryCB;
363 // Remove the Ccb and de-allocate it
366 ntStatus = AFSRemoveCcb( pFcb,
369 if( !NT_SUCCESS( ntStatus))
372 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
373 AFS_TRACE_LEVEL_WARNING,
374 "AFSClose Failed to remove Ccb from Fcb Status %08lX\n",
378 // We can't actually fail a close operation so reset the status
381 ntStatus = STATUS_SUCCESS;
385 // If this entry is deleted then remove the object from the volume tree
388 if( BooleanFlagOn( pDirCB->Flags, AFS_DIR_ENTRY_DELETED))
391 if( pFcb->Header.NodeTypeCode == AFS_FILE_FCB &&
392 pObjectInfo->Links == 0)
396 // Stop anything possibly in process
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());
405 AFSAcquireExcl( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource,
408 pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestStatus = STATUS_FILE_DELETED;
410 KeSetEvent( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsRequestComplete,
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());
420 AFSReleaseResource( &pObjectInfo->Fcb->NPFcb->Specific.File.ExtentsResource);
423 AFSAcquireExcl( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
426 AFSAcquireExcl( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock,
429 lCount = InterlockedDecrement( &pDirCB->DirOpenReferenceCount);
431 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
432 AFS_TRACE_LEVEL_VERBOSE,
433 "AFSClose (Other) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
434 &pDirCB->NameInformation.FileName,
439 ASSERT( lCount >= 0);
444 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
445 AFS_TRACE_LEVEL_VERBOSE,
446 "AFSClose Deleting dir entry %08lX (%08lX) for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
449 &pDirCB->NameInformation.FileName,
450 pObjectInfo->FileId.Cell,
451 pObjectInfo->FileId.Volume,
452 pObjectInfo->FileId.Vnode,
453 pObjectInfo->FileId.Unique);
456 // Remove and delete the directory entry from the parent list
459 AFSDeleteDirEntry( pObjectInfo->ParentObjectInformation,
462 AFSAcquireShared( &pObjectInfo->NonPagedInfo->ObjectInfoLock,
465 if( pObjectInfo->ObjectReferenceCount <= 0)
468 if( BooleanFlagOn( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE))
471 AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
472 AFS_TRACE_LEVEL_VERBOSE,
473 "AFSClose Removing object %08lX from volume tree\n",
476 AFSRemoveHashEntry( &pObjectInfo->VolumeCB->ObjectInfoTree.TreeHead,
477 &pObjectInfo->TreeEntry);
479 ClearFlag( pObjectInfo->Flags, AFS_OBJECT_INSERTED_HASH_TREE);
483 AFSReleaseResource( &pObjectInfo->NonPagedInfo->ObjectInfoLock);
486 AFSReleaseResource( pObjectInfo->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock);
488 AFSReleaseResource( pObjectInfo->VolumeCB->ObjectInfoTree.TreeLock);
493 lCount = InterlockedDecrement( &pDirCB->DirOpenReferenceCount);
495 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
496 AFS_TRACE_LEVEL_VERBOSE,
497 "AFSClose (Other2) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
498 &pDirCB->NameInformation.FileName,
503 ASSERT( lCount >= 0);
507 // If this is not the root then decrement the open child reference count
510 if( pObjectInfo != NULL &&
511 pObjectInfo->ParentObjectInformation != NULL &&
512 pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
515 InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
517 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
518 AFS_TRACE_LEVEL_VERBOSE,
519 "AFSClose Decrement child open ref count on Parent object %08lX Cnt %d\n",
520 pObjectInfo->ParentObjectInformation,
521 pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
525 // Decrement the reference count on the Fcb. this is protecting it from teardown.
528 lCount = InterlockedDecrement( &pFcb->OpenReferenceCount);
530 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
531 AFS_TRACE_LEVEL_VERBOSE,
532 "AFSClose Decrement count on Fcb %08lX Cnt %d\n",
536 ASSERT( lCount >= 0);
541 case AFS_SPECIAL_SHARE_FCB:
544 AFSPipeOpenCloseRequestCB stPipeClose;
546 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
548 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
549 AFS_TRACE_LEVEL_VERBOSE,
550 "AFSClose Acquiring Special Share lock %08lX EXCL %08lX\n",
551 &pFcb->NPFcb->Resource,
552 PsGetCurrentThread());
554 AFSAcquireExcl( &pFcb->NPFcb->Resource,
557 RtlZeroMemory( &stPipeClose,
558 sizeof( AFSPipeOpenCloseRequestCB));
560 stPipeClose.RequestId = pCcb->RequestID;
562 stPipeClose.RootId = pObjectInfo->VolumeCB->ObjectInformation.FileId;
565 // Issue the open request to the service
569 AFSProcessRequest( AFS_REQUEST_TYPE_PIPE_CLOSE,
570 AFS_REQUEST_FLAG_SYNCHRONOUS,
572 &pDirCB->NameInformation.FileName,
574 (void *)&stPipeClose,
575 sizeof( AFSPipeOpenCloseRequestCB),
580 pDirCB = pCcb->DirectoryCB;
583 // Remove the Ccb and de-allocate it
586 ntStatus = AFSRemoveCcb( pFcb,
589 if( !NT_SUCCESS( ntStatus))
592 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
593 AFS_TRACE_LEVEL_WARNING,
594 "AFSClose Failed to remove Ccb from Fcb Status %08lX\n", ntStatus);
597 // We can't actually fail a close operation so reset the status
600 ntStatus = STATUS_SUCCESS;
603 lCount = InterlockedDecrement( &pDirCB->DirOpenReferenceCount);
605 AFSDbgLogMsg( AFS_SUBSYSTEM_DIRENTRY_REF_COUNTING,
606 AFS_TRACE_LEVEL_VERBOSE,
607 "AFSClose (Share) Decrement count on %wZ DE %p Ccb %p Cnt %d\n",
608 &pDirCB->NameInformation.FileName,
613 ASSERT( lCount >= 0);
616 // If this is not the root then decrement the open child reference count
619 if( pObjectInfo->ParentObjectInformation != NULL &&
620 pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)
623 lCount = InterlockedDecrement( &pObjectInfo->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
625 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
626 AFS_TRACE_LEVEL_VERBOSE,
627 "AFSClose (Share) Decrement child open ref count on Parent object %08lX Cnt %d\n",
628 pObjectInfo->ParentObjectInformation,
632 AFSReleaseResource( &pFcb->NPFcb->Resource);
634 lCount = InterlockedDecrement( &pFcb->OpenReferenceCount);
636 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
637 AFS_TRACE_LEVEL_VERBOSE,
638 "AFSClose (Share) Decrement count on Fcb %08lX Cnt %d\n",
642 ASSERT( lCount >= 0);
649 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
650 AFS_TRACE_LEVEL_ERROR,
651 "AFSClose Processing unknown node type %d\n",
652 pFcb->Header.NodeTypeCode);
660 // Complete the request
663 AFSCompleteRequest( Irp,
666 __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
671 "EXCEPTION - AFSClose\n");
673 AFSDumpTraceFilesFnc();