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3 * Copyright (c) 2009, 2010, 2011 Your File System, Inc.
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36 // File: AFSFcbSupport.cpp
39 #include "AFSCommon.h"
42 // Function: AFSInitFcb
46 // This function performs Fcb initialization
50 // A status is returned for the function
54 AFSInitFcb( IN AFSDirectoryCB *DirEntry,
58 NTSTATUS ntStatus = STATUS_SUCCESS;
59 AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
61 AFSNonPagedFcb *pNPFcb = NULL;
62 IO_STATUS_BLOCK stIoSb = {0,0};
63 BOOLEAN bUninitFileLock = FALSE;
64 USHORT usFcbLength = 0;
65 ULONGLONG ullIndex = 0;
66 AFSDirEnumEntry *pDirEnumCB = NULL;
67 AFSObjectInfoCB *pObjectInfo = NULL, *pParentObjectInfo = NULL;
68 AFSVolumeCB *pVolumeCB = NULL;
73 pObjectInfo = DirEntry->ObjectInformation;
75 pParentObjectInfo = pObjectInfo->ParentObjectInformation;
77 pVolumeCB = pObjectInfo->VolumeCB;
80 // Allocate the Fcb and the nonpaged portion of the Fcb.
83 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
84 AFS_TRACE_LEVEL_VERBOSE_2,
85 "AFSInitFcb Initializing fcb for %wZ FID %08lX-%08lX-%08lX-%08lX\n",
86 &DirEntry->NameInformation.FileName,
87 pObjectInfo->FileId.Cell,
88 pObjectInfo->FileId.Volume,
89 pObjectInfo->FileId.Vnode,
90 pObjectInfo->FileId.Unique);
92 usFcbLength = sizeof( AFSFcb);
94 pFcb = (AFSFcb *)AFSExAllocatePoolWithTag( PagedPool,
96 AFS_FCB_ALLOCATION_TAG);
101 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
102 AFS_TRACE_LEVEL_ERROR,
103 "AFSInitFcb Failed to allocate fcb\n");
105 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
111 pFcb->Header.NodeByteSize = usFcbLength;
113 pNPFcb = (AFSNonPagedFcb *)AFSExAllocatePoolWithTag( NonPagedPool,
114 sizeof( AFSNonPagedFcb),
115 AFS_FCB_NP_ALLOCATION_TAG);
120 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
121 AFS_TRACE_LEVEL_ERROR,
122 "AFSInitFcb Failed to allocate non-paged fcb\n");
124 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
127 RtlZeroMemory( pNPFcb,
128 sizeof( AFSNonPagedFcb));
130 pNPFcb->Size = sizeof( AFSNonPagedFcb);
131 pNPFcb->Type = AFS_NON_PAGED_FCB;
134 // Initialize the advanced header
137 ExInitializeFastMutex( &pNPFcb->AdvancedHdrMutex);
139 FsRtlSetupAdvancedHeader( &pFcb->Header, &pNPFcb->AdvancedHdrMutex);
142 // OK, initialize the entry
145 ExInitializeResourceLite( &pNPFcb->Resource);
147 ExInitializeResourceLite( &pNPFcb->PagingResource);
149 ExInitializeResourceLite( &pNPFcb->CcbListLock);
151 pFcb->Header.Resource = &pNPFcb->Resource;
153 pFcb->Header.PagingIoResource = &pNPFcb->PagingResource;
156 // Grab the Fcb for processing
159 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
160 AFS_TRACE_LEVEL_VERBOSE,
161 "AFSInitFcb Acquiring Fcb lock %08lX EXCL %08lX\n",
163 PsGetCurrentThread());
165 AFSAcquireExcl( &pNPFcb->Resource,
168 pFcb->NPFcb = pNPFcb;
171 // Initialize some fields in the Fcb
174 pFcb->ObjectInformation = pObjectInfo;
176 pObjectInfo->Fcb = pFcb;
179 // Set type specific information
182 if( pObjectInfo->FileType == AFS_FILE_TYPE_DIRECTORY)
186 // Reset the type to a directory type
189 pFcb->Header.NodeTypeCode = AFS_DIRECTORY_FCB;
192 // Initialize enumeration information
195 KeInitializeEvent( &pFcb->NPFcb->Specific.Directory.DirectoryEnumEvent,
199 else if( pObjectInfo->FileType == AFS_FILE_TYPE_FILE)
202 pFcb->Header.NodeTypeCode = AFS_FILE_FCB;
205 // Initialize the file specific information
208 FsRtlInitializeFileLock( &pFcb->Specific.File.FileLock,
212 bUninitFileLock = TRUE;
215 // Initialize the header file sizes to our dir entry information
218 pFcb->Header.AllocationSize.QuadPart = pObjectInfo->AllocationSize.QuadPart;
219 pFcb->Header.FileSize.QuadPart = pObjectInfo->EndOfFile.QuadPart;
220 pFcb->Header.ValidDataLength.QuadPart = pObjectInfo->EndOfFile.QuadPart;
223 // Initialize the Extents resources and so forth. The
224 // quiescent state is that no one has the extents for
225 // IO (do the extents are not busy) and there is no
226 // extents request outstanding (and hence the "last
227 // one" is complete).
229 ExInitializeResourceLite( &pNPFcb->Specific.File.ExtentsResource );
231 KeInitializeEvent( &pNPFcb->Specific.File.ExtentsRequestComplete,
235 for (ULONG i = 0; i < AFS_NUM_EXTENT_LISTS; i++)
237 InitializeListHead(&pFcb->Specific.File.ExtentsLists[i]);
240 pNPFcb->Specific.File.DirtyListHead = NULL;
241 pNPFcb->Specific.File.DirtyListTail = NULL;
243 ExInitializeResourceLite( &pNPFcb->Specific.File.DirtyExtentsListLock);
245 KeInitializeEvent( &pNPFcb->Specific.File.FlushEvent,
246 SynchronizationEvent,
249 KeInitializeEvent( &pNPFcb->Specific.File.QueuedFlushEvent,
253 else if( pObjectInfo->FileType == AFS_FILE_TYPE_SPECIAL_SHARE_NAME)
256 pFcb->Header.NodeTypeCode = AFS_SPECIAL_SHARE_FCB;
258 else if( pObjectInfo->FileType == AFS_FILE_TYPE_PIOCTL)
261 pFcb->Header.NodeTypeCode = AFS_IOCTL_FCB;
263 else if( pObjectInfo->FileType == AFS_FILE_TYPE_SYMLINK)
266 pFcb->Header.NodeTypeCode = AFS_SYMBOLIC_LINK_FCB;
268 else if( pObjectInfo->FileType == AFS_FILE_TYPE_MOUNTPOINT)
271 pFcb->Header.NodeTypeCode = AFS_MOUNT_POINT_FCB;
273 else if( pObjectInfo->FileType == AFS_FILE_TYPE_DFSLINK)
275 pFcb->Header.NodeTypeCode = AFS_DFS_LINK_FCB;
280 try_return( ntStatus = STATUS_INVALID_PARAMETER);
284 // And return the Fcb
289 AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
290 AFS_TRACE_LEVEL_VERBOSE,
291 "AFSInitFcb Initialized Fcb %08lX Name %wZ\n",
293 &DirEntry->NameInformation.FileName);
297 if( !NT_SUCCESS( ntStatus))
300 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
301 AFS_TRACE_LEVEL_ERROR,
302 "AFSInitFcb Failed to initialize fcb Status %08lX\n",
311 FsRtlUninitializeFileLock( &pFcb->Specific.File.FileLock);
317 AFSReleaseResource( &pNPFcb->Resource);
319 ExDeleteResourceLite( &pNPFcb->PagingResource);
321 ExDeleteResourceLite( &pNPFcb->CcbListLock);
323 ExDeleteResourceLite( &pNPFcb->Resource);
326 AFSExFreePool( pFcb);
332 AFSExFreePool( pNPFcb);
347 AFSInitVolume( IN GUID *AuthGroup,
348 IN AFSFileID *RootFid,
349 OUT AFSVolumeCB **VolumeCB)
352 NTSTATUS ntStatus = STATUS_SUCCESS;
353 IO_STATUS_BLOCK stIoStatus = {0,0};
354 AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
355 AFSNonPagedVolumeCB *pNonPagedVcb = NULL;
356 AFSVolumeCB *pVolumeCB = NULL;
357 AFSNonPagedObjectInfoCB *pNonPagedObject = NULL;
358 ULONGLONG ullIndex = 0;
359 BOOLEAN bReleaseLocks = FALSE;
360 AFSVolumeInfoCB stVolumeInformation;
361 AFSNonPagedDirectoryCB *pNonPagedDirEntry = NULL;
367 // Before grabbing any locks ask the service for the volume information
368 // This may be a waste but we need to get this information prior to
369 // taking any volume tree locks. Don't do this for any 'reserved' cell entries
372 if( RootFid->Cell != 0)
375 RtlZeroMemory( &stVolumeInformation,
376 sizeof( AFSVolumeInfoCB));
378 ntStatus = AFSRetrieveVolumeInformation( AuthGroup,
380 &stVolumeInformation);
382 if( !NT_SUCCESS( ntStatus))
385 AFSDbgLogMsg( AFS_SUBSYSTEM_LOAD_LIBRARY | AFS_SUBSYSTEM_INIT_PROCESSING,
386 AFS_TRACE_LEVEL_ERROR,
387 "AFSInitVolume AFSRetrieveVolumeInformation(RootFid) failure %08lX\n",
390 try_return( ntStatus);
394 // Grab our tree locks and see if we raced with someone else
397 AFSAcquireExcl( pDeviceExt->Specific.RDR.VolumeTree.TreeLock,
400 AFSAcquireExcl( &pDeviceExt->Specific.RDR.VolumeListLock,
403 bReleaseLocks = TRUE;
405 ullIndex = AFSCreateHighIndex( RootFid);
407 ntStatus = AFSLocateHashEntry( pDeviceExt->Specific.RDR.VolumeTree.TreeHead,
409 (AFSBTreeEntry **)&pVolumeCB);
411 if( NT_SUCCESS( ntStatus) &&
416 // So we don't lock with an invalidation call ...
419 InterlockedIncrement( &pVolumeCB->VolumeReferenceCount);
421 AFSReleaseResource( pDeviceExt->Specific.RDR.VolumeTree.TreeLock);
423 AFSReleaseResource( &pDeviceExt->Specific.RDR.VolumeListLock);
425 bReleaseLocks = FALSE;
427 AFSAcquireExcl( pVolumeCB->VolumeLock,
430 InterlockedDecrement( &pVolumeCB->VolumeReferenceCount);
432 *VolumeCB = pVolumeCB;
434 try_return( ntStatus);
438 // Revert our status from the above call back to success.
441 ntStatus = STATUS_SUCCESS;
445 // For the global root we allocate out volume node and insert it
446 // into the volume tree ...
449 pVolumeCB = (AFSVolumeCB *)AFSExAllocatePoolWithTag( NonPagedPool,
450 sizeof( AFSVolumeCB),
451 AFS_VCB_ALLOCATION_TAG);
453 if( pVolumeCB == NULL)
456 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
457 AFS_TRACE_LEVEL_ERROR,
458 "AFSInitVolume Failed to allocate the root volume cb\n");
460 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
463 RtlZeroMemory( pVolumeCB,
464 sizeof( AFSVolumeCB));
467 // The non paged portion
470 pNonPagedVcb = (AFSNonPagedVolumeCB *)AFSExAllocatePoolWithTag( NonPagedPool,
471 sizeof( AFSNonPagedVolumeCB),
472 AFS_VCB_ALLOCATION_TAG);
474 if( pNonPagedVcb == NULL)
477 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
478 AFS_TRACE_LEVEL_ERROR,
479 "AFSInitVolume Failed to allocate the root non paged volume cb\n");
481 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
484 RtlZeroMemory( pNonPagedVcb,
485 sizeof( AFSNonPagedVolumeCB));
487 ExInitializeResourceLite( &pNonPagedVcb->VolumeLock);
489 ExInitializeResourceLite( &pNonPagedVcb->ObjectInfoTreeLock);
491 pNonPagedObject = (AFSNonPagedObjectInfoCB *)AFSExAllocatePoolWithTag( NonPagedPool,
492 sizeof( AFSNonPagedObjectInfoCB),
493 AFS_VCB_ALLOCATION_TAG);
495 if( pNonPagedObject == NULL)
498 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
499 AFS_TRACE_LEVEL_ERROR,
500 "AFSInitVolume Failed to allocate the root non paged object cb\n");
502 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
505 RtlZeroMemory( pNonPagedObject,
506 sizeof( AFSNonPagedObjectInfoCB));
508 ExInitializeResourceLite( &pNonPagedObject->DirectoryNodeHdrLock);
510 pVolumeCB->NonPagedVcb = pNonPagedVcb;
512 pVolumeCB->ObjectInformation.NonPagedInfo = pNonPagedObject;
514 pVolumeCB->VolumeLock = &pNonPagedVcb->VolumeLock;
516 pVolumeCB->ObjectInformation.Specific.Directory.DirectoryNodeHdr.TreeLock = &pNonPagedObject->DirectoryNodeHdrLock;
518 pVolumeCB->ObjectInfoTree.TreeLock = &pNonPagedVcb->ObjectInfoTreeLock;
521 // Bias our reference by 1
524 AFSDbgLogMsg( AFS_SUBSYSTEM_VOLUME_REF_COUNTING,
525 AFS_TRACE_LEVEL_VERBOSE,
526 "AFSInitVolume Initializing count (1) on volume %08lX\n",
529 pVolumeCB->VolumeReferenceCount = 1;
531 AFSAcquireExcl( pVolumeCB->VolumeLock,
534 pVolumeCB->DirectoryCB = (AFSDirectoryCB *)AFSExAllocatePoolWithTag( PagedPool,
535 sizeof( AFSDirectoryCB) + sizeof( WCHAR),
538 if( pVolumeCB->DirectoryCB == NULL)
541 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
544 pNonPagedDirEntry = (AFSNonPagedDirectoryCB *)AFSExAllocatePoolWithTag( NonPagedPool,
545 sizeof( AFSNonPagedDirectoryCB),
546 AFS_DIR_ENTRY_NP_TAG);
548 if( pNonPagedDirEntry == NULL)
551 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
554 RtlZeroMemory( pVolumeCB->DirectoryCB,
555 sizeof( AFSDirectoryCB) + sizeof( WCHAR));
557 RtlZeroMemory( pNonPagedDirEntry,
558 sizeof( AFSNonPagedDirectoryCB));
560 ExInitializeResourceLite( &pNonPagedDirEntry->Lock);
562 pVolumeCB->DirectoryCB->NonPaged = pNonPagedDirEntry;
565 // Initialize the non-paged portion of the directory entry
568 KeQuerySystemTime( &pVolumeCB->ObjectInformation.CreationTime);
569 KeQuerySystemTime( &pVolumeCB->ObjectInformation.LastWriteTime);
570 KeQuerySystemTime( &pVolumeCB->ObjectInformation.LastAccessTime);
572 pVolumeCB->ObjectInformation.FileType = AFS_FILE_TYPE_DIRECTORY;
574 SetFlag( pVolumeCB->ObjectInformation.Flags, AFS_OBJECT_ROOT_VOLUME);
576 pVolumeCB->ObjectInformation.FileId.Cell = RootFid->Cell;
577 pVolumeCB->ObjectInformation.FileId.Volume = RootFid->Volume;
578 pVolumeCB->ObjectInformation.FileId.Vnode = RootFid->Vnode;
579 pVolumeCB->ObjectInformation.FileId.Unique = RootFid->Unique;
580 pVolumeCB->ObjectInformation.FileId.Hash = RootFid->Hash;
582 pVolumeCB->ObjectInformation.FileAttributes = FILE_ATTRIBUTE_DIRECTORY;
584 pVolumeCB->DirectoryCB->NameInformation.FileName.Length = sizeof( WCHAR);
586 pVolumeCB->DirectoryCB->NameInformation.FileName.MaximumLength = pVolumeCB->DirectoryCB->NameInformation.FileName.Length;
588 pVolumeCB->DirectoryCB->NameInformation.FileName.Buffer = (WCHAR *)((char *)pVolumeCB->DirectoryCB + sizeof( AFSDirectoryCB));
590 RtlCopyMemory( pVolumeCB->DirectoryCB->NameInformation.FileName.Buffer,
595 // Copy in the volume information retrieved above
598 RtlCopyMemory( &pVolumeCB->VolumeInformation,
599 &stVolumeInformation,
600 sizeof( AFSVolumeInfoCB));
606 pVolumeCB->DirectoryCB->ObjectInformation = &pVolumeCB->ObjectInformation;
608 pVolumeCB->DirectoryCB->ObjectInformation->VolumeCB = pVolumeCB;
611 // Insert the volume into our volume tree. Don't insert any reserved entries
614 if( RootFid->Cell != 0)
617 pVolumeCB->TreeEntry.HashIndex = ullIndex;
619 if( pDeviceExt->Specific.RDR.VolumeTree.TreeHead == NULL)
622 pDeviceExt->Specific.RDR.VolumeTree.TreeHead = &pVolumeCB->TreeEntry;
627 AFSInsertHashEntry( pDeviceExt->Specific.RDR.VolumeTree.TreeHead,
628 &pVolumeCB->TreeEntry);
631 SetFlag( pVolumeCB->Flags, AFS_VOLUME_INSERTED_HASH_TREE);
633 if( pDeviceExt->Specific.RDR.VolumeListHead == NULL)
636 pDeviceExt->Specific.RDR.VolumeListHead = pVolumeCB;
641 pDeviceExt->Specific.RDR.VolumeListTail->ListEntry.fLink = (void *)pVolumeCB;
643 pVolumeCB->ListEntry.bLink = pDeviceExt->Specific.RDR.VolumeListTail;
646 pDeviceExt->Specific.RDR.VolumeListTail = pVolumeCB;
649 *VolumeCB = pVolumeCB;
653 if( !NT_SUCCESS( ntStatus))
656 if( pNonPagedVcb != NULL)
659 AFSReleaseResource( pVolumeCB->VolumeLock);
661 ExDeleteResourceLite( &pNonPagedVcb->VolumeLock);
663 ExDeleteResourceLite( &pNonPagedVcb->ObjectInfoTreeLock);
665 AFSExFreePool( pNonPagedVcb);
668 if( pNonPagedObject != NULL)
671 ExDeleteResourceLite( &pNonPagedObject->DirectoryNodeHdrLock);
673 AFSExFreePool( pNonPagedObject);
676 if( pVolumeCB != NULL)
679 if( pVolumeCB->DirectoryCB != NULL)
682 AFSExFreePool( pVolumeCB->DirectoryCB);
685 AFSExFreePool( pVolumeCB);
688 if( pNonPagedDirEntry != NULL)
691 ExDeleteResourceLite( &pNonPagedDirEntry->Lock);
693 AFSExFreePool( pNonPagedDirEntry);
700 AFSReleaseResource( pDeviceExt->Specific.RDR.VolumeTree.TreeLock);
702 AFSReleaseResource( &pDeviceExt->Specific.RDR.VolumeListLock);
710 AFSRemoveVolume( IN AFSVolumeCB *VolumeCB)
713 NTSTATUS ntStatus = STATUS_SUCCESS;
714 AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
720 // Remove the volume from the tree and list
721 // Don't process the list information for reserved entries
724 if( VolumeCB->ObjectInformation.FileId.Cell != 0)
727 if( BooleanFlagOn( VolumeCB->Flags, AFS_VOLUME_INSERTED_HASH_TREE))
730 AFSRemoveHashEntry( &pDeviceExt->Specific.RDR.VolumeTree.TreeHead,
731 &VolumeCB->TreeEntry);
734 if( VolumeCB->ListEntry.fLink == NULL)
737 pDeviceExt->Specific.RDR.VolumeListTail = (AFSVolumeCB *)VolumeCB->ListEntry.bLink;
739 if( pDeviceExt->Specific.RDR.VolumeListTail != NULL)
742 pDeviceExt->Specific.RDR.VolumeListTail->ListEntry.fLink = NULL;
748 ((AFSVolumeCB *)(VolumeCB->ListEntry.fLink))->ListEntry.bLink = VolumeCB->ListEntry.bLink;
751 if( VolumeCB->ListEntry.bLink == NULL)
754 pDeviceExt->Specific.RDR.VolumeListHead = (AFSVolumeCB *)VolumeCB->ListEntry.fLink;
756 if( pDeviceExt->Specific.RDR.VolumeListHead != NULL)
759 pDeviceExt->Specific.RDR.VolumeListHead->ListEntry.bLink = NULL;
765 ((AFSVolumeCB *)(VolumeCB->ListEntry.bLink))->ListEntry.fLink = VolumeCB->ListEntry.fLink;
770 // Remove any PIOctl objects we have
773 if( VolumeCB->ObjectInformation.Specific.Directory.PIOCtlDirectoryCB != NULL)
776 if( VolumeCB->ObjectInformation.Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb != NULL)
779 AFSRemoveFcb( VolumeCB->ObjectInformation.Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
782 AFSDeleteObjectInfo( VolumeCB->ObjectInformation.Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
784 AFSExFreePool( VolumeCB->ObjectInformation.Specific.Directory.PIOCtlDirectoryCB);
787 if( BooleanFlagOn( VolumeCB->ObjectInformation.Flags, AFS_OBJECT_HELD_IN_SERVICE))
791 // Release the fid in the service
794 AFSReleaseFid( &VolumeCB->ObjectInformation.FileId);
798 // Free up the memory
801 if( VolumeCB->NonPagedVcb != NULL)
804 if( ExIsResourceAcquiredLite( VolumeCB->VolumeLock))
807 AFSReleaseResource( VolumeCB->VolumeLock);
810 ExDeleteResourceLite( &VolumeCB->NonPagedVcb->VolumeLock);
812 ExDeleteResourceLite( &VolumeCB->NonPagedVcb->ObjectInfoTreeLock);
814 AFSExFreePool( VolumeCB->NonPagedVcb);
817 if( VolumeCB->ObjectInformation.NonPagedInfo != NULL)
820 ExDeleteResourceLite( &VolumeCB->ObjectInformation.NonPagedInfo->DirectoryNodeHdrLock);
822 AFSExFreePool( VolumeCB->ObjectInformation.NonPagedInfo);
825 if( VolumeCB->DirectoryCB != NULL)
828 if( VolumeCB->DirectoryCB->NonPaged != NULL)
831 ExDeleteResourceLite( &VolumeCB->DirectoryCB->NonPaged->Lock);
833 AFSExFreePool( VolumeCB->DirectoryCB->NonPaged);
836 AFSExFreePool( VolumeCB->DirectoryCB);
839 AFSExFreePool( VolumeCB);
847 // Function: AFSInitRootFcb
851 // This function performs Root node Fcb initialization
855 // A status is returned for the function
859 AFSInitRootFcb( IN ULONGLONG ProcessID,
860 IN AFSVolumeCB *VolumeCB)
863 NTSTATUS ntStatus = STATUS_SUCCESS;
865 AFSNonPagedFcb *pNPFcb = NULL;
866 IO_STATUS_BLOCK stIoStatus = {0,0};
867 AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
873 // Initialize the root fcb
876 pFcb = (AFSFcb *)AFSExAllocatePoolWithTag( PagedPool,
878 AFS_FCB_ALLOCATION_TAG);
883 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
884 AFS_TRACE_LEVEL_ERROR,
885 "AFSInitRootFcb Failed to allocate the root fcb\n");
887 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
893 pFcb->Header.NodeByteSize = sizeof( AFSFcb);
894 pFcb->Header.NodeTypeCode = AFS_ROOT_FCB;
896 pNPFcb = (AFSNonPagedFcb *)AFSExAllocatePoolWithTag( NonPagedPool,
897 sizeof( AFSNonPagedFcb),
898 AFS_FCB_NP_ALLOCATION_TAG);
903 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
904 AFS_TRACE_LEVEL_ERROR,
905 "AFSInitRootFcb Failed to allocate the non-paged fcb\n");
907 try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
910 RtlZeroMemory( pNPFcb,
911 sizeof( AFSNonPagedFcb));
913 pNPFcb->Size = sizeof( AFSNonPagedFcb);
914 pNPFcb->Type = AFS_NON_PAGED_FCB;
917 // OK, initialize the entry
920 ExInitializeFastMutex( &pNPFcb->AdvancedHdrMutex);
922 FsRtlSetupAdvancedHeader( &pFcb->Header, &pNPFcb->AdvancedHdrMutex);
924 ExInitializeResourceLite( &pNPFcb->Resource);
926 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
927 AFS_TRACE_LEVEL_VERBOSE,
928 "AFSInitRootFcb Acquiring Fcb lock %08lX EXCL %08lX\n",
930 PsGetCurrentThread());
932 AFSAcquireExcl( &pNPFcb->Resource,
935 ExInitializeResourceLite( &pNPFcb->PagingResource);
937 ExInitializeResourceLite( &pNPFcb->CcbListLock);
939 pFcb->Header.Resource = &pNPFcb->Resource;
941 pFcb->Header.PagingIoResource = &pNPFcb->PagingResource;
943 pFcb->NPFcb = pNPFcb;
946 // Initialize enumeration information
949 KeInitializeEvent( &pFcb->NPFcb->Specific.Directory.DirectoryEnumEvent,
954 // Save the root Fcb in the VolumeCB
957 VolumeCB->ObjectInformation.Fcb = pFcb;
959 VolumeCB->ObjectInformation.VolumeCB = VolumeCB;
961 VolumeCB->RootFcb = pFcb;
963 pFcb->ObjectInformation = &VolumeCB->ObjectInformation;
967 if( !NT_SUCCESS( ntStatus))
973 AFSRemoveRootFcb( pFcb);
982 // Function: AFSRemoveRootFcb
986 // This function performs root Fcb removal/deallocation
990 // A status is returned for the function
994 AFSRemoveRootFcb( IN AFSFcb *RootFcb)
997 AFSDirectoryCB *pCurrentDirEntry = NULL;
998 AFSVolumeCB *pVolumeCB = RootFcb->ObjectInformation->VolumeCB;
1000 if( RootFcb->NPFcb != NULL)
1007 ExDeleteResourceLite( &RootFcb->NPFcb->Resource);
1009 ExDeleteResourceLite( &RootFcb->NPFcb->PagingResource);
1011 ExDeleteResourceLite( &RootFcb->NPFcb->CcbListLock);
1014 // The non paged region
1017 AFSExFreePool( RootFcb->NPFcb);
1021 // And the Fcb itself
1024 AFSExFreePool( RootFcb);
1030 // Function: AFSRemoveFcb
1034 // This function performs Fcb removal/deallocation
1038 // A status is returned for the function
1042 AFSRemoveFcb( IN AFSFcb *Fcb)
1046 // Uninitialize the file lock if it is a file
1049 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1050 AFS_TRACE_LEVEL_VERBOSE,
1051 "AFSRemoveFcb Removing Fcb %08lX\n",
1054 if( Fcb->Header.NodeTypeCode == AFS_FILE_FCB)
1057 FsRtlUninitializeFileLock( &Fcb->Specific.File.FileLock);
1060 // The resource we allocated
1063 ExDeleteResourceLite( &Fcb->NPFcb->Specific.File.ExtentsResource );
1065 ExDeleteResourceLite( &Fcb->NPFcb->Specific.File.DirtyExtentsListLock);
1068 else if( Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1075 // Tear down the FM specific contexts
1078 FsRtlTeardownPerStreamContexts( &Fcb->Header);
1081 // Delete the resources
1084 ExDeleteResourceLite( &Fcb->NPFcb->Resource);
1086 ExDeleteResourceLite( &Fcb->NPFcb->PagingResource);
1088 ExDeleteResourceLite( &Fcb->NPFcb->CcbListLock);
1091 // The non paged region
1094 AFSExFreePool( Fcb->NPFcb);
1097 // And the Fcb itself, which includes the name
1100 AFSExFreePool( Fcb);
1106 AFSInitCcb( IN OUT AFSCcb **Ccb)
1109 NTSTATUS Status = STATUS_SUCCESS;
1110 AFSCcb *pCcb = NULL;
1116 // Allocate our context control block
1119 pCcb = (AFSCcb *)AFSExAllocatePoolWithTag( PagedPool,
1121 AFS_CCB_ALLOCATION_TAG);
1126 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1127 AFS_TRACE_LEVEL_ERROR,
1128 "AFSInitCcb Failed to allocate Ccb\n");
1130 try_return( Status = STATUS_INSUFFICIENT_RESOURCES);
1133 RtlZeroMemory( pCcb,
1136 pCcb->Size = sizeof( AFSCcb);
1137 pCcb->Type = AFS_CCB;
1147 if( !NT_SUCCESS( Status))
1153 AFSExFreePool( pCcb);
1164 // Function: AFSRemoveCcb
1168 // This function performs Ccb removal/deallocation
1172 // A status is returned for the function
1176 AFSRemoveCcb( IN AFSFcb *Fcb,
1180 NTSTATUS ntStatus = STATUS_SUCCESS;
1183 BooleanFlagOn( Ccb->Flags, CCB_FLAG_INSERTED_CCB_LIST))
1186 AFSAcquireExcl( &Fcb->NPFcb->CcbListLock,
1189 if( Ccb->ListEntry.fLink == NULL)
1192 Fcb->CcbListTail = (AFSCcb *)Ccb->ListEntry.bLink;
1194 if( Fcb->CcbListTail != NULL)
1196 Fcb->CcbListTail->ListEntry.fLink = NULL;
1201 ((AFSCcb *)(Ccb->ListEntry.fLink))->ListEntry.bLink = Ccb->ListEntry.bLink;
1204 if( Ccb->ListEntry.bLink == NULL)
1207 Fcb->CcbListHead = (AFSCcb *)Ccb->ListEntry.fLink;
1209 if( Fcb->CcbListHead != NULL)
1211 Fcb->CcbListHead->ListEntry.bLink = NULL;
1216 ((AFSCcb *)(Ccb->ListEntry.bLink))->ListEntry.fLink = Ccb->ListEntry.fLink;
1219 AFSReleaseResource( &Fcb->NPFcb->CcbListLock);
1222 if( Ccb->MaskName.Buffer != NULL)
1225 AFSExFreePool( Ccb->MaskName.Buffer);
1228 if( BooleanFlagOn( Ccb->Flags, CCB_FLAG_FREE_FULL_PATHNAME))
1231 AFSExFreePool( Ccb->FullFileName.Buffer);
1235 // If we have a name array then delete it
1238 if( Ccb->NameArray != NULL)
1241 AFSFreeNameArray( Ccb->NameArray);
1243 Ccb->NameArray = NULL;
1246 if( Ccb->DirectorySnapshot != NULL)
1249 AFSExFreePool( Ccb->DirectorySnapshot);
1251 Ccb->DirectorySnapshot = NULL;
1254 if( Ccb->NotifyMask.Buffer != NULL)
1257 AFSExFreePool( Ccb->NotifyMask.Buffer);
1264 AFSExFreePool( Ccb);
1270 AFSInsertCcb( IN AFSFcb *Fcb,
1274 NTSTATUS ntStatus = STATUS_SUCCESS;
1276 AFSAcquireExcl( &Fcb->NPFcb->CcbListLock,
1279 if( Fcb->CcbListHead == NULL)
1281 Fcb->CcbListHead = Ccb;
1285 Fcb->CcbListTail->ListEntry.fLink = (void *)Ccb;
1287 Ccb->ListEntry.bLink = (void *)Fcb->CcbListTail;
1290 Fcb->CcbListTail = Ccb;
1292 SetFlag( Ccb->Flags, CCB_FLAG_INSERTED_CCB_LIST);
1294 AFSReleaseResource( &Fcb->NPFcb->CcbListLock);