case FileLinkInformation:
{
- ntStatus = STATUS_INVALID_DEVICE_REQUEST;
+ ntStatus = AFSSetFileLinkInfo( Irp);
break;
}
{
//
+ // Reduce the Link count in the object information block
+ // to correspond with the deletion of the directory entry.
+ //
+
+ pFcb->ObjectInformation->Links--;
+
+ //
// Check if this is a directory that there are not currently other opens
//
}
NTSTATUS
+AFSSetFileLinkInfo( IN PIRP Irp)
+{
+
+ NTSTATUS ntStatus = STATUS_SUCCESS;
+ AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
+ PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
+ IO_STATUS_BLOCK stIoSb = {0,0};
+ PFILE_LINK_INFORMATION pFileLinkInfo = NULL;
+ PFILE_OBJECT pSrcFileObj = NULL;
+ PFILE_OBJECT pTargetFileObj = pIrpSp->Parameters.SetFile.FileObject;
+ AFSFcb *pSrcFcb = NULL, *pTargetDcb = NULL, *pTargetFcb = NULL;
+ AFSCcb *pSrcCcb = NULL, *pTargetDirCcb = NULL;
+ AFSObjectInfoCB *pSrcObject = NULL, *pTargetObject = NULL;
+ AFSObjectInfoCB *pSrcParentObject = NULL, *pTargetParentObject = NULL;
+ UNICODE_STRING uniSourceName, uniTargetName;
+ UNICODE_STRING uniFullTargetName, uniTargetParentName;
+ UNICODE_STRING uniShortName;
+ BOOLEAN bCommonParent = FALSE;
+ AFSDirectoryCB *pTargetDirEntry = NULL;
+ AFSDirectoryCB *pNewTargetDirEntry = NULL;
+ ULONG ulTargetCRC;
+ BOOLEAN bTargetEntryExists = FALSE;
+ LONG lCount;
+ BOOLEAN bReleaseTargetDirLock = FALSE;
+ AFSFileID stNewFid;
+ ULONG ulNotificationAction = 0, ulNotifyFilter = 0;
+
+ __Enter
+ {
+
+ pSrcFileObj = pIrpSp->FileObject;
+
+ pSrcFcb = (AFSFcb *)pSrcFileObj->FsContext;
+ pSrcCcb = (AFSCcb *)pSrcFileObj->FsContext2;
+
+ pSrcObject = pSrcFcb->ObjectInformation;
+ pSrcParentObject = pSrcFcb->ObjectInformation->ParentObjectInformation;
+
+ pFileLinkInfo = (PFILE_LINK_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
+
+ //
+ // Perform some basic checks to ensure FS integrity
+ //
+
+ if( pSrcFcb->Header.NodeTypeCode != AFS_FILE_FCB)
+ {
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Attempt to non-file (INVALID_PARAMETER)\n");
+
+ try_return( ntStatus = STATUS_INVALID_PARAMETER);
+ }
+
+ if( pTargetFileObj == NULL)
+ {
+
+ if ( pFileLinkInfo->RootDirectory)
+ {
+
+ //
+ // The target directory is provided by HANDLE
+ // RootDirectory is only set when the target directory is not the same
+ // as the source directory.
+ //
+ // AFS only supports hard links within a single directory.
+ //
+ // The IOManager should translate any Handle to a FileObject for us.
+ // However, the failure to receive a FileObject is treated as a fatal
+ // error.
+ //
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Attempt to link %wZ to alternate directory by handle INVALID_PARAMETER\n",
+ &pSrcCcb->DirectoryCB->NameInformation.FileName);
+
+ try_return( ntStatus = STATUS_INVALID_PARAMETER);
+ }
+ else
+ {
+
+ uniFullTargetName.Length = (USHORT)pFileLinkInfo->FileNameLength;
+
+ uniFullTargetName.Buffer = (PWSTR)&pFileLinkInfo->FileName;
+
+ AFSRetrieveFinalComponent( &uniFullTargetName,
+ &uniTargetName);
+
+ AFSRetrieveParentPath( &uniFullTargetName,
+ &uniTargetParentName);
+
+ if ( uniTargetParentName.Length == 0)
+ {
+
+ //
+ // This is a simple rename. Here the target directory is the same as the source parent directory
+ // and the name is retrieved from the system buffer information
+ //
+
+ pTargetParentObject = pSrcParentObject;
+ }
+ else
+ {
+ //
+ // uniTargetParentName contains the directory the renamed object
+ // will be moved to. Must obtain the TargetParentObject.
+ //
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Attempt to link %wZ to alternate directory %wZ (NOT_SAME_DEVICE)\n",
+ &pSrcCcb->DirectoryCB->NameInformation.FileName,
+ &uniFullTargetName);
+
+ try_return( ntStatus = STATUS_NOT_SAME_DEVICE);
+ }
+ }
+
+ pTargetDcb = pTargetParentObject->Fcb;
+ }
+ else
+ {
+
+ //
+ // So here we have the target directory taken from the targetfile object
+ //
+
+ pTargetDcb = (AFSFcb *)pTargetFileObj->FsContext;
+
+ pTargetDirCcb = (AFSCcb *)pTargetFileObj->FsContext2;
+
+ pTargetParentObject = (AFSObjectInfoCB *)pTargetDcb->ObjectInformation;
+
+ //
+ // Grab the target name which we setup in the IRP_MJ_CREATE handler. By how we set this up
+ // it is only the target component of the rename operation
+ //
+
+ uniTargetName = *((PUNICODE_STRING)&pTargetFileObj->FileName);
+ }
+
+ //
+ // The quick check to see if they are self linking.
+ // Do the names match? Only do this where the parent directories are
+ // the same
+ //
+
+ if( pTargetParentObject == pSrcParentObject)
+ {
+
+ if( FsRtlAreNamesEqual( &uniTargetName,
+ &uniSourceName,
+ FALSE,
+ NULL))
+ {
+ try_return( ntStatus = STATUS_SUCCESS);
+ }
+
+ bCommonParent = TRUE;
+ }
+ else
+ {
+
+ //
+ // We do not allow cross-volume hard links
+ //
+
+ if( pTargetParentObject->VolumeCB != pSrcObject->VolumeCB)
+ {
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Attempt to link to different volume %wZ\n",
+ &pSrcCcb->DirectoryCB->NameInformation.FileName);
+
+ try_return( ntStatus = STATUS_NOT_SAME_DEVICE);
+ }
+ }
+
+ ulTargetCRC = AFSGenerateCRC( &uniTargetName,
+ FALSE);
+
+ AFSAcquireExcl( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
+ TRUE);
+
+ bReleaseTargetDirLock = TRUE;
+
+ AFSLocateCaseSensitiveDirEntry( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
+ ulTargetCRC,
+ &pTargetDirEntry);
+
+ if( pTargetDirEntry == NULL)
+ {
+
+ //
+ // Missed so perform a case insensitive lookup
+ //
+
+ ulTargetCRC = AFSGenerateCRC( &uniTargetName,
+ TRUE);
+
+ AFSLocateCaseInsensitiveDirEntry( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
+ ulTargetCRC,
+ &pTargetDirEntry);
+ }
+
+ if ( !BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_DISABLE_SHORTNAMES) &&
+ pTargetDirEntry == NULL && RtlIsNameLegalDOS8Dot3( &uniTargetName,
+ NULL,
+ NULL))
+ {
+ //
+ // Try the short name
+ //
+ AFSLocateShortNameDirEntry( pTargetParentObject->Specific.Directory.ShortNameTree,
+ ulTargetCRC,
+ &pTargetDirEntry);
+ }
+
+ //
+ // Increment our ref count on the dir entry
+ //
+
+ if( pTargetDirEntry != NULL)
+ {
+
+ ASSERT( pTargetParentObject == pTargetDirEntry->ObjectInformation->ParentObjectInformation);
+
+ lCount = InterlockedIncrement( &pTargetDirEntry->OpenReferenceCount);
+
+ if( !pFileLinkInfo->ReplaceIfExists)
+ {
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Attempt to link with target collision %wZ Target %wZ\n",
+ &pSrcCcb->DirectoryCB->NameInformation.FileName,
+ &pTargetDirEntry->NameInformation.FileName);
+
+ try_return( ntStatus = STATUS_OBJECT_NAME_COLLISION);
+ }
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Target %wZ exists DE %p Count %08lX, performing delete of target\n",
+ &pTargetDirEntry->NameInformation.FileName,
+ pTargetDirEntry,
+ pTargetDirEntry->OpenReferenceCount);
+
+ //
+ // Pull the directory entry from the parent
+ //
+
+ AFSRemoveDirNodeFromParent( pTargetParentObject,
+ pTargetDirEntry,
+ FALSE);
+
+ bTargetEntryExists = TRUE;
+ }
+ else
+ {
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_VERBOSE,
+ "AFSSetFileLinkInfo Target does NOT exist, normal linking\n");
+ }
+
+ //
+ // OK, this is a simple rename. Issue the rename
+ // request to the service.
+ //
+
+ ntStatus = AFSNotifyHardLink( pSrcFcb->ObjectInformation,
+ &pSrcCcb->AuthGroup,
+ pSrcFcb->ObjectInformation->ParentObjectInformation,
+ pTargetDcb->ObjectInformation,
+ pSrcCcb->DirectoryCB,
+ &uniTargetName,
+ pFileLinkInfo->ReplaceIfExists,
+ &pNewTargetDirEntry);
+
+ if( !NT_SUCCESS( ntStatus))
+ {
+
+ AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
+ AFS_TRACE_LEVEL_ERROR,
+ "AFSSetFileLinkInfo Failed link of %wZ to target %wZ Status %08lX\n",
+ &pSrcCcb->DirectoryCB->NameInformation.FileName,
+ &uniTargetName,
+ ntStatus);
+
+ try_return( ntStatus);
+ }
+
+ AFSInsertDirectoryNode( pTargetDcb->ObjectInformation,
+ pNewTargetDirEntry,
+ TRUE);
+
+ //
+ // Send notification for the target link file
+ //
+
+ if( bTargetEntryExists || pNewTargetDirEntry)
+ {
+
+ ulNotificationAction = FILE_ACTION_MODIFIED;
+ }
+ else
+ {
+
+ ulNotificationAction = FILE_ACTION_ADDED;
+ }
+
+ AFSFsRtlNotifyFullReportChange( pTargetParentObject->ParentObjectInformation,
+ pSrcCcb,
+ (ULONG)ulNotifyFilter,
+ (ULONG)ulNotificationAction);
+
+ try_exit:
+
+ if( !NT_SUCCESS( ntStatus))
+ {
+
+ if( bTargetEntryExists)
+ {
+
+ AFSInsertDirectoryNode( pTargetDirEntry->ObjectInformation->ParentObjectInformation,
+ pTargetDirEntry,
+ FALSE);
+ }
+ }
+
+ if( pTargetDirEntry != NULL)
+ {
+
+ lCount = InterlockedDecrement( &pTargetDirEntry->OpenReferenceCount);
+ }
+
+ if( bReleaseTargetDirLock)
+ {
+
+ AFSReleaseResource( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
+ }
+ }
+
+ return ntStatus;
+}
+
+NTSTATUS
AFSSetRenameInfo( IN PIRP Irp)
{
}
}
+
//
// Extract off the final component name from the Fcb
//
try_exit:
-
if( !NT_SUCCESS( ntStatus))
{
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