2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Kernel Drivers, LLC.
3 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Your File System, Inc.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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11 * this list of conditions and the following disclaimer.
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15 * - Neither the names of Kernel Drivers, LLC and Your File System, Inc.
16 * nor the names of their contributors may be used to endorse or promote
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18 * permission from Kernel Drivers, LLC and Your File System, Inc.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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34 // File: AFSFSControl.cpp
37 #include "AFSCommon.h"
40 AFSFSControl( IN PDEVICE_OBJECT LibDeviceObject,
44 UNREFERENCED_PARAMETER(LibDeviceObject);
45 NTSTATUS ntStatus = STATUS_SUCCESS;
46 IO_STACK_LOCATION *pIrpSp;
48 pIrpSp = IoGetCurrentIrpStackLocation( Irp);
53 switch( pIrpSp->MinorFunction)
56 case IRP_MN_USER_FS_REQUEST:
58 ntStatus = AFSProcessUserFsRequest( Irp);
62 case IRP_MN_MOUNT_VOLUME:
66 case IRP_MN_VERIFY_VOLUME:
75 AFSCompleteRequest( Irp,
79 __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
84 "EXCEPTION - AFSFSControl\n"));
86 AFSDumpTraceFilesFnc();
93 AFSParseMountPointTarget( IN UNICODE_STRING *Target,
95 OUT UNICODE_STRING *Volume,
96 OUT UNICODE_STRING *Cell)
98 // Targets are of the form <type>[<cell>:]<volume>
100 *Type = Target->Buffer[ 0];
102 // Extract the cell name (if any)
104 Cell->Buffer = &Target->Buffer[ 1];
106 // Search for colon separator or end of counted string
108 for ( Cell->Length = 0; Cell->Length < Target->Length - sizeof( WCHAR); Cell->Length += sizeof( WCHAR))
111 if ( Cell->Buffer[ Cell->Length / sizeof( WCHAR)] == L':')
117 // If a colon is not found, it means there is no cell
119 if ( Cell->Length < Target->Length - sizeof( WCHAR) &&
120 Cell->Buffer[ Cell->Length / sizeof( WCHAR)] == L':')
123 Cell->MaximumLength = Cell->Length;
125 if ( Cell->Length > Target->Length - 2 * sizeof( WCHAR))
127 // Invalid target string if there is no room for
133 Volume->Length = Volume->MaximumLength = (Target->Length - Cell->Length - 2 * sizeof( WCHAR));
135 Volume->Buffer = &Target->Buffer[ Cell->Length / sizeof( WCHAR) + 2];
141 Volume->Length = Volume->MaximumLength = Cell->Length;
143 Volume->Buffer = Cell->Buffer;
145 Cell->Length = Cell->MaximumLength = 0;
154 AFSProcessUserFsRequest( IN PIRP Irp)
157 NTSTATUS ntStatus = STATUS_SUCCESS;
158 ULONG ulFsControlCode;
160 PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp );
162 ULONG ulOutputBufferLen, ulInputBufferLen;
167 ulFsControlCode = pIrpSp->Parameters.FileSystemControl.FsControlCode;
169 pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
171 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
175 pCcb->DirectoryCB == NULL)
178 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
179 AFS_TRACE_LEVEL_VERBOSE_2,
180 "AFSProcessUserFsRequest Invalid Fcb\n"));
182 try_return( ntStatus = STATUS_INVALID_DEVICE_REQUEST);
185 if( pFcb->Header.NodeTypeCode == AFS_SPECIAL_SHARE_FCB)
188 ntStatus = AFSProcessShareFsCtrl( Irp,
192 try_return( ntStatus);
195 ulOutputBufferLen = pIrpSp->Parameters.FileSystemControl.OutputBufferLength;
196 ulInputBufferLen = pIrpSp->Parameters.FileSystemControl.InputBufferLength;
199 // Process the request
202 switch( ulFsControlCode )
205 case FSCTL_REQUEST_OPLOCK_LEVEL_1:
206 case FSCTL_REQUEST_OPLOCK_LEVEL_2:
207 case FSCTL_REQUEST_BATCH_OPLOCK:
208 case FSCTL_OPLOCK_BREAK_ACKNOWLEDGE:
209 case FSCTL_OPBATCH_ACK_CLOSE_PENDING:
210 case FSCTL_OPLOCK_BREAK_NOTIFY:
211 case FSCTL_OPLOCK_BREAK_ACK_NO_2:
212 case FSCTL_REQUEST_FILTER_OPLOCK :
215 // Note that implementing this call will probably need us
216 // to call the server as well as adding code in read and
217 // write and caching. Also that it is unlikely that
218 // anyone will ever call us at this point - RDR doesn't
222 ntStatus = STATUS_NOT_IMPLEMENTED;
227 case FSCTL_LOCK_VOLUME:
229 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
230 AFS_TRACE_LEVEL_VERBOSE_2,
231 "AFSProcessUserFsRequest Processing FSCTL_LOCK_VOLUME request\n"));
233 ntStatus = STATUS_NOT_IMPLEMENTED;
238 case FSCTL_UNLOCK_VOLUME:
240 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
241 AFS_TRACE_LEVEL_VERBOSE_2,
242 "AFSProcessUserFsRequest Processing FSCTL_UNLOCK_VOLUME request\n"));
244 ntStatus = STATUS_NOT_IMPLEMENTED;
249 case FSCTL_DISMOUNT_VOLUME:
251 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
252 AFS_TRACE_LEVEL_VERBOSE_2,
253 "AFSProcessUserFsRequest Processing FSCTL_DISMOUNT_VOLUME request\n"));
255 ntStatus = STATUS_NOT_IMPLEMENTED;
260 case FSCTL_MARK_VOLUME_DIRTY:
262 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
263 AFS_TRACE_LEVEL_VERBOSE_2,
264 "AFSProcessUserFsRequest Processing FSCTL_MARK_VOLUME_DIRTY request\n"));
266 ntStatus = STATUS_NOT_IMPLEMENTED;
271 case FSCTL_IS_VOLUME_DIRTY:
273 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
274 AFS_TRACE_LEVEL_VERBOSE_2,
275 "AFSProcessUserFsRequest Processing FSCTL_IS_VOLUME_DIRTY request\n"));
277 ntStatus = STATUS_NOT_IMPLEMENTED;
282 case FSCTL_IS_VOLUME_MOUNTED:
284 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
285 AFS_TRACE_LEVEL_VERBOSE_2,
286 "AFSProcessUserFsRequest Processing FSCTL_IS_VOLUME_MOUNTED request\n"));
288 ntStatus = STATUS_NOT_IMPLEMENTED;
293 case FSCTL_IS_PATHNAME_VALID:
295 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
296 AFS_TRACE_LEVEL_VERBOSE_2,
297 "AFSProcessUserFsRequest Processing FSCTL_IS_PATHNAME_VALID request\n"));
299 ntStatus = STATUS_SUCCESS;
304 #ifndef FSCTL_CSC_INTERNAL
305 #define FSCTL_CSC_INTERNAL CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 107, METHOD_NEITHER, FILE_ANY_ACCESS)
307 case FSCTL_CSC_INTERNAL:
309 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
310 AFS_TRACE_LEVEL_VERBOSE_2,
311 "AFSProcessUserFsRequest Processing FSCTL_CSC_INTERNAL request\n"));
313 ntStatus = STATUS_INVALID_DEVICE_REQUEST;
318 case FSCTL_GET_REPARSE_POINT:
321 REPARSE_GUID_DATA_BUFFER *pReparseBuffer = (REPARSE_GUID_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
322 REPARSE_DATA_BUFFER *pMSFTReparseBuffer = (REPARSE_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
323 ULONG ulRemainingLen = ulOutputBufferLen;
324 AFSReparseTagInfo *pReparseInfo = NULL;
325 BOOLEAN bRelative = FALSE;
326 BOOLEAN bDriveLetter = FALSE;
327 WCHAR * PathBuffer = NULL;
329 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
330 AFS_TRACE_LEVEL_VERBOSE_2,
331 "AFSProcessUserFsRequest Processing FSCTL_GET_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x\n",
332 &pCcb->DirectoryCB->NameInformation.FileName,
333 pCcb->DirectoryCB->ObjectInformation->FileType,
334 pCcb->DirectoryCB->ObjectInformation->FileAttributes));
337 // Check if we have the reparse entry set on the entry
340 if( !BooleanFlagOn( pCcb->DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
343 ntStatus = STATUS_NOT_A_REPARSE_POINT;
349 switch ( pCcb->DirectoryCB->ObjectInformation->FileType) {
350 case AFS_FILE_TYPE_MOUNTPOINT:
352 if( ulOutputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
355 ntStatus = STATUS_BUFFER_TOO_SMALL;
357 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer);
362 ulRemainingLen -= FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer);
368 if( ulOutputBufferLen < FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
371 ntStatus = STATUS_BUFFER_TOO_SMALL;
373 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer);
378 ulRemainingLen -= FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer);
384 // Populate the data in the reparse buffer
387 pReparseBuffer->ReparseDataLength = 0;
389 AFSAcquireExcl( &pCcb->DirectoryCB->NonPaged->Lock,
392 if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
396 // We'll reset the DV to ensure we validate the metadata content
399 pCcb->DirectoryCB->ObjectInformation->DataVersion.QuadPart = (ULONGLONG)-1;
401 SetFlag( pCcb->DirectoryCB->ObjectInformation->Flags, AFS_OBJECT_FLAGS_VERIFY);
403 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
404 AFS_TRACE_LEVEL_VERBOSE,
405 "AFSProcessUserFsRequest Verifying symlink %wZ FID %08lX-%08lX-%08lX-%08lX\n",
406 &pCcb->DirectoryCB->NameInformation.FileName,
407 pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
408 pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
409 pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
410 pCcb->DirectoryCB->ObjectInformation->FileId.Unique));
412 ntStatus = AFSVerifyEntry( &pCcb->AuthGroup,
415 if( !NT_SUCCESS( ntStatus))
418 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
419 AFS_TRACE_LEVEL_ERROR,
420 "AFSProcessUserFsRequest Failed to verify symlink %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
421 &pCcb->DirectoryCB->NameInformation.FileName,
422 pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
423 pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
424 pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
425 pCcb->DirectoryCB->ObjectInformation->FileId.Unique,
428 AFSReleaseResource( &pCcb->DirectoryCB->NonPaged->Lock);
434 pReparseInfo = (AFSReparseTagInfo *)&pReparseBuffer->GenericReparseBuffer.DataBuffer[ 0];
436 switch( pCcb->DirectoryCB->ObjectInformation->FileType)
439 case AFS_FILE_TYPE_SYMLINK:
442 if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
445 ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
450 bRelative = AFSIsRelativeName( &pCcb->DirectoryCB->NameInformation.TargetName);
455 if( ulRemainingLen < (ULONG) FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
456 pCcb->DirectoryCB->NameInformation.TargetName.Length)
459 ntStatus = STATUS_BUFFER_TOO_SMALL;
461 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
462 pCcb->DirectoryCB->NameInformation.TargetName.Length;
467 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.Flags = SYMLINK_FLAG_RELATIVE;
469 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength =
470 pCcb->DirectoryCB->NameInformation.TargetName.Length;
472 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength =
473 pCcb->DirectoryCB->NameInformation.TargetName.Length;
475 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameOffset = 0;
477 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameOffset = 0;
479 PathBuffer = pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PathBuffer;
481 RtlCopyMemory( PathBuffer,
482 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
483 pCcb->DirectoryCB->NameInformation.TargetName.Length);
485 pReparseBuffer->ReparseDataLength = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) -
486 FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
487 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength;
492 if( ulRemainingLen < (ULONG) FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
494 pCcb->DirectoryCB->NameInformation.TargetName.Length + 1 * sizeof( WCHAR) +
495 /* Substitute Name */
496 pCcb->DirectoryCB->NameInformation.TargetName.Length + 7 * sizeof( WCHAR))
499 ntStatus = STATUS_BUFFER_TOO_SMALL;
501 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
502 pCcb->DirectoryCB->NameInformation.TargetName.Length + 1 * sizeof( WCHAR) +
503 pCcb->DirectoryCB->NameInformation.TargetName.Length + 7 * sizeof( WCHAR);
508 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.Flags = 0;
510 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength =
511 pCcb->DirectoryCB->NameInformation.TargetName.Length + 7 * sizeof( WCHAR);
513 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength =
514 pCcb->DirectoryCB->NameInformation.TargetName.Length + 1 * sizeof( WCHAR);
516 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameOffset =
517 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength;
519 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameOffset = 0;
521 PathBuffer = pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PathBuffer;
524 *PathBuffer++ = L'\\';
526 RtlCopyMemory( PathBuffer,
527 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
528 pCcb->DirectoryCB->NameInformation.TargetName.Length);
530 PathBuffer += pCcb->DirectoryCB->NameInformation.TargetName.Length / sizeof( WCHAR);
532 /* Substitute Name */
533 *PathBuffer++ = L'\\';
534 *PathBuffer++ = L'?';
535 *PathBuffer++ = L'?';
536 *PathBuffer++ = L'\\';
537 *PathBuffer++ = L'U';
538 *PathBuffer++ = L'N';
539 *PathBuffer++ = L'C';
541 RtlCopyMemory( PathBuffer,
542 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
543 pCcb->DirectoryCB->NameInformation.TargetName.Length);
545 pReparseBuffer->ReparseDataLength = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) -
546 FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
547 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength +
548 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength;
554 case AFS_FILE_TYPE_MOUNTPOINT:
556 UNICODE_STRING Cell, Volume;
559 if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
561 ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
566 if ( !AFSParseMountPointTarget( &pCcb->DirectoryCB->NameInformation.TargetName,
571 ntStatus = STATUS_INVALID_PARAMETER;
576 if( ulRemainingLen < (ULONG) FIELD_OFFSET( AFSReparseTagInfo, AFSMountPoint.Buffer) + Volume.Length + Cell.Length)
579 ntStatus = STATUS_BUFFER_TOO_SMALL;
581 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
582 FIELD_OFFSET( AFSReparseTagInfo, AFSMountPoint.Buffer) +
583 Volume.Length + Cell.Length;
588 pReparseInfo->SubTag = OPENAFS_SUBTAG_MOUNTPOINT;
590 pReparseInfo->AFSMountPoint.Type = Type;
592 pReparseInfo->AFSMountPoint.MountPointCellLength = Cell.Length;
594 pReparseInfo->AFSMountPoint.MountPointVolumeLength = Volume.Length;
596 RtlCopyMemory( pReparseInfo->AFSMountPoint.Buffer,
600 RtlCopyMemory( &pReparseInfo->AFSMountPoint.Buffer[ Cell.Length / sizeof( WCHAR)],
604 pReparseBuffer->ReparseDataLength = (FIELD_OFFSET( AFSReparseTagInfo, AFSMountPoint.Buffer) + Volume.Length + Cell.Length);
609 case AFS_FILE_TYPE_DFSLINK:
612 if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
615 ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
620 bRelative = ( pCcb->DirectoryCB->NameInformation.TargetName.Buffer[0] == L'\\');
622 bDriveLetter = (bRelative == FALSE && pCcb->DirectoryCB->NameInformation.TargetName.Buffer[1] == L':');
627 if( ulRemainingLen < (ULONG) FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
628 pCcb->DirectoryCB->NameInformation.TargetName.Length)
631 ntStatus = STATUS_BUFFER_TOO_SMALL;
633 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
634 pCcb->DirectoryCB->NameInformation.TargetName.Length;
639 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.Flags = SYMLINK_FLAG_RELATIVE;
641 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength =
642 pCcb->DirectoryCB->NameInformation.TargetName.Length;
644 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength =
645 pCcb->DirectoryCB->NameInformation.TargetName.Length;
647 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameOffset = 0;
649 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameOffset = 0;
651 PathBuffer = pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PathBuffer;
653 RtlCopyMemory( PathBuffer,
654 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
655 pCcb->DirectoryCB->NameInformation.TargetName.Length);
657 pReparseBuffer->ReparseDataLength = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) -
658 FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
659 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength;
661 else if ( bDriveLetter)
664 if( ulRemainingLen < (ULONG) FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
666 pCcb->DirectoryCB->NameInformation.TargetName.Length +
667 /* Substitute Name */
668 pCcb->DirectoryCB->NameInformation.TargetName.Length + 4 * sizeof( WCHAR))
671 ntStatus = STATUS_BUFFER_TOO_SMALL;
673 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
674 pCcb->DirectoryCB->NameInformation.TargetName.Length +
675 pCcb->DirectoryCB->NameInformation.TargetName.Length + 4 * sizeof( WCHAR);
680 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.Flags = 0;
682 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength =
683 pCcb->DirectoryCB->NameInformation.TargetName.Length + 4 * sizeof( WCHAR);
685 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength =
686 pCcb->DirectoryCB->NameInformation.TargetName.Length;
688 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameOffset =
689 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength;
691 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameOffset = 0;
693 PathBuffer = pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PathBuffer;
696 RtlCopyMemory( PathBuffer,
697 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
698 pCcb->DirectoryCB->NameInformation.TargetName.Length);
700 PathBuffer += pCcb->DirectoryCB->NameInformation.TargetName.Length / sizeof( WCHAR);
702 /* Substitute Name */
703 *PathBuffer++ = L'\\';
704 *PathBuffer++ = L'?';
705 *PathBuffer++ = L'?';
706 *PathBuffer++ = L'\\';
708 RtlCopyMemory( PathBuffer,
709 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
710 pCcb->DirectoryCB->NameInformation.TargetName.Length);
712 pReparseBuffer->ReparseDataLength = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) -
713 FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
714 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength +
715 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength;
720 if( ulRemainingLen < (ULONG) FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
722 pCcb->DirectoryCB->NameInformation.TargetName.Length + 1 * sizeof( WCHAR) +
723 /* Substitute Name */
724 pCcb->DirectoryCB->NameInformation.TargetName.Length + 7 * sizeof( WCHAR))
727 ntStatus = STATUS_BUFFER_TOO_SMALL;
729 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) +
730 pCcb->DirectoryCB->NameInformation.TargetName.Length + 1 * sizeof( WCHAR) +
731 pCcb->DirectoryCB->NameInformation.TargetName.Length + 7 * sizeof( WCHAR);
736 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.Flags = 0;
738 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength =
739 pCcb->DirectoryCB->NameInformation.TargetName.Length + 7 * sizeof( WCHAR);
741 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength =
742 pCcb->DirectoryCB->NameInformation.TargetName.Length + 1 * sizeof( WCHAR);
744 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameOffset =
745 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength;
747 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameOffset = 0;
749 PathBuffer = pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PathBuffer;
752 *PathBuffer++ = L'\\';
754 RtlCopyMemory( PathBuffer,
755 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
756 pCcb->DirectoryCB->NameInformation.TargetName.Length);
758 PathBuffer += pCcb->DirectoryCB->NameInformation.TargetName.Length / sizeof( WCHAR);
760 /* Substitute Name */
761 *PathBuffer++ = L'\\';
762 *PathBuffer++ = L'?';
763 *PathBuffer++ = L'?';
764 *PathBuffer++ = L'\\';
765 *PathBuffer++ = L'U';
766 *PathBuffer++ = L'N';
767 *PathBuffer++ = L'C';
769 RtlCopyMemory( PathBuffer,
770 pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
771 pCcb->DirectoryCB->NameInformation.TargetName.Length);
773 pReparseBuffer->ReparseDataLength = FIELD_OFFSET( REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer) -
774 FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
775 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.PrintNameLength +
776 pMSFTReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength;
784 ntStatus = STATUS_NOT_A_REPARSE_POINT;
789 if ( ntStatus == STATUS_SUCCESS)
792 ulRemainingLen -= pReparseBuffer->ReparseDataLength;
794 if ( pCcb->DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_MOUNTPOINT)
797 pReparseBuffer->ReparseTag = IO_REPARSE_TAG_SURROGATE|IO_REPARSE_TAG_OPENAFS_DFS;
799 RtlCopyMemory( &pReparseBuffer->ReparseGuid,
800 &GUID_AFS_REPARSE_GUID,
803 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer)
804 + pReparseBuffer->ReparseDataLength;
809 pReparseBuffer->ReparseTag = IO_REPARSE_TAG_SYMLINK;
811 Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer)
812 + pReparseBuffer->ReparseDataLength;
816 AFSReleaseResource( &pCcb->DirectoryCB->NonPaged->Lock);
821 case FSCTL_SET_REPARSE_POINT:
824 REPARSE_GUID_DATA_BUFFER *pReparseGUIDBuffer = (REPARSE_GUID_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
825 REPARSE_DATA_BUFFER *pReparseBuffer = NULL;
826 AFSReparseTagInfo *pReparseInfo = NULL;
827 AFSObjectInfoCB *pParentObjectInfo = NULL;
828 UNICODE_STRING uniTargetName;
829 ULONGLONG ullIndex = 0;
832 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
833 AFS_TRACE_LEVEL_VERBOSE,
834 "AFSProcessUserFsRequest Processing FSCTL_SET_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x\n",
835 &pCcb->DirectoryCB->NameInformation.FileName,
836 pCcb->DirectoryCB->ObjectInformation->FileType,
837 pCcb->DirectoryCB->ObjectInformation->FileAttributes));
839 if( ulInputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
842 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
847 if( (pReparseGUIDBuffer->ReparseTag & 0x0000FFFF) == IO_REPARSE_TAG_OPENAFS_DFS)
850 if( RtlCompareMemory( &pReparseGUIDBuffer->ReparseGuid,
851 &GUID_AFS_REPARSE_GUID,
852 sizeof( GUID)) != sizeof( GUID))
855 ntStatus = STATUS_REPARSE_ATTRIBUTE_CONFLICT;
860 if( ulInputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
861 sizeof( AFSReparseTagInfo))
864 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
869 pReparseInfo = (AFSReparseTagInfo *)pReparseGUIDBuffer->GenericReparseBuffer.DataBuffer;
871 switch( pReparseInfo->SubTag)
874 case OPENAFS_SUBTAG_SYMLINK:
877 if( ulInputBufferLen < (ULONG)(FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
878 FIELD_OFFSET( AFSReparseTagInfo, AFSSymLink.Buffer) +
879 pReparseInfo->AFSSymLink.SymLinkTargetLength))
882 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
887 uniTargetName.Length = pReparseInfo->AFSSymLink.SymLinkTargetLength;
888 uniTargetName.MaximumLength = uniTargetName.Length;
890 uniTargetName.Buffer = (WCHAR *)pReparseInfo->AFSSymLink.Buffer;
895 case OPENAFS_SUBTAG_UNC:
898 if( ulInputBufferLen < (ULONG)(FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
899 FIELD_OFFSET( AFSReparseTagInfo, UNCReferral.Buffer) +
900 pReparseInfo->UNCReferral.UNCTargetLength))
903 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
908 uniTargetName.Length = pReparseInfo->UNCReferral.UNCTargetLength;
909 uniTargetName.MaximumLength = uniTargetName.Length;
911 uniTargetName.Buffer = (WCHAR *)pReparseInfo->UNCReferral.Buffer;
916 case OPENAFS_SUBTAG_MOUNTPOINT:
923 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
932 // Handle Microsoft Reparse Tags
935 switch( pReparseGUIDBuffer->ReparseTag)
938 case IO_REPARSE_TAG_MOUNT_POINT:
941 pReparseBuffer = (REPARSE_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
943 uniTargetName.Length = pReparseBuffer->MountPointReparseBuffer.PrintNameLength;
944 uniTargetName.MaximumLength = uniTargetName.Length;
946 uniTargetName.Buffer = (WCHAR *)((char *)pReparseBuffer->MountPointReparseBuffer.PathBuffer +
947 pReparseBuffer->MountPointReparseBuffer.PrintNameOffset);
949 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
950 AFS_TRACE_LEVEL_VERBOSE_2,
951 "AFSProcessUserFsRequest IO_REPARSE_TAG_MOUNT_POINT request %wZ\n",
954 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
959 case IO_REPARSE_TAG_SYMLINK:
962 pReparseBuffer = (REPARSE_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
964 uniTargetName.Length = pReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameLength;
965 uniTargetName.MaximumLength = uniTargetName.Length;
967 uniTargetName.Buffer = (WCHAR *)((char *)pReparseBuffer->SymbolicLinkReparseBuffer.PathBuffer +
968 pReparseBuffer->SymbolicLinkReparseBuffer.SubstituteNameOffset);
970 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
971 AFS_TRACE_LEVEL_VERBOSE_2,
972 "AFSProcessUserFsRequest IO_REPARSE_TAG_SYMLINK request %wZ\n",
980 ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
987 if( !NT_SUCCESS( ntStatus))
994 // First thing is to locate/create our object information block
998 AFSAcquireExcl( pCcb->DirectoryCB->ObjectInformation->VolumeCB->ObjectInfoTree.TreeLock,
1001 ullIndex = AFSCreateLowIndex( &pCcb->DirectoryCB->ObjectInformation->ParentFileId);
1003 ntStatus = AFSLocateHashEntry( pCcb->DirectoryCB->ObjectInformation->VolumeCB->ObjectInfoTree.TreeHead,
1005 (AFSBTreeEntry **)&pParentObjectInfo);
1007 if ( NT_SUCCESS( ntStatus))
1010 lCount = AFSObjectInfoIncrement( pParentObjectInfo,
1011 AFS_OBJECT_REFERENCE_DIRENTRY);
1013 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
1014 AFS_TRACE_LEVEL_VERBOSE,
1015 "AFSProcessUserFsRequest Increment count on object %p Cnt %d\n",
1020 AFSReleaseResource( pCcb->DirectoryCB->ObjectInformation->VolumeCB->ObjectInfoTree.TreeLock);
1022 if ( NT_SUCCESS( ntStatus))
1026 // Extract out the information to the call to the service
1029 ntStatus = AFSCreateSymlink( &pCcb->AuthGroup,
1031 &pCcb->DirectoryCB->NameInformation.FileName,
1032 pCcb->DirectoryCB->ObjectInformation,
1035 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1036 AFS_TRACE_LEVEL_VERBOSE_2,
1037 "AFSProcessUserFsRequest Processed FSCTL_SET_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x Status %08lX\n",
1038 &pCcb->DirectoryCB->NameInformation.FileName,
1039 pCcb->DirectoryCB->ObjectInformation->FileType,
1040 pCcb->DirectoryCB->ObjectInformation->FileAttributes,
1043 lCount = AFSObjectInfoDecrement( pParentObjectInfo,
1044 AFS_OBJECT_REFERENCE_DIRENTRY);
1046 AFSDbgTrace(( AFS_SUBSYSTEM_OBJECT_REF_COUNTING,
1047 AFS_TRACE_LEVEL_VERBOSE,
1048 "AFSProcessUserFsRequest Decrement count on object %p Cnt %d\n",
1056 case FSCTL_DELETE_REPARSE_POINT:
1059 REPARSE_GUID_DATA_BUFFER *pReparseBuffer = (REPARSE_GUID_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
1061 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1062 AFS_TRACE_LEVEL_VERBOSE_2,
1063 "AFSProcessUserFsRequest Processing FSCTL_DELETE_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x\n",
1064 &pCcb->DirectoryCB->NameInformation.FileName,
1065 pCcb->DirectoryCB->ObjectInformation->FileType,
1066 pCcb->DirectoryCB->ObjectInformation->FileAttributes));
1069 // Check if we have the reparse entry set on the entry
1072 if( !BooleanFlagOn( pCcb->DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
1075 ntStatus = STATUS_NOT_A_REPARSE_POINT;
1080 if( ulInputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
1083 ntStatus = STATUS_INVALID_PARAMETER;
1088 if( (pReparseBuffer->ReparseTag & 0x0000FFFF) != IO_REPARSE_TAG_OPENAFS_DFS)
1091 ntStatus = STATUS_IO_REPARSE_TAG_MISMATCH;
1096 if( RtlCompareMemory( &pReparseBuffer->ReparseGuid,
1097 &GUID_AFS_REPARSE_GUID,
1098 sizeof( GUID)) != sizeof( GUID))
1101 ntStatus = STATUS_REPARSE_ATTRIBUTE_CONFLICT;
1107 // Claim success. The typical usage is setting delete on close
1108 // as the next operation on the reparse point before closing
1112 ntStatus = STATUS_SUCCESS;
1117 #ifndef FSCTL_SET_PURGE_FAILURE_MODE
1118 #define FSCTL_SET_PURGE_FAILURE_MODE CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 156, METHOD_BUFFERED, FILE_ANY_ACCESS)
1121 case FSCTL_SET_PURGE_FAILURE_MODE:
1125 // For the time being just succeed this call
1128 ntStatus = STATUS_SUCCESS;
1136 AFSDbgTrace(( AFS_SUBSYSTEM_FILE_PROCESSING,
1137 AFS_TRACE_LEVEL_VERBOSE_2,
1138 "AFSProcessUserFsRequest Processing default (%08lX) request\n",
1141 ntStatus = STATUS_INVALID_DEVICE_REQUEST;
1156 AFSProcessShareFsCtrl( IN IRP *Irp,
1161 UNREFERENCED_PARAMETER(Fcb);
1162 NTSTATUS ntStatus = STATUS_SUCCESS;
1163 PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1164 ULONG ulOutputBufferLen = 0, ulInputBufferLen;
1165 ULONG ulFsControlCode;
1170 ulFsControlCode = pIrpSp->Parameters.FileSystemControl.FsControlCode;
1172 ulOutputBufferLen = pIrpSp->Parameters.FileSystemControl.OutputBufferLength;
1173 ulInputBufferLen = pIrpSp->Parameters.FileSystemControl.InputBufferLength;
1175 switch( ulFsControlCode)
1178 case FSCTL_PIPE_TRANSCEIVE:
1181 AFSDbgTrace(( AFS_SUBSYSTEM_PIPE_PROCESSING,
1182 AFS_TRACE_LEVEL_VERBOSE,
1183 "AFSProcessShareFsCtrl On pipe %wZ Class FSCTL_PIPE_TRANSCEIVE\n",
1184 &Ccb->DirectoryCB->NameInformation.FileName));
1186 ntStatus = AFSNotifyPipeTransceive( Ccb,
1189 pIrpSp->Parameters.FileSystemControl.Type3InputBuffer,
1191 (ULONG *)&Irp->IoStatus.Information);
1193 if( !NT_SUCCESS( ntStatus))
1196 AFSDbgTrace(( AFS_SUBSYSTEM_PIPE_PROCESSING,
1197 AFS_TRACE_LEVEL_VERBOSE,
1198 "AFSProcessShareFsCtrl Failure on pipe %wZ Class FSCTL_PIPE_TRANSCEIVE Status %08lX\n",
1199 &Ccb->DirectoryCB->NameInformation.FileName,
1209 AFSPrint( "AFSProcessShareFsCtrl (%08lX) For IPC$ input %08lX output %08lX\n",