NTSTATUS
NdFatCommonFlushBuffers (
IN PIRP_CONTEXT IrpContext,
IN PIRP Irp
)
/*++
Routine Description:
This is the common routine for flushing a buffer.
Arguments:
Irp - Supplies the Irp to process
Return Value:
NTSTATUS - The return status for the operation
--*/
{
NTSTATUS Status;
PIO_STACK_LOCATION IrpSp;
PFILE_OBJECT FileObject;
TYPE_OF_OPEN TypeOfOpen;
PVCB Vcb;
PFCB Fcb;
PCCB Ccb;
BOOLEAN VcbAcquired = FALSE;
BOOLEAN FcbAcquired = FALSE;
PDIRENT Dirent;
PBCB DirentBcb = NULL;
PVOLUME_DEVICE_OBJECT volDo = CONTAINING_RECORD( IrpContext->Vcb, VOLUME_DEVICE_OBJECT, Vcb );
BOOLEAN secondarySessionResourceAcquired = FALSE;
PSECONDARY_REQUEST secondaryRequest = NULL;
PNDFS_REQUEST_HEADER ndfsRequestHeader;
PNDFS_WINXP_REQUEST_HEADER ndfsWinxpRequestHeader;
PNDFS_WINXP_REPLY_HEADER ndfsWinxpReplytHeader;
LARGE_INTEGER timeOut;
PAGED_CODE();
IrpSp = IoGetCurrentIrpStackLocation( Irp );
DebugTrace(+1, Dbg, "FatCommonFlushBuffers\n", 0);
DebugTrace( 0, Dbg, "Irp = %08lx\n", Irp);
DebugTrace( 0, Dbg, "->FileObject = %08lx\n", IrpSp->FileObject);
//
// Extract and decode the file object
//
FileObject = IrpSp->FileObject;
TypeOfOpen = FatDecodeFileObject( FileObject, &Vcb, &Fcb, &Ccb );
//
// CcFlushCache is always synchronous, so if we can't wait enqueue
// the irp to the Fsp.
//
if ( !FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT) ) {
Status = FatFsdPostRequest( IrpContext, Irp );
DebugTrace(-1, Dbg, "FatCommonFlushBuffers -> %08lx\n", Status );
return Status;
}
Status = STATUS_SUCCESS;
try {
if (!FlagOn(Ccb->NdFatFlags, ND_FAT_CCB_FLAG_UNOPENED)) {
do {
secondarySessionResourceAcquired
= SecondaryAcquireResourceExclusiveLite( IrpContext,
&volDo->Secondary->SessionResource,
BooleanFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT) );
if (FlagOn(volDo->Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_REMOTE_DISCONNECTED) ) {
PrintIrp( Dbg2, "SECONDARY_THREAD_FLAG_REMOTE_DISCONNECTED", NULL, IrpContext->OriginatingIrp );
FatRaiseStatus( IrpContext, STATUS_CANT_WAIT );
}
secondaryRequest = ALLOC_WINXP_SECONDARY_REQUEST( volDo->Secondary, IRP_MJ_FLUSH_BUFFERS, 0 );
if (secondaryRequest == NULL) {
Status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
ndfsRequestHeader = &secondaryRequest->NdfsRequestHeader;
INITIALIZE_NDFS_REQUEST_HEADER( ndfsRequestHeader, NDFS_COMMAND_EXECUTE, volDo->Secondary, IRP_MJ_FLUSH_BUFFERS, 0 );
ndfsWinxpRequestHeader = (PNDFS_WINXP_REQUEST_HEADER)(ndfsRequestHeader+1);
ASSERT( ndfsWinxpRequestHeader == (PNDFS_WINXP_REQUEST_HEADER)secondaryRequest->NdfsRequestData );
INITIALIZE_NDFS_WINXP_REQUEST_HEADER( ndfsWinxpRequestHeader,
IrpContext->OriginatingIrp,
IoGetCurrentIrpStackLocation(IrpContext->OriginatingIrp),
Ccb->PrimaryFileHandle );
ASSERT( !ExIsResourceAcquiredSharedLite(&IrpContext->Vcb->Resource) );
secondaryRequest->RequestType = SECONDARY_REQ_SEND_MESSAGE;
QueueingSecondaryRequest( volDo->Secondary, secondaryRequest );
timeOut.QuadPart = -NDFAT_TIME_OUT;
Status = KeWaitForSingleObject( &secondaryRequest->CompleteEvent, Executive, KernelMode, FALSE, &timeOut );
if (Status != STATUS_SUCCESS) {
ASSERT( NDFAT_BUG );
break;
}
KeClearEvent (&secondaryRequest->CompleteEvent);
if (BooleanFlagOn(volDo->Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_REMOTE_DISCONNECTED)) {
FatRaiseStatus( IrpContext, STATUS_CANT_WAIT );
}
if (secondaryRequest->ExecuteStatus == STATUS_SUCCESS) {
ndfsWinxpReplytHeader = (PNDFS_WINXP_REPLY_HEADER)secondaryRequest->NdfsReplyData;
ASSERT(ndfsWinxpReplytHeader->Status == STATUS_SUCCESS);
}
if (secondaryRequest) {
DereferenceSecondaryRequest( secondaryRequest );
secondaryRequest = NULL;
}
if ( secondarySessionResourceAcquired == TRUE ) {
SecondaryReleaseResourceLite( IrpContext, &volDo->Secondary->SessionResource );
secondarySessionResourceAcquired = FALSE;
}
break;
} while(0);
}
Status = STATUS_SUCCESS;
//
// Case on the type of open that we are trying to flush
//
switch (TypeOfOpen) {
case VirtualVolumeFile:
case EaFile:
case DirectoryFile:
DebugTrace(0, Dbg, "Flush that does nothing\n", 0);
break;
case UserFileOpen:
DebugTrace(0, Dbg, "Flush User File Open\n", 0);
(VOID)FatAcquireExclusiveFcb( IrpContext, Fcb );
FcbAcquired = TRUE;
FatVerifyFcb( IrpContext, Fcb );
//
// If the file is cached then flush its cache
//
Status = FatFlushFile( IrpContext, Fcb, Flush );
//
// Also update and flush the file's dirent in the parent directory if the
// file flush worked.
//
if (NT_SUCCESS( Status )) {
//
// Insure that we get the filesize to disk correctly. This is
// benign if it was already good.
//
// (why do we need to do this?)
//
SetFlag(FileObject->Flags, FO_FILE_SIZE_CHANGED);
#if 0
FatUpdateDirentFromFcb( IrpContext, FileObject, Fcb, Ccb );
#endif
//
// Flush the volume file to get any allocation information
// updates to disk.
//
if (FlagOn(Fcb->FcbState, FCB_STATE_FLUSH_FAT)) {
Status = FatFlushFat( IrpContext, Vcb );
ClearFlag(Fcb->FcbState, FCB_STATE_FLUSH_FAT);
}
//
// Set the write through bit so that these modifications
// will be completed with the request.
//
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_WRITE_THROUGH);
}
break;
case UserDirectoryOpen:
//
// If the user had opened the root directory then we'll
// oblige by flushing the volume.
//
if (NodeType(Fcb) != FAT_NTC_ROOT_DCB) {
DebugTrace(0, Dbg, "Flush a directory does nothing\n", 0);
break;
}
case UserVolumeOpen:
DebugTrace(0, Dbg, "Flush User Volume Open, or root dcb\n", 0);
//
// Acquire exclusive access to the Vcb.
//
{
BOOLEAN Finished;
Finished = FatAcquireExclusiveSecondaryVcb( IrpContext, Vcb );
ASSERT( Finished );
}
VcbAcquired = TRUE;
//
// Mark the volume clean and then flush the volume file,
// and then all directories
//
Status = FatFlushVolume( IrpContext, Vcb, Flush );
//
// If the volume was dirty, do the processing that the delayed
// callback would have done.
//
if (FlagOn(Vcb->VcbState, VCB_STATE_FLAG_VOLUME_DIRTY)) {
//
// Cancel any pending clean volumes.
//
(VOID)KeCancelTimer( &Vcb->CleanVolumeTimer );
(VOID)KeRemoveQueueDpc( &Vcb->CleanVolumeDpc );
//
// The volume is now clean, note it.
//
if (!FlagOn(Vcb->VcbState, VCB_STATE_FLAG_MOUNTED_DIRTY)) {
FatMarkVolume( IrpContext, Vcb, VolumeClean );
ClearFlag( Vcb->VcbState, VCB_STATE_FLAG_VOLUME_DIRTY );
}
//
// Unlock the volume if it is removable.
//
if (FlagOn(Vcb->VcbState, VCB_STATE_FLAG_REMOVABLE_MEDIA) &&
!FlagOn(Vcb->VcbState, VCB_STATE_FLAG_BOOT_OR_PAGING_FILE)) {
FatToggleMediaEjectDisable( IrpContext, Vcb, FALSE );
}
}
break;
default:
FatBugCheck( TypeOfOpen, 0, 0 );
}
FatUnpinBcb( IrpContext, DirentBcb );
FatUnpinRepinnedBcbs( IrpContext );
} finally {
DebugUnwind( FatCommonFlushBuffers );
if (secondaryRequest)
DereferenceSecondaryRequest( secondaryRequest );
if (secondarySessionResourceAcquired) {
SecondaryReleaseResourceLite( IrpContext, &volDo->Secondary->SessionResource );
}
FatUnpinBcb( IrpContext, DirentBcb );
if (VcbAcquired) { FatReleaseSecondaryVcb( IrpContext, Vcb ); }
if (FcbAcquired) { FatReleaseFcb( IrpContext, Fcb ); }
//
// If this is a normal termination then pass the request on
// to the target device object.
//
if (!AbnormalTermination()) {
NTSTATUS DriverStatus;
PIO_STACK_LOCATION NextIrpSp;
//
// Get the next stack location, and copy over the stack location
//
NextIrpSp = IoGetNextIrpStackLocation( Irp );
*NextIrpSp = *IrpSp;
//
// Set up the completion routine
//
IoSetCompletionRoutine( Irp,
FatFlushCompletionRoutine,
ULongToPtr( Status ),
TRUE,
TRUE,
TRUE );
//
// Send the request.
//
DriverStatus = IoCallDriver(Vcb->TargetDeviceObject, Irp);
Status = (DriverStatus == STATUS_INVALID_DEVICE_REQUEST) ?
Status : DriverStatus;
//
// Free the IrpContext and return to the caller.
//
FatCompleteRequest( IrpContext, FatNull, STATUS_SUCCESS );
}
DebugTrace(-1, Dbg, "FatCommonFlushBuffers -> %08lx\n", Status);
}
return Status;
}
NTSTATUS
FatProcessException (
IN PIRP_CONTEXT IrpContext,
IN PIRP Irp,
IN NTSTATUS ExceptionCode
)
/*++
Routine Description:
This routine process an exception. It either completes the request
with the saved exception status or it sends it off to IoRaiseHardError()
Arguments:
Irp - Supplies the Irp being processed
ExceptionCode - Supplies the normalized exception status being handled
Return Value:
NTSTATUS - Returns the results of either posting the Irp or the
saved completion status.
--*/
{
PVCB Vcb;
PIO_STACK_LOCATION IrpSp;
FAT_VOLUME_STATE TransitionState = VolumeDirty;
ULONG SavedFlags;
DebugTrace(0, Dbg, "FatProcessException\n", 0);
//
// If there is not an irp context, we must have had insufficient resources.
//
if ( !ARGUMENT_PRESENT( IrpContext ) ) {
FatCompleteRequest( FatNull, Irp, ExceptionCode );
return ExceptionCode;
}
//
// Get the real exception status from IrpContext->ExceptionStatus, and
// reset it.
//
ExceptionCode = IrpContext->ExceptionStatus;
FatResetExceptionState( IrpContext );
//
// If this is an Mdl write request, then take care of the Mdl
// here so that things get cleaned up properly. Cc now leaves
// the MDL in place so a filesystem can retry after clearing an
// internal condition (FAT does not).
//
#if __NDAS_FAT_WIN2K_SUPPORT__
if (NdFatCcMdlWriteAbort &&
(IrpContext->MajorFunction == IRP_MJ_WRITE) &&
(FlagOn( IrpContext->MinorFunction, IRP_MN_COMPLETE_MDL ) == IRP_MN_COMPLETE_MDL) &&
(Irp->MdlAddress != NULL)) {
PIO_STACK_LOCATION LocalIrpSp = IoGetCurrentIrpStackLocation(Irp);
NdFatCcMdlWriteAbort( LocalIrpSp->FileObject, Irp->MdlAddress );
Irp->MdlAddress = NULL;
}
#else
if ((IrpContext->MajorFunction == IRP_MJ_WRITE) &&
(FlagOn( IrpContext->MinorFunction, IRP_MN_COMPLETE_MDL ) == IRP_MN_COMPLETE_MDL) &&
(Irp->MdlAddress != NULL)) {
PIO_STACK_LOCATION LocalIrpSp = IoGetCurrentIrpStackLocation(Irp);
CcMdlWriteAbort( LocalIrpSp->FileObject, Irp->MdlAddress );
Irp->MdlAddress = NULL;
}
#endif
//
// If we are going to post the request, we may have to lock down the
// user's buffer, so do it here in a try except so that we failed the
// request if the LockPages fails.
//
// Also unpin any repinned Bcbs, protected by the try {} except {} filter.
//
try {
SavedFlags = IrpContext->Flags;
//
// Make sure we don't try to write through Bcbs
//
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_DISABLE_WRITE_THROUGH);
FatUnpinRepinnedBcbs( IrpContext );
IrpContext->Flags = SavedFlags;
//
// If we will have to post the request, do it here. Note
// that the last thing FatPrePostIrp() does is mark the Irp pending,
// so it is critical that we actually return PENDING. Nothing
// from this point to return can fail, so we are OK.
//
// We cannot do a verify operations at APC level because we
// have to wait for Io operations to complete.
//
#if __NDAS_FAT__
if (!FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_RECURSIVE_CALL) &&
(((ExceptionCode == STATUS_VERIFY_REQUIRED) && (KeGetCurrentIrql() >= APC_LEVEL)) ||
(!FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT) && ExceptionCode == STATUS_CANT_WAIT))) {
ExceptionCode = FatFsdPostRequest( IrpContext, Irp );
}
#else
if (!FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_RECURSIVE_CALL) &&
(((ExceptionCode == STATUS_VERIFY_REQUIRED) && (KeGetCurrentIrql() >= APC_LEVEL)) ||
(ExceptionCode == STATUS_CANT_WAIT))) {
ExceptionCode = FatFsdPostRequest( IrpContext, Irp );
}
#endif
} except( FatExceptionFilter( IrpContext, GetExceptionInformation() ) ) {
ExceptionCode = IrpContext->ExceptionStatus;
IrpContext->ExceptionStatus = 0;
IrpContext->Flags = SavedFlags;
}
//
// If we posted the request, just return here.
//
if (ExceptionCode == STATUS_PENDING) {
return ExceptionCode;
}
Irp->IoStatus.Status = ExceptionCode;
//
// If this request is not a "top-level" irp, just complete it.
//
if (FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_RECURSIVE_CALL)) {
//
// If there is a cache operation above us, commute verify
// to a lock conflict. This will cause retries so that
// we have a chance of getting through without needing
// to return an unaesthetic error for the operation.
//
if (IoGetTopLevelIrp() == (PIRP)FSRTL_CACHE_TOP_LEVEL_IRP &&
ExceptionCode == STATUS_VERIFY_REQUIRED) {
ExceptionCode = STATUS_FILE_LOCK_CONFLICT;
}
FatCompleteRequest( IrpContext, Irp, ExceptionCode );
return ExceptionCode;
}
if (IoIsErrorUserInduced(ExceptionCode)) {
//
// Check for the various error conditions that can be caused by,
// and possibly resolved by the user.
//
if (ExceptionCode == STATUS_VERIFY_REQUIRED) {
PDEVICE_OBJECT Device;
DebugTrace(0, Dbg, "Perform Verify Operation\n", 0);
//
// Now we are at the top level file system entry point.
//
// Grab the device to verify from the thread local storage
// and stick it in the information field for transportation
// to the fsp. We also clear the field at this time.
//
Device = IoGetDeviceToVerify( Irp->Tail.Overlay.Thread );
IoSetDeviceToVerify( Irp->Tail.Overlay.Thread, NULL );
if ( Device == NULL ) {
Device = IoGetDeviceToVerify( PsGetCurrentThread() );
IoSetDeviceToVerify( PsGetCurrentThread(), NULL );
ASSERT( Device != NULL );
}
//
// Let's not BugCheck just because the driver messed up.
//
if (Device == NULL) {
ExceptionCode = STATUS_DRIVER_INTERNAL_ERROR;
FatCompleteRequest( IrpContext, Irp, ExceptionCode );
return ExceptionCode;
}
//
// FatPerformVerify() will do the right thing with the Irp.
return FatPerformVerify( IrpContext, Irp, Device );
}
//
// The other user induced conditions generate an error unless
// they have been disabled for this request.
//
if (FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DISABLE_POPUPS)) {
FatCompleteRequest( IrpContext, Irp, ExceptionCode );
return ExceptionCode;
} else {
//
// Generate a pop-up
//
PDEVICE_OBJECT RealDevice;
PVPB Vpb;
PETHREAD Thread;
if (IoGetCurrentIrpStackLocation(Irp)->FileObject != NULL) {
Vpb = IoGetCurrentIrpStackLocation(Irp)->FileObject->Vpb;
} else {
Vpb = NULL;
}
//
// The device to verify is either in my thread local storage
// or that of the thread that owns the Irp.
//
Thread = Irp->Tail.Overlay.Thread;
RealDevice = IoGetDeviceToVerify( Thread );
if ( RealDevice == NULL ) {
Thread = PsGetCurrentThread();
RealDevice = IoGetDeviceToVerify( Thread );
ASSERT( RealDevice != NULL );
}
//
// Let's not BugCheck just because the driver messed up.
//
if (RealDevice == NULL) {
FatCompleteRequest( IrpContext, Irp, ExceptionCode );
return ExceptionCode;
}
//
// This routine actually causes the pop-up. It usually
// does this by queuing an APC to the callers thread,
// but in some cases it will complete the request immediately,
// so it is very important to IoMarkIrpPending() first.
//
IoMarkIrpPending( Irp );
IoRaiseHardError( Irp, Vpb, RealDevice );
//
// We will be handing control back to the caller here, so
// reset the saved device object.
//
IoSetDeviceToVerify( Thread, NULL );
//
// The Irp will be completed by Io or resubmitted. In either
// case we must clean up the IrpContext here.
//
FatDeleteIrpContext( IrpContext );
return STATUS_PENDING;
}
}
//
// This is just a run of the mill error. If is a STATUS that we
// raised ourselves, and the information would be use for the
// user, raise an informational pop-up.
//
IrpSp = IoGetCurrentIrpStackLocation( Irp );
Vcb = IrpContext->Vcb;
//
// Now, if the Vcb is unknown to us this means that the error was raised
// in the process of a mount and before we even had a chance to build
// a full Vcb - and was really handled there.
//
if (Vcb != NULL) {
if ( !FatDeviceIsFatFsdo( IrpSp->DeviceObject) &&
!NT_SUCCESS(ExceptionCode) &&
!FsRtlIsTotalDeviceFailure(ExceptionCode) ) {
TransitionState = VolumeDirtyWithSurfaceTest;
}
//
// If this was a STATUS_FILE_CORRUPT or similar error indicating some
// nastiness out on the media, then mark the volume permanently dirty.
//
if (!FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DISABLE_POPUPS) &&
( TransitionState == VolumeDirtyWithSurfaceTest ||
(ExceptionCode == STATUS_FILE_CORRUPT_ERROR) ||
(ExceptionCode == STATUS_DISK_CORRUPT_ERROR) ||
(ExceptionCode == STATUS_EA_CORRUPT_ERROR) ||
(ExceptionCode == STATUS_INVALID_EA_NAME) ||
(ExceptionCode == STATUS_EA_LIST_INCONSISTENT) ||
(ExceptionCode == STATUS_NO_EAS_ON_FILE) )) {
ASSERT( NodeType(Vcb) == FAT_NTC_VCB );
SetFlag( Vcb->VcbState, VCB_STATE_FLAG_MOUNTED_DIRTY );
//
// Do the "dirty" work, ignoring any error.
//
try {
FatMarkVolume( IrpContext, Vcb, TransitionState );
} except( FatExceptionFilter( IrpContext, GetExceptionInformation() ) ) {
NOTHING;
}
}
}
NTSTATUS
FatSetFsLabelInfo (
IN PIRP_CONTEXT IrpContext,
IN PVCB Vcb,
IN PFILE_FS_LABEL_INFORMATION Buffer
)
/*++
Routine Description:
This routine implements the set volume label call
Arguments:
Vcb - Supplies the Vcb being queried
Buffer - Supplies the input where the information is stored.
Return Value:
NTSTATUS - Returns the status for the operation
--*/
{
NTSTATUS Status;
PDIRENT Dirent;
PBCB DirentBcb = NULL;
ULONG ByteOffset;
WCHAR TmpBuffer[11];
UCHAR OemBuffer[11];
OEM_STRING OemLabel;
UNICODE_STRING UnicodeString;
UNICODE_STRING UpcasedLabel;
DebugTrace(+1, Dbg, "FatSetFsLabelInfo...\n", 0);
//
// Setup our local variable
//
UnicodeString.Length = (USHORT)Buffer->VolumeLabelLength;
UnicodeString.MaximumLength = UnicodeString.Length;
UnicodeString.Buffer = (PWSTR) &Buffer->VolumeLabel[0];
//
// Make sure the name can fit into the stack buffer
//
if ( UnicodeString.Length > 11*sizeof(WCHAR) ) {
return STATUS_INVALID_VOLUME_LABEL;
}
//
// Upcase the name and convert it to the Oem code page.
//
OemLabel.Buffer = &OemBuffer[0];
OemLabel.Length = 0;
OemLabel.MaximumLength = 11;
Status = RtlUpcaseUnicodeStringToCountedOemString( &OemLabel,
&UnicodeString,
FALSE );
//
// Volume label that fits in 11 unicode character length limit
// is not necessary within 11 characters in OEM character set.
//
if (!NT_SUCCESS( Status )) {
DebugTrace(-1, Dbg, "FatSetFsLabelInfo: Label must be too long. %08lx\n", Status );
return STATUS_INVALID_VOLUME_LABEL;
}
//
// Strip spaces off of the label.
//
if (OemLabel.Length > 0) {
USHORT i;
USHORT LastSpaceIndex = MAXUSHORT;
//
// Check the label for illegal characters
//
for ( i = 0; i < (ULONG)OemLabel.Length; i += 1 ) {
if ( FsRtlIsLeadDbcsCharacter( OemLabel.Buffer[i] ) ) {
LastSpaceIndex = MAXUSHORT;
i += 1;
continue;
}
if (!FsRtlIsAnsiCharacterLegalFat(OemLabel.Buffer[i], FALSE) ||
(OemLabel.Buffer[i] == '.')) {
return STATUS_INVALID_VOLUME_LABEL;
}
//
// Watch for the last run of spaces, so we can strip them.
//
if (OemLabel.Buffer[i] == ' ' &&
LastSpaceIndex == MAXUSHORT) {
LastSpaceIndex = i;
} else {
LastSpaceIndex = MAXUSHORT;
}
}
if (LastSpaceIndex != MAXUSHORT) {
OemLabel.Length = LastSpaceIndex;
}
}
//
// Get the Unicode upcased string to store in the VPB.
//
UpcasedLabel.Length = UnicodeString.Length;
UpcasedLabel.MaximumLength = 11*sizeof(WCHAR);
UpcasedLabel.Buffer = &TmpBuffer[0];
Status = RtlOemStringToCountedUnicodeString( &UpcasedLabel,
&OemLabel,
FALSE );
if (!NT_SUCCESS( Status )) {
DebugTrace(-1, Dbg, "FatSetFsLabelInfo: Label must be too long. %08lx\n", Status );
return STATUS_INVALID_VOLUME_LABEL;
}
DirentBcb = NULL;
//
// Make this look like a write through to disk. This is important to
// avoid a unpleasant window where it looks like we have the wrong volume.
//
SetFlag( IrpContext->Flags, IRP_CONTEXT_FLAG_WRITE_THROUGH );
try {
//
// Are we setting or removing the label? Note that shaving spaces could
// make this different than wondering if the input buffer is non-zero length.
//
if (OemLabel.Length > 0) {
//
// Locate the volume label if there already is one
//
FatLocateVolumeLabel( IrpContext,
Vcb,
&Dirent,
&DirentBcb,
&ByteOffset );
//
// Check that we really got one, if not then we need to create
// a new one. The procedure we call will raise an appropriate
// status if we are not able to allocate a new dirent
//
if (Dirent == NULL) {
ByteOffset = FatCreateNewDirent( IrpContext,
Vcb->RootDcb,
1 );
FatPrepareWriteDirectoryFile( IrpContext,
Vcb->RootDcb,
ByteOffset,
sizeof(DIRENT),
&DirentBcb,
&Dirent,
FALSE,
TRUE,
&Status );
ASSERT( NT_SUCCESS( Status ));
} else {
//
// Just mark this guy dirty now.
//
FatSetDirtyBcb( IrpContext, DirentBcb, Vcb, TRUE );
}
//
// Now reconstruct the volume label dirent.
//
FatConstructLabelDirent( IrpContext,
Dirent,
&OemLabel );
//
// Unpin the Bcb here so that we will get any IO errors
// here before changing the VPB label.
//
FatUnpinBcb( IrpContext, DirentBcb );
FatUnpinRepinnedBcbs( IrpContext );
//
// Now set the upcased label in the VPB
//
RtlCopyMemory( &Vcb->Vpb->VolumeLabel[0],
&UpcasedLabel.Buffer[0],
UpcasedLabel.Length );
Vcb->Vpb->VolumeLabelLength = UpcasedLabel.Length;
} else {
//
// Otherwise we're trying to delete the label
// Locate the current volume label if there already is one
//
FatLocateVolumeLabel( IrpContext,
Vcb,
&Dirent,
&DirentBcb,
&ByteOffset );
//
// Check that we really got one
//
if (Dirent == NULL) {
try_return( Status = STATUS_SUCCESS );
}
//
// Now delete the current label.
//
Dirent->FileName[0] = FAT_DIRENT_DELETED;
ASSERT( (Vcb->RootDcb->Specific.Dcb.UnusedDirentVbo == 0xffffffff) ||
RtlAreBitsSet( &Vcb->RootDcb->Specific.Dcb.FreeDirentBitmap,
ByteOffset / sizeof(DIRENT),
1 ) );
RtlClearBits( &Vcb->RootDcb->Specific.Dcb.FreeDirentBitmap,
ByteOffset / sizeof(DIRENT),
1 );
FatSetDirtyBcb( IrpContext, DirentBcb, Vcb, TRUE );
//
// Unpin the Bcb here so that we will get any IO errors
// here before changing the VPB label.
//
FatUnpinBcb( IrpContext, DirentBcb );
FatUnpinRepinnedBcbs( IrpContext );
//
// Now set the label in the VPB
//
Vcb->Vpb->VolumeLabelLength = 0;
}
Status = STATUS_SUCCESS;
FatSortDirectory(IrpContext, Vcb->RootDcb);
try_exit: NOTHING;
} finally {
DebugUnwind( FatSetFsALabelInfo );
FatUnpinBcb( IrpContext, DirentBcb );
DebugTrace(-1, Dbg, "FatSetFsALabelInfo -> STATUS_SUCCESS\n", 0);
}
return Status;
}
NTSTATUS
SecondaryRecoverySession (
IN PSECONDARY Secondary
)
{
NTSTATUS status;
LONG slotIndex;
LARGE_INTEGER timeOut;
OBJECT_ATTRIBUTES objectAttributes;
ULONG reconnectionTry;
PLIST_ENTRY ccblistEntry;
BOOLEAN isLocalAddress;
DebugTrace2( 0, Dbg2, ("SecondaryRecoverySession: Called Secondary = %p\n", Secondary) );
SetFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
ASSERT( FlagOn(Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_REMOTE_DISCONNECTED) );
ASSERT( Secondary->ThreadHandle );
ASSERT( IsListEmpty(&Secondary->RequestQueue) );
for (slotIndex=0; slotIndex < Secondary->Thread.SessionContext.SessionSlotCount; slotIndex++) {
ASSERT( Secondary->Thread.SessionSlot[slotIndex] == NULL );
}
if (Secondary->ThreadHandle) {
ASSERT( Secondary->ThreadObject );
timeOut.QuadPart = -NDASFAT_TIME_OUT;
status = KeWaitForSingleObject( Secondary->ThreadObject,
Executive,
KernelMode,
FALSE,
&timeOut );
if (status != STATUS_SUCCESS) {
NDASFAT_ASSERT( FALSE );
ClearFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
return status;
}
DebugTrace2( 0, Dbg2, ("Secondary_Stop: thread stoped\n") );
ObDereferenceObject( Secondary->ThreadObject );
Secondary->ThreadHandle = 0;
Secondary->ThreadObject = 0;
RtlZeroMemory( &Secondary->Thread.Flags, sizeof(SECONDARY) - FIELD_OFFSET(SECONDARY, Thread.Flags) );
}
for (status = STATUS_UNSUCCESSFUL, reconnectionTry = 0; reconnectionTry < MAX_RECONNECTION_TRY; reconnectionTry++) {
if (FlagOn(Secondary->VolDo->Vcb.VcbState, VCB_STATE_FLAG_LOCKED)) {
ClearFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
return STATUS_UNSUCCESSFUL;
}
if (FlagOn(Secondary->VolDo->Vcb.VcbState, VCB_STATE_FLAG_SHUTDOWN)) {
ClearFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
return STATUS_UNSUCCESSFUL;
}
if (FlagOn(Secondary->VolDo->Vcb.VcbState, VCB_STATE_FLAG_SHUTDOWN)) {
ClearFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
return STATUS_UNSUCCESSFUL;
}
if (FlagOn(Secondary->VolDo->NdasFatFlags, ND_FAT_DEVICE_FLAG_SHUTDOWN)) {
ClearFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
return STATUS_UNSUCCESSFUL;
}
if (Secondary->VolDo->NetdiskEnableMode == NETDISK_SECONDARY2PRIMARY) {
status = STATUS_SUCCESS;
} else {
status = ((PVOLUME_DEVICE_OBJECT) FatData.DiskFileSystemDeviceObject)->
NdfsCallback.SecondaryToPrimary( Secondary->VolDo->Vcb.Vpb->RealDevice, TRUE );
if (status == STATUS_NO_SUCH_DEVICE) {
NDASFAT_ASSERT( FlagOn(Secondary->VolDo->Vcb.VcbState, VCB_STATE_FLAG_LOCKED) );
ClearFlag( Secondary->Flags, SECONDARY_FLAG_RECONNECTING );
return STATUS_UNSUCCESSFUL;
}
}
//FatDebugTraceLevel = 0;
DebugTrace2( 0, Dbg2, ("SecondaryToPrimary status = %x\n", status) );
#if 0
if (queryResult == TRUE) {
BOOLEAN result0, result1;
IRP_CONTEXT IrpContext;
ASSERT( Secondary->VolDo->Vcb.VirtualVolumeFile );
result0 = CcPurgeCacheSection( &Secondary->VolDo->Vcb.SectionObjectPointers,
NULL,
0,
FALSE );
ASSERT( Secondary->VolDo->Vcb.RootDcb->Specific.Dcb.DirectoryFile );
result1 = CcPurgeCacheSection( &Secondary->VolDo->Vcb.RootDcb->NonPaged->SectionObjectPointers,
NULL,
0,
FALSE );
ASSERT( result0 == TRUE );
ASSERT( result1 == TRUE );
ASSERT(KeGetCurrentIrql() < DISPATCH_LEVEL);
RtlZeroMemory( &IrpContext, sizeof(IRP_CONTEXT) );
SetFlag(IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT);
FatTearDownAllocationSupport ( &IrpContext, &Secondary->VolDo->Vcb );
FatSetupAllocationSupport( &IrpContext, &Secondary->VolDo->Vcb );
FatCheckDirtyBit( &IrpContext, &Secondary->VolDo->Vcb );
ASSERT( IrpContext.Repinned.Bcb[0] == NULL );
FatUnpinRepinnedBcbs( &IrpContext );
Secondary->VolDo->NetdiskEnableMode = NETDISK_SECONDARY2PRIMARY;
Secondary->VolDo->SecondaryState = CONNECT_TO_LOCAL_STATE;
}
#endif
if (status == STATUS_SUCCESS) {
PVCB vcb = &Secondary->VolDo->Vcb;
#if 0
TOP_LEVEL_CONTEXT topLevelContext;
PTOP_LEVEL_CONTEXT threadTopLevelContext;
#endif
IRP_CONTEXT tempIrpContext2;
PIRP_CONTEXT tempIrpContext = NULL;
SetFlag( Secondary->Flags, SECONDARY_FLAG_CLEANUP_VOLUME );
ASSERT( !ExIsResourceAcquiredExclusiveLite(&FatData.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(&FatData.Resource) );
ASSERT( !ExIsResourceAcquiredExclusiveLite(&vcb->SecondaryResource) );
ASSERT( !ExIsResourceAcquiredSharedLite(&vcb->SecondaryResource) );
//FatReleaseAllResources( IrpContext );
//ObReferenceObject( vcb->TargetDeviceObject );
DebugTrace2( 0, Dbg2, ("Vcb->State = %X\n", vcb->VcbState) );
DebugTrace2( 0, Dbg2, ("Vcb->Vpb->ReferenceCount = %X\n", vcb->Vpb->ReferenceCount) );
DebugTrace2( 0, Dbg2, ("Vcb->TargetDeviceObject->ReferenceCount = %X\n", vcb->TargetDeviceObject->ReferenceCount) );
tempIrpContext = NULL;
#if 0
threadTopLevelContext = FatInitializeTopLevelIrp( &topLevelContext, TRUE, FALSE );
ASSERT( threadTopLevelContext == &topLevelContext );
FatInitializeIrpContext( NULL, TRUE, &tempIrpContext );
FatUpdateIrpContextWithTopLevel( tempIrpContext, threadTopLevelContext );
ASSERT( FlagOn(tempIrpContext->State, IRP_CONTEXT_STATE_OWNS_TOP_LEVEL) );
#endif
tempIrpContext = &tempIrpContext2;
RtlZeroMemory( tempIrpContext, sizeof(IRP_CONTEXT) );
SetFlag( tempIrpContext->Flags, IRP_CONTEXT_FLAG_WAIT );
SetFlag( tempIrpContext->NdasFatFlags, NDAS_FAT_IRP_CONTEXT_FLAG_SECONDARY_CONTEXT );
tempIrpContext->MajorFunction = IRP_MJ_FILE_SYSTEM_CONTROL;
tempIrpContext->MinorFunction = IRP_MN_MOUNT_VOLUME;
tempIrpContext->Vcb = vcb;
ASSERT( KeGetCurrentIrql() == PASSIVE_LEVEL );
try {
status = STATUS_UNSUCCESSFUL;
status = CleanUpVcb( tempIrpContext, vcb );
} finally {
//FatCompleteRequest( tempIrpContext, NULL, 0 );
//ASSERT( IoGetTopLevelIrp() != (PIRP) &topLevelContext );
tempIrpContext = NULL;
}
ASSERT( KeGetCurrentIrql() == PASSIVE_LEVEL );
ASSERT( status == STATUS_SUCCESS );
//ASSERT( FlagOn(vcb->VcbState, VCB_STATE_MOUNT_COMPLETED) );
ASSERT( FlagOn(Secondary->VolDo->NdasFatFlags, ND_FAT_DEVICE_FLAG_MOUNTED) );
ASSERT( !ExIsResourceAcquiredExclusiveLite(&FatData.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(&FatData.Resource) );
ASSERT( !ExIsResourceAcquiredExclusiveLite(&vcb->SecondaryResource) );
ASSERT( !ExIsResourceAcquiredSharedLite(&vcb->SecondaryResource) );
ClearFlag( Secondary->Flags, SECONDARY_FLAG_CLEANUP_VOLUME );
DebugTrace2( 0, Dbg2, ("Vcb->TargetDeviceObject->ReferenceCount = %X\n", vcb->TargetDeviceObject->ReferenceCount) );
DebugTrace2( 0, Dbg2, ("Vcb->Vpb->ReferenceCount = %X\n", vcb->Vpb->ReferenceCount) );
DebugTrace2( 0, Dbg2, ("Vcb->CloseCount = %d\n", vcb->OpenFileCount) );
#if 0
tempIrpContext = NULL;
threadTopLevelContext = FatInitializeTopLevelIrp( &topLevelContext, TRUE, FALSE );
ASSERT( threadTopLevelContext == &topLevelContext );
FatInitializeIrpContext( NULL, TRUE, &tempIrpContext );
FatUpdateIrpContextWithTopLevel( tempIrpContext, threadTopLevelContext );
ASSERT( FlagOn(tempIrpContext->State, IRP_CONTEXT_STATE_OWNS_TOP_LEVEL) );
#endif
Secondary->VolDo->NetdiskEnableMode = NETDISK_SECONDARY2PRIMARY;
tempIrpContext = &tempIrpContext2;
RtlZeroMemory( tempIrpContext, sizeof(IRP_CONTEXT) );
SetFlag( tempIrpContext->Flags, IRP_CONTEXT_FLAG_WAIT );
SetFlag( tempIrpContext->NdasFatFlags, NDAS_FAT_IRP_CONTEXT_FLAG_SECONDARY_CONTEXT );
tempIrpContext->MajorFunction = IRP_MJ_FILE_SYSTEM_CONTROL;
tempIrpContext->MinorFunction = IRP_MN_MOUNT_VOLUME;
tempIrpContext->Vcb = vcb;
SetFlag( Secondary->Flags, SECONDARY_FLAG_REMOUNT_VOLUME );
try {
status = STATUS_UNSUCCESSFUL;
status = NdasFatMountVolume( tempIrpContext, vcb->TargetDeviceObject, vcb->Vpb, NULL );
} finally {
//FatCompleteRequest( tempIrpContext, NULL, 0 );
//ASSERT( IoGetTopLevelIrp() != (PIRP) &topLevelContext );
tempIrpContext = NULL;
}
//ObDereferenceObject( vcb->TargetDeviceObject );
//FatDebugTraceLevel = 0xFFFFFFFFFFFFFFFF;
//FatDebugTraceLevel |= DEBUG_TRACE_CREATE;
ClearFlag( Secondary->Flags, SECONDARY_FLAG_REMOUNT_VOLUME );
ASSERT( status == STATUS_SUCCESS );
ASSERT( !ExIsResourceAcquiredExclusiveLite(&FatData.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(&FatData.Resource) );
ASSERT( !ExIsResourceAcquiredExclusiveLite(&vcb->Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(&vcb->Resource) );
DebugTrace2( 0, Dbg2, ("Vcb->TargetDeviceObject->ReferenceCount = %X\n", vcb->TargetDeviceObject->ReferenceCount) );
DebugTrace2( 0, Dbg2, ("Vcb->Vpb->ReferenceCount = %X\n", vcb->Vpb->ReferenceCount) );
DebugTrace2( 0, Dbg2, ("Vcb->CloseCount = %d\n", vcb->OpenFileCount) );
#if 0
if (vcb->MftScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->MftScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->MftScb->Header.Resource) );
}
if (vcb->Mft2Scb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->Mft2Scb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->Mft2Scb->Header.Resource) );
}
if (vcb->LogFileScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->LogFileScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->LogFileScb->Header.Resource) );
}
if (vcb->VolumeDasdScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->VolumeDasdScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->VolumeDasdScb->Header.Resource) );
}
if (vcb->AttributeDefTableScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->AttributeDefTableScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->AttributeDefTableScb->Header.Resource) );
}
if (vcb->UpcaseTableScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->UpcaseTableScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->UpcaseTableScb->Header.Resource) );
}
if (vcb->RootIndexScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->RootIndexScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->RootIndexScb->Header.Resource) );
}
if (vcb->BitmapScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->BitmapScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->BitmapScb->Header.Resource) );
}
if (vcb->BadClusterFileScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->BadClusterFileScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->BadClusterFileScb->Header.Resource) );
}
if (vcb->MftBitmapScb) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->MftBitmapScb->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->MftBitmapScb->Header.Resource) );
}
if (vcb->SecurityDescriptorStream) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->SecurityDescriptorStream->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->SecurityDescriptorStream->Header.Resource) );
}
if (vcb->UsnJournal) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->UsnJournal->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->UsnJournal->Header.Resource) );
}
if (vcb->ExtendDirectory) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->ExtendDirectory->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->ExtendDirectory->Header.Resource) );
}
if (vcb->SecurityDescriptorHashIndex) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->SecurityDescriptorHashIndex->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->SecurityDescriptorHashIndex->Header.Resource) );
}
if (vcb->SecurityIdIndex) {
ASSERT( !ExIsResourceAcquiredExclusiveLite(vcb->SecurityIdIndex->Header.Resource) );
ASSERT( !ExIsResourceAcquiredSharedLite(vcb->SecurityIdIndex->Header.Resource) );
}
#endif
}
status = ((PVOLUME_DEVICE_OBJECT) FatData.DiskFileSystemDeviceObject)->
NdfsCallback.QueryPrimaryAddress( &Secondary->VolDo->NetdiskPartitionInformation, &Secondary->PrimaryAddress, &isLocalAddress );
DebugTrace2( 0, Dbg2, ("RecoverSession: LfsTable_QueryPrimaryAddress status = %X\n", status) );
if (status == STATUS_SUCCESS && !(Secondary->VolDo->NetdiskEnableMode == NETDISK_SECONDARY && isLocalAddress)) {
DebugTrace2( 0, Dbg, ("SecondaryRecoverySessionStart: Found PrimaryAddress :%02x:%02x:%02x:%02x:%02x:%02x/%d\n",
Secondary->PrimaryAddress.Node[0],
Secondary->PrimaryAddress.Node[1],
Secondary->PrimaryAddress.Node[2],
Secondary->PrimaryAddress.Node[3],
Secondary->PrimaryAddress.Node[4],
Secondary->PrimaryAddress.Node[5],
NTOHS(Secondary->PrimaryAddress.Port)) );
} else {
//ASSERT( FALSE );
continue;
}
KeInitializeEvent( &Secondary->ReadyEvent, NotificationEvent, FALSE );
KeInitializeEvent( &Secondary->RequestEvent, NotificationEvent, FALSE );
InitializeObjectAttributes(&objectAttributes, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
status = PsCreateSystemThread( &Secondary->ThreadHandle,
THREAD_ALL_ACCESS,
&objectAttributes,
NULL,
NULL,
SecondaryThreadProc,
Secondary );
if (!NT_SUCCESS(status)) {
ASSERT( NDASFAT_UNEXPECTED );
break;
}
status = ObReferenceObjectByHandle( Secondary->ThreadHandle,
FILE_READ_DATA,
NULL,
KernelMode,
&Secondary->ThreadObject,
NULL );
if (!NT_SUCCESS(status)) {
ASSERT (NDASFAT_INSUFFICIENT_RESOURCES );
break;
}
timeOut.QuadPart = -NDASFAT_TIME_OUT;
status = KeWaitForSingleObject( &Secondary->ReadyEvent,
Executive,
KernelMode,
FALSE,
&timeOut );
if (status != STATUS_SUCCESS) {
ASSERT( NDASFAT_BUG );
break;
}
KeClearEvent( &Secondary->ReadyEvent );
InterlockedIncrement( &Secondary->SessionId );
ExAcquireFastMutex( &Secondary->FastMutex );
if (!FlagOn(Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_START) || FlagOn(Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_STOPED)) {
ExReleaseFastMutex( &Secondary->FastMutex );
if (Secondary->Thread.SessionStatus == STATUS_DISK_CORRUPT_ERROR) {
status = STATUS_SUCCESS;
break;
}
timeOut.QuadPart = -NDASFAT_TIME_OUT;
status = KeWaitForSingleObject( Secondary->ThreadObject,
Executive,
KernelMode,
FALSE,
&timeOut );
if (status != STATUS_SUCCESS) {
ASSERT( NDASFAT_BUG );
return status;
}
DebugTrace2( 0, Dbg, ("Secondary_Stop: thread stoped\n") );
ObDereferenceObject( Secondary->ThreadObject );
Secondary->ThreadHandle = 0;
Secondary->ThreadObject = 0;
RtlZeroMemory( &Secondary->Thread.Flags, sizeof(SECONDARY) - FIELD_OFFSET(SECONDARY, Thread.Flags) );
continue;
}
ExReleaseFastMutex( &Secondary->FastMutex );
status = STATUS_SUCCESS;
DebugTrace2( 0, Dbg2, ("SecondaryRecoverySession Success Secondary = %p\n", Secondary) );
break;
}
NTSTATUS
FatCommonSetVolumeInfo (
IN PIRP_CONTEXT IrpContext,
IN PIRP Irp
)
/*++
Routine Description:
This is the common routine for setting Volume Information called by both
the fsd and fsp threads.
Arguments:
Irp - Supplies the Irp being processed
Return Value:
NTSTATUS - The return status for the operation
--*/
{
NTSTATUS Status;
PIO_STACK_LOCATION IrpSp;
PVCB Vcb;
PFCB Fcb;
PCCB Ccb;
TYPE_OF_OPEN TypeOfOpen;
ULONG Length;
FS_INFORMATION_CLASS FsInformationClass;
PVOID Buffer;
//
// Get the current stack location
//
IrpSp = IoGetCurrentIrpStackLocation( Irp );
DebugTrace(+1, Dbg, "FatCommonSetVolumeInfo...\n", 0);
DebugTrace( 0, Dbg, "Irp = %08lx\n", Irp );
DebugTrace( 0, Dbg, "->Length = %08lx\n", IrpSp->Parameters.SetVolume.Length);
DebugTrace( 0, Dbg, "->FsInformationClass = %08lx\n", IrpSp->Parameters.SetVolume.FsInformationClass);
DebugTrace( 0, Dbg, "->Buffer = %08lx\n", Irp->AssociatedIrp.SystemBuffer);
//
// Reference our input parameters to make things easier
//
Length = IrpSp->Parameters.SetVolume.Length;
FsInformationClass = IrpSp->Parameters.SetVolume.FsInformationClass;
Buffer = Irp->AssociatedIrp.SystemBuffer;
//
// Decode the file object to get the Vcb
//
TypeOfOpen = FatDecodeFileObject( IrpSp->FileObject, &Vcb, &Fcb, &Ccb );
if (TypeOfOpen != UserVolumeOpen) {
FatCompleteRequest( IrpContext, Irp, STATUS_ACCESS_DENIED );
DebugTrace(-1, Dbg, "FatCommonSetVolumeInfo -> STATUS_ACCESS_DENIED\n", 0);
return STATUS_ACCESS_DENIED;
}
//
// Acquire exclusive access to the Vcb and enqueue the Irp if we didn't
// get access
//
if (!FatAcquireExclusiveVcb( IrpContext, Vcb )) {
DebugTrace(0, Dbg, "Cannot acquire Vcb\n", 0);
Status = FatFsdPostRequest( IrpContext, Irp );
DebugTrace(-1, Dbg, "FatCommonSetVolumeInfo -> %08lx\n", Status );
return Status;
}
try {
//
// Make sure the vcb is in a usable condition. This will raise
// and error condition if the volume is unusable
//
// Also verify the Root Dcb since we need info from there.
//
FatVerifyFcb( IrpContext, Vcb->RootDcb );
//
// Based on the information class we'll do different actions. Each
// of the procedures that we're calling performs the action if
// possible and returns true if it successful and false if it couldn't
// wait for any I/O to complete.
//
switch (FsInformationClass) {
case FileFsLabelInformation:
Status = FatSetFsLabelInfo( IrpContext, Vcb, Buffer );
break;
default:
Status = STATUS_INVALID_PARAMETER;
break;
}
FatUnpinRepinnedBcbs( IrpContext );
} finally {
DebugUnwind( FatCommonSetVolumeInfo );
FatReleaseVcb( IrpContext, Vcb );
if (!AbnormalTermination()) {
FatCompleteRequest( IrpContext, Irp, Status );
}
DebugTrace(-1, Dbg, "FatCommonSetVolumeInfo -> %08lx\n", Status);
}
return Status;
}