NTSTATUS
FatCommonClose (
IN PVCB Vcb,
IN PFCB Fcb,
IN PCCB Ccb,
IN TYPE_OF_OPEN TypeOfOpen,
IN BOOLEAN Wait,
IN BOOLEAN TopLevel,
OUT PBOOLEAN VcbDeleted OPTIONAL
)
/*++
Routine Description:
This is the common routine for closing a file/directory called by both
the fsd and fsp threads.
Close is invoked whenever the last reference to a file object is deleted.
Cleanup is invoked when the last handle to a file object is closed, and
is called before close.
The function of close is to completely tear down and remove the fcb/dcb/ccb
structures associated with the file object.
Arguments:
Fcb - Supplies the file to process.
Wait - If this is TRUE we are allowed to block for the Vcb, if FALSE
then we must try to acquire the Vcb anyway.
TopLevel - If this is TRUE this is a top level request.
VcbDeleted - Returns whether the VCB was deleted by this call.
Return Value:
NTSTATUS - The return status for the operation
--*/
{
NTSTATUS Status = STATUS_SUCCESS;
PDCB ParentDcb;
BOOLEAN RecursiveClose;
BOOLEAN LocalVcbDeleted;
IRP_CONTEXT IrpContext;
PAGED_CODE();
DebugTrace(+1, Dbg, "FatCommonClose...\n", 0);
//
// Initailize the callers variable, if needed.
//
LocalVcbDeleted = FALSE;
if (ARGUMENT_PRESENT( VcbDeleted )) {
*VcbDeleted = LocalVcbDeleted;
}
//
// Special case the unopened file object
//
if (TypeOfOpen == UnopenedFileObject) {
DebugTrace(0, Dbg, "Close unopened file object\n", 0);
Status = STATUS_SUCCESS;
DebugTrace(-1, Dbg, "FatCommonClose -> %08lx\n", Status);
return Status;
}
//
// Set up our stack IrpContext.
//
RtlZeroMemory( &IrpContext, sizeof(IRP_CONTEXT) );
IrpContext.NodeTypeCode = FAT_NTC_IRP_CONTEXT;
IrpContext.NodeByteSize = sizeof( IrpContext );
IrpContext.MajorFunction = IRP_MJ_CLOSE;
IrpContext.Vcb = Vcb;
if (Wait) {
SetFlag( IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT );
}
//
// Acquire exclusive access to the Vcb and enqueue the irp if we didn't
// get access.
//
#pragma prefast( suppress: 28137, "prefast wants Wait to be a constant, but that's not possible for fastfat" )
if (!ExAcquireResourceExclusiveLite( &Vcb->Resource, Wait )) {
return STATUS_PENDING;
}
//
// The following test makes sure that we don't blow away an Fcb if we
// are trying to do a Supersede/Overwrite open above us. This test
// does not apply for the EA file.
//
if (FlagOn(Vcb->VcbState, VCB_STATE_FLAG_CREATE_IN_PROGRESS) &&
Vcb->EaFcb != Fcb) {
ExReleaseResourceLite( &Vcb->Resource );
return STATUS_PENDING;
}
//
// Setting the following flag prevents recursive closes of directory file
// objects, which are handled in a special case loop.
//
if ( FlagOn(Vcb->VcbState, VCB_STATE_FLAG_CLOSE_IN_PROGRESS) ) {
RecursiveClose = TRUE;
} else {
SetFlag(Vcb->VcbState, VCB_STATE_FLAG_CLOSE_IN_PROGRESS);
RecursiveClose = FALSE;
//
// Since we are at the top of the close chain, we need to add
// a reference to the VCB. This will keep it from going away
// on us until we are ready to check for a dismount below.
//
Vcb->OpenFileCount += 1;
}
try {
//
// Case on the type of open that we are trying to close.
//
switch (TypeOfOpen) {
case VirtualVolumeFile:
DebugTrace(0, Dbg, "Close VirtualVolumeFile\n", 0);
//
// Remove this internal, residual open from the count.
//
InterlockedDecrement( (LONG*)&(Vcb->InternalOpenCount) );
InterlockedDecrement( (LONG*)&(Vcb->ResidualOpenCount) );
try_return( Status = STATUS_SUCCESS );
break;
case UserVolumeOpen:
DebugTrace(0, Dbg, "Close UserVolumeOpen\n", 0);
Vcb->DirectAccessOpenCount -= 1;
Vcb->OpenFileCount -= 1;
if (FlagOn(Ccb->Flags, CCB_FLAG_READ_ONLY)) { Vcb->ReadOnlyCount -= 1; }
FatDeleteCcb( &IrpContext, &Ccb );
try_return( Status = STATUS_SUCCESS );
break;
case EaFile:
DebugTrace(0, Dbg, "Close EaFile\n", 0);
//
// Remove this internal, residual open from the count.
//
InterlockedDecrement( (LONG*)&(Vcb->InternalOpenCount) );
InterlockedDecrement( (LONG*)&(Vcb->ResidualOpenCount) );
try_return( Status = STATUS_SUCCESS );
break;
case DirectoryFile:
DebugTrace(0, Dbg, "Close DirectoryFile\n", 0);
InterlockedDecrement( (LONG*)&Fcb->Specific.Dcb.DirectoryFileOpenCount );
//
// Remove this internal open from the count.
//
InterlockedDecrement( (LONG*)&(Vcb->InternalOpenCount) );
//
// If this is the root directory, it is a residual open
// as well.
//
if (NodeType( Fcb ) == FAT_NTC_ROOT_DCB) {
InterlockedDecrement( (LONG*)&(Vcb->ResidualOpenCount) );
}
//
// If this is a recursive close, just return here.
//
if ( RecursiveClose ) {
try_return( Status = STATUS_SUCCESS );
} else {
break;
}
case UserDirectoryOpen:
case UserFileOpen:
DebugTrace(0, Dbg, "Close UserFileOpen/UserDirectoryOpen\n", 0);
//
// Uninitialize the cache map if we no longer need to use it
//
if ((NodeType(Fcb) == FAT_NTC_DCB) &&
IsListEmpty(&Fcb->Specific.Dcb.ParentDcbQueue) &&
(Fcb->OpenCount == 1) &&
(Fcb->Specific.Dcb.DirectoryFile != NULL)) {
PFILE_OBJECT DirectoryFileObject = Fcb->Specific.Dcb.DirectoryFile;
DebugTrace(0, Dbg, "Uninitialize the stream file object\n", 0);
CcUninitializeCacheMap( DirectoryFileObject, NULL, NULL );
//
// Dereference the directory file. This may cause a close
// Irp to be processed, so we need to do this before we destory
// the Fcb.
//
Fcb->Specific.Dcb.DirectoryFile = NULL;
ObDereferenceObject( DirectoryFileObject );
}
Fcb->OpenCount -= 1;
Vcb->OpenFileCount -= 1;
if (FlagOn(Ccb->Flags, CCB_FLAG_READ_ONLY)) { Vcb->ReadOnlyCount -= 1; }
FatDeleteCcb( &IrpContext, &Ccb );
break;
default:
#pragma prefast( suppress: 28159, "if the type of open is unknown, we seriously messed up." )
FatBugCheck( TypeOfOpen, 0, 0 );
}
//
// At this point we've cleaned up any on-disk structure that needs
// to be done, and we can now update the in-memory structures.
// Now if this is an unreferenced FCB or if it is
// an unreferenced DCB (not the root) then we can remove
// the fcb and set our ParentDcb to non null.
//
if (((NodeType(Fcb) == FAT_NTC_FCB) &&
(Fcb->OpenCount == 0))
||
((NodeType(Fcb) == FAT_NTC_DCB) &&
(IsListEmpty(&Fcb->Specific.Dcb.ParentDcbQueue)) &&
(Fcb->OpenCount == 0) &&
(Fcb->Specific.Dcb.DirectoryFileOpenCount == 0))) {
ParentDcb = Fcb->ParentDcb;
SetFlag( Vcb->VcbState, VCB_STATE_FLAG_DELETED_FCB );
FatDeleteFcb( &IrpContext, &Fcb );
//
// Uninitialize our parent's cache map if we no longer need
// to use it.
//
while ((NodeType(ParentDcb) == FAT_NTC_DCB) &&
IsListEmpty(&ParentDcb->Specific.Dcb.ParentDcbQueue) &&
(ParentDcb->OpenCount == 0) &&
(ParentDcb->Specific.Dcb.DirectoryFile != NULL)) {
PFILE_OBJECT DirectoryFileObject;
DirectoryFileObject = ParentDcb->Specific.Dcb.DirectoryFile;
DebugTrace(0, Dbg, "Uninitialize our parent Stream Cache Map\n", 0);
CcUninitializeCacheMap( DirectoryFileObject, NULL, NULL );
ParentDcb->Specific.Dcb.DirectoryFile = NULL;
ObDereferenceObject( DirectoryFileObject );
//
// Now, if the ObDereferenceObject() caused the final close
// to come in, then blow away the Fcb and continue up,
// otherwise wait for Mm to to dereference its file objects
// and stop here..
//
if ( ParentDcb->Specific.Dcb.DirectoryFileOpenCount == 0) {
PDCB CurrentDcb;
CurrentDcb = ParentDcb;
ParentDcb = CurrentDcb->ParentDcb;
SetFlag( Vcb->VcbState, VCB_STATE_FLAG_DELETED_FCB );
FatDeleteFcb( &IrpContext, &CurrentDcb );
} else {
break;
}
}
}
Status = STATUS_SUCCESS;
try_exit: NOTHING;
} finally {
DebugUnwind( FatCommonClose );
//
// We are done processing the close. If we are the top of the close
// chain, see if the VCB can go away. We have biased the open count by
// one, so we need to take that into account.
//
if (!RecursiveClose) {
//
// See if there is only one open left. If so, it is ours. We only want
// to check for a dismount if a dismount is not already in progress.
// We also only do this if the Vcb condition is not VcbGood and the
// caller can handle the VCB going away. This is determined by whether
// they passed in the VcbDeleted argument. This request also needs
// to be top level.
//
if (Vcb->OpenFileCount == 1 &&
Vcb->VcbCondition != VcbGood &&
!FlagOn( Vcb->VcbState, VCB_STATE_FLAG_DISMOUNT_IN_PROGRESS ) &&
ARGUMENT_PRESENT( VcbDeleted ) &&
TopLevel) {
//
// We need the global lock, which must be acquired before the
// VCB. Since we already have the VCB, we have to drop and
// reaquire here. Note that we always want to wait from this
// point on. Note that the VCB cannot go away, since we have
// biased the open file count.
//
FatReleaseVcb( &IrpContext,
Vcb );
SetFlag( IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT );
#pragma prefast( suppress: 28137, "prefast wants the wait parameter in this macro expansion to be a constant, unfortunately this is not possible" )
FatAcquireExclusiveGlobal( &IrpContext );
FatAcquireExclusiveVcb( &IrpContext,
Vcb );
//
// We have our locks in the correct order. Remove our
// extra open and check for a dismount. Note that if
// something changed while we dropped the lock, it will
// not matter, since the dismount code does the correct
// checks to make sure the volume can really go away.
//
Vcb->OpenFileCount -= 1;
LocalVcbDeleted = FatCheckForDismount( &IrpContext,
Vcb,
FALSE );
FatReleaseGlobal( &IrpContext );
//
// Let the caller know what happened, if they want this information.
//
if (ARGUMENT_PRESENT( VcbDeleted )) {
*VcbDeleted = LocalVcbDeleted;
}
} else {
//
// The volume cannot go away now. Just remove our extra reference.
//
Vcb->OpenFileCount -= 1;
}
//
// If the VCB is still around, clear our recursion flag.
//
if (!LocalVcbDeleted) {
ClearFlag( Vcb->VcbState, VCB_STATE_FLAG_CLOSE_IN_PROGRESS );
}
}
//
// Only release the VCB if it did not go away.
//
if (!LocalVcbDeleted) {
FatReleaseVcb( &IrpContext, Vcb );
}
DebugTrace(-1, Dbg, "FatCommonClose -> %08lx\n", Status);
}
return Status;
}
NTSTATUS
FatCommonClose (
IN PVCB Vcb,
IN PFCB Fcb,
IN PCCB Ccb,
IN TYPE_OF_OPEN TypeOfOpen,
IN BOOLEAN Wait,
OUT PBOOLEAN VcbDeleted OPTIONAL
)
/*++
Routine Description:
This is the common routine for closing a file/directory called by both
the fsd and fsp threads.
Close is invoked whenever the last reference to a file object is deleted.
Cleanup is invoked when the last handle to a file object is closed, and
is called before close.
The function of close is to completely tear down and remove the fcb/dcb/ccb
structures associated with the file object.
Arguments:
Fcb - Supplies the file to process.
Wait - If this is TRUE we are allowed to block for the Vcb, if FALSE
then we must try to acquire the Vcb anyway.
VcbDeleted - Returns whether the VCB was deleted by this call.
Return Value:
NTSTATUS - The return status for the operation
--*/
{
NTSTATUS Status;
PDCB ParentDcb;
BOOLEAN RecursiveClose;
BOOLEAN LocalVcbDeleted;
IRP_CONTEXT IrpContext;
#if __NDAS_FAT_SECONDARY__
BOOLEAN volDoResourceAcquired = FALSE;
BOOLEAN send2Primary = FALSE;
BOOLEAN volDoCcb = FALSE;
_U64 primaryFileHandle;
PVOLUME_DEVICE_OBJECT volDo = CONTAINING_RECORD( Vcb, VOLUME_DEVICE_OBJECT, Vcb );
BOOLEAN volDoSessionResourceAcquired = FALSE;
PSECONDARY_REQUEST secondaryRequest = NULL;
PNDFS_REQUEST_HEADER ndfsRequestHeader;
PNDFS_WINXP_REQUEST_HEADER ndfsWinxpRequestHeader;
PNDFS_WINXP_REPLY_HEADER ndfsWinxpReplytHeader;
LARGE_INTEGER timeOut;
#endif
PAGED_CODE();
DebugTrace(+1, Dbg, "FatCommonClose...\n", 0);
//
// Initailize the callers variable, if needed.
//
LocalVcbDeleted = FALSE;
if (ARGUMENT_PRESENT( VcbDeleted )) {
*VcbDeleted = LocalVcbDeleted;
}
//
// Special case the unopened file object
//
if (TypeOfOpen == UnopenedFileObject) {
DebugTrace(0, Dbg, "Close unopened file object\n", 0);
Status = STATUS_SUCCESS;
DebugTrace(-1, Dbg, "FatCommonClose -> %08lx\n", Status);
return Status;
}
//
// Set up our stack IrpContext.
//
RtlZeroMemory( &IrpContext, sizeof(IRP_CONTEXT) );
IrpContext.NodeTypeCode = FAT_NTC_IRP_CONTEXT;
IrpContext.NodeByteSize = sizeof( IrpContext );
IrpContext.MajorFunction = IRP_MJ_CLOSE;
IrpContext.Vcb = Vcb;
if (Wait) {
SetFlag( IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT );
}
#if __NDAS_FAT_SECONDARY__
if (Fcb && FlagOn(Fcb->NdasFatFlags, ND_FAT_FCB_FLAG_SECONDARY))
SetFlag( IrpContext.NdasFatFlags, NDAS_FAT_IRP_CONTEXT_FLAG_SECONDARY_CONTEXT );
if (Fcb && FlagOn(Fcb->NdasFatFlags, ND_FAT_FCB_FLAG_SECONDARY)) {
if (!FlagOn(IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT)) {
return STATUS_PENDING;
}
volDoResourceAcquired =
SecondaryAcquireResourceSharedStarveExclusiveLite( &IrpContext,
&volDo->Resource,
BooleanFlagOn(IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT) );
if (volDoResourceAcquired == FALSE) {
ASSERT( FlagOn(volDo->Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_REMOTE_DISCONNECTED) ); // It's not always garented continue;
return STATUS_PENDING;
}
}
if (volDo->NetdiskEnableMode == NETDISK_SECONDARY &&
!FlagOn(volDo->NetdiskPartitionInformation.Flags, NETDISK_PARTITION_INFORMATION_FLAG_INDIRECT)) {
if (TypeOfOpen == VirtualVolumeFile || TypeOfOpen == DirectoryFile) {
SetFlag( IrpContext.NdasFatFlags, NDAS_FAT_IRP_CONTEXT_FLAG_SECONDARY_CONTEXT );
}
}
#endif
//
// Acquire exclusive access to the Vcb and enqueue the irp if we didn't
// get access.
//
#if __NDAS_FAT_SECONDARY__
if (!(FlagOn(IrpContext.NdasFatFlags, NDAS_FAT_IRP_CONTEXT_FLAG_SECONDARY_CONTEXT) ?
ExAcquireResourceExclusiveLite( &Vcb->SecondaryResource, Wait ) : ExAcquireResourceExclusiveLite( &Vcb->Resource, Wait ))) {
if (volDoResourceAcquired) {
ASSERT( ExIsResourceAcquiredSharedLite(&volDo->Resource) );
SecondaryReleaseResourceLite( NULL, &volDo->Resource );
}
return STATUS_PENDING;
}
#else
if (!ExAcquireResourceExclusiveLite( &Vcb->Resource, Wait )) {
return STATUS_PENDING;
}
#endif
//
// The following test makes sure that we don't blow away an Fcb if we
// are trying to do a Supersede/Overwrite open above us. This test
// does not apply for the EA file.
//
if (FlagOn(Vcb->VcbState, VCB_STATE_FLAG_CREATE_IN_PROGRESS) &&
Vcb->EaFcb != Fcb) {
#if __NDAS_FAT_SECONDARY__
if (FlagOn(IrpContext.NdasFatFlags, NDAS_FAT_IRP_CONTEXT_FLAG_SECONDARY_CONTEXT))
ExReleaseResourceLite( &Vcb->SecondaryResource );
else
ExReleaseResourceLite( &Vcb->Resource );
if (volDoResourceAcquired) {
ASSERT( ExIsResourceAcquiredSharedLite(&volDo->Resource) );
SecondaryReleaseResourceLite( NULL, &volDo->Resource );
}
#else
ExReleaseResourceLite( &Vcb->Resource );
#endif
return STATUS_PENDING;
}
//
// Setting the following flag prevents recursive closes of directory file
// objects, which are handled in a special case loop.
//
if ( FlagOn(Vcb->VcbState, VCB_STATE_FLAG_CLOSE_IN_PROGRESS) ) {
RecursiveClose = TRUE;
} else {
SetFlag(Vcb->VcbState, VCB_STATE_FLAG_CLOSE_IN_PROGRESS);
RecursiveClose = FALSE;
//
// Since we are at the top of the close chain, we need to add
// a reference to the VCB. This will keep it from going away
// on us until we are ready to check for a dismount below.
//
Vcb->OpenFileCount += 1;
}
try {
//
// Case on the type of open that we are trying to close.
//
switch (TypeOfOpen) {
case VirtualVolumeFile:
DebugTrace(0, Dbg, "Close VirtualVolumeFile\n", 0);
//
// Remove this internal, residual open from the count.
//
InterlockedDecrement( &(Vcb->InternalOpenCount) );
InterlockedDecrement( &(Vcb->ResidualOpenCount) );
try_return( Status = STATUS_SUCCESS );
break;
case UserVolumeOpen:
DebugTrace(0, Dbg, "Close UserVolumeOpen\n", 0);
#if __NDAS_FAT_SECONDARY__
if (Fcb && FlagOn(Fcb->NdasFatFlags, ND_FAT_FCB_FLAG_SECONDARY)) {
volDoCcb = TRUE;
if (FlagOn(Ccb->NdasFatFlags, ND_FAT_CCB_FLAG_UNOPENED)) {
if ( FlagOn(Ccb->NdasFatFlags, ND_FAT_CCB_FLAG_CORRUPTED) )
Fcb->CorruptedCcbCloseCount --;
send2Primary = FALSE;
} else
send2Primary = TRUE;
primaryFileHandle = Ccb->PrimaryFileHandle;
ExAcquireFastMutex( &volDo->Secondary->RecoveryCcbQMutex );
RemoveEntryList( &Ccb->ListEntry );
ExReleaseFastMutex( &volDo->Secondary->RecoveryCcbQMutex );
InitializeListHead( &Ccb->ListEntry );
Ccb->FileObject = NULL;
if (Ccb->Buffer)
ExFreePool( Ccb->Buffer );
Ccb->FileObject = NULL;
InterlockedDecrement( &Vcb->SecondaryOpenFileCount );
} else {
Vcb->DirectAccessOpenCount -= 1;
Vcb->OpenFileCount -= 1;
if (FlagOn(Ccb->Flags, CCB_FLAG_READ_ONLY)) { Vcb->ReadOnlyCount -= 1; }
}
if (FlagOn(Ccb->NdasFatFlags, ND_FAT_CCB_FLAG_OPEN_BY_PRIMARY_SESSION)) {
InterlockedDecrement( &Vcb->PrimaryOpenFileCount );
}
FatDeleteCcb( &IrpContext, &Ccb );
if (Fcb && FlagOn(Fcb->NdasFatFlags, ND_FAT_FCB_FLAG_SECONDARY)) {
InterlockedDecrement( &Fcb->OpenCount );
if (Fcb->OpenCount == 0) {
ExAcquireFastMutex( &volDo->Secondary->FcbQMutex );
RemoveEntryList( &Fcb->ListEntry );
InitializeListHead( &Fcb->ListEntry );
ExReleaseFastMutex( &volDo->Secondary->FcbQMutex );
Fcb->Header.NodeTypeCode = FAT_NTC_FCB;
FatDeleteFcb( &IrpContext, &Fcb );
Secondary_Dereference( volDo->Secondary );
}
} else {
try_return( Status = STATUS_SUCCESS );
}
#else
Vcb->DirectAccessOpenCount -= 1;
Vcb->OpenFileCount -= 1;
if (FlagOn(Ccb->Flags, CCB_FLAG_READ_ONLY)) { Vcb->ReadOnlyCount -= 1; }
FatDeleteCcb( &IrpContext, &Ccb );
try_return( Status = STATUS_SUCCESS );
#endif
break;
case EaFile:
DebugTrace(0, Dbg, "Close EaFile\n", 0);
//
// Remove this internal, residual open from the count.
//
InterlockedDecrement( &(Vcb->InternalOpenCount) );
InterlockedDecrement( &(Vcb->ResidualOpenCount) );
try_return( Status = STATUS_SUCCESS );
break;
case DirectoryFile:
DebugTrace(0, Dbg, "Close DirectoryFile\n", 0);
InterlockedDecrement( &Fcb->Specific.Dcb.DirectoryFileOpenCount );
//
// Remove this internal open from the count.
//
InterlockedDecrement( &(Vcb->InternalOpenCount) );
//
// If this is the root directory, it is a residual open
// as well.
//
if (NodeType( Fcb ) == FAT_NTC_ROOT_DCB) {
InterlockedDecrement( &(Vcb->ResidualOpenCount) );
}
//
// If this is a recursive close, just return here.
//
if ( RecursiveClose ) {
try_return( Status = STATUS_SUCCESS );
} else {
break;
}
case UserDirectoryOpen:
case UserFileOpen:
DebugTrace(0, Dbg, "Close UserFileOpen/UserDirectoryOpen\n", 0);
//
// Uninitialize the cache map if we no longer need to use it
//
if ((NodeType(Fcb) == FAT_NTC_DCB) &&
IsListEmpty(&Fcb->Specific.Dcb.ParentDcbQueue) &&
(Fcb->OpenCount == 1) &&
(Fcb->Specific.Dcb.DirectoryFile != NULL)) {
PFILE_OBJECT DirectoryFileObject = Fcb->Specific.Dcb.DirectoryFile;
DebugTrace(0, Dbg, "Uninitialize the stream file object\n", 0);
CcUninitializeCacheMap( DirectoryFileObject, NULL, NULL );
//
// Dereference the directory file. This may cause a close
// Irp to be processed, so we need to do this before we destory
// the Fcb.
//
Fcb->Specific.Dcb.DirectoryFile = NULL;
ObDereferenceObject( DirectoryFileObject );
}
#if __NDAS_FAT__
if (TypeOfOpen == UserFileOpen) {
ExAcquireFastMutex( &Fcb->NonPaged->CcbQMutex );
Ccb->FileObject = NULL;
Ccb->Fcb = NULL;
RemoveEntryList( &Ccb->FcbListEntry );
InitializeListHead( &Ccb->FcbListEntry );
ExReleaseFastMutex( &Fcb->NonPaged->CcbQMutex );
}
#endif
Fcb->OpenCount -= 1;
#if __NDAS_FAT_SECONDARY__
if (Fcb && FlagOn(Fcb->NdasFatFlags, ND_FAT_FCB_FLAG_SECONDARY)) {
volDoCcb = TRUE;
if (FlagOn(Ccb->NdasFatFlags, ND_FAT_CCB_FLAG_UNOPENED)) {
if ( FlagOn(Ccb->NdasFatFlags, ND_FAT_CCB_FLAG_CORRUPTED) )
Fcb->CorruptedCcbCloseCount --;
send2Primary = FALSE;
} else
send2Primary = TRUE;
primaryFileHandle = Ccb->PrimaryFileHandle;
ExAcquireFastMutex( &volDo->Secondary->RecoveryCcbQMutex );
RemoveEntryList( &Ccb->ListEntry );
ExReleaseFastMutex( &volDo->Secondary->RecoveryCcbQMutex );
InitializeListHead( &Ccb->ListEntry );
Ccb->FileObject = NULL;
if (Ccb->Buffer)
ExFreePool( Ccb->Buffer );
InterlockedDecrement( &Vcb->SecondaryOpenFileCount );
Ccb->FileObject = NULL;
} else {
Vcb->OpenFileCount -= 1;
if (FlagOn(Ccb->Flags, CCB_FLAG_READ_ONLY)) { Vcb->ReadOnlyCount -= 1; }
}
if (FlagOn(Ccb->NdasFatFlags, ND_FAT_CCB_FLAG_OPEN_BY_PRIMARY_SESSION)) {
InterlockedDecrement( &Vcb->PrimaryOpenFileCount );
}
FatDeleteCcb( &IrpContext, &Ccb );
if (Fcb && FlagOn(Fcb->NdasFatFlags, ND_FAT_FCB_FLAG_SECONDARY)) {
if (Fcb->OpenCount == 0) {
ExAcquireFastMutex( &volDo->Secondary->FcbQMutex );
RemoveEntryList( &Fcb->ListEntry );
InitializeListHead( &Fcb->ListEntry );
ExReleaseFastMutex( &volDo->Secondary->FcbQMutex );
Fcb->Header.NodeTypeCode = FAT_NTC_FCB;
FatDeleteFcb( &IrpContext, &Fcb );
Secondary_Dereference( volDo->Secondary );
}
}
#else
Fcb->OpenCount -= 1;
Vcb->OpenFileCount -= 1;
if (FlagOn(Ccb->Flags, CCB_FLAG_READ_ONLY)) { Vcb->ReadOnlyCount -= 1; }
FatDeleteCcb( &IrpContext, &Ccb );
#endif
break;
default:
FatBugCheck( TypeOfOpen, 0, 0 );
}
#if __NDAS_FAT_SECONDARY__
if (send2Primary) {
Status = STATUS_SUCCESS;
volDoSessionResourceAcquired
= SecondaryAcquireResourceExclusiveLite( &IrpContext,
&volDo->SessionResource,
BooleanFlagOn(IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT) );
if (FlagOn(volDo->Secondary->Thread.Flags, SECONDARY_THREAD_FLAG_REMOTE_DISCONNECTED) ||
FlagOn(volDo->Secondary->Flags, SECONDARY_FLAG_RECONNECTING)) {
Status = STATUS_SUCCESS;
leave;
}
secondaryRequest = AllocateWinxpSecondaryRequest( volDo->Secondary, IRP_MJ_CLOSE, 0 );
if (secondaryRequest == NULL) {
ASSERT( FALSE );
leave;
}
ndfsRequestHeader = &secondaryRequest->NdfsRequestHeader;
INITIALIZE_NDFS_REQUEST_HEADER( ndfsRequestHeader, NDFS_COMMAND_EXECUTE, volDo->Secondary, IRP_MJ_CLOSE, 0 );
ndfsWinxpRequestHeader = (PNDFS_WINXP_REQUEST_HEADER)(ndfsRequestHeader+1);
ASSERT( ndfsWinxpRequestHeader == (PNDFS_WINXP_REQUEST_HEADER)secondaryRequest->NdfsRequestData );
//ndfsWinxpRequestHeader->IrpTag = (_U32)Fcb;
ndfsWinxpRequestHeader->IrpMajorFunction = IRP_MJ_CLOSE;
ndfsWinxpRequestHeader->IrpMinorFunction = 0;
ndfsWinxpRequestHeader->FileHandle = primaryFileHandle;
ndfsWinxpRequestHeader->IrpFlags = 0;
ndfsWinxpRequestHeader->IrpSpFlags = 0;
secondaryRequest->RequestType = SECONDARY_REQ_SEND_MESSAGE;
QueueingSecondaryRequest( volDo->Secondary, secondaryRequest );
timeOut.QuadPart = -NDASFAT_TIME_OUT;
Status = KeWaitForSingleObject( &secondaryRequest->CompleteEvent, Executive, KernelMode, FALSE, &timeOut );
KeClearEvent( &secondaryRequest->CompleteEvent );
if (Status != STATUS_SUCCESS) {
ASSERT( NDASFAT_BUG );
}
if (secondaryRequest->ExecuteStatus == STATUS_SUCCESS) {
ndfsWinxpReplytHeader = (PNDFS_WINXP_REPLY_HEADER)secondaryRequest->NdfsReplyData;
ASSERT( ndfsWinxpReplytHeader->Status == STATUS_SUCCESS );
leave;
}
ASSERT( secondaryRequest->ExecuteStatus != STATUS_SUCCESS );
}
if (volDoCcb == TRUE) {
Status = STATUS_SUCCESS;
leave;
}
#endif
//
// At this point we've cleaned up any on-disk structure that needs
// to be done, and we can now update the in-memory structures.
// Now if this is an unreferenced FCB or if it is
// an unreferenced DCB (not the root) then we can remove
// the fcb and set our ParentDcb to non null.
//
if (((NodeType(Fcb) == FAT_NTC_FCB) &&
(Fcb->OpenCount == 0))
||
((NodeType(Fcb) == FAT_NTC_DCB) &&
(IsListEmpty(&Fcb->Specific.Dcb.ParentDcbQueue)) &&
(Fcb->OpenCount == 0) &&
(Fcb->Specific.Dcb.DirectoryFileOpenCount == 0))) {
ParentDcb = Fcb->ParentDcb;
SetFlag( Vcb->VcbState, VCB_STATE_FLAG_DELETED_FCB );
FatDeleteFcb( &IrpContext, &Fcb );
//
// Uninitialize our parent's cache map if we no longer need
// to use it.
//
while ((NodeType(ParentDcb) == FAT_NTC_DCB) &&
IsListEmpty(&ParentDcb->Specific.Dcb.ParentDcbQueue) &&
(ParentDcb->OpenCount == 0) &&
(ParentDcb->Specific.Dcb.DirectoryFile != NULL)) {
PFILE_OBJECT DirectoryFileObject;
DirectoryFileObject = ParentDcb->Specific.Dcb.DirectoryFile;
DebugTrace(0, Dbg, "Uninitialize our parent Stream Cache Map\n", 0);
CcUninitializeCacheMap( DirectoryFileObject, NULL, NULL );
ParentDcb->Specific.Dcb.DirectoryFile = NULL;
ObDereferenceObject( DirectoryFileObject );
//
// Now, if the ObDereferenceObject() caused the final close
// to come in, then blow away the Fcb and continue up,
// otherwise wait for Mm to to dereference its file objects
// and stop here..
//
if ( ParentDcb->Specific.Dcb.DirectoryFileOpenCount == 0) {
PDCB CurrentDcb;
CurrentDcb = ParentDcb;
ParentDcb = CurrentDcb->ParentDcb;
SetFlag( Vcb->VcbState, VCB_STATE_FLAG_DELETED_FCB );
FatDeleteFcb( &IrpContext, &CurrentDcb );
} else {
break;
}
}
}
Status = STATUS_SUCCESS;
try_exit: NOTHING;
} finally {
DebugUnwind( FatCommonClose );
#if __NDAS_FAT_SECONDARY__
if (secondaryRequest)
DereferenceSecondaryRequest( secondaryRequest );
if (volDoSessionResourceAcquired) {
SecondaryReleaseResourceLite( &IrpContext, &volDo->SessionResource );
}
if (volDoResourceAcquired) {
ASSERT( ExIsResourceAcquiredSharedLite(&volDo->Resource) );
SecondaryReleaseResourceLite( NULL, &volDo->Resource );
}
#endif
//
// We are done processing the close. If we are the top of the close
// chain, see if the VCB can go away. We have biased the open count by
// one, so we need to take that into account.
//
if (!RecursiveClose) {
//
// See if there is only one open left. If so, it is ours. We only want
// to check for a dismount if a dismount is not already in progress.
// We also only do this if the caller can handle the VCB going away.
// This is determined by whether they passed in the VcbDeleted argument.
//
if (Vcb->OpenFileCount == 1 &&
!FlagOn( Vcb->VcbState, VCB_STATE_FLAG_DISMOUNT_IN_PROGRESS )
&& ARGUMENT_PRESENT( VcbDeleted )) {
//
// We need the global lock, which must be acquired before the
// VCB. Since we already have the VCB, we have to drop and
// reaquire here. Note that we always want to wait from this
// point on. Note that the VCB cannot go away, since we have
// biased the open file count.
//
FatReleaseVcb( &IrpContext,
Vcb );
SetFlag( IrpContext.Flags, IRP_CONTEXT_FLAG_WAIT );
FatAcquireExclusiveGlobal( &IrpContext );
FatAcquireExclusiveVcb( &IrpContext,
Vcb );
//
// We have our locks in the correct order. Remove our
// extra open and check for a dismount. Note that if
// something changed while we dropped the lock, it will
// not matter, since the dismount code does the correct
// checks to make sure the volume can really go away.
//
Vcb->OpenFileCount -= 1;
LocalVcbDeleted = FatCheckForDismount( &IrpContext,
Vcb,
FALSE );
FatReleaseGlobal( &IrpContext );
//
// Let the caller know what happened, if they want this information.
//
if (ARGUMENT_PRESENT( VcbDeleted )) {
*VcbDeleted = LocalVcbDeleted;
}
} else {
//
// The volume cannot go away now. Just remove our extra reference.
//
Vcb->OpenFileCount -= 1;
}
//
// If the VCB is still around, clear our recursion flag.
//
if (!LocalVcbDeleted) {
ClearFlag( Vcb->VcbState, VCB_STATE_FLAG_CLOSE_IN_PROGRESS );
}
}
//
// Only release the VCB if it did not go away.
//
if (!LocalVcbDeleted) {
FatReleaseVcb( &IrpContext, Vcb );
}
DebugTrace(-1, Dbg, "FatCommonClose -> %08lx\n", Status);
}
return Status;
}
