static NTSTATUS pnp_remove_device(PDEVICE_OBJECT DeviceObject) {
device_extension* Vcb = DeviceObject->DeviceExtension;
NTSTATUS Status;
ExAcquireResourceSharedLite(&Vcb->tree_lock, TRUE);
Status = send_disks_pnp_message(Vcb, IRP_MN_REMOVE_DEVICE);
if (!NT_SUCCESS(Status))
WARN("send_disks_pnp_message returned %08x\n", Status);
ExReleaseResourceLite(&Vcb->tree_lock);
if (DeviceObject->Vpb->Flags & VPB_MOUNTED) {
Status = FsRtlNotifyVolumeEvent(Vcb->root_file, FSRTL_VOLUME_DISMOUNT);
if (!NT_SUCCESS(Status)) {
WARN("FsRtlNotifyVolumeEvent returned %08x\n", Status);
}
if (Vcb->vde)
Vcb->vde->mounted_device = NULL;
ExAcquireResourceExclusiveLite(&Vcb->tree_lock, TRUE);
Vcb->removing = TRUE;
ExReleaseResourceLite(&Vcb->tree_lock);
if (Vcb->open_files == 0)
uninit(Vcb);
}
return STATUS_SUCCESS;
}
static
NTSTATUS
VfatDismountVolume(
PVFAT_IRP_CONTEXT IrpContext)
{
PDEVICE_EXTENSION DeviceExt;
PLIST_ENTRY NextEntry;
PVFATFCB Fcb;
PFILE_OBJECT FileObject;
DPRINT("VfatDismountVolume(%p)\n", IrpContext);
DeviceExt = IrpContext->DeviceExt;
FileObject = IrpContext->FileObject;
/* We HAVE to be locked. Windows also allows dismount with no lock
* but we're here mainly for 1st stage, so KISS
*/
if (!(DeviceExt->Flags & VCB_VOLUME_LOCKED))
{
return STATUS_ACCESS_DENIED;
}
/* Race condition? */
if (DeviceExt->Flags & VCB_DISMOUNT_PENDING)
{
return STATUS_VOLUME_DISMOUNTED;
}
/* Notify we'll dismount. Pass that point there's no reason we fail */
FsRtlNotifyVolumeEvent(IrpContext->Stack->FileObject, FSRTL_VOLUME_DISMOUNT);
ExAcquireResourceExclusiveLite(&DeviceExt->FatResource, TRUE);
/* Flush volume & files */
VfatFlushVolume(DeviceExt, (PVFATFCB)FileObject->FsContext);
/* Rebrowse the FCB in order to free them now */
while (!IsListEmpty(&DeviceExt->FcbListHead))
{
NextEntry = RemoveHeadList(&DeviceExt->FcbListHead);
Fcb = CONTAINING_RECORD(NextEntry, VFATFCB, FcbListEntry);
vfatDestroyFCB(Fcb);
}
/* Mark we're being dismounted */
DeviceExt->Flags |= VCB_DISMOUNT_PENDING;
ExReleaseResourceLite(&DeviceExt->FatResource);
/* Release a few resources and quit, we're done */
ExDeleteResourceLite(&DeviceExt->DirResource);
ExDeleteResourceLite(&DeviceExt->FatResource);
ObDereferenceObject(DeviceExt->FATFileObject);
return STATUS_SUCCESS;
}
NTSTATUS
CdCommonCleanup (
IN PIRP_CONTEXT IrpContext,
IN PIRP Irp
)
/*++
Routine Description:
This is the common routine for cleanup of a file/directory called by both
the fsd and fsp threads.
Cleanup is invoked whenever the last handle to a file object is closed.
This is different than the Close operation which is invoked when the last
reference to a file object is deleted.
The function of cleanup is to essentially "cleanup" the file/directory
after a user is done with it. The Fcb/Dcb remains around (because MM
still has the file object referenced) but is now available for another
user to open (i.e., as far as the user is concerned the is now closed).
See close for a more complete description of what close does.
We do no synchronization in this routine until we get to the point
where we modify the counts, share access and volume lock field.
We need to update the Fcb and Vcb to show that a user handle has been closed.
The following structures and fields are affected.
Vcb:
VolumeLockFileObject - Did the user lock the volume with this file object.
VcbState - Check if we are unlocking the volume here.
VcbCleanup - Count of outstanding handles on the volume.
DirNotifyQueue - If this file object has pending DirNotify Irps.
Fcb:
ShareAccess - If this is a user handle.
FcbCleanup - Count of outstanding handles on this Fcb.
Oplock - Any outstanding oplocks on this file object.
FileLock - Any outstanding filelocks on this file object.
Arguments:
Irp - Supplies the Irp to process
Return Value:
NTSTATUS - The return status for the operation.
--*/
{
PFILE_OBJECT FileObject;
TYPE_OF_OPEN TypeOfOpen;
BOOLEAN SendUnlockNotification = FALSE;
BOOLEAN AttemptTeardown;
PVCB Vcb;
PFCB Fcb;
PCCB Ccb;
KIRQL SavedIrql;
ASSERT_IRP_CONTEXT( IrpContext );
ASSERT_IRP( Irp );
//
// If we were called with our file system device object instead of a
// volume device object, just complete this request with STATUS_SUCCESS.
//
if (IrpContext->Vcb == NULL) {
CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
return STATUS_SUCCESS;
}
//
// Get the file object out of the Irp and decode the type of open.
//
FileObject = IoGetCurrentIrpStackLocation( Irp )->FileObject;
TypeOfOpen = CdDecodeFileObject( IrpContext,
FileObject,
&Fcb,
&Ccb );
//
// No work here for either an UnopenedFile object or a StreamFileObject.
//
if (TypeOfOpen <= StreamFileOpen) {
CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
return STATUS_SUCCESS;
}
//
// Keep a local pointer to the Vcb.
//
Vcb = Fcb->Vcb;
//
// Synchronise with reads while we set the cleanup complete
// flag on this fileobject. Once this flag is set, any further
// reads will be rejected (CdVerifyFcbOperation)
//
CdAcquireFileExclusive( IrpContext, Fcb);
//
// Set the flag in the FileObject to indicate that cleanup is complete.
//
SetFlag( FileObject->Flags, FO_CLEANUP_COMPLETE );
CdReleaseFile( IrpContext, Fcb);
//
// Acquire the current file.
//
CdAcquireFcbExclusive( IrpContext, Fcb, FALSE );
//
// Use a try-finally to facilitate cleanup.
//
try {
//
// Case on the type of open that we are trying to cleanup.
//
switch (TypeOfOpen) {
case UserDirectoryOpen:
//
// Check if we need to complete any dir notify Irps on this file object.
//
FsRtlNotifyCleanup( Vcb->NotifySync,
&Vcb->DirNotifyList,
Ccb );
break;
case UserFileOpen:
//
// Coordinate the cleanup operation with the oplock state.
// Oplock cleanup operations can always cleanup immediately so no
// need to check for STATUS_PENDING.
//
FsRtlCheckOplock( &Fcb->Oplock,
Irp,
IrpContext,
NULL,
NULL );
//
// Unlock all outstanding file locks.
//
if (Fcb->FileLock != NULL) {
FsRtlFastUnlockAll( Fcb->FileLock,
FileObject,
IoGetRequestorProcess( Irp ),
NULL );
}
//
// Cleanup the cache map.
//
CcUninitializeCacheMap( FileObject, NULL, NULL );
//
// Check the fast io state.
//
CdLockFcb( IrpContext, Fcb );
Fcb->IsFastIoPossible = CdIsFastIoPossible( Fcb );
CdUnlockFcb( IrpContext, Fcb );
break;
case UserVolumeOpen :
break;
default :
CdBugCheck( TypeOfOpen, 0, 0 );
}
//
// Now lock the Vcb in order to modify the fields in the in-memory
// structures.
//
CdLockVcb( IrpContext, Vcb );
//
// Decrement the cleanup counts in the Vcb and Fcb.
//
CdDecrementCleanupCounts( IrpContext, Fcb );
//
// If the cleanup count hit zero and the volume is not mounted, we
// will want to try to spark teardown.
//
AttemptTeardown = (Vcb->VcbCleanup == 0 && Vcb->VcbCondition == VcbNotMounted);
//
// If this file object has locked the volume then perform the unlock operation.
// We do this regardless of explicit or implicit (no share DASD open) lock.
//
if (FileObject == Vcb->VolumeLockFileObject) {
ASSERT( FlagOn( Vcb->VcbState, VCB_STATE_LOCKED));
IoAcquireVpbSpinLock( &SavedIrql );
ClearFlag( Vcb->Vpb->Flags, VPB_LOCKED);
ClearFlag( Vcb->VcbState, VCB_STATE_LOCKED );
Vcb->VolumeLockFileObject = NULL;
SendUnlockNotification = TRUE;
IoReleaseVpbSpinLock( SavedIrql );
}
CdUnlockVcb( IrpContext, Vcb );
//
// We must clean up the share access at this time, since we may not
// get a Close call for awhile if the file was mapped through this
// File Object.
//
IoRemoveShareAccess( FileObject, &Fcb->ShareAccess );
} finally {
CdReleaseFcb( IrpContext, Fcb );
if (SendUnlockNotification) {
FsRtlNotifyVolumeEvent( FileObject, FSRTL_VOLUME_UNLOCK );
}
}
//
// If appropriate, try to spark teardown by purging the volume. Should
// this very fileobject we were cleaning up be the last reason for the
// volume to remain, teardown will commence on completion of this Irp.
//
if (AttemptTeardown) {
CdAcquireVcbExclusive( IrpContext, Vcb, FALSE );
try {
CdPurgeVolume( IrpContext, Vcb, FALSE );
} finally {
CdReleaseVcb( IrpContext, Vcb );
}
}
//
// If this is a normal termination then complete the request
//
CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
return STATUS_SUCCESS;
}
NTSTATUS
xixfs_CommonClose(
IN PXIXFS_IRPCONTEXT pIrpContext
)
{
NTSTATUS RC = STATUS_SUCCESS;
PXIXFS_FCB pFCB = NULL;
PXIXFS_CCB pCCB = NULL;
PXIXFS_VCB pVCB = NULL;
PFILE_OBJECT pFileObject = NULL;
PIRP pIrp = NULL;
PIO_STACK_LOCATION pIrpSp = NULL;
BOOLEAN OpenVCB = FALSE;
BOOLEAN PotentialVCBUnmount = FALSE;
BOOLEAN CanWait = FALSE;
BOOLEAN ForceDismount = FALSE;
BOOLEAN bUserReference = FALSE;
TYPE_OF_OPEN TypeOfOpen = UnopenedFileObject;
BOOLEAN bVcbAcq = FALSE;
PAGED_CODE();
DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_IRPCONTEXT),
("Enter xixfs_CommonClose IrpContext(%p)\n", pIrpContext));
ASSERT_IRPCONTEXT(pIrpContext);
pIrp = pIrpContext->Irp;
ASSERT(pIrp);
// check if open request is releated to file system CDO
{
PDEVICE_OBJECT DeviceObject = pIrpContext->TargetDeviceObject;
ASSERT(DeviceObject);
if (DeviceObject == XiGlobalData.XifsControlDeviceObject) {
RC = STATUS_SUCCESS;
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_IRPCONTEXT),
("CDO Device Close DevObj(%p).\n", DeviceObject));
xixfs_CompleteRequest(pIrpContext,RC,0);
return(RC);
}
}
if(pIrpContext->VCB == NULL) {
DebugTrace(DEBUG_LEVEL_INFO, DEBUG_TARGET_CLOSE,
("pIrpContext->VCB == NULL.\n"));
RC = STATUS_SUCCESS;
xixfs_CompleteRequest(pIrpContext, RC, 0);
return RC;
}
CanWait = XIXCORE_TEST_FLAGS(pIrpContext->IrpContextFlags, XIFSD_IRP_CONTEXT_WAIT);
pIrpSp = IoGetCurrentIrpStackLocation(pIrp);
ASSERT(pIrpSp);
pFileObject = pIrpSp->FileObject;
ASSERT(pFileObject);
TypeOfOpen = xixfs_DecodeFileObject(pFileObject, &pFCB, &pCCB);
if(TypeOfOpen == UnopenedFileObject) {
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_IRPCONTEXT),
("TypeOfOpen <= StreamFileOpen.\n"));
xixfs_CompleteRequest(pIrpContext, STATUS_SUCCESS, 0);
return STATUS_SUCCESS;
}
if(TypeOfOpen == UserVolumeOpen) {
ForceDismount = XIXCORE_TEST_FLAGS( pCCB->CCBFlags, XIXFSD_CCB_DISMOUNT_ON_CLOSE);
if(ForceDismount) {
if(!CanWait) {
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_IRPCONTEXT),
("Force Dismount with Non Waitable Context.\n"));
RC = xixfs_PostRequest(pIrpContext, pIrp);
return RC;
}
}
}
DebugTrace(DEBUG_LEVEL_CRITICAL, DEBUG_TARGET_ALL,
("!!!!Close pCCB(%p) FileObject(%p)\n", pCCB, pFileObject));
ASSERT_FCB(pFCB);
pVCB = pFCB->PtrVCB;
ASSERT_VCB(pVCB);
if( (pVCB->VCBCleanup == 0)
&& (pVCB->VCBState != XIFSD_VCB_STATE_VOLUME_MOUNTED) )
{
if(!CanWait) {
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_IRPCONTEXT),
("Force Dismount with Non Waitable Context.\n"));
RC = xixfs_PostRequest(pIrpContext, pIrp);
return RC;
}
}
//
// Clean up any CCB associated with this open.
//
try {
if( ((TypeOfOpen == UserDirectoryOpen) || (TypeOfOpen == UserFileOpen) || (TypeOfOpen == UserVolumeOpen))
&& (pCCB != NULL)
) {
bUserReference = TRUE;
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLOSE|DEBUG_TARGET_CCB),
("XifsdCommonClose Delete CCB (%x)\n", pCCB));
// Test
//XifsdLockFcb(NULL, pFCB);
//RemoveEntryList(&pCCB->LinkToFCB);
//XifsdUnlockFcb(NULL, pFCB);
xixfs_FreeCCB( pCCB );
}
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLOSE|DEBUG_TARGET_REFCOUNT|DEBUG_TARGET_FCB|DEBUG_TARGET_VCB),
("XifsdCommonClose GenINFO Fcb LotNumber(%I64d) TypeOfOpen (%ld) Fcb %d/%d Vcb %d/%d \n",
pFCB->XixcoreFcb.LotNumber,
TypeOfOpen,
pFCB->FCBReference,
pFCB->FCBUserReference,
pVCB->VCBReference,
pVCB->VCBUserReference));
/*
if(CanWait){
if(TypeOfOpen == UserFileOpen){
if(pFCB->FCBCleanup == 0){
if(pFCB->SectionObject.DataSectionObject != NULL)
{
CcFlushCache(&(pFCB->SectionObject), NULL, 0, NULL);
CcPurgeCacheSection( &(pFCB->SectionObject),
NULL,
0,
FALSE
);
}
if(XIXCORE_TEST_FLAGS(pFCB->FCBFlags,XIXCORE_FCB_MODIFIED_FILE)){
xixfs_LastUpdateFileFromFCB(pFCB);
}
}
}
}
*/
if((pVCB->VCBState == XIFSD_VCB_STATE_VOLUME_MOUNTED)
&& ((TypeOfOpen == UserFileOpen) || (TypeOfOpen == UserDirectoryOpen))
&& (pFCB != pVCB->RootDirFCB))
{
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLOSE|DEBUG_TARGET_FCB),
("XifsdCommonClose Destroy FCB (%x)\n", pFCB));
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLOSE|DEBUG_TARGET_REFCOUNT|DEBUG_TARGET_FCB|DEBUG_TARGET_VCB),
("XifsdCommonClose, Fcb %08x Vcb %d/%d Fcb %d/%d\n", pFCB,
pVCB->VCBReference,
pVCB->VCBUserReference,
pFCB->FCBReference,
pFCB->FCBUserReference ));
xixfs_TryClose(CanWait, bUserReference, pFCB);
RC = STATUS_SUCCESS;
try_return(RC);
} else {
if( ((pVCB->VCBCleanup == 0) || ForceDismount)
&& (pVCB->VCBState != XIFSD_VCB_STATE_VOLUME_MOUNTED))
{
if(ForceDismount) {
FsRtlNotifyVolumeEvent(pFileObject, FSRTL_VOLUME_DISMOUNT);
}
if( ((pVCB->VCBCleanup == 0) || ForceDismount)
&& (pVCB->VCBState != XIFSD_VCB_STATE_VOLUME_MOUNTED))
{
PotentialVCBUnmount = TRUE;
if(bVcbAcq)XifsdReleaseVcb(TRUE,pVCB);
XifsdAcquireGData(pIrpContext);
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_RESOURCE),
("XifsdCommonClose Acquire exclusive GData(%p)\n", &XiGlobalData.DataResource));
bVcbAcq = XifsdAcquireVcbExclusive(TRUE,pVCB, FALSE);
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_VCB|DEBUG_TARGET_RESOURCE),
("XifsdCommonClose Acquire exclusive VCBResource(%p)\n", pVCB->VCBResource));
}
}
if(PotentialVCBUnmount && bVcbAcq) {
if(!xixfs_CheckForDismount(pIrpContext, pVCB, TRUE)) {
bVcbAcq = FALSE;
RC = STATUS_SUCCESS;
try_return(RC);
}
}
RC = xixfs_TryClose(CanWait, bUserReference, pFCB);
if(NT_SUCCESS(RC)) {
if(PotentialVCBUnmount && bVcbAcq) {
if(!xixfs_CheckForDismount(pIrpContext, pVCB, FALSE)) {
bVcbAcq = FALSE;
RC = STATUS_SUCCESS;
try_return(RC);
}
}
}
RC = STATUS_SUCCESS;
}
;
}
finally{
if(bVcbAcq) {
XifsdReleaseVcb(TRUE, pVCB);
}
if(PotentialVCBUnmount) {
XifsdReleaseGData(pIrpContext);
PotentialVCBUnmount = FALSE;
}
}
xixfs_CompleteRequest(pIrpContext, RC, 0);
DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_CLOSE| DEBUG_TARGET_IRPCONTEXT),
("Exit xixfs_CommonClose \n"));
return RC;
}
NTSTATUS
XixFsdCommonCleanUp(
IN PXIFS_IRPCONTEXT pIrpContext
)
{
NTSTATUS RC = STATUS_SUCCESS;
PXIFS_FCB pFCB = NULL;
PXIFS_CCB pCCB = NULL;
PXIFS_VCB pVCB = NULL;
PFILE_OBJECT pFileObject = NULL;
TYPE_OF_OPEN TypeOfOpen = UnopenedFileObject;
PIRP pIrp = NULL;
PIO_STACK_LOCATION pIrpSp = NULL;
KIRQL SavedIrql;
PXIFS_LCB pLCB = NULL;
PXIFS_FCB pParentFCB = NULL;
BOOLEAN Wait = FALSE;
BOOLEAN VCBAcquired = FALSE;
BOOLEAN ParentFCBAcquired = FALSE;
BOOLEAN CanWait = FALSE;
BOOLEAN AttemptTeardown = FALSE;
BOOLEAN SendUnlockNotification = FALSE;
PAGED_CODE();
DebugTrace((DEBUG_LEVEL_TRACE), (DEBUG_TARGET_CLEANUP|DEBUG_TARGET_IRPCONTEXT),
("Enter XifsdCommonCleanUp pIrpContext(%p)\n", pIrpContext));
ASSERT_IRPCONTEXT(pIrpContext);
pIrp = pIrpContext->Irp;
ASSERT(pIrp);
// check if open request is releated to file system CDO
{
PDEVICE_OBJECT DeviceObject = pIrpContext->TargetDeviceObject;
ASSERT(DeviceObject);
if (DeviceObject == XiGlobalData.XifsControlDeviceObject) {
RC = STATUS_SUCCESS;
DebugTrace(DEBUG_LEVEL_TRACE, (DEBUG_TARGET_CLEANUP),
("CDO Device TargetDevide(%p).\n", DeviceObject));
XixFsdCompleteRequest(pIrpContext,RC,0);
return(RC);
}
}
if(pIrpContext->VCB == NULL){
DebugTrace(DEBUG_LEVEL_TRACE, DEBUG_TARGET_CLEANUP,
("pIrpContext->VCB == NULL.\n"));
RC = STATUS_SUCCESS;
XixFsdCompleteRequest(pIrpContext, RC, 0);
return RC;
}
pIrpSp = IoGetCurrentIrpStackLocation(pIrp);
ASSERT(pIrpSp);
pFileObject = pIrpSp->FileObject;
ASSERT(pFileObject);
TypeOfOpen = XixFsdDecodeFileObject(pFileObject, &pFCB, &pCCB);
if(TypeOfOpen <= StreamFileOpen){
DebugTrace((DEBUG_LEVEL_TRACE|DEBUG_LEVEL_INFO), DEBUG_TARGET_CLEANUP,
("TypeOfOpen <= StreamFileOpen.\n"));
XixFsdCompleteRequest(pIrpContext, STATUS_SUCCESS, 0);
return STATUS_SUCCESS;
}
CanWait = XifsdCheckFlagBoolean(pIrpContext->IrpContextFlags, XIFSD_IRP_CONTEXT_WAIT);
if(CanWait == FALSE){
DebugTrace((DEBUG_LEVEL_TRACE|DEBUG_LEVEL_INFO), (DEBUG_TARGET_CLEANUP| DEBUG_TARGET_IRPCONTEXT),
("PostRequest IrpCxt(%p) Irp(%p)\n", pIrpContext, pIrp));
RC = XixFsdPostRequest(pIrpContext, pIrp);
return RC;
}
ASSERT_FCB(pFCB);
pVCB = pFCB->PtrVCB;
ASSERT_VCB(pVCB);
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLEANUP| DEBUG_TARGET_RESOURCE|DEBUG_TARGET_VCB),
("Acquire exclusive pVCB(%p) VCBResource(%p).\n", pVCB, &pVCB->VCBResource));
if((TypeOfOpen == UserVolumeOpen)
&& XifsdCheckFlagBoolean(pFileObject->Flags, FO_FILE_MODIFIED))
{
XifsdAcquireVcbExclusive(CanWait, pVCB, FALSE);
VCBAcquired = TRUE;
}
XifsdAcquireFcbExclusive(CanWait, pFCB, FALSE);
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLEANUP| DEBUG_TARGET_RESOURCE| DEBUG_TARGET_FCB),
("Acquire exclusive FCB(%p) FCBResource(%p).\n", pFCB, pFCB->FCBResource));
XifsdSetFlag(pFileObject->Flags, FO_CLEANUP_COMPLETE);
DebugTrace(DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_CLEANUP| DEBUG_TARGET_RESOURCE| DEBUG_TARGET_FCB),
("Set File Object Flags(0x%x)\n", pFileObject->Flags));
//IoRemoveShareAccess( pFileObject, &pFCB->FCBShareAccess );
try{
switch(TypeOfOpen){
case UserDirectoryOpen:
if(XifsdCheckFlagBoolean(pCCB->CCBFlags, XIFSD_CCB_FLAG_NOFITY_SET))
{
DebugTrace(DEBUG_LEVEL_CRITICAL, DEBUG_TARGET_ALL,
("CompletionFilter Notify CleanUp (%wZ) pCCB(%p)\n", &pFCB->FCBName, pCCB));
FsRtlNotifyCleanup(pVCB->NotifyIRPSync, &pVCB->NextNotifyIRP, pCCB);
//DbgPrint("Notify CleanUp (%wZ) pCCB(%p)\n", &pFCB->FCBName, pCCB);
}
//DbgPrint("CleanUp (%wZ) pCCB(%p) pCCB->CCBFlags(%x)\n", &pFCB->FCBName, pCCB, pCCB->CCBFlags);
DebugTrace(DEBUG_LEVEL_CRITICAL, DEBUG_TARGET_ALL,
("!!!!CleanUp (%wZ) pCCB(%p)\n", &pFCB->FCBName, pCCB));
IoRemoveShareAccess( pFileObject, &pFCB->FCBShareAccess );
break;
case UserFileOpen:
//
// Coordinate the cleanup operation with the oplock state.
// Oplock cleanup operations can always cleanup immediately so no
// need to check for STATUS_PENDING.
//
FsRtlCheckOplock( &pFCB->FCBOplock,
pIrp,
pIrpContext,
NULL,
NULL );
//
// Unlock all outstanding file locks.
//
if (pFCB->FCBFileLock != NULL) {
FsRtlFastUnlockAll( pFCB->FCBFileLock,
pFileObject,
IoGetRequestorProcess( pIrp ),
NULL );
}
//
// Check the fast io state.
//
XifsdLockFcb( pIrpContext, pFCB );
pFCB->IsFastIoPossible = XixFsdCheckFastIoPossible( pFCB );
XifsdUnlockFcb( pIrpContext, pFCB );
/*
if((pFCB->HasLock != FCB_FILE_LOCK_HAS)
&& (!XifsdCheckFlagBoolean(pFCB->FCBFlags, XIFSD_FCB_OPEN_WRITE))
&& XifsdCheckFlagBoolean(pFileObject->Flags, FO_CACHE_SUPPORTED)
&& (pFCB->FCBCleanup == 1)
){
if(pFCB->SectionObject.DataSectionObject != NULL)
{
CcFlushCache(&(pFCB->SectionObject), NULL, 0, NULL);
ExAcquireResourceSharedLite(pFCB->PagingIoResource, TRUE);
ExReleaseResourceLite( pFCB->PagingIoResource );
CcPurgeCacheSection( &(pFCB->SectionObject),
NULL,
0,
FALSE
);
}
}
*/
if(
XifsdCheckFlagBoolean(pFileObject->Flags, FO_CACHE_SUPPORTED) &&
(pFCB->FcbNonCachedOpenCount > 1) &&
((pFCB->FcbNonCachedOpenCount + 1) == pFCB->FCBCleanup)
)
{
if(pFCB->SectionObject.DataSectionObject != NULL)
{
// changed by ILGU HONG for readonly 09052006
if(!pFCB->PtrVCB->IsVolumeWriteProctected)
CcFlushCache(&(pFCB->SectionObject), NULL, 0, NULL);
// changed by ILGU HONG for readonly end
//DbgPrint("CcFlush 1 File(%wZ)\n", &pFCB->FCBFullPath);
ExAcquireResourceSharedLite(pFCB->PagingIoResource, TRUE);
ExReleaseResourceLite( pFCB->PagingIoResource );
CcPurgeCacheSection( &(pFCB->SectionObject),
NULL,
0,
FALSE
);
}
}
/*
else if(pFCB->FCBCleanup == 1 ){
if(XifsdCheckFlagBoolean(pFileObject->Flags, FO_CACHE_SUPPORTED)){
if(pFCB->SectionObject.DataSectionObject != NULL)
{
CcFlushCache(&(pFCB->SectionObject), NULL, 0, NULL);
ExAcquireResourceSharedLite(pFCB->PagingIoResource, TRUE);
ExReleaseResourceLite( pFCB->PagingIoResource );
CcPurgeCacheSection( &(pFCB->SectionObject),
NULL,
0,
FALSE
);
}
}
if(XifsdCheckFlagBoolean(pFCB->FCBFlags,XIFSD_FCB_MODIFIED_FILE)){
XixFsdUpdateFCB(pFCB);
}
}
*/
IoRemoveShareAccess( pFileObject, &pFCB->FCBShareAccess );
//
// Cleanup the cache map.
//
CcUninitializeCacheMap( pFileObject, NULL, NULL );
break;
case UserVolumeOpen:
break;
default:
break;
}
if((TypeOfOpen == UserDirectoryOpen) || (TypeOfOpen == UserFileOpen)){
if(pFCB->FCBCleanup == 1 ){
if(XifsdCheckFlagBoolean(pFCB->FCBFlags,XIFSD_FCB_MODIFIED_FILE)){
// changed by ILGU HONG for readonly 09052006
if(!pFCB->PtrVCB->IsVolumeWriteProctected){
XixFsdUpdateFCB(pFCB);
if(pFCB->WriteStartOffset != -1){
//DbgPrint("Set Update Information!!!\n");
XixFsdSendFileChangeRC(
TRUE,
pVCB->HostMac,
pFCB->LotNumber,
pVCB->DiskId,
pVCB->PartitionId,
pFCB->FileSize.QuadPart,
pFCB->RealAllocationSize,
pFCB->WriteStartOffset
);
pFCB->WriteStartOffset = -1;
}
}
// changed by ILGU HONG for readonly end
}
}
if(XifsdCheckFlagBoolean(pCCB->CCBFlags, XIFSD_CCB_FLAGS_DELETE_ON_CLOSE)){
if(pFCB == pFCB->PtrVCB->RootDirFCB){
XifsdClearFlag(pCCB->CCBFlags, XIFSD_CCB_FLAGS_DELETE_ON_CLOSE);
XifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
}else{
XifsdSetFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
}
}
// changed by ILGU HONG for readonly 09082006
if(XifsdCheckFlagBoolean(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE) && (!pFCB->PtrVCB->IsVolumeWriteProctected) ){
// changed by ILGU HONG for readonly end
if(pFCB->FCBCleanup == 1){
//DbgPrint(" !!!Delete Entry From table (%wZ) .\n", &pFCB->FCBFullPath);
ASSERT_CCB(pCCB);
pLCB = pCCB->PtrLCB;
ASSERT_LCB(pLCB);
pParentFCB = pLCB->ParentFcb;
ASSERT_FCB(pParentFCB);
pFCB->FileSize.QuadPart = 0;
pFCB->ValidDataLength.QuadPart = 0;
if(pFCB->FCBType == FCB_TYPE_FILE){
XifsdReleaseFcb(TRUE, pFCB);
XifsdAcquireFcbExclusive(TRUE, pParentFCB, FALSE);
ParentFCBAcquired = TRUE;
XifsdAcquireFcbExclusive(TRUE, pFCB, FALSE);
RC = DeleteParentChild(pIrpContext, pParentFCB, &pLCB->FileName);
if(!NT_SUCCESS(RC)){
DebugTrace(DEBUG_LEVEL_ERROR, DEBUG_TARGET_ALL,
("Fail DeleteParentChild (%wZ)\n", &pLCB->FileName));
//XifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
RC = STATUS_SUCCESS;
goto pass_through;
}
XifsdClearFlag(pLCB->LCBFlags, XIFSD_LCB_STATE_DELETE_ON_CLOSE);
XifsdSetFlag(pLCB->LCBFlags, XIFSD_LCB_STATE_LINK_IS_GONE);
XixFsdRemovePrefix(TRUE, pLCB);
//
// Now Decrement the reference counts for the parent and drop the Vcb.
//
XifsdLockVcb(pIrpContext,pVCB);
DebugTrace( DEBUG_LEVEL_INFO, (DEBUG_TARGET_FILEINFO|DEBUG_TARGET_FCB|DEBUG_TARGET_REFCOUNT),
("XifsdSetRenameInformation, PFcb (%I64d) Vcb %d/%d Fcb %d/%d\n",
pParentFCB->LotNumber,
pVCB->VCBReference,
pVCB->VCBUserReference,
pParentFCB->FCBReference,
pParentFCB->FCBUserReference ));
XifsdDecRefCount( pParentFCB, 1, 1 );
DebugTrace( DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_FILEINFO|DEBUG_TARGET_FCB|DEBUG_TARGET_REFCOUNT),
("XifsdSetRenameInformation, PFcb (%I64d) Vcb %d/%d Fcb %d/%d\n",
pParentFCB->LotNumber,
pVCB->VCBReference,
pVCB->VCBUserReference,
pParentFCB->FCBReference,
pParentFCB->FCBUserReference ));
XifsdUnlockVcb( pIrpContext, pVCB );
if(!NT_SUCCESS(RC)){
DebugTrace(DEBUG_LEVEL_ERROR, DEBUG_TARGET_ALL,
("Fail DeleteParentChild (%wZ)\n", &pLCB->FileName));
XifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
RC = STATUS_SUCCESS;
goto pass_through;
}
}else {
RC = XixFsReLoadFileFromFcb(pFCB);
if(!NT_SUCCESS(RC)){
DebugTrace(DEBUG_LEVEL_ERROR, DEBUG_TARGET_ALL,
("Fail XixFsReLoadFileFromFcb (%wZ)\n", &pFCB->FCBName));
XifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
RC = STATUS_SUCCESS;
goto pass_through;
}
if(pFCB->ChildCount != 0){
XifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
RC = STATUS_SUCCESS;
goto pass_through;
}
XifsdReleaseFcb(TRUE, pFCB);
XifsdAcquireFcbExclusive(TRUE, pParentFCB, FALSE);
ParentFCBAcquired = TRUE;
XifsdAcquireFcbExclusive(TRUE, pFCB, FALSE);
RC = DeleteParentChild(pIrpContext, pParentFCB, &pLCB->FileName);
if(!NT_SUCCESS(RC)){
DebugTrace(DEBUG_LEVEL_ERROR, DEBUG_TARGET_ALL,
("Fail DeleteParentChild (%wZ)\n", &pLCB->FileName));
//ifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
RC = STATUS_SUCCESS;
goto pass_through;
}
XifsdClearFlag(pLCB->LCBFlags, XIFSD_LCB_STATE_DELETE_ON_CLOSE);
XifsdSetFlag(pLCB->LCBFlags, XIFSD_LCB_STATE_LINK_IS_GONE);
XixFsdRemovePrefix(TRUE, pLCB);
//
// Now Decrement the reference counts for the parent and drop the Vcb.
//
XifsdLockVcb(pIrpContext,pVCB);
DebugTrace( DEBUG_LEVEL_INFO, (DEBUG_TARGET_FILEINFO|DEBUG_TARGET_FCB|DEBUG_TARGET_REFCOUNT),
("XifsdSetRenameInformation, PFcb (%I64d) Vcb %d/%d Fcb %d/%d\n",
pParentFCB->LotNumber,
pVCB->VCBReference,
pVCB->VCBUserReference,
pParentFCB->FCBReference,
pParentFCB->FCBUserReference ));
XifsdDecRefCount( pParentFCB, 1, 1 );
DebugTrace( DEBUG_LEVEL_CRITICAL, (DEBUG_TARGET_FILEINFO|DEBUG_TARGET_FCB|DEBUG_TARGET_REFCOUNT),
("XifsdSetRenameInformation, PFcb (%I64d) Vcb %d/%d Fcb %d/%d\n",
pParentFCB->LotNumber,
pVCB->VCBReference,
pVCB->VCBUserReference,
pParentFCB->FCBReference,
pParentFCB->FCBUserReference ));
XifsdUnlockVcb( pIrpContext, pVCB );
if(!NT_SUCCESS(RC)){
DebugTrace(DEBUG_LEVEL_ERROR, DEBUG_TARGET_ALL,
("Fail DeleteParentChild (%wZ)\n", &pLCB->FileName));
XifsdClearFlag(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE);
RC = STATUS_SUCCESS;
goto pass_through;
}
}
//XixFsdDeleteUpdateFCB(pFCB);
XixFsdSendRenameLinkBC(
TRUE,
XIFS_SUBTYPE_FILE_DEL,
pVCB->HostMac,
pFCB->LotNumber,
pVCB->DiskId,
pVCB->PartitionId,
pFCB->ParentLotNumber,
0
);
}
}
}
pass_through:
XifsdLockVcb(pIrpContext, pVCB);
if(XifsdCheckFlagBoolean(pFileObject->Flags, FO_NO_INTERMEDIATE_BUFFERING))
{
ASSERT(pFCB->FcbNonCachedOpenCount > 0);
pFCB->FcbNonCachedOpenCount --;
}
XifsdDecrementClenupCount(pFCB);
DebugTrace(DEBUG_LEVEL_ALL, DEBUG_TARGET_ALL,
("Cleanup Name(%wZ) FCBLotNumber(%I64d) FCBCleanUp(%ld) VCBCleanup(%ld) pCCB(%p) FileObject(%p)\n",
&pFCB->FCBName,
pFCB->LotNumber,
pFCB->FCBCleanup,
pVCB->VCBCleanup,
pCCB,
pFileObject
));
XifsdUnlockVcb( pIrpContext, pVCB );
AttemptTeardown = (pVCB->VCBCleanup == 0 && pVCB->VCBState == XIFSD_VCB_STATE_VOLUME_DISMOUNTED );
if(pFileObject == pVCB->LockVolumeFileObject){
ASSERT(XifsdCheckFlagBoolean(pVCB->VCBFlags, XIFSD_VCB_FLAGS_VOLUME_LOCKED));
IoAcquireVpbSpinLock(&SavedIrql);
XifsdClearFlag(pVCB->PtrVPB->Flags, VPB_LOCKED);
IoReleaseVpbSpinLock( SavedIrql );
XifsdClearFlag(pVCB->VCBFlags, XIFSD_VCB_FLAGS_VOLUME_LOCKED);
pVCB->LockVolumeFileObject = NULL;
SendUnlockNotification = TRUE;
}
/*
if( (pFCB->FCBCleanup == 0)
&& (!XifsdCheckFlagBoolean(pFCB->FCBFlags, XIFSD_FCB_DELETE_ON_CLOSE)) ){
DebugTrace(DEBUG_LEVEL_INFO, (DEBUG_TARGET_CLEANUP|DEBUG_TARGET_IRPCONTEXT| DEBUG_TARGET_ALL),
("CleanUp Release Lot Lock LotNumber(%ld)\n", pFCB->LotNumber));
XifsdLotUnLock(pVCB, pVCB->TargetDeviceObject, pFCB->LotNumber);
pFCB->HasLock = FCB_FILE_LOCK_INVALID;
}
*/
//
// We must clean up the share access at this time, since we may not
// get a Close call for awhile if the file was mapped through this
// File Object.
//
}finally{
XifsdReleaseFcb(pIrpContext, pFCB);
if(ParentFCBAcquired) {
XifsdReleaseFcb(TRUE,pParentFCB);
}
if (SendUnlockNotification) {
FsRtlNotifyVolumeEvent( pFileObject, FSRTL_VOLUME_UNLOCK );
}
if (VCBAcquired) {
XifsdReleaseVcb( pIrpContext, pVCB);
}
}
if (AttemptTeardown) {
XifsdAcquireVcbExclusive( CanWait, pVCB, FALSE );
try {
XixFsdPurgeVolume( pIrpContext, pVCB, FALSE );
} finally {
XifsdReleaseVcb( pIrpContext, pVCB );
}
}
//
// If this is a normal termination then complete the request
//
DebugTrace((DEBUG_LEVEL_TRACE), (DEBUG_TARGET_CLEANUP|DEBUG_TARGET_IRPCONTEXT),
("Exit XifsdCommonCleanUp pIrpContext(%p)\n", pIrpContext));
XixFsdCompleteRequest( pIrpContext, STATUS_SUCCESS, 0 );
return STATUS_SUCCESS;
}
static NTSTATUS
VfatMount (PVFAT_IRP_CONTEXT IrpContext)
/*
* FUNCTION: Mount the filesystem
*/
{
PDEVICE_OBJECT DeviceObject = NULL;
PDEVICE_EXTENSION DeviceExt = NULL;
BOOLEAN RecognizedFS;
NTSTATUS Status;
PVFATFCB Fcb = NULL;
PVFATFCB VolumeFcb = NULL;
PVFATCCB Ccb = NULL;
PDEVICE_OBJECT DeviceToMount;
PVPB Vpb;
UNICODE_STRING NameU = RTL_CONSTANT_STRING(L"\\$$Fat$$");
UNICODE_STRING VolumeNameU = RTL_CONSTANT_STRING(L"\\$$Volume$$");
ULONG HashTableSize;
ULONG eocMark;
FATINFO FatInfo;
DPRINT("VfatMount(IrpContext %p)\n", IrpContext);
ASSERT(IrpContext);
if (IrpContext->DeviceObject != VfatGlobalData->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
goto ByeBye;
}
DeviceToMount = IrpContext->Stack->Parameters.MountVolume.DeviceObject;
Vpb = IrpContext->Stack->Parameters.MountVolume.Vpb;
Status = VfatHasFileSystem (DeviceToMount, &RecognizedFS, &FatInfo);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
if (RecognizedFS == FALSE)
{
DPRINT("VFAT: Unrecognized Volume\n");
Status = STATUS_UNRECOGNIZED_VOLUME;
goto ByeBye;
}
/* Use prime numbers for the table size */
if (FatInfo.FatType == FAT12)
{
HashTableSize = 4099; // 4096 = 4 * 1024
}
else if (FatInfo.FatType == FAT16 ||
FatInfo.FatType == FATX16)
{
HashTableSize = 16411; // 16384 = 16 * 1024
}
else
{
HashTableSize = 65537; // 65536 = 64 * 1024;
}
HashTableSize = FCB_HASH_TABLE_SIZE;
DPRINT("VFAT: Recognized volume\n");
Status = IoCreateDevice(VfatGlobalData->DriverObject,
ROUND_UP(sizeof (DEVICE_EXTENSION), sizeof(ULONG)) + sizeof(HASHENTRY*) * HashTableSize,
NULL,
FILE_DEVICE_DISK_FILE_SYSTEM,
DeviceToMount->Characteristics,
FALSE,
&DeviceObject);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
DeviceObject->Flags = DeviceObject->Flags | DO_DIRECT_IO;
DeviceExt = (PVOID) DeviceObject->DeviceExtension;
RtlZeroMemory(DeviceExt, ROUND_UP(sizeof(DEVICE_EXTENSION), sizeof(ULONG)) + sizeof(HASHENTRY*) * HashTableSize);
DeviceExt->FcbHashTable = (HASHENTRY**)((ULONG_PTR)DeviceExt + ROUND_UP(sizeof(DEVICE_EXTENSION), sizeof(ULONG)));
DeviceExt->HashTableSize = HashTableSize;
/* use same vpb as device disk */
DeviceObject->Vpb = Vpb;
DeviceToMount->Vpb = Vpb;
Status = VfatMountDevice(DeviceExt, DeviceToMount);
if (!NT_SUCCESS(Status))
{
/* FIXME: delete device object */
goto ByeBye;
}
DPRINT("BytesPerSector: %d\n", DeviceExt->FatInfo.BytesPerSector);
DPRINT("SectorsPerCluster: %d\n", DeviceExt->FatInfo.SectorsPerCluster);
DPRINT("FATCount: %d\n", DeviceExt->FatInfo.FATCount);
DPRINT("FATSectors: %d\n", DeviceExt->FatInfo.FATSectors);
DPRINT("RootStart: %d\n", DeviceExt->FatInfo.rootStart);
DPRINT("DataStart: %d\n", DeviceExt->FatInfo.dataStart);
if (DeviceExt->FatInfo.FatType == FAT32)
{
DPRINT("RootCluster: %d\n", DeviceExt->FatInfo.RootCluster);
}
switch (DeviceExt->FatInfo.FatType)
{
case FAT12:
DeviceExt->GetNextCluster = FAT12GetNextCluster;
DeviceExt->FindAndMarkAvailableCluster = FAT12FindAndMarkAvailableCluster;
DeviceExt->WriteCluster = FAT12WriteCluster;
DeviceExt->CleanShutBitMask = 0;
break;
case FAT16:
case FATX16:
DeviceExt->GetNextCluster = FAT16GetNextCluster;
DeviceExt->FindAndMarkAvailableCluster = FAT16FindAndMarkAvailableCluster;
DeviceExt->WriteCluster = FAT16WriteCluster;
DeviceExt->CleanShutBitMask = 0x8000;
break;
case FAT32:
case FATX32:
DeviceExt->GetNextCluster = FAT32GetNextCluster;
DeviceExt->FindAndMarkAvailableCluster = FAT32FindAndMarkAvailableCluster;
DeviceExt->WriteCluster = FAT32WriteCluster;
DeviceExt->CleanShutBitMask = 0x80000000;
break;
}
if (DeviceExt->FatInfo.FatType == FATX16
|| DeviceExt->FatInfo.FatType == FATX32)
{
DeviceExt->Flags |= VCB_IS_FATX;
DeviceExt->GetNextDirEntry = FATXGetNextDirEntry;
DeviceExt->BaseDateYear = 2000;
}
else
{
DeviceExt->GetNextDirEntry = FATGetNextDirEntry;
DeviceExt->BaseDateYear = 1980;
}
DeviceExt->StorageDevice = DeviceToMount;
DeviceExt->StorageDevice->Vpb->DeviceObject = DeviceObject;
DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
DeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
DPRINT("FsDeviceObject %p\n", DeviceObject);
/* Initialize this resource early ... it's used in VfatCleanup */
ExInitializeResourceLite(&DeviceExt->DirResource);
DeviceExt->FATFileObject = IoCreateStreamFileObject(NULL, DeviceExt->StorageDevice);
Fcb = vfatNewFCB(DeviceExt, &NameU);
if (Fcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
Ccb = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList);
if (Ccb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
RtlZeroMemory(Ccb, sizeof (VFATCCB));
DeviceExt->FATFileObject->FsContext = Fcb;
DeviceExt->FATFileObject->FsContext2 = Ccb;
DeviceExt->FATFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
DeviceExt->FATFileObject->PrivateCacheMap = NULL;
DeviceExt->FATFileObject->Vpb = DeviceObject->Vpb;
Fcb->FileObject = DeviceExt->FATFileObject;
Fcb->Flags |= FCB_IS_FAT;
Fcb->RFCB.FileSize.QuadPart = DeviceExt->FatInfo.FATSectors * DeviceExt->FatInfo.BytesPerSector;
Fcb->RFCB.ValidDataLength = Fcb->RFCB.FileSize;
Fcb->RFCB.AllocationSize = Fcb->RFCB.FileSize;
CcInitializeCacheMap(DeviceExt->FATFileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
TRUE,
&VfatGlobalData->CacheMgrCallbacks,
Fcb);
DeviceExt->LastAvailableCluster = 2;
ExInitializeResourceLite(&DeviceExt->FatResource);
InitializeListHead(&DeviceExt->FcbListHead);
VolumeFcb = vfatNewFCB(DeviceExt, &VolumeNameU);
if (VolumeFcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
VolumeFcb->Flags = FCB_IS_VOLUME;
VolumeFcb->RFCB.FileSize.QuadPart = DeviceExt->FatInfo.Sectors * DeviceExt->FatInfo.BytesPerSector;
VolumeFcb->RFCB.ValidDataLength = VolumeFcb->RFCB.FileSize;
VolumeFcb->RFCB.AllocationSize = VolumeFcb->RFCB.FileSize;
DeviceExt->VolumeFcb = VolumeFcb;
ExAcquireResourceExclusiveLite(&VfatGlobalData->VolumeListLock, TRUE);
InsertHeadList(&VfatGlobalData->VolumeListHead, &DeviceExt->VolumeListEntry);
ExReleaseResourceLite(&VfatGlobalData->VolumeListLock);
/* read serial number */
DeviceObject->Vpb->SerialNumber = DeviceExt->FatInfo.VolumeID;
/* read volume label */
ReadVolumeLabel(DeviceExt, DeviceObject->Vpb);
/* read clean shutdown bit status */
Status = GetNextCluster(DeviceExt, 1, &eocMark);
if (NT_SUCCESS(Status))
{
if (eocMark & DeviceExt->CleanShutBitMask)
{
/* unset clean shutdown bit */
eocMark &= ~DeviceExt->CleanShutBitMask;
WriteCluster(DeviceExt, 1, eocMark);
VolumeFcb->Flags |= VCB_CLEAR_DIRTY;
}
}
VolumeFcb->Flags |= VCB_IS_DIRTY;
FsRtlNotifyVolumeEvent(DeviceExt->FATFileObject, FSRTL_VOLUME_MOUNT);
Status = STATUS_SUCCESS;
ByeBye:
if (!NT_SUCCESS(Status))
{
// cleanup
if (DeviceExt && DeviceExt->FATFileObject)
ObDereferenceObject (DeviceExt->FATFileObject);
if (Fcb)
vfatDestroyFCB(Fcb);
if (Ccb)
vfatDestroyCCB(Ccb);
if (DeviceObject)
IoDeleteDevice(DeviceObject);
if (VolumeFcb)
vfatDestroyFCB(VolumeFcb);
}
return Status;
}
//
// FSCTL_LOCK_VOLUME
//
NTSTATUS DDKAPI VfsLockVolume(PIRP irp, PIO_STACK_LOCATION stack_location)
{
NTSTATUS status = STATUS_UNSUCCESSFUL;
PDEVICE_OBJECT device = NULL;
PLKLVCB vcb;
BOOLEAN notified = FALSE;
BOOLEAN resource_acquired = FALSE;
PFILE_OBJECT file_obj = NULL;
// request to fs device not permited
device = stack_location->DeviceObject;
CHECK_OUT(device == lklfsd.device, STATUS_INVALID_DEVICE_REQUEST);
// get vcb
vcb = (PLKLVCB)device->DeviceExtension;
ASSERT(vcb);
// file object - should be the file object for a volume open,
// even so we accept it for any open file
file_obj = stack_location->FileObject;
ASSERT(file_obj);
// notify volume locked
FsRtlNotifyVolumeEvent(file_obj, FSRTL_VOLUME_LOCK);
notified = TRUE;
// acquire vcb lock
ExAcquireResourceSharedLite(&vcb->vcb_resource, TRUE);
resource_acquired = TRUE;
// check lock flag
if (FLAG_ON(vcb->flags, VFS_VCB_FLAGS_VOLUME_LOCKED)) {
VfsReportError("Volume already locked");
TRY_RETURN(STATUS_ACCESS_DENIED);
}
// abort if open files still exist
if (vcb->open_count) {
VfsReportError("Open files still exist");
TRY_RETURN(STATUS_ACCESS_DENIED);
}
// release lock
RELEASE(&vcb->vcb_resource);
resource_acquired = FALSE;
// purge volume
VfsPurgeVolume(vcb, TRUE);
ExAcquireResourceExclusiveLite(&vcb->vcb_resource, TRUE);
resource_acquired = TRUE;
// if there are still open referneces we can't lock the volume
if (vcb->reference_count > 1) {
VfsReportError("Could not purge cached files");
TRY_RETURN(STATUS_ACCESS_DENIED);
}
// set flag in both vcb and vpb structures
SET_FLAG(vcb->flags, VFS_VCB_FLAGS_VOLUME_LOCKED);
SetVpbFlag(vcb->vpb, VFS_VCB_FLAGS_VOLUME_LOCKED);
DbgPrint("*** Volume LOCKED ***\n");
status = STATUS_SUCCESS;
try_exit:
if (resource_acquired)
RELEASE(&vcb->vcb_resource);
if (!NT_SUCCESS(status) && notified)
FsRtlNotifyVolumeEvent(file_obj, FSRTL_VOLUME_LOCK_FAILED);
return status;
}
NTSTATUS
CdCommonClose (
IN PIRP_CONTEXT IrpContext,
IN PIRP Irp
)
/*++
Routine Description:
This routine is the Fsd entry for the close operation. We decode the file
object to find the CDFS structures and type of open. We call our internal
worker routine to perform the actual work. If the work wasn't completed
then we post to one of our worker queues. The Ccb isn't needed after this
point so we delete the Ccb and return STATUS_SUCCESS to our caller in all
cases.
Arguments:
Irp - Supplies the Irp to process
Return Value:
STATUS_SUCCESS
--*/
{
TYPE_OF_OPEN TypeOfOpen;
PVCB Vcb;
PFCB Fcb;
PCCB Ccb;
ULONG UserReference = 0;
BOOLEAN PotentialVcbTeardown = FALSE;
BOOLEAN ForceDismount = FALSE;
PAGED_CODE();
ASSERT_IRP_CONTEXT( IrpContext );
ASSERT_IRP( Irp );
//
// If we were called with our file system device object instead of a
// volume device object, just complete this request with STATUS_SUCCESS.
//
if (IrpContext->Vcb == NULL) {
CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
return STATUS_SUCCESS;
}
//
// Decode the file object to get the type of open and Fcb/Ccb.
//
TypeOfOpen = CdDecodeFileObject( IrpContext,
IoGetCurrentIrpStackLocation( Irp )->FileObject,
&Fcb,
&Ccb );
//
// No work to do for unopened file objects.
//
if (TypeOfOpen == UnopenedFileObject) {
CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
return STATUS_SUCCESS;
}
Vcb = Fcb->Vcb;
//
// Clean up any CCB associated with this open.
//
if (Ccb != NULL) {
UserReference = 1;
//
// Was a FSCTL_DISMOUNT issued on this handle? If so, we need to
// force a dismount of the volume now.
//
ForceDismount = BooleanFlagOn( Ccb->Flags, CCB_FLAG_DISMOUNT_ON_CLOSE);
//
// We can always deallocate the Ccb if present.
//
CdDeleteCcb( IrpContext, Ccb );
}
//
// If this is the last reference to a user file or directory on a
// currently mounted volume, then post it to the delayed close queue. Note
// that the VcbCondition check is unsafe, but it doesn't really matter -
// we just might delay the volume teardown a little by posting this close.
//
if ((Vcb->VcbCondition == VcbMounted) &&
(Fcb->FcbReference == 1) &&
((TypeOfOpen == UserFileOpen) ||
(TypeOfOpen == UserDirectoryOpen))) {
CdQueueClose( IrpContext, Fcb, UserReference, TRUE );
IrpContext = NULL;
//
// Otherwise try to process this close. Post to the async close queue
// if we can't acquire all of the resources.
//
} else {
//
// If we may be dismounting this volume then acquire the CdData
// resource.
//
// Since we now must make volumes go away as soon as reasonable after
// the last user handles closes, key off of the cleanup count. It is
// OK to do this more than neccesary. Since this Fcb could be holding
// a number of other Fcbs (and thus their references), a simple check
// on reference count is not appropriate.
//
// Do an unsafe check first to avoid taking the (global) cddata lock in the
// common case.
//
if (((Vcb->VcbCleanup == 0) || ForceDismount) &&
(Vcb->VcbCondition != VcbMounted)) {
//
// Possible. Acquire CdData to synchronise with the remount path, and
// then repeat the tests.
//
// Note that we must send the notification outside of any locks, since
// the worker that processes the notify could also be calling into our
// pnp path which wants both CdData and VcbResource. For a force dismount
// the volume will be marked invalid (no going back), so we will definitely
// go ahead and dismount below.
//
if (ForceDismount) {
//
// Send notification.
//
FsRtlNotifyVolumeEvent( IoGetCurrentIrpStackLocation( Irp )->FileObject,
FSRTL_VOLUME_DISMOUNT );
}
CdAcquireCdData( IrpContext );
if (((Vcb->VcbCleanup == 0) || ForceDismount) &&
(Vcb->VcbCondition != VcbMounted) &&
(Vcb->VcbCondition != VcbMountInProgress) &&
FlagOn( IrpContext->Flags, IRP_CONTEXT_FLAG_TOP_LEVEL_CDFS )) {
PotentialVcbTeardown = TRUE;
}
else {
//
// We can't dismount this volume now, there are other references or
// it's just been remounted.
//
CdReleaseCdData( IrpContext);
}
}
if (ForceDismount) {
//
// Physically disconnect this Vcb from the device so a new mount can
// occur. Vcb deletion cannot happen at this time since there is
// a handle on it associated with this very request, but we'll call
// check for dismount again later anyway.
//
CdCheckForDismount( IrpContext, Vcb, TRUE );
}
//
// Call the worker routine to perform the actual work. This routine
// should never raise except for a fatal error.
//
if (!CdCommonClosePrivate( IrpContext, Vcb, Fcb, UserReference, TRUE )) {
//
// If we didn't complete the request then post the request as needed.
//
CdQueueClose( IrpContext, Fcb, UserReference, FALSE );
IrpContext = NULL;
//
// Check whether we should be dismounting the volume and then complete
// the request.
//
} else if (PotentialVcbTeardown) {
CdCheckForDismount( IrpContext, Vcb, FALSE );
}
}
//
// Always complete this request with STATUS_SUCCESS.
//
CdCompleteRequest( IrpContext, Irp, STATUS_SUCCESS );
if (PotentialVcbTeardown) {
CdReleaseCdData( IrpContext );
}
//
// Always return STATUS_SUCCESS for closes.
//
return STATUS_SUCCESS;
}
/* Last handle to a file object is closed */
NTSTATUS
NTAPI
FatiCleanup(PFAT_IRP_CONTEXT IrpContext, PIRP Irp)
{
PIO_STACK_LOCATION IrpSp;
PFILE_OBJECT FileObject;
TYPE_OF_OPEN TypeOfOpen;
PSHARE_ACCESS ShareAccess;
BOOLEAN SendUnlockNotification = FALSE;
PLARGE_INTEGER TruncateSize = NULL;
//LARGE_INTEGER LocalTruncateSize;
BOOLEAN AcquiredVcb = FALSE, AcquiredFcb = FALSE;
NTSTATUS Status;
PVCB Vcb;
PFCB Fcb;
PCCB Ccb;
IrpSp = IoGetCurrentIrpStackLocation( Irp );
DPRINT("FatiCleanup\n");
DPRINT("\tIrp = %p\n", Irp);
DPRINT("\t->FileObject = %p\n", IrpSp->FileObject);
FileObject = IrpSp->FileObject;
TypeOfOpen = FatDecodeFileObject(FileObject, &Vcb, &Fcb, &Ccb);
if (TypeOfOpen == UnopenedFileObject)
{
DPRINT1("Unopened File Object\n");
FatCompleteRequest(IrpContext, Irp, STATUS_SUCCESS);
return STATUS_SUCCESS;
}
if (FlagOn( FileObject->Flags, FO_CLEANUP_COMPLETE ))
{
/* Just flush the file */
if (FlagOn(Vcb->State, VCB_STATE_FLAG_DEFERRED_FLUSH) &&
FlagOn(FileObject->Flags, FO_FILE_MODIFIED) &&
!FlagOn(Vcb->State, VCB_STATE_FLAG_WRITE_PROTECTED) &&
(TypeOfOpen == UserFileOpen))
{
//Status = FatFlushFile(IrpContext, Fcb, Flush);
//if (!NT_SUCCESS(Status)) FatNormalizeAndRaiseStatus(IrpContext, Status);
UNIMPLEMENTED;
}
FatCompleteRequest(IrpContext, Irp, STATUS_SUCCESS);
return STATUS_SUCCESS;
}
if (TypeOfOpen == UserFileOpen ||
TypeOfOpen == UserDirectoryOpen)
{
ASSERT(Fcb != NULL);
(VOID)FatAcquireExclusiveFcb(IrpContext, Fcb);
AcquiredFcb = TRUE;
/* Set FCB flags according to DELETE_ON_CLOSE */
if (FlagOn(Ccb->Flags, CCB_DELETE_ON_CLOSE))
{
ASSERT(FatNodeType(Fcb) != FAT_NTC_ROOT_DCB);
SetFlag(Fcb->State, FCB_STATE_DELETE_ON_CLOSE);
/* Issue a notification */
if (TypeOfOpen == UserDirectoryOpen)
{
FsRtlNotifyFullChangeDirectory(Vcb->NotifySync,
&Vcb->NotifyList,
FileObject->FsContext,
NULL,
FALSE,
FALSE,
0,
NULL,
NULL,
NULL);
}
}
/* If file should be deleted, acquire locks */
if ((Fcb->UncleanCount == 1) &&
FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE) &&
(Fcb->Condition != FcbBad) &&
!FlagOn(Vcb->State, VCB_STATE_FLAG_WRITE_PROTECTED))
{
FatReleaseFcb(IrpContext, Fcb);
AcquiredFcb = FALSE;
(VOID)FatAcquireExclusiveVcb(IrpContext, Vcb);
AcquiredVcb = TRUE;
(VOID)FatAcquireExclusiveFcb(IrpContext, Fcb);
AcquiredFcb = TRUE;
}
}
/* Acquire VCB lock if it was a volume open */
if (TypeOfOpen == UserVolumeOpen)
{
(VOID)FatAcquireExclusiveVcb(IrpContext, Vcb);
AcquiredVcb = TRUE;
}
/* Cleanup all notifications */
if (TypeOfOpen == UserDirectoryOpen)
{
FsRtlNotifyCleanup(Vcb->NotifySync,
&Vcb->NotifyList,
Ccb);
}
if (Fcb)
{
//TODO: FatVerifyFcb
}
switch (TypeOfOpen)
{
case DirectoryFile:
case VirtualVolumeFile:
DPRINT1("Cleanup VirtualVolumeFile/DirectoryFile\n");
ShareAccess = NULL;
break;
case UserVolumeOpen:
DPRINT("Cleanup UserVolumeOpen\n");
if (FlagOn(Ccb->Flags, CCB_COMPLETE_DISMOUNT))
{
FatCheckForDismount( IrpContext, Vcb, TRUE );
} else if (FileObject->WriteAccess &&
FlagOn(FileObject->Flags, FO_FILE_MODIFIED))
{
UNIMPLEMENTED;
}
/* Release the volume and send notification */
if (FlagOn(Vcb->State, VCB_STATE_FLAG_LOCKED) &&
(Vcb->FileObjectWithVcbLocked == FileObject))
{
UNIMPLEMENTED;
SendUnlockNotification = TRUE;
}
ShareAccess = &Vcb->ShareAccess;
break;
case EaFile:
DPRINT1("Cleanup EaFileObject\n");
ShareAccess = NULL;
break;
case UserDirectoryOpen:
DPRINT("Cleanup UserDirectoryOpen\n");
ShareAccess = &Fcb->ShareAccess;
/* Should it be a delayed close? */
if ((Fcb->UncleanCount == 1) &&
(Fcb->OpenCount == 1) &&
(Fcb->Dcb.DirectoryFileOpenCount == 0) &&
!FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE) &&
Fcb->Condition == FcbGood)
{
/* Yes, a delayed one */
SetFlag(Fcb->State, FCB_STATE_DELAY_CLOSE);
}
if (VcbGood == Vcb->Condition)
{
//FatUpdateDirentFromFcb( IrpContext, FileObject, Fcb, Ccb );
//TODO: Actually update dirent
}
if ((Fcb->UncleanCount == 1) &&
(FatNodeType(Fcb) == FAT_NTC_DCB) &&
(FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE)) &&
(Fcb->Condition != FcbBad) &&
!FlagOn(Vcb->State, VCB_STATE_FLAG_WRITE_PROTECTED))
{
UNIMPLEMENTED;
}
/* Decrement unclean counter */
ASSERT(Fcb->UncleanCount != 0);
Fcb->UncleanCount--;
break;
case UserFileOpen:
DPRINT("Cleanup UserFileOpen\n");
ShareAccess = &Fcb->ShareAccess;
/* Should it be a delayed close? */
if ((FileObject->SectionObjectPointer->DataSectionObject == NULL) &&
(FileObject->SectionObjectPointer->ImageSectionObject == NULL) &&
(Fcb->UncleanCount == 1) &&
(Fcb->OpenCount == 1) &&
!FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE) &&
Fcb->Condition == FcbGood)
{
/* Yes, a delayed one */
//SetFlag(Fcb->State, FCB_STATE_DELAY_CLOSE);
DPRINT1("Setting a delay on close for some reason for FCB %p, FF handle %p, file name '%wZ'\n", Fcb, Fcb->FatHandle, &Fcb->FullFileName);
}
/* Unlock all file locks */
FsRtlFastUnlockAll(&Fcb->Fcb.Lock,
FileObject,
IoGetRequestorProcess(Irp),
NULL);
if (Vcb->Condition == VcbGood)
{
if (Fcb->Condition != FcbBad)
{
//FatUpdateDirentFromFcb( IrpContext, FileObject, Fcb, Ccb );
// TODO: Update on-disk structures
}
if (Fcb->UncleanCount == 1 &&
Fcb->Condition != FcbBad)
{
//DELETE_CONTEXT DeleteContext;
/* Should this file be deleted on close? */
if (FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE) &&
!FlagOn(Vcb->State, VCB_STATE_FLAG_WRITE_PROTECTED))
{
UNIMPLEMENTED;
}
else
{
if (!FlagOn(Fcb->State, FCB_STATE_PAGEFILE) &&
(Fcb->Header.ValidDataLength.LowPart < Fcb->Header.FileSize.LowPart))
{
#if 0
ULONG ValidDataLength;
ValidDataLength = Fcb->Header.ValidDataLength.LowPart;
if (ValidDataLength < Fcb->ValidDataToDisk) {
ValidDataLength = Fcb->ValidDataToDisk;
}
if (ValidDataLength < Fcb->Header.FileSize.LowPart)
{
FatZeroData( IrpContext,
Vcb,
FileObject,
ValidDataLength,
Fcb->Header.FileSize.LowPart -
ValidDataLength );
Fcb->ValidDataToDisk =
Fcb->Header.ValidDataLength.LowPart =
Fcb->Header.FileSize.LowPart;
if (CcIsFileCached(FileObject))
{
CcSetFileSizes(FileObject, (PCC_FILE_SIZES)&Fcb->Header.AllocationSize);
}
}
#endif
DPRINT1("Zeroing out data is not implemented\n");
}
}
/* Should the file be truncated on close? */
if (FlagOn(Fcb->State, FCB_STATE_TRUNCATE_ON_CLOSE))
{
if (Vcb->Condition == VcbGood)
{
// TODO: Actually truncate the file allocation
UNIMPLEMENTED;
}
/* Remove truncation flag */
Fcb->State &= ~FCB_STATE_TRUNCATE_ON_CLOSE;
}
/* Check again if it should be deleted */
if (FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE) &&
Fcb->Header.AllocationSize.LowPart == 0)
{
FatNotifyReportChange(IrpContext,
Vcb,
Fcb,
FILE_NOTIFY_CHANGE_FILE_NAME,
FILE_ACTION_REMOVED);
}
/* Remove the entry from the splay table if the file was deleted */
if (FlagOn(Fcb->State, FCB_STATE_DELETE_ON_CLOSE))
{
FatRemoveNames(IrpContext, Fcb);
}
}
}
ASSERT(Fcb->UncleanCount != 0);
Fcb->UncleanCount--;
if (!FlagOn(FileObject->Flags, FO_CACHE_SUPPORTED))
{
ASSERT(Fcb->NonCachedUncleanCount != 0);
Fcb->NonCachedUncleanCount--;
}
if (FlagOn(FileObject->Flags, FO_CACHE_SUPPORTED) &&
(Fcb->NonCachedUncleanCount != 0) &&
(Fcb->NonCachedUncleanCount == Fcb->UncleanCount) &&
(Fcb->SectionObjectPointers.DataSectionObject != NULL))
{
CcFlushCache(&Fcb->SectionObjectPointers, NULL, 0, NULL);
/* Acquire and release PagingIo to get in sync with lazy writer */
ExAcquireResourceExclusiveLite(Fcb->Header.PagingIoResource, TRUE);
ExReleaseResourceLite(Fcb->Header.PagingIoResource);
CcPurgeCacheSection(&Fcb->SectionObjectPointers,
NULL,
0,
FALSE);
}
if (Fcb->Condition == FcbBad)
{
//TruncateSize = &FatLargeZero;
UNIMPLEMENTED;
}
/* Cleanup the cache map */
CcUninitializeCacheMap(FileObject, TruncateSize, NULL);
break;
default:
KeBugCheckEx(FAT_FILE_SYSTEM, __LINE__, (ULONG_PTR)TypeOfOpen, 0, 0);
}
/* Cleanup the share access */
if (ShareAccess)
{
DPRINT("Cleaning up the share access\n");
IoRemoveShareAccess(FileObject, ShareAccess);
}
if (TypeOfOpen == UserFileOpen)
{
/* Update oplocks */
FsRtlCheckOplock(&Fcb->Fcb.Oplock,
Irp,
IrpContext,
NULL,
NULL);
Fcb->Header.IsFastIoPossible = FatIsFastIoPossible(Fcb);
}
/* Set the FO_CLEANUP_COMPLETE flag */
SetFlag(FileObject->Flags, FO_CLEANUP_COMPLETE);
Status = STATUS_SUCCESS;
// TODO: Unpin repinned BCBs
//FatUnpinRepinnedBcbs(IrpContext);
/* Flush the volume if necessary */
if (FlagOn(Vcb->State, VCB_STATE_FLAG_DEFERRED_FLUSH) &&
!FlagOn(Vcb->State, VCB_STATE_FLAG_WRITE_PROTECTED))
{
UNIMPLEMENTED;
}
/* Cleanup */
if (AcquiredFcb) FatReleaseFcb(IrpContext, Fcb);
if (AcquiredVcb) FatReleaseVcb(IrpContext, Vcb);
/* Send volume notification */
if (SendUnlockNotification)
FsRtlNotifyVolumeEvent(FileObject, FSRTL_VOLUME_UNLOCK);
return Status;
}
