mirror of
https://github.com/reactos/reactos.git
synced 2024-07-06 04:35:07 +00:00
c5a35ecd37
This is a PoC of what it's possible to realize thanks to an already existing hack in ntoskrnl :-). With this extension, on the kdb:> prompt, you're able to type in commands that will be handled by the FastFAT driver and not by the kernel, allowing internal debug, not possible otherwise. So far, three commands exist: - ?fat.vols: lists all the mounted volumes by FastFAT - ?fat.files: lists all the files on a specific volume (with their attributes) - ?fat.setdbgfile: allows watching on specifics files lifetime This is obviously only the begin and could be greatly improved. For instance, this is what allowed to debug CORE-14557
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* FILE: drivers/filesystems/fastfat/close.c
|
|
* PURPOSE: VFAT Filesystem
|
|
* PROGRAMMER: Jason Filby (jasonfilby@yahoo.com)
|
|
*/
|
|
|
|
/* INCLUDES *****************************************************************/
|
|
|
|
#include "vfat.h"
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* FUNCTIONS ****************************************************************/
|
|
|
|
/*
|
|
* FUNCTION: Closes a file
|
|
*/
|
|
NTSTATUS
|
|
VfatCloseFile(
|
|
PDEVICE_EXTENSION DeviceExt,
|
|
PFILE_OBJECT FileObject)
|
|
{
|
|
PVFATFCB pFcb;
|
|
PVFATCCB pCcb;
|
|
BOOLEAN IsVolume;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
|
|
DPRINT("VfatCloseFile(DeviceExt %p, FileObject %p)\n",
|
|
DeviceExt, FileObject);
|
|
|
|
/* FIXME : update entry in directory? */
|
|
pCcb = (PVFATCCB) (FileObject->FsContext2);
|
|
pFcb = (PVFATFCB) (FileObject->FsContext);
|
|
|
|
if (pFcb == NULL)
|
|
{
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
IsVolume = BooleanFlagOn(pFcb->Flags, FCB_IS_VOLUME);
|
|
if (IsVolume)
|
|
{
|
|
DPRINT("Volume\n");
|
|
FileObject->FsContext2 = NULL;
|
|
}
|
|
else
|
|
{
|
|
#ifdef KDBG
|
|
pFcb->Flags |= FCB_CLOSED;
|
|
#endif
|
|
vfatReleaseFCB(DeviceExt, pFcb);
|
|
}
|
|
|
|
FileObject->FsContext2 = NULL;
|
|
FileObject->FsContext = NULL;
|
|
FileObject->SectionObjectPointer = NULL;
|
|
|
|
if (pCcb)
|
|
{
|
|
vfatDestroyCCB(pCcb);
|
|
}
|
|
|
|
#ifdef ENABLE_SWAPOUT
|
|
if (IsVolume && DeviceExt->OpenHandleCount == 0)
|
|
{
|
|
VfatCheckForDismount(DeviceExt, FALSE);
|
|
}
|
|
#endif
|
|
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
* FUNCTION: Closes a file
|
|
*/
|
|
NTSTATUS
|
|
VfatClose(
|
|
PVFAT_IRP_CONTEXT IrpContext)
|
|
{
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("VfatClose(DeviceObject %p, Irp %p)\n", IrpContext->DeviceObject, IrpContext->Irp);
|
|
|
|
if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
|
|
{
|
|
DPRINT("Closing file system\n");
|
|
IrpContext->Irp->IoStatus.Information = 0;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
if (!ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
|
|
{
|
|
return VfatMarkIrpContextForQueue(IrpContext);
|
|
}
|
|
|
|
Status = VfatCloseFile(IrpContext->DeviceExt, IrpContext->FileObject);
|
|
ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
|
|
|
|
IrpContext->Irp->IoStatus.Information = 0;
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|