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[NPFS]

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Add an FCB that represents the file system (volume/device) and support absolute and relative open, cleanup and close.

svn path=/trunk/; revision=49713
This commit is contained in:
Eric Kohl 2010-11-22 23:08:11 +00:00
parent e69e3b27ee
commit d828ba929b
3 changed files with 78 additions and 3 deletions
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70
reactos/drivers/filesystems/npfs/create.c
View file

@ -105,6 +105,35 @@ NpfsSignalAndRemoveListeningServerInstance(PNPFS_FCB Fcb,
}
static VOID
NpfsOpenFileSystem(PNPFS_FCB Fcb,
PFILE_OBJECT FileObject,
PIO_STATUS_BLOCK IoStatus)
{
PNPFS_CCB Ccb;
DPRINT("NpfsOpenFileSystem()\n");
Ccb = ExAllocatePool(NonPagedPool, sizeof(NPFS_CCB));
if (Ccb == NULL)
{
IoStatus->Status = STATUS_NO_MEMORY;
return;
}
Ccb->Type = CCB_DEVICE;
Ccb->Fcb = Fcb;
FileObject->FsContext = Fcb;
FileObject->FsContext2 = Ccb;
IoStatus->Information = FILE_OPENED;
IoStatus->Status = STATUS_SUCCESS;
return;
}
static VOID
NpfsOpenRootDirectory(PNPFS_FCB Fcb,
PFILE_OBJECT FileObject,
@ -174,6 +203,24 @@ NpfsCreate(PDEVICE_OBJECT DeviceObject,
}
#endif
DPRINT("FileName->Length: %hu RelatedFileObject: %p\n", FileName->Length, RelatedFileObject);
/* Open the file system */
if (FileName->Length == 0 &&
(RelatedFileObject == NULL || ((PNPFS_CCB)RelatedFileObject->FsContext2)->Type == CCB_DEVICE))
{
DPRINT("Open the file system\n");
NpfsOpenFileSystem(Vcb->DeviceFcb,
FileObject,
&Irp->IoStatus);
Status = Irp->IoStatus.Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Status;
}
/* Open the root directory */
if (FileName->Length == 2 && FileName->Buffer[0] == L'\\' && RelatedFileObject == NULL)
{
DPRINT("Open the root directory\n");
@ -662,6 +709,15 @@ NpfsCleanup(PDEVICE_OBJECT DeviceObject,
return STATUS_SUCCESS;
}
if (Ccb->Type == CCB_DEVICE)
{
DPRINT("Cleanup the file system!\n");
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
if (Ccb->Type == CCB_DIRECTORY)
{
DPRINT("Cleanup the root directory!\n");
@ -806,6 +862,20 @@ NpfsClose(PDEVICE_OBJECT DeviceObject,
return STATUS_SUCCESS;
}
if (Ccb->Type == CCB_DEVICE)
{
DPRINT("Closing the file system!\n");
ExFreePool(Ccb);
FileObject->FsContext = NULL;
FileObject->FsContext2 = NULL;
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
if (Ccb->Type == CCB_DIRECTORY)
{
DPRINT("Closing the root directory!\n");

10
reactos/drivers/filesystems/npfs/npfs.c
View file

@ -85,12 +85,16 @@ DriverEntry(PDRIVER_OBJECT DriverObject,
Vcb->DefaultQuota = 8 * PAGE_SIZE;
Vcb->MaxQuota = 64 * PAGE_SIZE;
/* Create the device FCB */
Fcb = ExAllocatePool(NonPagedPool, sizeof(NPFS_FCB));
Fcb->Type = FCB_DEVICE;
Fcb->Vcb = Vcb;
Vcb->DeviceFcb = Fcb;
/* Create the root directory FCB */
Fcb = ExAllocatePool(NonPagedPool, sizeof(NPFS_FCB));
Fcb->Type = FCB_DIRECTORY;
Fcb->Vcb = Vcb;
Vcb->RootFcb = Fcb;
return STATUS_SUCCESS;

1
reactos/drivers/filesystems/npfs/npfs.h
View file

@ -28,6 +28,7 @@ typedef struct _NPFS_VCB
ULONG MinQuota;
ULONG DefaultQuota;
ULONG MaxQuota;
struct _NPFS_FCB *DeviceFcb;
struct _NPFS_FCB *RootFcb;
} NPFS_VCB, *PNPFS_VCB;