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Alex Vlasov

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- Implement FatRead as a wrapper around internal helper FatiRead.
- Stubplement FatiRead.

svn path=/trunk/; revision=39029
This commit is contained in:
Aleksey Bragin 2009-01-23 09:41:30 +00:00
parent d86e5e4347
commit 093e6f6d3c
1 changed files with 58 additions and 1 deletions
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59
reactos/drivers/filesystems/fastfat_new/rw.c
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@ -4,6 +4,7 @@
* FILE: drivers/filesystems/fastfat/rw.c
* PURPOSE: Read/write support
* PROGRAMMERS: Aleksey Bragin (aleksey@reactos.org)
* Alexey Vlasov
*/
/* INCLUDES *****************************************************************/
@ -13,12 +14,68 @@
/* FUNCTIONS *****************************************************************/
NTSTATUS
NTAPI
FatiRead(PFAT_IRP_CONTEXT IrpContext)
{
CSHORT FcbType;
ULONG NumberOfBytes;
FcbType = *((PCSHORT) IrpContext->FileObject->FsContext);
NumberOfBytes = IrpContext->Stack->Parameters.Read.Length;
if (NumberOfBytes == 0)
{
FatCompleteRequest(IrpContext, IrpContext->Irp, STATUS_SUCCESS);
return STATUS_SUCCESS;
}
//if (FcbType == FAT_NTC_VCB)
DPRINT1("FatiRead()\n");
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
FatRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
NTSTATUS Status;
BOOLEAN TopLevel, CanWait;
PFAT_IRP_CONTEXT IrpContext;
CanWait = TRUE;
TopLevel = FALSE;
Status = STATUS_INVALID_DEVICE_REQUEST;
/* Get CanWait flag */
if (IoGetCurrentIrpStackLocation(Irp)->FileObject != NULL)
CanWait = IoIsOperationSynchronous(Irp);
/* Enter FsRtl critical region */
FsRtlEnterFileSystem();
if (DeviceObject != FatGlobalData.DiskDeviceObject)
{
/* Set Top Level IRP if not set */
if (IoGetTopLevelIrp() == NULL)
{
IoSetTopLevelIrp(Irp);
TopLevel = TRUE;
}
/* Build an irp context */
IrpContext = FatBuildIrpContext(Irp, CanWait);
/* Perform the actual read */
Status = FatiRead(IrpContext);
/* Restore top level Irp */
if (TopLevel)
IoSetTopLevelIrp(NULL);
}
/* Leave FsRtl critical region */
FsRtlExitFileSystem();
DPRINT1("FatRead()\n");
return STATUS_NOT_IMPLEMENTED;
return Status;
}
NTSTATUS