mirror of
https://github.com/reactos/reactos.git
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141 lines
4 KiB
C
141 lines
4 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/fs/vfat/flush.c
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* PURPOSE: VFAT Filesystem
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* PROGRAMMER:
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*/
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/* INCLUDES *****************************************************************/
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#define NDEBUG
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#include "vfat.h"
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/* FUNCTIONS ****************************************************************/
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static NTSTATUS VfatFlushFile(PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb)
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{
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IO_STATUS_BLOCK IoStatus;
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NTSTATUS Status;
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DPRINT("VfatFlushFile(DeviceExt %p, Fcb %p) for '%wZ'\n", DeviceExt, Fcb, &Fcb->PathNameU);
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CcFlushCache(&Fcb->SectionObjectPointers, NULL, 0, &IoStatus);
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if (IoStatus.Status == STATUS_INVALID_PARAMETER)
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{
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/* FIXME: Caching was possible not initialized */
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IoStatus.Status = STATUS_SUCCESS;
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}
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if (Fcb->Flags & FCB_IS_DIRTY)
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{
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Status = VfatUpdateEntry(Fcb);
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if (!NT_SUCCESS(Status))
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{
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IoStatus.Status = Status;
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}
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}
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return IoStatus.Status;
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}
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NTSTATUS VfatFlushVolume(PDEVICE_EXTENSION DeviceExt, PVFATFCB VolumeFcb)
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{
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PLIST_ENTRY ListEntry;
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PVFATFCB Fcb;
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NTSTATUS Status, ReturnStatus = STATUS_SUCCESS;
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DPRINT("VfatFlushVolume(DeviceExt %p, FatFcb %p)\n", DeviceExt, VolumeFcb);
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ListEntry = DeviceExt->FcbListHead.Flink;
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while (ListEntry != &DeviceExt->FcbListHead)
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{
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Fcb = CONTAINING_RECORD(ListEntry, VFATFCB, FcbListEntry);
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ListEntry = ListEntry->Flink;
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if (!vfatFCBIsDirectory(Fcb))
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{
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ExAcquireResourceExclusiveLite(&Fcb->MainResource, TRUE);
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Status = VfatFlushFile(DeviceExt, Fcb);
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ExReleaseResourceLite (&Fcb->MainResource);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("VfatFlushFile failed, status = %x\n", Status);
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ReturnStatus = Status;
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}
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}
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/* FIXME: Stop flushing if this is a removable media and the media was removed */
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}
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ListEntry = DeviceExt->FcbListHead.Flink;
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while (ListEntry != &DeviceExt->FcbListHead)
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{
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Fcb = CONTAINING_RECORD(ListEntry, VFATFCB, FcbListEntry);
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ListEntry = ListEntry->Flink;
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if (vfatFCBIsDirectory(Fcb))
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{
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ExAcquireResourceExclusiveLite(&Fcb->MainResource, TRUE);
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Status = VfatFlushFile(DeviceExt, Fcb);
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ExReleaseResourceLite (&Fcb->MainResource);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("VfatFlushFile failed, status = %x\n", Status);
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ReturnStatus = Status;
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}
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}
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/* FIXME: Stop flushing if this is a removable media and the media was removed */
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}
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Fcb = (PVFATFCB) DeviceExt->FATFileObject->FsContext;
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ExAcquireResourceExclusiveLite(&DeviceExt->FatResource, TRUE);
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Status = VfatFlushFile(DeviceExt, Fcb);
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ExReleaseResourceLite(&DeviceExt->FatResource);
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/* FIXME: Flush the buffers from storage device */
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("VfatFlushFile failed, status = %x\n", Status);
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ReturnStatus = Status;
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}
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return ReturnStatus;
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}
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NTSTATUS VfatFlush(PVFAT_IRP_CONTEXT IrpContext)
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{
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NTSTATUS Status;
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PVFATFCB Fcb;
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/*
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* This request is not allowed on the main device object.
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*/
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if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
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{
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Status = STATUS_INVALID_DEVICE_REQUEST;
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goto ByeBye;
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}
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Fcb = (PVFATFCB)IrpContext->FileObject->FsContext;
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ASSERT(Fcb);
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if (Fcb->Flags & FCB_IS_VOLUME)
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{
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ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, TRUE);
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Status = VfatFlushVolume(IrpContext->DeviceExt, Fcb);
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ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
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}
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else
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{
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ExAcquireResourceExclusiveLite(&Fcb->MainResource, TRUE);
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Status = VfatFlushFile(IrpContext->DeviceExt, Fcb);
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ExReleaseResourceLite (&Fcb->MainResource);
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}
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ByeBye:
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IrpContext->Irp->IoStatus.Status = Status;
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IrpContext->Irp->IoStatus.Information = 0;
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IoCompleteRequest (IrpContext->Irp, IO_NO_INCREMENT);
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VfatFreeIrpContext(IrpContext);
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return (Status);
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}
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/* EOF */
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