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[fastfat_new]

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- Start implementing volume open requests.

svn path=/trunk/; revision=43397
This commit is contained in:
Aleksey Bragin 2009-10-12 13:17:56 +00:00
parent 6be2aea1b3
commit 0f711aae4c
2 changed files with 128 additions and 7 deletions
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125
reactos/drivers/filesystems/fastfat_new/create.c
View file

@ -113,6 +113,100 @@ FatiOpenExistingFile(IN PFAT_IRP_CONTEXT IrpContext,
return Iosb;
}
IO_STATUS_BLOCK
NTAPI
FatiOpenVolume(IN PFAT_IRP_CONTEXT IrpContext,
IN PFILE_OBJECT FileObject,
IN PVCB Vcb,
IN PACCESS_MASK DesiredAccess,
IN USHORT ShareAccess,
IN ULONG CreateDisposition)
{
PCCB Ccb;
IO_STATUS_BLOCK Iosb = {{0}};
BOOLEAN VolumeFlushed = FALSE;
/* Check parameters */
if (CreateDisposition != FILE_OPEN &&
CreateDisposition != FILE_OPEN_IF)
{
/* Deny access */
Iosb.Status = STATUS_ACCESS_DENIED;
}
/* Check if it's exclusive open */
if (!FlagOn(ShareAccess, FILE_SHARE_WRITE) &&
!FlagOn(ShareAccess, FILE_SHARE_DELETE))
{
// TODO: Check if exclusive read access requested
// and opened handles count is not 0
//if (!FlagOn(ShareAccess, FILE_SHARE_READ)
DPRINT1("Exclusive voume open\n");
// TODO: Flush the volume
VolumeFlushed = TRUE;
}
else if (FlagOn(*DesiredAccess, FILE_READ_DATA | FILE_WRITE_DATA | FILE_APPEND_DATA))
{
DPRINT1("Shared open\n");
// TODO: Flush the volume
VolumeFlushed = TRUE;
}
if (VolumeFlushed &&
!FlagOn(Vcb->State, VCB_STATE_MOUNTED_DIRTY) &&
FlagOn(Vcb->State, VCB_STATE_FLAG_DIRTY) &&
CcIsThereDirtyData(Vcb->Vpb))
{
UNIMPLEMENTED;
}
/* Set share access */
if (Vcb->DirectOpenCount > 0)
{
/* This volume has already been opened */
Iosb.Status = IoCheckShareAccess(*DesiredAccess,
ShareAccess,
FileObject,
&Vcb->ShareAccess,
TRUE);
if (!NT_SUCCESS(Iosb.Status))
{
ASSERT(FALSE);
}
}
else
{
/* This is the first time open */
IoSetShareAccess(*DesiredAccess,
ShareAccess,
FileObject,
&Vcb->ShareAccess);
}
/* Set file object pointers */
Ccb = FatCreateCcb(IrpContext);
FatSetFileObject(FileObject, UserVolumeOpen, Vcb, Ccb);
FileObject->SectionObjectPointer = &Vcb->SectionObjectPointers;
/* Increase direct open count */
Vcb->DirectOpenCount++;
Vcb->OpenFileCount++;
/* Set no buffering flag */
FileObject->Flags |= FO_NO_INTERMEDIATE_BUFFERING;
// TODO: User's access check
Iosb.Status = STATUS_SUCCESS;
Iosb.Information = FILE_OPENED;
return Iosb;
}
NTSTATUS
NTAPI
FatiCreate(IN PFAT_IRP_CONTEXT IrpContext,
@ -297,17 +391,36 @@ FatiCreate(IN PFAT_IRP_CONTEXT IrpContext,
if (!RelatedFO ||
FatDecodeFileObject(RelatedFO, &DecodedVcb, &Fcb, &Ccb) == UserVolumeOpen)
{
/* Check parameters */
if (DirectoryFile || OpenTargetDirectory)
{
Status = DirectoryFile ? STATUS_NOT_A_DIRECTORY : STATUS_INVALID_PARAMETER;
/* Unlock VCB */
FatReleaseVcb(IrpContext, Vcb);
/* Complete the request and return */
FatCompleteRequest(IrpContext, Irp, Status);
return Status;
}
/* It is indeed a volume open request */
DPRINT1("Volume open request, not implemented now!\n");
UNIMPLEMENTED;
Iosb = FatiOpenVolume(IrpContext,
FileObject,
Vcb,
DesiredAccess,
ShareAccess,
CreateDisposition);
/* Set resulting information */
Irp->IoStatus.Information = Iosb.Information;
/* Unlock VCB */
FatReleaseVcb(IrpContext, Vcb);
/* Complete the request */
FatCompleteRequest(IrpContext, Irp, STATUS_NOT_IMPLEMENTED);
return STATUS_NOT_IMPLEMENTED;
/* Complete the request and return */
FatCompleteRequest(IrpContext, Irp, Iosb.Status);
return Iosb.Status;
}
}

10
reactos/drivers/filesystems/fastfat_new/fatstruc.h
View file

@ -133,7 +133,9 @@ typedef struct _FAT_METHODS {
PFAT_SETFAT_VALUE_RUN_ROUTINE SetValueRun;
} FAT_METHODS, *PFAT_METHODS;
#define VCB_STATE_FLAG_LOCKED 0x01
#define VCB_STATE_FLAG_LOCKED 0x01
#define VCB_STATE_FLAG_DIRTY 0x02
#define VCB_STATE_MOUNTED_DIRTY 0x04
typedef enum _VCB_CONDITION
{
@ -157,6 +159,10 @@ typedef struct _VCB
VCB_CONDITION Condition;
ERESOURCE Resource;
/* Direct volume access */
ULONG DirectOpenCount;
SHARE_ACCESS ShareAccess;
/* Notifications support */
PNOTIFY_SYNC NotifySync;
LIST_ENTRY NotifyList;
@ -179,7 +185,9 @@ typedef struct _VCB
/* Root Directory Control block */
struct _FCB *RootDcb;
/* Counters */
ULONG MediaChangeCount;
ULONG OpenFileCount;
/* FullFAT integration */
FF_IOMAN *Ioman;