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- Lock the MainResource if we overwrite or supersede an existing file.

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- Use given allocation size, if we overwrite or supersede an existing file.

svn path=/trunk/; revision=19689
This commit is contained in:
Hartmut Birr 2005-11-27 15:44:36 +00:00
parent 420ab98250
commit 2229e54a12
1 changed files with 12 additions and 15 deletions
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27
reactos/drivers/fs/vfat/create.c
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@ -442,7 +442,6 @@ VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
PVFATFCB ParentFcb; PVFATFCB ParentFcb;
PWCHAR c, last; PWCHAR c, last;
BOOLEAN PagingFileCreate = FALSE; BOOLEAN PagingFileCreate = FALSE;
LARGE_INTEGER AllocationSize;
BOOLEAN Dots; BOOLEAN Dots;
UNICODE_STRING FileNameU; UNICODE_STRING FileNameU;
UNICODE_STRING PathNameU; UNICODE_STRING PathNameU;
@ -565,9 +564,9 @@ VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
if (!NT_SUCCESS (Status)) if (!NT_SUCCESS (Status))
{ {
if (RequestedDisposition == FILE_CREATE || if (RequestedDisposition == FILE_CREATE ||
RequestedDisposition == FILE_OPEN_IF || RequestedDisposition == FILE_OPEN_IF ||
RequestedDisposition == FILE_OVERWRITE_IF || RequestedDisposition == FILE_OVERWRITE_IF ||
RequestedDisposition == FILE_SUPERSEDE) RequestedDisposition == FILE_SUPERSEDE)
{ {
ULONG Attributes; ULONG Attributes;
Attributes = Stack->Parameters.Create.FileAttributes; Attributes = Stack->Parameters.Create.FileAttributes;
@ -586,7 +585,6 @@ VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
} }
Irp->IoStatus.Information = FILE_CREATED; Irp->IoStatus.Information = FILE_CREATED;
VfatSetAllocationSizeInformation(FileObject, VfatSetAllocationSizeInformation(FileObject,
pFcb, pFcb,
DeviceExt, DeviceExt,
@ -691,13 +689,15 @@ VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
if (RequestedDisposition == FILE_OVERWRITE || if (RequestedDisposition == FILE_OVERWRITE ||
RequestedDisposition == FILE_OVERWRITE_IF) RequestedDisposition == FILE_OVERWRITE_IF ||
RequestedDisposition == FILE_SUPERSEDE)
{ {
AllocationSize.QuadPart = 0; ExAcquireResourceExclusiveLite(&(pFcb->MainResource), TRUE);
Status = VfatSetAllocationSizeInformation (FileObject, Status = VfatSetAllocationSizeInformation (FileObject,
pFcb, pFcb,
DeviceExt, DeviceExt,
&AllocationSize); &Irp->Overlay.AllocationSize);
ExReleaseResourceLite(&(pFcb->MainResource));
if (!NT_SUCCESS (Status)) if (!NT_SUCCESS (Status))
{ {
VfatCloseFile (DeviceExt, FileObject); VfatCloseFile (DeviceExt, FileObject);
@ -705,15 +705,12 @@ VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
} }
} }
/* Supersede the file */
if (RequestedDisposition == FILE_SUPERSEDE) if (RequestedDisposition == FILE_SUPERSEDE)
{ {
AllocationSize.QuadPart = 0;
VfatSetAllocationSizeInformation(FileObject, pFcb, DeviceExt, &AllocationSize);
Irp->IoStatus.Information = FILE_SUPERSEDED; Irp->IoStatus.Information = FILE_SUPERSEDED;
} }
else if (RequestedDisposition == FILE_OVERWRITE || RequestedDisposition == FILE_OVERWRITE_IF) else if (RequestedDisposition == FILE_OVERWRITE ||
RequestedDisposition == FILE_OVERWRITE_IF)
{ {
Irp->IoStatus.Information = FILE_OVERWRITTEN; Irp->IoStatus.Information = FILE_OVERWRITTEN;
} }