[FASTFAT]

Properly check for volume open on lock request

svn path=/trunk/; revision=65309

diff --git a/reactos/drivers/filesystems/fastfat/fsctl.c b/reactos/drivers/filesystems/fastfat/fsctl.c
index ab9d3af..e27f8e8 100644 (file)
--- a/reactos/drivers/filesystems/fastfat/fsctl.c
+++ b/reactos/drivers/filesystems/fastfat/fsctl.c
@@ -865,14 +865,16 @@ VfatLockOrUnlockVolume(
 {
     PFILE_OBJECT FileObject;
     PDEVICE_EXTENSION DeviceExt;
 {
     PFILE_OBJECT FileObject;
     PDEVICE_EXTENSION DeviceExt;

+    PVFATFCB Fcb;

 
     DPRINT("VfatLockOrUnlockVolume(%p, %d)\n", IrpContext, Lock);
 
     DeviceExt = IrpContext->DeviceExt;
     FileObject = IrpContext->FileObject;
 
     DPRINT("VfatLockOrUnlockVolume(%p, %d)\n", IrpContext, Lock);
 
     DeviceExt = IrpContext->DeviceExt;
     FileObject = IrpContext->FileObject;

+    Fcb = FileObject->FsContext;

 
     /* Only allow locking with the volume open */
 
     /* Only allow locking with the volume open */

-    if (FileObject->FsContext != DeviceExt->VolumeFcb)
+    if (!(Fcb->Flags & FCB_IS_VOLUME))

     {
         return STATUS_ACCESS_DENIED;
     }
     {
         return STATUS_ACCESS_DENIED;
     }