[PATCH] add a file_permission helper

A few more callers of permission() just want to check for a different access
pattern on an already open file.  This patch adds a wrapper for permission()
that takes a file in preparation of per-mount read-only support and to clean
up the callers a little.  The helper is not intended for new code, everything
without the interface set in stone should use vfs_permission()

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index dd1935d55424..28002de783b6 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3776,8 +3776,7 @@ static int floppy_open(struct inode *inode, struct file *filp)
         /* Allow ioctls if we have write-permissions even if read-only open.
          * Needed so that programs such as fdrawcmd still can work on write
          * protected disks */
-        if (filp->f_mode & 2
-            || permission(filp->f_dentry->d_inode, 2, NULL) == 0)
+        if ((filp->f_mode & FMODE_WRITE) || !file_permission(filp, MAY_WRITE))
                 filp->private_data = (void *)8;
 
         if (UFDCS->rawcmd == 1)