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authorDave Hansen <haveblue@us.ibm.com>2007-10-17 10:31:14 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 19:43:05 +0400
commitc7eb26678e59f16f4e84f1176d187cd21a27414d (patch)
treebf58c7f877846d204d417021b8608e1446bc3ea8
parentb41572e929221b0d87f529106cdf12185ee84bca (diff)
downloadlinux-c7eb26678e59f16f4e84f1176d187cd21a27414d.tar.xz
r/o bind mounts: give permission() a local 'mnt' variable
First of all, this makes the structure jumping look a little bit cleaner. So, this stands alone as a tiny cleanup. But, we also need 'mnt' by itself a few more times later in this series, so this isn't _just_ a cleanup. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/namei.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/namei.c b/fs/namei.c
index a29bb0f40ed5..464eeccb675b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -228,6 +228,10 @@ int generic_permission(struct inode *inode, int mask,
int permission(struct inode *inode, int mask, struct nameidata *nd)
{
int retval, submask;
+ struct vfsmount *mnt = NULL;
+
+ if (nd)
+ mnt = nd->mnt;
if (mask & MAY_WRITE) {
umode_t mode = inode->i_mode;
@@ -251,7 +255,7 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
* MAY_EXEC on regular files is denied if the fs is mounted
* with the "noexec" flag.
*/
- if (nd && nd->mnt && (nd->mnt->mnt_flags & MNT_NOEXEC))
+ if (mnt && (mnt->mnt_flags & MNT_NOEXEC))
return -EACCES;
}