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| author | Lino Sanfilippo <LinoSanfilippo@gmx.de> | 2010-11-05 17:05:27 +0100 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2010-12-07 16:14:21 -0500 |
| commit | b1085ba80cd2784400a7beec3fda5099198ed01c (patch) | |
| tree | c83530f7d7f161c898d464fc1ce65be38a0268c1 /include/linux | |
| parent | 88d60c32765716289abeb362c44adf6c35c6824c (diff) | |
| download | linux-3.10-b1085ba80cd2784400a7beec3fda5099198ed01c.tar.gz linux-3.10-b1085ba80cd2784400a7beec3fda5099198ed01c.tar.bz2 linux-3.10-b1085ba80cd2784400a7beec3fda5099198ed01c.zip | |
fanotify: if set by user unset FMODE_NONOTIFY before fsnotify_perm() is called
Unsetting FMODE_NONOTIFY in fsnotify_open() is too late, since fsnotify_perm()
is called before. If FMODE_NONOTIFY is set fsnotify_perm() will skip permission
checks, so a user can still disable permission checks by setting this flag
in an open() call.
This patch corrects this by unsetting the flag before fsnotify_perm is called.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/fsnotify.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index 5c185fa2708..b10bcdeaef7 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -235,9 +235,6 @@ static inline void fsnotify_open(struct file *file) if (S_ISDIR(inode->i_mode)) mask |= FS_ISDIR; - /* FMODE_NONOTIFY must never be set from user */ - file->f_mode &= ~FMODE_NONOTIFY; - fsnotify_parent(path, NULL, mask); fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0); } |