fs/notify/fanotify/fanotify_user.c: fix FAN_MARK_FLUSH flag checking
If fanotify_mark is called with illegal value of arguments flags and
marks it usually returns EINVAL.
When fanotify_mark is called with FAN_MARK_FLUSH the argument flags is
not checked for irrelevant flags like FAN_MARK_IGNORED_MASK.
The patch removes this inconsistency.
If an irrelevant flag is set error EINVAL is returned.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index f6ac6a2..9163a6e 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -776,7 +776,10 @@
case FAN_MARK_REMOVE:
if (!mask)
return -EINVAL;
+ break;
case FAN_MARK_FLUSH:
+ if (flags & ~(FAN_MARK_MOUNT | FAN_MARK_FLUSH))
+ return -EINVAL;
break;
default:
return -EINVAL;
