inotify: fix check for one-shot watches before destroying them

As the IN_ONESHOT bit is never set when an event is sent we must check it
in the watch's mask and not in the event's mask.

Signed-off-by: Ulisses Furquim <ulissesf@gmail.com>
Reported-by: "Clem Taylor" <clem.taylor@gmail.com>
Tested-by: "Clem Taylor" <clem.taylor@gmail.com>
Cc: Amy Griffis <amy.griffis@hp.com>
Cc: Robert Love <rlove@google.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index a336c97..3ab09a6 100644 (file)
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -283,7 +283,7 @@ static void inotify_dev_queue_event(struct inotify_watch *w, u32 wd, u32 mask,
        /* we can safely put the watch as we don't reference it while
         * generating the event
         */
-       if (mask & IN_IGNORED || mask & IN_ONESHOT)
+       if (mask & IN_IGNORED || w->mask & IN_ONESHOT)
                put_inotify_watch(w); /* final put */
 
        /* coalescing: drop this event if it is a dupe of the previous */