diff options
| author | Jan Kara <jack@suse.cz> | 2014-01-28 21:53:22 +0400 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2014-01-29 16:57:10 +0400 |
| commit | 83c0e1b442b488571f4fef4a91c2fe52eed6c705 (patch) | |
| tree | b29a85223f2e5e166f075266edb1bf2e0ef5cf57 /include/linux | |
| parent | 13116dfd13c8c9d60ea04ece13419af2de8e2e37 (diff) | |
| download | linux-83c0e1b442b488571f4fef4a91c2fe52eed6c705.tar.xz | |
fsnotify: Do not return merged event from fsnotify_add_notify_event()
The event returned from fsnotify_add_notify_event() cannot ever be used
safely as the event may be freed by the time the function returns (after
dropping notification_mutex). So change the prototype to just return
whether the event was added or merged into some existing event.
Reported-and-tested-by: Jiri Kosina <jkosina@suse.cz>
Reported-and-tested-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/fsnotify_backend.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 7d8d5e608594..3d286ff49ab0 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -322,10 +322,10 @@ extern int fsnotify_fasync(int fd, struct file *file, int on); extern void fsnotify_destroy_event(struct fsnotify_group *group, struct fsnotify_event *event); /* attach the event to the group notification queue */ -extern struct fsnotify_event *fsnotify_add_notify_event(struct fsnotify_group *group, - struct fsnotify_event *event, - struct fsnotify_event *(*merge)(struct list_head *, - struct fsnotify_event *)); +extern int fsnotify_add_notify_event(struct fsnotify_group *group, + struct fsnotify_event *event, + int (*merge)(struct list_head *, + struct fsnotify_event *)); /* true if the group notification queue is empty */ extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group); /* return, but do not dequeue the first event on the notification queue */ |