fsnotify: implement ordering between notifiers

[net-next-2.6.git] / include / linux / fsnotify_backend.h

diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index e40190d1687813d5c86e2a1b9e414e48fcf22595..825329534162613362f07830cd60ba95bd0fd2c9 100644 (file)
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -129,6 +129,14 @@ struct fsnotify_group {
        wait_queue_head_t notification_waitq;   /* read() on the notification file blocks on this waitq */
        unsigned int q_len;                     /* events on the queue */
        unsigned int max_events;                /* maximum events allowed on the list */
+       /*
+        * Valid fsnotify group priorities.  Events are send in order from highest
+        * priority to lowest priority.  We default to the lowest priority.
+        */
+       #define FS_PRIO_0       0 /* normal notifiers, no permissions */
+       #define FS_PRIO_1       1 /* fanotify content based access control */
+       #define FS_PRIO_2       2 /* fanotify pre-content access */
+       unsigned int priority;
 
        /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */
        spinlock_t mark_lock;           /* protect marks_list */