fs/notify/fanotify/fanotify.h

   1 #include <linux/fsnotify_backend.h>
   2 #include <linux/path.h>
   3 #include <linux/slab.h>
   4
   5 extern struct kmem_cache *fanotify_event_cachep;
   6
   7 /*
   8  * Lifetime of the structure differs for normal and permission events. In both
   9  * cases the structure is allocated in fanotify_handle_event(). For normal
  10  * events the structure is freed immediately after reporting it to userspace.
  11  * For permission events we free it only after we receive response from
  12  * userspace.
  13  */
  14 struct fanotify_event_info {
  15         struct fsnotify_event fse;
  16         /*
  17          * We hold ref to this path so it may be dereferenced at any point
  18          * during this object's lifetime
  19          */
  20         struct path path;
  21         struct pid *tgid;
  22 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
  23         u32 response;   /* userspace answer to question */
  24 #endif
  25 };
  26
  27 static inline struct fanotify_event_info *FANOTIFY_E(struct fsnotify_event *fse)
  28 {
  29         return container_of(fse, struct fanotify_event_info, fse);
  30 }