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 extern struct kmem_cache *fanotify_perm_event_cachep; 7 8 /* 9 * Structure for normal fanotify events. It gets allocated in 10 * fanotify_handle_event() and freed when the information is retrieved by 11 * userspace 12 */ 13 struct fanotify_event_info { 14 struct fsnotify_event fse; 15 /* 16 * We hold ref to this path so it may be dereferenced at any point 17 * during this object's lifetime 18 */ 19 struct path path; 20 struct pid *tgid; 21 }; 22 23 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS 24 /* 25 * Structure for permission fanotify events. It gets allocated and freed in 26 * fanotify_handle_event() since we wait there for user response. When the 27 * information is retrieved by userspace the structure is moved from 28 * group->notification_list to group->fanotify_data.access_list to wait for 29 * user response. 30 */ 31 struct fanotify_perm_event_info { 32 struct fanotify_event_info fae; 33 int response; /* userspace answer to question */ 34 int fd; /* fd we passed to userspace for this event */ 35 }; 36 37 static inline struct fanotify_perm_event_info * 38 FANOTIFY_PE(struct fsnotify_event *fse) 39 { 40 return container_of(fse, struct fanotify_perm_event_info, fae.fse); 41 } 42 #endif 43 44 static inline struct fanotify_event_info *FANOTIFY_E(struct fsnotify_event *fse) 45 { 46 return container_of(fse, struct fanotify_event_info, fse); 47 } 48 49 struct fanotify_event_info *fanotify_alloc_event(struct inode *inode, u32 mask, 50 struct path *path); 51