1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/fsnotify_backend.h>
3 #include <linux/path.h>
4 #include <linux/slab.h>
6 extern struct kmem_cache *fanotify_mark_cache;
7 extern struct kmem_cache *fanotify_event_cachep;
8 extern struct kmem_cache *fanotify_perm_event_cachep;
11 * Structure for normal fanotify events. It gets allocated in
12 * fanotify_handle_event() and freed when the information is retrieved by
15 struct fanotify_event_info {
16 struct fsnotify_event fse;
18 * We hold ref to this path so it may be dereferenced at any point
19 * during this object's lifetime
25 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
27 * Structure for permission fanotify events. It gets allocated and freed in
28 * fanotify_handle_event() since we wait there for user response. When the
29 * information is retrieved by userspace the structure is moved from
30 * group->notification_list to group->fanotify_data.access_list to wait for
33 struct fanotify_perm_event_info {
34 struct fanotify_event_info fae;
35 int response; /* userspace answer to question */
36 int fd; /* fd we passed to userspace for this event */
39 static inline struct fanotify_perm_event_info *
40 FANOTIFY_PE(struct fsnotify_event *fse)
42 return container_of(fse, struct fanotify_perm_event_info, fae.fse);
46 static inline struct fanotify_event_info *FANOTIFY_E(struct fsnotify_event *fse)
48 return container_of(fse, struct fanotify_event_info, fse);
51 struct fanotify_event_info *fanotify_alloc_event(struct inode *inode, u32 mask,
52 const struct path *path);