1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/fsnotify_backend.h>
3 #include <linux/inotify.h>
4 #include <linux/slab.h> /* struct kmem_cache */
6 struct inotify_event_info {
7 struct fsnotify_event fse;
14 struct inotify_inode_mark {
15 struct fsnotify_mark fsn_mark;
19 static inline struct inotify_event_info *INOTIFY_E(struct fsnotify_event *fse)
21 return container_of(fse, struct inotify_event_info, fse);
25 * INOTIFY_USER_FLAGS represents all of the mask bits that we expose to
26 * userspace. There is at least one bit (FS_EVENT_ON_CHILD) which is
27 * used only internally to the kernel.
29 #define INOTIFY_USER_MASK (IN_ALL_EVENTS | IN_ONESHOT | IN_EXCL_UNLINK)
31 static inline __u32 inotify_mark_user_mask(struct fsnotify_mark *fsn_mark)
33 return fsn_mark->mask & INOTIFY_USER_MASK;
36 extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
37 struct fsnotify_group *group);
38 extern int inotify_handle_event(struct fsnotify_group *group,
40 struct fsnotify_mark *inode_mark,
41 struct fsnotify_mark *vfsmount_mark,
42 u32 mask, const void *data, int data_type,
43 const unsigned char *file_name, u32 cookie,
44 struct fsnotify_iter_info *iter_info);
46 extern const struct fsnotify_ops inotify_fsnotify_ops;
47 extern struct kmem_cache *inotify_inode_mark_cachep;
49 #ifdef CONFIG_INOTIFY_USER
50 static inline void dec_inotify_instances(struct ucounts *ucounts)
52 dec_ucount(ucounts, UCOUNT_INOTIFY_INSTANCES);
55 static inline struct ucounts *inc_inotify_watches(struct ucounts *ucounts)
57 return inc_ucount(ucounts->ns, ucounts->uid, UCOUNT_INOTIFY_WATCHES);
60 static inline void dec_inotify_watches(struct ucounts *ucounts)
62 dec_ucount(ucounts, UCOUNT_INOTIFY_WATCHES);