1 #ifndef __FS_NOTIFY_FSNOTIFY_H_
2 #define __FS_NOTIFY_FSNOTIFY_H_
4 #include <linux/list.h>
5 #include <linux/fsnotify.h>
6 #include <linux/srcu.h>
7 #include <linux/types.h>
11 /* destroy all events sitting in this groups notification queue */
12 extern void fsnotify_flush_notify(struct fsnotify_group *group);
14 /* protects reads of inode and vfsmount marks list */
15 extern struct srcu_struct fsnotify_mark_srcu;
17 /* Calculate mask of events for a list of marks */
18 extern u32 fsnotify_recalc_mask(struct hlist_head *head);
20 /* compare two groups for sorting of marks lists */
21 extern int fsnotify_compare_groups(struct fsnotify_group *a,
22 struct fsnotify_group *b);
24 extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
26 /* Add mark to a proper place in mark list */
27 extern int fsnotify_add_mark_list(struct hlist_head *head,
28 struct fsnotify_mark *mark,
30 /* add a mark to an inode */
31 extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
32 struct fsnotify_group *group, struct inode *inode,
34 /* add a mark to a vfsmount */
35 extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
36 struct fsnotify_group *group, struct vfsmount *mnt,
39 /* vfsmount specific destruction of a mark */
40 extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
41 /* inode specific destruction of a mark */
42 extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
43 /* Find mark belonging to given group in the list of marks */
44 extern struct fsnotify_mark *fsnotify_find_mark(struct hlist_head *head,
45 struct fsnotify_group *group);
46 /* Destroy all marks in the given list protected by 'lock' */
47 extern void fsnotify_destroy_marks(struct hlist_head *head, spinlock_t *lock);
48 /* run the list of all marks associated with inode and destroy them */
49 static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
51 fsnotify_destroy_marks(&inode->i_fsnotify_marks, &inode->i_lock);
53 /* run the list of all marks associated with vfsmount and destroy them */
54 static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
56 fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks,
57 &mnt->mnt_root->d_lock);
59 /* prepare for freeing all marks associated with given group */
60 extern void fsnotify_detach_group_marks(struct fsnotify_group *group);
62 * wait for fsnotify_mark_srcu period to end and free all marks in destroy_list
64 extern void fsnotify_mark_destroy_list(void);
67 * update the dentry->d_flags of all of inode's children to indicate if inode cares
68 * about events that happen to its children.
70 extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
72 /* allocate and destroy and event holder to attach events to notification/access queues */
73 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
74 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
76 #endif /* __FS_NOTIFY_FSNOTIFY_H_ */