1#ifndef __FS_NOTIFY_FSNOTIFY_H_
2#define __FS_NOTIFY_FSNOTIFY_H_
3
4#include <linux/list.h>
5#include <linux/fsnotify.h>
6#include <linux/srcu.h>
7#include <linux/types.h>
8
9/* destroy all events sitting in this groups notification queue */
10extern void fsnotify_flush_notify(struct fsnotify_group *group);
11
12/* protects reads of inode and vfsmount marks list */
13extern struct srcu_struct fsnotify_mark_srcu;
14
15/* Calculate mask of events for a list of marks */
16extern u32 fsnotify_recalc_mask(struct hlist_head *head);
17
18/* compare two groups for sorting of marks lists */
19extern int fsnotify_compare_groups(struct fsnotify_group *a,
20				   struct fsnotify_group *b);
21
22extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
23						__u32 mask);
24/* Add mark to a proper place in mark list */
25extern int fsnotify_add_mark_list(struct hlist_head *head,
26				  struct fsnotify_mark *mark,
27				  int allow_dups);
28/* add a mark to an inode */
29extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
30				   struct fsnotify_group *group, struct inode *inode,
31				   int allow_dups);
32/* add a mark to a vfsmount */
33extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
34				      struct fsnotify_group *group, struct vfsmount *mnt,
35				      int allow_dups);
36
37/* vfsmount specific destruction of a mark */
38extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
39/* inode specific destruction of a mark */
40extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
41/* Destroy all marks in the given list */
42extern void fsnotify_destroy_marks(struct list_head *to_free);
43/* Find mark belonging to given group in the list of marks */
44extern struct fsnotify_mark *fsnotify_find_mark(struct hlist_head *head,
45						struct fsnotify_group *group);
46/* run the list of all marks associated with inode and flag them to be freed */
47extern void fsnotify_clear_marks_by_inode(struct inode *inode);
48/* run the list of all marks associated with vfsmount and flag them to be freed */
49extern void fsnotify_clear_marks_by_mount(struct vfsmount *mnt);
50/*
51 * update the dentry->d_flags of all of inode's children to indicate if inode cares
52 * about events that happen to its children.
53 */
54extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
55
56/* allocate and destroy and event holder to attach events to notification/access queues */
57extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
58extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
59
60#endif	/* __FS_NOTIFY_FSNOTIFY_H_ */
61