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Eric Paris90586522009-05-21 17:01:20 -04001#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
Jan Kara925d1132015-09-04 15:43:09 -07009#include "../mount.h"
10
Eric Parisa2d8bc62009-05-21 17:01:37 -040011/* destroy all events sitting in this groups notification queue */
12extern void fsnotify_flush_notify(struct fsnotify_group *group);
13
Eric Paris75c1be42010-07-28 10:18:38 -040014/* protects reads of inode and vfsmount marks list */
15extern struct srcu_struct fsnotify_mark_srcu;
16
Jan Kara0809ab62014-12-12 16:58:36 -080017/* Calculate mask of events for a list of marks */
18extern u32 fsnotify_recalc_mask(struct hlist_head *head);
19
Jan Kara8edc6e12014-11-13 15:19:33 -080020/* compare two groups for sorting of marks lists */
21extern int fsnotify_compare_groups(struct fsnotify_group *a,
22 struct fsnotify_group *b);
23
Eric Paris90b1e7a2009-12-17 21:24:33 -050024extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
25 __u32 mask);
Jan Kara0809ab62014-12-12 16:58:36 -080026/* Add mark to a proper place in mark list */
27extern int fsnotify_add_mark_list(struct hlist_head *head,
28 struct fsnotify_mark *mark,
29 int allow_dups);
Eric Paris5444e292009-12-17 21:24:27 -050030/* add a mark to an inode */
31extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
32 struct fsnotify_group *group, struct inode *inode,
33 int allow_dups);
Eric Paris0d48b7f2009-12-17 21:24:27 -050034/* add a mark to a vfsmount */
35extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
36 struct fsnotify_group *group, struct vfsmount *mnt,
37 int allow_dups);
Eric Paris5444e292009-12-17 21:24:27 -050038
Eric Paris0d48b7f2009-12-17 21:24:27 -050039/* vfsmount specific destruction of a mark */
40extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
Eric Paris5444e292009-12-17 21:24:27 -050041/* inode specific destruction of a mark */
42extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
Jan Kara0809ab62014-12-12 16:58:36 -080043/* 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);
Jan Kara925d1132015-09-04 15:43:09 -070046/* Destroy all marks in the given list protected by 'lock' */
47extern void fsnotify_destroy_marks(struct hlist_head *head, spinlock_t *lock);
48/* run the list of all marks associated with inode and destroy them */
49static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
50{
51 fsnotify_destroy_marks(&inode->i_fsnotify_marks, &inode->i_lock);
52}
53/* run the list of all marks associated with vfsmount and destroy them */
54static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
55{
56 fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks,
57 &mnt->mnt_root->d_lock);
58}
Eric Parisc28f7e52009-05-21 17:01:29 -040059/*
60 * update the dentry->d_flags of all of inode's children to indicate if inode cares
61 * about events that happen to its children.
62 */
63extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
Eric Parisa2d8bc62009-05-21 17:01:37 -040064
65/* allocate and destroy and event holder to attach events to notification/access queues */
66extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
67extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
68
Eric Paris90586522009-05-21 17:01:20 -040069#endif /* __FS_NOTIFY_FSNOTIFY_H_ */