aboutsummaryrefslogtreecommitdiffstats
path: root/fs/notify/fsnotify.h
blob: 7c7a904b802d69a8904f9f9f9283d768e49596af (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
#ifndef __FS_NOTIFY_FSNOTIFY_H_
#define __FS_NOTIFY_FSNOTIFY_H_

#include <linux/list.h>
#include <linux/fsnotify.h>
#include <linux/srcu.h>
#include <linux/types.h>

/* protects reads of fsnotify_groups */
extern struct srcu_struct fsnotify_grp_srcu;
/* all groups which receive inode fsnotify events */
extern struct list_head fsnotify_inode_groups;
/* all groups which receive vfsmount fsnotify events */
extern struct list_head fsnotify_vfsmount_groups;
/* all bitwise OR of all event types (FS_*) for all fsnotify_inode_groups */
extern __u32 fsnotify_inode_mask;
/* all bitwise OR of all event types (FS_*) for all fsnotify_vfsmount_groups */
extern __u32 fsnotify_vfsmount_mask;

/* destroy all events sitting in this groups notification queue */
extern void fsnotify_flush_notify(struct fsnotify_group *group);

/* add a mark to an inode */
extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
				   struct fsnotify_group *group, struct inode *inode,
				   int allow_dups);

/* add a group to the inode group list */
extern void fsnotify_add_inode_group(struct fsnotify_group *group);
/* add a group to the vfsmount group list */
extern void fsnotify_add_vfsmount_group(struct fsnotify_group *group);
/* final kfree of a group */
extern void fsnotify_final_destroy_group(struct fsnotify_group *group);

/* inode specific destruction of a mark */
extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
/* run the list of all marks associated with inode and flag them to be freed */
extern void fsnotify_clear_marks_by_inode(struct inode *inode);
/*
 * update the dentry->d_flags of all of inode's children to indicate if inode cares
 * about events that happen to its children.
 */
extern void __fsnotify_update_child_dentry_flags(struct inode *inode);

/* allocate and destroy and event holder to attach events to notification/access queues */
extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);

#endif	/* __FS_NOTIFY_FSNOTIFY_H_ */