1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __FS_NOTIFY_FSNOTIFY_H_
 3#define __FS_NOTIFY_FSNOTIFY_H_
 4
 5#include <linux/list.h>
 6#include <linux/fsnotify.h>
 7#include <linux/srcu.h>
 8#include <linux/types.h>
 9
10#include "../mount.h"
11
12struct fsnotify_iter_info {
13	struct fsnotify_mark *inode_mark;
14	struct fsnotify_mark *vfsmount_mark;
15	int srcu_idx;
16};
17
18/* destroy all events sitting in this groups notification queue */
19extern void fsnotify_flush_notify(struct fsnotify_group *group);
20
21/* protects reads of inode and vfsmount marks list */
22extern struct srcu_struct fsnotify_mark_srcu;
23
24/* compare two groups for sorting of marks lists */
25extern int fsnotify_compare_groups(struct fsnotify_group *a,
26				   struct fsnotify_group *b);
27
28/* Destroy all marks connected via given connector */
29extern void fsnotify_destroy_marks(struct fsnotify_mark_connector __rcu **connp);
30/* run the list of all marks associated with inode and destroy them */
31static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
32{
33	fsnotify_destroy_marks(&inode->i_fsnotify_marks);
34}
35/* run the list of all marks associated with vfsmount and destroy them */
36static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
37{
38	fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks);
39}
40/* Wait until all marks queued for destruction are destroyed */
41extern void fsnotify_wait_marks_destroyed(void);
42
 
 
 
43/*
44 * update the dentry->d_flags of all of inode's children to indicate if inode cares
45 * about events that happen to its children.
46 */
47extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
48
49/* allocate and destroy and event holder to attach events to notification/access queues */
50extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
51extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
52
53#endif	/* __FS_NOTIFY_FSNOTIFY_H_ */

 
 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
15extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
16						__u32 mask);
17/* add a mark to an inode */
18extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
19				   struct fsnotify_group *group, struct inode *inode,
20				   int allow_dups);
21/* add a mark to a vfsmount */
22extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
23				      struct fsnotify_group *group, struct vfsmount *mnt,
24				      int allow_dups);
25
26/* final kfree of a group */
27extern void fsnotify_final_destroy_group(struct fsnotify_group *group);
28
29/* vfsmount specific destruction of a mark */
30extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
31/* inode specific destruction of a mark */
32extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
33/* run the list of all marks associated with inode and flag them to be freed */
34extern void fsnotify_clear_marks_by_inode(struct inode *inode);
35/* run the list of all marks associated with vfsmount and flag them to be freed */
36extern void fsnotify_clear_marks_by_mount(struct vfsmount *mnt);
37/*
38 * update the dentry->d_flags of all of inode's children to indicate if inode cares
39 * about events that happen to its children.
40 */
41extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
42
43/* allocate and destroy and event holder to attach events to notification/access queues */
44extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
45extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
46
47#endif	/* __FS_NOTIFY_FSNOTIFY_H_ */