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/* 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
12static inline struct inode *fsnotify_conn_inode(
13				struct fsnotify_mark_connector *conn)
14{
15	return container_of(conn->obj, struct inode, i_fsnotify_marks);
16}
17
18static inline struct mount *fsnotify_conn_mount(
19				struct fsnotify_mark_connector *conn)
20{
21	return container_of(conn->obj, struct mount, mnt_fsnotify_marks);
22}
23
24static inline struct super_block *fsnotify_conn_sb(
25				struct fsnotify_mark_connector *conn)
26{
27	return container_of(conn->obj, struct super_block, s_fsnotify_marks);
28}
29
30/* destroy all events sitting in this groups notification queue */
31extern void fsnotify_flush_notify(struct fsnotify_group *group);
32
33/* protects reads of inode and vfsmount marks list */
34extern struct srcu_struct fsnotify_mark_srcu;
35
36/* compare two groups for sorting of marks lists */
37extern int fsnotify_compare_groups(struct fsnotify_group *a,
38				   struct fsnotify_group *b);
39
40/* Destroy all marks attached to an object via connector */
41extern void fsnotify_destroy_marks(fsnotify_connp_t *connp);
42/* run the list of all marks associated with inode and destroy them */
43static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
44{
45	fsnotify_destroy_marks(&inode->i_fsnotify_marks);
46}
47/* run the list of all marks associated with vfsmount and destroy them */
48static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
49{
50	fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks);
51}
52/* run the list of all marks associated with sb and destroy them */
53static inline void fsnotify_clear_marks_by_sb(struct super_block *sb)
54{
55	fsnotify_destroy_marks(&sb->s_fsnotify_marks);
56}
57
58/*
59 * update the dentry->d_flags of all of inode's children to indicate if inode cares
60 * about events that happen to its children.
61 */
62extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
63
64/* allocate and destroy and event holder to attach events to notification/access queues */
65extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
66extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
67
68extern struct kmem_cache *fsnotify_mark_connector_cachep;
69
70#endif	/* __FS_NOTIFY_FSNOTIFY_H_ */