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 | |
12 | static 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 | |
18 | static 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 | |
24 | static 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 | static inline struct super_block *fsnotify_connector_sb( |
31 | struct fsnotify_mark_connector *conn) |
32 | { |
33 | switch (conn->type) { |
34 | case FSNOTIFY_OBJ_TYPE_INODE: |
35 | return fsnotify_conn_inode(conn)->i_sb; |
36 | case FSNOTIFY_OBJ_TYPE_VFSMOUNT: |
37 | return fsnotify_conn_mount(conn)->mnt.mnt_sb; |
38 | case FSNOTIFY_OBJ_TYPE_SB: |
39 | return fsnotify_conn_sb(conn); |
40 | default: |
41 | return NULL; |
42 | } |
43 | } |
44 | |
45 | /* destroy all events sitting in this groups notification queue */ |
46 | extern void fsnotify_flush_notify(struct fsnotify_group *group); |
47 | |
48 | /* protects reads of inode and vfsmount marks list */ |
49 | extern struct srcu_struct fsnotify_mark_srcu; |
50 | |
51 | /* compare two groups for sorting of marks lists */ |
52 | extern int fsnotify_compare_groups(struct fsnotify_group *a, |
53 | struct fsnotify_group *b); |
54 | |
55 | /* Destroy all marks attached to an object via connector */ |
56 | extern void fsnotify_destroy_marks(fsnotify_connp_t *connp); |
57 | /* run the list of all marks associated with inode and destroy them */ |
58 | static inline void fsnotify_clear_marks_by_inode(struct inode *inode) |
59 | { |
60 | fsnotify_destroy_marks(connp: &inode->i_fsnotify_marks); |
61 | } |
62 | /* run the list of all marks associated with vfsmount and destroy them */ |
63 | static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) |
64 | { |
65 | fsnotify_destroy_marks(connp: &real_mount(mnt)->mnt_fsnotify_marks); |
66 | } |
67 | /* run the list of all marks associated with sb and destroy them */ |
68 | static inline void fsnotify_clear_marks_by_sb(struct super_block *sb) |
69 | { |
70 | fsnotify_destroy_marks(connp: &sb->s_fsnotify_marks); |
71 | } |
72 | |
73 | /* |
74 | * update the dentry->d_flags of all of inode's children to indicate if inode cares |
75 | * about events that happen to its children. |
76 | */ |
77 | extern void __fsnotify_update_child_dentry_flags(struct inode *inode); |
78 | |
79 | extern struct kmem_cache *fsnotify_mark_connector_cachep; |
80 | |
81 | #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ |
82 |