1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_DNOTIFY_H
3 #define _LINUX_DNOTIFY_H
4 /*
5 * Directory notification for Linux
6 *
7 * Copyright (C) 2000,2002 Stephen Rothwell
8 */
9
10 #include <linux/fs.h>
11
12 struct dnotify_struct {
13 struct dnotify_struct * dn_next;
14 __u32 dn_mask;
15 int dn_fd;
16 struct file * dn_filp;
17 fl_owner_t dn_owner;
18 };
19
20 #ifdef __KERNEL__
21
22
23 #ifdef CONFIG_DNOTIFY
24
25 #define DNOTIFY_ALL_EVENTS (FS_DELETE | FS_DELETE_CHILD |\
26 FS_MODIFY | FS_MODIFY_CHILD |\
27 FS_ACCESS | FS_ACCESS_CHILD |\
28 FS_ATTRIB | FS_ATTRIB_CHILD |\
29 FS_CREATE | FS_DN_RENAME |\
30 FS_MOVED_FROM | FS_MOVED_TO)
31
32 extern int dir_notify_enable;
33 extern void dnotify_flush(struct file *, fl_owner_t);
34 extern int fcntl_dirnotify(int, struct file *, unsigned long);
35
36 #else
37
dnotify_flush(struct file * filp,fl_owner_t id)38 static inline void dnotify_flush(struct file *filp, fl_owner_t id)
39 {
40 }
41
fcntl_dirnotify(int fd,struct file * filp,unsigned long arg)42 static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
43 {
44 return -EINVAL;
45 }
46
47 #endif /* CONFIG_DNOTIFY */
48
49 #endif /* __KERNEL __ */
50
51 #endif /* _LINUX_DNOTIFY_H */
52