include/linux/dnotify.h

   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
  38 static inline void dnotify_flush(struct file *filp, fl_owner_t id)
  39 {
  40 }
  41
  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 */