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
  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 /* destroy all events sitting in this groups notification queue */
  25 extern void fsnotify_flush_notify(struct fsnotify_group *group);
  26
  27 /* protects reads of inode and vfsmount marks list */
  28 extern struct srcu_struct fsnotify_mark_srcu;
  29
  30 /* compare two groups for sorting of marks lists */
  31 extern int fsnotify_compare_groups(struct fsnotify_group *a,
  32                                    struct fsnotify_group *b);
  33
  34 /* Destroy all marks attached to an object via connector */
  35 extern void fsnotify_destroy_marks(fsnotify_connp_t *connp);
  36 /* run the list of all marks associated with inode and destroy them */
  37 static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
  38 {
  39         fsnotify_destroy_marks(&inode->i_fsnotify_marks);
  40 }
  41 /* run the list of all marks associated with vfsmount and destroy them */
  42 static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
  43 {
  44         fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks);
  45 }
  46 /* Wait until all marks queued for destruction are destroyed */
  47 extern void fsnotify_wait_marks_destroyed(void);
  48
  49 /*
  50  * update the dentry->d_flags of all of inode's children to indicate if inode cares
  51  * about events that happen to its children.
  52  */
  53 extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
  54
  55 /* allocate and destroy and event holder to attach events to notification/access queues */
  56 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
  57 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
  58
  59 #endif  /* __FS_NOTIFY_FSNOTIFY_H_ */