xref: /openbmc/linux/fs/notify/fsnotify.h (revision 4800cd83)
1 #ifndef __FS_NOTIFY_FSNOTIFY_H_
2 #define __FS_NOTIFY_FSNOTIFY_H_
3 
4 #include <linux/list.h>
5 #include <linux/fsnotify.h>
6 #include <linux/srcu.h>
7 #include <linux/types.h>
8 
9 /* destroy all events sitting in this groups notification queue */
10 extern void fsnotify_flush_notify(struct fsnotify_group *group);
11 
12 /* protects reads of inode and vfsmount marks list */
13 extern struct srcu_struct fsnotify_mark_srcu;
14 
15 extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
16 						__u32 mask);
17 /* add a mark to an inode */
18 extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
19 				   struct fsnotify_group *group, struct inode *inode,
20 				   int allow_dups);
21 /* add a mark to a vfsmount */
22 extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
23 				      struct fsnotify_group *group, struct vfsmount *mnt,
24 				      int allow_dups);
25 
26 /* final kfree of a group */
27 extern void fsnotify_final_destroy_group(struct fsnotify_group *group);
28 
29 /* vfsmount specific destruction of a mark */
30 extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
31 /* inode specific destruction of a mark */
32 extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
33 /* run the list of all marks associated with inode and flag them to be freed */
34 extern void fsnotify_clear_marks_by_inode(struct inode *inode);
35 /* run the list of all marks associated with vfsmount and flag them to be freed */
36 extern void fsnotify_clear_marks_by_mount(struct vfsmount *mnt);
37 /*
38  * update the dentry->d_flags of all of inode's children to indicate if inode cares
39  * about events that happen to its children.
40  */
41 extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
42 
43 /* allocate and destroy and event holder to attach events to notification/access queues */
44 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
45 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
46 
47 #endif	/* __FS_NOTIFY_FSNOTIFY_H_ */
48