fs/notify/fsnotify.h

   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 /* Calculate mask of events for a list of marks */
  16 extern u32 fsnotify_recalc_mask(struct hlist_head *head);
  17
  18 /* compare two groups for sorting of marks lists */
  19 extern int fsnotify_compare_groups(struct fsnotify_group *a,
  20                                    struct fsnotify_group *b);
  21
  22 extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark,
  23                                                 __u32 mask);
  24 /* Add mark to a proper place in mark list */
  25 extern int fsnotify_add_mark_list(struct hlist_head *head,
  26                                   struct fsnotify_mark *mark,
  27                                   int allow_dups);
  28 /* add a mark to an inode */
  29 extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
  30                                    struct fsnotify_group *group, struct inode *inode,
  31                                    int allow_dups);
  32 /* add a mark to a vfsmount */
  33 extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
  34                                       struct fsnotify_group *group, struct vfsmount *mnt,
  35                                       int allow_dups);
  36
  37 /* vfsmount specific destruction of a mark */
  38 extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
  39 /* inode specific destruction of a mark */
  40 extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
  41 /* Destroy all marks in the given list */
  42 extern void fsnotify_destroy_marks(struct list_head *to_free);
  43 /* Find mark belonging to given group in the list of marks */
  44 extern struct fsnotify_mark *fsnotify_find_mark(struct hlist_head *head,
  45                                                 struct fsnotify_group *group);
  46 /* run the list of all marks associated with inode and flag them to be freed */
  47 extern void fsnotify_clear_marks_by_inode(struct inode *inode);
  48 /* run the list of all marks associated with vfsmount and flag them to be freed */
  49 extern void fsnotify_clear_marks_by_mount(struct vfsmount *mnt);
  50 /*
  51  * update the dentry->d_flags of all of inode's children to indicate if inode cares
  52  * about events that happen to its children.
  53  */
  54 extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
  55
  56 /* allocate and destroy and event holder to attach events to notification/access queues */
  57 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
  58 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
  59
  60 #endif  /* __FS_NOTIFY_FSNOTIFY_H_ */