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 #include "../mount.h" 10 11 /* destroy all events sitting in this groups notification queue */ 12 extern void fsnotify_flush_notify(struct fsnotify_group *group); 13 14 /* protects reads of inode and vfsmount marks list */ 15 extern struct srcu_struct fsnotify_mark_srcu; 16 17 /* Calculate mask of events for a list of marks */ 18 extern u32 fsnotify_recalc_mask(struct hlist_head *head); 19 20 /* compare two groups for sorting of marks lists */ 21 extern int fsnotify_compare_groups(struct fsnotify_group *a, 22 struct fsnotify_group *b); 23 24 extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark, 25 __u32 mask); 26 /* Add mark to a proper place in mark list */ 27 extern int fsnotify_add_mark_list(struct hlist_head *head, 28 struct fsnotify_mark *mark, 29 int allow_dups); 30 /* add a mark to an inode */ 31 extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark, 32 struct fsnotify_group *group, struct inode *inode, 33 int allow_dups); 34 /* add a mark to a vfsmount */ 35 extern int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark, 36 struct fsnotify_group *group, struct vfsmount *mnt, 37 int allow_dups); 38 39 /* vfsmount specific destruction of a mark */ 40 extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark); 41 /* inode specific destruction of a mark */ 42 extern void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark); 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 /* Destroy all marks in the given list protected by 'lock' */ 47 extern void fsnotify_destroy_marks(struct hlist_head *head, spinlock_t *lock); 48 /* run the list of all marks associated with inode and destroy them */ 49 static inline void fsnotify_clear_marks_by_inode(struct inode *inode) 50 { 51 fsnotify_destroy_marks(&inode->i_fsnotify_marks, &inode->i_lock); 52 } 53 /* run the list of all marks associated with vfsmount and destroy them */ 54 static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) 55 { 56 fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks, 57 &mnt->mnt_root->d_lock); 58 } 59 /* 60 * update the dentry->d_flags of all of inode's children to indicate if inode cares 61 * about events that happen to its children. 62 */ 63 extern void __fsnotify_update_child_dentry_flags(struct inode *inode); 64 65 /* allocate and destroy and event holder to attach events to notification/access queues */ 66 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void); 67 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder); 68 69 #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ 70