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 struct fsnotify_iter_info { 13 struct fsnotify_mark *inode_mark; 14 struct fsnotify_mark *vfsmount_mark; 15 int srcu_idx; 16 }; 17 18 /* destroy all events sitting in this groups notification queue */ 19 extern void fsnotify_flush_notify(struct fsnotify_group *group); 20 21 /* protects reads of inode and vfsmount marks list */ 22 extern struct srcu_struct fsnotify_mark_srcu; 23 24 /* compare two groups for sorting of marks lists */ 25 extern int fsnotify_compare_groups(struct fsnotify_group *a, 26 struct fsnotify_group *b); 27 28 /* Destroy all marks connected via given connector */ 29 extern void fsnotify_destroy_marks(struct fsnotify_mark_connector __rcu **connp); 30 /* run the list of all marks associated with inode and destroy them */ 31 static inline void fsnotify_clear_marks_by_inode(struct inode *inode) 32 { 33 fsnotify_destroy_marks(&inode->i_fsnotify_marks); 34 } 35 /* run the list of all marks associated with vfsmount and destroy them */ 36 static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) 37 { 38 fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks); 39 } 40 /* Wait until all marks queued for destruction are destroyed */ 41 extern void fsnotify_wait_marks_destroyed(void); 42 43 /* 44 * update the dentry->d_flags of all of inode's children to indicate if inode cares 45 * about events that happen to its children. 46 */ 47 extern void __fsnotify_update_child_dentry_flags(struct inode *inode); 48 49 /* allocate and destroy and event holder to attach events to notification/access queues */ 50 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void); 51 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder); 52 53 #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ 54