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 static inline struct super_block *fsnotify_conn_sb( 25 struct fsnotify_mark_connector *conn) 26 { 27 return container_of(conn->obj, struct super_block, s_fsnotify_marks); 28 } 29 30 /* destroy all events sitting in this groups notification queue */ 31 extern void fsnotify_flush_notify(struct fsnotify_group *group); 32 33 /* protects reads of inode and vfsmount marks list */ 34 extern struct srcu_struct fsnotify_mark_srcu; 35 36 /* compare two groups for sorting of marks lists */ 37 extern int fsnotify_compare_groups(struct fsnotify_group *a, 38 struct fsnotify_group *b); 39 40 /* Destroy all marks attached to an object via connector */ 41 extern void fsnotify_destroy_marks(fsnotify_connp_t *connp); 42 /* run the list of all marks associated with inode and destroy them */ 43 static inline void fsnotify_clear_marks_by_inode(struct inode *inode) 44 { 45 fsnotify_destroy_marks(&inode->i_fsnotify_marks); 46 } 47 /* run the list of all marks associated with vfsmount and destroy them */ 48 static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) 49 { 50 fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks); 51 } 52 /* run the list of all marks associated with sb and destroy them */ 53 static inline void fsnotify_clear_marks_by_sb(struct super_block *sb) 54 { 55 fsnotify_destroy_marks(&sb->s_fsnotify_marks); 56 } 57 58 /* 59 * update the dentry->d_flags of all of inode's children to indicate if inode cares 60 * about events that happen to its children. 61 */ 62 extern void __fsnotify_update_child_dentry_flags(struct inode *inode); 63 64 /* allocate and destroy and event holder to attach events to notification/access queues */ 65 extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void); 66 extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder); 67 68 extern struct kmem_cache *fsnotify_mark_connector_cachep; 69 70 #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ 71