1*b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 290586523SEric Paris #ifndef __FS_NOTIFY_FSNOTIFY_H_ 390586523SEric Paris #define __FS_NOTIFY_FSNOTIFY_H_ 490586523SEric Paris 590586523SEric Paris #include <linux/list.h> 690586523SEric Paris #include <linux/fsnotify.h> 790586523SEric Paris #include <linux/srcu.h> 890586523SEric Paris #include <linux/types.h> 990586523SEric Paris 10925d1132SJan Kara #include "../mount.h" 11925d1132SJan Kara 12abc77577SJan Kara struct fsnotify_iter_info { 13abc77577SJan Kara struct fsnotify_mark *inode_mark; 14abc77577SJan Kara struct fsnotify_mark *vfsmount_mark; 15abc77577SJan Kara int srcu_idx; 16abc77577SJan Kara }; 17abc77577SJan Kara 18a2d8bc6cSEric Paris /* destroy all events sitting in this groups notification queue */ 19a2d8bc6cSEric Paris extern void fsnotify_flush_notify(struct fsnotify_group *group); 20a2d8bc6cSEric Paris 2175c1be48SEric Paris /* protects reads of inode and vfsmount marks list */ 2275c1be48SEric Paris extern struct srcu_struct fsnotify_mark_srcu; 2375c1be48SEric Paris 248edc6e16SJan Kara /* compare two groups for sorting of marks lists */ 258edc6e16SJan Kara extern int fsnotify_compare_groups(struct fsnotify_group *a, 268edc6e16SJan Kara struct fsnotify_group *b); 278edc6e16SJan Kara 28a03e2e4fSJan Kara /* Destroy all marks connected via given connector */ 2908991e83SJan Kara extern void fsnotify_destroy_marks(struct fsnotify_mark_connector __rcu **connp); 30925d1132SJan Kara /* run the list of all marks associated with inode and destroy them */ 31925d1132SJan Kara static inline void fsnotify_clear_marks_by_inode(struct inode *inode) 32925d1132SJan Kara { 3308991e83SJan Kara fsnotify_destroy_marks(&inode->i_fsnotify_marks); 34925d1132SJan Kara } 35925d1132SJan Kara /* run the list of all marks associated with vfsmount and destroy them */ 36925d1132SJan Kara static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) 37925d1132SJan Kara { 3808991e83SJan Kara fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks); 39925d1132SJan Kara } 40f09b04a0SJan Kara /* Wait until all marks queued for destruction are destroyed */ 41f09b04a0SJan Kara extern void fsnotify_wait_marks_destroyed(void); 4235e48176SJan Kara 43c28f7e56SEric Paris /* 44c28f7e56SEric Paris * update the dentry->d_flags of all of inode's children to indicate if inode cares 45c28f7e56SEric Paris * about events that happen to its children. 46c28f7e56SEric Paris */ 47c28f7e56SEric Paris extern void __fsnotify_update_child_dentry_flags(struct inode *inode); 48a2d8bc6cSEric Paris 49a2d8bc6cSEric Paris /* allocate and destroy and event holder to attach events to notification/access queues */ 50a2d8bc6cSEric Paris extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void); 51a2d8bc6cSEric Paris extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder); 52a2d8bc6cSEric Paris 5390586523SEric Paris #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ 54