| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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_ */ |