| xj | b04a402 | 2021-11-25 15:01:52 +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 | 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 | /* destroy all events sitting in this groups notification queue */ |
| 25 | extern void fsnotify_flush_notify(struct fsnotify_group *group); |
| 26 | |
| 27 | /* protects reads of inode and vfsmount marks list */ |
| 28 | extern struct srcu_struct fsnotify_mark_srcu; |
| 29 | |
| 30 | /* compare two groups for sorting of marks lists */ |
| 31 | extern int fsnotify_compare_groups(struct fsnotify_group *a, |
| 32 | struct fsnotify_group *b); |
| 33 | |
| 34 | /* Destroy all marks attached to an object via connector */ |
| 35 | extern void fsnotify_destroy_marks(fsnotify_connp_t *connp); |
| 36 | /* run the list of all marks associated with inode and destroy them */ |
| 37 | static inline void fsnotify_clear_marks_by_inode(struct inode *inode) |
| 38 | { |
| 39 | fsnotify_destroy_marks(&inode->i_fsnotify_marks); |
| 40 | } |
| 41 | /* run the list of all marks associated with vfsmount and destroy them */ |
| 42 | static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) |
| 43 | { |
| 44 | fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks); |
| 45 | } |
| 46 | /* Wait until all marks queued for destruction are destroyed */ |
| 47 | extern void fsnotify_wait_marks_destroyed(void); |
| 48 | |
| 49 | /* |
| 50 | * update the dentry->d_flags of all of inode's children to indicate if inode cares |
| 51 | * about events that happen to its children. |
| 52 | */ |
| 53 | extern void __fsnotify_update_child_dentry_flags(struct inode *inode); |
| 54 | |
| 55 | /* allocate and destroy and event holder to attach events to notification/access queues */ |
| 56 | extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void); |
| 57 | extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder); |
| 58 | |
| 59 | #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ |