Line data    Source code

       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         294 : static inline struct inode *fsnotify_conn_inode(
      13             :                                 struct fsnotify_mark_connector *conn)
      14             : {
      15         294 :         return container_of(conn->obj, struct inode, i_fsnotify_marks);
      16             : }
      17             : 
      18           0 : static inline struct mount *fsnotify_conn_mount(
      19             :                                 struct fsnotify_mark_connector *conn)
      20             : {
      21           0 :         return container_of(conn->obj, struct mount, mnt_fsnotify_marks);
      22             : }
      23             : 
      24           0 : static inline struct super_block *fsnotify_conn_sb(
      25             :                                 struct fsnotify_mark_connector *conn)
      26             : {
      27           0 :         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        6618 : static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
      44             : {
      45        6618 :         fsnotify_destroy_marks(&inode->i_fsnotify_marks);
      46             : }
      47             : /* run the list of all marks associated with vfsmount and destroy them */
      48        1069 : static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
      49             : {
      50        1069 :         fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks);
      51             : }
      52             : /* run the list of all marks associated with sb and destroy them */
      53          98 : static inline void fsnotify_clear_marks_by_sb(struct super_block *sb)
      54             : {
      55          98 :         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_ */