/* SPDX-License-Identifier: GPL-2.0 */

  #ifndef __FS_NOTIFY_FSNOTIFY_H_
  #define __FS_NOTIFY_FSNOTIFY_H_
  
  #include <linux/list.h>
  #include <linux/fsnotify.h>
  #include <linux/srcu.h>
  #include <linux/types.h>

  #include "../mount.h"

  static inline struct inode *fsnotify_conn_inode(
  				struct fsnotify_mark_connector *conn)

  {

  	return container_of(conn->obj, struct inode, i_fsnotify_marks);

  }

  static inline struct mount *fsnotify_conn_mount(
  				struct fsnotify_mark_connector *conn)

  {

  	return container_of(conn->obj, struct mount, mnt_fsnotify_marks);

  }

  static inline struct super_block *fsnotify_conn_sb(
  				struct fsnotify_mark_connector *conn)
  {
  	return container_of(conn->obj, struct super_block, s_fsnotify_marks);
  }

  /* destroy all events sitting in this groups notification queue */
  extern void fsnotify_flush_notify(struct fsnotify_group *group);

  /* protects reads of inode and vfsmount marks list */
  extern struct srcu_struct fsnotify_mark_srcu;

  /* compare two groups for sorting of marks lists */
  extern int fsnotify_compare_groups(struct fsnotify_group *a,
  				   struct fsnotify_group *b);

  /* Destroy all marks attached to an object via connector */
  extern void fsnotify_destroy_marks(fsnotify_connp_t *connp);

  /* run the list of all marks associated with inode and destroy them */
  static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
  {

  	fsnotify_destroy_marks(&inode->i_fsnotify_marks);

  }
  /* run the list of all marks associated with vfsmount and destroy them */
  static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
  {

  	fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks);

  }

  /* run the list of all marks associated with sb and destroy them */
  static inline void fsnotify_clear_marks_by_sb(struct super_block *sb)
  {
  	fsnotify_destroy_marks(&sb->s_fsnotify_marks);
  }

  /*
   * update the dentry->d_flags of all of inode's children to indicate if inode cares
   * about events that happen to its children.
   */
  extern void __fsnotify_update_child_dentry_flags(struct inode *inode);

  
  /* allocate and destroy and event holder to attach events to notification/access queues */
  extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
  extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);

  extern struct kmem_cache *fsnotify_mark_connector_cachep;

  #endif	/* __FS_NOTIFY_FSNOTIFY_H_ */