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

  /*
   *  linux/fs/pnode.h
   *
   * (C) Copyright IBM Corporation 2005.

   */
  #ifndef _LINUX_PNODE_H
  #define _LINUX_PNODE_H
  
  #include <linux/list.h>

  #include "mount.h"

  #define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
  #define IS_MNT_SLAVE(m) ((m)->mnt_master)
  #define IS_MNT_NEW(m)  (!(m)->mnt_ns)
  #define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
  #define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)

  #define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED)
  #define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
  #define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)

  #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)

  #define CL_EXPIRE    		0x01

  #define CL_SLAVE     		0x02

  #define CL_COPY_UNBINDABLE	0x04

  #define CL_MAKE_SHARED 		0x08

  #define CL_PRIVATE 		0x10

  #define CL_SHARED_TO_SLAVE	0x20

  #define CL_COPY_MNT_NS_FILE	0x40

  
  #define CL_COPY_ALL		(CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)

  static inline void set_mnt_shared(struct mount *mnt)

  {

  	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
  	mnt->mnt.mnt_flags |= MNT_SHARED;

  }

  void change_mnt_propagation(struct mount *, int);

  int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,

  		struct hlist_head *);

  int propagate_umount(struct list_head *);

  int propagate_mount_busy(struct mount *, int);

  void propagate_mount_unlock(struct mount *);

  void mnt_release_group_id(struct mount *);

  int get_dominating_id(struct mount *mnt, const struct path *root);

  int mnt_get_count(struct mount *mnt);

  void mnt_set_mountpoint(struct mount *, struct mountpoint *,

  			struct mount *);

  void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
  			   struct mount *mnt);

  struct mount *copy_tree(struct mount *, struct dentry *, int);

  bool is_path_reachable(struct mount *, struct dentry *,

  			 const struct path *root);

  int count_mounts(struct mnt_namespace *ns, struct mount *mnt);

  #endif /* _LINUX_PNODE_H */