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Ram Pai07b20882005-11-07 17:19:07 -05001/*
2 * linux/fs/pnode.h
3 *
4 * (C) Copyright IBM Corporation 2005.
5 * Released under GPL v2.
6 *
7 */
8#ifndef _LINUX_PNODE_H
9#define _LINUX_PNODE_H
10
11#include <linux/list.h>
Al Virob2dba1a2011-11-23 19:26:23 -050012#include "mount.h"
Ram Pai03e06e62005-11-07 17:19:33 -050013
Al Virofc7be132011-11-25 01:05:37 -050014#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
15#define IS_MNT_SLAVE(m) ((m)->mnt_master)
16#define IS_MNT_NEW(m) (!(m)->mnt_ns)
17#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
18#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
Ram Pai03e06e62005-11-07 17:19:33 -050019
Ram Paib90fa9a2005-11-07 17:19:50 -050020#define CL_EXPIRE 0x01
Ram Paia58b0eb2005-11-07 17:20:48 -050021#define CL_SLAVE 0x02
Ram Paib90fa9a2005-11-07 17:19:50 -050022#define CL_COPY_ALL 0x04
23#define CL_MAKE_SHARED 0x08
Al Viro796a6b52010-01-16 13:28:47 -050024#define CL_PRIVATE 0x10
Eric W. Biederman7a472ef2012-07-31 13:13:04 -070025#define CL_SHARED_TO_SLAVE 0x20
Ram Paib90fa9a2005-11-07 17:19:50 -050026
Al Viro0f0afb12011-11-24 20:43:10 -050027static inline void set_mnt_shared(struct mount *mnt)
Ram Paib90fa9a2005-11-07 17:19:50 -050028{
Al Viro0f0afb12011-11-24 20:43:10 -050029 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
30 mnt->mnt.mnt_flags |= MNT_SHARED;
Ram Paib90fa9a2005-11-07 17:19:50 -050031}
32
Al Viro0f0afb12011-11-24 20:43:10 -050033void change_mnt_propagation(struct mount *, int);
Al Viroa8d56d82011-11-24 23:59:29 -050034int propagate_mnt(struct mount *, struct dentry *, struct mount *,
Ram Paib90fa9a2005-11-07 17:19:50 -050035 struct list_head *);
Ram Paia05964f2005-11-07 17:20:17 -050036int propagate_umount(struct list_head *);
Al Viro1ab59732011-11-24 21:35:16 -050037int propagate_mount_busy(struct mount *, int);
Al Viro4b8b21f2011-11-24 19:54:23 -050038void mnt_release_group_id(struct mount *);
Al Viro6fc78712011-11-24 23:35:54 -050039int get_dominating_id(struct mount *mnt, const struct path *root);
Al Viro83adc752011-11-24 22:37:54 -050040unsigned int mnt_get_count(struct mount *mnt);
Al Viro14cf1fa2011-11-25 00:01:17 -050041void mnt_set_mountpoint(struct mount *, struct dentry *,
Al Viro44d964d62011-11-24 21:28:22 -050042 struct mount *);
Al Virof47ec3f2011-11-21 21:15:42 -050043void release_mounts(struct list_head *);
Al Viro761d5c32011-11-24 21:07:43 -050044void umount_tree(struct mount *, int, struct list_head *);
Al Viro87129cc2011-11-24 21:24:27 -050045struct mount *copy_tree(struct mount *, struct dentry *, int);
Al Viro643822b2011-11-24 22:00:28 -050046bool is_path_reachable(struct mount *, struct dentry *,
Al Viroafac7cb2011-11-23 19:34:49 -050047 const struct path *root);
Ram Pai07b20882005-11-07 17:19:07 -050048#endif /* _LINUX_PNODE_H */