1/*
 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>
12#include "mount.h"
13
14#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)
19#define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED)
20#define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
21#define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
22
23#define CL_EXPIRE    		0x01
24#define CL_SLAVE     		0x02
25#define CL_COPY_UNBINDABLE	0x04
26#define CL_MAKE_SHARED 		0x08
27#define CL_PRIVATE 		0x10
28#define CL_SHARED_TO_SLAVE	0x20
29#define CL_UNPRIVILEGED		0x40
30#define CL_COPY_MNT_NS_FILE	0x80
31
32#define CL_COPY_ALL		(CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
33
34static inline void set_mnt_shared(struct mount *mnt)
35{
36	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
37	mnt->mnt.mnt_flags |= MNT_SHARED;
38}
39
40void change_mnt_propagation(struct mount *, int);
41int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
42		struct hlist_head *);
43int propagate_umount(struct hlist_head *);
44int propagate_mount_busy(struct mount *, int);
45void mnt_release_group_id(struct mount *);
46int get_dominating_id(struct mount *mnt, const struct path *root);
47unsigned int mnt_get_count(struct mount *mnt);
48void mnt_set_mountpoint(struct mount *, struct mountpoint *,
49			struct mount *);
50void umount_tree(struct mount *, int);
51struct mount *copy_tree(struct mount *, struct dentry *, int);
52bool is_path_reachable(struct mount *, struct dentry *,
53			 const struct path *root);
54#endif /* _LINUX_PNODE_H */