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 
20 #define CL_EXPIRE    		0x01
21 #define CL_SLAVE     		0x02
22 #define CL_COPY_ALL 		0x04
23 #define CL_MAKE_SHARED 		0x08
24 #define CL_PRIVATE 		0x10
25 
set_mnt_shared(struct mount * mnt)26 static inline void set_mnt_shared(struct mount *mnt)
27 {
28 	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
29 	mnt->mnt.mnt_flags |= MNT_SHARED;
30 }
31 
32 void change_mnt_propagation(struct mount *, int);
33 int propagate_mnt(struct mount *, struct dentry *, struct mount *,
34 		struct list_head *);
35 int propagate_umount(struct list_head *);
36 int propagate_mount_busy(struct mount *, int);
37 void mnt_release_group_id(struct mount *);
38 int get_dominating_id(struct mount *mnt, const struct path *root);
39 unsigned int mnt_get_count(struct mount *mnt);
40 void mnt_set_mountpoint(struct mount *, struct dentry *,
41 			struct mount *);
42 void release_mounts(struct list_head *);
43 void umount_tree(struct mount *, int, struct list_head *);
44 struct mount *copy_tree(struct mount *, struct dentry *, int);
45 bool is_path_reachable(struct mount *, struct dentry *,
46 			 const struct path *root);
47 #endif /* _LINUX_PNODE_H */
48