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_ALL 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
set_mnt_shared(struct mount * mnt)31 static inline void set_mnt_shared(struct mount *mnt)
32 {
33 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
34 mnt->mnt.mnt_flags |= MNT_SHARED;
35 }
36
37 void change_mnt_propagation(struct mount *, int);
38 int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
39 struct list_head *);
40 int propagate_umount(struct list_head *);
41 int propagate_mount_busy(struct mount *, int);
42 void propagate_remount(struct mount *);
43 void mnt_release_group_id(struct mount *);
44 int get_dominating_id(struct mount *mnt, const struct path *root);
45 unsigned int mnt_get_count(struct mount *mnt);
46 void mnt_set_mountpoint(struct mount *, struct mountpoint *,
47 struct mount *);
48 void umount_tree(struct mount *, int);
49 struct mount *copy_tree(struct mount *, struct dentry *, int);
50 bool is_path_reachable(struct mount *, struct dentry *,
51 const struct path *root);
52 #endif /* _LINUX_PNODE_H */
53