Linux kernel mirror (for testing)
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linux
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#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
23#define IS_MNT_LOCKED_AND_LAZY(m) \
24 (((m)->mnt.mnt_flags & (MNT_LOCKED|MNT_SYNC_UMOUNT)) == MNT_LOCKED)
25
26#define CL_EXPIRE 0x01
27#define CL_SLAVE 0x02
28#define CL_COPY_UNBINDABLE 0x04
29#define CL_MAKE_SHARED 0x08
30#define CL_PRIVATE 0x10
31#define CL_SHARED_TO_SLAVE 0x20
32#define CL_UNPRIVILEGED 0x40
33#define CL_COPY_MNT_NS_FILE 0x80
34
35#define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
36
37static inline void set_mnt_shared(struct mount *mnt)
38{
39 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
40 mnt->mnt.mnt_flags |= MNT_SHARED;
41}
42
43void change_mnt_propagation(struct mount *, int);
44int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
45 struct hlist_head *);
46int propagate_umount(struct list_head *);
47int propagate_mount_busy(struct mount *, int);
48void propagate_mount_unlock(struct mount *);
49void mnt_release_group_id(struct mount *);
50int get_dominating_id(struct mount *mnt, const struct path *root);
51unsigned int mnt_get_count(struct mount *mnt);
52void mnt_set_mountpoint(struct mount *, struct mountpoint *,
53 struct mount *);
54struct mount *copy_tree(struct mount *, struct dentry *, int);
55bool is_path_reachable(struct mount *, struct dentry *,
56 const struct path *root);
57#endif /* _LINUX_PNODE_H */