source: src/linux/universal/linux-4.4/fs/pnode.h @ 31662

Last change on this file since 31662 was 31662, checked in by brainslayer, 8 days ago

use new squashfs in all kernels

File size: 1.9 KB
Line 
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
24#define CL_EXPIRE               0x01
25#define CL_SLAVE                0x02
26#define CL_COPY_UNBINDABLE      0x04
27#define CL_MAKE_SHARED          0x08
28#define CL_PRIVATE              0x10
29#define CL_SHARED_TO_SLAVE      0x20
30#define CL_UNPRIVILEGED         0x40
31#define CL_COPY_MNT_NS_FILE     0x80
32
33#define CL_COPY_ALL             (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
34
35static inline void set_mnt_shared(struct mount *mnt)
36{
37        mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
38        mnt->mnt.mnt_flags |= MNT_SHARED;
39}
40
41void change_mnt_propagation(struct mount *, int);
42int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
43                struct hlist_head *);
44int propagate_umount(struct list_head *);
45int propagate_mount_busy(struct mount *, int);
46void propagate_mount_unlock(struct mount *);
47void mnt_release_group_id(struct mount *);
48int get_dominating_id(struct mount *mnt, const struct path *root);
49unsigned int mnt_get_count(struct mount *mnt);
50void mnt_set_mountpoint(struct mount *, struct mountpoint *,
51                        struct mount *);
52void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
53                           struct mount *mnt);
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 */
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