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Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-eoan-kernel.git] / fs / pnode.h
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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>
b2dba1af 12#include "mount.h"
03e06e68 13
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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)
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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)
0c56fe31 22#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
03e06e68 23
b90fa9ae 24#define CL_EXPIRE 0x01
a58b0eb8 25#define CL_SLAVE 0x02
4ce5d2b1 26#define CL_COPY_UNBINDABLE 0x04
b90fa9ae 27#define CL_MAKE_SHARED 0x08
796a6b52 28#define CL_PRIVATE 0x10
7a472ef4 29#define CL_SHARED_TO_SLAVE 0x20
132c94e3 30#define CL_UNPRIVILEGED 0x40
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31#define CL_COPY_MNT_NS_FILE 0x80
32
33#define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
b90fa9ae 34
0f0afb1d 35static inline void set_mnt_shared(struct mount *mnt)
b90fa9ae 36{
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37 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
38 mnt->mnt.mnt_flags |= MNT_SHARED;
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39}
40
0f0afb1d 41void change_mnt_propagation(struct mount *, int);
84d17192 42int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
38129a13 43 struct hlist_head *);
c003b26f 44int propagate_umount(struct list_head *);
1ab59738 45int propagate_mount_busy(struct mount *, int);
5d88457e 46void propagate_mount_unlock(struct mount *);
4b8b21f4 47void mnt_release_group_id(struct mount *);
6fc7871f 48int get_dominating_id(struct mount *mnt, const struct path *root);
83adc753 49unsigned int mnt_get_count(struct mount *mnt);
84d17192 50void mnt_set_mountpoint(struct mount *, struct mountpoint *,
44d964d6 51 struct mount *);
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52void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
53 struct mount *mnt);
87129cc0 54struct mount *copy_tree(struct mount *, struct dentry *, int);
643822b4 55bool is_path_reachable(struct mount *, struct dentry *,
afac7cba 56 const struct path *root);
d2921684 57int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
07b20889 58#endif /* _LINUX_PNODE_H */