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59bd9ded 1/* SPDX-License-Identifier: GPL-2.0-only */
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2/*
3 * linux/fs/pnode.h
4 *
5 * (C) Copyright IBM Corporation 2005.
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6 */
7#ifndef _LINUX_PNODE_H
8#define _LINUX_PNODE_H
9
10#include <linux/list.h>
b2dba1af 11#include "mount.h"
03e06e68 12
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13#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
14#define IS_MNT_SLAVE(m) ((m)->mnt_master)
ee2e3f50 15#define IS_MNT_NEW(m) (!(m)->mnt_ns || is_anon_ns((m)->mnt_ns))
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16#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
17#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
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18#define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED)
19#define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
20#define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
0c56fe31 21#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
03e06e68 22
b90fa9ae 23#define CL_EXPIRE 0x01
a58b0eb8 24#define CL_SLAVE 0x02
4ce5d2b1 25#define CL_COPY_UNBINDABLE 0x04
b90fa9ae 26#define CL_MAKE_SHARED 0x08
796a6b52 27#define CL_PRIVATE 0x10
7a472ef4 28#define CL_SHARED_TO_SLAVE 0x20
3bd045cc 29#define CL_COPY_MNT_NS_FILE 0x40
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30
31#define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
b90fa9ae 32
0f0afb1d 33static inline void set_mnt_shared(struct mount *mnt)
b90fa9ae 34{
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35 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
36 mnt->mnt.mnt_flags |= MNT_SHARED;
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37}
38
0f0afb1d 39void change_mnt_propagation(struct mount *, int);
84d17192 40int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
38129a13 41 struct hlist_head *);
c003b26f 42int propagate_umount(struct list_head *);
1ab59738 43int propagate_mount_busy(struct mount *, int);
5d88457e 44void propagate_mount_unlock(struct mount *);
4b8b21f4 45void mnt_release_group_id(struct mount *);
6fc7871f 46int get_dominating_id(struct mount *mnt, const struct path *root);
edf7ddbf 47int mnt_get_count(struct mount *mnt);
84d17192 48void mnt_set_mountpoint(struct mount *, struct mountpoint *,
44d964d6 49 struct mount *);
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50void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
51 struct mount *mnt);
87129cc0 52struct mount *copy_tree(struct mount *, struct dentry *, int);
643822b4 53bool is_path_reachable(struct mount *, struct dentry *,
afac7cba 54 const struct path *root);
d2921684 55int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
07b20889 56#endif /* _LINUX_PNODE_H */