1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/fs/pnode.h
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * (C) Copyright IBM Corporation 2005.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #ifndef _LINUX_PNODE_H
8*4882a593Smuzhiyun #define _LINUX_PNODE_H
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/list.h>
11*4882a593Smuzhiyun #include "mount.h"
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
14*4882a593Smuzhiyun #define IS_MNT_SLAVE(m) ((m)->mnt_master)
15*4882a593Smuzhiyun #define IS_MNT_NEW(m) (!(m)->mnt_ns || is_anon_ns((m)->mnt_ns))
16*4882a593Smuzhiyun #define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
17*4882a593Smuzhiyun #define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
18*4882a593Smuzhiyun #define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED)
19*4882a593Smuzhiyun #define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
20*4882a593Smuzhiyun #define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
21*4882a593Smuzhiyun #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #define CL_EXPIRE 0x01
24*4882a593Smuzhiyun #define CL_SLAVE 0x02
25*4882a593Smuzhiyun #define CL_COPY_UNBINDABLE 0x04
26*4882a593Smuzhiyun #define CL_MAKE_SHARED 0x08
27*4882a593Smuzhiyun #define CL_PRIVATE 0x10
28*4882a593Smuzhiyun #define CL_SHARED_TO_SLAVE 0x20
29*4882a593Smuzhiyun #define CL_COPY_MNT_NS_FILE 0x40
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
32*4882a593Smuzhiyun
set_mnt_shared(struct mount * mnt)33*4882a593Smuzhiyun static inline void set_mnt_shared(struct mount *mnt)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
36*4882a593Smuzhiyun mnt->mnt.mnt_flags |= MNT_SHARED;
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun void change_mnt_propagation(struct mount *, int);
40*4882a593Smuzhiyun int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
41*4882a593Smuzhiyun struct hlist_head *);
42*4882a593Smuzhiyun int propagate_umount(struct list_head *);
43*4882a593Smuzhiyun int propagate_mount_busy(struct mount *, int);
44*4882a593Smuzhiyun void propagate_mount_unlock(struct mount *);
45*4882a593Smuzhiyun void mnt_release_group_id(struct mount *);
46*4882a593Smuzhiyun int get_dominating_id(struct mount *mnt, const struct path *root);
47*4882a593Smuzhiyun int mnt_get_count(struct mount *mnt);
48*4882a593Smuzhiyun void mnt_set_mountpoint(struct mount *, struct mountpoint *,
49*4882a593Smuzhiyun struct mount *);
50*4882a593Smuzhiyun void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
51*4882a593Smuzhiyun struct mount *mnt);
52*4882a593Smuzhiyun struct mount *copy_tree(struct mount *, struct dentry *, int);
53*4882a593Smuzhiyun bool is_path_reachable(struct mount *, struct dentry *,
54*4882a593Smuzhiyun const struct path *root);
55*4882a593Smuzhiyun int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
56*4882a593Smuzhiyun #endif /* _LINUX_PNODE_H */
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