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Ram Pai07b20882005-11-07 17:19:07 -05001/*
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>
Al Virob2dba1a2011-11-23 19:26:23 -050012#include "mount.h"
Ram Pai03e06e62005-11-07 17:19:33 -050013
Al Virofc7be132011-11-25 01:05:37 -050014#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)
Al Virof2ebb3a2014-02-27 09:35:45 -050019#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)
Eric W. Biederman0c56fe32015-01-05 13:38:04 -060022#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
Ram Pai03e06e62005-11-07 17:19:33 -050023
Ram Paib90fa9a2005-11-07 17:19:50 -050024#define CL_EXPIRE 0x01
Ram Paia58b0eb2005-11-07 17:20:48 -050025#define CL_SLAVE 0x02
Eric W. Biederman4ce5d2b2013-03-30 01:35:18 -070026#define CL_COPY_UNBINDABLE 0x04
Ram Paib90fa9a2005-11-07 17:19:50 -050027#define CL_MAKE_SHARED 0x08
Al Viro796a6b52010-01-16 13:28:47 -050028#define CL_PRIVATE 0x10
Eric W. Biederman7a472ef2012-07-31 13:13:04 -070029#define CL_SHARED_TO_SLAVE 0x20
Eric W. Biederman132c94e2013-03-22 04:08:05 -070030#define CL_UNPRIVILEGED 0x40
Eric W. Biederman4ce5d2b2013-03-30 01:35:18 -070031#define CL_COPY_MNT_NS_FILE 0x80
32
33#define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
Ram Paib90fa9a2005-11-07 17:19:50 -050034
Al Viro0f0afb12011-11-24 20:43:10 -050035static inline void set_mnt_shared(struct mount *mnt)
Ram Paib90fa9a2005-11-07 17:19:50 -050036{
Al Viro0f0afb12011-11-24 20:43:10 -050037 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
38 mnt->mnt.mnt_flags |= MNT_SHARED;
Ram Paib90fa9a2005-11-07 17:19:50 -050039}
40
Al Viro0f0afb12011-11-24 20:43:10 -050041void change_mnt_propagation(struct mount *, int);
Al Viro84d17192013-03-15 10:53:28 -040042int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
Al Viro38129a12014-03-20 21:10:51 -040043 struct hlist_head *);
Eric W. Biedermanc003b262014-12-18 13:10:48 -060044int propagate_umount(struct list_head *);
Al Viro1ab59732011-11-24 21:35:16 -050045int propagate_mount_busy(struct mount *, int);
Eric W. Biederman5d884572015-01-03 05:39:35 -060046void propagate_mount_unlock(struct mount *);
Daniel Rosenberg00fdd652016-10-26 15:29:51 -070047void propagate_remount(struct mount *);
Al Viro4b8b21f2011-11-24 19:54:23 -050048void mnt_release_group_id(struct mount *);
Al Viro6fc78712011-11-24 23:35:54 -050049int get_dominating_id(struct mount *mnt, const struct path *root);
Al Viro83adc752011-11-24 22:37:54 -050050unsigned int mnt_get_count(struct mount *mnt);
Al Viro84d17192013-03-15 10:53:28 -040051void mnt_set_mountpoint(struct mount *, struct mountpoint *,
Al Viro44d964d62011-11-24 21:28:22 -050052 struct mount *);
Eric W. Biederman1064f872017-01-20 18:28:35 +130053void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
54 struct mount *mnt);
Al Viro87129cc2011-11-24 21:24:27 -050055struct mount *copy_tree(struct mount *, struct dentry *, int);
Al Viro643822b2011-11-24 22:00:28 -050056bool is_path_reachable(struct mount *, struct dentry *,
Al Viroafac7cb2011-11-23 19:34:49 -050057 const struct path *root);
Eric W. Biedermand2921682016-09-28 00:27:17 -050058int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
Ram Pai07b20882005-11-07 17:19:07 -050059#endif /* _LINUX_PNODE_H */