Ram Pai | 07b2088 | 2005-11-07 17:19:07 -0500 | [diff] [blame] | 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> |
Al Viro | b2dba1a | 2011-11-23 19:26:23 -0500 | [diff] [blame] | 12 | #include "mount.h" |
Ram Pai | 03e06e6 | 2005-11-07 17:19:33 -0500 | [diff] [blame] | 13 | |
Al Viro | fc7be13 | 2011-11-25 01:05:37 -0500 | [diff] [blame] | 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) |
Al Viro | f2ebb3a | 2014-02-27 09:35:45 -0500 | [diff] [blame] | 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) |
Eric W. Biederman | 0c56fe3 | 2015-01-05 13:38:04 -0600 | [diff] [blame] | 22 | #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED) |
Ram Pai | 03e06e6 | 2005-11-07 17:19:33 -0500 | [diff] [blame] | 23 | |
Ram Pai | b90fa9a | 2005-11-07 17:19:50 -0500 | [diff] [blame] | 24 | #define CL_EXPIRE 0x01 |
Ram Pai | a58b0eb | 2005-11-07 17:20:48 -0500 | [diff] [blame] | 25 | #define CL_SLAVE 0x02 |
Eric W. Biederman | 4ce5d2b | 2013-03-30 01:35:18 -0700 | [diff] [blame] | 26 | #define CL_COPY_UNBINDABLE 0x04 |
Ram Pai | b90fa9a | 2005-11-07 17:19:50 -0500 | [diff] [blame] | 27 | #define CL_MAKE_SHARED 0x08 |
Al Viro | 796a6b5 | 2010-01-16 13:28:47 -0500 | [diff] [blame] | 28 | #define CL_PRIVATE 0x10 |
Eric W. Biederman | 7a472ef | 2012-07-31 13:13:04 -0700 | [diff] [blame] | 29 | #define CL_SHARED_TO_SLAVE 0x20 |
Eric W. Biederman | 132c94e | 2013-03-22 04:08:05 -0700 | [diff] [blame] | 30 | #define CL_UNPRIVILEGED 0x40 |
Eric W. Biederman | 4ce5d2b | 2013-03-30 01:35:18 -0700 | [diff] [blame] | 31 | #define CL_COPY_MNT_NS_FILE 0x80 |
| 32 | |
| 33 | #define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE) |
Ram Pai | b90fa9a | 2005-11-07 17:19:50 -0500 | [diff] [blame] | 34 | |
Al Viro | 0f0afb1 | 2011-11-24 20:43:10 -0500 | [diff] [blame] | 35 | static inline void set_mnt_shared(struct mount *mnt) |
Ram Pai | b90fa9a | 2005-11-07 17:19:50 -0500 | [diff] [blame] | 36 | { |
Al Viro | 0f0afb1 | 2011-11-24 20:43:10 -0500 | [diff] [blame] | 37 | mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK; |
| 38 | mnt->mnt.mnt_flags |= MNT_SHARED; |
Ram Pai | b90fa9a | 2005-11-07 17:19:50 -0500 | [diff] [blame] | 39 | } |
| 40 | |
Al Viro | 0f0afb1 | 2011-11-24 20:43:10 -0500 | [diff] [blame] | 41 | void change_mnt_propagation(struct mount *, int); |
Al Viro | 84d1719 | 2013-03-15 10:53:28 -0400 | [diff] [blame] | 42 | int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, |
Al Viro | 38129a1 | 2014-03-20 21:10:51 -0400 | [diff] [blame] | 43 | struct hlist_head *); |
Eric W. Biederman | c003b26 | 2014-12-18 13:10:48 -0600 | [diff] [blame] | 44 | int propagate_umount(struct list_head *); |
Al Viro | 1ab5973 | 2011-11-24 21:35:16 -0500 | [diff] [blame] | 45 | int propagate_mount_busy(struct mount *, int); |
Eric W. Biederman | 5d88457 | 2015-01-03 05:39:35 -0600 | [diff] [blame] | 46 | void propagate_mount_unlock(struct mount *); |
Daniel Rosenberg | 00fdd65 | 2016-10-26 15:29:51 -0700 | [diff] [blame] | 47 | void propagate_remount(struct mount *); |
Al Viro | 4b8b21f | 2011-11-24 19:54:23 -0500 | [diff] [blame] | 48 | void mnt_release_group_id(struct mount *); |
Al Viro | 6fc7871 | 2011-11-24 23:35:54 -0500 | [diff] [blame] | 49 | int get_dominating_id(struct mount *mnt, const struct path *root); |
Al Viro | 83adc75 | 2011-11-24 22:37:54 -0500 | [diff] [blame] | 50 | unsigned int mnt_get_count(struct mount *mnt); |
Al Viro | 84d1719 | 2013-03-15 10:53:28 -0400 | [diff] [blame] | 51 | void mnt_set_mountpoint(struct mount *, struct mountpoint *, |
Al Viro | 44d964d6 | 2011-11-24 21:28:22 -0500 | [diff] [blame] | 52 | struct mount *); |
Eric W. Biederman | 1064f87 | 2017-01-20 18:28:35 +1300 | [diff] [blame] | 53 | void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, |
| 54 | struct mount *mnt); |
Al Viro | 87129cc | 2011-11-24 21:24:27 -0500 | [diff] [blame] | 55 | struct mount *copy_tree(struct mount *, struct dentry *, int); |
Al Viro | 643822b | 2011-11-24 22:00:28 -0500 | [diff] [blame] | 56 | bool is_path_reachable(struct mount *, struct dentry *, |
Al Viro | afac7cb | 2011-11-23 19:34:49 -0500 | [diff] [blame] | 57 | const struct path *root); |
Eric W. Biederman | d292168 | 2016-09-28 00:27:17 -0500 | [diff] [blame] | 58 | int count_mounts(struct mnt_namespace *ns, struct mount *mnt); |
Ram Pai | 07b2088 | 2005-11-07 17:19:07 -0500 | [diff] [blame] | 59 | #endif /* _LINUX_PNODE_H */ |