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>
12 #include <linux/mount.h>
13
14 #define IS_MNT_SHARED(mnt) (mnt->mnt_flags & MNT_SHARED)
15 #define IS_MNT_SLAVE(mnt) (mnt->mnt_master)
16 #define IS_MNT_NEW(mnt) (!mnt->mnt_ns)
17 #define CLEAR_MNT_SHARED(mnt) (mnt->mnt_flags &= ~MNT_SHARED)
18 #define IS_MNT_UNBINDABLE(mnt) (mnt->mnt_flags & MNT_UNBINDABLE)
19
20 #define CL_EXPIRE 0x01
21 #define CL_SLAVE 0x02
22 #define CL_COPY_ALL 0x04
23 #define CL_MAKE_SHARED 0x08
24 #define CL_PROPAGATION 0x10
25 #define CL_PRIVATE 0x20
26
27 static inline void set_mnt_shared(struct vfsmount *mnt)
28 {
29 mnt->mnt_flags &= ~MNT_PNODE_MASK;
30 mnt->mnt_flags |= MNT_SHARED;
31 }
32
33 void change_mnt_propagation(struct vfsmount *, int);
34 int propagate_mnt(struct vfsmount *, struct dentry *, struct vfsmount *,
35 struct list_head *);
36 int propagate_umount(struct list_head *);
37 int propagate_mount_busy(struct vfsmount *, int);
38 void mnt_release_group_id(struct vfsmount *);
39 int get_dominating_id(struct vfsmount *mnt, const struct path *root);
40 #endif /* _LINUX_PNODE_H */
41
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