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 "mount.h" 13 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) 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) 22#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED) 23 24#define CL_EXPIRE 0x01 25#define CL_SLAVE 0x02 26#define CL_COPY_UNBINDABLE 0x04 27#define CL_MAKE_SHARED 0x08 28#define CL_PRIVATE 0x10 29#define CL_SHARED_TO_SLAVE 0x20 30#define CL_UNPRIVILEGED 0x40 31#define CL_COPY_MNT_NS_FILE 0x80 32 33#define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE) 34 35static inline void set_mnt_shared(struct mount *mnt) 36{ 37 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK; 38 mnt->mnt.mnt_flags |= MNT_SHARED; 39} 40 41void change_mnt_propagation(struct mount *, int); 42int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, 43 struct hlist_head *); 44int propagate_umount(struct list_head *); 45int propagate_mount_busy(struct mount *, int); 46void propagate_mount_unlock(struct mount *); 47void mnt_release_group_id(struct mount *); 48int get_dominating_id(struct mount *mnt, const struct path *root); 49unsigned int mnt_get_count(struct mount *mnt); 50void mnt_set_mountpoint(struct mount *, struct mountpoint *, 51 struct mount *); 52struct mount *copy_tree(struct mount *, struct dentry *, int); 53bool is_path_reachable(struct mount *, struct dentry *, 54 const struct path *root); 55#endif /* _LINUX_PNODE_H */ 56