LXR linux/fs/pnode.h

   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
  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_PRIVATE              0x10
  25
  26static inline void set_mnt_shared(struct mount *mnt)
  27{
  28        mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
  29        mnt->mnt.mnt_flags |= MNT_SHARED;
  30}
  31
  32void change_mnt_propagation(struct mount *, int);
  33int propagate_mnt(struct mount *, struct dentry *, struct mount *,
  34                struct list_head *);
  35int propagate_umount(struct list_head *);
  36int propagate_mount_busy(struct mount *, int);
  37void mnt_release_group_id(struct mount *);
  38int get_dominating_id(struct mount *mnt, const struct path *root);
  39unsigned int mnt_get_count(struct mount *mnt);
  40void mnt_set_mountpoint(struct mount *, struct dentry *,
  41                        struct mount *);
  42void release_mounts(struct list_head *);
  43void umount_tree(struct mount *, int, struct list_head *);
  44struct mount *copy_tree(struct mount *, struct dentry *, int);
  45bool is_path_reachable(struct mount *, struct dentry *,
  46                         const struct path *root);
  47#endif /* _LINUX_PNODE_H */
  48