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#define CL_SHARED_TO_SLAVE      0x20
  26#define CL_UNPRIVILEGED         0x40
  27
  28static inline void set_mnt_shared(struct mount *mnt)
  29{
  30        mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
  31        mnt->mnt.mnt_flags |= MNT_SHARED;
  32}
  33
  34void change_mnt_propagation(struct mount *, int);
  35int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
  36                struct list_head *);
  37int propagate_umount(struct list_head *);
  38int propagate_mount_busy(struct mount *, int);
  39void mnt_release_group_id(struct mount *);
  40int get_dominating_id(struct mount *mnt, const struct path *root);
  41unsigned int mnt_get_count(struct mount *mnt);
  42void mnt_set_mountpoint(struct mount *, struct mountpoint *,
  43                        struct mount *);
  44void umount_tree(struct mount *, int);
  45struct mount *copy_tree(struct mount *, struct dentry *, int);
  46bool is_path_reachable(struct mount *, struct dentry *,
  47                         const struct path *root);
  48#endif /* _LINUX_PNODE_H */
  49