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 <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 */