pnode.h 1.5 KB

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  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. #include <linux/list.h>
  11. #include "mount.h"
  12. #define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
  13. #define IS_MNT_SLAVE(m) ((m)->mnt_master)
  14. #define IS_MNT_NEW(m) (!(m)->mnt_ns)
  15. #define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
  16. #define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
  17. #define CL_EXPIRE 0x01
  18. #define CL_SLAVE 0x02
  19. #define CL_COPY_UNBINDABLE 0x04
  20. #define CL_MAKE_SHARED 0x08
  21. #define CL_PRIVATE 0x10
  22. #define CL_SHARED_TO_SLAVE 0x20
  23. #define CL_UNPRIVILEGED 0x40
  24. #define CL_COPY_MNT_NS_FILE 0x80
  25. #define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
  26. static 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. void change_mnt_propagation(struct mount *, int);
  32. int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
  33. struct list_head *);
  34. int propagate_umount(struct list_head *);
  35. int propagate_mount_busy(struct mount *, int);
  36. void mnt_release_group_id(struct mount *);
  37. int get_dominating_id(struct mount *mnt, const struct path *root);
  38. unsigned int mnt_get_count(struct mount *mnt);
  39. void mnt_set_mountpoint(struct mount *, struct mountpoint *,
  40. struct mount *);
  41. void umount_tree(struct mount *, int);
  42. struct mount *copy_tree(struct mount *, struct dentry *, int);
  43. bool is_path_reachable(struct mount *, struct dentry *,
  44. const struct path *root);
  45. #endif /* _LINUX_PNODE_H */