blob: a9a6576540addb55510a41df67cce73339460208
| 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 | |
| 35 | static 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 | |
| 41 | void change_mnt_propagation(struct mount *, int); |
| 42 | int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, |
| 43 | struct hlist_head *); |
| 44 | int propagate_umount(struct list_head *); |
| 45 | int propagate_mount_busy(struct mount *, int); |
| 46 | void propagate_mount_unlock(struct mount *); |
| 47 | void propagate_remount(struct mount *); |
| 48 | void mnt_release_group_id(struct mount *); |
| 49 | int get_dominating_id(struct mount *mnt, const struct path *root); |
| 50 | unsigned int mnt_get_count(struct mount *mnt); |
| 51 | void mnt_set_mountpoint(struct mount *, struct mountpoint *, |
| 52 | struct mount *); |
| 53 | void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, |
| 54 | struct mount *mnt); |
| 55 | struct mount *copy_tree(struct mount *, struct dentry *, int); |
| 56 | bool is_path_reachable(struct mount *, struct dentry *, |
| 57 | const struct path *root); |
| 58 | int count_mounts(struct mnt_namespace *ns, struct mount *mnt); |
| 59 | #endif /* _LINUX_PNODE_H */ |
| 60 |