| | 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 | |
| | 23 | #define CL_EXPIRE 0x01 |
| | 24 | #define CL_SLAVE 0x02 |
| | 25 | #define CL_COPY_UNBINDABLE 0x04 |
| | 26 | #define CL_MAKE_SHARED 0x08 |
| | 27 | #define CL_PRIVATE 0x10 |
| | 28 | #define CL_SHARED_TO_SLAVE 0x20 |
| | 29 | #define CL_UNPRIVILEGED 0x40 |
| | 30 | #define CL_COPY_MNT_NS_FILE 0x80 |
| | 31 | |
| | 32 | #define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE) |
| | 33 | |
| | 34 | static inline void set_mnt_shared(struct mount *mnt) |
| | 35 | { |
| | 36 | mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK; |
| | 37 | mnt->mnt.mnt_flags |= MNT_SHARED; |
| | 38 | } |
| | 39 | |
| | 40 | void change_mnt_propagation(struct mount *, int); |
| | 41 | int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, |
| | 42 | struct hlist_head *); |
| | 43 | int propagate_umount(struct hlist_head *); |
| | 44 | int propagate_mount_busy(struct mount *, int); |
| | 45 | void mnt_release_group_id(struct mount *); |
| | 46 | int get_dominating_id(struct mount *mnt, const struct path *root); |
| | 47 | unsigned int mnt_get_count(struct mount *mnt); |
| | 48 | void mnt_set_mountpoint(struct mount *, struct mountpoint *, |
| | 49 | struct mount *); |
| | 50 | void umount_tree(struct mount *, int); |
| | 51 | struct mount *copy_tree(struct mount *, struct dentry *, int); |
| | 52 | bool is_path_reachable(struct mount *, struct dentry *, |
| | 53 | const struct path *root); |
| | 54 | #endif /* _LINUX_PNODE_H */ |
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