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 mnt_release_group_id(struct mount *); 48 int get_dominating_id(struct mount *mnt, const struct path *root); 49 unsigned int mnt_get_count(struct mount *mnt); 50 void mnt_set_mountpoint(struct mount *, struct mountpoint *, 51 struct mount *); 52 void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, 53 struct mount *mnt); 54 struct mount *copy_tree(struct mount *, struct dentry *, int); 55 bool is_path_reachable(struct mount *, struct dentry *, 56 const struct path *root); 57 int count_mounts(struct mnt_namespace *ns, struct mount *mnt); 58 #endif /* _LINUX_PNODE_H */ 59