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 20 #define CL_EXPIRE 0x01 21 #define CL_SLAVE 0x02 22 #define CL_COPY_UNBINDABLE 0x04 23 #define CL_MAKE_SHARED 0x08 24 #define CL_PRIVATE 0x10 25 #define CL_SHARED_TO_SLAVE 0x20 26 #define CL_UNPRIVILEGED 0x40 27 #define CL_COPY_MNT_NS_FILE 0x80 28 29 #define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE) 30 31 static inline void set_mnt_shared(struct mount *mnt) 32 { 33 mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK; 34 mnt->mnt.mnt_flags |= MNT_SHARED; 35 } 36 37 void change_mnt_propagation(struct mount *, int); 38 int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, 39 struct list_head *); 40 int propagate_umount(struct list_head *); 41 int propagate_mount_busy(struct mount *, int); 42 void mnt_release_group_id(struct mount *); 43 int get_dominating_id(struct mount *mnt, const struct path *root); 44 unsigned int mnt_get_count(struct mount *mnt); 45 void mnt_set_mountpoint(struct mount *, struct mountpoint *, 46 struct mount *); 47 void umount_tree(struct mount *, int); 48 struct mount *copy_tree(struct mount *, struct dentry *, int); 49 bool is_path_reachable(struct mount *, struct dentry *, 50 const struct path *root); 51 #endif /* _LINUX_PNODE_H */ 52