linux-master/kernel/user_namespace.c

534  *	make_kprojid - Map a user-namespace projid pair into a kprojid.
554  *	from_kprojid - Create a projid from a kprojid user-namespace pair.
556  *	@kprojid: The kernel internal project identifier to start with.
558  *	Map @kprojid into the user-namespace specified by @targ and
563  *	If @kprojid has no mapping in @targ (projid_t)-1 is returned.
565 projid_t from_kprojid(struct user_namespace *targ, kprojid_t kprojid)
568 	return map_id_up(&targ->projid_map, __kprojid_val(kprojid));
573  *	from_kprojid_munged - Create a projiid from a kprojid user-namespace pair.
575  *	@kprojid: The kernel internal projid to start with.
577  *	Map @kprojid into the user-namespace specified by @targ and
588  *	If @kprojid has no mapping in @targ OVERFLOW_PROJID is returned.
590 projid_t from_kprojid_munged(struct user_namespace *targ, kprojid_t kprojid)
593 	projid = from_kprojid(targ, kprojid);