linux-master/kernel/user_namespace.c

399  *	make_kuid - Map a user-namespace uid pair into a kuid.
403  *	Maps a user-namespace uid pair into a kernel internal kuid,
404  *	and returns that kuid.
419  *	from_kuid - Create a uid from a kuid user-namespace pair.
421  *	@kuid: The kernel internal uid to start with.
423  *	Map @kuid into the user-namespace specified by @targ and
428  *	If @kuid has no mapping in @targ (uid_t)-1 is returned.
430 uid_t from_kuid(struct user_namespace *targ, kuid_t kuid)
433 	return map_id_up(&targ->uid_map, __kuid_val(kuid));
438  *	from_kuid_munged - Create a uid from a kuid user-namespace pair.
440  *	@kuid: The kernel internal uid to start with.
442  *	Map @kuid into the user-namespace specified by @targ and
453  *	If @kuid has no mapping in @targ overflowuid is returned.
455 uid_t from_kuid_munged(struct user_namespace *targ, kuid_t kuid)
458 	uid = from_kuid(targ, kuid);
538  *	Maps a user-namespace uid pair into a kernel internal kuid,
539  *	and returns that kuid.