linux-master/kernel/user_namespace.c

420  *	@targ: The user namespace we want a uid in.
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));
439  *	@targ: The user namespace we want a uid in.
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);
488  *	@targ: The user namespace we want a gid in.
491  *	Map @kgid into the user-namespace specified by @targ and
496  *	If @kgid has no mapping in @targ (gid_t)-1 is returned.
498 gid_t from_kgid(struct user_namespace *targ, kgid_t kgid)
501 	return map_id_up(&targ->gid_map, __kgid_val(kgid));
507  *	@targ: The user namespace we want a gid in.
510  *	Map @kgid into the user-namespace specified by @targ and
520  *	If @kgid has no mapping in @targ overflowgid is returned.
522 gid_t from_kgid_munged(struct user_namespace *targ, kgid_t kgid)
525 	gid = from_kgid(targ, kgid);
555  *	@targ: The user namespace we want a projid in.
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));
574  *	@targ: The user namespace we want a projid in.
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);