KEY_NEED_VIEW
key_ref = lookup_user_key(keyid, KEY_LOOKUP_PARTIAL, KEY_NEED_VIEW);
key_ref = lookup_user_key(id, KEY_LOOKUP_CREATE, KEY_NEED_VIEW);
key_ref = lookup_user_key(keyid, KEY_LOOKUP_PARTIAL, KEY_NEED_VIEW);
case KEY_NEED_VIEW: mask = KEY_OTH_VIEW; break;
rc = key_task_permission(key_ref, ctx.cred, KEY_NEED_VIEW);
case KEY_NEED_VIEW:
case KEY_NEED_VIEW: