UNIX_DIAG_UID - Linux

Symbol: UNIX_DIAG_UID

net/unix/diag.c

return nla_put(nlskb, UNIX_DIAG_UID, sizeof(uid_t), &uid);

tools/testing/selftests/net/af_unix/diag_uid.c

ASSERT_EQ(attr->rta_type, UNIX_DIAG_UID);