rsock_unix_sockaddr_len

gistfile1.txt

socklen_t
rsock_unix_sockaddr_len(VALUE path)
{
#ifdef __linux__
    if (RSTRING_PTR(path)[0] == '\0') {
        /* abstract namespace; see unix(7) for details. */
        return (socklen_t) offsetof(struct sockaddr_un, sun_path) +
            RSTRING_LEN(path);
    }
    else {
#endif
        return (socklen_t) sizeof(struct sockaddr_un);
#ifdef __linux__
    }
#endif
}