getsn
len = getsn(buf, sizeof(buf));
len = getsn(buf, sizeof(buf));
i = getsn(userconf_argbuf, sizeof(userconf_argbuf));
if (getsn(userconf_cmdbuf, sizeof(userconf_cmdbuf)) > 0 &&
i = getsn(userconf_argbuf, sizeof(userconf_argbuf));
size_t getsn(char *, size_t)