MSGBUF_CONTROL_NAME
if (sysctlbyname(MSGBUF_CONTROL_NAME, &unprivileged_read_msgbuf, &len,
if (sysctlbyname(MSGBUF_CONTROL_NAME, NULL, NULL, &newval,
if (sysctlbyname(MSGBUF_CONTROL_NAME, &unprivileged_read_msgbuf,
if (sysctlbyname(MSGBUF_CONTROL_NAME, NULL, NULL, &newval,