PCSHOLD
cmd[0] = PCSHOLD;
*ctlp++ = PCSHOLD;
*ctlp++ = PCSHOLD;
*ctlp++ = PCSHOLD;
*ctlp++ = PCSHOLD;
cmd[0] = PCSHOLD;
case PCSHOLD: /* set signal-hold mask */
{ PCSHOLD, sizeof (sigset_t), NULL, NULL },
case PCSHOLD: /* set signal-hold mask */
{ PCSHOLD, sizeof (sigset_t), NULL, NULL },