PCSTRACE
oper = PCSTRACE;
ctl.cmd = PCSTRACE;
ctl.cmd = PCSTRACE;
cmd[2] = PCSTRACE;
cmd[0] = PCSTRACE;
{ PCSTRACE, sizeof (sigset_t), NULL, NULL },
case PCSTRACE: /* set signal trace mask */
{ PCSTRACE, sizeof (sigset_t), NULL, NULL },
case PCSTRACE: /* set signal trace mask */