PS_NOCLDSTOP
(p1->p_sflag & (PS_STOPFORK | PS_STOPEXEC | PS_NOCLDSTOP));
(p1->p_sflag & (PS_STOPFORK | PS_STOPEXEC | PS_NOCLDSTOP));
PS_NOCLDSTOP, P_NOCLDSTOP,
sigswitch(PS_NOCLDSTOP, p->p_xsig, false);
proc_stop_done(p, PS_NOCLDSTOP);
proc_stop_done(p, PS_NOCLDSTOP);
p->p_sflag &= ~PS_NOCLDSTOP;
p->p_sflag |= PS_NOCLDSTOP;
p->p_sflag &= ~PS_NOCLDSTOP;