Function reap_getpids

freebsd/kern/kern_procctl.c:200–240

}

static int
reap_getpids(struct thread *td, struct proc *p, struct procctl_reaper_pids *rp)
{
	struct proc *reap, *p2;
	struct procctl_reaper_pidinfo *pi, *pip;
	u_int i, n;
	int error;

	sx_assert(&proctree_lock, SX_LOCKED);
	PROC_UNLOCK(p);
	reap = (p->p_treeflag & P_TREE_REAPER) == 0 ? p->p_reaper : p;
	n = i = 0;
	error = 0;
	LIST_FOREACH(p2, &reap->p_reaplist, p_reapsibling)
		n++;
	sx_unlock(&proctree_lock);
	if (rp->rp_count < n)
		n = rp->rp_count;
	pi = malloc(n * sizeof(*pi), M_TEMP, M_WAITOK);
	sx_slock(&proctree_lock);
	LIST_FOREACH(p2, &reap->p_reaplist, p_reapsibling) {
		if (i == n)
			break;
		pip = &pi[i];
		bzero(pip, sizeof(*pip));
		pip->pi_pid = p2->p_pid;
		pip->pi_subtree = p2->p_reapsubtree;
		pip->pi_flags = REAPER_PIDINFO_VALID;
		if (proc_realparent(p2) == reap)
			pip->pi_flags |= REAPER_PIDINFO_CHILD;
		if ((p2->p_treeflag & P_TREE_REAPER) != 0)
			pip->pi_flags |= REAPER_PIDINFO_REAPER;
		i++;
	}
	sx_sunlock(&proctree_lock);
	error = copyout(pi, rp->rp_pids, i * sizeof(*pi));
	free(pi, M_TEMP);
	sx_slock(&proctree_lock);
	PROC_LOCK(p);
	return (error);
}

static void
reap_kill_proc(struct thread *td, struct proc *p2, ksiginfo_t *ksi,