1/*
2 * Mini renice implementation for busybox
3 *
4 *
5 * Copyright (C) 2000 Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#include <stdio.h>
24#include <errno.h>
25#include <stdlib.h>
26#include <sys/time.h>
27#include <sys/resource.h>
28#include "busybox.h"
29
30
31extern int renice_main(int argc, char **argv)
32{
33	int prio, status = EXIT_SUCCESS;
34
35	if (argc < 3)	show_usage();
36
37	prio = atoi(*++argv);
38	if (prio > 20)		prio = 20;
39	if (prio < -20)		prio = -20;
40
41	while (*++argv) {
42		int ps = atoi(*argv);
43		int oldp = getpriority(PRIO_PROCESS, ps);
44
45		if (setpriority(PRIO_PROCESS, ps, prio) == 0) {
46			printf("%d: old priority %d, new priority %d\n", ps, oldp, prio );
47		} else {
48			perror_msg("%d: setpriority", ps);
49			status = EXIT_FAILURE;
50		}
51	}
52
53	return status;
54}
55