1/*	$NetBSD: nice.c,v 1.10 1997/10/19 06:28:04 lukem Exp $	*/
2
3/*
4 * Copyright (c) 1989 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37#ifndef lint
38__COPYRIGHT(
39    "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
40 All rights reserved.\n");
41#endif /* not lint */
42
43#ifndef lint
44#if 0
45static char sccsid[] = "@(#)nice.c	5.4 (Berkeley) 6/1/90";
46#endif
47__RCSID("$NetBSD: nice.c,v 1.10 1997/10/19 06:28:04 lukem Exp $");
48#endif /* not lint */
49
50#include <sys/types.h>
51#include <sys/time.h>
52#include <sys/resource.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56#include <locale.h>
57#include <ctype.h>
58#include <errno.h>
59#include <err.h>
60#include <unistd.h>
61
62#define	DEFNICE	10
63
64int	main __P((int, char **));
65static void usage __P((void));
66
67int
68main(argc, argv)
69	int argc;
70	char **argv;
71{
72	int niceness = DEFNICE;
73	int c;
74
75	setlocale(LC_ALL, "");
76
77        /* handle obsolete -number syntax */
78        if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) {
79		niceness = atoi (argv[1] + 1);
80                argc--; argv++;
81        }
82
83	while ((c = getopt (argc, argv, "n:")) != -1) {
84		switch (c) {
85		case 'n':
86			niceness = atoi (optarg);
87			break;
88
89		case '?':
90		default:
91			usage();
92			break;
93		}
94	}
95	argc -= optind; argv += optind;
96
97	if (argc == 0)
98		usage();
99
100	errno = 0;
101	niceness += getpriority(PRIO_PROCESS, 0);
102	if (errno) {
103		err (1, "getpriority");
104		/* NOTREACHED */
105	}
106	if (setpriority(PRIO_PROCESS, 0, niceness)) {
107		warn ("setpriority");
108	}
109
110	execvp(argv[0], &argv[0]);
111	err ((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
112	/* NOTREACHED */
113}
114
115static void
116usage()
117{
118	(void)fprintf(stderr,
119	    "usage: nice [ -n increment ] utility [ argument ...]\n");
120
121	exit(1);
122}
123