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/* $OpenBSD: nice.c,v 1.3 2000/11/07 09:04:21 kevlo Exp $ */
/* $NetBSD: nice.c,v 1.9 1995/08/31 23:30:58 jtc Exp $ */
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)nice.c 5.4 (Berkeley) 6/1/90";
#endif
static char rcsid[] = "$OpenBSD: nice.c,v 1.3 2000/11/07 09:04:21 kevlo Exp $";
#endif /* not lint */
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <ctype.h>
#include <errno.h>
#include <err.h>
#include <unistd.h>
#define DEFNICE 10
static void usage __P((void));
int
main(argc, argv)
int argc;
char **argv;
{
int niceness = DEFNICE;
int c;
setlocale(LC_ALL, "");
/* handle obsolete -number syntax */
if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) {
niceness = atoi (argv[1] + 1);
argc--; argv++;
}
while ((c = getopt (argc, argv, "n:")) != -1) {
switch (c) {
case 'n':
niceness = atoi (optarg);
break;
case '?':
default:
usage();
break;
}
}
argc -= optind; argv += optind;
if (argc == 0)
usage();
errno = 0;
niceness += getpriority(PRIO_PROCESS, 0);
if (errno) {
err (1, "getpriority");
/* NOTREACHED */
}
if (setpriority(PRIO_PROCESS, 0, niceness)) {
warn ("setpriority");
}
execvp(argv[0], &argv[0]);
err ((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
/* NOTREACHED */
}
static void
usage()
{
(void)fprintf(stderr,
"usage: nice [ -n increment ] utility [ argument ...]\n");
exit(1);
}
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