125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/* $NetBSD: nice.c,v 1.14 2007/12/15 19:44:52 perry 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. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__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
|
|
__RCSID("$NetBSD: nice.c,v 1.14 2007/12/15 19:44:52 perry Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <limits.h>
|
|
#include <locale.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <err.h>
|
|
#include <unistd.h>
|
|
|
|
#define DEFNICE 10
|
|
|
|
static void usage(void) __dead;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
char *ep;
|
|
int niceness = DEFNICE;
|
|
int c;
|
|
long tmp;
|
|
|
|
setprogname(argv[0]);
|
|
(void)setlocale(LC_ALL, "");
|
|
|
|
/* handle obsolete -number syntax */
|
|
if (argc > 1 && argv[1][0] == '-' &&
|
|
isdigit((unsigned char)argv[1][1])) {
|
|
niceness = atoi (argv[1] + 1);
|
|
argc--; argv++;
|
|
}
|
|
|
|
while ((c = getopt (argc, argv, "n:")) != -1) {
|
|
switch (c) {
|
|
case 'n':
|
|
errno = 0;
|
|
tmp = strtol(optarg, &ep, 10);
|
|
if (*ep != '\0' || tmp < INT_MIN || tmp > INT_MAX)
|
|
errx(EXIT_FAILURE, "invalid argument: `%s'",
|
|
optarg);
|
|
niceness = (int)tmp;
|
|
break;
|
|
default:
|
|
usage();
|
|
break;
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc == 0)
|
|
usage();
|
|
|
|
errno = 0;
|
|
niceness += getpriority(PRIO_PROCESS, 0);
|
|
if (errno) {
|
|
err(EXIT_FAILURE, "getpriority");
|
|
/* NOTREACHED */
|
|
}
|
|
if (setpriority(PRIO_PROCESS, 0, niceness) == -1) {
|
|
warn("setpriority");
|
|
}
|
|
|
|
(void)execvp(argv[0], &argv[0]);
|
|
err((errno == ENOENT || errno == ENOTDIR) ? 127 : 126, "%s", argv[0]);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr,
|
|
"Usage: %s [ -n increment ] utility [ argument ...]\n",
|
|
getprogname());
|
|
exit(EXIT_FAILURE);
|
|
}
|