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/* $OpenBSD: nice.c,v 1.15 2015/10/19 18:53:35 deraadt 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. 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/resource.h>
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <ctype.h>
#include <errno.h>
#include <err.h>
#include <unistd.h>
#define DEFNICE 10
int main(int, char **);
static void usage(void);
int
main(int argc, char *argv[])
{
const char *errstr;
int prio = DEFNICE;
int c;
setlocale(LC_ALL, "");
if (pledge("stdio exec proc", NULL) == -1)
err(1, "pledge");
/* handle obsolete -number syntax */
if (argc > 1 && argv[1][0] == '-' &&
isdigit((unsigned char)argv[1][1])) {
prio = strtonum(argv[1] + 1, PRIO_MIN, PRIO_MAX, &errstr);
if (errstr)
errx(1, "increment is %s", errstr);
argc--;
argv++;
}
while ((c = getopt (argc, argv, "n:")) != -1) {
switch (c) {
case 'n':
prio = strtonum(optarg, PRIO_MIN, PRIO_MAX, &errstr);
if (errstr)
errx(1, "increment is %s", errstr);
break;
default:
usage();
break;
}
}
argc -= optind;
argv += optind;
if (argc == 0)
usage();
errno = 0;
prio += getpriority(PRIO_PROCESS, 0);
if (errno)
err(1, "getpriority");
if (setpriority(PRIO_PROCESS, 0, prio))
warn("setpriority");
if (pledge("stdio exec", NULL) == -1)
err(1, "pledge");
execvp(argv[0], &argv[0]);
err((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
}
static void
usage(void)
{
extern char *__progname;
fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n",
__progname);
exit(1);
}
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