142 lines
3.8 KiB
C
142 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 1983, 1989, 1993
|
|
* 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
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1983, 1989, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)renice.c 8.1 (Berkeley) 6/9/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <pwd.h>
|
|
|
|
int donice __P((int, int, int));
|
|
static void usage __P((void));
|
|
|
|
/*
|
|
* Change the priority (nice) of processes
|
|
* or groups of processes which are already
|
|
* running.
|
|
*/
|
|
int
|
|
main(argc, argv)
|
|
char **argv;
|
|
{
|
|
int which = PRIO_PROCESS;
|
|
int who = 0, prio, errs = 0;
|
|
|
|
argc--, argv++;
|
|
if (argc < 2)
|
|
usage();
|
|
prio = atoi(*argv);
|
|
argc--, argv++;
|
|
if (prio > PRIO_MAX)
|
|
prio = PRIO_MAX;
|
|
if (prio < PRIO_MIN)
|
|
prio = PRIO_MIN;
|
|
for (; argc > 0; argc--, argv++) {
|
|
if (strcmp(*argv, "-g") == 0) {
|
|
which = PRIO_PGRP;
|
|
continue;
|
|
}
|
|
if (strcmp(*argv, "-u") == 0) {
|
|
which = PRIO_USER;
|
|
continue;
|
|
}
|
|
if (strcmp(*argv, "-p") == 0) {
|
|
which = PRIO_PROCESS;
|
|
continue;
|
|
}
|
|
if (which == PRIO_USER) {
|
|
register struct passwd *pwd = getpwnam(*argv);
|
|
|
|
if (pwd == NULL) {
|
|
warnx("%s: unknown user", *argv);
|
|
continue;
|
|
}
|
|
who = pwd->pw_uid;
|
|
} else {
|
|
who = atoi(*argv);
|
|
if (who < 0) {
|
|
warnx("%s: bad value", *argv);
|
|
continue;
|
|
}
|
|
}
|
|
errs += donice(which, who, prio);
|
|
}
|
|
exit(errs != 0);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
fprintf(stderr,
|
|
"usage: renice priority [ [ -p ] pids ] [ [ -g ] pgrps ] [ [ -u ] users ]\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
donice(which, who, prio)
|
|
int which, who, prio;
|
|
{
|
|
int oldprio;
|
|
|
|
errno = 0, oldprio = getpriority(which, who);
|
|
if (oldprio == -1 && errno) {
|
|
warn("%d: getpriority", who);
|
|
return (1);
|
|
}
|
|
if (setpriority(which, who, prio) < 0) {
|
|
warn("%d: setpriority", who);
|
|
return (1);
|
|
}
|
|
printf("%d: old priority %d, new priority %d\n", who, oldprio, prio);
|
|
return (0);
|
|
}
|