189 lines
5.4 KiB
C
189 lines
5.4 KiB
C
/*
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* Copyright (c) 1983, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
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* - added Native Language Support
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <stdio.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "nls.h"
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#include "c.h"
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#include "closestream.h"
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static int donice(int,int,int);
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static void __attribute__((__noreturn__)) usage(FILE *out)
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{
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fputs(_("\nUsage:\n"), out);
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fprintf(out,
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_(" %1$s [-n] <priority> [-p|--pid] <pid>...\n"
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" %1$s [-n] <priority> -g|--pgrp <pgid>...\n"
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" %1$s [-n] <priority> -u|--user <user>...\n"),
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program_invocation_short_name);
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fputs(_("\nOptions:\n"), out);
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fputs(_(" -g, --pgrp <id> interpret argument as process group ID\n"
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" -n, --priority <num> specify the nice increment value\n"
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" -p, --pid <id> interpret argument as process ID (default)\n"
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" -u, --user <name|id> interpret argument as username or user ID\n"
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" -h, --help display help text and exit\n"
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" -V, --version display version information and exit\n"), out);
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fputs(_("\nFor more information see renice(1).\n"), out);
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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/*
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* Change the priority (the nice value) of processes
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* or groups of processes which are already running.
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*/
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int
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main(int argc, char **argv)
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{
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int which = PRIO_PROCESS;
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int who = 0, prio, errs = 0;
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char *endptr = NULL;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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atexit(close_stdout);
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argc--;
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argv++;
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if (argc == 1) {
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if (strcmp(*argv, "-h") == 0 ||
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strcmp(*argv, "--help") == 0)
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usage(stdout);
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if (strcmp(*argv, "-v") == 0 ||
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strcmp(*argv, "-V") == 0 ||
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strcmp(*argv, "--version") == 0) {
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printf(_("%s from %s\n"),
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program_invocation_short_name, PACKAGE_STRING);
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exit(EXIT_SUCCESS);
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}
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}
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if (argc < 2)
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usage(stderr);
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if (strcmp(*argv, "-n") == 0 || strcmp(*argv, "--priority") == 0) {
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argc--;
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argv++;
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}
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prio = strtol(*argv, &endptr, 10);
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if (*endptr)
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usage(stderr);
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argc--;
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argv++;
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for (; argc > 0; argc--, argv++) {
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if (strcmp(*argv, "-g") == 0 || strcmp(*argv, "--pgrp") == 0) {
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which = PRIO_PGRP;
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continue;
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}
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if (strcmp(*argv, "-u") == 0 || strcmp(*argv, "--user") == 0) {
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which = PRIO_USER;
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continue;
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}
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if (strcmp(*argv, "-p") == 0 || strcmp(*argv, "--pid") == 0) {
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which = PRIO_PROCESS;
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continue;
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}
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if (which == PRIO_USER) {
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register struct passwd *pwd = getpwnam(*argv);
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if (pwd == NULL) {
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warnx(_("unknown user %s"), *argv);
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errs = 1;
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continue;
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}
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who = pwd->pw_uid;
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} else {
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who = strtol(*argv, &endptr, 10);
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if (who < 0 || *endptr) {
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warnx(_("bad value %s"), *argv);
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errs = 1;
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continue;
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}
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}
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errs |= donice(which, who, prio);
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}
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return errs != 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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static int
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donice(int which, int who, int prio) {
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int oldprio, newprio;
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const char *idtype = _("process ID");
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if (which == PRIO_USER)
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idtype = _("user ID");
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else if (which == PRIO_PGRP)
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idtype = _("process group ID");
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errno = 0;
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oldprio = getpriority(which, who);
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if (oldprio == -1 && errno) {
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warn(_("failed to get priority for %d (%s)"), who, idtype);
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return 1;
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}
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if (setpriority(which, who, prio) < 0) {
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warn(_("failed to set priority for %d (%s)"), who, idtype);
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return 1;
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}
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errno = 0;
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newprio = getpriority(which, who);
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if (newprio == -1 && errno) {
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warn(_("failed to get priority for %d (%s)"), who, idtype);
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return 1;
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}
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printf(_("%d (%s) old priority %d, new priority %d\n"),
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who, idtype, oldprio, newprio);
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return 0;
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}
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