From 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe Mon Sep 17 00:00:00 2001 From: Kiyoshi Aman Date: Fri, 1 Feb 2019 22:55:37 +0000 Subject: initial population --- usr.bin/renice/renice.c | 181 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 181 insertions(+) create mode 100644 usr.bin/renice/renice.c (limited to 'usr.bin/renice/renice.c') diff --git a/usr.bin/renice/renice.c b/usr.bin/renice/renice.c new file mode 100644 index 0000000..977f081 --- /dev/null +++ b/usr.bin/renice/renice.c @@ -0,0 +1,181 @@ +/* $NetBSD: renice.c,v 1.18 2008/07/21 14:19:25 lukem Exp $ */ + +/* + * 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. 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 +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +/*static char sccsid[] = "from: @(#)renice.c 8.1 (Berkeley) 6/9/93";*/ +__RCSID("$NetBSD: renice.c,v 1.18 2008/07/21 14:19:25 lukem Exp $"); +#endif /* not lint */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +static int getnum(const char *, const char *, int *); +static int donice(int, id_t, int, int); +static void usage(void) __dead; + +/* + * Change the priority (nice) of processes + * or groups of processes which are already + * running. + */ +int +main(int argc, char **argv) +{ + int which = PRIO_PROCESS; + int prio, errs = 0, incr = 0; + id_t who = 0; + + argc--, argv++; + if (argc < 2) + usage(); + if (strcmp(*argv, "-n") == 0) { + incr = 1; + argc--, argv++; + if (argc == 0) + usage(); + } + if (getnum("priority", *argv, &prio)) + return 1; + argc--, argv++; + 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) { + struct passwd *pwd = getpwnam(*argv); + + if (pwd == NULL) { + warnx("%s: unknown user", *argv); + errs++; + continue; + } + who = (id_t)pwd->pw_uid; + } else { + int twho; + if (getnum("pid", *argv, &twho)) { + errs++; + continue; + } + if (twho < 0) { + warnx("%s: bad value", *argv); + errs++; + continue; + } + who = (id_t)twho; + } + errs += donice(which, who, prio, incr); + } + return errs == 0 ? EXIT_SUCCESS : EXIT_FAILURE; +} + +static int +getnum(const char *com, const char *str, int *val) +{ + long v; + char *ep; + + errno = 0; + v = strtol(str, &ep, 0); + + if (*ep) { + warnx("Bad %s argument: %s", com, str); + return 1; + } + if ((v == LONG_MIN || v == LONG_MAX) && errno == ERANGE) { + warn("Invalid %s argument: %s", com, str); + return 1; + } + + *val = (int)v; + return 0; +} + +static int +donice(int which, id_t who, int prio, int incr) +{ + int oldprio; + + errno = 0; + if ((oldprio = getpriority(which, who)) == -1 && errno != 0) { + warn("%d: getpriority", who); + return 1; + } + + if (incr) + prio = oldprio + prio; + + if (prio > PRIO_MAX) + prio = PRIO_MAX; + if (prio < PRIO_MIN) + prio = PRIO_MIN; + + if (setpriority(which, who, prio) == -1) { + warn("%d: setpriority", who); + return 1; + } + (void)printf("%d: old priority %d, new priority %d\n", + who, oldprio, prio); + return 0; +} + +static void +usage(void) +{ + + (void)fprintf(stderr, "Usage: %s [ | -n ] ", + getprogname()); + (void)fprintf(stderr, "[[-p] ...] [-g ...] "); + (void)fprintf(stderr, "[-u ...]\n"); + exit(1); +} -- cgit v1.2.3-60-g2f50