19b50d902SRodney W. Grimes /* 29b50d902SRodney W. Grimes * Copyright (c) 1989, 1993, 1994 39b50d902SRodney W. Grimes * The Regents of the University of California. All rights reserved. 49b50d902SRodney W. Grimes * 59b50d902SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 69b50d902SRodney W. Grimes * modification, are permitted provided that the following conditions 79b50d902SRodney W. Grimes * are met: 89b50d902SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 99b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 109b50d902SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 119b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 129b50d902SRodney W. Grimes * documentation and/or other materials provided with the distribution. 13*fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors 149b50d902SRodney W. Grimes * may be used to endorse or promote products derived from this software 159b50d902SRodney W. Grimes * without specific prior written permission. 169b50d902SRodney W. Grimes * 179b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 189b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 199b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 209b50d902SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 219b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 229b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 239b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 249b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 259b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 269b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 279b50d902SRodney W. Grimes * SUCH DAMAGE. 289b50d902SRodney W. Grimes */ 299b50d902SRodney W. Grimes 309b50d902SRodney W. Grimes #ifndef lint 31ae1a490dSDavid Malone static const char copyright[] = 329b50d902SRodney W. Grimes "@(#) Copyright (c) 1989, 1993, 1994\n\ 339b50d902SRodney W. Grimes The Regents of the University of California. All rights reserved.\n"; 349b50d902SRodney W. Grimes #endif /* not lint */ 359b50d902SRodney W. Grimes 369f5b04e9SDavid Malone #if 0 379b50d902SRodney W. Grimes #ifndef lint 389f5b04e9SDavid Malone static char sccsid[] = "@(#)nice.c 8.2 (Berkeley) 4/16/94"; 399b50d902SRodney W. Grimes #endif /* not lint */ 409f5b04e9SDavid Malone #endif 419f5b04e9SDavid Malone 429f5b04e9SDavid Malone #include <sys/cdefs.h> 439f5b04e9SDavid Malone __FBSDID("$FreeBSD$"); 449b50d902SRodney W. Grimes 459b50d902SRodney W. Grimes #include <sys/types.h> 469b50d902SRodney W. Grimes #include <sys/time.h> 479b50d902SRodney W. Grimes #include <sys/resource.h> 489b50d902SRodney W. Grimes 499b50d902SRodney W. Grimes #include <ctype.h> 509b50d902SRodney W. Grimes #include <err.h> 519b50d902SRodney W. Grimes #include <errno.h> 527e91d5f9STim J. Robbins #include <limits.h> 539b50d902SRodney W. Grimes #include <stdio.h> 549b50d902SRodney W. Grimes #include <stdlib.h> 559b50d902SRodney W. Grimes #include <unistd.h> 569b50d902SRodney W. Grimes #include <string.h> 579b50d902SRodney W. Grimes 589b50d902SRodney W. Grimes #define DEFNICE 10 599b50d902SRodney W. Grimes 60d3cb5dedSWarner Losh void usage(void); 619b50d902SRodney W. Grimes 629b50d902SRodney W. Grimes int 63f4ac32deSDavid Malone main(int argc, char *argv[]) 649b50d902SRodney W. Grimes { 657e91d5f9STim J. Robbins long niceness = DEFNICE; 667e91d5f9STim J. Robbins int ch; 677e91d5f9STim J. Robbins char *ep; 689b50d902SRodney W. Grimes 697e91d5f9STim J. Robbins /* Obsolescent syntax: -number, --number */ 707e91d5f9STim J. Robbins if (argc >= 2 && argv[1][0] == '-' && (argv[1][1] == '-' || 717e91d5f9STim J. Robbins isdigit((unsigned char)argv[1][1])) && strcmp(argv[1], "--") != 0) 727e91d5f9STim J. Robbins if (asprintf(&argv[1], "-n%s", argv[1] + 1) < 0) 737e91d5f9STim J. Robbins err(1, "asprintf"); 747e91d5f9STim J. Robbins 757e91d5f9STim J. Robbins while ((ch = getopt(argc, argv, "n:")) != -1) { 767e91d5f9STim J. Robbins switch (ch) { 777e91d5f9STim J. Robbins case 'n': 787e91d5f9STim J. Robbins errno = 0; 797e91d5f9STim J. Robbins niceness = strtol(optarg, &ep, 10); 807e91d5f9STim J. Robbins if (ep == optarg || *ep != '\0' || errno || 817e91d5f9STim J. Robbins niceness < INT_MIN || niceness > INT_MAX) 827e91d5f9STim J. Robbins errx(1, "%s: invalid nice value", optarg); 837e91d5f9STim J. Robbins break; 847e91d5f9STim J. Robbins default: 855a52948cSWolfram Schneider usage(); 869ef5c48bSBill Fumerola } 877e91d5f9STim J. Robbins } 887e91d5f9STim J. Robbins argc -= optind; 897e91d5f9STim J. Robbins argv += optind; 909b50d902SRodney W. Grimes 917e91d5f9STim J. Robbins if (argc == 0) 929b50d902SRodney W. Grimes usage(); 939b50d902SRodney W. Grimes 949b50d902SRodney W. Grimes errno = 0; 959b50d902SRodney W. Grimes niceness += getpriority(PRIO_PROCESS, 0); 969b50d902SRodney W. Grimes if (errno) 97c8d3b41dSTim J. Robbins warn("getpriority"); 98c8d3b41dSTim J. Robbins else if (setpriority(PRIO_PROCESS, 0, (int)niceness)) 99c8d3b41dSTim J. Robbins warn("setpriority"); 1007e91d5f9STim J. Robbins execvp(*argv, argv); 1017e91d5f9STim J. Robbins err(errno == ENOENT ? 127 : 126, "%s", *argv); 1029b50d902SRodney W. Grimes } 1039b50d902SRodney W. Grimes 1049b50d902SRodney W. Grimes void 105f4ac32deSDavid Malone usage(void) 1069b50d902SRodney W. Grimes { 1077e91d5f9STim J. Robbins 108f682f10cSRuslan Ermilov (void)fprintf(stderr, 109f682f10cSRuslan Ermilov "usage: nice [-n increment] utility [argument ...]\n"); 1109b50d902SRodney W. Grimes exit(1); 1119b50d902SRodney W. Grimes } 112