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. 139b50d902SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 149b50d902SRodney W. Grimes * must display the following acknowledgement: 159b50d902SRodney W. Grimes * This product includes software developed by the University of 169b50d902SRodney W. Grimes * California, Berkeley and its contributors. 179b50d902SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 189b50d902SRodney W. Grimes * may be used to endorse or promote products derived from this software 199b50d902SRodney W. Grimes * without specific prior written permission. 209b50d902SRodney W. Grimes * 219b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 229b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 239b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 249b50d902SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 259b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 269b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 279b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 289b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 299b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 309b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 319b50d902SRodney W. Grimes * SUCH DAMAGE. 329b50d902SRodney W. Grimes */ 339b50d902SRodney W. Grimes 349b50d902SRodney W. Grimes #ifndef lint 359b50d902SRodney W. Grimes static char copyright[] = 369b50d902SRodney W. Grimes "@(#) Copyright (c) 1989, 1993, 1994\n\ 379b50d902SRodney W. Grimes The Regents of the University of California. All rights reserved.\n"; 389b50d902SRodney W. Grimes #endif /* not lint */ 399b50d902SRodney W. Grimes 409b50d902SRodney W. Grimes #ifndef lint 419b50d902SRodney W. Grimes static char sccsid[] = "@(#)nice.c 8.2 (Berkeley) 4/16/94"; 429b50d902SRodney W. Grimes #endif /* not lint */ 439b50d902SRodney W. Grimes 449b50d902SRodney W. Grimes #include <sys/types.h> 459b50d902SRodney W. Grimes #include <sys/time.h> 469b50d902SRodney W. Grimes #include <sys/resource.h> 479b50d902SRodney W. Grimes 489b50d902SRodney W. Grimes #include <ctype.h> 499b50d902SRodney W. Grimes #include <err.h> 509b50d902SRodney W. Grimes #include <errno.h> 519b50d902SRodney W. Grimes #include <stdio.h> 529b50d902SRodney W. Grimes #include <stdlib.h> 539b50d902SRodney W. Grimes #include <unistd.h> 549b50d902SRodney W. Grimes #include <string.h> 559b50d902SRodney W. Grimes 569b50d902SRodney W. Grimes #define DEFNICE 10 579b50d902SRodney W. Grimes 589b50d902SRodney W. Grimes void usage __P((void)); 599b50d902SRodney W. Grimes 609b50d902SRodney W. Grimes int 619b50d902SRodney W. Grimes main(argc, argv) 629b50d902SRodney W. Grimes int argc; 639b50d902SRodney W. Grimes char *argv[]; 649b50d902SRodney W. Grimes { 659b50d902SRodney W. Grimes int niceness = DEFNICE; 669b50d902SRodney W. Grimes 6754e66fcaSJoerg Wunsch if (argc < 2) 6854e66fcaSJoerg Wunsch errx(1, "usage: nice [-number] command [arguments]"); 699b50d902SRodney W. Grimes if (argv[1][0] == '-') 709b50d902SRodney W. Grimes if (argv[1][1] == '-' || isdigit(argv[1][1])) { 719b50d902SRodney W. Grimes niceness = atoi(argv[1] + 1); 729b50d902SRodney W. Grimes ++argv; 739b50d902SRodney W. Grimes } else 749b50d902SRodney W. Grimes errx(1, "illegal option -- %s", argv[1]); 759b50d902SRodney W. Grimes 769b50d902SRodney W. Grimes if (argv[1] == NULL) 779b50d902SRodney W. Grimes usage(); 789b50d902SRodney W. Grimes 799b50d902SRodney W. Grimes errno = 0; 809b50d902SRodney W. Grimes niceness += getpriority(PRIO_PROCESS, 0); 819b50d902SRodney W. Grimes if (errno) 829b50d902SRodney W. Grimes err(1, "getpriority"); 839b50d902SRodney W. Grimes if (setpriority(PRIO_PROCESS, 0, niceness)) 849b50d902SRodney W. Grimes err(1, "setpriority"); 859b50d902SRodney W. Grimes execvp(argv[1], &argv[1]); 869b50d902SRodney W. Grimes err(1, "%s", argv[1]); 879b50d902SRodney W. Grimes } 889b50d902SRodney W. Grimes 899b50d902SRodney W. Grimes void 909b50d902SRodney W. Grimes usage() 919b50d902SRodney W. Grimes { 929b50d902SRodney W. Grimes (void)fprintf(stderr, 939b50d902SRodney W. Grimes "nice [ -# ] command [ options ] [ operands ]\n"); 949b50d902SRodney W. Grimes exit(1); 959b50d902SRodney W. Grimes } 96