1 /* $OpenBSD: nice.c,v 1.11 2009/10/27 23:59:41 deraadt Exp $ */ 2 /* $NetBSD: nice.c,v 1.9 1995/08/31 23:30:58 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1989 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/time.h> 34 #include <sys/resource.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <locale.h> 38 #include <ctype.h> 39 #include <errno.h> 40 #include <err.h> 41 #include <unistd.h> 42 43 #define DEFNICE 10 44 45 int main(int, char **); 46 static void usage(void); 47 48 int 49 main(int argc, char *argv[]) 50 { 51 int niceness = DEFNICE; 52 int c; 53 54 setlocale(LC_ALL, ""); 55 56 /* handle obsolete -number syntax */ 57 if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) { 58 niceness = atoi(argv[1] + 1); 59 argc--; 60 argv++; 61 } 62 63 while ((c = getopt (argc, argv, "n:")) != -1) { 64 switch (c) { 65 case 'n': 66 niceness = atoi(optarg); 67 break; 68 69 case '?': 70 default: 71 usage(); 72 break; 73 } 74 } 75 argc -= optind; argv += optind; 76 77 if (argc == 0) 78 usage(); 79 80 errno = 0; 81 niceness += getpriority(PRIO_PROCESS, 0); 82 if (errno) { 83 err(1, "getpriority"); 84 /* NOTREACHED */ 85 } 86 if (setpriority(PRIO_PROCESS, 0, niceness)) 87 warn("setpriority"); 88 89 execvp(argv[0], &argv[0]); 90 err((errno == ENOENT) ? 127 : 126, "%s", argv[0]); 91 /* NOTREACHED */ 92 } 93 94 static void 95 usage(void) 96 { 97 extern char *__progname; 98 fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n", 99 __progname); 100 exit(1); 101 } 102