1 /* $OpenBSD: nice.c,v 1.10 2009/06/17 09:51:51 sobrado 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 #ifndef lint 34 char copyright[] = 35 "@(#) Copyright (c) 1989 The Regents of the University of California.\n\ 36 All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)nice.c 5.4 (Berkeley) 6/1/90"; 42 #endif 43 static char rcsid[] = "$OpenBSD: nice.c,v 1.10 2009/06/17 09:51:51 sobrado Exp $"; 44 #endif /* not lint */ 45 46 #include <sys/time.h> 47 #include <sys/resource.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <locale.h> 51 #include <ctype.h> 52 #include <errno.h> 53 #include <err.h> 54 #include <unistd.h> 55 56 #define DEFNICE 10 57 58 int main(int, char **); 59 static void usage(void); 60 61 int 62 main(int argc, char *argv[]) 63 { 64 int niceness = DEFNICE; 65 int c; 66 67 setlocale(LC_ALL, ""); 68 69 /* handle obsolete -number syntax */ 70 if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) { 71 niceness = atoi(argv[1] + 1); 72 argc--; 73 argv++; 74 } 75 76 while ((c = getopt (argc, argv, "n:")) != -1) { 77 switch (c) { 78 case 'n': 79 niceness = atoi(optarg); 80 break; 81 82 case '?': 83 default: 84 usage(); 85 break; 86 } 87 } 88 argc -= optind; argv += optind; 89 90 if (argc == 0) 91 usage(); 92 93 errno = 0; 94 niceness += getpriority(PRIO_PROCESS, 0); 95 if (errno) { 96 err(1, "getpriority"); 97 /* NOTREACHED */ 98 } 99 if (setpriority(PRIO_PROCESS, 0, niceness)) 100 warn("setpriority"); 101 102 execvp(argv[0], &argv[0]); 103 err((errno == ENOENT) ? 127 : 126, "%s", argv[0]); 104 /* NOTREACHED */ 105 } 106 107 static void 108 usage(void) 109 { 110 extern char *__progname; 111 fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n", 112 __progname); 113 exit(1); 114 } 115