1 /* $NetBSD: nice.c,v 1.10 1997/10/19 06:28:04 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1989 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT( 39 "@(#) Copyright (c) 1989 The Regents of the University of California.\n\ 40 All rights reserved.\n"); 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)nice.c 5.4 (Berkeley) 6/1/90"; 46 #endif 47 __RCSID("$NetBSD: nice.c,v 1.10 1997/10/19 06:28:04 lukem Exp $"); 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 #include <sys/time.h> 52 #include <sys/resource.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <locale.h> 57 #include <ctype.h> 58 #include <errno.h> 59 #include <err.h> 60 #include <unistd.h> 61 62 #define DEFNICE 10 63 64 int main __P((int, char **)); 65 static void usage __P((void)); 66 67 int 68 main(argc, argv) 69 int argc; 70 char **argv; 71 { 72 int niceness = DEFNICE; 73 int c; 74 75 setlocale(LC_ALL, ""); 76 77 /* handle obsolete -number syntax */ 78 if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) { 79 niceness = atoi (argv[1] + 1); 80 argc--; argv++; 81 } 82 83 while ((c = getopt (argc, argv, "n:")) != -1) { 84 switch (c) { 85 case 'n': 86 niceness = atoi (optarg); 87 break; 88 89 case '?': 90 default: 91 usage(); 92 break; 93 } 94 } 95 argc -= optind; argv += optind; 96 97 if (argc == 0) 98 usage(); 99 100 errno = 0; 101 niceness += getpriority(PRIO_PROCESS, 0); 102 if (errno) { 103 err (1, "getpriority"); 104 /* NOTREACHED */ 105 } 106 if (setpriority(PRIO_PROCESS, 0, niceness)) { 107 warn ("setpriority"); 108 } 109 110 execvp(argv[0], &argv[0]); 111 err ((errno == ENOENT) ? 127 : 126, "%s", argv[0]); 112 /* NOTREACHED */ 113 } 114 115 static void 116 usage() 117 { 118 (void)fprintf(stderr, 119 "usage: nice [ -n increment ] utility [ argument ...]\n"); 120 121 exit(1); 122 } 123