1 /* $OpenBSD: nice.c,v 1.5 2001/09/16 22:40:10 pvalchev 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 char 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 static char rcsid[] = "$OpenBSD: nice.c,v 1.5 2001/09/16 22:40:10 pvalchev Exp $"; 48 #endif /* not lint */ 49 50 #include <sys/time.h> 51 #include <sys/resource.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <locale.h> 55 #include <ctype.h> 56 #include <errno.h> 57 #include <err.h> 58 #include <unistd.h> 59 60 #define DEFNICE 10 61 62 int main __P((int, char **)); 63 static void usage __P((void)); 64 65 int 66 main(argc, argv) 67 int argc; 68 char **argv; 69 { 70 int niceness = DEFNICE; 71 int c; 72 73 setlocale(LC_ALL, ""); 74 75 /* handle obsolete -number syntax */ 76 if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) { 77 niceness = atoi (argv[1] + 1); 78 argc--; argv++; 79 } 80 81 while ((c = getopt (argc, argv, "n:")) != -1) { 82 switch (c) { 83 case 'n': 84 niceness = atoi (optarg); 85 break; 86 87 case '?': 88 default: 89 usage(); 90 break; 91 } 92 } 93 argc -= optind; argv += optind; 94 95 if (argc == 0) 96 usage(); 97 98 errno = 0; 99 niceness += getpriority(PRIO_PROCESS, 0); 100 if (errno) { 101 err (1, "getpriority"); 102 /* NOTREACHED */ 103 } 104 if (setpriority(PRIO_PROCESS, 0, niceness)) { 105 warn ("setpriority"); 106 } 107 108 execvp(argv[0], &argv[0]); 109 err ((errno == ENOENT) ? 127 : 126, "%s", argv[0]); 110 /* NOTREACHED */ 111 } 112 113 static void 114 usage() 115 { 116 extern char *__progname; 117 fprintf(stderr, "usage: %s [ -n increment ] utility [ argument ...]\n", 118 __progname); 119 exit(1); 120 } 121