1 /* $OpenBSD: nice.c,v 1.14 2014/02/13 20:51:10 tedu 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/resource.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <locale.h> 37 #include <ctype.h> 38 #include <errno.h> 39 #include <err.h> 40 #include <unistd.h> 41 42 #define DEFNICE 10 43 44 int main(int, char **); 45 static void usage(void); 46 47 int 48 main(int argc, char *argv[]) 49 { 50 const char *errstr; 51 int prio = DEFNICE; 52 int c; 53 54 setlocale(LC_ALL, ""); 55 56 /* handle obsolete -number syntax */ 57 if (argc > 1 && argv[1][0] == '-' && 58 isdigit((unsigned char)argv[1][1])) { 59 prio = strtonum(argv[1] + 1, PRIO_MIN, PRIO_MAX, &errstr); 60 if (errstr) 61 errx(1, "increment is %s", errstr); 62 argc--; 63 argv++; 64 } 65 66 while ((c = getopt (argc, argv, "n:")) != -1) { 67 switch (c) { 68 case 'n': 69 prio = strtonum(optarg, PRIO_MIN, PRIO_MAX, &errstr); 70 if (errstr) 71 errx(1, "increment is %s", errstr); 72 break; 73 case '?': 74 default: 75 usage(); 76 break; 77 } 78 } 79 argc -= optind; 80 argv += optind; 81 82 if (argc == 0) 83 usage(); 84 85 errno = 0; 86 prio += getpriority(PRIO_PROCESS, 0); 87 if (errno) { 88 err(1, "getpriority"); 89 /* NOTREACHED */ 90 } 91 if (setpriority(PRIO_PROCESS, 0, prio)) 92 warn("setpriority"); 93 94 execvp(argv[0], &argv[0]); 95 err((errno == ENOENT) ? 127 : 126, "%s", argv[0]); 96 /* NOTREACHED */ 97 } 98 99 static void 100 usage(void) 101 { 102 extern char *__progname; 103 fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n", 104 __progname); 105 exit(1); 106 } 107