1 /* $OpenBSD: nice.c,v 1.9 2003/06/10 22:20:49 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/cdefs.h>
34 __COPYRIGHT("@(#) Copyright (c) 1989 The Regents of the University of California.\n\
35 All rights reserved.\n");
36 __SCCSID("@(#)nice.c 5.4 (Berkeley) 6/1/90");
37 __RCSID("$MirOS: src/usr.bin/nice/nice.c,v 1.2 2007/07/05 23:09:42 tg Exp $");
38
39 #include <sys/time.h>
40 #include <sys/resource.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <locale.h>
44 #include <ctype.h>
45 #include <errno.h>
46 #include <err.h>
47 #include <unistd.h>
48
49 #define DEFNICE 10
50
51 int main(int, char **);
52 static void usage(void);
53
54 int
main(int argc,char * argv[])55 main(int argc, char *argv[])
56 {
57 int niceness = DEFNICE;
58 int c;
59
60 #ifndef __MirBSD__
61 setlocale(LC_ALL, "");
62 #endif
63
64 /* handle obsolete -number syntax */
65 if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) {
66 niceness = atoi(argv[1] + 1);
67 argc--;
68 argv++;
69 }
70
71 while ((c = getopt (argc, argv, "n:")) != -1) {
72 switch (c) {
73 case 'n':
74 niceness = atoi(optarg);
75 break;
76
77 case '?':
78 default:
79 usage();
80 break;
81 }
82 }
83 argc -= optind; argv += optind;
84
85 if (argc == 0)
86 usage();
87
88 errno = 0;
89 niceness += getpriority(PRIO_PROCESS, 0);
90 if (errno) {
91 err(1, "getpriority");
92 /* NOTREACHED */
93 }
94 if (setpriority(PRIO_PROCESS, 0, niceness))
95 warn("setpriority");
96
97 execvp(argv[0], &argv[0]);
98 err((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
99 /* NOTREACHED */
100 }
101
102 static void
usage(void)103 usage(void)
104 {
105 extern char *__progname;
106 fprintf(stderr, "usage: %s [ -n increment ] utility [ argument ...]\n",
107 __progname);
108 exit(1);
109 }
110