Annotation of src/usr.bin/nice/nice.c, Revision 1.10
1.10 ! sobrado 1: /* $OpenBSD: nice.c,v 1.9 2003/06/10 22:20:49 deraadt Exp $ */
1.1 deraadt 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.
1.8 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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
1.10 ! sobrado 43: static char rcsid[] = "$OpenBSD: nice.c,v 1.9 2003/06/10 22:20:49 deraadt Exp $";
1.1 deraadt 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:
1.6 millert 58: int main(int, char **);
59: static void usage(void);
1.1 deraadt 60:
61: int
1.9 deraadt 62: main(int argc, char *argv[])
1.1 deraadt 63: {
64: int niceness = DEFNICE;
65: int c;
66:
67: setlocale(LC_ALL, "");
68:
1.7 deraadt 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: }
1.1 deraadt 75:
76: while ((c = getopt (argc, argv, "n:")) != -1) {
77: switch (c) {
78: case 'n':
1.7 deraadt 79: niceness = atoi(optarg);
1.1 deraadt 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) {
1.7 deraadt 96: err(1, "getpriority");
1.1 deraadt 97: /* NOTREACHED */
98: }
1.7 deraadt 99: if (setpriority(PRIO_PROCESS, 0, niceness))
100: warn("setpriority");
1.1 deraadt 101:
102: execvp(argv[0], &argv[0]);
1.7 deraadt 103: err((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
1.1 deraadt 104: /* NOTREACHED */
105: }
106:
107: static void
1.9 deraadt 108: usage(void)
1.1 deraadt 109: {
1.4 pvalchev 110: extern char *__progname;
1.10 ! sobrado 111: fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n",
1.4 pvalchev 112: __progname);
1.1 deraadt 113: exit(1);
114: }