Annotation of src/usr.bin/nice/nice.c, Revision 1.13
1.13 ! tedu 1: /* $OpenBSD: nice.c,v 1.12 2013/11/20 20:52:12 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: #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:
1.6 millert 44: int main(int, char **);
45: static void usage(void);
1.1 deraadt 46:
47: int
1.9 deraadt 48: main(int argc, char *argv[])
1.1 deraadt 49: {
50: int niceness = DEFNICE;
51: int c;
52:
53: setlocale(LC_ALL, "");
54:
1.7 deraadt 55: /* handle obsolete -number syntax */
1.12 deraadt 56: if (argc > 1 && argv[1][0] == '-' && isdigit((unsigned char)argv[1][1])) {
1.7 deraadt 57: niceness = atoi(argv[1] + 1);
58: argc--;
59: argv++;
60: }
1.1 deraadt 61:
62: while ((c = getopt (argc, argv, "n:")) != -1) {
63: switch (c) {
64: case 'n':
1.7 deraadt 65: niceness = atoi(optarg);
1.1 deraadt 66: break;
67:
68: case '?':
69: default:
70: usage();
71: break;
72: }
73: }
1.13 ! tedu 74: argc -= optind;
! 75: argv += optind;
1.1 deraadt 76:
77: if (argc == 0)
78: usage();
79:
80: errno = 0;
81: niceness += getpriority(PRIO_PROCESS, 0);
82: if (errno) {
1.7 deraadt 83: err(1, "getpriority");
1.1 deraadt 84: /* NOTREACHED */
85: }
1.7 deraadt 86: if (setpriority(PRIO_PROCESS, 0, niceness))
87: warn("setpriority");
1.1 deraadt 88:
89: execvp(argv[0], &argv[0]);
1.7 deraadt 90: err((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
1.1 deraadt 91: /* NOTREACHED */
92: }
93:
94: static void
1.9 deraadt 95: usage(void)
1.1 deraadt 96: {
1.4 pvalchev 97: extern char *__progname;
1.10 sobrado 98: fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n",
1.4 pvalchev 99: __progname);
1.1 deraadt 100: exit(1);
101: }