Remove __P macros from src/usr.bin and src/usr.sbin.
[dragonfly.git] / usr.bin / cksum / cksum.c
CommitLineData
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1/*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * James W. Williams of NASA Goddard Space Flight Center.
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.
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35 *
36 * @(#) Copyright (c) 1991, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)cksum.c 8.2 (Berkeley) 4/28/95
38 * $FreeBSD: src/usr.bin/cksum/cksum.c,v 1.11.2.1 2001/07/30 10:16:29 dd Exp $
2d8a3be7 39 * $DragonFly: src/usr.bin/cksum/cksum.c,v 1.4 2003/11/03 19:31:28 eirikn Exp $
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40 */
41
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42#include <sys/types.h>
43
44#include <err.h>
45#include <fcntl.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <string.h>
49#include <unistd.h>
50
51#include "extern.h"
52
16777b6b 53static void usage(void);
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54
55int
16777b6b 56main(int argc, char **argv)
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57{
58 register int ch, fd, rval;
59 u_int32_t len, val;
60 char *fn, *p;
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61 int (*cfncn)(int, u_int32_t *, u_int32_t *);
62 void (*pfncn)(char *, u_int32_t, u_int32_t);
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63
64 if ((p = rindex(argv[0], '/')) == NULL)
65 p = argv[0];
66 else
67 ++p;
68 if (!strcmp(p, "sum")) {
69 cfncn = csum1;
70 pfncn = psum1;
71 ++argv;
72 } else {
73 cfncn = crc;
74 pfncn = pcrc;
75
76 while ((ch = getopt(argc, argv, "o:")) != -1)
77 switch (ch) {
78 case 'o':
79 if (!strcmp(optarg, "1")) {
80 cfncn = csum1;
81 pfncn = psum1;
82 } else if (!strcmp(optarg, "2")) {
83 cfncn = csum2;
84 pfncn = psum2;
85 } else if (!strcmp(optarg, "3")) {
86 cfncn = crc32;
87 pfncn = pcrc;
88 } else {
89 warnx("illegal argument to -o option");
90 usage();
91 }
92 break;
93 case '?':
94 default:
95 usage();
96 }
97 argc -= optind;
98 argv += optind;
99 }
100
101 fd = STDIN_FILENO;
102 fn = NULL;
103 rval = 0;
104 do {
105 if (*argv) {
106 fn = *argv++;
107 if ((fd = open(fn, O_RDONLY, 0)) < 0) {
108 warn("%s", fn);
109 rval = 1;
110 continue;
111 }
112 }
113 if (cfncn(fd, &val, &len)) {
114 warn("%s", fn ? fn : "stdin");
115 rval = 1;
116 } else
117 pfncn(fn, val, len);
118 (void)close(fd);
119 } while (*argv);
120 exit(rval);
121}
122
123static void
16777b6b 124usage(void)
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125{
126 (void)fprintf(stderr, "usage: cksum [-o 1 | 2 | 3] [file ...]\n");
127 (void)fprintf(stderr, " sum [file ...]\n");
128 exit(1);
129}