2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * James W. Williams of NASA Goddard Space Flight Center.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
38 static const char copyright[] =
39 "@(#) Copyright (c) 1991, 1993\n\
40 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95";
49 #include <sys/cdefs.h>
50 __FBSDID("$FreeBSD$");
52 #include <sys/types.h>
63 static void usage(void);
66 main(int argc, char **argv)
72 int (*cfncn)(int, uint32_t *, off_t *);
73 void (*pfncn)(char *, u_int32_t, off_t);
75 if ((p = rindex(argv[0], '/')) == NULL)
79 if (!strcmp(p, "sum")) {
87 while ((ch = getopt(argc, argv, "o:")) != -1)
90 if (!strcmp(optarg, "1")) {
93 } else if (!strcmp(optarg, "2")) {
96 } else if (!strcmp(optarg, "3")) {
100 warnx("illegal argument to -o option");
118 if ((fd = open(fn, O_RDONLY, 0)) < 0) {
124 if (cfncn(fd, &val, &len)) {
125 warn("%s", fn ? fn : "stdin");
137 (void)fprintf(stderr, "usage: cksum [-o 1 | 2 | 3] [file ...]\n");
138 (void)fprintf(stderr, " sum [file ...]\n");