125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* James W. Williams of NASA Goddard Space Flight Center.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char copyright[] =
|
|
"@(#) Copyright (c) 1991, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)cksum.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/types.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "extern.h"
|
|
|
|
static void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
extern int optind;
|
|
u_long len, val;
|
|
register int ch, fd, rval;
|
|
char *fn;
|
|
int (*cfncn) __P((int, unsigned long *, unsigned long *));
|
|
void (*pfncn) __P((char *, unsigned long, unsigned long));
|
|
|
|
cfncn = crc;
|
|
pfncn = pcrc;
|
|
while ((ch = getopt(argc, argv, "o:")) != -1)
|
|
switch(ch) {
|
|
case 'o':
|
|
if (*optarg == '1') {
|
|
cfncn = csum1;
|
|
pfncn = psum1;
|
|
} else if (*optarg == '2') {
|
|
cfncn = csum2;
|
|
pfncn = psum2;
|
|
} else {
|
|
warnx("illegal argument to -o option");
|
|
usage();
|
|
}
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
fd = STDIN_FILENO;
|
|
fn = NULL;
|
|
rval = 0;
|
|
do {
|
|
if (*argv) {
|
|
fn = *argv++;
|
|
if ((fd = open(fn, O_RDONLY, 0)) < 0) {
|
|
warn("%s", fn);
|
|
rval = 1;
|
|
continue;
|
|
}
|
|
}
|
|
if (cfncn(fd, &val, &len)) {
|
|
warn("%s", fn ? fn : "stdin");
|
|
rval = 1;
|
|
} else
|
|
pfncn(fn, val, len);
|
|
(void)close(fd);
|
|
} while (*argv);
|
|
exit(rval);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: cksum [-o 1 | 2] [file ...]\n");
|
|
exit(1);
|
|
}
|