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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/cksum/cksum.c | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/cksum/cksum.c')
-rw-r--r-- | usr.bin/cksum/cksum.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/usr.bin/cksum/cksum.c b/usr.bin/cksum/cksum.c new file mode 100644 index 0000000..3e66ca5 --- /dev/null +++ b/usr.bin/cksum/cksum.c @@ -0,0 +1,124 @@ +/*- + * 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. + */ + +#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 <fcntl.h> +#include <unistd.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include "extern.h" + +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:")) != EOF) + switch(ch) { + case 'o': + if (*optarg == '1') { + cfncn = csum1; + pfncn = psum1; + } else if (*optarg == '2') { + cfncn = csum2; + pfncn = psum2; + } else { + (void)fprintf(stderr, + "cksum: illegal argument to -o option\n"); + 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) { + (void)fprintf(stderr, "cksum: %s: %s\n", + fn, strerror(errno)); + rval = 1; + continue; + } + } + if (cfncn(fd, &val, &len)) { + (void)fprintf(stderr, "cksum: %s: %s\n", + fn ? fn : "stdin", strerror(errno)); + rval = 1; + } else + pfncn(fn, val, len); + (void)close(fd); + } while (*argv); + exit(rval); +} + +void +usage() +{ + (void)fprintf(stderr, "usage: cksum [-o 1 | 2] [file ...]\n"); + exit(1); +} |