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Merge from Lite2 (make the command sum' an alias for cksum -o 1', and

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reject -o args other than "1" or "2").
This commit is contained in:
Bruce Evans 1997-07-06 03:03:10 +00:00
parent 2244ea07dc
commit 2cbd69330d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=27222
2 changed files with 37 additions and 14 deletions
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20
usr.bin/cksum/cksum.1
View File

@ -32,8 +32,8 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)cksum.1 8.2 (Berkeley) 4/28/95
.\" $Id: cksum.1,v 1.3 1997/04/29 08:41:26 jmg Exp $
.\" @(#)cksum.1 8.2 (Berkeley) 4/28/95
.\" $Id: cksum.1,v 1.4 1997/06/25 07:02:00 charnier Exp $
.\"
.Dd April 28, 1995
.Dt CKSUM 1
@ -45,6 +45,8 @@
.Nm cksum
.Op Fl o Ar \&1 No \&| Ar \&2
.Op Ar file ...
.Nm sum
.Op Ar file ...
.Sh DESCRIPTION
The
.Nm cksum
@ -56,6 +58,14 @@ the total number of octets in the file and the file name.
If no file name is specified, the standard input is used and no file name
is written.
.Pp
The
.Nm sum
utility is identical to the
.Nm cksum
utility, except that it defaults to using historic algorithm 1, as
described below.
It is provided for compatibility only.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl o
@ -141,8 +151,10 @@ The bit sequence is complemented and the result is the CRC.
.Ed
.Pp
The
.Nm
utility exits 0 on success, and >0 if an error occurs.
.Nm cksum
and
.Nm sum
utilities exit 0 on success, and >0 if an error occurs.
.Sh SEE ALSO
.Xr md5 1
.Rs

31
usr.bin/cksum/cksum.c
View File

@ -33,7 +33,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
* $Id: cksum.c,v 1.3 1997/06/25 07:02:03 charnier Exp $
*/
#ifndef lint
@ -43,11 +43,12 @@ static char copyright[] =
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)cksum.c 8.1 (Berkeley) 6/6/93";
static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95";
#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
@ -55,6 +56,7 @@ static char sccsid[] = "@(#)cksum.c 8.1 (Berkeley) 6/6/93";
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
static void usage __P((void));
@ -64,22 +66,31 @@ main(argc, argv)
int argc;
char **argv;
{
extern int optind;
u_long len, val;
register int ch, fd, rval;
char *fn;
u_long len, val;
char *fn, *p;
int (*cfncn) __P((int, unsigned long *, unsigned long *));
void (*pfncn) __P((char *, unsigned long, unsigned long));
cfncn = crc;
pfncn = pcrc;
if ((p = rindex(argv[0], '/')) == NULL)
p = argv[0];
else
++p;
if (*p == 'c') {
cfncn = crc;
pfncn = pcrc;
} else {
cfncn = csum1;
pfncn = psum1;
}
while ((ch = getopt(argc, argv, "o:")) != -1)
switch(ch) {
switch (ch) {
case 'o':
if (*optarg == '1') {
if (!strcmp(optarg, "1")) {
cfncn = csum1;
pfncn = psum1;
} else if (*optarg == '2') {
} else if (!strcmp(optarg, "2")) {
cfncn = csum2;
pfncn = psum2;
} else {