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tapecopy.c
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tapecopy.c
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/*
tapecopy
This program uses a modified version of John Wilson's tapeio library to
copy tapes between any of the following:
local tape drives - pathname starting with /dev/
remote tape drives (rmt) - pathname containing a colon
Wilson-format tape image files - any other pathname
Copyright 1999, 2000 Eric Smith
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as published
by the Free Software Foundation. Note that permission is not granted
to redistribute this program under the terms of any other version of the
General Public License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include "tapeio.h"
#define MAX_REC_LEN 32768
char *progname;
char *buf;
void print_usage (FILE *f)
{
fprintf (f, "Usage: %s [-v] in out\n", progname);
}
void fatal (int retval, char *fmt, ...)
{
va_list ap;
if (fmt)
{
fprintf (stderr, "%s: ", progname);
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
}
if (retval == 1)
print_usage (stderr);
exit (retval);
}
int main (int argc, char *argv[])
{
int file = 0;
unsigned long filebytes = 0;
unsigned long tapebytes = 0;
int prevlen = -2;
int lencount = 0;
int firstrec = 0;
int len;
int verbose = 0;
char *srcfn = NULL;
char *destfn = NULL;
tape_handle_t src = NULL;
tape_handle_t dest = NULL;
progname = argv [0];
while (++argv, --argc)
{
if ((argv [0][0] == '-') && (argv [0][1] != '\0'))
{
if (argv [0][1] == 'v')
verbose++;
else
fatal (1, "unrecognized option '%s'\n", argv [0]);
}
else if (! srcfn)
srcfn = argv [0];
else if (! destfn)
destfn = argv [0];
else
fatal (1, NULL);
}
if (! srcfn)
fatal (1, NULL);
buf = malloc (MAX_REC_LEN);
if (! buf)
fatal (2, "can't allocate buffer\n");
src = opentape (srcfn, 0, 0);
if (! src)
fatal (3, "can't open source tape\n");
if (destfn)
{
dest = opentape (destfn, 1, 1);
if (! dest)
fatal (4, "can't open dest tape\n");
}
else
verbose++;
for (;;)
{
len = getrec (src, buf, MAX_REC_LEN);
if ((lencount != 0) && ((len == 0) || (len != prevlen)))
{
if (verbose)
{
if (lencount == 1)
printf ("1 record (%d)\n", firstrec);
else
printf ("%d records (%d..%d)\n", lencount, firstrec,
firstrec+lencount-1);
fflush (stdout);
}
filebytes += prevlen * lencount;
firstrec += lencount;
prevlen = -1;
lencount = 0;
}
if (len != 0)
{
if (lencount == 0)
{
if (verbose)
{
printf ("file %d record length %d: ", file, len);
fflush (stdout);
}
}
if (destfn)
putrec (dest, buf, len);
lencount++;
}
else
{
tapebytes += filebytes;
if (verbose)
{
if (prevlen == 0)
printf ("end of tape, %lu total bytes\n", tapebytes);
else
printf ("end of file %d, %lu bytes\n", file, filebytes);
fflush (stdout);
}
if (destfn)
tapemark (dest);
if (prevlen == 0)
break;
file++;
lencount = 0;
firstrec = 0;
filebytes = 0;
}
prevlen = len;
}
closetape (src);
if (destfn)
closetape (dest);
return (0);
}