Hello.
I don't have z/OS so I can't do this myself.
Would someone who has z/OS be able to raise an
issue either directly with IBM or via SHARE?
The problem is that IBM's ftp has a great option
to preserve RDW when transferring a binary VB
file from mainframe to PC, but it doesn't have
an option to reverse that process.
You can see the use of the "rdw" option below.
I have 2 utilities available to reverse that, but I
would much prefer that IBM's ftp code handled
this itself so that I didn't need to rely on
non-standard utilities.
Thanks. Paul.
/*********************************************************************/
/* */
/* This Program Written By Paul Edwards. */
/* Released to the public domain */
/* */
/*********************************************************************/
/*********************************************************************/
/* */
/* folks - read a VB (MVS) format file in binary mode, and process */
/* its contents. Note that the C standard allows binary files to */
/* be NUL-padded. This program allows for that. */
/* */
/* The intention of this program is to provide example PDPCLIB */
/* behaviour that should occur regardless of RECFM=F/V/U when */
/* opened in binary mode. */
/* */
/*********************************************************************/
/* Here is an example of transferring a VB file with
"Hello there"
"Folks"
in it to the PC, preserving the RDW (Record Descriptor Word)
*/
/*
binary
EZA1701I >>>TYPE i
200 Type is Image (Binary)
EZA1460I Command:
locsite rdw
EZA1460I Command:
put folks
EZA1701I >>>SITE VARrecfm Lrecl=256 Recfm=VB BLKSIZE=27998
500 Syntax error, Command not recognized.
>>> PC ignores SITE command. Use sendsite to suppress <<<
EZA1701I >>>STOR folks
150 Ready to receive "/C/folks". Mode STREAM Type BINARY.
226 Transfer finished successfully. Closing data connection.
EZA1617I 24 bytes transferred in 0.076 seconds. Transfer rate 0.32 Kbytes/sec.
EZA1460I Command:
quit
*/
/* Here is an EBCDIC hexdump of the transferred file on arrival at the PC */
/*
000000 000F0000 C8859393 9640A388 85998500 ....Hello there.
000010 090000C6 969392A2 ...Folks
*/
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv)
{
FILE *fp;
unsigned char lenb[4];
int len;
int c;
int x;
if (argc <= 1)
{
printf("usage: folks <fnm>\n");
return (EXIT_FAILURE);
}
fp = fopen(*(argv + 1), "rb");
if (fp == NULL)
{
printf("failed to open %s\n", *(argv + 1));
return (EXIT_FAILURE);
}
while (fread(lenb, sizeof lenb, 1, fp) == 1)
{
len = lenb[0] << 8 | lenb[1];
printf("len is %d\n", len);
if (lenb[2] != 0 || lenb[3] != 0)
{
printf("file is corrupt - reserved\n");
return (EXIT_FAILURE);
}
if (len == 0) /* allow for NUL-padding */
{
break;
}
if (len < 4)
{
printf("file is corrupt - length\n");
return (EXIT_FAILURE);
}
c = fgetc(fp);
printf("first data byte is %x\n", c);
for (x = 5; x < len; x++)
{
fgetc(fp);
}
}
return (EXIT_SUCCESS);
}
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