fis-gtm/sr_port/iomt_rddoslab.c

67 lines
1.8 KiB
C

/****************************************************************
* *
* Copyright 2001 Sanchez Computer Associates, Inc. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_string.h"
#include "gtm_stdio.h"
#include "io.h"
#include "iosp.h"
#include "iottdef.h"
#include "iomtdef.h"
void
iomt_rddoslab (io_desc *dv)
{
static readonly unsigned char label[] = {149, 84, 248, 102, 79, 192, 1, 1, 155, 0, 0, 0, 0, 0};
uint4 status, status1;
iosb io_status_blk;
d_mt_struct *mt_ptr;
error_def (ERR_MTIS);
error_def (ERR_MTDOSLAB);
int inlen;
unsigned char *incp;
inlen = sizeof (label);
mt_ptr = (d_mt_struct *) dv->dev_sp;
incp = (unsigned char *) malloc (mt_ptr->block_sz);
io_status_blk.status = 0;
#ifdef UNIX
if (mt_ptr->mode != MT_M_READ)
{
status = iomt_reopen (dv, MT_M_READ, FALSE);
}
#endif
status = iomt_rdlblk (mt_ptr, IO_READLBLK, &io_status_blk,
incp, mt_ptr->block_sz);
if (status != SS_NORMAL || (status1 = io_status_blk.status) != SS_NORMAL)
{
if (status1 == SS_ENDOFTAPE)
dv->dollar.za = 1;
else
dv->dollar.za = 9;
free (incp);
rts_error (VARLSTCNT (4) ERR_MTIS, 2, dv->trans_name->len, dv->trans_name->dollar_io);
} else
dv->dollar.za = 0;
if (io_status_blk.char_ct != sizeof (label) || memcmp (incp, label, sizeof (label)))
{
dv->dollar.za = 9;
free (incp);
rts_error (VARLSTCNT (6) ERR_MTDOSLAB, 0, ERR_MTIS, 2, dv->trans_name->len, dv->trans_name->dollar_io);
}
free (incp);
return;
}