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