61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/****************************************************************
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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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/* iomt_rdlblk.c UNIX (low-level) read a block of data from mag tape. */
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#include "mdef.h"
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#include "gtm_stdio.h"
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#include "gtm_unistd.h"
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#include <errno.h>
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#include "io.h"
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#include "iottdef.h"
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#include "iosp.h"
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#include "iomtdef.h"
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#include "gtmio.h"
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uint4 iomt_rdlblk (d_mt_struct *mt_ptr,
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uint4 mask,
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iosb *stat_blk,
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void *buff,
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int size)
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{
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int4 status;
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DOREADRL(mt_ptr->access_id, buff, size, status);
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stat_blk->char_ct = status;
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#ifdef DP
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FPRINTF(stderr, "-> Reading - size: %d status: %d\n", size, status);
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#endif
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if (status < 0)
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{
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#ifdef DP
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PERROR("iomt_rdlblk");
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#endif
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status = errno;
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stat_blk->status = MT_TAPERROR;
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} else if (status == 0)
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{
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status = SS_NORMAL;
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stat_blk->status = SS_ENDOFFILE;
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mt_ptr->filepos += 1;
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}
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/* DCK or end of tape */
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else if (status > 0)
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{
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stat_blk->status = SS_NORMAL;
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mt_ptr->recpos += 1;
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status = SS_NORMAL;
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}
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return status;
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}
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