98 lines
2.4 KiB
C
98 lines
2.4 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_stdio.h"
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#include "io_params.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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#include "movtc.h"
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LITREF unsigned char LIB_AB_EBC_ASC[];
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int iomt_readblk (io_desc *dv)
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{
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int4 status;
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unsigned short ct;
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iosb io_status_blk;
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d_mt_struct *mt_ptr;
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error_def (ERR_IOEOF);
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error_def (ERR_MTRDBADBLK);
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mt_ptr = (d_mt_struct *) dv->dev_sp;
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#ifdef DP
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FPRINTF(stderr, ">> iomt_read_blk\n");
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#endif
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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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if (status != SS_NORMAL)
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{
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return (status);
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}
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}
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#endif
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status = iomt_rdlblk (mt_ptr, mt_ptr->read_mask,
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&io_status_blk, mt_ptr->buffer,
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mt_ptr->block_sz);
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if (status != SS_NORMAL)
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rts_error (VARLSTCNT (1) status);
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switch (io_status_blk.status)
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{
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case SS_NORMAL:
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/******************
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* This test is nooped ... if not, it would raise an error when the input block size did not
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* match the declared block size.
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* if (io_status_blk.char_ct != mt_ptr->block_sz)
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* rts_error(VARLSTCNT(4) ERR_MTRDBADBLK,2,io_status_blk.char_ct, mt_ptr->block_sz);
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******************/
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mt_ptr->bufftop = mt_ptr->buffer + io_status_blk.char_ct;
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dv->dollar.za = 0;
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break;
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case SS_ENDOFFILE:
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if (mt_ptr->labeled == MTLAB_ANSI && !dv->dollar.zeof)
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iomt_rdansiend (dv);
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dv->dollar.zeof = TRUE;
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dv->dollar.za = 0;
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if (dv->error_handler.len > 0)
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rts_error (VARLSTCNT (1) ERR_IOEOF);
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return FALSE;
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case SS_ENDOFTAPE:
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dv->dollar.za = 1;
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rts_error (VARLSTCNT (1) io_status_blk.status);
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default:
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dv->dollar.za = 9;
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rts_error (VARLSTCNT (1) io_status_blk.status);
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}
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if (dv->dollar.zeof)
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{
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dv->dollar.zeof = FALSE;
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dv->dollar.x = 0;
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dv->dollar.y = 0;
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}
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if (mt_ptr->ebcdic)
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movtc (mt_ptr->block_sz, mt_ptr->buffer, LIB_AB_EBC_ASC, mt_ptr->buffer);
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if (!dv->dollar.za)
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mt_ptr->buffptr = mt_ptr->buffer;
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#ifdef DP
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FPRINTF(stderr, "<< iomt_readblk\n");
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#endif
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return TRUE;
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}
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