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74 lines
2.7 KiB
74 lines
2.7 KiB
/*
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$Log: S:\gfs32\include\dbt.h_v $
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*
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* Rev 1.0 06 Apr 1995 14:02:10 HEIDI
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* Initial entry
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*
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* Rev 1.0 28 Mar 1995 16:08:28 JAR
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* Initial entry
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*/
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/*
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Copyright 1989 by Wang Laboratories Inc.
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Permission to use, copy, modify, and distribute this
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software and its documentation for any purpose and without
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fee is hereby granted, provided that the above copyright
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notice appear in all copies and that both that copyright
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notice and this permission notice appear in supporting
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documentation, and that the name of WANG not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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WANG makes no representations about the suitability of
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this software for any purpose. It is provided "as is"
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without express or implied warranty.
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*/
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/*
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* SccsId: @(#)Header dbt.h 1.15@(#)
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*
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* (c) Copyright Wang Laboratories, Inc. 1989
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* All Rights Reserved
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*
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* GFS: WIIF Data Block Table Structure
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*
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*/
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#ifndef DBT_H
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#define DBT_H
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#include "dbcb.h"
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typedef struct _dbt /* WIFF DBT Structure */
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{
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unsigned short first_free; /* First Free Entry */
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unsigned short entries; /* Number of Entries in Block */
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#define HDR_CNT 84 /* ... Header can hold 84 entries */
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/* 3-AUG-92 JAR */
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#define DBT_CNT 168 /* ... used to be 170, but now 168
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the reason being that the
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allocation scheme used in
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wfwrite will not properly
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get more dbt's when this
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is 170, and a UAE results
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in windows. This was never
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found before because the WIF
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file must be > 2M in size
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for this limit to be reached.
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*/
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union { /* Block#/pointer to previous DBT */
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unsigned long prv_blk;
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struct _dbt FAR *prev_dbt;
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} pu;
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union { /* Block#/pointer to next DBT */
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unsigned long nxt_blk;
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struct _dbt FAR *next_dbt;
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} nu;
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unsigned short start_line; /* Starting line # of next DBT */
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unsigned short reserve; /* Reserved */
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unsigned long first_dbcb; /* DBCB's start here */
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} DBT, *p_DBT;
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#endif /* inclusion conditional */
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