93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: findpm.c /main/2 1996/05/09 04:06:57 drk $ */
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/*
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* COMPONENT_NAME: austext
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*
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* FUNCTIONS: d_findpm
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*
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* ORIGINS: 157
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*
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* OBJECT CODE ONLY SOURCE MATERIALS
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*/
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/*-----------------------------------------------------------------------
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findpm.c -- db_VISTA find previous member module
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(C) Copyright 1987 by Raima Corp.
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-----------------------------------------------------------------------*/
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/* ********************** EDIT HISTORY *******************************
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SCR DATE INI DESCRIPTION
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----- --------- --- -----------------------------------------------------
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04-Aug-88 RTK MULTI_TASK changes
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*/
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#include <stdio.h>
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#include "vista.h"
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#include "dbtype.h"
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/* Find previous member of set
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*/
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int
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d_findpm(int nset, int dbn)
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{
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int set;
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char memp[MEMPSIZE];
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DB_ADDR mem;
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char *recp;
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DB_ADDR *cm_ptr;
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SET_ENTRY *set_ptr;
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DB_ENTER(DB_ID TASK_ID LOCK_SET(SET_IO));
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if (nset_check(nset, &set, (SET_ENTRY * *)&set_ptr) != S_OKAY)
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RETURN( db_status );
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/* make sure we have a current owner */
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if ( ! curr_own[set] )
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RETURN( dberr(S_NOCO) );
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/* find last member if no current member */
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if ( !*(cm_ptr = &curr_mem[set]) )
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RETURN( d_findlm(nset , dbn) );
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/* read current member of set and get member pointer from record */
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if ((dio_read(*cm_ptr, (char * *)&recp, NOPGHOLD) != S_OKAY) ||
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(r_gmem(set, recp, memp) != S_OKAY))
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RETURN( db_status );
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/* extract address of previous member */
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bytecpy( &mem, memp+MP_PREV, DB_ADDR_SIZE);
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/* set current record and member */
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*cm_ptr = mem;
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if ( ! mem ) /* end of set */
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RETURN( db_status = S_EOS );
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curr_rec = mem;
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RETURN( db_status = S_OKAY );
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}
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/* vpp -nOS2 -dUNIX -nBSD -nVANILLA_BSD -nVMS -nMEMLOCK -nWINDOWS -nFAR_ALLOC -f/usr/users/master/config/nonwin findpm.c */
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