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git://git.code.sf.net/p/cdesktopenv/code
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a1cbcd24db
Most of these are related to missing includes and prototypes as well as parens/braces. A few are also potential 64bit issues.
199 lines
6.5 KiB
C
199 lines
6.5 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 librararies 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: discon.c /main/2 1996/05/09 04:04:43 drk $ */
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/*
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* COMPONENT_NAME: austext
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*
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* FUNCTIONS: d_discon
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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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discon.c -- db_VISTA set dicconnection module
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(C) Copyright 1985, 1986, 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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/* set pointer structure definition */
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typedef struct {
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LONG total; /* total number of members in set */
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DB_ADDR first; /* database address of first member in set */
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DB_ADDR last; /* database address of last member in set */
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#ifndef NO_TIMESTAMP
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ULONG timestamp; /* set update timestamp - if used */
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#endif
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} SET_PTR;
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/* member pointer structure definition */
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typedef struct {
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DB_ADDR owner; /* database address of owner record */
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DB_ADDR prev; /* database address of previous member in set */
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DB_ADDR next; /* database address of next member in set */
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} MEM_PTR;
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/* Disconnect the current member of set
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*/
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int
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d_discon(nset TASK_PARM DBN_PARM)
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int nset; /* set number */
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TASK_DECL
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DBN_DECL /* database number */
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{
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SET_PTR cosp; /* current owner's set pointer */
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MEM_PTR cmmp; /* member's member pointer */
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MEM_PTR npmp; /* next or previous member's member pointer */
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char FAR *orec; /* ptr to current owner record contents in cache */
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char FAR *mrec = NULL; /* ptr to member record contents in cache */
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char FAR *nprec = NULL; /* ptr to next or prev record contents in cache */
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DB_ADDR mdba; /* db address of member record */
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DB_ADDR npdba; /* db address of next or previous member */
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int set; /* set_table entry */
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int stat; /* status code variable */
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#ifndef NO_TIMESTAMP
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FILE_NO file; /* file containing owner record */
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#endif
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SET_ENTRY FAR *set_ptr;
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DB_ADDR FAR *co_ptr, FAR *cm_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 FAR * FAR *)&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 ( !*(co_ptr = &curr_own[set]) )
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RETURN( dberr(S_NOCO) );
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/* make sure we have a current member */
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if ( !*(cm_ptr = &curr_mem[set]) )
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RETURN( dberr(S_NOCM) );
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/* read member record */
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mdba = *cm_ptr;
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if ( dio_read(mdba, (char FAR * FAR *)&mrec, PGHOLD) != S_OKAY )
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RETURN( db_status );
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/* ensure record is connected */
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if ( (stat = r_gmem(set, mrec, (char FAR *)&cmmp)) != S_OKAY )
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goto quit_b;
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if ( cmmp.owner == NULL_DBA ) { /* checks owner pointer */
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stat = S_NOTCON;
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goto quit_b;
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}
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/* read owner record */
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if ( (stat = dio_read(*co_ptr, (char FAR * FAR *)&orec, PGHOLD)) != S_OKAY )
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goto quit_b;
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/* get set pointer from owner */
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if ( r_gset(set, orec, (char FAR *)&cosp) != S_OKAY )
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goto quit_a;
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if ( cmmp.next == NULL_DBA )
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/* last record in set */
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cosp.last = cmmp.prev;
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else {
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/* set next record's prev to current member's prev */
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npdba = cmmp.next;
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if ((dio_read(npdba, (char FAR * FAR *)&nprec, NOPGHOLD) != S_OKAY) ||
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(r_gmem(set, nprec, (char FAR *)&npmp) != S_OKAY))
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goto quit_a;
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npmp.prev = cmmp.prev;
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if ((r_pmem(set, nprec, (char FAR *)&npmp) != S_OKAY) ||
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(dio_write(npdba, NULL, NOPGFREE) != S_OKAY))
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goto quit_a;
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}
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if ( cmmp.prev == NULL_DBA )
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/* first record in set */
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cosp.first = cmmp.next;
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else {
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/* set previous record's next to current member's next */
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npdba = cmmp.prev;
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if ((dio_read(npdba, (char FAR * FAR *)&nprec, NOPGHOLD) != S_OKAY) ||
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(r_gmem(set, nprec, (char FAR *)&npmp) != S_OKAY))
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goto quit_a;
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npmp.next = cmmp.next;
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if ((r_pmem(set, nprec, (char FAR *)&npmp) != S_OKAY) ||
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(dio_write(npdba, NULL, NOPGFREE) != S_OKAY))
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goto quit_a;
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}
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#ifndef NO_TIMESTAMP
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/* check for timestamp */
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if ( set_ptr->st_flags & TIMESTAMPED ) {
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file = NUM2INT((FILE_NO)((*co_ptr >> FILESHIFT) & FILEMASK), ft_offset);
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cosp.timestamp = dio_pzgetts(file);
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}
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#endif
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/* update membership count */
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--cosp.total;
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/* update owner record's set pointer */
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if ((r_pset(set, orec, (char FAR *)&cosp) != S_OKAY) ||
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(dio_write(*co_ptr, NULL, PGFREE) != S_OKAY))
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RETURN( db_status );
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/* update current record and current member */
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curr_rec = mdba;
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*cm_ptr = cmmp.next;
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/* make member record's member pointer null */
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cmmp.owner = cmmp.prev = cmmp.next = NULL_DBA;
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/* update member record */
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if ((r_pmem(set, mrec, (char FAR *)&cmmp) != S_OKAY) ||
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(dio_write(mdba, NULL, PGFREE) != S_OKAY))
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RETURN( db_status );
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#ifndef NO_TIMESTAMP
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/* note timestamps */
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if ( db_tsrecs )
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d_utscr( &cr_time TASK_PARM );
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if ( db_tsrecs && *cm_ptr )
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d_utscm(nset, &cm_time[set] TASK_PARM DBN_PARM);
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/* check for timestamp */
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if ( set_ptr->st_flags & TIMESTAMPED )
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cs_time[set] = cosp.timestamp;
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#endif
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RETURN( db_status = *cm_ptr ? S_OKAY : S_EOS );
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quit_a:
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stat = db_status;
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dio_write(mdba, NULL, PGFREE);
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quit_b:
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dio_write(*co_ptr, NULL, PGFREE);
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RETURN( db_status = stat );
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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 discon.c */
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