199 lines
4.5 KiB
C
199 lines
4.5 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 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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/*%% (c) Copyright 1993, 1994 Hewlett-Packard Company */
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/*%% (c) Copyright 1993, 1994 International Business Machines Corp. */
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/*%% (c) Copyright 1993, 1994 Sun Microsystems, Inc. */
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/*%% (c) Copyright 1993, 1994 Novell, Inc. */
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/*%% $XConsortium: isamwrite.c /main/3 1995/10/23 11:35:14 rswiston $ */
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/*
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* Copyright (c) 1988 by Sun Microsystems, Inc.
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*/
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/*
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* isamwrite.c
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*
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* Description: _amwrite()
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* Write record to ISAM file.
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*
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*
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*/
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#include "isam_impl.h"
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static int _addkeys2 (Fcb *fcb, char *record, Recno recnum, Bytearray *curpos);
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extern long *ismaxlong;
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/*
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* _amwrite(isfhandle, record, reclen, curpos,
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* recnum, errcode)
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*
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* _amwrite() writes a new record to ISAM file.
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*
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* Input params:
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* isfhandle Handle of ISAM file
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* record record
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* reclen length of the record
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* curpos current record position
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*
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* Output params:
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* curpos new current position
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* recnum record number
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* errcode error status of the operation
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*
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*/
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int
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_amwrite(Bytearray *isfhandle, char *record, int reclen,
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Bytearray *curpos, Recno *recnum, struct errcode *errcode)
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{
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Fcb *fcb = NULL;
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Recno recnum2;
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Crp *crp;
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int err;
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int (*rec_write)(Fcb *, char *, Recno *, int);
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_isam_entryhook();
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/*
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* Get FCB corresponding to the isfhandle handle.
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*/
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if ((fcb = _openfcb(isfhandle, errcode)) == NULL) {
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_isam_exithook();
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return (ISERROR);
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}
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rec_write = (fcb->varflag?_vlrec_write:_flrec_write);
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/*
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* Update information in FCB from CNTL page on the disk
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*/
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(void)_isfcb_cntlpg_r2(fcb);
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if (rec_write(fcb, record, &recnum2, reclen) == ISERROR) {
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_isfatal_error("_amwrite() cannot write record");
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}
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/*
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* Update all keys.
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*/
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if ((err = _addkeys2(fcb, record, recnum2, curpos)) != ISOK) {
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_amseterrcode(errcode, err);
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goto ERROR;
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}
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fcb->nrecords++;
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*recnum = recnum2;
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_amseterrcode(errcode, ISOK);
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_issignals_mask();
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_isdisk_commit();
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_isdisk_sync();
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_isdisk_inval();
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/*
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* Return new current record position.
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*/
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crp = (Crp *) curpos->data;
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crp->flag = CRP_ON;
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crp->recno = recnum2;
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/*
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* Update CNTL Page from the FCB.
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*/
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(void)_isfcb_cntlpg_w2(fcb);
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_issignals_unmask();
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_isam_exithook();
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return (ISOK);
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ERROR:
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_isdisk_rollback();
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_isdisk_inval();
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/*
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* If error is not EDUPL position undefined.
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*/
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if (errcode->iserrno != EDUPL) {
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((Crp *)curpos->data)->flag = CRP_UNDEF;
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}
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/*
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* Restore FCB from CNTL page.
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*/
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if (fcb) (void)_isfcb_cntlpg_r2(fcb);
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_isam_exithook();
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return (ISERROR);
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}
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/*
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* _addkeys()
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*
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* Insert key entry to all indexes.
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*
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* Returns ISOK, or EDUPS.
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*/
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int _addkeys (Fcb *fcb, char *record, Recno recnum)
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{
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int nkeys = fcb->nkeys;
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int i;
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int err;
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for (i = 0; i < nkeys; i++) {
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if ((err = _add1key(fcb, fcb->keys + i, record, recnum,
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(char*)NULL)) != ISOK)
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return (err);
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}
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return (ISOK);
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}
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Static int
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_addkeys2 (Fcb *fcb, char *record, Recno recnum, Bytearray *curpos)
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{
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int nkeys = fcb->nkeys;
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int i;
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int err;
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Crp *crp;
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int keyid;
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Keydesc2 *keydesc2;
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crp = (Crp *)curpos->data;
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keyid = crp->keyid;
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for (i = 0; i < nkeys; i++) {
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keydesc2 = fcb->keys + i;
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if ((err =_add1key(fcb, keydesc2, record, recnum,
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(keydesc2->k2_keyid == keyid) ?
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crp->key : (char *) NULL)) != ISOK)
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return (err);
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}
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return (ISOK);
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}
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