2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
7 * redistribute them and/or modify them under the terms of the GNU
8 * Lesser General Public License as published by the Free Software
9 * Foundation; either version 2 of the License, or (at your option)
12 * These libraries and programs are distributed in the hope that
13 * they will be useful, but WITHOUT ANY WARRANTY; without even the
14 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with these libraries and programs; if not, write
20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /*%% (c) Copyright 1993, 1994 Hewlett-Packard Company */
24 /*%% (c) Copyright 1993, 1994 International Business Machines Corp. */
25 /*%% (c) Copyright 1993, 1994 Sun Microsystems, Inc. */
26 /*%% (c) Copyright 1993, 1994 Novell, Inc. */
27 /*%% $XConsortium: iswrrec.c /main/3 1995/10/23 11:46:30 rswiston $ */
29 static char sccsid[] = "@(#)iswrrec.c 1.7 89/06/07 Copyr 1988 Sun Micro";
32 * Copyright (c) 1988 by Sun Microsystems, Inc.
39 * Write a record to ISAM file.
42 #include "isam_impl.h"
45 static int _amwrrec();
48 * isfd = iswrrec(isfd, recnum, record)
50 * Iswrrec() writes a record to ISAM file at specified recno position.
51 * All indexes of the ISAM file are updated.
53 * Current record position is not changed.
54 * isrecnum is set to recnum.
56 * If the ISAM file is for variable length records, the isreclen variable
57 * must be set to indicate the actual length of the record, which must
58 * be between the minimum and maximum length, as specified in isbuild().
60 * Returns 0 if successful, or -1 of any error.
63 * EDUPL The write would result in a duplicate on a key that
64 * does not allow duplicates.
65 * ELOCKED The file has been locked by another process.
66 * ENOTOPEN isfd does not correspond to an open ISAM file, or the
67 * ISAM file was not opened with ISINOUT mode.
68 * EKEXISTS Record with recnum already exists.
69 * EBADARG recnum is negative.
73 iswrrec(int isfd, long recnum, char *record)
80 * Get File Access Block.
82 if ((fab = _isfd_find(isfd)) == NULL) {
83 _setiserrno2(ENOTOPEN, '9', '0');
88 * Check that the open mode was ISINOUT.
90 if (fab->openmode != OM_INOUT) {
91 _setiserrno2(ENOTOPEN, '9', '0');
96 * Determine record length. Check it against min and max record length.
98 reclen = (fab->varlength == TRUE) ? isreclen : fab->minreclen;
99 if (reclen < fab->minreclen || reclen > fab->maxreclen) {
100 _setiserrno2(EBADARG, '9' ,'0');
104 if ((ret = _amwrrec(&fab->isfhandle, record, reclen,
105 recnum, &fab->errcode)) == ISOK) {
106 isrecnum = recnum; /* Set isrecnum */
109 _seterr_errcode(&fab->errcode);
111 return (ret); /* Successful write */
115 * _amwrrec(isfhandle, record, reclen, recnum, errcode)
117 * _amwrrec() rewrites a record in ISAM file.
120 * isfhandle Handle of ISAM file
122 * reclen length of the record
123 * recnum record number of record to be deleted
126 * errcode error status of the operation
131 _amwrrec(Bytearray *isfhandle, char *record, int reclen, Recno recnum,
132 struct errcode *errcode)
141 * Get FCB corresponding to the isfhandle handle.
143 if ((fcb = _openfcb(isfhandle, errcode)) == NULL) {
148 rec_wrrec = (fcb->varflag?_vlrec_wrrec:_flrec_wrrec);
151 * Update information in FCB from CNTL page on the disk
153 (void)_isfcb_cntlpg_r2(fcb);
155 if ((err = rec_wrrec(fcb, record, recnum, reclen)) != ISOK) {
156 _amseterrcode(errcode, err);
163 if ((err = _addkeys(fcb, record, recnum)) != ISOK) {
164 _amseterrcode(errcode, err);
170 _amseterrcode(errcode, ISOK);
178 * Update CNTL Page from the FCB.
180 (void)_isfcb_cntlpg_w2(fcb);
191 * Restore FCB from CNTL page.
193 if (fcb) (void)_isfcb_cntlpg_r2(fcb);