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 * Copyright (c) 1988 by Sun Microsystems, Inc.
36 * Write a record to ISAM file.
39 #include "isam_impl.h"
42 static int _amwrrec();
45 * isfd = iswrrec(isfd, recnum, record)
47 * Iswrrec() writes a record to ISAM file at specified recno position.
48 * All indexes of the ISAM file are updated.
50 * Current record position is not changed.
51 * isrecnum is set to recnum.
53 * If the ISAM file is for variable length records, the isreclen variable
54 * must be set to indicate the actual length of the record, which must
55 * be between the minimum and maximum length, as specified in isbuild().
57 * Returns 0 if successful, or -1 of any error.
60 * EDUPL The write would result in a duplicate on a key that
61 * does not allow duplicates.
62 * ELOCKED The file has been locked by another process.
63 * ENOTOPEN isfd does not correspond to an open ISAM file, or the
64 * ISAM file was not opened with ISINOUT mode.
65 * EKEXISTS Record with recnum already exists.
66 * EBADARG recnum is negative.
70 iswrrec(int isfd, long recnum, char *record)
77 * Get File Access Block.
79 if ((fab = _isfd_find(isfd)) == NULL) {
80 _setiserrno2(ENOTOPEN, '9', '0');
85 * Check that the open mode was ISINOUT.
87 if (fab->openmode != OM_INOUT) {
88 _setiserrno2(ENOTOPEN, '9', '0');
93 * Determine record length. Check it against min and max record length.
95 reclen = (fab->varlength == TRUE) ? isreclen : fab->minreclen;
96 if (reclen < fab->minreclen || reclen > fab->maxreclen) {
97 _setiserrno2(EBADARG, '9' ,'0');
101 if ((ret = _amwrrec(&fab->isfhandle, record, reclen,
102 recnum, &fab->errcode)) == ISOK) {
103 isrecnum = recnum; /* Set isrecnum */
106 _seterr_errcode(&fab->errcode);
108 return (ret); /* Successful write */
112 * _amwrrec(isfhandle, record, reclen, recnum, errcode)
114 * _amwrrec() rewrites a record in ISAM file.
117 * isfhandle Handle of ISAM file
119 * reclen length of the record
120 * recnum record number of record to be deleted
123 * errcode error status of the operation
128 _amwrrec(Bytearray *isfhandle, char *record, int reclen, Recno recnum,
129 struct errcode *errcode)
138 * Get FCB corresponding to the isfhandle handle.
140 if ((fcb = _openfcb(isfhandle, errcode)) == NULL) {
145 rec_wrrec = (fcb->varflag?_vlrec_wrrec:_flrec_wrrec);
148 * Update information in FCB from CNTL page on the disk
150 (void)_isfcb_cntlpg_r2(fcb);
152 if ((err = rec_wrrec(fcb, record, recnum, reclen)) != ISOK) {
153 _amseterrcode(errcode, err);
160 if ((err = _addkeys(fcb, record, recnum)) != ISOK) {
161 _amseterrcode(errcode, err);
167 _amseterrcode(errcode, ISOK);
175 * Update CNTL Page from the FCB.
177 (void)_isfcb_cntlpg_w2(fcb);
188 * Restore FCB from CNTL page.
190 if (fcb) (void)_isfcb_cntlpg_r2(fcb);