241 lines
7.2 KiB
C
241 lines
7.2 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: makenew.c /main/2 1996/05/09 04:11:43 drk $ */
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/*
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* COMPONENT_NAME: austext
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*
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* FUNCTIONS: d_makenew
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* d_setkey
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* sk_free
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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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makenew.c -- db_VISTA (empty) record creation 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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11-Oct-88 RTK Moved sk_list into db_global
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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 the value of a key field
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*/
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int
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d_setkey(long field, const char *fldvalue, int dbn)
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{
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SK_P *sk_ptr;
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SK_P sk_p;
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int fld, rec;
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RECORD_ENTRY *rec_ptr;
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FIELD_ENTRY *fld_ptr;
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DB_ENTER(DB_ID TASK_ID LOCK_SET(RECORD_NOIO));
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if (nfld_check(field, &rec, &fld, (RECORD_ENTRY * *)&rec_ptr, (FIELD_ENTRY * *)&fld_ptr) != S_OKAY)
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RETURN( db_status );
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if ( fld_ptr->fd_key == 'n' )
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RETURN( dberr(S_NOTKEY) );
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ll_access(&sk_list);
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while ((sk_ptr = (SK_P *)ll_next(&sk_list)) != NULL) {
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if ( sk_ptr->ptr->sk_fld == fld ) {
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MEM_LOCK(&sk_ptr->ptr->sk_val);
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if ( fld_ptr->fd_type != CHARACTER || fld_ptr->fd_dim[1] )
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bytecpy( sk_ptr->ptr->sk_val.ptr, fldvalue, fld_ptr->fd_len );
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else if ( fld_ptr->fd_dim[0] )
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strncpy( sk_ptr->ptr->sk_val.ptr, fldvalue, fld_ptr->fd_len );
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else
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*(sk_ptr->ptr->sk_val.ptr) = *fldvalue;
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MEM_UNLOCK(&sk_ptr->ptr->sk_val);
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ll_deaccess(&sk_list);
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RETURN( db_status = S_OKAY );
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}
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}
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/* need to allocate a slot for a new fld */
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sk_p.ptr = (struct sk *)ALLOC(&sk_p, sizeof(struct sk), "sk_ptr->ptr");
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if ( sk_p.ptr == NULL )
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RETURN( dberr( S_NOMEMORY ) );
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if ( ll_prepend(&sk_list, (CHAR_P *)&sk_p) != S_OKAY ) {
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RETURN( db_status );
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}
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sk_p.ptr->sk_fld = fld;
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sk_p.ptr->sk_val.ptr = ALLOC(&sk_p.ptr->sk_val, fld_ptr->fd_len + 1,
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"sk_p.ptr->sk_val.ptr");
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if ( sk_p.ptr->sk_val.ptr == NULL )
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RETURN( dberr( S_NOMEMORY ) );
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if ( fld_ptr->fd_type != CHARACTER || fld_ptr->fd_dim[1] )
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bytecpy( sk_p.ptr->sk_val.ptr, fldvalue, fld_ptr->fd_len );
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else if ( fld_ptr->fd_dim[0] )
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strncpy( sk_p.ptr->sk_val.ptr, fldvalue, fld_ptr->fd_len );
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else
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*(sk_p.ptr->sk_val.ptr) = *fldvalue;
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MEM_UNLOCK(&sk_p.ptr->sk_val);
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ll_deaccess(&sk_list);
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RETURN( db_status = S_OKAY );
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}
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/* Free the memory allocated for the sk_list
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*/
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int sk_free(void)
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{
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SK_P *sk_ptr;
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ll_access(&sk_list);
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while ((sk_ptr = (SK_P *)ll_next(&sk_list)) != NULL) {
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MEM_UNLOCK(&sk_ptr->ptr->sk_val);
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FREE(&sk_ptr->ptr->sk_val);
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}
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ll_deaccess(&sk_list);
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ll_free(&sk_list);
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return( db_status );
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}
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/* Create a new empty record
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*/
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int
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d_makenew(int nrec, int dbn)
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{
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DB_ADDR db_addr;
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INT recnum, fld, stat;
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FILE_NO file;
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F_ADDR rec_addr;
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char *ptr;
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SK_P *sk_ptr;
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RECORD_ENTRY *rec_ptr;
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FIELD_ENTRY *fld_ptr;
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int fldtot;
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DB_ENTER(DB_ID TASK_ID LOCK_SET(RECORD_IO));
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if (nrec_check(nrec, &nrec, (RECORD_ENTRY * *)&rec_ptr) != S_OKAY)
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RETURN( db_status );
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recnum = NUM2EXT(nrec, rt_offset);
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if ( rec_ptr->rt_flags & COMKEYED )
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RETURN( dberr(S_COMKEY) );
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/* check for duplicate keys */
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db_addr = curr_rec;
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for (fld = rec_ptr->rt_fields, fldtot = fld + rec_ptr->rt_fdtot,
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fld_ptr = &field_table[fld];
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fld < fldtot;
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++fld, ++fld_ptr) {
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if ((fld_ptr->fd_key == UNIQUE) && !(fld_ptr->fd_flags & OPTKEYMASK)) {
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/* locate the key value in the set_key table */
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ll_access(&sk_list);
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while (((sk_ptr = (SK_P *)ll_next(&sk_list)) != NULL) &&
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(sk_ptr->ptr->sk_fld != fld))
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; /* NOP */
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if (sk_ptr == NULL) {
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ll_deaccess(&sk_list);
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RETURN( dberr( S_KEYREQD ) );
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}
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MEM_LOCK(&sk_ptr->ptr->sk_val);
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d_keyfind(FLDMARK*(long)recnum + (long)(fld - rec_ptr->rt_fields),
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sk_ptr->ptr->sk_val.ptr , dbn);
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MEM_UNLOCK(&sk_ptr->ptr->sk_val);
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curr_rec = db_addr;
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ll_deaccess(&sk_list);
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if ( db_status == S_OKAY ) RETURN( db_status = S_DUPLICATE );
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}
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}
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/* pull out the file number */
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file = rec_ptr->rt_file;
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db_addr = (NUM2EXT(file, ft_offset) & FILEMASK) << FILESHIFT;
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/* select a record pointer to use */
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if ( dio_pzalloc(file, &rec_addr) != S_OKAY )
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RETURN( db_status );
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db_addr |= rec_addr;
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/* read record */
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if ( dio_read( db_addr, (char * *)&ptr, PGHOLD) != S_OKAY )
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RETURN( db_status );
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/* zero fill the record */
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byteset(ptr, 0, rec_ptr->rt_len);
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/* place the record number and db_addr at the start of the record */
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bytecpy( ptr, &recnum, sizeof(INT) );
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bytecpy( ptr+sizeof(INT), &db_addr, DB_ADDR_SIZE);
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/* for each keyed field, enter the key value into the key file */
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for (fld = rec_ptr->rt_fields, fldtot = fld + rec_ptr->rt_fdtot,
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fld_ptr = &field_table[fld];
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fld < fldtot;
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++fld, ++fld_ptr) {
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if ((fld_ptr->fd_key != 'n') && !(fld_ptr->fd_flags & OPTKEYMASK)) {
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/* locate the key value in the set_key table */
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ll_access(&sk_list);
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sk_ptr = (SK_P *)ll_first(&sk_list);
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while (sk_ptr != NULL) {
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if ( sk_ptr->ptr->sk_fld == fld ) {
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MEM_LOCK(&sk_ptr->ptr->sk_val);
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if ((stat = key_insert(fld, sk_ptr->ptr->sk_val.ptr, db_addr))
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!= S_OKAY) {
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dio_write(db_addr, NULL, PGFREE);
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r_delrec( nrec, db_addr );
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MEM_UNLOCK(&sk_ptr->ptr->sk_val);
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ll_deaccess(&sk_list);
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RETURN( db_status = stat );
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}
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if ((fld_ptr->fd_type != CHARACTER) || fld_ptr->fd_dim[0] )
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bytecpy(ptr+fld_ptr->fd_ptr, sk_ptr->ptr->sk_val.ptr,
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fld_ptr->fd_len);
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else
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strncpy(ptr + fld_ptr->fd_ptr, sk_ptr->ptr->sk_val.ptr,
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fld_ptr->fd_len);
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MEM_UNLOCK(&sk_ptr->ptr->sk_val);
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break;
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}
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sk_ptr = (SK_P *)ll_next(&sk_list);
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}
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ll_deaccess(&sk_list);
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if ( sk_ptr == NULL ) RETURN( dberr( S_KEYREQD ) );
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}
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}
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if ( dio_write(db_addr, NULL, PGFREE) == S_OKAY ) {
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curr_rec = db_addr;
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}
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RETURN( db_status );
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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 makenew.c */
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