17c478bd9Sstevel@tonic-gate /*-
27c478bd9Sstevel@tonic-gate * Copyright (c) 1990, 1993
37c478bd9Sstevel@tonic-gate * The Regents of the University of California. All rights reserved.
47c478bd9Sstevel@tonic-gate *
57c478bd9Sstevel@tonic-gate * This code is derived from software contributed to Berkeley by
67c478bd9Sstevel@tonic-gate * Margo Seltzer.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
97c478bd9Sstevel@tonic-gate * modification, are permitted provided that the following conditions
107c478bd9Sstevel@tonic-gate * are met:
117c478bd9Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright
127c478bd9Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
137c478bd9Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
147c478bd9Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
157c478bd9Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
167c478bd9Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
177c478bd9Sstevel@tonic-gate * must display the following acknowledgement:
187c478bd9Sstevel@tonic-gate * This product includes software developed by the University of
197c478bd9Sstevel@tonic-gate * California, Berkeley and its contributors.
207c478bd9Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors
217c478bd9Sstevel@tonic-gate * may be used to endorse or promote products derived from this software
227c478bd9Sstevel@tonic-gate * without specific prior written permission.
237c478bd9Sstevel@tonic-gate *
247c478bd9Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
257c478bd9Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
267c478bd9Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
277c478bd9Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
287c478bd9Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
297c478bd9Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
307c478bd9Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
317c478bd9Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
327c478bd9Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
337c478bd9Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
347c478bd9Sstevel@tonic-gate * SUCH DAMAGE.
357c478bd9Sstevel@tonic-gate */
367c478bd9Sstevel@tonic-gate
377c478bd9Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint)
387c478bd9Sstevel@tonic-gate static char sccsid[] = "@(#)hsearch.c 8.5 (Berkeley) 9/21/94";
397c478bd9Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */
407c478bd9Sstevel@tonic-gate
417c478bd9Sstevel@tonic-gate #include <sys/types.h>
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate #include <fcntl.h>
447c478bd9Sstevel@tonic-gate #include <string.h>
457c478bd9Sstevel@tonic-gate
467c478bd9Sstevel@tonic-gate #include "db-int.h"
477c478bd9Sstevel@tonic-gate #include "search.h"
487c478bd9Sstevel@tonic-gate
497c478bd9Sstevel@tonic-gate static DB *dbp = NULL;
507c478bd9Sstevel@tonic-gate static ENTRY retval;
517c478bd9Sstevel@tonic-gate
527c478bd9Sstevel@tonic-gate extern int
537c478bd9Sstevel@tonic-gate hcreate(nel)
547c478bd9Sstevel@tonic-gate u_int nel;
557c478bd9Sstevel@tonic-gate {
567c478bd9Sstevel@tonic-gate HASHINFO info;
577c478bd9Sstevel@tonic-gate
587c478bd9Sstevel@tonic-gate info.nelem = nel;
597c478bd9Sstevel@tonic-gate info.bsize = 256;
607c478bd9Sstevel@tonic-gate info.ffactor = 8;
617c478bd9Sstevel@tonic-gate info.cachesize = 0;
627c478bd9Sstevel@tonic-gate info.hash = NULL;
637c478bd9Sstevel@tonic-gate info.lorder = 0;
647c478bd9Sstevel@tonic-gate dbp = (DB *)__hash_open(NULL, O_CREAT | O_RDWR | O_BINARY, 0600, &info, 0);
657c478bd9Sstevel@tonic-gate return (dbp != NULL);
667c478bd9Sstevel@tonic-gate }
677c478bd9Sstevel@tonic-gate
687c478bd9Sstevel@tonic-gate extern ENTRY *
697c478bd9Sstevel@tonic-gate hsearch(item, action)
707c478bd9Sstevel@tonic-gate ENTRY item;
7156a424ccSmp ACTION action;
727c478bd9Sstevel@tonic-gate {
737c478bd9Sstevel@tonic-gate DBT key, val;
747c478bd9Sstevel@tonic-gate int status;
757c478bd9Sstevel@tonic-gate
767c478bd9Sstevel@tonic-gate if (!dbp)
777c478bd9Sstevel@tonic-gate return (NULL);
787c478bd9Sstevel@tonic-gate key.data = (u_char *)item.key;
797c478bd9Sstevel@tonic-gate key.size = strlen(item.key) + 1;
807c478bd9Sstevel@tonic-gate
817c478bd9Sstevel@tonic-gate if (action == ENTER) {
827c478bd9Sstevel@tonic-gate val.data = (u_char *)item.data;
837c478bd9Sstevel@tonic-gate val.size = strlen(item.data) + 1;
847c478bd9Sstevel@tonic-gate status = (dbp->put)(dbp, &key, &val, R_NOOVERWRITE);
857c478bd9Sstevel@tonic-gate if (status)
867c478bd9Sstevel@tonic-gate return (NULL);
877c478bd9Sstevel@tonic-gate } else {
887c478bd9Sstevel@tonic-gate /* FIND */
897c478bd9Sstevel@tonic-gate status = (dbp->get)(dbp, &key, &val, 0);
907c478bd9Sstevel@tonic-gate if (status)
917c478bd9Sstevel@tonic-gate return (NULL);
927c478bd9Sstevel@tonic-gate else
937c478bd9Sstevel@tonic-gate item.data = (char *)val.data;
947c478bd9Sstevel@tonic-gate }
957c478bd9Sstevel@tonic-gate retval.key = item.key;
967c478bd9Sstevel@tonic-gate retval.data = item.data;
977c478bd9Sstevel@tonic-gate return (&retval);
987c478bd9Sstevel@tonic-gate }
997c478bd9Sstevel@tonic-gate
1007c478bd9Sstevel@tonic-gate extern void
hdestroy()1017c478bd9Sstevel@tonic-gate hdestroy()
1027c478bd9Sstevel@tonic-gate {
1037c478bd9Sstevel@tonic-gate if (dbp) {
1047c478bd9Sstevel@tonic-gate (void)(dbp->close)(dbp);
1057c478bd9Sstevel@tonic-gate dbp = NULL;
1067c478bd9Sstevel@tonic-gate }
1077c478bd9Sstevel@tonic-gate }
108