diff options
author | Vaibhav Gupta <vaibhavgupta40@gmail.com> | 2019-07-10 11:55:50 +0300 |
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committer | Corinna Vinschen <corinna@vinschen.de> | 2019-07-24 10:19:40 +0300 |
commit | e50ad9fbdc5adfb5c13954a2798d1ea0ad53db34 (patch) | |
tree | 1de090d5ee80fa3049b317a83292ad1100851511 /newlib/libc/search | |
parent | 942f60d714e18cd775dc8b0a661cf70eef162bcc (diff) |
Port ndbm
Diffstat (limited to 'newlib/libc/search')
-rw-r--r-- | newlib/libc/search/Makefile.am | 1 | ||||
-rw-r--r-- | newlib/libc/search/ndbm.c | 217 |
2 files changed, 218 insertions, 0 deletions
diff --git a/newlib/libc/search/Makefile.am b/newlib/libc/search/Makefile.am index 98920c3f4..a61107fb9 100644 --- a/newlib/libc/search/Makefile.am +++ b/newlib/libc/search/Makefile.am @@ -9,6 +9,7 @@ GENERAL_SOURCES = \ db_local.h \ extern.h \ hash.h \ + ndbm.c \ page.h \ qsort.c diff --git a/newlib/libc/search/ndbm.c b/newlib/libc/search/ndbm.c new file mode 100644 index 000000000..7f3296078 --- /dev/null +++ b/newlib/libc/search/ndbm.c @@ -0,0 +1,217 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Margo Seltzer. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ndbm.c 8.4 (Berkeley) 7/21/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$ : src/lib/libc/db/hash/ndbm.c Nov 20 19:49:47 2017 UTC by pfg - SVN Revision 326025"); + +/* + * This package provides a dbm compatible interface to the new hashing + * package described in db(3). + */ + +#include <sys/param.h> + +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include <ndbm.h> +#include "hash.h" + +#define __DBINTERFACE_PRIVATE /* activate prototypes from db_local.h */ +#include "db_local.h" + +/* + * Returns: + * *DBM on success + * NULL on failure + */ +extern DBM * +dbm_open(const char *file, int flags, mode_t mode) +{ + HASHINFO info; + char path[MAXPATHLEN]; + + info.bsize = 4096; + info.ffactor = 40; + info.nelem = 1; + info.cachesize = 0; + info.hash = NULL; + info.lorder = 0; + + if( strlen(file) >= sizeof(path) - strlen(DBM_SUFFIX)) { + errno = ENAMETOOLONG; + return(NULL); + } + (void)strcpy(path, file); + (void)strcat(path, DBM_SUFFIX); + return ((DBM *)__hash_open(path, flags, mode, 0, &info)); +} + +extern void +dbm_close(DBM *db) +{ + (void)(db->close)(db); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ +extern datum +dbm_fetch(DBM *db, datum key) +{ + datum retdata; + int status; + DBT dbtkey, dbtretdata; + + dbtkey.data = key.dptr; + dbtkey.size = key.dsize; + status = (db->get)(db, &dbtkey, &dbtretdata, 0); + if (status) { + dbtretdata.data = NULL; + dbtretdata.size = 0; + } + retdata.dptr = dbtretdata.data; + retdata.dsize = dbtretdata.size; + return (retdata); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ +extern datum +dbm_firstkey(DBM *db) +{ + int status; + datum retkey; + DBT dbtretkey, dbtretdata; + + status = (db->seq)(db, &dbtretkey, &dbtretdata, R_FIRST); + if (status) + dbtretkey.data = NULL; + retkey.dptr = dbtretkey.data; + retkey.dsize = dbtretkey.size; + return (retkey); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ +extern datum +dbm_nextkey(DBM *db) +{ + int status; + datum retkey; + DBT dbtretkey, dbtretdata; + + status = (db->seq)(db, &dbtretkey, &dbtretdata, R_NEXT); + if (status) + dbtretkey.data = NULL; + retkey.dptr = dbtretkey.data; + retkey.dsize = dbtretkey.size; + return (retkey); +} + +/* + * Returns: + * 0 on success + * <0 failure + */ +extern int +dbm_delete(DBM *db, datum key) +{ + int status; + DBT dbtkey; + + dbtkey.data = key.dptr; + dbtkey.size = key.dsize; + status = (db->del)(db, &dbtkey, 0); + if (status) + return (-1); + else + return (0); +} + +/* + * Returns: + * 0 on success + * <0 failure + * 1 if DBM_INSERT and entry exists + */ +extern int +dbm_store(DBM *db, datum key, datum data, int flags) +{ + DBT dbtkey, dbtdata; + + dbtkey.data = key.dptr; + dbtkey.size = key.dsize; + dbtdata.data = data.dptr; + dbtdata.size = data.dsize; + return ((db->put)(db, &dbtkey, &dbtdata, + (flags == DBM_INSERT) ? R_NOOVERWRITE : 0)); +} + +extern int +dbm_error(DBM *db) +{ + HTAB *hp; + + hp = (HTAB *)db->internal; + return (hp->error); +} + +extern int +dbm_clearerr(DBM *db) +{ + HTAB *hp; + + hp = (HTAB *)db->internal; + hp->error = 0; + return (0); +} + +extern int +dbm_dirfno(DBM *db) +{ + return(((HTAB *)db->internal)->fp); +} |