Port ndbm
This commit is contained in:
Vaibhav Gupta
Corinna Vinschen
parent
942f60d714
commit
e50ad9fbdc
|
|
@ -0,0 +1,93 @@
|
||||||
|
/*-
|
||||||
|
* 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.
|
||||||
|
*
|
||||||
|
* @(#)ndbm.h 8.1 (Berkeley) 6/2/93
|
||||||
|
* $FreeBSD$ : src/include/ndbm.h
|
||||||
|
* Nov 20 19:45:28 2017 UTC by pfg
|
||||||
|
* SVN Revision 326024
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _NDBM_H_
|
||||||
|
#define _NDBM_H_
|
||||||
|
|
||||||
|
/* #include <db.h> */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The above header-file is directly included in `newlib/libc/search/ndbm.c`
|
||||||
|
* as `db.h` is present in form of `db_local.h`, inside `newlib/libc/search`
|
||||||
|
* directory and not in `newlib/libc/include`.
|
||||||
|
* Necessary data-types are mentioned in form of forward-declarations
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* Map dbm interface onto db(3). */
|
||||||
|
#define DBM_RDONLY O_RDONLY
|
||||||
|
|
||||||
|
/* Flags to dbm_store(). */
|
||||||
|
#define DBM_INSERT 0
|
||||||
|
#define DBM_REPLACE 1
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The db(3) support for ndbm always appends this suffix to the
|
||||||
|
* file name to avoid overwriting the user's original database.
|
||||||
|
*/
|
||||||
|
#define DBM_SUFFIX ".db"
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
void *dptr;
|
||||||
|
int dsize; /* XXX Should be size_t according to 1003.1-2008. */
|
||||||
|
} datum;
|
||||||
|
|
||||||
|
struct __db; /* Forward-declaration */
|
||||||
|
typedef struct __db DB; /* Forward-declaration */
|
||||||
|
typedef DB DBM;
|
||||||
|
#define dbm_pagfno(a) DBM_PAGFNO_NOT_AVAILABLE
|
||||||
|
|
||||||
|
__BEGIN_DECLS
|
||||||
|
int dbm_clearerr(DBM *);
|
||||||
|
void dbm_close(DBM *);
|
||||||
|
int dbm_delete(DBM *, datum);
|
||||||
|
int dbm_error(DBM *);
|
||||||
|
datum dbm_fetch(DBM *, datum);
|
||||||
|
datum dbm_firstkey(DBM *);
|
||||||
|
#if __BSD_VISIBLE
|
||||||
|
long dbm_forder(DBM *, datum);
|
||||||
|
#endif
|
||||||
|
datum dbm_nextkey(DBM *);
|
||||||
|
DBM *dbm_open(const char *, int, mode_t);
|
||||||
|
int dbm_store(DBM *, datum, datum, int);
|
||||||
|
#if __BSD_VISIBLE
|
||||||
|
int dbm_dirfno(DBM *);
|
||||||
|
#endif
|
||||||
|
__END_DECLS
|
||||||
|
|
||||||
|
#endif /* !_NDBM_H_ */
|
||||||
|
|
@ -9,6 +9,7 @@ GENERAL_SOURCES = \
|
||||||
db_local.h \
|
db_local.h \
|
||||||
extern.h \
|
extern.h \
|
||||||
hash.h \
|
hash.h \
|
||||||
|
ndbm.c \
|
||||||
page.h \
|
page.h \
|
||||||
qsort.c
|
qsort.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);
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue