#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)ndbm.c 8.4 (Berkeley) 7/21/94";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/db/hash/ndbm.c,v 1.6 2002/03/22 21:52:01 obrien Exp $");
#include <sys/param.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <db.h>
#define _DBM
typedef DB DBM;
#include <ndbm.h>
#include "hash.h"
extern DBM *
dbm_open(file, flags, mode)
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, &info, 0));
}
extern void
dbm_close(db)
DBM *db;
{
(void)(db->close)(db);
}
extern datum
dbm_fetch(db, key)
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);
}
extern datum
dbm_firstkey(db)
DBM *db;
{
int status;
datum retkey;
DBT dbtretkey, dbtretdata;
HTAB *htab = (HTAB *)(db->internal);
status = (db->seq)(db, &dbtretkey, &dbtretdata, R_FIRST);
if (status) {
dbtretkey.data = NULL;
htab->nextkey_eof = 1;
} else
htab->nextkey_eof = 0;
retkey.dptr = dbtretkey.data;
retkey.dsize = dbtretkey.size;
return (retkey);
}
extern datum
dbm_nextkey(db)
DBM *db;
{
int status = 1;
datum retkey;
DBT dbtretkey, dbtretdata;
HTAB *htab = (HTAB *)(db->internal);
if (htab->nextkey_eof)
dbtretkey.data = NULL;
else {
status = (db->seq)(db, &dbtretkey, &dbtretdata, R_NEXT);
if (status) {
dbtretkey.data = NULL;
htab->nextkey_eof = 1;
}
}
retkey.dptr = dbtretkey.data;
retkey.dsize = dbtretkey.size;
return (retkey);
}
extern int
dbm_delete(db, key)
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);
}
extern int
dbm_store(db, key, data, flags)
DBM *db;
datum key, 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(db)
DBM *db;
{
HTAB *hp;
hp = (HTAB *)db->internal;
return (hp->error);
}
extern int
dbm_clearerr(db)
DBM *db;
{
HTAB *hp;
hp = (HTAB *)db->internal;
hp->error = 0;
return (0);
}
extern int
dbm_dirfno(db)
DBM *db;
{
return(((HTAB *)db->internal)->fp);
}