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/*
Unix SMB/CIFS implementation.
tdb utility functions
Copyright (C) Rusty Russell 2012
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _____LIB_UTIL_UTIL_NTDB_H__
#define _____LIB_UTIL_UTIL_NTDB_H__
#include <ntdb.h>
#include <talloc.h>
struct loadparm_context;
union ntdb_attribute;
/* You only need this on databases with NTDB_CLEAR_IF_FIRST */
int ntdb_reopen(struct ntdb_context *ntdb);
/* You only need to do this if you have NTDB_CLEAR_IF_FIRST databases, and
* the parent will go away before this child. */
int ntdb_reopen_all(void);
/*
* This is like TDB_CLEAR_IF_FIRST, for use with ntdb_new.
*
* It's a bad idea for new code.
*/
#define NTDB_CLEAR_IF_FIRST 1048576
/***************************************************************
Open an NTDB using talloc: it will be allocated off the context, and
all NTDB_DATA.dptr are allocated as children of the ntdb context.
Sets up a logging function for you, and uses lp_ctx to decide whether
to disable mmap.
Any extra ntdb attributes can be handed through attr; usually it's
NULL, ntdb_new provides logging and allocator attributes.
The destructor for the struct ntdb_context will do ntdb_close()
for you.
****************************************************************/
struct ntdb_context *ntdb_new(TALLOC_CTX *ctx,
const char *name, int ntdb_flags,
int open_flags, mode_t mode,
union ntdb_attribute *attr,
struct loadparm_context *lp_ctx);
/****************************************************************************
Lock a chain by string.
****************************************************************************/
enum NTDB_ERROR ntdb_lock_bystring(struct ntdb_context *ntdb,
const char *keyval);
/****************************************************************************
Unlock a chain by string.
****************************************************************************/
void ntdb_unlock_bystring(struct ntdb_context *ntdb, const char *keyval);
/****************************************************************************
Delete an entry using a null terminated string key.
****************************************************************************/
enum NTDB_ERROR ntdb_delete_bystring(struct ntdb_context *ntdb,
const char *keystr);
/****************************************************************************
Store a buffer by a null terminated string key. Return 0 on success, -ve
on failure.
****************************************************************************/
enum NTDB_ERROR ntdb_store_bystring(struct ntdb_context *ntdb,
const char *keystr,
NTDB_DATA data, int nflags);
/****************************************************************************
Fetch a buffer using a null terminated string key. Don't forget to call
free() on the result dptr (unless the ntdb is from ntdb_new, in which case
it will be a child of ntdb).
****************************************************************************/
enum NTDB_ERROR ntdb_fetch_bystring(struct ntdb_context *ntdb,
const char *keystr,
NTDB_DATA *data);
/****************************************************************************
Turn a nul-terminated string into an NTDB_DATA.
****************************************************************************/
static inline NTDB_DATA string_term_ntdb_data(const char *string)
{
return ntdb_mkdata(string, string ? strlen(string) + 1 : 0);
}
#endif /* _____LIB_UTIL_UTIL_NTDB_H__ */
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