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/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
/* Copyright (c) The Exim Maintainers 2022 */
/* Copyright (c) University of Cambridge 1995 - 2021 */
/* See the file NOTICE for conditions of use and distribution. */
#ifndef DBFUNCTIONS_H
#define DBFUNCTIONS_H
/* Functions for reading/writing exim database files */
void dbfn_close(open_db *);
int dbfn_delete(open_db *, const uschar *);
open_db *dbfn_open(uschar *, int, open_db *, BOOL, BOOL);
void *dbfn_read_with_length(open_db *, const uschar *, int *);
void *dbfn_read_enforce_length(open_db *, const uschar *, size_t);
uschar *dbfn_scan(open_db *, BOOL, EXIM_CURSOR **);
int dbfn_write(open_db *, const uschar *, void *, int);
/* Macro for the common call to read without wanting to know the length. */
#define dbfn_read(a, b) dbfn_read_with_length(a, b, NULL)
/* Berkeley DB uses a callback function to pass back error details. Its API
changed at release 4.3. */
#if defined(USE_DB) && defined(DB_VERSION_STRING)
# if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
void dbfn_bdb_error_callback(const DB_ENV *, const char *, const char *);
# else
void dbfn_bdb_error_callback(const char *, char *);
# endif
#endif
#endif
/* End of dbfunctions.h */
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