#ifndef CCAN_TDB2_H
#define CCAN_TDB2_H
/*
Unix SMB/CIFS implementation.
trivial database library
Copyright (C) Andrew Tridgell 1999-2004
** NOTE! The following LGPL license applies to the tdb
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see .
*/
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _SAMBA_BUILD_
/* For mode_t */
#include
/* For O_* flags. */
#include
/* For sig_atomic_t. */
#include
/* For uint64_t */
#include
#endif
#include
/* flags to tdb_store() */
#define TDB_REPLACE 1 /* Unused */
#define TDB_INSERT 2 /* Don't overwrite an existing entry */
#define TDB_MODIFY 3 /* Don't create an existing entry */
/* flags for tdb_open() */
#define TDB_DEFAULT 0 /* just a readability place holder */
#define TDB_CLEAR_IF_FIRST 1
#define TDB_INTERNAL 2 /* don't store on disk */
#define TDB_NOLOCK 4 /* don't do any locking */
#define TDB_NOMMAP 8 /* don't use mmap */
#define TDB_CONVERT 16 /* convert endian */
#define TDB_NOSYNC 64 /* don't use synchronous transactions */
#define TDB_SEQNUM 128 /* maintain a sequence number */
#define TDB_VOLATILE 256 /* Activate the per-hashchain freelist, default 5 */
#define TDB_ALLOW_NESTING 512 /* Allow transactions to nest */
/* error codes */
enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK,
TDB_ERR_OOM, TDB_ERR_EXISTS, TDB_ERR_NOEXIST,
TDB_ERR_EINVAL, TDB_ERR_RDONLY, TDB_ERR_NESTING };
/* flags for tdb_summary. Logical or to combine. */
enum tdb_summary_flags { TDB_SUMMARY_HISTOGRAMS = 1 };
/* debugging uses one of the following levels */
enum tdb_debug_level {TDB_DEBUG_FATAL = 0, TDB_DEBUG_ERROR,
TDB_DEBUG_WARNING, TDB_DEBUG_TRACE};
typedef struct tdb_data {
unsigned char *dptr;
size_t dsize;
} TDB_DATA;
struct tdb_context;
/* FIXME: Make typesafe */
typedef int (*tdb_traverse_func)(struct tdb_context *, TDB_DATA, TDB_DATA, void *);
typedef void (*tdb_logfn_t)(struct tdb_context *, enum tdb_debug_level, void *priv, const char *, ...) PRINTF_FMT(4, 5);
typedef uint64_t (*tdb_hashfn_t)(const void *key, size_t len, uint64_t seed,
void *priv);
enum tdb_attribute_type {
TDB_ATTRIBUTE_LOG = 0,
TDB_ATTRIBUTE_HASH = 1,
TDB_ATTRIBUTE_SEED = 2
};
struct tdb_attribute_base {
enum tdb_attribute_type attr;
union tdb_attribute *next;
};
struct tdb_attribute_log {
struct tdb_attribute_base base; /* .attr = TDB_ATTRIBUTE_LOG */
tdb_logfn_t log_fn;
void *log_private;
};
struct tdb_attribute_hash {
struct tdb_attribute_base base; /* .attr = TDB_ATTRIBUTE_HASH */
tdb_hashfn_t hash_fn;
void *hash_private;
};
struct tdb_attribute_seed {
struct tdb_attribute_base base; /* .attr = TDB_ATTRIBUTE_SEED */
uint64_t seed;
};
union tdb_attribute {
struct tdb_attribute_base base;
struct tdb_attribute_log log;
struct tdb_attribute_hash hash;
struct tdb_attribute_seed seed;
};
struct tdb_context *tdb_open(const char *name, int tdb_flags,
int open_flags, mode_t mode,
union tdb_attribute *attributes);
struct tdb_data tdb_fetch(struct tdb_context *tdb, struct tdb_data key);
int tdb_delete(struct tdb_context *tdb, struct tdb_data key);
int tdb_store(struct tdb_context *tdb, struct tdb_data key, struct tdb_data dbuf, int flag);
int tdb_append(struct tdb_context *tdb, struct tdb_data key, struct tdb_data dbuf);
int tdb_chainlock(struct tdb_context *tdb, TDB_DATA key);
int tdb_chainunlock(struct tdb_context *tdb, TDB_DATA key);
int64_t tdb_traverse(struct tdb_context *tdb, tdb_traverse_func fn, void *p);
int64_t tdb_traverse_read(struct tdb_context *tdb,
tdb_traverse_func fn, void *p);
TDB_DATA tdb_firstkey(struct tdb_context *tdb);
TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA key);
int tdb_close(struct tdb_context *tdb);
int tdb_check(struct tdb_context *tdb,
int (*check)(TDB_DATA key, TDB_DATA data, void *private_data),
void *private_data);
enum TDB_ERROR tdb_error(struct tdb_context *tdb);
const char *tdb_errorstr(struct tdb_context *tdb);
char *tdb_summary(struct tdb_context *tdb, enum tdb_summary_flags flags);
extern struct tdb_data tdb_null;
#ifdef __cplusplus
}
#endif
#endif /* tdb2.h */