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#ifndef __TDB_H__

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#define __TDB_H__

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Unix SMB/CIFS implementation.

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trivial database library

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** NOTE! The following LGPL license applies to the tdb

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** library. This does NOT imply that all of Samba is released

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** under the LGPL

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This library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2 of the License, or (at your option) any later version.

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This library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with this library; if not, write to the Free Software

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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

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#ifdef __cplusplus

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extern "C" {

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#endif

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/* flags to tdb_store() */

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#define TDB_REPLACE 1

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#define TDB_INSERT 2

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#define TDB_MODIFY 3

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/* flags for tdb_open() */

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#define TDB_DEFAULT 0 /* just a readability place holder */

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#define TDB_CLEAR_IF_FIRST 1

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#define TDB_INTERNAL 2 /* don't store on disk */

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#define TDB_NOLOCK 4 /* don't do any locking */

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#define TDB_NOMMAP 8 /* don't use mmap */

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#define TDB_CONVERT 16 /* convert endian (internal use) */

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#define TDB_BIGENDIAN 32 /* header is big-endian (internal use) */

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#define TDB_NOSYNC 64 /* don't use synchronous transactions */

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#define TDB_SEQNUM 128 /* maintain a sequence number */

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#define TDB_ERRCODE(code, ret) ((tdb->ecode = (code)), ret)

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/* error codes */

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enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK,

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TDB_ERR_OOM, TDB_ERR_EXISTS, TDB_ERR_NOLOCK, TDB_ERR_LOCK_TIMEOUT,

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TDB_ERR_NOEXIST, TDB_ERR_EINVAL, TDB_ERR_RDONLY};

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/* debugging uses one of the following levels */

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enum tdb_debug_level {TDB_DEBUG_FATAL = 0, TDB_DEBUG_ERROR,

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TDB_DEBUG_WARNING, TDB_DEBUG_TRACE};

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typedef struct TDB_DATA {

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unsigned char *dptr;

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size_t dsize;

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} TDB_DATA;

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#ifndef PRINTF_ATTRIBUTE

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#if (__GNUC__ >= 3)

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/** Use gcc attribute to check printf fns. a1 is the 1-based index of

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* the parameter containing the format, and a2 the index of the first

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* argument. Note that some gcc 2.x versions don't handle this

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* properly **/

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#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))

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#else

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#define PRINTF_ATTRIBUTE(a1, a2)

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#endif

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#endif

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/* ext2fs tdb renames */

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#define tdb_open ext2fs_tdb_open

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#define tdb_open_ex ext2fs_tdb_open_ex

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#define tdb_set_max_dead ext2fs_tdb_set_max_dead

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#define tdb_reopen ext2fs_tdb_reopen

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#define tdb_reopen_all ext2fs_tdb_reopen_all

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#define tdb_set_logging_function ext2fs_tdb_set_logging_function

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#define tdb_error ext2fs_tdb_error

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#define tdb_errorstr ext2fs_tdb_errorstr

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#define tdb_fetch ext2fs_tdb_fetch

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#define tdb_parse_record ext2fs_tdb_parse_record

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#define tdb_delete ext2fs_tdb_delete

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#define tdb_store ext2fs_tdb_store

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#define tdb_append ext2fs_tdb_append

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#define tdb_close ext2fs_tdb_close

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#define tdb_firstkey ext2fs_tdb_firstkey

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#define tdb_nextkey ext2fs_tdb_nextkey

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#define tdb_traverse ext2fs_tdb_traverse

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#define tdb_traverse_read ext2fs_tdb_traverse_read

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#define tdb_exists ext2fs_tdb_exists

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#define tdb_lockall ext2fs_tdb_lockall

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#define tdb_unlockall ext2fs_tdb_unlockall

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#define tdb_lockall_read ext2fs_tdb_lockall_read

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#define tdb_unlockall_read ext2fs_tdb_unlockall_read

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#define tdb_name ext2fs_tdb_name

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#define tdb_fd ext2fs_tdb_fd

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#define tdb_log_fn ext2fs_tdb_log_fn

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#define tdb_get_logging_private ext2fs_tdb_get_logging_private

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#define tdb_transaction_start ext2fs_tdb_transaction_start

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#define tdb_transaction_commit ext2fs_tdb_transaction_commit

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#define tdb_transaction_cancel ext2fs_tdb_transaction_cancel

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#define tdb_transaction_recover ext2fs_tdb_transaction_recover

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#define tdb_get_seqnum ext2fs_tdb_get_seqnum

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#define tdb_hash_size ext2fs_tdb_hash_size

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#define tdb_map_size ext2fs_tdb_map_size

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#define tdb_get_flags ext2fs_tdb_get_flags

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#define tdb_chainlock ext2fs_tdb_chainlock

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#define tdb_chainunlock ext2fs_tdb_chainunlock

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#define tdb_chainlock_read ext2fs_tdb_chainlock_read

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#define tdb_chainunlock_read ext2fs_tdb_chainunlock_read

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#define tdb_dump_all ext2fs_tdb_dump_all

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#define tdb_printfreelist ext2fs_tdb_printfreelist

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#define tdb_validate_freelist ext2fs_tdb_validate_freelist

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#define tdb_chainlock_mark ext2fs_tdb_chainlock_mark

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#define tdb_chainlock_nonblock ext2fs_tdb_chainlock_nonblock

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#define tdb_chainlock_unmark ext2fs_tdb_chainlock_unmark

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#define tdb_enable_seqnum ext2fs_tdb_enable_seqnum

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#define tdb_increment_seqnum_nonblock ext2fs_tdb_increment_seqnum_nonblock

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#define tdb_lock_nonblock ext2fs_tdb_lock_nonblock

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#define tdb_lockall_mark ext2fs_tdb_lockall_mark

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#define tdb_lockall_nonblock ext2fs_tdb_lockall_nonblock

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#define tdb_lockall_read_nonblock ext2fs_tdb_lockall_read_nonblock

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#define tdb_lockall_unmark ext2fs_tdb_lockall_unmark

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#define tdb_flush ext2fs_tdb_flush

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/* this is the context structure that is returned from a db open */

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typedef struct tdb_context TDB_CONTEXT;

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typedef int (*tdb_traverse_func)(struct tdb_context *, TDB_DATA, TDB_DATA, void *);

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typedef void (*tdb_log_func)(struct tdb_context *, enum tdb_debug_level, const char *, ...) PRINTF_ATTRIBUTE(3, 4);

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typedef unsigned int (*tdb_hash_func)(TDB_DATA *key);

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struct tdb_logging_context {

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tdb_log_func log_fn;

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void *log_private;

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};

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struct tdb_context *tdb_open(const char *name, int hash_size, int tdb_flags,

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int open_flags, mode_t mode);

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struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,

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int open_flags, mode_t mode,

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const struct tdb_logging_context *log_ctx,

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tdb_hash_func hash_fn);

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void tdb_set_max_dead(struct tdb_context *tdb, int max_dead);

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int tdb_reopen(struct tdb_context *tdb);

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int tdb_reopen_all(int parent_longlived);

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void tdb_set_logging_function(struct tdb_context *tdb, const struct tdb_logging_context *log_ctx);

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enum TDB_ERROR tdb_error(struct tdb_context *tdb);

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const char *tdb_errorstr(struct tdb_context *tdb);

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TDB_DATA tdb_fetch(struct tdb_context *tdb, TDB_DATA key);

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int tdb_parse_record(struct tdb_context *tdb, TDB_DATA key,

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int (*parser)(TDB_DATA key, TDB_DATA data,

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void *private_data),

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void *private_data);

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int tdb_delete(struct tdb_context *tdb, TDB_DATA key);

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int tdb_store(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf, int flag);

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int tdb_append(struct tdb_context *tdb, TDB_DATA key, TDB_DATA new_dbuf);

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int tdb_close(struct tdb_context *tdb);

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TDB_DATA tdb_firstkey(struct tdb_context *tdb);

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TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA key);

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int tdb_traverse(struct tdb_context *tdb, tdb_traverse_func fn, void *);

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int tdb_traverse_read(struct tdb_context *tdb, tdb_traverse_func fn, void *);

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int tdb_exists(struct tdb_context *tdb, TDB_DATA key);

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int tdb_lockall(struct tdb_context *tdb);

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int tdb_lockall_nonblock(struct tdb_context *tdb);

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int tdb_unlockall(struct tdb_context *tdb);

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int tdb_lockall_read(struct tdb_context *tdb);

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int tdb_lockall_read_nonblock(struct tdb_context *tdb);

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int tdb_unlockall_read(struct tdb_context *tdb);

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int tdb_lockall_mark(struct tdb_context *tdb);

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int tdb_lockall_unmark(struct tdb_context *tdb);

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const char *tdb_name(struct tdb_context *tdb);

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int tdb_fd(struct tdb_context *tdb);

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tdb_log_func tdb_log_fn(struct tdb_context *tdb);

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void *tdb_get_logging_private(struct tdb_context *tdb);

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int tdb_transaction_start(struct tdb_context *tdb);

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int tdb_transaction_commit(struct tdb_context *tdb);

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int tdb_transaction_cancel(struct tdb_context *tdb);

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int tdb_transaction_recover(struct tdb_context *tdb);

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int tdb_get_seqnum(struct tdb_context *tdb);

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int tdb_hash_size(struct tdb_context *tdb);

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size_t tdb_map_size(struct tdb_context *tdb);

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int tdb_get_flags(struct tdb_context *tdb);

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void tdb_enable_seqnum(struct tdb_context *tdb);

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void tdb_increment_seqnum_nonblock(struct tdb_context *tdb);

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int tdb_flush(struct tdb_context *tdb);

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/* Low level locking functions: use with care */

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int tdb_chainlock(struct tdb_context *tdb, TDB_DATA key);

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int tdb_chainlock_nonblock(struct tdb_context *tdb, TDB_DATA key);

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int tdb_chainunlock(struct tdb_context *tdb, TDB_DATA key);

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int tdb_chainlock_read(struct tdb_context *tdb, TDB_DATA key);

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int tdb_chainunlock_read(struct tdb_context *tdb, TDB_DATA key);

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int tdb_chainlock_mark(struct tdb_context *tdb, TDB_DATA key);

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int tdb_chainlock_unmark(struct tdb_context *tdb, TDB_DATA key);

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/* Debug functions. Not used in production. */

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void tdb_dump_all(struct tdb_context *tdb);

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int tdb_printfreelist(struct tdb_context *tdb);

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int tdb_validate_freelist(struct tdb_context *tdb, int *pnum_entries);

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#ifdef __cplusplus

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}

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#endif

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#endif /* tdb.h */

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