s3:dbwrap: move all .c and .h files of dbwrap to lib/dbwrap/

Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Fri Jul 29 13:34:22 CEST 2011 on sn-devel-104

1 files changed, 0 insertions, 1440 deletions

diff --git a/source3/lib/dbwrap_ctdb.c b/source3/lib/dbwrap_ctdb.c
deleted file mode 100644
index 049fef6bc7..0000000000
--- a/source3/lib/dbwrap_ctdb.c
+++ /dev/null
@@ -1,1440 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-   Database interface wrapper around ctdbd
-   Copyright (C) Volker Lendecke 2007-2009
-   Copyright (C) Michael Adam 2009
-
-   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/>.
-*/
-
-#include "includes.h"
-#include "system/filesys.h"
-#include "lib/util/tdb_wrap.h"
-#include "util_tdb.h"
-#ifdef CLUSTER_SUPPORT
-#include "ctdb.h"
-#include "ctdb_private.h"
-#include "ctdbd_conn.h"
-#include "dbwrap.h"
-#include "g_lock.h"
-#include "messages.h"
-
-struct db_ctdb_transaction_handle {
-	struct db_ctdb_ctx *ctx;
-	/*
-	 * we store the reads and writes done under a transaction:
-	 * - one list stores both reads and writes (m_all),
-	 * - the other just writes (m_write)
-	 */
-	struct ctdb_marshall_buffer *m_all;
-	struct ctdb_marshall_buffer *m_write;
-	uint32_t nesting;
-	bool nested_cancel;
-	char *lock_name;
-};
-
-struct db_ctdb_ctx {
-	struct db_context *db;
-	struct tdb_wrap *wtdb;
-	uint32 db_id;
-	struct db_ctdb_transaction_handle *transaction;
-	struct g_lock_ctx *lock_ctx;
-};
-
-struct db_ctdb_rec {
-	struct db_ctdb_ctx *ctdb_ctx;
-	struct ctdb_ltdb_header header;
-	struct timeval lock_time;
-};
-
-static NTSTATUS tdb_error_to_ntstatus(struct tdb_context *tdb)
-{
-	NTSTATUS status;
-	enum TDB_ERROR tret = tdb_error(tdb);
-
-	switch (tret) {
-	case TDB_ERR_EXISTS:
-		status = NT_STATUS_OBJECT_NAME_COLLISION;
-		break;
-	case TDB_ERR_NOEXIST:
-		status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
-		break;
-	default:
-		status = NT_STATUS_INTERNAL_DB_CORRUPTION;
-		break;
-	}
-
-	return status;
-}
-
-
-/**
- * fetch a record from the tdb, separating out the header
- * information and returning the body of the record.
- */
-static NTSTATUS db_ctdb_ltdb_fetch(struct db_ctdb_ctx *db,
-				   TDB_DATA key,
-				   struct ctdb_ltdb_header *header,
-				   TALLOC_CTX *mem_ctx,
-				   TDB_DATA *data)
-{
-	TDB_DATA rec;
-	NTSTATUS status;
-
-	rec = tdb_fetch_compat(db->wtdb->tdb, key);
-	if (rec.dsize < sizeof(struct ctdb_ltdb_header)) {
-		status = NT_STATUS_NOT_FOUND;
-		if (data) {
-			ZERO_STRUCTP(data);
-		}
-		if (header) {
-			header->dmaster = (uint32_t)-1;
-			header->rsn = 0;
-		}
-		goto done;
-	}
-
-	if (header) {
-		*header = *(struct ctdb_ltdb_header *)rec.dptr;
-	}
-
-	if (data) {
-		data->dsize = rec.dsize - sizeof(struct ctdb_ltdb_header);
-		if (data->dsize == 0) {
-			data->dptr = NULL;
-		} else {
-			data->dptr = (unsigned char *)talloc_memdup(mem_ctx,
-					rec.dptr
-					 + sizeof(struct ctdb_ltdb_header),
-					data->dsize);
-			if (data->dptr == NULL) {
-				status = NT_STATUS_NO_MEMORY;
-				goto done;
-			}
-		}
-	}
-
-	status = NT_STATUS_OK;
-
-done:
-	SAFE_FREE(rec.dptr);
-	return status;
-}
-
-/*
- * Store a record together with the ctdb record header
- * in the local copy of the database.
- */
-static NTSTATUS db_ctdb_ltdb_store(struct db_ctdb_ctx *db,
-				   TDB_DATA key,
-				   struct ctdb_ltdb_header *header,
-				   TDB_DATA data)
-{
-	TALLOC_CTX *tmp_ctx = talloc_stackframe();
-	TDB_DATA rec;
-	int ret;
-
-	rec.dsize = data.dsize + sizeof(struct ctdb_ltdb_header);
-	rec.dptr = (uint8_t *)talloc_size(tmp_ctx, rec.dsize);
-
-	if (rec.dptr == NULL) {
-		talloc_free(tmp_ctx);
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	memcpy(rec.dptr, header, sizeof(struct ctdb_ltdb_header));
-	memcpy(sizeof(struct ctdb_ltdb_header) + (uint8_t *)rec.dptr, data.dptr, data.dsize);
-
-	ret = tdb_store(db->wtdb->tdb, key, rec, TDB_REPLACE);
-
-	talloc_free(tmp_ctx);
-
-	return (ret == 0) ? NT_STATUS_OK
-			  : tdb_error_to_ntstatus(db->wtdb->tdb);
-
-}
-
-/*
-  form a ctdb_rec_data record from a key/data pair
-
-  note that header may be NULL. If not NULL then it is included in the data portion
-  of the record
- */
-static struct ctdb_rec_data *db_ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid,	
-						  TDB_DATA key, 
-						  struct ctdb_ltdb_header *header,
-						  TDB_DATA data)
-{
-	size_t length;
-	struct ctdb_rec_data *d;
-
-	length = offsetof(struct ctdb_rec_data, data) + key.dsize + 
-		data.dsize + (header?sizeof(*header):0);
-	d = (struct ctdb_rec_data *)talloc_size(mem_ctx, length);
-	if (d == NULL) {
-		return NULL;
-	}
-	d->length = length;
-	d->reqid = reqid;
-	d->keylen = key.dsize;
-	memcpy(&d->data[0], key.dptr, key.dsize);
-	if (header) {
-		d->datalen = data.dsize + sizeof(*header);
-		memcpy(&d->data[key.dsize], header, sizeof(*header));
-		memcpy(&d->data[key.dsize+sizeof(*header)], data.dptr, data.dsize);
-	} else {
-		d->datalen = data.dsize;
-		memcpy(&d->data[key.dsize], data.dptr, data.dsize);
-	}
-	return d;
-}
-
-
-/* helper function for marshalling multiple records */
-static struct ctdb_marshall_buffer *db_ctdb_marshall_add(TALLOC_CTX *mem_ctx, 
-					       struct ctdb_marshall_buffer *m,
-					       uint64_t db_id,
-					       uint32_t reqid,
-					       TDB_DATA key,
-					       struct ctdb_ltdb_header *header,
-					       TDB_DATA data)
-{
-	struct ctdb_rec_data *r;
-	size_t m_size, r_size;
-	struct ctdb_marshall_buffer *m2 = NULL;
-
-	r = db_ctdb_marshall_record(talloc_tos(), reqid, key, header, data);
-	if (r == NULL) {
-		talloc_free(m);
-		return NULL;
-	}
-
-	if (m == NULL) {
-		m = (struct ctdb_marshall_buffer *)talloc_zero_size(
-			mem_ctx, offsetof(struct ctdb_marshall_buffer, data));
-		if (m == NULL) {
-			goto done;
-		}
-		m->db_id = db_id;
-	}
-
-	m_size = talloc_get_size(m);
-	r_size = talloc_get_size(r);
-
-	m2 = (struct ctdb_marshall_buffer *)talloc_realloc_size(
-		mem_ctx, m,  m_size + r_size);
-	if (m2 == NULL) {
-		talloc_free(m);
-		goto done;
-	}
-
-	memcpy(m_size + (uint8_t *)m2, r, r_size);
-
-	m2->count++;
-
-done:
-	talloc_free(r);
-	return m2;
-}
-
-/* we've finished marshalling, return a data blob with the marshalled records */
-static TDB_DATA db_ctdb_marshall_finish(struct ctdb_marshall_buffer *m)
-{
-	TDB_DATA data;
-	data.dptr = (uint8_t *)m;
-	data.dsize = talloc_get_size(m);
-	return data;
-}
-
-/* 
-   loop over a marshalling buffer 
-
-     - pass r==NULL to start
-     - loop the number of times indicated by m->count
-*/
-static struct ctdb_rec_data *db_ctdb_marshall_loop_next(struct ctdb_marshall_buffer *m, struct ctdb_rec_data *r,
-						     uint32_t *reqid,
-						     struct ctdb_ltdb_header *header,
-						     TDB_DATA *key, TDB_DATA *data)
-{
-	if (r == NULL) {
-		r = (struct ctdb_rec_data *)&m->data[0];
-	} else {
-		r = (struct ctdb_rec_data *)(r->length + (uint8_t *)r);
-	}
-
-	if (reqid != NULL) {
-		*reqid = r->reqid;
-	}
-
-	if (key != NULL) {
-		key->dptr   = &r->data[0];
-		key->dsize  = r->keylen;
-	}
-	if (data != NULL) {
-		data->dptr  = &r->data[r->keylen];
-		data->dsize = r->datalen;
-		if (header != NULL) {
-			data->dptr += sizeof(*header);
-			data->dsize -= sizeof(*header);
-		}
-	}
-
-	if (header != NULL) {
-		if (r->datalen < sizeof(*header)) {
-			return NULL;
-		}
-		*header = *(struct ctdb_ltdb_header *)&r->data[r->keylen];
-	}
-
-	return r;
-}
-
-/**
- * CTDB transaction destructor
- */
-static int db_ctdb_transaction_destructor(struct db_ctdb_transaction_handle *h)
-{
-	NTSTATUS status;
-
-	status = g_lock_unlock(h->ctx->lock_ctx, h->lock_name);
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(0, ("g_lock_unlock failed: %s\n", nt_errstr(status)));
-		return -1;
-	}
-	return 0;
-}
-
-/**
- * CTDB dbwrap API: transaction_start function
- * starts a transaction on a persistent database
- */
-static int db_ctdb_transaction_start(struct db_context *db)
-{
-	struct db_ctdb_transaction_handle *h;
-	NTSTATUS status;
-	struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-							struct db_ctdb_ctx);
-
-	if (!db->persistent) {
-		DEBUG(0,("transactions not supported on non-persistent database 0x%08x\n", 
-			 ctx->db_id));
-		return -1;
-	}
-
-	if (ctx->transaction) {
-		ctx->transaction->nesting++;
-		return 0;
-	}
-
-	h = talloc_zero(db, struct db_ctdb_transaction_handle);
-	if (h == NULL) {
-		DEBUG(0,(__location__ " oom for transaction handle\n"));		
-		return -1;
-	}
-
-	h->ctx = ctx;
-
-	h->lock_name = talloc_asprintf(h, "transaction_db_0x%08x",
-				       (unsigned int)ctx->db_id);
-	if (h->lock_name == NULL) {
-		DEBUG(0, ("talloc_asprintf failed\n"));
-		TALLOC_FREE(h);
-		return -1;
-	}
-
-	/*
-	 * Wait a day, i.e. forever...
-	 */
-	status = g_lock_lock(ctx->lock_ctx, h->lock_name, G_LOCK_WRITE,
-			     timeval_set(86400, 0));
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(0, ("g_lock_lock failed: %s\n", nt_errstr(status)));
-		TALLOC_FREE(h);
-		return -1;
-	}
-
-	talloc_set_destructor(h, db_ctdb_transaction_destructor);
-
-	ctx->transaction = h;
-
-	DEBUG(5,(__location__ " Started transaction on db 0x%08x\n", ctx->db_id));
-
-	return 0;
-}
-
-static bool pull_newest_from_marshall_buffer(struct ctdb_marshall_buffer *buf,
-					     TDB_DATA key,
-					     struct ctdb_ltdb_header *pheader,
-					     TALLOC_CTX *mem_ctx,
-					     TDB_DATA *pdata)
-{
-	struct ctdb_rec_data *rec = NULL;
-	struct ctdb_ltdb_header h;
-	bool found = false;
-	TDB_DATA data;
-	int i;
-
-	if (buf == NULL) {
-		return false;
-	}
-
-	ZERO_STRUCT(h);
-	ZERO_STRUCT(data);
-
-	/*
-	 * Walk the list of records written during this
-	 * transaction. If we want to read one we have already
-	 * written, return the last written sample. Thus we do not do
-	 * a "break;" for the first hit, this record might have been
-	 * overwritten later.
-	 */
-
-	for (i=0; i<buf->count; i++) {
-		TDB_DATA tkey, tdata;
-		uint32_t reqid;
-		struct ctdb_ltdb_header hdr;
-
-		ZERO_STRUCT(hdr);
-
-		rec = db_ctdb_marshall_loop_next(buf, rec, &reqid, &hdr, &tkey,
-						 &tdata);
-		if (rec == NULL) {
-			return false;
-		}
-
-		if (tdb_data_equal(key, tkey)) {
-			found = true;
-			data = tdata;
-			h = hdr;
-		}
-	}
-
-	if (!found) {
-		return false;
-	}
-
-	if (pdata != NULL) {
-		data.dptr = (uint8_t *)talloc_memdup(mem_ctx, data.dptr,
-						     data.dsize);
-		if ((data.dsize != 0) && (data.dptr == NULL)) {
-			return false;
-		}
-		*pdata = data;
-	}
-
-	if (pheader != NULL) {
-		*pheader = h;
-	}
-
-	return true;
-}
-
-/*
-  fetch a record inside a transaction
- */
-static int db_ctdb_transaction_fetch(struct db_ctdb_ctx *db, 
-				     TALLOC_CTX *mem_ctx, 
-				     TDB_DATA key, TDB_DATA *data)
-{
-	struct db_ctdb_transaction_handle *h = db->transaction;
-	NTSTATUS status;
-	bool found;
-
-	found = pull_newest_from_marshall_buffer(h->m_write, key, NULL,
-						 mem_ctx, data);
-	if (found) {
-		return 0;
-	}
-
-	status = db_ctdb_ltdb_fetch(h->ctx, key, NULL, mem_ctx, data);
-
-	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
-		*data = tdb_null;
-	} else if (!NT_STATUS_IS_OK(status)) {
-		return -1;
-	}
-
-	h->m_all = db_ctdb_marshall_add(h, h->m_all, h->ctx->db_id, 1, key,
-					NULL, *data);
-	if (h->m_all == NULL) {
-		DEBUG(0,(__location__ " Failed to add to marshalling "
-			 "record\n"));
-		data->dsize = 0;
-		talloc_free(data->dptr);
-		return -1;
-	}
-
-	return 0;
-}
-
-/**
- * Fetch a record from a persistent database
- * without record locking and without an active transaction.
- *
- * This just fetches from the local database copy.
- * Since the databases are kept in syc cluster-wide,
- * there is no point in doing a ctdb call to fetch the
- * record from the lmaster. It does even harm since migration
- * of records bump their RSN and hence render the persistent
- * database inconsistent.
- */
-static int db_ctdb_fetch_persistent(struct db_ctdb_ctx *db,
-				    TALLOC_CTX *mem_ctx,
-				    TDB_DATA key, TDB_DATA *data)
-{
-	NTSTATUS status;
-
-	status = db_ctdb_ltdb_fetch(db, key, NULL, mem_ctx, data);
-
-	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
-		*data = tdb_null;
-	} else if (!NT_STATUS_IS_OK(status)) {
-		return -1;
-	}
-
-	return 0;
-}
-
-static NTSTATUS db_ctdb_store_transaction(struct db_record *rec, TDB_DATA data, int flag);
-static NTSTATUS db_ctdb_delete_transaction(struct db_record *rec);
-
-static struct db_record *db_ctdb_fetch_locked_transaction(struct db_ctdb_ctx *ctx,
-							  TALLOC_CTX *mem_ctx,
-							  TDB_DATA key)
-{
-	struct db_record *result;
-	TDB_DATA ctdb_data;
-
-	if (!(result = talloc(mem_ctx, struct db_record))) {
-		DEBUG(0, ("talloc failed\n"));
-		return NULL;
-	}
-
-	result->private_data = ctx->transaction;
-
-	result->key.dsize = key.dsize;
-	result->key.dptr = (uint8 *)talloc_memdup(result, key.dptr, key.dsize);
-	if (result->key.dptr == NULL) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	result->store = db_ctdb_store_transaction;
-	result->delete_rec = db_ctdb_delete_transaction;
-
-	if (pull_newest_from_marshall_buffer(ctx->transaction->m_write, key,
-					     NULL, result, &result->value)) {
-		return result;
-	}
-
-	ctdb_data = tdb_fetch_compat(ctx->wtdb->tdb, key);
-	if (ctdb_data.dptr == NULL) {
-		/* create the record */
-		result->value = tdb_null;
-		return result;
-	}
-
-	result->value.dsize = ctdb_data.dsize - sizeof(struct ctdb_ltdb_header);
-	result->value.dptr = NULL;
-
-	if ((result->value.dsize != 0)
-	    && !(result->value.dptr = (uint8 *)talloc_memdup(
-			 result, ctdb_data.dptr + sizeof(struct ctdb_ltdb_header),
-			 result->value.dsize))) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-	}
-
-	SAFE_FREE(ctdb_data.dptr);
-
-	return result;
-}
-
-static int db_ctdb_record_destructor(struct db_record **recp)
-{
-	struct db_record *rec = talloc_get_type_abort(*recp, struct db_record);
-	struct db_ctdb_transaction_handle *h = talloc_get_type_abort(
-		rec->private_data, struct db_ctdb_transaction_handle);
-	int ret = h->ctx->db->transaction_commit(h->ctx->db);
-	if (ret != 0) {
-		DEBUG(0,(__location__ " transaction_commit failed\n"));
-	}
-	return 0;
-}
-
-/*
-  auto-create a transaction for persistent databases
- */
-static struct db_record *db_ctdb_fetch_locked_persistent(struct db_ctdb_ctx *ctx,
-							 TALLOC_CTX *mem_ctx,
-							 TDB_DATA key)
-{
-	int res;
-	struct db_record *rec, **recp;
-
-	res = db_ctdb_transaction_start(ctx->db);
-	if (res == -1) {
-		return NULL;
-	}
-
-	rec = db_ctdb_fetch_locked_transaction(ctx, mem_ctx, key);
-	if (rec == NULL) {
-		ctx->db->transaction_cancel(ctx->db);		
-		return NULL;
-	}
-
-	/* destroy this transaction when we release the lock */
-	recp = talloc(rec, struct db_record *);
-	if (recp == NULL) {
-		ctx->db->transaction_cancel(ctx->db);
-		talloc_free(rec);
-		return NULL;
-	}
-	*recp = rec;
-	talloc_set_destructor(recp, db_ctdb_record_destructor);
-	return rec;
-}
-
-
-/*
-  stores a record inside a transaction
- */
-static NTSTATUS db_ctdb_transaction_store(struct db_ctdb_transaction_handle *h,
-					  TDB_DATA key, TDB_DATA data)
-{
-	TALLOC_CTX *tmp_ctx = talloc_new(h);
-	TDB_DATA rec;
-	struct ctdb_ltdb_header header;
-
-	ZERO_STRUCT(header);
-
-	/* we need the header so we can update the RSN */
-
-	if (!pull_newest_from_marshall_buffer(h->m_write, key, &header,
-					      NULL, NULL)) {
-
-		rec = tdb_fetch_compat(h->ctx->wtdb->tdb, key);
-
-		if (rec.dptr != NULL) {
-			memcpy(&header, rec.dptr,
-			       sizeof(struct ctdb_ltdb_header));
-			rec.dsize -= sizeof(struct ctdb_ltdb_header);
-
-			/*
-			 * a special case, we are writing the same
-			 * data that is there now
-			 */
-			if (data.dsize == rec.dsize &&
-			    memcmp(data.dptr,
-				   rec.dptr + sizeof(struct ctdb_ltdb_header),
-				   data.dsize) == 0) {
-				SAFE_FREE(rec.dptr);
-				talloc_free(tmp_ctx);
-				return NT_STATUS_OK;
-			}
-		}
-		SAFE_FREE(rec.dptr);
-	}
-
-	header.dmaster = get_my_vnn();
-	header.rsn++;
-
-	h->m_all = db_ctdb_marshall_add(h, h->m_all, h->ctx->db_id, 0, key,
-					NULL, data);
-	if (h->m_all == NULL) {
-		DEBUG(0,(__location__ " Failed to add to marshalling "
-			 "record\n"));
-		talloc_free(tmp_ctx);
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	h->m_write = db_ctdb_marshall_add(h, h->m_write, h->ctx->db_id, 0, key, &header, data);
-	if (h->m_write == NULL) {
-		DEBUG(0,(__location__ " Failed to add to marshalling record\n"));
-		talloc_free(tmp_ctx);
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	talloc_free(tmp_ctx);
-	return NT_STATUS_OK;
-}
-
-
-/* 
-   a record store inside a transaction
- */
-static NTSTATUS db_ctdb_store_transaction(struct db_record *rec, TDB_DATA data, int flag)
-{
-	struct db_ctdb_transaction_handle *h = talloc_get_type_abort(
-		rec->private_data, struct db_ctdb_transaction_handle);
-	NTSTATUS status;
-
-	status = db_ctdb_transaction_store(h, rec->key, data);
-	return status;
-}
-
-/* 
-   a record delete inside a transaction
- */
-static NTSTATUS db_ctdb_delete_transaction(struct db_record *rec)
-{
-	struct db_ctdb_transaction_handle *h = talloc_get_type_abort(
-		rec->private_data, struct db_ctdb_transaction_handle);
-	NTSTATUS status;
-
-	status =  db_ctdb_transaction_store(h, rec->key, tdb_null);
-	return status;
-}
-
-/**
- * Fetch the db sequence number of a persistent db directly from the db.
- */
-static NTSTATUS db_ctdb_fetch_db_seqnum_from_db(struct db_ctdb_ctx *db,
-						uint64_t *seqnum)
-{
-	NTSTATUS status;
-	const char *keyname = CTDB_DB_SEQNUM_KEY;
-	TDB_DATA key;
-	TDB_DATA data;
-	struct ctdb_ltdb_header header;
-	TALLOC_CTX *mem_ctx = talloc_stackframe();
-
-	if (seqnum == NULL) {
-		return NT_STATUS_INVALID_PARAMETER;
-	}
-
-	key = string_term_tdb_data(keyname);
-
-	status = db_ctdb_ltdb_fetch(db, key, &header, mem_ctx, &data);
-	if (!NT_STATUS_IS_OK(status) &&
-	    !NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND))
-	{
-		goto done;
-	}
-
-	status = NT_STATUS_OK;
-
-	if (data.dsize != sizeof(uint64_t)) {
-		*seqnum = 0;
-		goto done;
-	}
-
-	*seqnum = *(uint64_t *)data.dptr;
-
-done:
-	TALLOC_FREE(mem_ctx);
-	return status;
-}
-
-/**
- * Store the database sequence number inside a transaction.
- */
-static NTSTATUS db_ctdb_store_db_seqnum(struct db_ctdb_transaction_handle *h,
-					uint64_t seqnum)
-{
-	NTSTATUS status;
-	const char *keyname = CTDB_DB_SEQNUM_KEY;
-	TDB_DATA key;
-	TDB_DATA data;
-
-	key = string_term_tdb_data(keyname);
-
-	data.dptr = (uint8_t *)&seqnum;
-	data.dsize = sizeof(uint64_t);
-
-	status = db_ctdb_transaction_store(h, key, data);
-
-	return status;
-}
-
-/*
-  commit a transaction
- */
-static int db_ctdb_transaction_commit(struct db_context *db)
-{
-	struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-							struct db_ctdb_ctx);
-	NTSTATUS rets;
-	int status;
-	struct db_ctdb_transaction_handle *h = ctx->transaction;
-	uint64_t old_seqnum, new_seqnum;
-	int ret;
-
-	if (h == NULL) {
-		DEBUG(0,(__location__ " transaction commit with no open transaction on db 0x%08x\n", ctx->db_id));
-		return -1;
-	}
-
-	if (h->nested_cancel) {
-		db->transaction_cancel(db);
-		DEBUG(5,(__location__ " Failed transaction commit after nested cancel\n"));
-		return -1;
-	}
-
-	if (h->nesting != 0) {
-		h->nesting--;
-		return 0;
-	}
-
-	if (h->m_write == NULL) {
-		/*
-		 * No changes were made, so don't change the seqnum,
-		 * don't push to other node, just exit with success.
-		 */
-		ret = 0;
-		goto done;
-	}
-
-	DEBUG(5,(__location__ " Commit transaction on db 0x%08x\n", ctx->db_id));
-
-	/*
-	 * As the last db action before committing, bump the database sequence
-	 * number. Note that this undoes all changes to the seqnum records
-	 * performed under the transaction. This record is not meant to be
-	 * modified by user interaction. It is for internal use only...
-	 */
-	rets = db_ctdb_fetch_db_seqnum_from_db(ctx, &old_seqnum);
-	if (!NT_STATUS_IS_OK(rets)) {
-		DEBUG(1, (__location__ " failed to fetch the db sequence number "
-			  "in transaction commit on db 0x%08x\n", ctx->db_id));
-		ret = -1;
-		goto done;
-	}
-
-	new_seqnum = old_seqnum + 1;
-
-	rets = db_ctdb_store_db_seqnum(h, new_seqnum);
-	if (!NT_STATUS_IS_OK(rets)) {
-		DEBUG(1, (__location__ "failed to store the db sequence number "
-			  " in transaction commit on db 0x%08x\n", ctx->db_id));
-		ret = -1;
-		goto done;
-	}
-
-again:
-	/* tell ctdbd to commit to the other nodes */
-	rets = ctdbd_control_local(messaging_ctdbd_connection(),
-				   CTDB_CONTROL_TRANS3_COMMIT,
-				   h->ctx->db_id, 0,
-				   db_ctdb_marshall_finish(h->m_write),
-				   NULL, NULL, &status);
-	if (!NT_STATUS_IS_OK(rets) || status != 0) {
-		/*
-		 * The TRANS3_COMMIT control should only possibly fail when a
-		 * recovery has been running concurrently. In any case, the db
-		 * will be the same on all nodes, either the new copy or the
-		 * old copy.  This can be detected by comparing the old and new
-		 * local sequence numbers.
-		 */
-		rets = db_ctdb_fetch_db_seqnum_from_db(ctx, &new_seqnum);
-		if (!NT_STATUS_IS_OK(rets)) {
-			DEBUG(1, (__location__ " failed to refetch db sequence "
-				  "number after failed TRANS3_COMMIT\n"));
-			ret = -1;
-			goto done;
-		}
-
-		if (new_seqnum == old_seqnum) {
-			/* Recovery prevented all our changes: retry. */
-			goto again;
-		} else if (new_seqnum != (old_seqnum + 1)) {
-			DEBUG(0, (__location__ " ERROR: new_seqnum[%lu] != "
-				  "old_seqnum[%lu] + (0 or 1) after failed "
-				  "TRANS3_COMMIT - this should not happen!\n",
-				  (unsigned long)new_seqnum,
-				  (unsigned long)old_seqnum));
-			ret = -1;
-			goto done;
-		}
-		/*
-		 * Recovery propagated our changes to all nodes, completing
-		 * our commit for us - succeed.
-		 */
-	}
-
-	ret = 0;
-
-done:
-	h->ctx->transaction = NULL;
-	talloc_free(h);
-	return ret;
-}
-
-
-/*
-  cancel a transaction
- */
-static int db_ctdb_transaction_cancel(struct db_context *db)
-{
-	struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-							struct db_ctdb_ctx);
-	struct db_ctdb_transaction_handle *h = ctx->transaction;
-
-	if (h == NULL) {
-		DEBUG(0,(__location__ " transaction cancel with no open transaction on db 0x%08x\n", ctx->db_id));
-		return -1;
-	}
-
-	if (h->nesting != 0) {
-		h->nesting--;
-		h->nested_cancel = true;
-		return 0;
-	}
-
-	DEBUG(5,(__location__ " Cancel transaction on db 0x%08x\n", ctx->db_id));
-
-	ctx->transaction = NULL;
-	talloc_free(h);
-	return 0;
-}
-
-
-static NTSTATUS db_ctdb_store(struct db_record *rec, TDB_DATA data, int flag)
-{
-	struct db_ctdb_rec *crec = talloc_get_type_abort(
-		rec->private_data, struct db_ctdb_rec);
-
-	return db_ctdb_ltdb_store(crec->ctdb_ctx, rec->key, &(crec->header), data);
-}
-
-
-
-#ifdef HAVE_CTDB_CONTROL_SCHEDULE_FOR_DELETION_DECL
-static NTSTATUS db_ctdb_send_schedule_for_deletion(struct db_record *rec)
-{
-	NTSTATUS status;
-	struct ctdb_control_schedule_for_deletion *dd;
-	TDB_DATA indata;
-	int cstatus;
-	struct db_ctdb_rec *crec = talloc_get_type_abort(
-		rec->private_data, struct db_ctdb_rec);
-
-	indata.dsize = offsetof(struct ctdb_control_schedule_for_deletion, key) + rec->key.dsize;
-	indata.dptr = talloc_zero_array(crec, uint8_t, indata.dsize);
-	if (indata.dptr == NULL) {
-		DEBUG(0, (__location__ " talloc failed!\n"));
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	dd = (struct ctdb_control_schedule_for_deletion *)(void *)indata.dptr;
-	dd->db_id = crec->ctdb_ctx->db_id;
-	dd->hdr = crec->header;
-	dd->keylen = rec->key.dsize;
-	memcpy(dd->key, rec->key.dptr, rec->key.dsize);
-
-	status = ctdbd_control_local(messaging_ctdbd_connection(),
-				     CTDB_CONTROL_SCHEDULE_FOR_DELETION,
-				     crec->ctdb_ctx->db_id,
-				     CTDB_CTRL_FLAG_NOREPLY, /* flags */
-				     indata,
-				     NULL, /* outdata */
-				     NULL, /* errmsg */
-				     &cstatus);
-	talloc_free(indata.dptr);
-
-	if (!NT_STATUS_IS_OK(status) || cstatus != 0) {
-		DEBUG(1, (__location__ " Error sending local control "
-			  "SCHEDULE_FOR_DELETION: %s, cstatus = %d\n",
-			  nt_errstr(status), cstatus));
-		if (NT_STATUS_IS_OK(status)) {
-			status = NT_STATUS_UNSUCCESSFUL;
-		}
-	}
-
-	return status;
-}
-#endif
-
-static NTSTATUS db_ctdb_delete(struct db_record *rec)
-{
-	TDB_DATA data;
-	NTSTATUS status;
-
-	/*
-	 * We have to store the header with empty data. TODO: Fix the
-	 * tdb-level cleanup
-	 */
-
-	ZERO_STRUCT(data);
-
-	status = db_ctdb_store(rec, data, 0);
-	if (!NT_STATUS_IS_OK(status)) {
-		return status;
-	}
-
-#ifdef HAVE_CTDB_CONTROL_SCHEDULE_FOR_DELETION_DECL
-	status = db_ctdb_send_schedule_for_deletion(rec);
-#endif
-
-	return status;
-}
-
-static int db_ctdb_record_destr(struct db_record* data)
-{
-	struct db_ctdb_rec *crec = talloc_get_type_abort(
-		data->private_data, struct db_ctdb_rec);
-	int threshold;
-
-	DEBUG(10, (DEBUGLEVEL > 10
-		   ? "Unlocking db %u key %s\n"
-		   : "Unlocking db %u key %.20s\n",
-		   (int)crec->ctdb_ctx->db_id,
-		   hex_encode_talloc(data, (unsigned char *)data->key.dptr,
-			      data->key.dsize)));
-
-	tdb_chainunlock(crec->ctdb_ctx->wtdb->tdb, data->key);
-
-	threshold = lp_ctdb_locktime_warn_threshold();
-	if (threshold != 0) {
-		double timediff = timeval_elapsed(&crec->lock_time);
-		if ((timediff * 1000) > threshold) {
-			DEBUG(0, ("Held tdb lock %f seconds\n", timediff));
-		}
-	}
-
-	return 0;
-}
-
-static struct db_record *fetch_locked_internal(struct db_ctdb_ctx *ctx,
-					       TALLOC_CTX *mem_ctx,
-					       TDB_DATA key)
-{
-	struct db_record *result;
-	struct db_ctdb_rec *crec;
-	NTSTATUS status;
-	TDB_DATA ctdb_data;
-	int migrate_attempts = 0;
-
-	if (!(result = talloc(mem_ctx, struct db_record))) {
-		DEBUG(0, ("talloc failed\n"));
-		return NULL;
-	}
-
-	if (!(crec = talloc_zero(result, struct db_ctdb_rec))) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	result->private_data = (void *)crec;
-	crec->ctdb_ctx = ctx;
-
-	result->key.dsize = key.dsize;
-	result->key.dptr = (uint8 *)talloc_memdup(result, key.dptr, key.dsize);
-	if (result->key.dptr == NULL) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	/*
-	 * Do a blocking lock on the record
-	 */
-again:
-
-	if (DEBUGLEVEL >= 10) {
-		char *keystr = hex_encode_talloc(result, key.dptr, key.dsize);
-		DEBUG(10, (DEBUGLEVEL > 10
-			   ? "Locking db %u key %s\n"
-			   : "Locking db %u key %.20s\n",
-			   (int)crec->ctdb_ctx->db_id, keystr));
-		TALLOC_FREE(keystr);
-	}
-
-	if (tdb_chainlock(ctx->wtdb->tdb, key) != 0) {
-		DEBUG(3, ("tdb_chainlock failed\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	result->store = db_ctdb_store;
-	result->delete_rec = db_ctdb_delete;
-	talloc_set_destructor(result, db_ctdb_record_destr);
-
-	ctdb_data = tdb_fetch_compat(ctx->wtdb->tdb, key);
-
-	/*
-	 * See if we have a valid record and we are the dmaster. If so, we can
-	 * take the shortcut and just return it.
-	 */
-
-	if ((ctdb_data.dptr == NULL) ||
-	    (ctdb_data.dsize < sizeof(struct ctdb_ltdb_header)) ||
-	    ((struct ctdb_ltdb_header *)ctdb_data.dptr)->dmaster != get_my_vnn()
-#if 0
-	    || (random() % 2 != 0)
-#endif
-) {
-		SAFE_FREE(ctdb_data.dptr);
-		tdb_chainunlock(ctx->wtdb->tdb, key);
-		talloc_set_destructor(result, NULL);
-
-		migrate_attempts += 1;
-
-		DEBUG(10, ("ctdb_data.dptr = %p, dmaster = %u (%u)\n",
-			   ctdb_data.dptr, ctdb_data.dptr ?
-			   ((struct ctdb_ltdb_header *)ctdb_data.dptr)->dmaster : -1,
-			   get_my_vnn()));
-
-		status = ctdbd_migrate(messaging_ctdbd_connection(), ctx->db_id,
-				       key);
-		if (!NT_STATUS_IS_OK(status)) {
-			DEBUG(5, ("ctdb_migrate failed: %s\n",
-				  nt_errstr(status)));
-			TALLOC_FREE(result);
-			return NULL;
-		}
-		/* now its migrated, try again */
-		goto again;
-	}
-
-	if (migrate_attempts > 10) {
-		DEBUG(0, ("db_ctdb_fetch_locked needed %d attempts\n",
-			  migrate_attempts));
-	}
-
-	GetTimeOfDay(&crec->lock_time);
-
-	memcpy(&crec->header, ctdb_data.dptr, sizeof(crec->header));
-
-	result->value.dsize = ctdb_data.dsize - sizeof(crec->header);
-	result->value.dptr = NULL;
-
-	if ((result->value.dsize != 0)
-	    && !(result->value.dptr = (uint8 *)talloc_memdup(
-			 result, ctdb_data.dptr + sizeof(crec->header),
-			 result->value.dsize))) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-	}
-
-	SAFE_FREE(ctdb_data.dptr);
-
-	return result;
-}
-
-static struct db_record *db_ctdb_fetch_locked(struct db_context *db,
-					      TALLOC_CTX *mem_ctx,
-					      TDB_DATA key)
-{
-	struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-							struct db_ctdb_ctx);
-
-	if (ctx->transaction != NULL) {
-		return db_ctdb_fetch_locked_transaction(ctx, mem_ctx, key);
-	}
-
-	if (db->persistent) {
-		return db_ctdb_fetch_locked_persistent(ctx, mem_ctx, key);
-	}
-
-	return fetch_locked_internal(ctx, mem_ctx, key);
-}
-
-/*
-  fetch (unlocked, no migration) operation on ctdb
- */
-static int db_ctdb_fetch(struct db_context *db, TALLOC_CTX *mem_ctx,
-			 TDB_DATA key, TDB_DATA *data)
-{
-	struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-							struct db_ctdb_ctx);
-	NTSTATUS status;
-	TDB_DATA ctdb_data;
-
-	if (ctx->transaction) {
-		return db_ctdb_transaction_fetch(ctx, mem_ctx, key, data);
-	}
-
-	if (db->persistent) {
-		return db_ctdb_fetch_persistent(ctx, mem_ctx, key, data);
-	}
-
-	/* try a direct fetch */
-	ctdb_data = tdb_fetch_compat(ctx->wtdb->tdb, key);
-
-	/*
-	 * See if we have a valid record and we are the dmaster. If so, we can
-	 * take the shortcut and just return it.
-	 * we bypass the dmaster check for persistent databases
-	 */
-	if ((ctdb_data.dptr != NULL) &&
-	    (ctdb_data.dsize >= sizeof(struct ctdb_ltdb_header)) &&
-	    ((struct ctdb_ltdb_header *)ctdb_data.dptr)->dmaster == get_my_vnn())
-	{
-		/* we are the dmaster - avoid the ctdb protocol op */
-
-		data->dsize = ctdb_data.dsize - sizeof(struct ctdb_ltdb_header);
-		if (data->dsize == 0) {
-			SAFE_FREE(ctdb_data.dptr);
-			data->dptr = NULL;
-			return 0;
-		}
-
-		data->dptr = (uint8 *)talloc_memdup(
-			mem_ctx, ctdb_data.dptr+sizeof(struct ctdb_ltdb_header),
-			data->dsize);
-
-		SAFE_FREE(ctdb_data.dptr);
-
-		if (data->dptr == NULL) {
-			return -1;
-		}
-		return 0;
-	}
-
-	SAFE_FREE(ctdb_data.dptr);
-
-	/* we weren't able to get it locally - ask ctdb to fetch it for us */
-	status = ctdbd_fetch(messaging_ctdbd_connection(), ctx->db_id, key,
-			     mem_ctx, data);
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(5, ("ctdbd_fetch failed: %s\n", nt_errstr(status)));
-		return -1;
-	}
-
-	return 0;
-}
-
-struct traverse_state {
-	struct db_context *db;
-	int (*fn)(struct db_record *rec, void *private_data);
-	void *private_data;
-};
-
-static void traverse_callback(TDB_DATA key, TDB_DATA data, void *private_data)
-{
-	struct traverse_state *state = (struct traverse_state *)private_data;
-	struct db_record *rec;
-	TALLOC_CTX *tmp_ctx = talloc_new(state->db);
-	/* we have to give them a locked record to prevent races */
-	rec = db_ctdb_fetch_locked(state->db, tmp_ctx, key);
-	if (rec && rec->value.dsize > 0) {
-		state->fn(rec, state->private_data);
-	}
-	talloc_free(tmp_ctx);
-}
-
-static int traverse_persistent_callback(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf,
-					void *private_data)
-{
-	struct traverse_state *state = (struct traverse_state *)private_data;
-	struct db_record *rec;
-	TALLOC_CTX *tmp_ctx = talloc_new(state->db);
-	int ret = 0;
-	/* we have to give them a locked record to prevent races */
-	rec = db_ctdb_fetch_locked(state->db, tmp_ctx, kbuf);
-	if (rec && rec->value.dsize > 0) {
-		ret = state->fn(rec, state->private_data);
-	}
-	talloc_free(tmp_ctx);
-	return ret;
-}
-
-static int db_ctdb_traverse(struct db_context *db,
-			    int (*fn)(struct db_record *rec,
-				      void *private_data),
-			    void *private_data)
-{
-        struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-                                                        struct db_ctdb_ctx);
-	struct traverse_state state;
-
-	state.db = db;
-	state.fn = fn;
-	state.private_data = private_data;
-
-	if (db->persistent) {
-		/* for persistent databases we don't need to do a ctdb traverse,
-		   we can do a faster local traverse */
-		return tdb_traverse(ctx->wtdb->tdb, traverse_persistent_callback, &state);
-	}
-
-
-	ctdbd_traverse(ctx->db_id, traverse_callback, &state);
-	return 0;
-}
-
-static NTSTATUS db_ctdb_store_deny(struct db_record *rec, TDB_DATA data, int flag)
-{
-	return NT_STATUS_MEDIA_WRITE_PROTECTED;
-}
-
-static NTSTATUS db_ctdb_delete_deny(struct db_record *rec)
-{
-	return NT_STATUS_MEDIA_WRITE_PROTECTED;
-}
-
-static void traverse_read_callback(TDB_DATA key, TDB_DATA data, void *private_data)
-{
-	struct traverse_state *state = (struct traverse_state *)private_data;
-	struct db_record rec;
-	rec.key = key;
-	rec.value = data;
-	rec.store = db_ctdb_store_deny;
-	rec.delete_rec = db_ctdb_delete_deny;
-	rec.private_data = state->db;
-	state->fn(&rec, state->private_data);
-}
-
-static int traverse_persistent_callback_read(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf,
-					void *private_data)
-{
-	struct traverse_state *state = (struct traverse_state *)private_data;
-	struct db_record rec;
-	rec.key = kbuf;
-	rec.value = dbuf;
-	rec.store = db_ctdb_store_deny;
-	rec.delete_rec = db_ctdb_delete_deny;
-	rec.private_data = state->db;
-
-	if (rec.value.dsize <= sizeof(struct ctdb_ltdb_header)) {
-		/* a deleted record */
-		return 0;
-	}
-	rec.value.dsize -= sizeof(struct ctdb_ltdb_header);
-	rec.value.dptr += sizeof(struct ctdb_ltdb_header);
-
-	return state->fn(&rec, state->private_data);
-}
-
-static int db_ctdb_traverse_read(struct db_context *db,
-				 int (*fn)(struct db_record *rec,
-					   void *private_data),
-				 void *private_data)
-{
-        struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-                                                        struct db_ctdb_ctx);
-	struct traverse_state state;
-
-	state.db = db;
-	state.fn = fn;
-	state.private_data = private_data;
-
-	if (db->persistent) {
-		/* for persistent databases we don't need to do a ctdb traverse,
-		   we can do a faster local traverse */
-		return tdb_traverse_read(ctx->wtdb->tdb, traverse_persistent_callback_read, &state);
-	}
-
-	ctdbd_traverse(ctx->db_id, traverse_read_callback, &state);
-	return 0;
-}
-
-static int db_ctdb_get_seqnum(struct db_context *db)
-{
-        struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-                                                        struct db_ctdb_ctx);
-	return tdb_get_seqnum(ctx->wtdb->tdb);
-}
-
-static int db_ctdb_get_flags(struct db_context *db)
-{
-        struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
-                                                        struct db_ctdb_ctx);
-	return tdb_get_flags(ctx->wtdb->tdb);
-}
-
-struct db_context *db_open_ctdb(TALLOC_CTX *mem_ctx,
-				const char *name,
-				int hash_size, int tdb_flags,
-				int open_flags, mode_t mode)
-{
-	struct db_context *result;
-	struct db_ctdb_ctx *db_ctdb;
-	char *db_path;
-	struct ctdbd_connection *conn;
-
-	if (!lp_clustering()) {
-		DEBUG(10, ("Clustering disabled -- no ctdb\n"));
-		return NULL;
-	}
-
-	if (!(result = talloc_zero(mem_ctx, struct db_context))) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	if (!(db_ctdb = talloc(result, struct db_ctdb_ctx))) {
-		DEBUG(0, ("talloc failed\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	db_ctdb->transaction = NULL;
-	db_ctdb->db = result;
-
-	conn = messaging_ctdbd_connection();
-	if (conn == NULL) {
-		DEBUG(1, ("Could not connect to ctdb\n"));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	if (!NT_STATUS_IS_OK(ctdbd_db_attach(conn, name, &db_ctdb->db_id, tdb_flags))) {
-		DEBUG(0, ("ctdbd_db_attach failed for %s\n", name));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-
-	db_path = ctdbd_dbpath(conn, db_ctdb, db_ctdb->db_id);
-
-	result->persistent = ((tdb_flags & TDB_CLEAR_IF_FIRST) == 0);
-
-	/* only pass through specific flags */
-	tdb_flags &= TDB_SEQNUM;
-
-	/* honor permissions if user has specified O_CREAT */
-	if (open_flags & O_CREAT) {
-		chmod(db_path, mode);
-	}
-
-	db_ctdb->wtdb = tdb_wrap_open(db_ctdb, db_path, hash_size, tdb_flags, O_RDWR, 0);
-	if (db_ctdb->wtdb == NULL) {
-		DEBUG(0, ("Could not open tdb %s: %s\n", db_path, strerror(errno)));
-		TALLOC_FREE(result);
-		return NULL;
-	}
-	talloc_free(db_path);
-
-	if (result->persistent) {
-		db_ctdb->lock_ctx = g_lock_ctx_init(db_ctdb,
-						    ctdb_conn_msg_ctx(conn));
-		if (db_ctdb->lock_ctx == NULL) {
-			DEBUG(0, ("g_lock_ctx_init failed\n"));
-			TALLOC_FREE(result);
-			return NULL;
-		}
-	}
-
-	result->private_data = (void *)db_ctdb;
-	result->fetch_locked = db_ctdb_fetch_locked;
-	result->fetch = db_ctdb_fetch;
-	result->traverse = db_ctdb_traverse;
-	result->traverse_read = db_ctdb_traverse_read;
-	result->get_seqnum = db_ctdb_get_seqnum;
-	result->get_flags = db_ctdb_get_flags;
-	result->transaction_start = db_ctdb_transaction_start;
-	result->transaction_commit = db_ctdb_transaction_commit;
-	result->transaction_cancel = db_ctdb_transaction_cancel;
-
-	DEBUG(3,("db_open_ctdb: opened database '%s' with dbid 0x%x\n",
-		 name, db_ctdb->db_id));
-
-	return result;
-}
-#endif