dbwrap: Remove unused dbwrap_cache

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

3 files changed, 1 insertions, 256 deletions

diff --git a/lib/dbwrap/dbwrap_cache.c b/lib/dbwrap/dbwrap_cache.c
deleted file mode 100644
index e4cee558484..00000000000
--- a/lib/dbwrap/dbwrap_cache.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
-   Unix SMB/CIFS implementation.
-   Cache db contents for parse_record based on seqnum
-   Copyright (C) Volker Lendecke 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/>.
-*/
-
-#include "replace.h"
-#include "lib/param/loadparm.h"
-#include "lib/dbwrap/dbwrap_cache.h"
-#include "lib/dbwrap/dbwrap_private.h"
-#include "lib/dbwrap/dbwrap_rbt.h"
-#include "lib/util/talloc_stack.h"
-
-struct db_cache_ctx {
-	int seqnum;
-	struct db_context *backing;
-	struct db_context *positive;
-	struct db_context *negative;
-};
-
-static bool dbwrap_cache_validate(struct db_cache_ctx *ctx)
-{
-	int backing_seqnum;
-
-	backing_seqnum = dbwrap_get_seqnum(ctx->backing);
-	if (backing_seqnum == ctx->seqnum) {
-		return true;
-	}
-
-	TALLOC_FREE(ctx->positive);
-	ctx->positive = db_open_rbt(ctx);
-	if (ctx->positive == NULL) {
-		return false;
-	}
-
-	TALLOC_FREE(ctx->negative);
-	ctx->negative = db_open_rbt(ctx);
-	if (ctx->negative == NULL) {
-		return false;
-	}
-
-	ctx->seqnum = backing_seqnum;
-	return true;
-}
-
-static NTSTATUS dbwrap_cache_parse_record(
-	struct db_context *db, TDB_DATA key,
-	void (*parser)(TDB_DATA key, TDB_DATA data, void *private_data),
-	void *private_data)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	TDB_DATA value;
-	NTSTATUS status;
-
-	if (!dbwrap_cache_validate(ctx)) {
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	if (dbwrap_exists(ctx->negative, key)) {
-		return NT_STATUS_NOT_FOUND;
-	}
-	status = dbwrap_parse_record(ctx->positive, key, parser, private_data);
-	if (NT_STATUS_IS_OK(status)) {
-		return status;
-	}
-
-	status = dbwrap_fetch(ctx->backing, talloc_tos(), key, &value);
-
-	if (NT_STATUS_IS_OK(status)) {
-		dbwrap_store(ctx->positive, key, value, 0);
-		parser(key, value, private_data);
-		TALLOC_FREE(value.dptr);
-		return NT_STATUS_OK;
-	}
-
-	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
-		char c = '\0';
-		value.dptr = (uint8_t *)&c;
-		value.dsize = sizeof(c);
-		dbwrap_store(ctx->negative, key, value, 0);
-		return NT_STATUS_NOT_FOUND;
-	}
-	return status;
-}
-
-static struct db_record *dbwrap_cache_fetch_locked(
-	struct db_context *db, TALLOC_CTX *mem_ctx, TDB_DATA key)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	return dbwrap_fetch_locked(ctx->backing, mem_ctx, key);
-}
-
-static int dbwrap_cache_traverse(struct db_context *db,
-				 int (*f)(struct db_record *rec,
-					  void *private_data),
-				 void *private_data)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	NTSTATUS status;
-	int ret;
-	status = dbwrap_traverse(ctx->backing, f, private_data, &ret);
-	if (!NT_STATUS_IS_OK(status)) {
-		return -1;
-	}
-	return ret;
-}
-
-static int dbwrap_cache_traverse_read(struct db_context *db,
-				      int (*f)(struct db_record *rec,
-					       void *private_data),
-				      void *private_data)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	NTSTATUS status;
-	int ret;
-	status = dbwrap_traverse_read(ctx->backing, f, private_data, &ret);
-	if (!NT_STATUS_IS_OK(status)) {
-		return -1;
-	}
-	return ret;
-}
-
-static int dbwrap_cache_get_seqnum(struct db_context *db)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	return dbwrap_get_seqnum(ctx->backing);
-}
-
-static int dbwrap_cache_transaction_start(struct db_context *db)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	return dbwrap_transaction_start(ctx->backing);
-}
-
-static int dbwrap_cache_transaction_commit(struct db_context *db)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	return dbwrap_transaction_commit(ctx->backing);
-}
-
-static int dbwrap_cache_transaction_cancel(struct db_context *db)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-	return dbwrap_transaction_cancel(ctx->backing);
-}
-
-static int dbwrap_cache_exists(struct db_context *db, TDB_DATA key)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-
-	if (ctx->positive && dbwrap_exists(ctx->positive, key)) {
-		return true;
-	}
-	if (ctx->negative && dbwrap_exists(ctx->negative, key)) {
-		return false;
-	}
-	return dbwrap_exists(ctx->backing, key);
-}
-
-static size_t dbwrap_cache_id(struct db_context *db, uint8_t *id,
-			      size_t idlen)
-{
-	struct db_cache_ctx *ctx = talloc_get_type_abort(
-		db->private_data, struct db_cache_ctx);
-
-	return dbwrap_db_id(ctx->backing, id, idlen);
-}
-
-struct db_context *db_open_cache(TALLOC_CTX *mem_ctx,
-				 struct db_context *backing)
-{
-	struct db_context *db;
-	struct db_cache_ctx *ctx;
-
-	db = talloc_zero(mem_ctx, struct db_context);
-	if (db == NULL) {
-		return NULL;
-	}
-	ctx = talloc_zero(db, struct db_cache_ctx);
-	if (ctx == NULL) {
-		TALLOC_FREE(db);
-		return NULL;
-	}
-
-	ctx->seqnum = -1;
-	ctx->backing = talloc_move(ctx, &backing);
-	db->private_data = ctx;
-	if (!dbwrap_cache_validate(ctx)) {
-		TALLOC_FREE(db);
-		return NULL;
-	}
-
-	db->fetch_locked = dbwrap_cache_fetch_locked;
-	db->traverse = dbwrap_cache_traverse;
-	db->traverse_read = dbwrap_cache_traverse_read;
-	db->get_seqnum = dbwrap_cache_get_seqnum;
-	db->transaction_start = dbwrap_cache_transaction_start;
-	db->transaction_commit = dbwrap_cache_transaction_commit;
-	db->transaction_cancel = dbwrap_cache_transaction_cancel;
-	db->parse_record = dbwrap_cache_parse_record;
-	db->exists = dbwrap_cache_exists;
-	db->id = dbwrap_cache_id;
-	db->name = dbwrap_name(ctx->backing);
-	return db;
-}
diff --git a/lib/dbwrap/dbwrap_cache.h b/lib/dbwrap/dbwrap_cache.h
deleted file mode 100644
index e69d58efce6..00000000000
--- a/lib/dbwrap/dbwrap_cache.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
-   Unix SMB/CIFS implementation.
-   Database interface wrapper around ctdbd
-   Copyright (C) Volker Lendecke 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 __DBWRAP_CACHE_H__
-#define __DBWRAP_CACHE_H__
-
-#include "dbwrap.h"
-
-struct db_context *db_open_cache(TALLOC_CTX *mem_ctx,
-				 struct db_context *backing);
-
-#endif /* __DBWRAP_CACHE_H__ */
diff --git a/lib/dbwrap/wscript_build b/lib/dbwrap/wscript_build
index 83e5895a7b1..e6e9d5e4384 100644
--- a/lib/dbwrap/wscript_build
+++ b/lib/dbwrap/wscript_build
@@ -1,4 +1,4 @@
-SRC = '''dbwrap.c dbwrap_util.c dbwrap_rbt.c dbwrap_cache.c dbwrap_tdb.c
+SRC = '''dbwrap.c dbwrap_util.c dbwrap_rbt.c dbwrap_tdb.c
          dbwrap_local_open.c'''
 DEPS= '''samba-util util_tdb samba-errors tdb tdb-wrap samba-hostconfig tevent tevent-util'''