dbwrap: dbwrap_hash_size().

Implemented for ntdb and tdb; falls back to 0 for others.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

7 files changed, 12 insertions, 0 deletions

diff --git a/lib/dbwrap/dbwrap.c b/lib/dbwrap/dbwrap.c
index f898819b9d..4c0160a474 100644
--- a/lib/dbwrap/dbwrap.c
+++ b/lib/dbwrap/dbwrap.c
@@ -407,6 +407,11 @@ int dbwrap_wipe(struct db_context *db)
 	return db->wipe(db);
 }
 
+int dbwrap_hash_size(struct db_context *db)
+{
+	return db->hash_size;
+}
+
 int dbwrap_check(struct db_context *db)
 {
 	if (db->check == NULL) {
diff --git a/lib/dbwrap/dbwrap.h b/lib/dbwrap/dbwrap.h
index 796475d3e2..30c24fedb3 100644
--- a/lib/dbwrap/dbwrap.h
+++ b/lib/dbwrap/dbwrap.h
@@ -76,6 +76,8 @@ NTSTATUS dbwrap_parse_record(struct db_context *db, TDB_DATA key,
 int dbwrap_wipe(struct db_context *db);
 int dbwrap_check(struct db_context *db);
 int dbwrap_get_seqnum(struct db_context *db);
+/* Returns 0 if unknown. */
+int dbwrap_hash_size(struct db_context *db);
 int dbwrap_transaction_start(struct db_context *db);
 NTSTATUS dbwrap_transaction_start_nonblock(struct db_context *db);
 int dbwrap_transaction_commit(struct db_context *db);
diff --git a/lib/dbwrap/dbwrap_cache.c b/lib/dbwrap/dbwrap_cache.c
index 1badeb13b9..f2a9c5fb0b 100644
--- a/lib/dbwrap/dbwrap_cache.c
+++ b/lib/dbwrap/dbwrap_cache.c
@@ -210,6 +210,7 @@ struct db_context *db_open_cache(TALLOC_CTX *mem_ctx,
 	db->exists = dbwrap_cache_exists;
 	db->id = dbwrap_cache_id;
 	db->name = dbwrap_name(ctx->backing);
+	db->hash_size = dbwrap_hash_size(ctx->backing);
 	db->stored_callback = NULL;
 	db->wipe = NULL;
 	db->lock_order = 0;
diff --git a/lib/dbwrap/dbwrap_file.c b/lib/dbwrap/dbwrap_file.c
index 4499021c57..54ed320864 100644
--- a/lib/dbwrap/dbwrap_file.c
+++ b/lib/dbwrap/dbwrap_file.c
@@ -373,6 +373,7 @@ struct db_context *db_open_file(TALLOC_CTX *mem_ctx,
 	result->traverse_read = db_file_traverse;
 	result->persistent = ((tdb_flags & TDB_CLEAR_IF_FIRST) == 0);
 	result->name = name;
+	result->hash_size = 0;
 
 	ctx->locked_record = NULL;
 	if (!(ctx->dirname = talloc_strdup(ctx, name))) {
diff --git a/lib/dbwrap/dbwrap_private.h b/lib/dbwrap/dbwrap_private.h
index f5b2140866..d49a568cd0 100644
--- a/lib/dbwrap/dbwrap_private.h
+++ b/lib/dbwrap/dbwrap_private.h
@@ -64,6 +64,7 @@ struct db_context {
 	int (*check)(struct db_context *db);
 	void (*id)(struct db_context *db, const uint8_t **id, size_t *idlen);
 	const char *name;
+	int hash_size;
 	void *private_data;
 	enum dbwrap_lock_order lock_order;
 	bool persistent;
diff --git a/lib/dbwrap/dbwrap_rbt.c b/lib/dbwrap/dbwrap_rbt.c
index 67794e6b96..afe9974cb5 100644
--- a/lib/dbwrap/dbwrap_rbt.c
+++ b/lib/dbwrap/dbwrap_rbt.c
@@ -507,6 +507,7 @@ struct db_context *db_open_rbt(TALLOC_CTX *mem_ctx)
 	result->lock_order = 0;
 	result->id = db_rbt_id;
 	result->name = "dbwrap rbt";
+	result->hash_size = 0;
 	result->stored_callback = NULL;
 
 	return result;
diff --git a/lib/dbwrap/dbwrap_tdb.c b/lib/dbwrap/dbwrap_tdb.c
index a6176b75c4..80d41b4ebb 100644
--- a/lib/dbwrap/dbwrap_tdb.c
+++ b/lib/dbwrap/dbwrap_tdb.c
@@ -474,6 +474,7 @@ struct db_context *db_open_tdb(TALLOC_CTX *mem_ctx,
 	result->check = db_tdb_check;
 	result->stored_callback = NULL;
 	result->name = tdb_name(db_tdb->wtdb->tdb);
+	result->hash_size = hash_size;
 	return result;
 
  fail: