--- source3/lib/sessionid_tdb.c.bug8546	2011-10-27 11:43:31.000000000 -0200
+++ source3/lib/sessionid_tdb.c	2011-10-27 13:56:34.000000000 -0200
@@ -23,6 +23,7 @@
 #include "session.h"
 #include "util_tdb.h"
 
+
 static struct db_context *session_db_ctx(void)
 {
 	static struct db_context *session_db_ctx_ptr;
@@ -37,6 +38,20 @@
 	return session_db_ctx_ptr;
 }
 
+static struct db_context *session_db_ctx_readonly(void)
+{
+	static struct db_context *session_db_ctx_ptr;
+
+	if (session_db_ctx_ptr != NULL) {
+		return session_db_ctx_ptr;
+	}
+
+	session_db_ctx_ptr = db_open(NULL, lock_path("sessionid.tdb"), 0,
+				     TDB_CLEAR_IF_FIRST|TDB_DEFAULT|TDB_INCOMPATIBLE_HASH,
+				     O_RDONLY | O_CREAT, 0644);
+	return session_db_ctx_ptr;
+}
+
 bool sessionid_init(void)
 {
 	if (session_db_ctx() == NULL) {
@@ -51,7 +66,7 @@
 {
 	struct db_context *db;
 
-	db = session_db_ctx();
+	db = session_db_ctx_readonly();
 	if (db == NULL) {
 		return NULL;
 	}
@@ -90,7 +105,7 @@
 	struct db_context *db;
 	struct sessionid_traverse_state state;
 
-	db = session_db_ctx();
+	db = session_db_ctx_readonly();
 	if (db == NULL) {
 		return -1;
 	}
@@ -132,7 +147,7 @@
 	struct db_context *db;
 	struct sessionid_traverse_read_state state;
 
-	db = session_db_ctx();
+	db = session_db_ctx_readonly();
 	if (db == NULL) {
 		return -1;
 	}