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-rw-r--r--dbus/dbus-protocol.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/dbus/dbus-protocol.h b/dbus/dbus-protocol.h
index a0cf54ef..549ef0e5 100644
--- a/dbus/dbus-protocol.h
+++ b/dbus/dbus-protocol.h
@@ -60,6 +60,9 @@ extern "C" {
/* Max length in bytes of a service or interface or member name */
#define DBUS_MAXIMUM_NAME_LENGTH 256
+/* Max length of a match rule string */
+#define DBUS_MAXIMUM_MATCH_RULE_LENGTH 1024
+
/* Types of message */
#define DBUS_MESSAGE_TYPE_INVALID 0
#define DBUS_MESSAGE_TYPE_METHOD_CALL 1