SBUS: Start implementing property access

This patch adds the basis of SBUS getters and setters. A new module,
sssd_dbus_properties.c would contain handlers for the property methods
like Get, Set and GetAll.

Type-safe property access works in a similar fashion like type-safe
method calls - the invoker calls the getter which returns the primitive
type, which is in turn marshalled into variant by the invoker.

This patch does not contain the complete functionality, see later
patches that continue implementing the getters and setters.

Reviewed-by: Stef Walter <stefw@redhat.com>
Reviewed-by: Pavel Březina <pbrezina@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/sbus/sssd_dbus.h b/src/sbus/sssd_dbus.h
index a19f1d9c6..9c236479e 100644
--- a/src/sbus/sssd_dbus.h
+++ b/src/sbus/sssd_dbus.h
@@ -80,6 +80,9 @@ struct sbus_vtable {
 #define DBUS_INTROSPECT_INTERFACE "org.freedesktop.DBus.Introspectable"
 #define DBUS_INTROSPECT_METHOD "Introspect"
 
+/* Special interface and method for D-BUS properties */
+#define DBUS_PROPERTIES_INTERFACE "org.freedesktop.DBus.Properties"
+
 struct sbus_interface {
     const char *path;
     struct sbus_vtable *vtable;
@@ -257,6 +260,7 @@ int sbus_request_return_array_as_variant(struct sbus_request *dbus_req,
                                          const size_t item_size);
 
 /*
+
  * Return an error for a DBus method call request. The @error is a normal
  * DBusError.
  *