libsystemd-bus: add lightweight object vtable implementation for exposing objects on the bus

This adds a lightweight scheme how to define interfaces in static fixed
arrays which then can be easily registered on a bus connection. This
makes it much easier to write bus services.

This automatically handles implementation of the Properties,
ObjectManager, and Introspection bus interfaces.

1 files changed, 27 insertions, 1 deletions

diff --git a/Makefile.am b/Makefile.am
index 8d9c58758f..4c7646d84f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1956,6 +1956,8 @@ libsystemd_bus_la_SOURCES = \
 	src/libsystemd-bus/bus-match.h \
 	src/libsystemd-bus/bus-bloom.c \
 	src/libsystemd-bus/bus-bloom.h \
+	src/libsystemd-bus/bus-introspect.c \
+	src/libsystemd-bus/bus-introspect.h \
 	src/libsystemd-bus/kdbus.h \
 	src/libsystemd-bus/sd-memfd.c
 
@@ -1981,7 +1983,9 @@ tests += \
 	test-bus-kernel-bloom \
 	test-bus-kernel-benchmark \
 	test-bus-memfd \
-	test-bus-zero-copy
+	test-bus-zero-copy \
+	test-bus-introspect \
+	test-bus-objects
 
 noinst_PROGRAMS += \
 	busctl
@@ -2031,6 +2035,18 @@ test_bus_server_LDADD = \
 	libsystemd-bus.la \
 	libsystemd-id128-internal.la
 
+test_bus_objects_SOURCES = \
+	src/libsystemd-bus/test-bus-objects.c
+
+test_bus_objects_CFLAGS = \
+	$(AM_CFLAGS) \
+	-pthread
+
+test_bus_objects_LDADD = \
+	libsystemd-shared.la \
+	libsystemd-bus.la \
+	libsystemd-id128-internal.la
+
 test_bus_match_SOURCES = \
 	src/libsystemd-bus/test-bus-match.c
 
@@ -2095,6 +2111,16 @@ test_bus_zero_copy_LDADD = \
 	libsystemd-shared.la \
 	libsystemd-bus.la
 
+test_bus_introspect_SOURCES = \
+	src/libsystemd-bus/test-bus-introspect.c
+
+test_bus_introspect_CFLAGS = \
+	$(AM_CFLAGS)
+
+test_bus_introspect_LDADD = \
+	libsystemd-shared.la \
+	libsystemd-bus.la
+
 busctl_SOURCES = \
 	src/libsystemd-bus/busctl.c