bus: add sd_bus_message_append_string_space() for zero-copy string appending

1 files changed, 9 insertions, 0 deletions

diff --git a/src/libsystemd-bus/test-bus-marshal.c b/src/libsystemd-bus/test-bus-marshal.c
index ac519531f7..ef1a77f5fc 100644
--- a/src/libsystemd-bus/test-bus-marshal.c
+++ b/src/libsystemd-bus/test-bus-marshal.c
@@ -44,6 +44,7 @@ int main(int argc, char *argv[]) {
         size_t sz;
         char *h;
         const int32_t integer_array[] = { -1, -2, 0, 1, 2 }, *return_array;
+        char *s;
 
         r = sd_bus_message_new_method_call(NULL, "foobar.waldo", "/", "foobar.waldo", "Piep", &m);
         assert_se(r >= 0);
@@ -78,6 +79,10 @@ int main(int argc, char *argv[]) {
         r = sd_bus_message_close_container(m);
         assert_se(r >= 0);
 
+        r = sd_bus_message_append_string_space(m, 5, &s);
+        assert_se(r >= 0);
+        strcpy(s, "hallo");
+
         r = sd_bus_message_append_array(m, 'i', integer_array, sizeof(integer_array));
         assert_se(r >= 0);
 
@@ -172,6 +177,10 @@ int main(int argc, char *argv[]) {
         assert_se(streq(x, "foobar"));
         assert_se(streq(y, "waldo"));
 
+        r = sd_bus_message_read_basic(m, 's', &s);
+        assert_se(r > 0);
+        assert_se(streq(s, "hallo"));
+
         r = sd_bus_message_read_array(m, 'i', (const void**) &return_array, &sz);
         assert_se(r > 0);
         assert_se(sz == sizeof(integer_array));