sd-bus: sync kdbus.h (ABI break)

After some reconsideration, we decided to move the binary protocol
back to 64-bit wide UIDs and GIDs. After all, it should be possible
to redefine [gu]id_t to uint64_t and things should continue to
work. As we want to avoid such data types in kdbus.h, let's move
back to 64-bit values and be safe.

In sd-bus, we have to do a translation between uint64_t and gid_t
now for supplementary gids.

Some inline comments have also been updated in kdbus upstream.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/libsystemd/sd-bus/bus-creds.c b/src/libsystemd/sd-bus/bus-creds.c
index a08391bfc2..d172dadbfd 100644
--- a/src/libsystemd/sd-bus/bus-creds.c
+++ b/src/libsystemd/sd-bus/bus-creds.c
@@ -51,6 +51,7 @@ void bus_creds_done(sd_bus_creds *c) {
         free(c->user_unit);
         free(c->slice);
         free(c->unescaped_description);
+        free(c->supplementary_gids);
 
         free(c->well_known_names); /* note that this is an strv, but
                                     * we only free the array, not the
@@ -100,7 +101,9 @@ _public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) {
                         free(c->unique_name);
                         free(c->cgroup_root);
                         free(c->description);
+
                         free(c->supplementary_gids);
+                        c->supplementary_gids = NULL;
 
                         strv_free(c->well_known_names);
                         c->well_known_names = NULL;