core/dbus-util: introduce bus_set_transient_tristate()

This will be used in later commits.

1 files changed, 24 insertions, 0 deletions

diff --git a/src/core/dbus-util.c b/src/core/dbus-util.c
index edfa0eb69a..461f6aafb2 100644
--- a/src/core/dbus-util.c
+++ b/src/core/dbus-util.c
@@ -93,6 +93,30 @@ int bus_set_transient_bool(
         return 1;
 }
 
+int bus_set_transient_tristate(
+                Unit *u,
+                const char *name,
+                int *p,
+                sd_bus_message *message,
+                UnitWriteFlags flags,
+                sd_bus_error *error) {
+
+        int v, r;
+
+        assert(p);
+
+        r = sd_bus_message_read(message, "b", &v);
+        if (r < 0)
+                return r;
+
+        if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
+                *p = v;
+                unit_write_settingf(u, flags, name, "%s=%s", name, yes_no(v));
+        }
+
+        return 1;
+}
+
 int bus_set_transient_usec_internal(
                 Unit *u,
                 const char *name,