systemctl: explicitly cast the constants to uint64_t

Otherwise under certain conditions `va_arg()` might get garbage instead
of the expected value, i.e.:

$ sudo build-o0/systemctl disable asdfasfaf
sd_bus_message_appendv: Got uint64_t: 0
Failed to disable unit: Unit file asdfasfaf.service does not exist.

$ sudo build-o1/systemctl disable asdfasfaf
sd_bus_message_appendv: Got uint64_t: 7954875719681572864
Failed to disable unit: Invalid argument

(reproduced on an armv7hl machine)

Resolves: #26568
Follow-up to: bf1bea43f15
Related issue: https://github.com/systemd/systemd/pull/14470#discussion_r362893735

diff --git a/src/systemctl/systemctl-enable.c b/src/systemctl/systemctl-enable.c
index 4ebe5888ac699ba9a6c51f6b30e246078e73b3a0..a9c6f3a742c983cb0a13157d58feb44278e6c430 100644 (file)
--- a/src/systemctl/systemctl-enable.c
+++ b/src/systemctl/systemctl-enable.c
@@ -211,7 +211,7 @@ int verb_enable(int argc, char *argv[], void *userdata) {
 
                 if (send_runtime) {
                         if (streq(method, "DisableUnitFilesWithFlagsAndInstallInfo"))
-                                r = sd_bus_message_append(m, "t", arg_runtime ? UNIT_FILE_RUNTIME : 0);
+                                r = sd_bus_message_append(m, "t", arg_runtime ? (uint64_t) UNIT_FILE_RUNTIME : UINT64_C(0));
                         else
                                 r = sd_bus_message_append(m, "b", arg_runtime);
                         if (r < 0)