3 files changed, 26 insertions, 0 deletions
diff --git a/builtin/gc.c b/builtin/gc.c
index 19d73067aa..2ebae7bc17 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -1708,6 +1708,16 @@ static int get_schedule_cmd(const char **cmd, int *is_available)
 	return 1;
 }
 
+MAYBE_UNUSED
+static int get_random_minute(void)
+{
+	/* Use a static value when under tests. */
+	if (getenv("GIT_TEST_MAINT_SCHEDULER"))
+		return 13;
+
+	return git_rand() % 60;
+}
+
 static int is_launchctl_available(void)
 {
 	const char *cmd = "launchctl";
diff --git a/wrapper.c b/wrapper.c
index 5160c9e28d..48065c4f53 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -819,3 +819,13 @@ int csprng_bytes(void *buf, size_t len)
 	return 0;
 #endif
 }
+
+uint32_t git_rand(void)
+{
+	uint32_t result;
+
+	if (csprng_bytes(&result, sizeof(result)) < 0)
+		die(_("unable to get random bytes"));
+
+	return result;
+}
diff --git a/wrapper.h b/wrapper.h
index 79a9c1b507..79c7321bb3 100644
--- a/wrapper.h
+++ b/wrapper.h
@@ -139,4 +139,10 @@ void sleep_millisec(int millisec);
  */
 int csprng_bytes(void *buf, size_t len);
 
+/*
+ * Returns a random uint32_t, uniformly distributed across all possible
+ * values.
+ */
+uint32_t git_rand(void);
+
 #endif /* WRAPPER_H */