Function submodule_push_check

submodule.c:1174–1205

* Perform a check in the submodule to see if the remote and refspec work. * Die if the submodule can't be pushed. */

 * Die if the submodule can't be pushed.
 */
static void submodule_push_check(const char *path, const char *head,
				 const struct remote *remote,
				 const struct refspec *rs)
{
	struct child_process cp = CHILD_PROCESS_INIT;
	int i;

	if (validate_submodule_path(path) < 0)
		exit(128);

	strvec_push(&cp.args, "submodule--helper");
	strvec_push(&cp.args, "push-check");
	strvec_push(&cp.args, head);
	strvec_push(&cp.args, remote->name);

	for (i = 0; i < rs->nr; i++)
		strvec_push(&cp.args, rs->items[i].raw);

	prepare_submodule_repo_env(&cp.env);
	cp.git_cmd = 1;
	cp.no_stdin = 1;
	cp.no_stdout = 1;
	cp.dir = path;

	/*
	 * Simply indicate if 'submodule--helper push-check' failed.
	 * More detailed error information will be provided by the
	 * child process.
	 */
	if (run_command(&cp))
		die(_("process for submodule '%s' failed"), path);
}

int push_unpushed_submodules(struct repository *r,
			     struct oid_array *commits,