Function prepare_cmd

run-command.c:410–448

}

static int prepare_cmd(struct strvec *out, const struct child_process *cmd)
{
	if (!cmd->args.v[0])
		BUG("command is empty");

	/*
	 * Add SHELL_PATH so in the event exec fails with ENOEXEC we can
	 * attempt to interpret the command with 'sh'.
	 */
	strvec_push(out, SHELL_PATH);

	if (cmd->git_cmd) {
		prepare_git_cmd(out, cmd->args.v);
	} else if (cmd->use_shell) {
		prepare_shell_cmd(out, cmd->args.v);
	} else {
		strvec_pushv(out, cmd->args.v);
	}

	/*
	 * If there are no dir separator characters in the command then perform
	 * a path lookup and use the resolved path as the command to exec. If
	 * there are dir separator characters, we have exec attempt to invoke
	 * the command directly.
	 */
	if (!has_dir_sep(out->v[1])) {
		char *program = locate_in_PATH(out->v[1]);
		if (program) {
			free((char *)out->v[1]);
			out->v[1] = program;
		} else {
			strvec_clear(out);
			errno = ENOENT;
			return -1;
		}
	}

	return 0;
}

static char **prep_childenv(const char *const *deltaenv)
{