copy 可以执行，rename 就报拒绝访问

public function replace($path, $content)
{
        // If the path already exists and is a symlink, get the real path...
        clearstatcache(true, $path);

        $path = realpath($path) ?: $path;

        $tempPath = tempnam(dirname($path), basename($path));

        // Fix permissions of tempPath because `tempnam()` creates it with permissions set to 0600...
        chmod($tempPath, 0777 - umask());

        file_put_contents($tempPath, $content);

        rename($tempPath, $path);

}

这段代码位于vendor\laravel\framework\src\Illuminate\Filesystem\Filesystem.php第132行，执行php artisan package:discover后，rename会报拒绝访问的错误，但是改成copy就不会报错。