Merge "fs_mgr: reorder getting boot config"

    return fs_mgr_get_boot_config_from_kernel(cmdline, key, out_val);

}

// Tries to get the boot config value in properties, kernel cmdline and

// device tree (in that order).  returns 'true' if successfully found, 'false'

// otherwise

// Tries to get the boot config value in device tree, properties and

// kernel cmdline (in that order).  Returns 'true' if successfully

// found, 'false' otherwise.

bool fs_mgr_get_boot_config(const std::string& key, std::string* out_val) {

    FS_MGR_CHECK(out_val != nullptr);

    // first check if we have "ro.boot" property already

    *out_val = android::base::GetProperty("ro.boot." + key, "");

    if (!out_val->empty()) {

        return true;

    }

    // fallback to kernel cmdline, properties may not be ready yet

    if (fs_mgr_get_boot_config_from_kernel_cmdline(key, out_val)) {

        return true;

    }

    // lastly, check the device tree

    // firstly, check the device tree

    if (is_dt_compatible()) {

        std::string file_name = get_android_dt_dir() + "/" + key;

        if (android::base::ReadFileToString(file_name, out_val)) {

        }

    }

    // next, check if we have "ro.boot" property already

    *out_val = android::base::GetProperty("ro.boot." + key, "");

    if (!out_val->empty()) {

        return true;

    }

    // finally, fallback to kernel cmdline, properties may not be ready yet

    if (fs_mgr_get_boot_config_from_kernel_cmdline(key, out_val)) {

        return true;

    }

    return false;

}