/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <Kernel/Devices/Device.h>
#include <Kernel/Devices/HardwareEventsManager.h>
#include <LibC/errno_numbers.h>

void Device::for_each(Function<void(Device&)> callback)
{
    for (auto* entry : HardwareEventsManager::the().get_devices_list()) {
        ASSERT(entry != nullptr);
        callback(*entry);
    }
}

Device* Device::get_device(unsigned major, unsigned minor)
{
    return HardwareEventsManager::the().get_device(major, minor);
}

Device::Device(unsigned major, unsigned minor, u8 device_type)
    : m_major(major)
    , m_minor(minor)
{
    HardwareEventsManager::the().register_device(*this, device_type);
}

Device::~Device()
{
    HardwareEventsManager::the().unregister_device(*this);
}

String Device::absolute_path() const
{
    return String::format("device:%u,%u (%s)", m_major, m_minor, class_name());
}

String Device::absolute_path(const FileDescription&) const
{
    return absolute_path();
}