mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
11eee67b85
Until now, our kernel has reimplemented a number of AK classes to provide automatic internal locking: - RefPtr - NonnullRefPtr - WeakPtr - Weakable This patch renames the Kernel classes so that they can coexist with the original AK classes: - RefPtr => LockRefPtr - NonnullRefPtr => NonnullLockRefPtr - WeakPtr => LockWeakPtr - Weakable => LockWeakable The goal here is to eventually get rid of the Lock* classes in favor of using external locking.
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Memory.h>
|
|
#include <Kernel/API/POSIX/errno.h>
|
|
#include <Kernel/Devices/DeviceManagement.h>
|
|
#include <Kernel/Devices/FullDevice.h>
|
|
#include <Kernel/Sections.h>
|
|
|
|
namespace Kernel {
|
|
|
|
UNMAP_AFTER_INIT NonnullLockRefPtr<FullDevice> FullDevice::must_create()
|
|
{
|
|
auto full_device_or_error = DeviceManagement::try_create_device<FullDevice>();
|
|
// FIXME: Find a way to propagate errors
|
|
VERIFY(!full_device_or_error.is_error());
|
|
return full_device_or_error.release_value();
|
|
}
|
|
|
|
UNMAP_AFTER_INIT FullDevice::FullDevice()
|
|
: CharacterDevice(1, 7)
|
|
{
|
|
}
|
|
|
|
UNMAP_AFTER_INIT FullDevice::~FullDevice() = default;
|
|
|
|
bool FullDevice::can_read(OpenFileDescription const&, u64) const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
ErrorOr<size_t> FullDevice::read(OpenFileDescription&, u64, UserOrKernelBuffer& buffer, size_t size)
|
|
{
|
|
TRY(buffer.memset(0, size));
|
|
return size;
|
|
}
|
|
|
|
ErrorOr<size_t> FullDevice::write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t size)
|
|
{
|
|
if (size == 0)
|
|
return 0;
|
|
return ENOSPC;
|
|
}
|
|
}
|