mirror of
https://github.com/SerenityOS/serenity
synced 2026-05-09 16:42:10 +02:00
3edc6ae0d6
Do this by: - Removing more instances of `LockRefPtr` and `NonnullLockRefPtr`. - Using better names of construction methods (i.e. `create` instead of `try_create`). - Only returning `NonnullRefPtr` on the `Device::try_create_device` method. - Removing a version of the `Device::try_create_device` method that called `DeviceType::try_create(forward<Args>(args)...)`, which was only used in a construction point in a VirtIO driver which now doesn't need this anymore.
45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/API/MajorNumberAllocation.h>
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#include <Kernel/API/POSIX/errno.h>
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#include <Kernel/Devices/Device.h>
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#include <Kernel/Devices/Generic/FullDevice.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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UNMAP_AFTER_INIT NonnullRefPtr<FullDevice> FullDevice::must_create()
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{
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return MUST(Device::try_create_device<FullDevice>());
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}
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UNMAP_AFTER_INIT FullDevice::FullDevice()
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: CharacterDevice(MajorAllocation::CharacterDeviceFamily::Generic, 7)
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{
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}
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UNMAP_AFTER_INIT FullDevice::~FullDevice() = default;
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bool FullDevice::can_read(OpenFileDescription const&, u64) const
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{
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return true;
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}
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ErrorOr<size_t> FullDevice::read(OpenFileDescription&, u64, UserOrKernelBuffer& buffer, size_t size)
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{
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TRY(buffer.memset(0, size));
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return size;
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}
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ErrorOr<size_t> FullDevice::write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t size)
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{
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if (size == 0)
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return 0;
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return ENOSPC;
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}
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}
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