mirror of
https://github.com/RGBCube/serenity
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1dbd32488f
This change in fact does the following:
1. Use support for symlinks between /sys/dev/block/ storage device
identifier nodes and devices in /sys/devices/storage/{LUN}.
2. Add basic nodes in a /sys/devices/storage/{LUN} directory, to let
userspace to know about the device and its details.
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/SysFS/RootDirectory.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Directory.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Storage/DeviceDirectory.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Storage/Directory.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Storage/StorageDevice.h>
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namespace Kernel {
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static SysFSStorageDirectory* s_the { nullptr };
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UNMAP_AFTER_INIT NonnullRefPtr<SysFSStorageDirectory> SysFSStorageDirectory::must_create(SysFSDevicesDirectory const& parent_directory)
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{
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auto directory = adopt_ref(*new (nothrow) SysFSStorageDirectory(parent_directory));
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s_the = directory;
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return directory;
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}
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SysFSStorageDirectory& SysFSStorageDirectory::the()
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{
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VERIFY(s_the);
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return *s_the;
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}
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void SysFSStorageDirectory::plug(Badge<StorageDevice>, StorageDeviceSysFSDirectory& new_device_directory)
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{
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MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
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list.append(new_device_directory);
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auto pointed_component_base_name = MUST(KString::try_create(new_device_directory.name()));
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auto pointed_component_relative_path = MUST(new_device_directory.relative_path(move(pointed_component_base_name), 0));
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return {};
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}));
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}
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void SysFSStorageDirectory::unplug(Badge<StorageDevice>, SysFSDirectory& removed_device_directory)
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{
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MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
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list.remove(removed_device_directory);
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return {};
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}));
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}
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UNMAP_AFTER_INIT SysFSStorageDirectory::SysFSStorageDirectory(SysFSDevicesDirectory const& parent_directory)
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: SysFSDirectory(parent_directory)
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{
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}
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}
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