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Kernel/SysFS: Add /sys/devices/storage directory

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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.
This commit is contained in:
Liav A 2022-04-23 11:48:40 +03:00 • committed by Andreas Kling
parent 22335e53e0
commit 1dbd32488f
19 changed files with 450 additions and 1 deletions
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28
Kernel/FileSystem/SysFS/Subsystems/Devices/Directory.cpp Normal file
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/*
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/SysFS/RootDirectory.h>
#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Directory.h>
#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Storage/Directory.h>
#include <Kernel/Sections.h>
namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<SysFSDevicesDirectory> SysFSDevicesDirectory::must_create(SysFSRootDirectory const& root_directory)
{
auto devices_directory = adopt_ref_if_nonnull(new (nothrow) SysFSDevicesDirectory(root_directory)).release_nonnull();
MUST(devices_directory->m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(SysFSStorageDirectory::must_create(*devices_directory));
return {};
}));
return devices_directory;
}
SysFSDevicesDirectory::SysFSDevicesDirectory(SysFSRootDirectory const& root_directory)
: SysFSDirectory(root_directory)
{
}
}