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Kernel/SysFS: Migrate components code from SysFS.cpp to the SysFS folder

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Liav A 2022-04-22 12:46:19 +03:00 • committed by Andreas Kling
parent 4d05a41b30
commit 23c1c40e86
29 changed files with 496 additions and 286 deletions
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101
Kernel/Devices/Device.cpp
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@ -13,107 +13,6 @@
namespace Kernel {
NonnullRefPtr<SysFSDeviceComponent> SysFSDeviceComponent::must_create(Device const& device)
{
// FIXME: Handle allocation failure gracefully
auto device_name = MUST(KString::formatted("{}:{}", device.major(), device.minor()));
return adopt_ref_if_nonnull(new SysFSDeviceComponent(move(device_name), device)).release_nonnull();
}
SysFSDeviceComponent::SysFSDeviceComponent(NonnullOwnPtr<KString> major_minor_formatted_device_name, Device const& device)
: SysFSComponent()
, m_block_device(device.is_block_device())
, m_major_minor_formatted_device_name(move(major_minor_formatted_device_name))
{
VERIFY(device.is_block_device() || device.is_character_device());
}
UNMAP_AFTER_INIT NonnullRefPtr<SysFSDevicesDirectory> SysFSDevicesDirectory::must_create(SysFSRootDirectory const& root_directory)
{
auto devices_directory = adopt_ref_if_nonnull(new SysFSDevicesDirectory(root_directory)).release_nonnull();
devices_directory->m_components.append(SysFSBlockDevicesDirectory::must_create(*devices_directory));
devices_directory->m_components.append(SysFSCharacterDevicesDirectory::must_create(*devices_directory));
return devices_directory;
}
SysFSDevicesDirectory::SysFSDevicesDirectory(SysFSRootDirectory const& root_directory)
: SysFSDirectory(root_directory)
{
}
NonnullRefPtr<SysFSBlockDevicesDirectory> SysFSBlockDevicesDirectory::must_create(SysFSDevicesDirectory const& devices_directory)
{
return adopt_ref_if_nonnull(new SysFSBlockDevicesDirectory(devices_directory)).release_nonnull();
}
SysFSBlockDevicesDirectory::SysFSBlockDevicesDirectory(SysFSDevicesDirectory const& devices_directory)
: SysFSDirectory(devices_directory)
{
}
ErrorOr<void> SysFSBlockDevicesDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
VERIFY(m_parent_directory);
TRY(callback({ ".", { fsid, component_index() }, 0 }));
TRY(callback({ "..", { fsid, m_parent_directory->component_index() }, 0 }));
return SysFSComponentRegistry::the().devices_list().with_exclusive([&](auto& list) -> ErrorOr<void> {
for (auto& exposed_device : list) {
if (!exposed_device.is_block_device())
continue;
TRY(callback({ exposed_device.name(), { fsid, exposed_device.component_index() }, 0 }));
}
return {};
});
}
RefPtr<SysFSComponent> SysFSBlockDevicesDirectory::lookup(StringView name)
{
return SysFSComponentRegistry::the().devices_list().with_exclusive([&](auto& list) -> RefPtr<SysFSComponent> {
for (auto& exposed_device : list) {
if (!exposed_device.is_block_device())
continue;
if (exposed_device.name() == name)
return exposed_device;
}
return nullptr;
});
}
NonnullRefPtr<SysFSCharacterDevicesDirectory> SysFSCharacterDevicesDirectory::must_create(SysFSDevicesDirectory const& devices_directory)
{
return adopt_ref_if_nonnull(new SysFSCharacterDevicesDirectory(devices_directory)).release_nonnull();
}
SysFSCharacterDevicesDirectory::SysFSCharacterDevicesDirectory(SysFSDevicesDirectory const& devices_directory)
: SysFSDirectory(devices_directory)
{
}
ErrorOr<void> SysFSCharacterDevicesDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
VERIFY(m_parent_directory);
TRY(callback({ ".", { fsid, component_index() }, 0 }));
TRY(callback({ "..", { fsid, m_parent_directory->component_index() }, 0 }));
return SysFSComponentRegistry::the().devices_list().with_exclusive([&](auto& list) -> ErrorOr<void> {
for (auto& exposed_device : list) {
if (exposed_device.is_block_device())
continue;
TRY(callback({ exposed_device.name(), { fsid, exposed_device.component_index() }, 0 }));
}
return {};
});
}
RefPtr<SysFSComponent> SysFSCharacterDevicesDirectory::lookup(StringView name)
{
return SysFSComponentRegistry::the().devices_list().with_exclusive([&](auto& list) -> RefPtr<SysFSComponent> {
for (auto& exposed_device : list) {
if (exposed_device.is_block_device())
continue;
if (exposed_device.name() == name)
return exposed_device;
}
return nullptr;
});
}
Device::Device(MajorNumber major, MinorNumber minor)
: m_major(major)
, m_minor(minor)