mirror of
https://github.com/RGBCube/serenity
synced 2025-05-14 11:44:58 +00:00
3f3f45580a
Each of these strings would previously rely on StringView's char const* constructor overload, which would call __builtin_strlen on the string. Since we now have operator ""sv, we can replace these with much simpler versions. This opens the door to being able to remove StringView(char const*). No functional changes.
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/FileSystem/SysFS/Registry.h>
|
|
#include <Kernel/FileSystem/SysFS/Subsystems/Bus/USB/BusDirectory.h>
|
|
#include <Kernel/KBufferBuilder.h>
|
|
|
|
namespace Kernel {
|
|
|
|
static SysFSUSBBusDirectory* s_procfs_usb_bus_directory;
|
|
|
|
ErrorOr<void> SysFSUSBBusDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
// Note: if the parent directory is null, it means something bad happened as this should not happen for the USB directory.
|
|
VERIFY(m_parent_directory);
|
|
TRY(callback({ "."sv, { fsid, component_index() }, 0 }));
|
|
TRY(callback({ ".."sv, { fsid, m_parent_directory->component_index() }, 0 }));
|
|
|
|
for (auto const& device_node : m_device_nodes) {
|
|
InodeIdentifier identifier = { fsid, device_node.component_index() };
|
|
TRY(callback({ device_node.name(), identifier, 0 }));
|
|
}
|
|
return {};
|
|
}
|
|
|
|
RefPtr<SysFSComponent> SysFSUSBBusDirectory::lookup(StringView name)
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
for (auto& device_node : m_device_nodes) {
|
|
if (device_node.name() == name) {
|
|
return device_node;
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
RefPtr<SysFSUSBDeviceInformation> SysFSUSBBusDirectory::device_node_for(USB::Device& device)
|
|
{
|
|
RefPtr<USB::Device> checked_device = device;
|
|
for (auto& device_node : m_device_nodes) {
|
|
if (device_node.device().ptr() == checked_device.ptr())
|
|
return device_node;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
void SysFSUSBBusDirectory::plug(USB::Device& new_device)
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
auto device_node = device_node_for(new_device);
|
|
VERIFY(!device_node);
|
|
auto sysfs_usb_device_or_error = SysFSUSBDeviceInformation::create(new_device);
|
|
if (sysfs_usb_device_or_error.is_error()) {
|
|
dbgln("Failed to create SysFSUSBDevice for device id {}", new_device.address());
|
|
return;
|
|
}
|
|
|
|
m_device_nodes.append(sysfs_usb_device_or_error.release_value());
|
|
}
|
|
|
|
void SysFSUSBBusDirectory::unplug(USB::Device& deleted_device)
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
auto device_node = device_node_for(deleted_device);
|
|
VERIFY(device_node);
|
|
device_node->m_list_node.remove();
|
|
}
|
|
|
|
SysFSUSBBusDirectory& SysFSUSBBusDirectory::the()
|
|
{
|
|
VERIFY(s_procfs_usb_bus_directory);
|
|
return *s_procfs_usb_bus_directory;
|
|
}
|
|
|
|
UNMAP_AFTER_INIT SysFSUSBBusDirectory::SysFSUSBBusDirectory(SysFSBusDirectory& buses_directory)
|
|
: SysFSDirectory(buses_directory)
|
|
{
|
|
}
|
|
|
|
UNMAP_AFTER_INIT void SysFSUSBBusDirectory::initialize()
|
|
{
|
|
auto directory = adopt_ref(*new SysFSUSBBusDirectory(SysFSComponentRegistry::the().buses_directory()));
|
|
SysFSComponentRegistry::the().register_new_bus_directory(directory);
|
|
s_procfs_usb_bus_directory = directory;
|
|
}
|
|
|
|
ErrorOr<NonnullRefPtr<SysFSUSBDeviceInformation>> SysFSUSBDeviceInformation::create(USB::Device& device)
|
|
{
|
|
auto device_name = TRY(KString::number(device.address()));
|
|
return adopt_nonnull_ref_or_enomem(new (nothrow) SysFSUSBDeviceInformation(move(device_name), device));
|
|
}
|
|
|
|
}
|