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#include "kernel/filesystem/devfs/filesystem.hpp"
#include "kapi/devices/device.hpp"
#include "kernel/devices/storage/management.hpp"
#include "kernel/filesystem/devfs/inode.hpp"
#include "kernel/filesystem/device_inode.hpp"
#include "kernel/filesystem/inode.hpp"
#include <kstd/memory>
#include <algorithm>
#include <string_view>
namespace kernel::filesystem::devfs
{
auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const &) -> operation_result
{
m_root_inode = kstd::make_shared<inode>();
build_device_inode_table();
return operation_result::success;
}
auto filesystem::lookup(kstd::shared_ptr<kernel::filesystem::inode> const & parent, std::string_view name)
-> kstd::shared_ptr<kernel::filesystem::inode>
{
if (!parent || !parent->is_directory())
{
return nullptr;
}
if (parent.get() != m_root_inode.get())
{
return nullptr;
}
auto it = std::ranges::find_if(m_inodes, [&](auto const & dev_node) {
auto device_inode_ptr = static_cast<device_inode *>(dev_node.get());
if (!device_inode_ptr)
{
return false;
}
return device_inode_ptr->device()->name() == name;
});
return (it != m_inodes.end()) ? *it : nullptr;
}
auto filesystem::build_device_inode_table() -> void
{
m_inodes.clear();
auto storage_mgmt = devices::storage::management::get();
std::ranges::for_each(storage_mgmt.all_controllers(), [&](auto const & controller) {
std::ranges::for_each(controller->all_devices(),
[&](auto const & device) { m_inodes.push_back(kstd::make_shared<device_inode>(device)); });
});
}
} // namespace kernel::filesystem::devfs
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