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Diffstat (limited to 'kernel/filesystem/src/vfs.cpp')
| -rw-r--r-- | kernel/filesystem/src/vfs.cpp | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/kernel/filesystem/src/vfs.cpp b/kernel/filesystem/src/vfs.cpp deleted file mode 100644 index c0f1c3a..0000000 --- a/kernel/filesystem/src/vfs.cpp +++ /dev/null @@ -1,123 +0,0 @@ -#include "filesystem/vfs.hpp" - -#include "kapi/system.hpp" - -#include "devices/device.hpp" -#include "devices/storage/storage_management.hpp" -#include "filesystem/custody.hpp" -#include "filesystem/device_file.hpp" -#include "filesystem/ext2/ext2_filesystem.hpp" -#include "filesystem/inode.hpp" -#include "filesystem/inode_file.hpp" -#include "filesystem/mount.hpp" -#include "filesystem/open_file_description.hpp" - -#include <kstd/cstring> -#include <kstd/memory> - -#include <algorithm> -#include <optional> -#include <string_view> - -namespace filesystem -{ - namespace - { - constinit auto static active_vfs = std::optional<vfs>{}; - } // namespace - - auto vfs::init() -> void - { - if (active_vfs) - { - kapi::system::panic("[FILESYSTEM] vfs has already been initialized."); - } - - active_vfs.emplace(vfs{}); - - auto storage_mgmt = devices::storage::storage_management::get(); - if (auto boot_device = storage_mgmt.determine_boot_device()) - { - active_vfs->m_root_fs = kstd::make_shared<ext2::ext2_filesystem>(); - if (active_vfs->m_root_fs->mount(boot_device) != 0) - { - kapi::system::panic("[FILESYSTEM] Failed to mount root filesystem."); - } - - active_vfs->m_root_mount = mount{"/", active_vfs->m_root_fs}; - - std::ranges::for_each(storage_mgmt.all_controllers(), [&](auto controller) { - std::ranges::for_each(controller->all_devices(), [&](auto device) { active_vfs->make_device_node(device); }); - }); - } - else - { - // TODO BA-FS26 ?? what when no boot_device == no modules loaded?? - } - } - - auto vfs::get() -> vfs & - { - if (!active_vfs) - { - kapi::system::panic("[FILESYSTEM] vfs has not been initialized."); - } - - return *active_vfs; - } - - auto vfs::open(std::string_view path) -> std::optional<open_file_description> - { - if (auto custody = resolve_path(path)) - { - auto node = custody->get_inode(); - if (node->is_device()) - { - auto current_device_file = kstd::make_shared<device_file>(node->backing_device()); - current_device_file->open(); - return open_file_description{current_device_file}; - } - - auto current_inode_file = kstd::make_shared<inode_file>(node); - current_inode_file->open(); - return open_file_description{current_inode_file}; - } - - return std::nullopt; - } - - auto vfs::make_device_node(kstd::shared_ptr<devices::device> const & device) -> void - { - if (!device) - { - kapi::system::panic("[FILESYSTEM] make_device_node called with null device."); - } - - m_device_nodes.push_back(device_node_entry{device->name(), kstd::make_shared<inode>(device)}); - } - - auto vfs::resolve_path(std::string_view path) -> std::optional<custody> - { - // TODO BA-FS26 implement real path resolution with mounts and directories etc. - // For now, just support device nodes at /dev/<device_name>. - - constexpr auto device_prefix = std::string_view{"/dev/"}; - if (path.starts_with(device_prefix)) - { - auto const device_name = path.substr(device_prefix.size()); - auto entry = std::ranges::find_if(m_device_nodes, [&](auto const & device_entry) { - return device_entry.has_value() && device_entry->name == device_name; - }); - - if (entry != m_device_nodes.end()) - { - return custody{nullptr, entry->value().node}; - } - - return std::nullopt; - } - - return std::nullopt; - } - -} // namespace filesystem
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