diff options
Diffstat (limited to 'kernel/src/test_support/filesystem')
9 files changed, 288 insertions, 0 deletions
diff --git a/kernel/src/test_support/filesystem/ext2.cpp b/kernel/src/test_support/filesystem/ext2.cpp new file mode 100644 index 0000000..52b6efe --- /dev/null +++ b/kernel/src/test_support/filesystem/ext2.cpp @@ -0,0 +1,68 @@ +#include <kernel/test_support/filesystem/ext2.hpp> + +#include <kernel/filesystem/ext2/block_group_descriptor.hpp> +#include <kernel/filesystem/ext2/filesystem.hpp> +#include <kernel/filesystem/ext2/inode.hpp> +#include <kernel/filesystem/ext2/superblock.hpp> +#include <kernel/test_support/devices/block_device.hpp> + +#include <cstdint> +#include <cstring> + +namespace kernel::tests::filesystem::ext2 +{ + namespace + { + constexpr uint32_t root_directory_data_block = 20; + } // namespace + + auto write_bytes(kernel::tests::devices::block_device & device, size_t offset, void const * source, size_t size) + -> void + { + auto const required_size = offset + size; + if (device.data.size() < required_size) + { + device.data.resize(required_size, 0); + } + + std::memcpy(device.data.data() + offset, source, size); + } + + auto write_u32(kernel::tests::devices::block_device & device, size_t offset, uint32_t value) -> void + { + write_bytes(device, offset, &value, sizeof(value)); + } + + auto setup_mock_ext2_layout(kernel::tests::devices::block_device & device) -> void + { + auto superblock = kernel::filesystem::ext2::superblock{}; + superblock.magic = kernel::filesystem::ext2::constants::magic_number; + superblock.log_block_size = 0; + superblock.blocks_count = 64; + superblock.blocks_per_group = 64; + superblock.inodes_per_group = 32; + superblock.rev_level = 1; + superblock.inode_size = 128; + setup_mock_ext2_layout(device, superblock); + } + + auto setup_mock_ext2_layout(kernel::tests::devices::block_device & device, + kernel::filesystem::ext2::superblock const & superblock) -> void + { + write_bytes(device, kernel::filesystem::ext2::constants::superblock_offset, &superblock, sizeof(superblock)); + + auto group_descriptor = kernel::filesystem::ext2::block_group_descriptor{}; + group_descriptor.inode_table = 5; + write_bytes(device, 2048, &group_descriptor, sizeof(group_descriptor)); + + auto root_inode_data = kernel::filesystem::ext2::inode_data{}; + root_inode_data.mode = kernel::filesystem::ext2::constants::mode_directory; + root_inode_data.blocks = 2; + root_inode_data.block[0] = root_directory_data_block; + + auto const root_inode_offset = + static_cast<size_t>(group_descriptor.inode_table) * kernel::filesystem::ext2::constants::base_block_size + + (kernel::filesystem::ext2::constants::root_inode_number - 1) * superblock.inode_size; + write_bytes(device, root_inode_offset, &root_inode_data, sizeof(root_inode_data)); + } +} // namespace kernel::tests::filesystem::ext2
\ No newline at end of file diff --git a/kernel/src/test_support/filesystem/filesystem.cpp b/kernel/src/test_support/filesystem/filesystem.cpp new file mode 100644 index 0000000..ec70607 --- /dev/null +++ b/kernel/src/test_support/filesystem/filesystem.cpp @@ -0,0 +1,17 @@ +#include <kernel/test_support/filesystem/filesystem.hpp> + +#include <kernel/filesystem/inode.hpp> +#include <kernel/test_support/filesystem/inode.hpp> + +#include <kstd/memory> + +#include <string_view> + +namespace kernel::tests::filesystem +{ + auto filesystem::lookup(kstd::shared_ptr<kernel::filesystem::inode> const &, std::string_view) const + -> kstd::shared_ptr<kernel::filesystem::inode> + { + return kstd::make_shared<inode>(); + } +} // namespace kernel::tests::filesystem
\ No newline at end of file diff --git a/kernel/src/test_support/filesystem/inode.cpp b/kernel/src/test_support/filesystem/inode.cpp new file mode 100644 index 0000000..0c8d956 --- /dev/null +++ b/kernel/src/test_support/filesystem/inode.cpp @@ -0,0 +1,23 @@ +#include <kernel/test_support/filesystem/inode.hpp> + +#include <kernel/filesystem/inode.hpp> + +#include <cstddef> + +namespace kernel::tests::filesystem +{ + auto inode::read(void *, size_t, size_t size) const -> size_t + { + return size; + } + + auto inode::write(void const *, size_t, size_t size) -> size_t + { + return size; + } + + auto inode::is_regular() const -> bool + { + return true; + } +} // namespace kernel::tests::filesystem
\ No newline at end of file diff --git a/kernel/src/test_support/filesystem/storage_boot_module_fixture.cpp b/kernel/src/test_support/filesystem/storage_boot_module_fixture.cpp new file mode 100644 index 0000000..aabaace --- /dev/null +++ b/kernel/src/test_support/filesystem/storage_boot_module_fixture.cpp @@ -0,0 +1,139 @@ +#include <kernel/test_support/filesystem/storage_boot_module_fixture.hpp> + +#include <kernel/devices/storage/management.hpp> +#include <kernel/test_support/boot_modules.hpp> +#include <kernel/test_support/devices/storage/management.hpp> + +#include <kapi/boot_module/boot_module.hpp> +#include <kapi/boot_modules.hpp> +#include <kapi/memory.hpp> + +#include <cstddef> +#include <fcntl.h> +#include <filesystem> +#include <format> +#include <stdexcept> +#include <string> +#include <unistd.h> +#include <utility> +#include <vector> + +#include <sys/mman.h> +#include <sys/stat.h> + +namespace kernel::tests::filesystem +{ + storage_boot_module_fixture::mapped_image::mapped_image(std::filesystem::path path) + : file_descriptor(::open(path.c_str(), O_RDWR)) + { + if (file_descriptor < 0) + { + throw std::runtime_error{"Failed to open image file for test boot module: " + path.string()}; + } + + struct stat statistics{}; + if (::fstat(file_descriptor, &statistics) < 0) + { + throw std::runtime_error{"Failed to get statistics for image file: " + path.string()}; + } + + size = static_cast<std::size_t>(statistics.st_size); + + mapping = static_cast<std::byte *>(::mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, file_descriptor, 0)); + if (mapping == MAP_FAILED) + { + throw std::runtime_error{"Failed to map image file for test boot module: " + path.string()}; + } + } + + storage_boot_module_fixture::mapped_image::~mapped_image() + { + if (mapping != nullptr) + { + ::munmap(mapping, size); + } + if (file_descriptor >= 0) + { + ::close(file_descriptor); + } + } + + storage_boot_module_fixture::mapped_image::mapped_image(mapped_image && other) noexcept + : file_descriptor{std::exchange(other.file_descriptor, -1)} + , mapping{std::exchange(other.mapping, nullptr)} + , size{std::exchange(other.size, 0)} + {} + + auto storage_boot_module_fixture::mapped_image::operator=(mapped_image && other) noexcept -> mapped_image & + { + if (this != &other) + { + file_descriptor = std::exchange(other.file_descriptor, -1); + mapping = std::exchange(other.mapping, nullptr); + size = std::exchange(other.size, 0); + } + return *this; + } + + storage_boot_module_fixture::~storage_boot_module_fixture() + { + kernel::tests::devices::storage::management::deinit(); + kernel::tests::boot_modules::deinit(); + } + + auto storage_boot_module_fixture::setup_modules(std::size_t module_count, std::size_t module_size) -> void + { + m_module_names.clear(); + m_module_data.clear(); + m_registry = {}; + + m_module_names.reserve(module_count); + m_module_data.reserve(module_count); + + for (std::size_t i = 0; i < module_count; ++i) + { + m_module_names.push_back(std::format("test_mod{}", i)); + m_module_data.emplace_back(module_size, std::byte{static_cast<unsigned char>(0x40 + (i % 16))}); + } + + for (std::size_t i = 0; i < module_count; ++i) + { + m_registry.add_boot_module(kapi::boot_modules::boot_module{ + m_module_names[i].c_str(), kapi::memory::linear_address{m_module_data[i].data()}, m_module_data[i].size()}); + } + + kapi::boot_modules::set_boot_module_registry(m_registry); + kernel::devices::storage::management::init(); + } + + auto storage_boot_module_fixture::setup_modules_from_img(std::vector<std::string> const & module_names, + std::vector<std::filesystem::path> const & img_paths) -> void + { + m_module_names.clear(); + m_module_data.clear(); + m_registry = {}; + + if (module_names.size() != img_paths.size()) + { + throw std::invalid_argument{"Module names and image paths vectors must have the same size."}; + } + + for (size_t i = 0; i < module_names.size(); ++i) + { + setup_module_from_img(module_names[i], img_paths[i]); + } + + kapi::boot_modules::set_boot_module_registry(m_registry); + kernel::devices::storage::management::init(); + } + + auto storage_boot_module_fixture::setup_module_from_img(std::string const & module_name, + std::filesystem::path const & img_path) -> void + { + m_module_names.push_back(module_name); + auto & mapped_image = m_mapped_images.emplace_back(img_path); + + m_registry.add_boot_module(kapi::boot_modules::boot_module{ + m_module_names.back().c_str(), kapi::memory::linear_address{mapped_image.mapping}, mapped_image.size}); + } +} // namespace kernel::tests::filesystem
\ No newline at end of file diff --git a/kernel/src/test_support/filesystem/storage_boot_module_vfs_fixture.cpp b/kernel/src/test_support/filesystem/storage_boot_module_vfs_fixture.cpp new file mode 100644 index 0000000..02ccfec --- /dev/null +++ b/kernel/src/test_support/filesystem/storage_boot_module_vfs_fixture.cpp @@ -0,0 +1,31 @@ +#include <kernel/test_support/filesystem/storage_boot_module_vfs_fixture.hpp> + +#include <kernel/filesystem/vfs.hpp> +#include <kernel/test_support/filesystem/vfs.hpp> + +#include <cstddef> +#include <filesystem> +#include <string> +#include <vector> + +namespace kernel::tests::filesystem +{ + storage_boot_module_vfs_fixture::~storage_boot_module_vfs_fixture() + { + kernel::tests::filesystem::vfs::deinit(); + } + + auto storage_boot_module_vfs_fixture::setup_modules_and_init_vfs(std::size_t module_count, std::size_t module_size) + -> void + { + setup_modules(module_count, module_size); + kernel::filesystem::vfs::init(); + } + + auto storage_boot_module_vfs_fixture::setup_modules_from_img_and_init_vfs( + std::vector<std::string> const & module_names, std::vector<std::filesystem::path> const & img_paths) -> void + { + setup_modules_from_img(module_names, img_paths); + kernel::filesystem::vfs::init(); + } +} // namespace kernel::tests::filesystem
\ No newline at end of file diff --git a/kernel/src/test_support/filesystem/test_assets/README.md b/kernel/src/test_support/filesystem/test_assets/README.md new file mode 120000 index 0000000..718a227 --- /dev/null +++ b/kernel/src/test_support/filesystem/test_assets/README.md @@ -0,0 +1 @@ +/arch/x86_64/support/modules/README.md
\ No newline at end of file diff --git a/kernel/src/test_support/filesystem/test_assets/ext2_1KB_fs.img b/kernel/src/test_support/filesystem/test_assets/ext2_1KB_fs.img new file mode 100644 index 0000000..a5202ca --- /dev/null +++ b/kernel/src/test_support/filesystem/test_assets/ext2_1KB_fs.img @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:98ac3c1be872806e25fb14eea168ca79a91959f4e6a5ac3d00c5d8224c1f73a3 +size 10485760 diff --git a/kernel/src/test_support/filesystem/test_assets/ext2_2KB_fs.img b/kernel/src/test_support/filesystem/test_assets/ext2_2KB_fs.img new file mode 100644 index 0000000..7f297f0 --- /dev/null +++ b/kernel/src/test_support/filesystem/test_assets/ext2_2KB_fs.img @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:6d9e872916e7d9107b321cc007e151899d5f19400a694666c0b24d482aef61ca +size 5242880 diff --git a/kernel/src/test_support/filesystem/test_assets/ext2_4KB_fs.img b/kernel/src/test_support/filesystem/test_assets/ext2_4KB_fs.img new file mode 100644 index 0000000..c3f6daf --- /dev/null +++ b/kernel/src/test_support/filesystem/test_assets/ext2_4KB_fs.img @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:026ca30269dbd80beb2dd74677c94676d1d4a7f6b5fe406c4ddb82836ba2dc00 +size 10485760 |