From b3209ac2564f21f3b78ecf5e0c05ca346a4a4276 Mon Sep 17 00:00:00 2001 From: Lukas Oesch Date: Tue, 28 Apr 2026 10:49:34 +0200 Subject: refactor inode kind --- kernel/include/kernel/filesystem/devfs/inode.hpp | 10 ++++----- kernel/include/kernel/filesystem/device_inode.hpp | 5 +++++ kernel/include/kernel/filesystem/ext2/inode.hpp | 21 ++++++++++++++---- kernel/include/kernel/filesystem/inode.hpp | 25 +++++----------------- .../include/kernel/filesystem/open_file_table.hpp | 4 ++-- kernel/include/kernel/filesystem/rootfs/inode.hpp | 10 ++++----- .../kernel/test_support/filesystem/inode.hpp | 4 ++-- 7 files changed, 41 insertions(+), 38 deletions(-) (limited to 'kernel/include') diff --git a/kernel/include/kernel/filesystem/devfs/inode.hpp b/kernel/include/kernel/filesystem/devfs/inode.hpp index 0fab280..5589730 100644 --- a/kernel/include/kernel/filesystem/devfs/inode.hpp +++ b/kernel/include/kernel/filesystem/devfs/inode.hpp @@ -13,11 +13,6 @@ namespace kernel::filesystem::devfs */ struct inode : kernel::filesystem::inode { - /** - @brief Create a devfs inode. The inode is initialized with the appropriate kind (directory). - */ - inode(); - /** @brief Reads from the devfs directory inode. @param buffer Destination buffer. @@ -35,6 +30,11 @@ namespace kernel::filesystem::devfs @return Number of bytes written (always 0 because writes are not supported for this inode). */ auto write(void const * buffer, size_t offset, size_t size) -> size_t override; + + /** + // % TODO BA-FS26 + */ + [[nodiscard]] auto is_directory() const -> bool override; }; } // namespace kernel::filesystem::devfs diff --git a/kernel/include/kernel/filesystem/device_inode.hpp b/kernel/include/kernel/filesystem/device_inode.hpp index 2f79fca..fb60524 100644 --- a/kernel/include/kernel/filesystem/device_inode.hpp +++ b/kernel/include/kernel/filesystem/device_inode.hpp @@ -50,6 +50,11 @@ namespace kernel::filesystem */ [[nodiscard]] auto device() const -> kstd::shared_ptr const &; + /** + // TODO BA-FS26 + */ + [[nodiscard]] auto is_device() const -> bool override; + private: kstd::shared_ptr m_device; }; diff --git a/kernel/include/kernel/filesystem/ext2/inode.hpp b/kernel/include/kernel/filesystem/ext2/inode.hpp index 9291eea..64cdb06 100644 --- a/kernel/include/kernel/filesystem/ext2/inode.hpp +++ b/kernel/include/kernel/filesystem/ext2/inode.hpp @@ -42,8 +42,10 @@ namespace kernel::filesystem::ext2 { /** @brief Create an ext2 inode associated with the given filesystem. + @param fs The ext2 filesystem that this inode belongs to. + @param data The data associated with this inode, read from the disk. */ - explicit inode(filesystem * fs); + explicit inode(filesystem * fs, inode_data const & data); /** @brief Reads from the ext2 inode into a @p buffer, starting at the specified @p offset and for a given @p size. @@ -65,12 +67,23 @@ namespace kernel::filesystem::ext2 auto write(void const * buffer, size_t offset, size_t size) -> size_t override; /** - @brief The raw inode data as read from the disk. - */ - inode_data m_data{}; + // TODO BA-FS26 + */ + [[nodiscard]] auto data() const -> inode_data const &; + + /** + // TODO BA-FS26 + */ + [[nodiscard]] auto is_directory() const -> bool override; + + /** + // TODO BA-FS26 + */ + [[nodiscard]] auto is_regular() const -> bool override; private: filesystem * m_filesystem; + inode_data m_data{}; }; } // namespace kernel::filesystem::ext2 diff --git a/kernel/include/kernel/filesystem/inode.hpp b/kernel/include/kernel/filesystem/inode.hpp index 5208be2..d071a6b 100644 --- a/kernel/include/kernel/filesystem/inode.hpp +++ b/kernel/include/kernel/filesystem/inode.hpp @@ -11,20 +11,9 @@ namespace kernel::filesystem struct inode { /** - @brief Represents the kind of an inode. + @brief Create an inode. */ - enum class inode_kind - { - regular, - directory, - device - }; - - /** - @brief Create an inode with the given @p kind. - @param kind The kind of the inode. - */ - explicit inode(inode_kind kind); + inode() = default; /** @brief Virtual destructor for the inode. @@ -55,23 +44,19 @@ namespace kernel::filesystem @brief Returns whether the inode is a directory. @return true if the inode is a directory, false otherwise. */ - [[nodiscard]] auto is_directory() const -> bool; + [[nodiscard]] virtual auto is_directory() const -> bool; /** @brief Returns whether the inode is a regular file. @return true if the inode is a regular file, false otherwise. */ - [[nodiscard]] auto is_regular() const -> bool; + [[nodiscard]] virtual auto is_regular() const -> bool; /** @brief Returns whether the inode is a device. @return true if the inode is a device, false otherwise. */ - [[nodiscard]] auto is_device() const -> bool; - - // TODO BA-FS26 avoid public member - public: - inode_kind m_kind{inode_kind::regular}; + [[nodiscard]] virtual auto is_device() const -> bool; }; } // namespace kernel::filesystem diff --git a/kernel/include/kernel/filesystem/open_file_table.hpp b/kernel/include/kernel/filesystem/open_file_table.hpp index 2f9a421..694f3b6 100644 --- a/kernel/include/kernel/filesystem/open_file_table.hpp +++ b/kernel/include/kernel/filesystem/open_file_table.hpp @@ -34,10 +34,10 @@ namespace kernel::filesystem /** @brief Add a file to the open file table. - @param f The file descriptor to add. + @param fd The file descriptor to add. @return The file descriptor index assigned to the file, or -1 on failure. */ - auto add_file(kstd::shared_ptr const & f) -> int; + auto add_file(kstd::shared_ptr const & fd) -> int; /** @brief Get a file from the open file table. diff --git a/kernel/include/kernel/filesystem/rootfs/inode.hpp b/kernel/include/kernel/filesystem/rootfs/inode.hpp index 37d0a30..e7c7eff 100644 --- a/kernel/include/kernel/filesystem/rootfs/inode.hpp +++ b/kernel/include/kernel/filesystem/rootfs/inode.hpp @@ -21,11 +21,6 @@ namespace kernel::filesystem::rootfs */ struct inode : kernel::filesystem::inode { - /** - @brief Create a rootfs inode. The inode is initialized with the appropriate kind (directory). - */ - inode(); - /** @brief Reads from the rootfs directory inode. @param buffer Destination buffer. @@ -57,6 +52,11 @@ namespace kernel::filesystem::rootfs */ auto lookup_child(std::string_view name) -> kstd::shared_ptr; + /** + // TODO BA-FS26 + */ + [[nodiscard]] auto is_directory() const -> bool override; + private: kstd::vector>> m_children; }; diff --git a/kernel/include/kernel/test_support/filesystem/inode.hpp b/kernel/include/kernel/test_support/filesystem/inode.hpp index 9d17917..8a76437 100644 --- a/kernel/include/kernel/test_support/filesystem/inode.hpp +++ b/kernel/include/kernel/test_support/filesystem/inode.hpp @@ -9,10 +9,10 @@ namespace kernel::tests::filesystem { struct inode : kernel::filesystem::inode { - inode(); - auto read(void * buffer, size_t offset, size_t size) const -> size_t override; auto write(void const * buffer, size_t offset, size_t size) -> size_t override; + + [[nodiscard]] auto is_regular() const -> bool override; }; } // namespace kernel::tests::filesystem -- cgit v1.2.3