kapi/fs: add file status and type types.

3 files changed, 74 insertions, 0 deletions

diff --git a/kapi/kapi/filesystem.hpp b/kapi/kapi/filesystem.hpp
index b64d251d..2b5dc827 100644
--- a/kapi/kapi/filesystem.hpp
+++ b/kapi/kapi/filesystem.hpp
@@ -2,6 +2,8 @@
 #define TEACHOS_KAPI_FILESYSTEM_HPP
 
 #include <kapi/filesystem/device_number.hpp>  // IWYU pragma: export
+#include <kapi/filesystem/file_status.hpp>    // IWYU pragma: export
+#include <kapi/filesystem/file_type.hpp>      // IWYU pragma: export
 
 #include <kstd/result.hpp>
 #include <kstd/system_error.hpp>
diff --git a/kapi/kapi/filesystem/file_status.hpp b/kapi/kapi/filesystem/file_status.hpp
new file mode 100644
index 00000000..df48f9db
--- /dev/null
+++ b/kapi/kapi/filesystem/file_status.hpp
@@ -0,0 +1,26 @@
+#ifndef TEACH_KAPI_FILESYSTEM_FILE_STATUS_HPP
+#define TEACH_KAPI_FILESYSTEM_FILE_STATUS_HPP
+
+// IWYU pragma: private, include <kapi/filesystem.hpp>
+
+#include <kapi/filesystem/device_number.hpp>
+
+#include <kstd/units.hpp>
+
+#include <cstdint>
+
+namespace kapi::filesystem
+{
+
+  struct file_status
+  {
+    std::uint32_t mode{};
+    kstd::units::bytes size{};
+    device_number raw_device{};
+    std::uint64_t inode_number{};
+    std::uint32_t link_count{};
+  };
+
+}  // namespace kapi::filesystem
+
+#endif
diff --git a/kapi/kapi/filesystem/file_type.hpp b/kapi/kapi/filesystem/file_type.hpp
new file mode 100644
index 00000000..cb346b71
--- /dev/null
+++ b/kapi/kapi/filesystem/file_type.hpp
@@ -0,0 +1,46 @@
+#ifndef TEACH_KAPI_FILESYSTEM_FILE_TYPE_HPP
+#define TEACH_KAPI_FILESYSTEM_FILE_TYPE_HPP
+
+// IWYU pragma: private, include <kapi/filesystem.hpp>
+
+#include <cstdint>
+
+namespace kapi::filesystem
+{
+
+  enum struct file_type : std::uint32_t
+  {
+    fifo = 0x1000,
+    character_device = 0x2000,
+    directory = 0x4000,
+    block_device = 0x6000,
+    regular = 0x8000,
+    symbolic_link = 0xa000,
+    socket = 0xc000,
+  };
+
+  constexpr auto inline file_type_mask = std::uint32_t{0xf000};
+
+  [[nodiscard]] constexpr auto inline is_block_device(std::uint32_t mode) noexcept -> bool
+  {
+    return static_cast<file_type>(mode & file_type_mask) == file_type::block_device;
+  }
+
+  [[nodiscard]] constexpr auto inline is_character_device(std::uint32_t mode) noexcept -> bool
+  {
+    return static_cast<file_type>(mode & file_type_mask) == file_type::character_device;
+  }
+
+  [[nodiscard]] constexpr auto inline is_directory(std::uint32_t mode) noexcept -> bool
+  {
+    return static_cast<file_type>(mode & file_type_mask) == file_type::directory;
+  }
+
+  [[nodiscard]] constexpr auto inline is_regular(std::uint32_t mode) noexcept -> bool
+  {
+    return static_cast<file_type>(mode & file_type_mask) == file_type::regular;
+  }
+
+}  // namespace kapi::filesystem
+
+#endif