From d061f31f33feccb4203979c6e8d9bbaeabecb453 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 13 May 2026 10:13:13 +0200
Subject: refactor ext2 map_inode_block_index_to_global_block_number

---
 kernel/include/kernel/filesystem/ext2/filesystem.hpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/filesystem/ext2/filesystem.hpp b/kernel/include/kernel/filesystem/ext2/filesystem.hpp
index 18ef372..32d9baf 100644
--- a/kernel/include/kernel/filesystem/ext2/filesystem.hpp
+++ b/kernel/include/kernel/filesystem/ext2/filesystem.hpp
@@ -13,6 +13,7 @@
 #include <cstddef>
 #include <cstdint>
 #include <string_view>
+#include <unistd.h>
 
 namespace kernel::filesystem::ext2
 {
@@ -82,14 +83,25 @@ namespace kernel::filesystem::ext2
     @return The global block number.
     */
     [[nodiscard]] auto map_inode_block_index_to_global_block_number(uint32_t inode_block_index, inode_data data) const
-        -> uint32_t;
+        -> ssize_t;
 
   private:
     [[nodiscard]] auto read_inode(uint32_t inode_number) const -> kstd::shared_ptr<kernel::filesystem::ext2::inode>;
     [[nodiscard]] auto read_block_number_at_index(uint32_t block_number, uint32_t index) const -> uint32_t;
 
+    [[nodiscard]] auto read_singly_indirect_block_number(uint32_t singly_indirect_block_number,
+                                                         uint32_t block_index_in_singly_indirect_block) const
+        -> uint32_t;
+    [[nodiscard]] auto read_doubly_indirect_block_number(uint32_t doubly_indirect_block_number,
+                                                         uint32_t block_index_in_doubly_indirect_block) const
+        -> uint32_t;
+    [[nodiscard]] auto read_triply_indirect_block_number(uint32_t triply_indirect_block_number,
+                                                         uint32_t block_index_in_triply_indirect_block) const
+        -> uint32_t;
+
     [[nodiscard]] auto get_inode_size() const -> size_t;
     [[nodiscard]] auto get_inode_block_count(inode_data const & data) const -> uint32_t;
+    [[nodiscard]] auto block_numbers_per_block() const -> uint32_t;
 
     superblock m_superblock{};
     kstd::vector<block_group_descriptor> m_block_group_descriptors;
-- 
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