Add file system pointer to ext2 inode

3 files changed, 15 insertions, 4 deletions

diff --git a/kernel/include/kernel/filesystem/ext2/inode.hpp b/kernel/include/kernel/filesystem/ext2/inode.hpp
index 4284e6f..9318008 100644
--- a/kernel/include/kernel/filesystem/ext2/inode.hpp
+++ b/kernel/include/kernel/filesystem/ext2/inode.hpp
@@ -11,6 +11,8 @@
 
 namespace kernel::filesystem::ext2
 {
+  struct filesystem;
+
   struct [[gnu::packed]] inode_data
   {
     uint16_t mode;
@@ -35,12 +37,13 @@ namespace kernel::filesystem::ext2
 
   struct inode : kernel::filesystem::inode
   {
-    inode();
+    explicit inode(filesystem * fs);
 
     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;
 
     inode_data m_data{};
+    filesystem * m_filesystem;
   };
 }  // namespace kernel::filesystem::ext2
 
diff --git a/kernel/src/filesystem/ext2/filesystem.cpp b/kernel/src/filesystem/ext2/filesystem.cpp
index 56c0b88..514bb59 100644
--- a/kernel/src/filesystem/ext2/filesystem.cpp
+++ b/kernel/src/filesystem/ext2/filesystem.cpp
@@ -136,7 +136,7 @@ namespace kernel::filesystem::ext2
     auto const inode_table_offset = static_cast<size_t>(inode_table_start_block) * block_size;
     auto const inode_offset = inode_table_offset + inode_index_within_group * get_inode_size();
 
-    auto new_inode = kstd::make_shared<inode>();
+    auto new_inode = kstd::make_shared<inode>(this);
     kernel::devices::block_device_utils::read(m_device, &new_inode->m_data, inode_offset, sizeof(inode_data));
 
     // TODO BA-FS26 improve inode_kind really needed? or just map it to the mode bits?
diff --git a/kernel/src/filesystem/ext2/inode.cpp b/kernel/src/filesystem/ext2/inode.cpp
index b75969a..4d36e66 100644
--- a/kernel/src/filesystem/ext2/inode.cpp
+++ b/kernel/src/filesystem/ext2/inode.cpp
@@ -1,14 +1,22 @@
 #include "kernel/filesystem/ext2/inode.hpp"
 
+#include "kapi/system.hpp"
+
 #include "kernel/filesystem/inode.hpp"
 
 #include <cstddef>
 
 namespace kernel::filesystem::ext2
 {
-  inode::inode()
+  inode::inode(filesystem * fs)
       : kernel::filesystem::inode(inode_kind::regular)
-  {}
+      , m_filesystem(fs)
+  {
+    if (!m_filesystem)
+    {
+      kapi::system::panic("[EXT2] ext2::inode constructed with filesystem null pointer");
+    }
+  }
 
   auto inode::read(void * /*buffer*/, size_t /*offset*/, size_t /*size*/) const -> size_t
   {