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-rw-r--r--dev/kernel/FSKit/Ext2IFS.h133
1 files changed, 0 insertions, 133 deletions
diff --git a/dev/kernel/FSKit/Ext2IFS.h b/dev/kernel/FSKit/Ext2IFS.h
deleted file mode 100644
index 87095bc6..00000000
--- a/dev/kernel/FSKit/Ext2IFS.h
+++ /dev/null
@@ -1,133 +0,0 @@
-#pragma once
-
-#include <FSKit/Ext2.h>
-#include <KernelKit/DriveMgr.h>
-#include <KernelKit/HeapMgr.h>
-#include <NeKit/Utils.h>
-#include <NeKit/KernelPanic.h>
-#include <NeKit/ErrorOr.h>
-#include <KernelKit/KPC.h>
-
-namespace Ext2 {
-
-/// @brief Context for an EXT2 filesystem on a given drive
-struct Context {
- Kernel::DriveTrait* drive{nullptr};
- EXT2_SUPER_BLOCK* superblock{nullptr};
-
- /// @brief context with a drive
- explicit Context(Kernel::DriveTrait* drv) : drive(drv) {}
-
- /// @brief Clean up
- ~Context() {
- if (superblock) {
- Kernel::mm_free_ptr(superblock);
- superblock = nullptr;
- }
- }
-
- Context(const Context&) = delete;
- Context& operator=(const Context&) = delete;
-
- Context(Context&& other) noexcept : drive(other.drive), superblock(other.superblock) {
- other.drive = nullptr;
- other.superblock = nullptr;
- }
-
- Context& operator=(Context&& other) noexcept {
- if (this != &other) {
- if (superblock) {
- Kernel::mm_free_ptr(superblock);
- }
- drive = other.drive;
- superblock = other.superblock;
- other.drive = nullptr;
- other.superblock = nullptr;
- }
- return *this;
- }
-
- inline Kernel::UInt32 BlockSize() const {
- if (!superblock) return kExt2FSBlockSizeBase;
- return kExt2FSBlockSizeBase << superblock->fLogBlockSize;
- }
-};
-
-inline bool ext2_read_block(Kernel::DriveTrait* drv, Kernel::UInt32 lba, void* buffer, Kernel::UInt32 size) {
- if (!drv || !buffer) return false;
-
- Kernel::DriveTrait::DrivePacket pkt{};
- pkt.fPacketContent = buffer;
- pkt.fPacketSize = size;
- pkt.fPacketLba = lba;
- drv->fInput(pkt);
- return pkt.fPacketGood;
-}
-
-inline bool ext2_write_block(Kernel::DriveTrait* drv, Kernel::UInt32 lba, const void* buffer, Kernel::UInt32 size) {
- if (!drv || !buffer) return false;
-
- Kernel::DriveTrait::DrivePacket pkt{};
- pkt.fPacketContent = const_cast<void*>(buffer);
- pkt.fPacketSize = size;
- pkt.fPacketLba = lba;
- drv->fOutput(pkt);
- return pkt.fPacketGood;
-}
-
-// Load superblock
-inline Kernel::ErrorOr<EXT2_SUPER_BLOCK*> ext2_load_superblock(Context* ctx) {
- if (!ctx || !ctx->drive) return Kernel::ErrorOr<EXT2_SUPER_BLOCK*>(Kernel::kErrorInvalidData);
-
- auto buf = Kernel::mm_alloc_ptr(sizeof(EXT2_SUPER_BLOCK), true, false);
- if (!buf) return Kernel::ErrorOr<EXT2_SUPER_BLOCK*>(Kernel::kErrorHeapOutOfMemory);
-
- Kernel::UInt32 blockLba = kExt2FSSuperblockOffset / ctx->drive->fSectorSz;
- if (!ext2_read_block(ctx->drive, blockLba, buf, sizeof(EXT2_SUPER_BLOCK))) {
- Kernel::mm_free_ptr(buf);
- return Kernel::ErrorOr<EXT2_SUPER_BLOCK*>(Kernel::kErrorDisk);
- }
-
- auto sb = reinterpret_cast<EXT2_SUPER_BLOCK*>(buf);
- if (sb->fMagic != kExt2FSMagic) {
- Kernel::mm_free_ptr(buf);
- return Kernel::ErrorOr<EXT2_SUPER_BLOCK*>(Kernel::kErrorInvalidData);
- }
-
- ctx->superblock = sb;
- return Kernel::ErrorOr<EXT2_SUPER_BLOCK*>(sb);
-}
-
-// Load inode
-inline Kernel::ErrorOr<Ext2Node*> ext2_load_inode(Context* ctx, Kernel::UInt32 inodeNumber) {
- if (!ctx || !ctx->superblock) return Kernel::ErrorOr<Ext2Node*>(Kernel::kErrorInvalidData);
-
- auto nodePtr = Kernel::mm_alloc_ptr(sizeof(Ext2Node), true, false);
- if (!nodePtr) return Kernel::ErrorOr<Ext2Node*>(Kernel::kErrorHeapOutOfMemory);
-
- auto ext2Node = reinterpret_cast<Ext2Node*>(nodePtr);
- ext2Node->inodeNumber = inodeNumber;
-
- // Compute block group and index within group
- Kernel::UInt32 inodesPerGroup = ctx->superblock->fInodesPerGroup;
- Kernel::UInt32 group = (inodeNumber - 1) / inodesPerGroup;
- Kernel::UInt32 index = (inodeNumber - 1) % inodesPerGroup;
-
- // dummy: just offset first inode
- Kernel::UInt32 inodeTableBlock = ctx->superblock->fFirstInode + group;
-
- if (!ext2_read_block(ctx->drive, inodeTableBlock, &ext2Node->inode, sizeof(EXT2_INODE))) {
- Kernel::mm_free_ptr(nodePtr);
- return Kernel::ErrorOr<Ext2Node*>(Kernel::kErrorDisk);
- }
-
- ext2Node->cursor = 0;
- return Kernel::ErrorOr<Ext2Node*>(ext2Node);
-}
-
-inline Kernel::UInt32 inode_offset(const Context* ctx, Kernel::UInt32 inodeNumber) {
- if (!ctx || !ctx->superblock) return 0;
- return ((inodeNumber - 1) % ctx->superblock->fInodesPerGroup) * ctx->superblock->fInodeSize;
-}
-
-} // namespace Ext2