feat: ETL migration, MPMC logging, device framework overhaul, VFS/FatFS, and coding standards by MRNIU · Pull Request #193 · Simple-XX/SimpleKernel

MRNIU · 2026-03-18T02:45:14Z

Summary

Major refactoring and feature additions over the past month, focusing on replacing custom kernel infrastructure with the Embedded Template Library (ETL), rewriting the logging subsystem, overhauling the device framework, and adding a VFS/FatFS filesystem layer.

310 files changed, +19,521 / -12,892

Key Changes

1. ETL (Embedded Template Library) Integration

Full migration from custom sk_std containers and utilities to ETL, a production-grade embedded C++ library:

Containers: Replaced sk_std::static_list, sk_std::vector, sk_std::priority_queue with etl::list, etl::vector, etl::priority_queue, etl::flat_map
I/O Ports: Migrated io::In/Out to etl::io_port_ro/rw across APIC, GIC, and VirtIO
Singletons: Singleton<T> → etl::singleton<T> with named aliases in kernel.h
Delegates: InterruptFunc pointer → etl::delegate for type-safe interrupt callbacks
Task FSM: TaskStatus enum → etl::fsm state machine with well-defined transitions
Flags: CloneFlags enum → etl::flags for type-safe bitmask operations
Observers: Added etl::observer-based tick and panic interfaces
Messages: Added etl::message_router ID registry for lifecycle and VirtIO events
Smart Pointers: Added sk_std::unique_ptr (with array specialization) and sk_std::shared_ptr (with atomic reference counting)
Removed unused sk_std implementations and their tests

2. Kernel Logging Rewrite (MPMC Lock-Free)

Complete rewrite of kernel_log.hpp:

MPMC queue: Lock-free multi-producer multi-consumer log queue, safe for SMP use
ETL format syntax: Type-safe {} placeholders replacing printf-style %d/%s
Per-CPU raw interfaces: klog::raw_err / LogLineRaw / LogStreamRaw for use in contexts where locking is unsafe (e.g., DumpStack)
Core ID in logs: Log output now includes the originating CPU core ID
Removed nanoprintf: Replaced entirely with ETL's print/format facilities; added etl_putchar shims for all three architectures

3. Device Framework Overhaul

Eliminated the device_framework submodule and inlined all driver code:

Inlined from device_framework: NS16550A, PL011, VirtIO (transport, virt_queue, device, defs), ACPI, MMIO accessor, storage, UART device, traits
Unified VirtioDriver: Single VirtioDriver class with runtime device-type dispatch, replacing the old per-device-type classes
DmaRegion abstraction: Replaced void* DMA buffers with typed DmaRegion + VirtToPhys translation
Driver restructuring: Reorganized src/device/ into per-driver and per-type subdirectories
ETL adoption in drivers: etl::optional, etl::delegate, etl::vector, etl::flat_map in driver registry and driver implementations
Removed dead code: Deleted CRTP ops/ layer, unused device wrappers, DriverDescriptor, DeviceStorage

4. Filesystem Layer (VFS + RamFS + FatFS)

New filesystem infrastructure:

VFS: Virtual filesystem layer with SpinLock-guarded operations, supporting mount/open/read/write/close
RamFS: In-memory filesystem using static bump pools (no heap allocation)
FatFS: FatFS VFS adapter with VirtIO-blk integration via block_device_provider
FileDescriptorTable: Per-process file descriptor management
System tests: RamFS and FatFS system tests via VFS API

5. Memory: IoBuffer Module

IoBuffer: RAII-managed aligned I/O buffers for DMA and device communication
dma_buffer field in DeviceNode for VirtIO block driver integration
IoBuffer::ToDmaRegion() for zero-copy DMA submission

6. SMP & Boot

Working on SMP support: log with core ID, boot_task initialization, TimerInit moved to main
Multi-string FDT compatible matching for device discovery

7. Style & Code Quality

Trailing return types in .cpp and arch.h
#pragma once across all headers
[[nodiscard]], [[maybe_unused]], [[gnu::xxx]] replacing __attribute__((xxx))
Coding standards enforcement across src/arch/, src/filesystem/, src/memory/
Replaced sk_assert with standard assert
Removed cppcheck (replaced by clang-tidy in pre-commit)

Subsystem Diff Summary

Subsystem	Files	Insertions	Deletions
`src/arch/`	49	+4,205	-767
`src/device/`	35	+4,736	—
`src/filesystem/`	32	+4,122	—
`src/task/`	24	+1,396	-659
`src/include/`	20	+1,262	-1,037
`tests/`	62	+4,172	-4,204
`src/memory/`	4	+610	—
`src/libc/` + `src/libcxx/`	29	+225	-2,258
Build system	9	+153	-182

Test Plan

cmake --preset build_riscv64 && cd build_riscv64 && make SimpleKernel && make run
cmake --preset build_aarch64 && cd build_aarch64 && make SimpleKernel && make run
cmake --preset build_x86_64 && cd build_x86_64 && make SimpleKernel && make run
make unit-test on host architecture
pre-commit run --all-files passes

Replace raw new TaskControlBlock with sk_std::make_unique and .release() before passing to AddTask. Ensures exception-safe construction while maintaining AddTask's raw pointer interface. Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Add comprehensive ETL migration plan (Tasks 0-10) for replacing sk_std:: containers with ETL-backed kstd:: wrappers. Remove superseded unique_ptr design/implementation docs. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Add etl::etl to kernel link libraries in compile_config.cmake. Add etl_profile.h with ETL_CPP23_SUPPORTED and ETL_NO_CHECKS defines. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Add kstd namespace wrappers around ETL containers: - kstd_pool.hpp: Pool<T,N> and PoolRef type aliases - kstd_vector: vector, static_vector, ivector - kstd_list: list, static_list, list_node_t - kstd_unique_ptr: custom unique_ptr implementation - kstd_priority_queue: reference-based priority queue - kstd_unordered_map: pool-backed unordered_map with std::hash Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Replace sk_std:: implementations with thin forwarding shims to kstd:: namespace. sk_vector, sk_list, sk_unique_ptr, sk_priority_queue, and sk_unordered_map now delegate to ETL-backed kstd wrappers. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Replace sk_std:: containers with kstd:: static containers in schedulers and task manager. Use static_vector, static_list, and static_unordered_map with compile-time sizes. Mark scheduler copy/move as deleted since ETL containers with internal storage are not copyable. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Delete sk_shared_ptr, sk_set, sk_rb_tree, and sk_queue which have no remaining consumers after the ETL migration. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Remove unit and system tests for sk_queue, sk_rb_tree, sk_set, and sk_shared_ptr. Update test CMakeLists.txt and system_test registration to reflect 22 remaining test cases. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai> Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…/Write helpers Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…Read/Write Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…c xAPIC branches Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…lkDriver::Probe Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…uler Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…nScheduler Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…y_queue in CfsScheduler Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

… CpuSchedData Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Copilot

Pull request overview

Large refactor to migrate core kernel infrastructure to ETL, introduce a new device framework, and add a VFS layer with RamFS/FatFS integration (plus build-system updates to support the new components).

Changes:

Replace multiple custom utilities (singletons, IO access, logging formatting) with ETL-based equivalents.
Add new device framework (bus enumeration + driver registry) and unified VirtIO driver with VFS block-device adapter.
Add VFS + RamFS + FatFS filesystem stack and update build/QEMU tooling to generate and attach a root filesystem image.

Reviewed changes

Copilot reviewed 175 out of 327 changed files in this pull request and generated 14 comments.

Show a summary per file

File	Description
src/include/kernel_elf.hpp	Switch to `#pragma once`, ETL singleton alias, log formatting updates, member renames.
src/include/kernel_config.hpp	New kernel-wide sizing constants for tasks/observers.
src/include/kernel.h	Add `DeviceInit()` / `FileSystemInit()` declarations and switch to trailing return style.
src/include/io_buffer.hpp	New `IoBuffer`/`DmaRegion` interfaces for DMA-safe buffers.
src/include/io.hpp	Remove legacy raw MMIO helpers (replaced by ETL IO ports).
src/include/interrupt_base.h	Introduce `etl::delegate`-based handlers and external IRQ registration API.
src/include/config.h	Remove legacy config include shim.
src/include/basic_info.hpp	Switch to ETL singleton alias and modernize struct initialization.
src/filesystem/vfs/write.cpp	New VFS write syscall entry with permission checks.
src/filesystem/vfs/vfs_internal.hpp	Internal VFS helpers and global state definition.
src/filesystem/vfs/vfs.cpp	Core VFS state + helper implementations + Init.
src/filesystem/vfs/unlink.cpp	New unlink implementation using dentries/inode ops.
src/filesystem/vfs/seek.cpp	New seek implementation with fallback default behavior.
src/filesystem/vfs/rmdir.cpp	New rmdir implementation with empty-dir check.
src/filesystem/vfs/readdir.cpp	New readdir wrapper enforcing directory type.
src/filesystem/vfs/read.cpp	New read wrapper.
src/filesystem/vfs/open.cpp	New open/create path using lookup + inode ops.
src/filesystem/vfs/mkdir.cpp	New mkdir implementation building dentries from inode ops.
src/filesystem/vfs/lookup.cpp	New path resolver with mount-point support and dentry caching.
src/filesystem/vfs/include/mount.hpp	New mount table + mount-point structures.
src/filesystem/vfs/include/filesystem.hpp	New filesystem interface for mount/sync/inode management.
src/filesystem/vfs/include/block_device.hpp	New block-device abstraction for FS adapters.
src/filesystem/vfs/close.cpp	New close wrapper with refcount decrement.
src/filesystem/vfs/CMakeLists.txt	Build rules for VFS interface target.
src/filesystem/ramfs/CMakeLists.txt	Build rules for RamFS interface target.
src/filesystem/include/file_descriptor.hpp	New per-task FD table interface.
src/filesystem/filesystem.cpp	`FileSystemInit()` mounting RamFS + optional FatFS on VirtIO blk.
src/filesystem/file_descriptor.cpp	FD table implementation (alloc/free/dup/close-all).
src/filesystem/fatfs/include/ffconf.h	FatFS configuration provided via forced include.
src/filesystem/fatfs/diskio.cpp	FatFS disk HAL wired to `vfs::BlockDevice`.
src/filesystem/fatfs/CMakeLists.txt	Build rules for FatFS wrapper + forced config include.
src/filesystem/CMakeLists.txt	Aggregate filesystem target linking VFS/RamFS/FatFS/device.
src/filesystem/AGENTS.md	Documentation for new filesystem architecture and conventions.
src/driver/pl011/pl011.cpp	Remove legacy PL011 driver implementation (moved to new device framework).
src/driver/pl011/include/pl011.h	Remove legacy PL011 interface.
src/driver/pl011/README.md	Remove legacy PL011 docs.
src/driver/pl011/CMakeLists.txt	Remove old PL011 CMake target.
src/driver/ns16550a/ns16550a.cpp	Remove legacy NS16550A driver implementation (moved to new device framework).
src/driver/ns16550a/include/ns16550a.h	Remove legacy NS16550A interface.
src/driver/ns16550a/README.md	Remove legacy NS16550A docs.
src/driver/ns16550a/CMakeLists.txt	Remove old NS16550A CMake target.
src/driver/include/driver.h	Remove legacy driver entrypoint.
src/driver/driver.cpp	Remove legacy driver stub.
src/driver/acpi/acpi.cpp	Remove legacy ACPI stub implementation.
src/driver/acpi/README.md	Remove legacy ACPI docs.
src/driver/acpi/CMakeLists.txt	Remove legacy ACPI target.
src/driver/README.md	Remove legacy driver directory README.
src/driver/CMakeLists.txt	Remove legacy driver umbrella library.
src/device/virtio/virtio_driver.cpp	New unified VirtIO probe and block-device exposure through `DeviceNode`.
src/device/virtio/virt_queue/virtqueue_base.hpp	New virtqueue base using C++23 explicit object parameter patterns.
src/device/virtio/virt_queue/misc.hpp	New virtqueue misc helpers (`AlignUp`, `IoVec`, etc.).
src/device/virtio/transport/pci.hpp	Placeholder PCI transport implementation.
src/device/virtio/device/net/virtio_net.h	Placeholder VirtIO net header.
src/device/virtio/device/input/virtio_input.h	Placeholder VirtIO input header.
src/device/virtio/device/gpu/virtio_gpu.h	Placeholder VirtIO GPU header.
src/device/virtio/device/console/virtio_console.h	Placeholder VirtIO console header.
src/device/virtio/device/blk/virtio_blk_vfs_adapter.hpp	Adapter exposing VirtIO blk via `vfs::BlockDevice`.
src/device/virtio/defs.h	VirtIO device IDs and reserved feature bits.
src/device/virtio/CMakeLists.txt	Build rules for VirtIO driver target.
src/device/pl011/pl011_driver.hpp	New PL011 driver entry for device framework.
src/device/pl011/CMakeLists.txt	Build rules for PL011 driver target.
src/device/ns16550a/ns16550a_driver.hpp	New NS16550A driver entry for device framework.
src/device/ns16550a/CMakeLists.txt	Build rules for NS16550A driver target.
src/device/include/platform_bus.hpp	New FDT-based platform bus enumerator.
src/device/include/device_node.hpp	New `DeviceNode` schema + bus concept.
src/device/include/device_manager.hpp	New device manager singleton managing nodes and drivers.
src/device/device_manager.cpp	Implement `ProbeAll` / lookups for device manager.
src/device/device.cpp	`DeviceInit()` entrypoint registering drivers and enumerating platform bus.
src/device/acpi/acpi_driver.hpp	New ACPI driver header placeholder.
src/device/acpi/acpi.hpp	ACPI table structures migrated to new device folder + modernized packing.
src/device/acpi/CMakeLists.txt	Build rules for ACPI driver target.
src/device/CMakeLists.txt	Aggregate device target linking all driver targets.
src/device/AGENTS.md	Documentation for new device framework architecture/conventions.
src/arch/x86_64/timer.cpp	Modernize signatures and remove legacy singleton include.
src/arch/x86_64/syscall.cpp	Modernize syscall handler signature.
src/arch/x86_64/sipi.h	Remove duplicate SIPI header (moved under include/).
src/arch/x86_64/macro.S	Remove stale brief comment.
src/arch/x86_64/include/sipi.h	`#pragma once`, inline const, rename packed struct.
src/arch/x86_64/include/interrupt.h	Update to delegate-based interrupt handlers + ETL singleton alias.
src/arch/x86_64/early_console.cpp	Switch early console to ETL putchar integration.
src/arch/x86_64/backtrace.cpp	Switch to new KernelElf member names + ETL singleton usage.
src/arch/x86_64/apic/io_apic.cpp	Replace raw IO with ETL IO ports and new formatting.
src/arch/x86_64/apic/include/io_apic.h	`#pragma once`, trailing returns, init defaults.
src/arch/x86_64/apic/include/apic.h	Add `[[nodiscard]]` + trailing returns and modernize members.
src/arch/x86_64/apic/README.md	Update docs to ETL singleton aliases.
src/arch/riscv64/timer.cpp	Switch timer registration to delegates + singleton aliases.
src/arch/riscv64/syscall.cpp	Modernize syscall handler signature.
src/arch/riscv64/include/interrupt.h	Delegate-based handler arrays + external IRQ API.
src/arch/riscv64/early_console.cpp	Switch early console output to `etl_putchar`.
src/arch/riscv64/boot.S	Stack sizing based on config constant (not fixed shift).
src/arch/riscv64/backtrace.cpp	Switch to new KernelElf member names + singleton usage.
src/arch/riscv64/arch_main.cpp	Switch to ETL singleton creation + format-string updates.
src/arch/aarch64/timer.cpp	Delegate-based timer handler + singleton usage.
src/arch/aarch64/syscall.cpp	Use `std::array` for syscall args; update dispatcher call.
src/arch/aarch64/interrupt.cpp	Add external IRQ registration + robust MMIO mapping error logs.
src/arch/aarch64/include/pl011_singleton.h	New PL011 singleton alias header for early console.
src/arch/aarch64/include/interrupt.h	Delegate-based IRQ handlers + expose GIC helper calls.
src/arch/aarch64/gic/README.md	Fix method naming in docs (`SetUp`).
src/arch/aarch64/early_console.cpp	Switch early console to new PL011 singleton and `etl_putchar`.
src/arch/aarch64/boot.S	Stack sizing based on config constant (not fixed shift).
src/arch/aarch64/backtrace.cpp	Switch to new KernelElf member names + singleton usage.
src/arch/aarch64/arch_main.cpp	Switch to ETL singleton creation + updated logging.
src/arch/CMakeLists.txt	Link arch to interrupt-controller subdirs + device drivers needed by arch.
src/arch/AGENTS.md	New architecture documentation.
src/CMakeLists.txt	Add memory/device/filesystem subdirectories and link targets.
docs/CMakeLists.txt	Rename Doxygen project/target from `doc` to `docs`.
docs/2_调试输出.md	Update docs to new singleton/console initialization.
docs/1_系统启动.md	Update boot-flow docs to new singleton usage.
docs/0_工具链.md	Remove cppcheck suppression mention.
doc/task_unit_test_new_design.md	Remove outdated task unit test design doc.
cmake/x86_64-gcc.cmake	Normalize CMake style and improve toolchain checks.
cmake/riscv64-gcc.cmake	Normalize CMake style and improve toolchain checks.
cmake/project_config.cmake	Add additional clean targets for bin/lib outputs.
cmake/functions.cmake	Generate `rootfs.img` and wire into QEMU dtb generation/run targets.
cmake/compile_config.cmake	Add ETL + FatFS compile defs and link dependencies; adjust `-O2` in Release.
cmake/clang.cmake	Remove clang toolchain file.
cmake/3rd.cmake	Remove nanoprintf and cppcheck; add ETL + FatFS third-party integrations.
CMakePresets.json	Add QEMU device flags and attach generated `rootfs.img` drives; tweak defaults.
CMakeLists.txt	Switch subdirectory from `doc/` to `docs/`.
AGENTS.md	Add repository-level agent documentation and conventions.
3rd/optee/optee_os	Update submodule commit.
3rd/optee/optee_client	Update submodule commit.
3rd/optee/build	Update submodule commit.
3rd/nanoprintf	Remove nanoprintf submodule reference.
3rd/fatfs	Add FatFS submodule reference.
3rd/etl	Add ETL submodule reference.
3rd/dtc	Update submodule commit.
3rd/cpu_io	Update submodule commit.
3rd/MPMCQueue/test/test.cpp	Minor include ordering/spacing.
3rd/MPMCQueue/test/CMakeLists.txt	Normalize CMake style.
3rd/MPMCQueue/CMakeLists.txt	Normalize CMake style.
3rd/EasyLogger	Add EasyLogger submodule reference.
.gitmodules	Remove nanoprintf; add fatfs/etl/EasyLogger submodules.
.github/workflows/workflow.yml	Update docs target name and GitHub Pages publish directory.

  // 检查 IRQ 是否在有效范围内
  auto max_entries = GetMaxRedirectionEntries();
  if (irq >= max_entries) {
-    klog::Err("IRQ %u exceeds maximum entries %u\n", irq, max_entries);
-    return;
+    klog::Err("IRQ {} exceeds maximum entries {}", irq, max_entries);
  }


+auto TimerInitSMP() -> void {
  // 开启时钟中断
  cpu_io::Sie::Stie::Set();

  // 设置初次时钟中断时间
  sbi_set_timer(interval);
 }


+  if (strlen(path) >= kMaxPathLength) {
+    return std::unexpected(Error(ErrorCode::kFsInvalidPath));
+  }


+    char parent_path[512];
+    char file_name[256];
+    const char* last_slash = strrchr(path, '/');
+    if (last_slash == nullptr || last_slash == path) {
+      strncpy(parent_path, "/", sizeof(parent_path));
+      strncpy(file_name, path[0] == '/' ? path + 1 : path, sizeof(file_name));
+    } else {
+      size_t parent_len = last_slash - path;
+      if (parent_len >= sizeof(parent_path)) {
+        parent_len = sizeof(parent_path) - 1;
+      }
+      strncpy(parent_path, path, parent_len);
+      parent_path[parent_len] = '\0';
+      strncpy(file_name, last_slash + 1, sizeof(file_name));
+    }
+    file_name[sizeof(file_name) - 1] = '\0';


+    return std::unexpected(Error(ErrorCode::kOutOfMemory));
+  }
+
+  strncpy(new_dentry->name, dir_name, sizeof(new_dentry->name) - 1);


+      // Allocate slot DMA buffer
+      auto [slot_size, slot_align] =
+          virtio::blk::VirtioBlk<>::GetRequiredSlotMemSize();
+      slot_buffers_[idx] = kstd::make_unique<IoBuffer>(slot_size);


+    auto* ptr = static_cast<uint8_t*>(buf);
+    for (uint32_t i = 0; i < count; ++i) {
+      auto result = dev_->Read(lba + i, ptr + i * kSectorSize);
+      if (!result) {
+        return std::unexpected(Error(result.error().code));
+      }
+    }
+    return static_cast<size_t>(count) * kSectorSize;
+  }
+
+  auto WriteSectors(uint64_t lba, uint32_t count, const void* buf)
+      -> Expected<size_t> override {
+    const auto* ptr = static_cast<const uint8_t*>(buf);
+    for (uint32_t i = 0; i < count; ++i) {
+      auto result = dev_->Write(lba + i, ptr + i * kSectorSize);
+      if (!result) {
+        return std::unexpected(Error(result.error().code));
+      }


+    case GET_SECTOR_COUNT:
+      static_cast<LBA_t*>(buff)[0] = static_cast<LBA_t>(dev->GetSectorCount());
+      return RES_OK;
+    case GET_SECTOR_SIZE:
+      static_cast<WORD*>(buff)[0] = static_cast<WORD>(dev->GetSectorSize());
+      return RES_OK;


+      -> Expected<DmaRegion> {
+    if (offset + len > size) {
+      return std::unexpected(Error{ErrorCode::kInvalidArgument});
+    }
+    return DmaRegion{
+        .virt = static_cast<uint8_t*>(virt) + offset,
+        .phys = phys + offset,
+        .size = len,
+    };


+    const char* last_slash = strrchr(path, '/');
+    if (last_slash == nullptr || last_slash == path) {
+      strncpy(parent_path, "/", sizeof(parent_path));
+      strncpy(file_name, path[0] == '/' ? path + 1 : path, sizeof(file_name));
+    } else {


Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

…ce, and DMA - io_apic: add early return after OOB IRQ check in SetIrqRedirection/MaskIrq/UnmaskIrq - mkdir: add NUL-termination after strncpy on dentry name - lookup: replace broken mount-point loop with FindByMountDentry - file_descriptor: fix open_count_ over-counting in SetupStandardFiles - io_buffer: fix size_t overflow in SubRegion bounds check - open/mkdir: reject path components exceeding buffer sizes - file_descriptor: use address-based lock ordering in move-assignment - virtio_driver: pass slot_align to IoBuffer for consistency - diskio: add nullptr guard for buff in disk_ioctl Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

MRNIU and others added 30 commits February 27, 2026 14:00

3rd: add etl

6251dc8

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

3rd: add etl

9e03bb0

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor: kstd

a13729e

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

fix: ut

7ee0001

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

chore: add .worktrees to gitignore

e833100

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(aarch64): remove unused io.hpp include from interrupt files

162dfcb

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(aarch64/gic): migrate io::In/Out to etl::io_port in GIC Read…

e0cb80b

…/Write helpers Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(x86_64/apic): migrate io::In/Out to etl::io_port in IoApic::…

efa44c5

…Read/Write Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(x86_64/apic): migrate io::In/Out to etl::io_port in LocalApi…

eb5fafb

…c xAPIC branches Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(device/virtio): migrate io::In to etl::io_port_ro in VirtioB…

63bf620

…lkDriver::Probe Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(include): delete io.hpp after full etl::io_port migration

9d47679

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

fix(apic/virtio): use void* cast in etl::io_port_* constructors

4934653

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

fix(aarch64/gic): use void* cast in etl::io_port_* constructors

a4bd4fe

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Merge branch 'feature/etl-io-port-migration'

87e0380

feat(task): add kernel_config.hpp for centralized capacity constants

65a576d

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

feat(task): add etl::hash specialization for ResourceId

934bea3

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(task): replace kstd::static_list with etl::list in FifoSched…

794c568

…uler Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(task): replace kstd::static_list with etl::list in RoundRobi…

3884581

…nScheduler Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(task): replace kstd priority_queue+storage with etl::priorit…

99f52c6

…y_queue in CfsScheduler Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(task): replace kstd containers with etl:: in TaskManager and…

1becaf7

… CpuSchedData Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

refactor(task): update GetThreadGroup return type to etl::vector

bd9d27d

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

fix(task): add .full() checks before all etl container insertions

2da99e7

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

MRNIU added 25 commits March 11, 2026 14:17

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550166e

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

docs: update AGENTS.md

3ab5d4a

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

test: fix st

b640df2

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

style: update

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Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

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490b88f

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

test: fix st

dd2a75d

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

test: fix st

69a10d4

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

test: fix st

a6dcb17

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

docs: update AGENTS.md

3d264d3

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

Copilot AI review requested due to automatic review settings March 18, 2026 02:45

Copilot AI reviewed Mar 18, 2026

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MRNIU added 2 commits March 18, 2026 11:09

fix: warnning

d3549d1

Signed-off-by: Niu Zhihong <zhihong@nzhnb.com>

MRNIU merged commit fab4dba into Simple-XX:main Mar 18, 2026
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feat: ETL migration, MPMC logging, device framework overhaul, VFS/FatFS, and coding standards#193

feat: ETL migration, MPMC logging, device framework overhaul, VFS/FatFS, and coding standards#193
MRNIU merged 3891 commits intoSimple-XX:mainfrom
MRNIU:main

MRNIU commented Mar 18, 2026 •

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MRNIU commented Mar 18, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Summary

Key Changes

1. ETL (Embedded Template Library) Integration

2. Kernel Logging Rewrite (MPMC Lock-Free)

3. Device Framework Overhaul

4. Filesystem Layer (VFS + RamFS + FatFS)

5. Memory: IoBuffer Module

6. SMP & Boot

7. Style & Code Quality

Subsystem Diff Summary

Test Plan

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MRNIU commented Mar 18, 2026 •

edited

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