refactor: promote new architecture to repository root

Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.

1 files changed, 0 insertions, 90 deletions

diff --git a/na/fs/fs_struct.cc b/na/fs/fs_struct.cc
deleted file mode 100644
index 090819f..0000000
--- a/na/fs/fs_struct.cc
+++ /dev/null
@@ -1,90 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* Copyright (C) 2026 Richard Qin */
-
-/*
- * fs_struct.cc — Per-task filesystem context (cwd, root)
- */
-
-#include <lume/fs_struct.h>
-#include <lume/slab.h>
-
-/* ================================================================== */
-/*  alloc_fs_struct                                                   */
-/* ================================================================== */
-
-fs_struct* alloc_fs_struct()
-{
-    auto* fs = new fs_struct{};
-    if (!fs) return nullptr;
-
-    fs->count.store(1);
-    fs->umask = 022;
-    fs->root = {nullptr, nullptr};
-    fs->pwd  = {nullptr, nullptr};
-
-    return fs;
-}
-
-/* ================================================================== */
-/*  put_fs_struct                                                     */
-/* ================================================================== */
-
-void put_fs_struct(fs_struct* fs)
-{
-    if (!fs) return;
-
-    int old = fs->count.fetch_sub(1);
-    if (old > 1) return;
-
-    path_put(&fs->root);
-    path_put(&fs->pwd);
-    delete fs;
-}
-
-/* ================================================================== */
-/*  copy_fs_struct — for fork without CLONE_FS                        */
-/* ================================================================== */
-
-fs_struct* copy_fs_struct(const fs_struct* old_fs)
-{
-    auto* fs = alloc_fs_struct();
-    if (!fs) return nullptr;
-
-    fs->umask = old_fs->umask;
-
-    fs->root = old_fs->root;
-    path_get(&fs->root);
-
-    fs->pwd = old_fs->pwd;
-    path_get(&fs->pwd);
-
-    return fs;
-}
-
-/* ================================================================== */
-/*  set_fs_root / set_fs_pwd                                          */
-/* ================================================================== */
-
-void set_fs_root(fs_struct* fs, const path* p)
-{
-    path old_root;
-    {
-        LockGuard guard(fs->lock);
-        old_root = fs->root;
-        fs->root = *p;
-        path_get(p);
-    }
-    path_put(&old_root);
-}
-
-void set_fs_pwd(fs_struct* fs, const path* p)
-{
-    path old_pwd;
-    {
-        LockGuard guard(fs->lock);
-        old_pwd = fs->pwd;
-        fs->pwd = *p;
-        path_get(p);
-    }
-    path_put(&old_pwd);
-}