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.

4 files changed, 0 insertions, 332 deletions

diff --git a/include/fs/fat32.h b/include/fs/fat32.h
deleted file mode 100644
index 63d62ae..0000000
--- a/include/fs/fat32.h
+++ /dev/null
@@ -1,122 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2026 Richard QIn
- */
-
-#pragma once
-#include "fs/fs.h"
-#include "kernel/buf.h"
-
-// Disk Layout Structures (On-Disk)
-
-// FAT32 Boot Sector (BPB)
-struct FAT32_BPB
-{
-    uint8 jmpBoot[3];
-    char oemName[8];
-    uint16 bytesPerSector;
-    uint8 secPerClus;
-    uint16 reservedSecCnt;
-    uint8 numFATs;
-    uint16 rootEntCnt;
-    uint16 totSec16;
-    uint8 media;
-    uint16 FATSz16;
-    uint16 secPerTrk;
-    uint16 numHeads;
-    uint32 hiddSec;
-    uint32 totSec32;
-    uint32 FATSz32;
-    uint16 extFlags;
-    uint16 FSVer;
-    uint32 rootClus;
-    uint16 FSInfo;
-    uint16 bkBootSec;
-    uint8 reserved[12];
-    uint8 drvNum;
-    uint8 reserved1;
-    uint8 bootSig;
-    uint32 volID;
-    char volLab[11];
-    char filSysType[8];
-} __attribute__((packed));
-
-// FAT32 Directory Entry (32 bytes)
-struct FAT32_DirEnt
-{
-    char name[11]; // 8.3 filename
-    uint8 attr;    // File attributes
-    uint8 ntRes;
-    uint8 crtTimeTenth;
-    uint16 crtTime;
-    uint16 crtDate;
-    uint16 lstAccDate;
-    uint16 fstClusHI; // High 16 bits of first cluster
-    uint16 wrtTime;
-    uint16 wrtDate;
-    uint16 fstClusLO; // Low 16 bits of first cluster
-    uint32 fileSize;
-} __attribute__((packed));
-
-#define ATTR_READ_ONLY 0x01
-#define ATTR_HIDDEN 0x02
-#define ATTR_SYSTEM 0x04
-#define ATTR_VOLUME_ID 0x08
-#define ATTR_DIRECTORY 0x10
-#define ATTR_ARCHIVE 0x20
-#define ATTR_LONG_NAME 0x0F
-
-// In-Memory Classes
-
-class FAT32FileSystem;
-
-class FAT32Inode : public Inode
-{
-public:
-    FAT32FileSystem *fs;
-
-    // FAT32 Private Data
-    uint32 first_clus;  // The starting cluster number of the file
-    uint32 parent_clus; // Starting cluster number of the parent directory
-    uint32 dir_offset;  // The byte offset of this directory entry in the parent directory
-    uint32 ent_sec;     // Sector number of the directory entry
-    uint32 ent_off;     // Offset of the directory entry within the sector
-
-    FAT32Inode() : fs(nullptr), first_clus(0) {}
-    // Implement VFS Interface
-    void update() override;
-    int read(char *dst, uint32 off, uint32 n, int isUser) override;
-    int write(const char *src, uint32 off, uint32 n, int isUser) override;
-    Inode *lookup(const char *name) override;
-    Inode *create(const char *name, short type, short major, short minor) override;
-    void truncate() override;
-    int unlink(const char *name) override;
-};
-
-class FAT32FileSystem : public FileSystem
-{
-public:
-    uint32 fat_start_sector;
-    uint32 data_start_sector;
-    uint32 root_cluster;
-    uint32 sectors_per_cluster;
-    uint32 bytes_per_cluster;
-    uint32 fat_sz;                  // Size of the FAT table (number of sectors)
-
-    void init() override;
-    Inode* root() override;
-
-    // Helper functions
-    uint32 next_cluster(uint32 cluster);    // Check the FAT table for the next cluster
-    uint32 alloc_cluster();                 // Assign a new cluster
-    uint32 cluster_to_sector(uint32 cluster);
-
-    // directory entry parsing
-    void read_dir_ent(struct FAT32_DirEnt *de, char *filename);
-    // Release the entire cluster chain starting from the cluster
-    void free_cluster_chain(uint32 cluster);
-};
-
-extern FAT32FileSystem fat32_fs;
-
-void fat32_test();
\ No newline at end of file
diff --git a/include/fs/file.h b/include/fs/file.h
deleted file mode 100644
index 9aff1af..0000000
--- a/include/fs/file.h
+++ /dev/null
@@ -1,78 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2026 Richard QIn
- */
-
-#pragma once
-#include "common/types.h"
-#include "fs/fs.h"
-
-enum FileType
-{
-    FD_NONE,
-    FD_INODE,
-    FD_DEVICE,
-    FD_PIPE
-};
-
-class Pipe;
-
-struct file
-{
-    enum FileType type;
-    int ref;
-    char readable;
-    char writable;
-
-    Pipe *pipe; // pipeline pointer
-    Inode *ip;         // VFS Inode
-    uint32 off;        // Current Offset
-};
-
-class Pipe
-{
-public:
-    static constexpr uint32_t SIZE = 512;
-
-    Pipe() : nread(0), nwrite(0), read_open(true), write_open(true)
-    {
-        lock.init("pipe");
-    }
-
-    // forbid copy
-    Pipe(const Pipe &) = delete;
-    Pipe &operator=(const Pipe &) = delete;
-
-    ~Pipe()
-    {
-        //
-    }
-
-    // creates a pair of connected file objects
-    static int create_pair(struct file **f0, struct file **f1);
-
-    int read(uint64_t addr, int n);
-    int write(uint64_t addr, int n);
-    void close(bool is_writer);
-
-private:
-    Spinlock lock;
-    char data[SIZE];
-    uint32_t nread;  // read
-    uint32_t nwrite; // write
-    bool read_open;
-    bool write_open;
-};
-
-namespace FileTable
-{
-    void init();
-    struct file *alloc();             // Allocate a free file handle
-    struct file *dup(struct file *f); // Duplicate handle (sys_dup)
-    void close(struct file *f);       // Close handle
-
-    int stat(struct file *f, uint64 addr);
-    int read(struct file *f, uint64 addr, int n);
-    int write(struct file *f, uint64 addr, int n);
-    int lseek(struct file *f, int offset, int whence);
-} // namespace FileTable
diff --git a/include/fs/fs.h b/include/fs/fs.h
deleted file mode 100644
index b511a84..0000000
--- a/include/fs/fs.h
+++ /dev/null
@@ -1,105 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2026 Richard QIn
- */
-
-#pragma once
-#include "common/types.h"
-#include "kernel/spinlock.h"
-#include "fs/stat.h"
-
-class FileSystem;
-
-// VFS Inode (Abstract Base Class)
-
-class Inode
-{
-private:
-    ;
-public:
-    // VFS Common Fields
-    uint32 dev;  // Device number (VirtIO Block ID)
-    uint32 inum; // Inode number
-    int ref_cnt; // Memory reference count (number of struct file or processes referencing it)
-    int valid;   // Whether the data is valid (whether metadata has been read from disk)
-
-    Mutex lock; // Sleep lock: protects internal Inode data and atomicity of read/write operations
-
-    // Metadata Cache (for speeding up getattr)
-    short type;  // T_DIR, T_FILE, T_DEVICE
-    short major; // Major device number (only for T_DEVICE)
-    short minor; // Minor device number (only for T_DEVICE)
-    short nlink; // Number of hard links
-    uint32 size; // File size
-
-    Inode() : ref_cnt(0), valid(0)
-    {
-        lock.init("inode");
-    }
-    virtual ~Inode() {}
-
-    /* Core Operation Interface (Subclass Must Implement) */
-    // Update metadata
-    // Sync size, type, links, etc. from memory back to disk
-    virtual void update() = 0;
-    // Read content
-    // Read n bytes from the file at offset into dst
-    // Returns the actual number of bytes read, returns -1 on error
-    virtual int read(char *dst, uint32 off, uint32 n, int isUser) = 0;
-    // 3. Write content
-    // Write n bytes from src to the file at the given offset
-    // Need to handle file growth
-    virtual int write(const char *src, uint32 off, uint32 n, int isUser) = 0;
-    // Directory Lookup (only valid when type == T_DIR)
-    // Search for a file named 'name' in the current directory and return its Inode pointer (locked)
-    // Return nullptr if not found
-    virtual Inode *lookup(const char *name) = 0;
-    // Create file/directory (only effective when type == T_DIR)
-    // Create a new entry in the current directory
-    virtual Inode *create(const char *name, short type, short major, short minor) = 0;
-    // Get file status (populate the stat structure)
-    // Default implementation, subclasses can override to provide more detailed information
-    virtual void getattr(struct kstat *st);
-    // Truncate file (set size to 0, release all data blocks)
-    virtual void truncate() = 0;
-    // Delete the file named 'name' from the directory (Unlink)
-    virtual int unlink(const char *name) = 0;
-};
-
-// File System Abstraction (SuperBlock)
-class FileSystem
-{
-private:
-    ;
-public:
-    virtual void init() = 0;
-    virtual Inode* root() = 0;
-    virtual ~FileSystem() {};
-};
-
-// Inode Cache Interface (Global Function)
-namespace VFS
-{
-    void init();
-
-    // Decrease the reference count, and if it reaches 0, free the memory
-    void iput(Inode *ip);
-    // Increase reference count
-    Inode *idup(Inode *ip);
-    // lock and load data
-    void ilock(Inode *ip);
-    // unlock
-    void iunlock(Inode *ip);
-    void iunlockput(Inode *ip);
-    // Mount the root filesystem
-    void mount_root(Inode *root);
-    // Get system root node
-    Inode *get_root();
-    // Path Analysis
-    Inode *namei(const char *path);
-    // Find the parent directory inode of the path, and copy the last part of the path (the file name) into the name buffer
-    Inode *nameiparent(const char *path, char *name);
-    // Register a file system
-    void register_fs(FileSystem *fs);
-
-} // namespace VFS
diff --git a/include/fs/stat.h b/include/fs/stat.h
deleted file mode 100644
index e60ae42..0000000
--- a/include/fs/stat.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2026 Richard QIn
- */
-
-#pragma once
-#include "common/types.h"
-
-#define T_DIR 1    // Directory
-#define T_FILE 2   // File
-#define T_DEVICE 3 // Device
-
-struct kstat
-{
-    int dev;        // File System's disk device
-    uint32 ino;     // Inode number
-    short type;     //Type of file
-    short nlink;    // Number of links to file
-    uint64 size;    // Size of file in bytes
-
-    uint32 mode;  // Protection: rwx
-    uint32 uid;   // User ID
-    uint32 gid;   // Group ID
-    uint32 atime; // Access time
-    uint32 mtime; // Modified time
-    uint32 ctime; // Change time
-};