Important: License changed from MIT to GPL.

Rewrote the README based on the actual project.

41 files changed, 200 insertions, 0 deletions

diff --git a/include/common/fcntl.h b/include/common/fcntl.h
index 24d40fa..6059538 100644
--- a/include/common/fcntl.h
+++ b/include/common/fcntl.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 
 #define O_RDONLY 0x000
diff --git a/include/common/types.h b/include/common/types.h
index 8924699..aa2cb08 100644
--- a/include/common/types.h
+++ b/include/common/types.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 
 typedef unsigned char       uint8_t;
diff --git a/include/drivers/plic.h b/include/drivers/plic.h
index 11e8c8a..cdcd0ce 100644
--- a/include/drivers/plic.h
+++ b/include/drivers/plic.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/drivers/uart.h b/include/drivers/uart.h
index 85b04b0..1cdc938 100644
--- a/include/drivers/uart.h
+++ b/include/drivers/uart.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "drivers/uart_color.h"
diff --git a/include/drivers/uart_color.h b/include/drivers/uart_color.h
index a63d57a..7ecc28b 100644
--- a/include/drivers/uart_color.h
+++ b/include/drivers/uart_color.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 // ANSI Escape Codes for Modern Terminal Colors
 #define ANSI_RESET "\033[0m"
 #define ANSI_RED "\033[31m"
diff --git a/include/drivers/virtio.h b/include/drivers/virtio.h
index ea2c9a6..9fda8cf 100644
--- a/include/drivers/virtio.h
+++ b/include/drivers/virtio.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/fs/fat32.h b/include/fs/fat32.h
index 1bd60ef..63d62ae 100644
--- a/include/fs/fat32.h
+++ b/include/fs/fat32.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "fs/fs.h"
 #include "kernel/buf.h"
diff --git a/include/fs/file.h b/include/fs/file.h
index a92d8f8..9aff1af 100644
--- a/include/fs/file.h
+++ b/include/fs/file.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "fs/fs.h"
diff --git a/include/fs/fs.h b/include/fs/fs.h
index 235ec80..967858b 100644
--- a/include/fs/fs.h
+++ b/include/fs/fs.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "kernel/spinlock.h"
diff --git a/include/fs/stat.h b/include/fs/stat.h
index cdce05a..e60ae42 100644
--- a/include/fs/stat.h
+++ b/include/fs/stat.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/buf.h b/include/kernel/buf.h
index 099523d..d0d849c 100644
--- a/include/kernel/buf.h
+++ b/include/kernel/buf.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "kernel/spinlock.h"
diff --git a/include/kernel/config.h b/include/kernel/config.h
index 56a1aa6..45d85cd 100644
--- a/include/kernel/config.h
+++ b/include/kernel/config.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/cpu.h b/include/kernel/cpu.h
index 92890b6..62bdc17 100644
--- a/include/kernel/cpu.h
+++ b/include/kernel/cpu.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "kernel/proc_def.h"
diff --git a/include/kernel/elf.h b/include/kernel/elf.h
index c216f1c..30193d2 100644
--- a/include/kernel/elf.h
+++ b/include/kernel/elf.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/exec.h b/include/kernel/exec.h
index 964e3bb..304e03f 100644
--- a/include/kernel/exec.h
+++ b/include/kernel/exec.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 
 namespace Exec
diff --git a/include/kernel/mm.h b/include/kernel/mm.h
index 3b59edb..e3de09a 100644
--- a/include/kernel/mm.h
+++ b/include/kernel/mm.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/pmm.h b/include/kernel/pmm.h
index d31473f..1fc3070 100644
--- a/include/kernel/pmm.h
+++ b/include/kernel/pmm.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "kernel/spinlock.h"
diff --git a/include/kernel/proc.h b/include/kernel/proc.h
index c740d53..e11dc47 100644
--- a/include/kernel/proc.h
+++ b/include/kernel/proc.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "kernel/proc_def.h"
diff --git a/include/kernel/proc_def.h b/include/kernel/proc_def.h
index c671f8d..50f27d7 100644
--- a/include/kernel/proc_def.h
+++ b/include/kernel/proc_def.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "common/fcntl.h"
diff --git a/include/kernel/runqueue.h b/include/kernel/runqueue.h
index ea6e4cc..14704ce 100644
--- a/include/kernel/runqueue.h
+++ b/include/kernel/runqueue.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "kernel/spinlock.h"
 #include "kernel/proc_def.h"
diff --git a/include/kernel/sbi.h b/include/kernel/sbi.h
index ec262ee..a6be5b3 100644
--- a/include/kernel/sbi.h
+++ b/include/kernel/sbi.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/slab.h b/include/kernel/slab.h
index 650f8a9..bb7b699 100644
--- a/include/kernel/slab.h
+++ b/include/kernel/slab.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/spinlock.h b/include/kernel/spinlock.h
index 3102e68..1511199 100644
--- a/include/kernel/spinlock.h
+++ b/include/kernel/spinlock.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/kernel/sync.h b/include/kernel/sync.h
index 83d88c8..7f7c208 100644
--- a/include/kernel/sync.h
+++ b/include/kernel/sync.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 #include "kernel/spinlock.h"
diff --git a/include/kernel/syscall.h b/include/kernel/syscall.h
index 348fd63..af4c474 100644
--- a/include/kernel/syscall.h
+++ b/include/kernel/syscall.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+*/
+
 #pragma once
 
 #define SYS_putc        1
diff --git a/include/kernel/timer.h b/include/kernel/timer.h
index 193c47d..8b97bbe 100644
--- a/include/kernel/timer.h
+++ b/include/kernel/timer.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #include "common/types.h"
 
 namespace Timer{
diff --git a/include/kernel/trap.h b/include/kernel/trap.h
index 35b225c..ddc1d12 100644
--- a/include/kernel/trap.h
+++ b/include/kernel/trap.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/lib/string.h b/include/lib/string.h
index 309bf02..6a74942 100644
--- a/include/lib/string.h
+++ b/include/lib/string.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #pragma once
 #include "common/types.h"
 
diff --git a/include/ulib/assert.h b/include/ulib/assert.h
index a083aff..014be9b 100644
--- a/include/ulib/assert.h
+++ b/include/ulib/assert.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _ASSERT_H
 #define _ASSERT_H
 
diff --git a/include/ulib/cstdlib b/include/ulib/cstdlib
index 69b9bb6..8b07338 100644
--- a/include/ulib/cstdlib
+++ b/include/ulib/cstdlib
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _CPP_CSTDLIB
 #define _CPP_CSTDLIB
 
diff --git a/include/ulib/cstring b/include/ulib/cstring
index bb8ab44..d65dc8d 100644
--- a/include/ulib/cstring
+++ b/include/ulib/cstring
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _CPP_CSTRING
 #define _CPP_CSTRING
 
diff --git a/include/ulib/ctypes.h b/include/ulib/ctypes.h
index 3e0bc22..1ec204e 100644
--- a/include/ulib/ctypes.h
+++ b/include/ulib/ctypes.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _CTYPE_H
 #define _CTYPE_H
 
diff --git a/include/ulib/cxx.cc b/include/ulib/cxx.cc
index d24de1e..f454fea 100644
--- a/include/ulib/cxx.cc
+++ b/include/ulib/cxx.cc
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #include "ulib/stdlib.h"
 
 
diff --git a/include/ulib/errno.h b/include/ulib/errno.h
index 03ff8fd..19da4d1 100644
--- a/include/ulib/errno.h
+++ b/include/ulib/errno.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _ERRNO_H
 #define _ERRNO_H
 
diff --git a/include/ulib/iostream b/include/ulib/iostream
index 83ed74c..b05f603 100644
--- a/include/ulib/iostream
+++ b/include/ulib/iostream
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _IOSTREAM
 #define _IOSTREAM
 
diff --git a/include/ulib/limits.h b/include/ulib/limits.h
index 030ffbb..b317e6a 100644
--- a/include/ulib/limits.h
+++ b/include/ulib/limits.h
@@ -1,3 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
 #pragma once
 
 #define CHAR_BIT 8
diff --git a/include/ulib/stdio.h b/include/ulib/stdio.h
index 2e19b87..a6df21d 100644
--- a/include/ulib/stdio.h
+++ b/include/ulib/stdio.h
@@ -1,3 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
 /* Standard I/O Library for Lume OS */
 
 #ifndef _STDIO_H
diff --git a/include/ulib/stdlib.h b/include/ulib/stdlib.h
index 7dc325e..6d8f75d 100644
--- a/include/ulib/stdlib.h
+++ b/include/ulib/stdlib.h
@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
+
 #ifndef _STDLIB_H
 #define _STDLIB_H
 
diff --git a/include/ulib/string.h b/include/ulib/string.h
index 6e87157..c7519ea 100644
--- a/include/ulib/string.h
+++ b/include/ulib/string.h
@@ -1,3 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
 #ifndef _STRING_H
 #define _STRING_H
 
diff --git a/include/ulib/types.h b/include/ulib/types.h
index 2f15bf1..69ee233 100644
--- a/include/ulib/types.h
+++ b/include/ulib/types.h
@@ -1,3 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
 #ifndef _ULIB_TYPES_H
 #define _ULIB_TYPES_H
 
diff --git a/include/user/user.h b/include/user/user.h
index 345f8be..0be036b 100644
--- a/include/user/user.h
+++ b/include/user/user.h
@@ -1,3 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard QIn
+ */
 #pragma once
 typedef unsigned long long uint64;