From faebb71b8a84e33f4f2b3f8f70f845011483c5c5 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Wed, 1 May 2024 18:38:22 +0200
Subject: Kernel/Keyboard: Only write to buffer after it is initialized

---
 kernel/drivers/keyboard.c | 7 +++++--
 kernel/init/kernel.c      | 2 +-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/drivers/keyboard.c b/kernel/drivers/keyboard.c
index a120788..fb85e39 100644
--- a/kernel/drivers/keyboard.c
+++ b/kernel/drivers/keyboard.c
@@ -86,7 +86,7 @@ u8 capital_ascii_table[] = {
     ' ', // ;
 };
 
-vfs_inode_t *kb_inode;
+vfs_inode_t *kb_inode = NULL;
 
 u8 keyboard_to_ascii(u16 key, u8 capital) {
   if ((key & 0xFF) > sizeof(ascii_table)) {
@@ -112,9 +112,12 @@ struct KEY_EVENT {
 extern process_t *ready_queue;
 
 void int_keyboard(reg_t *frame) {
-  outb(0x20, 0x20);
   u16 c;
   c = inb(PS2_REG_DATA);
+  outb(0x20, 0x20);
+  if (!kb_inode) {
+    return;
+  }
   int released = 0;
   if (c & 0x80) {
     switch ((c & ~(0x80)) & 0xFF) {
diff --git a/kernel/init/kernel.c b/kernel/init/kernel.c
index 0a2243d..090e03f 100644
--- a/kernel/init/kernel.c
+++ b/kernel/init/kernel.c
@@ -85,7 +85,7 @@ void kernel_main(u32 kernel_end, unsigned long magic, unsigned long addr,
   install_keyboard();
   klog("PS2 Keyboard driver installed", LOG_SUCCESS);
 
-global_socket_init();
+  global_socket_init();
 
   vfs_mount("/dev", devfs_mount());
   assert(ahci_init());
-- 
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