From 468d5968a922459041b0d710cb42f5fdf7551ab8 Mon Sep 17 00:00:00 2001
From: Rick Rongen <rickrongen@outlook.com>
Date: Sat, 30 Jan 2021 20:20:12 +0100
Subject: [PATCH] feat: implemented strcpy, used constant

---
 kernel/drivers/keyboard.c | 4 ++--
 kernel/libc/libc.c        | 4 ++++
 kernel/libc/libc.h        | 2 ++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/kernel/drivers/keyboard.c b/kernel/drivers/keyboard.c
index 3ac8d7c..dc0d5fe 100644
--- a/kernel/drivers/keyboard.c
+++ b/kernel/drivers/keyboard.c
@@ -39,7 +39,7 @@ static void keyboard_callback(registers_t regs) {
     if ((status & 0b00000001) == 0) {
         return;
     }
-    unsigned char scancode = port_byte_in(0x60);
+    unsigned char scancode = port_byte_in(PORT_PS2_DATA);
     print_scancode(scancode);
 }
 
@@ -63,7 +63,7 @@ void print_scancode(unsigned char scancode) {
             code -= 0x20; // to lowercase
         }
 
-        memcpy(msg, MSG_KEY, strlen(MSG_KEY));
+        strcpy(msg, MSG_KEY);
         msg[strlen(msg) - 3] = code;
         kprint(msg);
     }
diff --git a/kernel/libc/libc.c b/kernel/libc/libc.c
index 81cf78c..9702d7d 100644
--- a/kernel/libc/libc.c
+++ b/kernel/libc/libc.c
@@ -14,6 +14,10 @@ int memcpy(char *dst, char *src, int amount) {
     return 0;
 }
 
+int strcpy(char *dst, char *src) {
+    return memcpy(dst, src, strlen(src) + 1);
+}
+
 int memset(char *dst, char data, int amount) {
     for (int i = 0; i < amount; ++i) {
         dst[i] = data;
diff --git a/kernel/libc/libc.h b/kernel/libc/libc.h
index 53c07ea..67f8a97 100644
--- a/kernel/libc/libc.h
+++ b/kernel/libc/libc.h
@@ -10,6 +10,8 @@
 
 int memcpy(char *dst, char *src, int amount);
 
+int strcpy(char *dst, char *src);
+
 int memset(char *dst, char data, int amount);
 
 int itoa(int i, char *target);