remove explicit framebuffer in kernel. reduce locking in syscalls

1 files changed, 12 insertions, 1 deletions

diff --git a/lib/string.c b/lib/string.c
index 28436d5..f4d42fb 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -46,5 +46,16 @@ char *str_toupper(char *s, size_t n)
 
 int strncmp(const char *s1, const char *s2, size_t n)
 {
-    return memcmp(s1, s2, n);
+    size_t i = 0;
+    for(; s1[i] && s2[i] && i < n; i++) {
+        int diff = s1[i] - s2[i];
+        if(diff) return diff;
+    }
+    return s1[i] - s2[i];
+}
+
+char *strncpy(size_t n, char *restrict s1, const char *restrict s2)
+{
+    for(size_t i = 0; s2[i] && i < n; i++) s1[i] = s2[i];
+    return s1;
 }