add directory kernel

kernel/0.00/linux-0.01/lib/open.c

@@ -0,0 +1,19 @@
+#define __LIBRARY__
+#include <unistd.h>
+#include <stdarg.h>
+
+int open(const char * filename, int flag, ...)
+{
+	register int res;
+	va_list arg;
+
+	va_start(arg,flag);
+	__asm__("int $0x80"
+		:"=a" (res)
+		:"0" (__NR_open),"b" (filename),"c" (flag),
+		"d" (va_arg(arg,int)));
+	if (res>=0)
+		return res;
+	errno = -res;
+	return -1;
+}