modified some syscall code in rlibc, fs stuff

kernel/vfs.c

@@ -0,0 +1,12 @@
+#include "vfs.h"
+#include "lib/memory.h"
+#include <string.h>
+
+vfs_node_t* root = NULL;
+
+void vfs_create_root() {
+    root = kalloc(sizeof(vfs_node_t));
+    memset((uint8_t*)root->name, 0, 128);
+    memcpy("root", root->name, 4);
+    root->flags |= VFS_DIRECTORY;
+}