Add a "fork" of musl as //fusl.

fusl/src/misc/ioctl.c

Index: fusl/src/misc/ioctl.c
diff --git a/fusl/src/misc/ioctl.c b/fusl/src/misc/ioctl.c
new file mode 100644
index 0000000000000000000000000000000000000000..5a41f0e846456e5647500c0da4c23f5b39065dc6
--- /dev/null
+++ b/fusl/src/misc/ioctl.c
@@ -0,0 +1,13 @@
+#include <sys/ioctl.h>
+#include <stdarg.h>
+#include "syscall.h"
+
+int ioctl(int fd, int req, ...)
+{
+	void *arg;
+	va_list ap;
+	va_start(ap, req);
+	arg = va_arg(ap, void *);
+	va_end(ap);
+	return syscall(SYS_ioctl, fd, req, arg);
+}