TODO: Write an actual chmod implementation

userspace/tests/test-chmod.c

@@ -0,0 +1,10 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int main(int argc, char * argv[]) {
+	struct stat s;
+	stat(argv[1], &s);
+	chmod(argv[1], s.st_mode | S_IXUSR | S_IXGRP | S_IXOTH);
+	return 0;
+}