ref: 2cf5623e6397d8b5c689f3c82e62eb45f0bc1200 dir: /libnpe/rename.c/
#include <unistd.h> int rename(char *old, char *new) { Dir d; nulldir(&d); d.name = new; return dirwstat(old, &d) > 0 ? 0 : -1; }