ref: 41f9e6315b75a8ea422d1c0dbf0ed1999b80a7eb 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; }