unlinkat
int unlinkat(int fd, const char *path, int flag);
extern int unlinkat(int fd, const char *path, int flag);
if (unlinkat(parentFD, entryName, 0) != 0) {
return unlinkat(fd, path, flag);
HIDDEN_FUNCTION(unlinkat);
return unlinkat(AT_FDCWD, path, 0);