atomicio6
return atomicio6(f, fd, _s, n, NULL, NULL);
atomicio6(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n,
if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
j = atomicio6(read, remin, cp, amt,
if (atomicio6(read, conn->fd_in, p, 4, sftpio,
if (atomicio6(read, conn->fd_in, p, msg_len, sftpio,