Function sam_safe_write

lib/sam.c:352–375

* Wrapper on top of write(2) function. It handles EAGAIN and EINTR states and sends whole buffer if possible. */

 * Wrapper on top of write(2) function. It handles EAGAIN and EINTR states and sends whole buffer if possible.
 */
static size_t sam_safe_write (
	int d,
	const void *buf,
	size_t nbyte)
{
	ssize_t bytes_write;
	ssize_t tmp_bytes_write;

	bytes_write = 0;

	do {
		tmp_bytes_write = write (d, (const char *)buf + bytes_write,
			(nbyte - bytes_write > SSIZE_MAX) ? SSIZE_MAX : nbyte - bytes_write);

		if (tmp_bytes_write == -1) {
			if (!(errno == EAGAIN || errno == EINTR))
				return -1;
		} else {
			bytes_write += tmp_bytes_write;
		}
	} while (bytes_write != nbyte);

	return (bytes_write);
}

/*
 * Wrapper on top of read(2) function. It handles EAGAIN and EINTR states and reads whole buffer if possible.