Function xwrite

wrapper.c:250–266

* xwrite() is the same a write(), but it automatically restarts write() * operations with a recoverable error (EAGAIN and EINTR). xwrite() DOES NOT * GUARANTEE that "len" bytes is written even if the operation is successful. */

 * GUARANTEE that "len" bytes is written even if the operation is successful.
 */
ssize_t xwrite(int fd, const void *buf, size_t len)
{
	ssize_t nr;
	if (len > MAX_IO_SIZE)
		len = MAX_IO_SIZE;
	while (1) {
		nr = write(fd, buf, len);
		if (nr < 0) {
			if (errno == EINTR)
				continue;
			if (handle_nonblock(fd, POLLOUT, errno))
				continue;
		}

		return nr;
	}
}

/*
 * xpread() is the same as pread(), but it automatically restarts pread()