Function NgAllocRecvData

tools/libnetgraph/sock.c:256–274

* Identical to NgRecvData() except buffer is dynamically allocated. */

 * Identical to NgRecvData() except buffer is dynamically allocated.
 */
int
NgAllocRecvData(int ds, u_char **buf, char *hook)
{
	int len;
#ifndef FSTACK
	socklen_t optlen;

	optlen = sizeof(len);
	if (getsockopt(ds, SOL_SOCKET, SO_RCVBUF, &len, &optlen) == -1 ||
#else
	len = NGCTL_DEFAULT_RCVBUF;
	if (
#endif
	    (*buf = malloc(len)) == NULL)
		return (-1);
	if ((len = NgRecvData(ds, *buf, len, hook)) < 0)
		free(*buf);
	return (len);
}

/*
 * Write a packet to a data socket. The packet will be sent