2 * This file is part of DisOrder.
3 * Copyright (C) 2005, 2007 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file lib/speaker-protocol.c
21 * @brief Speaker/server protocol support
27 #include <sys/socket.h>
33 #include "speaker-protocol.h"
36 /** @brief Send a speaker message
37 * @param fd File descriptor to send to
38 * @param sm Pointer to message
40 void speaker_send(int fd, const struct speaker_message *sm) {
44 ret = write(fd, sm, sizeof *sm);
45 } while(ret < 0 && errno == EINTR);
47 fatal(errno, "write");
50 /** @brief Receive a speaker message
51 * @param fd File descriptor to read from
52 * @param sm Where to store received message
53 * @return -ve on @c EAGAIN, 0 at EOF, +ve on success
55 int speaker_recv(int fd, struct speaker_message *sm) {
59 ret = read(fd, sm, sizeof *sm);
60 } while(ret < 0 && errno == EINTR);
62 if(errno != EAGAIN) fatal(errno, "recvmsg");