chiark / gitweb /
partial tests for kvp.c
[disorder] / lib / speaker-protocol.c
CommitLineData
460b9539 1/*
2 * This file is part of DisOrder.
ea410ba1 3 * Copyright (C) 2005, 2007 Richard Kettlewell
460b9539 4 *
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.
9 *
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.
14 *
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
18 * USA
19 */
ea410ba1 20/** @file lib/speaker-protocol.c
21 * @brief Speaker/server protocol support
22 */
460b9539 23
24#include <config.h>
25#include "types.h"
26
27#include <sys/socket.h>
28#include <string.h>
29#include <errno.h>
84aa9f93
RK
30#include <unistd.h>
31#include <stddef.h>
460b9539 32
ea410ba1 33#include "speaker-protocol.h"
460b9539 34#include "log.h"
35
fbf86993 36/** @brief Send a speaker message
ea410ba1 37 * @param fd File descriptor to send to
38 * @param sm Pointer to message
ea410ba1 39 */
84aa9f93 40void speaker_send(int fd, const struct speaker_message *sm) {
460b9539 41 int ret;
42
460b9539 43 do {
84aa9f93 44 ret = write(fd, sm, sizeof *sm);
460b9539 45 } while(ret < 0 && errno == EINTR);
46 if(ret < 0)
84aa9f93 47 fatal(errno, "write");
460b9539 48}
49
ea410ba1 50/** @brief Receive a speaker message
51 * @param fd File descriptor to read from
52 * @param sm Where to store received message
ea410ba1 53 * @return -ve on @c EAGAIN, 0 at EOF, +ve on success
ea410ba1 54 */
84aa9f93 55int speaker_recv(int fd, struct speaker_message *sm) {
460b9539 56 int ret;
57
460b9539 58 do {
84aa9f93 59 ret = read(fd, sm, sizeof *sm);
460b9539 60 } while(ret < 0 && errno == EINTR);
61 if(ret < 0) {
62 if(errno != EAGAIN) fatal(errno, "recvmsg");
63 return -1;
64 }
460b9539 65 return ret;
66}
67
68/*
69Local Variables:
70c-basic-offset:2
71comment-column:40
72fill-column:79
73indent-tabs-mode:nil
74End:
75*/