Commit | Line | Data |
---|---|---|
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 | |
05b75f8d | 24 | #include "common.h" |
460b9539 | 25 | |
26 | #include <sys/socket.h> | |
460b9539 | 27 | #include <errno.h> |
84aa9f93 RK |
28 | #include <unistd.h> |
29 | #include <stddef.h> | |
460b9539 | 30 | |
ea410ba1 | 31 | #include "speaker-protocol.h" |
460b9539 | 32 | #include "log.h" |
33 | ||
fbf86993 | 34 | /** @brief Send a speaker message |
ea410ba1 | 35 | * @param fd File descriptor to send to |
36 | * @param sm Pointer to message | |
ea410ba1 | 37 | */ |
84aa9f93 | 38 | void speaker_send(int fd, const struct speaker_message *sm) { |
460b9539 | 39 | int ret; |
40 | ||
460b9539 | 41 | do { |
84aa9f93 | 42 | ret = write(fd, sm, sizeof *sm); |
460b9539 | 43 | } while(ret < 0 && errno == EINTR); |
44 | if(ret < 0) | |
84aa9f93 | 45 | fatal(errno, "write"); |
460b9539 | 46 | } |
47 | ||
ea410ba1 | 48 | /** @brief Receive a speaker message |
49 | * @param fd File descriptor to read from | |
50 | * @param sm Where to store received message | |
ea410ba1 | 51 | * @return -ve on @c EAGAIN, 0 at EOF, +ve on success |
ea410ba1 | 52 | */ |
84aa9f93 | 53 | int speaker_recv(int fd, struct speaker_message *sm) { |
460b9539 | 54 | int ret; |
55 | ||
460b9539 | 56 | do { |
84aa9f93 | 57 | ret = read(fd, sm, sizeof *sm); |
460b9539 | 58 | } while(ret < 0 && errno == EINTR); |
59 | if(ret < 0) { | |
60 | if(errno != EAGAIN) fatal(errno, "recvmsg"); | |
61 | return -1; | |
62 | } | |
460b9539 | 63 | return ret; |
64 | } | |
65 | ||
66 | /* | |
67 | Local Variables: | |
68 | c-basic-offset:2 | |
69 | comment-column:40 | |
70 | fill-column:79 | |
71 | indent-tabs-mode:nil | |
72 | End: | |
73 | */ |