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code.delx.au - pulseaudio/blob - src/utils/pacmd.c
4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <sys/select.h>
31 #include <sys/socket.h>
37 #include <pulse/error.h>
38 #include <pulse/util.h>
40 #include <pulsecore/core-util.h>
41 #include <pulsecore/log.h>
42 #include <pulsecore/pid.h>
44 int main(PA_GCC_UNUSED
int argc
, PA_GCC_UNUSED
char*argv
[]) {
48 struct sockaddr_un sa
;
49 char ibuf
[256], obuf
[256];
50 size_t ibuf_index
, ibuf_length
, obuf_index
, obuf_length
;
53 if (pa_pid_file_check_running(&pid
) < 0) {
54 pa_log("no PulseAudio daemon running");
58 if ((fd
= socket(PF_UNIX
, SOCK_STREAM
, 0)) < 0) {
59 pa_log("socket(PF_UNIX, SOCK_STREAM, 0): %s", strerror(errno
));
63 memset(&sa
, 0, sizeof(sa
));
64 sa
.sun_family
= AF_UNIX
;
65 pa_runtime_path("cli", sa
.sun_path
, sizeof(sa
.sun_path
));
67 for (i
= 0; i
< 5; i
++) {
70 if ((r
= connect(fd
, (struct sockaddr
*) &sa
, sizeof(sa
))) < 0 && (errno
!= ECONNREFUSED
&& errno
!= ENOENT
)) {
71 pa_log("connect(): %s", strerror(errno
));
78 if (pa_pid_file_kill(SIGUSR2
, NULL
) < 0) {
79 pa_log("failed to kill PulseAudio daemon.");
87 pa_log("daemon not responding.");
91 ibuf_index
= ibuf_length
= obuf_index
= obuf_length
= 0;
101 if (select(FD_SETSIZE
, &ifds
, &ofds
, NULL
, NULL
) < 0) {
102 pa_log("select(): %s", strerror(errno
));
106 if (FD_ISSET(0, &ifds
)) {
108 assert(!ibuf_length
);
110 if ((r
= read(0, ibuf
, sizeof(ibuf
))) <= 0) {
114 pa_log("read(): %s", strerror(errno
));
118 ibuf_length
= (size_t) r
;
122 if (FD_ISSET(fd
, &ifds
)) {
124 assert(!obuf_length
);
126 if ((r
= read(fd
, obuf
, sizeof(obuf
))) <= 0) {
130 pa_log("read(): %s", strerror(errno
));
134 obuf_length
= (size_t) r
;
138 if (FD_ISSET(1, &ofds
)) {
142 if ((r
= write(1, obuf
+ obuf_index
, obuf_length
)) < 0) {
143 pa_log("write(): %s", strerror(errno
));
147 obuf_length
-= (size_t) r
;
148 obuf_index
+= obuf_index
;
152 if (FD_ISSET(fd
, &ofds
)) {
156 if ((r
= write(fd
, ibuf
+ ibuf_index
, ibuf_length
)) < 0) {
157 pa_log("write(): %s", strerror(errno
));
161 ibuf_length
-= (size_t) r
;
162 ibuf_index
+= obuf_index
;
169 if (obuf_length
<= 0)
174 if (ibuf_length
<= 0)