static int do_write(struct userdata *u) {
ssize_t r;
pa_assert(u);
if (!pa_iochannel_is_writable(u->io))
return 0;
if (u->write_data) {
pa_assert(u->write_index < u->write_length);
if ((r = pa_iochannel_write(u->io, (uint8_t*) u->write_data + u->write_index, u->write_length - u->write_index)) <= 0) {
pa_log("write() failed: %s", pa_cstrerror(errno));
return -1;
}
u->write_index += (size_t) r;
pa_assert(u->write_index <= u->write_length);
if (u->write_index == u->write_length) {
pa_xfree(u->write_data);
u->write_data = NULL;
u->write_index = u->write_length = 0;
}
}
if (!u->write_data && u->state == STATE_PREPARE) {
int so_sndbuf = 0;
socklen_t sl = sizeof(int);
/* OK, we're done with sending all control data we need to, so
* let's hand the socket over to the IO thread now */
pa_assert(u->fd < 0);
u->fd = pa_iochannel_get_send_fd(u->io);
pa_iochannel_set_noclose(u->io, TRUE);
pa_iochannel_free(u->io);
u->io = NULL;
pa_make_tcp_socket_low_delay(u->fd);
if (getsockopt(u->fd, SOL_SOCKET, SO_SNDBUF, &so_sndbuf, &sl) < 0)
pa_log_warn("getsockopt(SO_SNDBUF) failed: %s", pa_cstrerror(errno));
else {
pa_log_debug("SO_SNDBUF is %zu.", (size_t) so_sndbuf);
pa_sink_set_max_request(u->sink, PA_MAX((size_t) so_sndbuf, u->block_size));
}
pa_log_debug("Connection authenticated, handing fd to IO thread...");
pa_asyncmsgq_post(u->thread_mq.inq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_PASS_SOCKET, NULL, 0, NULL, NULL);
u->state = STATE_RUNNING;
}
return 0;
}
int pa__init(pa_module*m) {
pa_iochannel *io;
pa_modargs *ma;
pa_bool_t exit_on_eof = FALSE;
pa_assert(m);
if (m->core->running_as_daemon) {
pa_log_info("Running as daemon, refusing to load this module.");
return 0;
}
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("failed to parse module arguments.");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "exit_on_eof", &exit_on_eof) < 0) {
pa_log("exit_on_eof= expects boolean argument.");
goto fail;
}
if (pa_stdio_acquire() < 0) {
pa_log("STDIN/STDUSE already in use.");
goto fail;
}
io = pa_iochannel_new(m->core->mainloop, STDIN_FILENO, STDOUT_FILENO);
pa_iochannel_set_noclose(io, 1);
m->userdata = pa_cli_new(m->core, io, m);
pa_cli_set_eof_callback(m->userdata, exit_on_eof ? eof_and_exit_cb : eof_and_unload_cb, m);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
return -1;
}
int pa__init(pa_module*m) {
pa_iochannel *io;
pa_modargs *ma;
bool exit_on_eof = false;
#ifndef OS_IS_WIN32
int fd;
#endif
pa_assert(m);
if (m->core->running_as_daemon) {
pa_log_info("Running as daemon, refusing to load this module.");
return 0;
}
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("failed to parse module arguments.");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "exit_on_eof", &exit_on_eof) < 0) {
pa_log("exit_on_eof= expects boolean argument.");
goto fail;
}
if (pa_stdio_acquire() < 0) {
pa_log("STDIN/STDOUT already in use.");
goto fail;
}
/* We try to open the controlling tty anew here. This has the
* benefit of giving us a new fd that doesn't share the O_NDELAY
* flag with fds 0, 1, or 2. Since pa_iochannel_xxx needs O_NDELAY
* on its fd using those fds directly could set O_NDELAY which
* fprintf() doesn't really like, resulting in truncated output
* of log messages, particularly because if stdout and stderr are
* dup'ed they share the same O_NDELAY, too. */
#ifndef OS_IS_WIN32
if ((fd = pa_open_cloexec("/dev/tty", O_RDWR|O_NONBLOCK, 0)) >= 0) {
io = pa_iochannel_new(m->core->mainloop, fd, fd);
pa_log_debug("Managed to open /dev/tty.");
}
else
#endif
{
io = pa_iochannel_new(m->core->mainloop, STDIN_FILENO, STDOUT_FILENO);
pa_iochannel_set_noclose(io, true);
pa_log_debug("Failed to open /dev/tty, using stdin/stdout fds instead.");
}
m->userdata = pa_cli_new(m->core, io, m);
pa_cli_set_eof_callback(m->userdata, exit_on_eof ? eof_and_exit_cb : eof_and_unload_cb, m);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
return -1;
}
