static int
fdpass_waitret(struct fdpass *f, int *retfd)
{
int cmd, unused;
if (!fdpass_recv(fdpass_peer, &cmd, &unused, &unused, retfd))
return 0;
if (cmd != FDPASS_RETURN) {
if (log_level >= 1) {
fdpass_log(f);
log_puts(": expected RETURN message\n");
}
fdpass_close(f);
return 0;
}
return 1;
}
void
fdpass_in_helper(void *arg)
{
int cmd, num, mode, fd;
struct fdpass *f = arg;
struct dev *d;
struct port *p;
if (!fdpass_recv(f, &cmd, &num, &mode, &fd))
return;
switch (cmd) {
case FDPASS_OPEN_SND:
d = dev_bynum(num);
if (d == NULL || !(mode & (SIO_PLAY | SIO_REC))) {
if (log_level >= 1) {
fdpass_log(f);
log_puts(": bad audio device or mode\n");
}
fdpass_close(f);
return;
}
fd = sio_sun_getfd(d->path, mode, 1);
break;
case FDPASS_OPEN_MIDI:
p = port_bynum(num);
if (p == NULL || !(mode & (MIO_IN | MIO_OUT))) {
if (log_level >= 1) {
fdpass_log(f);
log_puts(": bad midi port or mode\n");
}
fdpass_close(f);
return;
}
fd = mio_rmidi_getfd(p->path, mode, 1);
break;
default:
fdpass_close(f);
return;
}
fdpass_send(f, FDPASS_RETURN, 0, 0, fd);
}
static int
read_fd(int sock_fd)
{
MyString err;
int bytes;
int flag;
bytes = full_read(0, &flag, sizeof(flag));
if (bytes != sizeof(flag)) {
if (bytes == -1) {
err.sprintf("read error getting flag: %s",
strerror(errno));
}
else {
err.sprintf("short read of flag: %d of %lu bytes",
bytes,
sizeof(flag));
}
full_write(sock_fd, err.Value(), err.Length() + 1);
exit(1);
}
int fd;
if (flag) {
fd = fdpass_recv(sock_fd);
if (fd == -1) {
err.sprintf("fdpass_recv failed\n");
full_write(sock_fd, err.Value(), err.Length() + 1);
exit(1);
}
}
else {
fd = open("/dev/null", O_RDONLY);
if (fd == -1) {
err.sprintf("error opening /dev/null: %s",
strerror(errno));
full_write(sock_fd, err.Value(), err.Length() + 1);
exit(1);
}
}
return fd;
}
