static void virtconsole_realize(DeviceState *dev, Error **errp)
{
VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(dev);
VirtConsole *vcon = VIRTIO_CONSOLE(dev);
VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_GET_CLASS(dev);
if (port->id == 0 && !k->is_console) {
error_setg(errp, "Port number 0 on virtio-serial devices reserved "
"for virtconsole devices for backward compatibility.");
return;
}
if (qemu_chr_fe_backend_connected(&vcon->chr)) {
/*
* For consoles we don't block guest data transfer just
* because nothing is connected - we'll just let it go
* whetherever the chardev wants - /dev/null probably.
*
* For serial ports we need 100% reliable data transfer
* so we use the opened/closed signals from chardev to
* trigger open/close of the device
*/
if (k->is_console) {
qemu_chr_fe_set_handlers(&vcon->chr, chr_can_read, chr_read,
NULL, chr_be_change,
vcon, NULL, true);
virtio_serial_open(port);
} else {
qemu_chr_fe_set_handlers(&vcon->chr, chr_can_read, chr_read,
chr_event, chr_be_change,
vcon, NULL, false);
}
}
}
static int vmc_initfn(VirtIOSerialDevice *dev)
{
VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
SpiceVirtualChannel *svc = DO_UPCAST(SpiceVirtualChannel, port, port);
const char** psubtype = spice_server_char_device_recognized_subtypes();
const char *subtype = NULL;
if (!using_spice) {
return -1;
}
dprintf(svc, 1, "%s\n", __func__);
if (svc->subtype == NULL) {
svc->subtype = strdup("vdagent");
}
for(;*psubtype != NULL; ++psubtype) {
if (strcmp(svc->subtype, *psubtype) == 0) {
subtype = *psubtype;
break;
}
}
if (subtype == NULL) {
fprintf(stderr, "spice-vmc: unsupported subtype\n");
vmc_print_optional_subtypes();
return -1;
}
port->name = qemu_strdup(VMC_GUEST_DEVICE_NAME);
svc->vmstate = qemu_add_vm_change_state_handler
(vmc_change_state_handler, svc);
svc->sin.subtype = svc->subtype;
virtio_serial_open(port);
return 0;
}
static void chr_event(void *opaque, int event)
{
VirtConsole *vcon = opaque;
switch (event) {
case CHR_EVENT_OPENED:
virtio_serial_open(&vcon->port);
break;
case CHR_EVENT_CLOSED:
virtio_serial_close(&vcon->port);
break;
}
}
static void chr_event(void *opaque, int event)
{
VirtConsole *vcon = opaque;
trace_virtio_console_chr_event(vcon->port.id, event);
switch (event) {
case CHR_EVENT_OPENED:
virtio_serial_open(&vcon->port);
break;
case CHR_EVENT_CLOSED:
if (vcon->watch) {
g_source_remove(vcon->watch);
vcon->watch = 0;
}
virtio_serial_close(&vcon->port);
break;
}
}
static void chr_event(void *opaque, int event)
{
VirtConsole *vcon = opaque;
VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(vcon);
trace_virtio_console_chr_event(port->id, event);
switch (event) {
case CHR_EVENT_OPENED:
virtio_serial_open(port);
break;
case CHR_EVENT_CLOSED:
if (vcon->watch) {
g_source_remove(vcon->watch);
vcon->watch = 0;
}
virtio_serial_close(port);
break;
}
}
