static uint8_t *spicevmc_red_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
uint16_t type,
uint32_t size)
{
SpiceVmcState *state;
state = SPICE_CONTAINEROF(rcc->channel, SpiceVmcState, channel);
switch (type) {
case SPICE_MSGC_SPICEVMC_DATA:
assert(!state->recv_from_client_buf);
state->recv_from_client_buf = spice_char_device_write_buffer_get(state->chardev_st,
rcc->client,
size);
if (!state->recv_from_client_buf) {
spice_error("failed to allocate write buffer");
return NULL;
}
return state->recv_from_client_buf->buf;
default:
return spice_malloc(size);
}
}
static uint8_t *smartcard_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
uint16_t type,
uint32_t size)
{
SmartCardChannelClient *scc = SPICE_CONTAINEROF(rcc, SmartCardChannelClient, base);
/* todo: only one reader is actually supported. When we fix the code to support
* multiple readers, we will porbably associate different devices to
* differenc channels */
if (!scc->smartcard_state) {
scc->msg_in_write_buf = FALSE;
return spice_malloc(size);
} else {
SmartCardDeviceState *st;
spice_assert(g_smartcard_readers.num == 1);
st = scc->smartcard_state;
spice_assert(st->scc || scc->smartcard_state);
spice_assert(!scc->write_buf);
scc->write_buf = spice_char_device_write_buffer_get(st->chardev_st, rcc->client, size);
if (!scc->write_buf) {
spice_error("failed to allocate write buffer");
return NULL;
}
scc->msg_in_write_buf = TRUE;
return scc->write_buf->buf;
}
}
static void smartcard_char_device_notify_reader_add(SmartCardDeviceState *st)
{
SpiceCharDeviceWriteBuffer *write_buf;
VSCMsgHeader *vheader;
write_buf = spice_char_device_write_buffer_get(st->chardev_st, NULL, sizeof(vheader));
if (!write_buf) {
spice_error("failed to allocate write buffer");
return;
}
st->reader_added = TRUE;
vheader = (VSCMsgHeader *)write_buf->buf;
vheader->type = VSC_ReaderAdd;
vheader->reader_id = st->reader_id;
vheader->length = 0;
smartcard_channel_write_to_reader(write_buf);
}
static void smartcard_char_device_notify_reader_remove(SmartCardDeviceState *st)
{
SpiceCharDeviceWriteBuffer *write_buf;
VSCMsgHeader *vheader;
if (!st->reader_added) {
spice_debug("reader add was never sent to the device");
return;
}
write_buf = spice_char_device_write_buffer_get(st->chardev_st, NULL, sizeof(vheader));
if (!write_buf) {
spice_error("failed to allocate write buffer");
return;
}
st->reader_added = FALSE;
vheader = (VSCMsgHeader *)write_buf->buf;
vheader->type = VSC_ReaderRemove;
vheader->reader_id = st->reader_id;
vheader->length = 0;
smartcard_channel_write_to_reader(write_buf);
}
