static int
HgfsBdChannelSend(HgfsTransportChannel *channel, // IN: Channel
HgfsReq *req) // IN: request to send
{
char const *replyPacket = NULL;
size_t payloadSize;
int ret;
ASSERT(req);
ASSERT(req->state == HGFS_REQ_STATE_UNSENT);
ASSERT(req->payloadSize <= req->bufferSize);
LOG(8, ("VMware hgfs: %s: backdoor sending.\n", __func__));
payloadSize = req->payloadSize;
ret = HgfsBd_Dispatch(channel->priv, HGFS_REQ_PAYLOAD(req), &payloadSize,
&replyPacket);
if (ret == 0) {
LOG(8, ("VMware hgfs: %s: Backdoor reply received.\n", __func__));
/* Request sent successfully. Copy the reply and wake the client. */
ASSERT(replyPacket);
ASSERT(payloadSize <= req->bufferSize);
memcpy(HGFS_REQ_PAYLOAD(req), replyPacket, payloadSize);
req->payloadSize = payloadSize;
HgfsCompleteReq(req);
}
return ret;
}
void
HgfsVmciChannelCompleteRequest(uint64 id) // IN: Request ID
{
HgfsVmciTransportStatus *transportStatus;
HgfsReq *req;
spin_lock_bh(&vmciRequestProcessLock);
/* Reference is taken here */
req = HgfsTransportGetPendingRequest(id);
if (!req) {
LOG(0, (KERN_WARNING "No request with id %"FMT64"u \n", id));
goto exit;
}
transportStatus = (HgfsVmciTransportStatus *)req->buffer;
if (transportStatus->status != HGFS_TS_IO_COMPLETE) {
LOG(0, (KERN_WARNING "Request not completed with id %"FMT64"u \n", id));
goto exit;
}
/* Request is completed (yay!), let's remove it from the list */
HgfsTransportRemovePendingRequest(req);
req->payloadSize = transportStatus->size;
HgfsCompleteReq(req);
exit:
if (req) {
/* Drop the reference taken in *GetPendingRequest */
HgfsRequestPutRef(req);
}
spin_unlock_bh(&vmciRequestProcessLock);
}
void HgfsFailReq(HgfsReq *req, // IN: erequest to be marked failed
int error) // IN: error code
{
HgfsReply *reply = req->payload;
reply->id = req->id;
reply->status = error;
req->payloadSize = sizeof *reply;
HgfsCompleteReq(req);
}
static int
HgfsBdChannelSend(HgfsTransportChannel *channel, // IN: Channel
HgfsReq *req) // IN: request to send
{
char const *replyPacket = NULL;
size_t payloadSize;
int ret;
ASSERT(req);
ASSERT(req->state == HGFS_REQ_STATE_UNSENT);
ASSERT(req->payloadSize <= HGFS_LARGE_PACKET_MAX);
pthread_mutex_lock(&channel->connLock);
if (channel->status != HGFS_CHANNEL_CONNECTED) {
LOG(6, ("Backdoor not opened.\n"));
pthread_mutex_unlock(&channel->connLock);
return -ENOTCONN;
}
payloadSize = req->payloadSize;
LOG(8, ("Backdoor sending.\n"));
ret = HgfsBd_Dispatch(channel->priv, HGFS_REQ_PAYLOAD(req), &payloadSize,
&replyPacket);
if (ret == 0) {
LOG(8, ("Backdoor reply received.\n"));
/* Request sent successfully. Copy the reply and wake the client. */
ASSERT(replyPacket);
HgfsCompleteReq(req, replyPacket, payloadSize);
} else {
/* Map rpc failure to EIO. */
ret = -EIO;
}
pthread_mutex_unlock(&channel->connLock);
return ret;
}