/*
* Invokes a TEE command (secure service, sub-PA or whatever).
*/
TEEC_Result TEEC_InvokeCommand(TEEC_Session *session,
uint32_t cmd_id,
TEEC_Operation *operation,
uint32_t *error_origin)
{
INMSG("session: [%p], cmd_id: [%d]", session, cmd_id);
struct tee_cmd tc;
TEEC_Operation dummy_op;
TEEC_Result result = TEEC_SUCCESS;
uint32_t origin = TEEC_ORIGIN_API;
if (session == NULL) {
origin = TEEC_ORIGIN_API;
result = TEEC_ERROR_BAD_PARAMETERS;
goto error;
}
if (operation == NULL) {
/*
* The code here exist because Global Platform API states that
* it is allowed to give operation as a NULL pointer. In kernel
* and secure world we in most cases don't want this to be NULL,
* hence we use this dummy operation when a client doesn't
* provide any operation.
*/
memset(&dummy_op, 0, sizeof(TEEC_Operation));
operation = &dummy_op;
}
teec_mutex_lock(&mutex);
operation->session = session;
teec_mutex_unlock(&mutex);
memset(&tc, 0, sizeof(struct tee_cmd));
tc.cmd = cmd_id;
tc.op = operation;
if (ioctl(session->fd, TEE_INVOKE_COMMAND_IOC, &tc) != 0)
EMSG("Ioctl(TEE_INVOKE_COMMAND_IOC) failed! (%s)\n",
strerror(errno));
if (operation != NULL) {
teec_mutex_lock(&mutex);
operation->session = NULL;
teec_mutex_unlock(&mutex);
}
origin = tc.origin;
result = tc.err;
error:
if (error_origin != NULL)
*error_origin = origin;
OUTRMSG(result);
}
void TEEC_RequestCancellation(TEEC_Operation *operation)
{
struct tee_cmd tc;
TEEC_Session *session;
if (operation == NULL)
return;
teec_mutex_lock(&mutex);
session = operation->session;
teec_mutex_unlock(&mutex);
if (session == NULL)
return;
memset(&tc, 0, sizeof(struct tee_cmd));
tc.op = operation;
if (ioctl(session->fd, TEE_REQUEST_CANCELLATION_IOC, &tc) != 0)
EMSG("Ioctl(TEE_REQUEST_CANCELLATION_IOC) failed! (%s)\n",
strerror(errno));
}
void TEEC_RequestCancellation(TEEC_Operation *operation)
{
struct tee_cmd_io cmd;
TEEC_Session *session;
if (operation == NULL)
return;
teec_mutex_lock(&mutex);
session = operation->session;
teec_mutex_unlock(&mutex);
if (session == NULL)
return;
teec_resetTeeCmd(&cmd);
cmd.op = operation;
if (ioctl(session->fd, TEE_REQUEST_CANCELLATION_IOC, &cmd) != 0)
EMSG("Ioctl(TEE_REQUEST_CANCELLATION_IOC) failed! (%s)\n",
strerror(errno));
}
