static int tpm_passthrough_unix_tx_bufs(int tpm_fd,
const uint8_t *in, uint32_t in_len,
uint8_t *out, uint32_t out_len)
{
int ret;
ret = tpm_passthrough_unix_write(tpm_fd, in, in_len);
if (ret != in_len) {
error_report("tpm_passthrough: error while transmitting data "
"to TPM: %s (%i)\n",
strerror(errno), errno);
goto err_exit;
}
ret = tpm_passthrough_unix_read(tpm_fd, out, out_len);
if (ret < 0) {
error_report("tpm_passthrough: error while reading data from "
"TPM: %s (%i)\n",
strerror(errno), errno);
} else if (ret < sizeof(struct tpm_resp_hdr) ||
tpm_passthrough_get_size_from_buffer(out) != ret) {
ret = -1;
error_report("tpm_passthrough: received invalid response "
"packet from TPM\n");
}
err_exit:
if (ret < 0) {
tpm_write_fatal_error_response(out, out_len);
}
return ret;
}
static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt,
const uint8_t *in, uint32_t in_len,
uint8_t *out, uint32_t out_len,
bool *selftest_done)
{
int ret;
bool is_selftest;
const struct tpm_resp_hdr *hdr;
tpm_pt->tpm_op_canceled = false;
tpm_pt->tpm_executing = true;
*selftest_done = false;
is_selftest = tpm_passthrough_is_selftest(in, in_len);
ret = tpm_passthrough_unix_write(tpm_pt->tpm_fd, in, in_len);
if (ret != in_len) {
if (!tpm_pt->tpm_op_canceled ||
(tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
error_report("tpm_passthrough: error while transmitting data "
"to TPM: %s (%i)",
strerror(errno), errno);
}
goto err_exit;
}
tpm_pt->tpm_executing = false;
ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len);
if (ret < 0) {
if (!tpm_pt->tpm_op_canceled ||
(tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
error_report("tpm_passthrough: error while reading data from "
"TPM: %s (%i)",
strerror(errno), errno);
}
} else if (ret < sizeof(struct tpm_resp_hdr) ||
tpm_passthrough_get_size_from_buffer(out) != ret) {
ret = -1;
error_report("tpm_passthrough: received invalid response "
"packet from TPM");
}
if (is_selftest && (ret >= sizeof(struct tpm_resp_hdr))) {
hdr = (struct tpm_resp_hdr *)out;
*selftest_done = (be32_to_cpu(hdr->errcode) == 0);
}
err_exit:
if (ret < 0) {
tpm_write_fatal_error_response(out, out_len);
}
tpm_pt->tpm_executing = false;
return ret;
}
static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt,
const uint8_t *in, uint32_t in_len,
uint8_t *out, uint32_t out_len)
{
int ret;
tpm_pt->tpm_op_canceled = false;
tpm_pt->tpm_executing = true;
ret = tpm_passthrough_unix_write(tpm_pt->tpm_fd, in, in_len);
if (ret != in_len) {
if (!tpm_pt->tpm_op_canceled ||
(tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
error_report("tpm_passthrough: error while transmitting data "
"to TPM: %s (%i)\n",
strerror(errno), errno);
}
goto err_exit;
}
tpm_pt->tpm_executing = false;
ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len);
if (ret < 0) {
if (!tpm_pt->tpm_op_canceled ||
(tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
error_report("tpm_passthrough: error while reading data from "
"TPM: %s (%i)\n",
strerror(errno), errno);
}
} else if (ret < sizeof(struct tpm_resp_hdr) ||
tpm_passthrough_get_size_from_buffer(out) != ret) {
ret = -1;
error_report("tpm_passthrough: received invalid response "
"packet from TPM\n");
}
err_exit:
if (ret < 0) {
tpm_write_fatal_error_response(out, out_len);
}
tpm_pt->tpm_executing = false;
return ret;
}