static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb)
{
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
const char *value;
value = qemu_opt_get(opts, "cancel-path");
tb->cancel_path = g_strdup(value);
value = qemu_opt_get(opts, "path");
if (!value) {
value = TPM_PASSTHROUGH_DEFAULT_DEVICE;
}
tpm_pt->tpm_dev = g_strdup(value);
tb->path = g_strdup(tpm_pt->tpm_dev);
tpm_pt->tpm_fd = qemu_open(tpm_pt->tpm_dev, O_RDWR);
if (tpm_pt->tpm_fd < 0) {
error_report("Cannot access TPM device using '%s': %s",
tpm_pt->tpm_dev, strerror(errno));
goto err_free_parameters;
}
if (tpm_util_test_tpmdev(tpm_pt->tpm_fd, &tpm_pt->tpm_version)) {
error_report("'%s' is not a TPM device.",
tpm_pt->tpm_dev);
goto err_close_tpmdev;
}
return 0;
err_close_tpmdev:
qemu_close(tpm_pt->tpm_fd);
tpm_pt->tpm_fd = -1;
err_free_parameters:
g_free(tb->path);
tb->path = NULL;
g_free(tpm_pt->tpm_dev);
tpm_pt->tpm_dev = NULL;
return 1;
}
static int tpm_emulator_handle_device_opts(TPMEmulator *tpm_emu, QemuOpts *opts)
{
const char *value;
value = qemu_opt_get(opts, "chardev");
if (value) {
Error *err = NULL;
Chardev *dev = qemu_chr_find(value);
if (!dev) {
error_report("tpm-emulator: tpm chardev '%s' not found.", value);
goto err;
}
if (!qemu_chr_fe_init(&tpm_emu->ctrl_chr, dev, &err)) {
error_prepend(&err, "tpm-emulator: No valid chardev found at '%s':",
value);
error_report_err(err);
goto err;
}
tpm_emu->options->chardev = g_strdup(value);
}
if (tpm_emulator_prepare_data_fd(tpm_emu) < 0) {
goto err;
}
/* FIXME: tpm_util_test_tpmdev() accepts only on socket fd, as it also used
* by passthrough driver, which not yet using GIOChannel.
*/
if (tpm_util_test_tpmdev(QIO_CHANNEL_SOCKET(tpm_emu->data_ioc)->fd,
&tpm_emu->tpm_version)) {
error_report("'%s' is not emulating TPM device. Error: %s",
tpm_emu->options->chardev, strerror(errno));
goto err;
}
switch (tpm_emu->tpm_version) {
case TPM_VERSION_1_2:
trace_tpm_emulator_handle_device_opts_tpm12();
break;
case TPM_VERSION_2_0:
trace_tpm_emulator_handle_device_opts_tpm2();
break;
default:
trace_tpm_emulator_handle_device_opts_unspec();
}
if (tpm_emulator_probe_caps(tpm_emu) ||
tpm_emulator_check_caps(tpm_emu)) {
goto err;
}
return tpm_emulator_block_migration(tpm_emu);
err:
trace_tpm_emulator_handle_device_opts_startup_error();
return -1;
}
