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tpm-backend: Add new API to read backend TpmInfo

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TPM configuration options are backend implementation details and shall not be
part of base TPMBackend object, and these shall not be accessed directly outside
of the class, hence added a new interface method, get_tpm_options() to
TPMDriverOps., which shall be implemented by the derived classes to return
configured tpm options.

A new tpm backend api - tpm_backend_query_tpm() which uses _get_tpm_options() to
prepare TpmInfo.

Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Amarnath Valluri 2017-09-29 14:10:17 +03:00 • committed by Stefan Berger
parent 93330cf542
commit f59864ba3a
4 changed files with 60 additions and 55 deletions
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15
backends/tpm.c
View file

@ -142,6 +142,19 @@ TPMVersion tpm_backend_get_tpm_version(TPMBackend *s)
return k->ops->get_tpm_version(s);
}
TPMInfo *tpm_backend_query_tpm(TPMBackend *s)
{
TPMInfo *info = g_new0(TPMInfo, 1);
TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
info->id = g_strdup(s->id);
info->model = s->fe_model;
info->options = k->ops->get_tpm_options ?
k->ops->get_tpm_options(s) : NULL;
return info;
}
static bool tpm_backend_prop_get_opened(Object *obj, Error **errp)
{
TPMBackend *s = TPM_BACKEND(obj);
@ -196,8 +209,6 @@ static void tpm_backend_instance_finalize(Object *obj)
TPMBackend *s = TPM_BACKEND(obj);
g_free(s->id);
g_free(s->path);
g_free(s->cancel_path);
tpm_backend_thread_end(s);
}