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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
Download patch file Download diff file Expand all files Collapse all files

15
include/sysemu/tpm_backend.h
View file

@ -49,10 +49,9 @@ struct TPMBackend {
TPMRecvDataCB *recv_data_callback;
bool had_startup_error;
/* <public> */
char *id;
enum TpmModel fe_model;
char *path;
char *cancel_path;
QLIST_ENTRY(TPMBackend) list;
};
@ -96,6 +95,8 @@ struct TPMDriverOps {
int (*reset_tpm_established_flag)(TPMBackend *t, uint8_t locty);
TPMVersion (*get_tpm_version)(TPMBackend *t);
TpmTypeOptions *(*get_tpm_options)(TPMBackend *t);
};
@ -214,6 +215,16 @@ void tpm_backend_open(TPMBackend *s, Error **errp);
*/
TPMVersion tpm_backend_get_tpm_version(TPMBackend *s);
/**
* tpm_backend_query_tpm:
* @s: the backend
*
* Query backend tpm info
*
* Returns newly allocated TPMInfo
*/
TPMInfo *tpm_backend_query_tpm(TPMBackend *s);
TPMBackend *qemu_find_tpm(const char *id);
const TPMDriverOps *tpm_get_backend_driver(const char *type);