/* * Privilege level is a nested permission concept to allow confidential * guests to partition address space, 4-levels are supported.
*/ #define TSM_REPORT_PRIVLEVEL_MAX 3
/** * struct tsm_report_desc - option descriptor for generating tsm report blobs * @privlevel: optional privilege level to associate with @outblob * @inblob_len: sizeof @inblob * @inblob: arbitrary input data * @service_provider: optional name of where to obtain the tsm report blob * @service_guid: optional service-provider service guid to attest * @service_manifest_version: optional service-provider service manifest version requested
*/ struct tsm_report_desc { unsignedint privlevel;
size_t inblob_len;
u8 inblob[TSM_REPORT_INBLOB_MAX]; char *service_provider;
guid_t service_guid; unsignedint service_manifest_version;
};
/** * struct tsm_report - track state of report generation relative to options * @desc: input parameters to @report_new() * @outblob_len: sizeof(@outblob) * @outblob: generated evidence to provider to the attestation agent * @auxblob_len: sizeof(@auxblob) * @auxblob: (optional) auxiliary data to the report (e.g. certificate data) * @manifestblob_len: sizeof(@manifestblob) * @manifestblob: (optional) manifest data associated with the report
*/ struct tsm_report { struct tsm_report_desc desc;
size_t outblob_len;
u8 *outblob;
size_t auxblob_len;
u8 *auxblob;
size_t manifestblob_len;
u8 *manifestblob;
};
/** * enum tsm_attr_index - index used to reference report attributes * @TSM_REPORT_GENERATION: index of the report generation number attribute * @TSM_REPORT_PROVIDER: index of the provider name attribute * @TSM_REPORT_PRIVLEVEL: index of the desired privilege level attribute * @TSM_REPORT_PRIVLEVEL_FLOOR: index of the minimum allowed privileg level attribute * @TSM_REPORT_SERVICE_PROVIDER: index of the service provider identifier attribute * @TSM_REPORT_SERVICE_GUID: index of the service GUID attribute * @TSM_REPORT_SERVICE_MANIFEST_VER: index of the service manifest version attribute
*/ enum tsm_attr_index {
TSM_REPORT_GENERATION,
TSM_REPORT_PROVIDER,
TSM_REPORT_PRIVLEVEL,
TSM_REPORT_PRIVLEVEL_FLOOR,
TSM_REPORT_SERVICE_PROVIDER,
TSM_REPORT_SERVICE_GUID,
TSM_REPORT_SERVICE_MANIFEST_VER,
};
/** * enum tsm_bin_attr_index - index used to reference binary report attributes * @TSM_REPORT_INBLOB: index of the binary report input attribute * @TSM_REPORT_OUTBLOB: index of the binary report output attribute * @TSM_REPORT_AUXBLOB: index of the binary auxiliary data attribute * @TSM_REPORT_MANIFESTBLOB: index of the binary manifest data attribute
*/ enum tsm_bin_attr_index {
TSM_REPORT_INBLOB,
TSM_REPORT_OUTBLOB,
TSM_REPORT_AUXBLOB,
TSM_REPORT_MANIFESTBLOB,
};
/** * struct tsm_report_ops - attributes and operations for tsm_report instances * @name: tsm id reflected in /sys/kernel/config/tsm/report/$report/provider * @privlevel_floor: convey base privlevel for nested scenarios * @report_new: Populate @report with the report blob and auxblob * (optional), return 0 on successful population, or -errno otherwise * @report_attr_visible: show or hide a report attribute entry * @report_bin_attr_visible: show or hide a report binary attribute entry * * Implementation specific ops, only one is expected to be registered at * a time i.e. only one of "sev-guest", "tdx-guest", etc.
*/ struct tsm_report_ops { constchar *name; unsignedint privlevel_floor; int (*report_new)(struct tsm_report *report, void *data); bool (*report_attr_visible)(int n); bool (*report_bin_attr_visible)(int n);
};
int tsm_report_register(conststruct tsm_report_ops *ops, void *priv); int tsm_report_unregister(conststruct tsm_report_ops *ops); #endif/* __TSM_H */
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