dmi_type
Synopsis
#include <opendmi/types.h>
typedef struct dmi_type {
dmi_type_id_t id;
} dmi_type_t;
#define DMI_TYPE(x) (&dmi_type_ ## x)
#define DMI_TYPE_ANY ((const dmi_type_t *)nullptr)
extern const dmi_type_t dmi_type_firmware;
extern const dmi_type_t dmi_type_system;
...
extern const dmi_type_t dmi_type_end_of_table;Description
A dmi_type_t structure type tells what the information a structure is
decoded into is, which is one C type, e.g. dmi_system_t for
DMI_TYPE(system). Types are told by their objects rather than by their
numbers, and are the constants the library declares in <opendmi/types.h>
for the types of the SMBIOS specification, and the extension modules declare
in their headers for the types of the vendors, e.g. dmi_type_hpe_processor
in <opendmi/module/hpe.h>. DMI_TYPE() names them: DMI_TYPE(system) is
&dmi_type_system.
A type is not a type number, see dmi_type_id:
-
Several specifications may decode the structures of one type, e.g. the layouts of the generations of a vendor, and the structures are of the type whatever layout the table holds.
-
Several types may share a number, e.g. Intel vPro information,
DMI_TYPE(intel_vpro), and Lenovo ThinkVantage Technologies enablement,DMI_TYPE(lenovo_tvt), which are both found at type 131. -
A structure of a type may be found at another number, where a vendor places it, e.g. Intel firmware version information at type 205 on Dell platforms, and is still of its type.
So dmi_entity_info, dmi_entity_data, the lookups of the registry and
the types a handle may refer to take types, and give the structures of the
type asked for only. DMI_TYPE_ANY stands for any type where a type is
optional.
Members
id-
Type number the specification of the type gives the structures, see
dmi_type_id.
Examples
dmi_registry_t *registry = dmi_get_registry(context);
dmi_entity_t *entity = dmi_registry_lookup_first(registry, DMI_TYPE(intel_fvi), true);
if (entity != nullptr)
printf("found at type %d\n", dmi_entity_type_id(entity));