Function smbios_data

framework_lib/src/fw_uefi/mod.rs:78–112

()

const SMBIOS_V3_EP_SIZE: usize = 24;

pub fn smbios_data() -> Option<(Vec<u8>, Vec<u8>)> {
    use dmidecode::EntryPoint;

    with_config_table(|slice| {
        for i in slice {
            let ep_size = match i.guid {
                ConfigTableEntry::SMBIOS3_GUID => Some(SMBIOS_V3_EP_SIZE),
                ConfigTableEntry::SMBIOS_GUID => Some(SMBIOS_V2_EP_SIZE),
                _ => None,
            };
            if let Some(size) = ep_size {
                unsafe {
                    let ep_ptr = i.address as *const u8;
                    let ep_bytes = slice::from_raw_parts(ep_ptr, size);
                    if let Ok(entry) = EntryPoint::search(ep_bytes) {
                        debug!(
                            "SMBIOS entry point found, version {}.{}",
                            entry.major(),
                            entry.minor()
                        );
                        let table_data = slice::from_raw_parts(
                            entry.smbios_address() as *const u8,
                            entry.smbios_len() as usize,
                        );
                        // Return directly here because there is only ever the old config
                        // table or the new V3 config table. Never both.
                        return Some((ep_bytes.to_vec(), table_data.to_vec()));
                    }
                }
            }
        }

        None
    })
}