Function get_smbios

framework_lib/src/smbios.rs:230–253

()

#[cfg(target_os = "freebsd")]
pub fn get_smbios() -> Option<SmbiosStore> {
    trace!("get_smbios() FreeBSD entry");
    // Get the SMBIOS entrypoint address from the kernel environment
    let addr_hex = kenv_get("hint.smbios.0.mem").ok()?;
    let addr_hex = addr_hex.trim_start_matches("0x");
    let addr = u64::from_str_radix(addr_hex, 16).unwrap();
    trace!("SMBIOS Entrypoint Addr: {} 0x{:x}", addr_hex, addr);

    let mut dev_mem = std::fs::File::open("/dev/mem").ok()?;
    // Read enough bytes for either V2 (31 bytes) or V3 (24 bytes) entry point
    let mut header_buf = [0u8; 32];
    dev_mem.seek(SeekFrom::Start(addr)).ok()?;
    dev_mem.read_exact(&mut header_buf).ok()?;

    let entry = EntryPoint::search(&header_buf).ok()?;
    let table_addr = entry.smbios_address();
    let table_len = entry.smbios_len() as usize;

    let mut table_data = vec![0u8; table_len];
    dev_mem.seek(SeekFrom::Start(table_addr)).ok()?;
    dev_mem.read_exact(&mut table_data).ok()?;

    SmbiosStore::from_parts(&header_buf, table_data)
}

#[cfg(feature = "uefi")]
pub fn get_smbios() -> Option<SmbiosStore> {