Struct Btf

pub struct Btf { /* private fields */ }

BPF Type Format metadata.

BTF is a kind of debug metadata that allows eBPF programs compiled against one kernel version to be loaded into different kernel versions.

Aya automatically loads BTF metadata if you use Ebpf::load_file. You only need to explicitly use this type if you want to load BTF from a non-standard location or if you are using Ebpf::load.

Implementations

impl Btf

pub fn new() -> Btf

Creates a new empty instance with its header initialized

pub fn add_string(&mut self, name: &str) -> u32

Adds a string to BTF metadata, returning an offset

pub fn add_type(&mut self, btf_type: BtfType) -> u32

Adds a type to BTF metadata, returning a type id

pub fn from_sys_fs() -> Result<Btf, BtfError>

Loads BTF metadata from /sys/kernel/btf/vmlinux.

pub fn parse_file<P>(path: P, endianness: Endianness) -> Result<Btf, BtfError>

where P: AsRef<Path>,

Loads BTF metadata from the given path.

pub fn parse(data: &[u8], endianness: Endianness) -> Result<Btf, BtfError>

Parses BTF from binary data of the given endianness

pub fn id_by_type_name_kind( &self, name: &str, kind: BtfKind, ) -> Result<u32, BtfError>

Returns a type id matching the type name and BtfKind

pub fn to_bytes(&self) -> Vec<u8>

Encodes the metadata as BTF format

Trait Implementations

impl Clone for Btf

fn clone(&self) -> Btf

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Btf

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Btf

fn default() -> Btf

Returns the “default value” for a type.