Struct SymbolSectionAccessor

pub struct SymbolSectionAccessor<'a> { /* private fields */ }

A section data accessor intended to symbol tables

For example:

use std::fs::File;
use std::io;
use std::io::{BufReader, Error};

use elfio::Elfio;

fn main() -> io::Result<()> {
    let elf_file = File::open("tests/files/hello_32")?;
    let mut reader = BufReader::new(elf_file);

    let mut elf = Elfio::new();

    elf.load(&mut reader)?;

    let section = match elf.get_section_by_name(&".symtab") {
        Some(s) => s,
        None => return Err(Error::new(io::ErrorKind::Other, "section not found")),
    };

    let symtab = elfio::SymbolSectionAccessor::new(&elf, &*section);
    assert_eq!(symtab.get_symbols_num(), 0x44);
    // Num:    Value  Size Type    Bind   Vis      Ndx Name
    //  30: 08049588     4 OBJECT  LOCAL  DEFAULT   23 dtor_idx.5805
    let sym = symtab.get_symbol(30).unwrap();
    assert_eq!(sym.value, 0x08049588);
    assert_eq!(sym.size, 4);
    assert_eq!(sym.bind, elfio::constant::STB_LOCAL);
    assert_eq!(sym.stype, elfio::constant::STT_OBJECT);
    assert_eq!(sym.shndx, 23);
    assert_eq!(sym.name, "dtor_idx.5805");

    Ok(())
}

Implementations

impl<'a> SymbolSectionAccessor<'a>

pub fn new( elfio: &'a Elfio, section: &'a dyn ElfSectionTrait, ) -> SymbolSectionAccessor<'a>

Creates a new instance of the symbol table accessor

pub fn get_symbols_num(&self) -> ElfXword

Returns number of symbols

pub fn get_symbol(&self, index: ElfXword) -> Option<Symbol>

Get a symbol by its index