Struct RelocationSectionAccessor

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

A section data accessor intended to relocation 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_64")?;
    let mut reader = BufReader::new(elf_file);

    let mut elf = Elfio::new();

    elf.load(&mut reader)?;

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

    let relocs = elfio::RelocationSectionAccessor::new(&elf, section);

    assert_eq!(relocs.get_entries_num(), 2);

    // 000000600850  000300000007 R_X86_64_JUMP_SLO 0000000000000000 __libc_start_main@GLIBC_2.2.5 + 0
    let rel = relocs.get_entry(1).unwrap();
    assert_eq!(rel.offset, 0x000000600850);
    assert_eq!(rel.symbol, 3);
    assert_eq!(rel.rtype, 7);
    assert_eq!(rel.addend, Some(0));

    Ok(())
}

Implementations

impl<'a> RelocationSectionAccessor<'a>

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

Creates a new instance of the relocation table accessor

pub fn get_entries_num(&self) -> ElfXword

Returns number of symbols

pub fn get_entry(&self, index: ElfXword) -> Option<Relocation>

Get a relocation entry by its index