Struct Symbol 

pub struct Symbol {
    pub name: CString,
    pub func_address: *const fn(),
    pub protection: c_int,
}

A symbol found in the PLT section.

Use ObjectFile::symbols to get them.

Using function addresses

The function address in Symbol can be used to invoke functions.

You have to cast the address to the correct function type.

use plthook::ObjectFile;

let pid = std::process::id();

let object = ObjectFile::open_main_program().unwrap();
let getpid_fn = object
    .symbols()
    .find(|sym| sym.name.to_str() == Ok("getpid"))
    .unwrap()
    .func_address as *const fn() -> libc::pid_t;

assert_eq!(pid, unsafe { (*getpid_fn)() as u32 });

Fields

name: CString

Name of the symbol.

func_address: *const fn()

Pointer to the address of the symbol.

protection: c_int

Memory protection. A bitwise-OR of PROT_READ, PROT_WRITE and PROT_EXEC.

Currently, on MSWindows this value is always 0.

Trait Implementations

impl Debug for Symbol

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

Formats the value using the given formatter.