Struct Vdso

pub(super) struct Vdso {
    load_addr: *const Elf_Ehdr,
    load_end: *const c_void,
    pv_offset: usize,
    symtab: *const Elf_Sym,
    symstrings: *const u8,
    gnu_hash: *const u32,
    bucket: *const u32,
    chain: *const u32,
    nbucket: u32,
    versym: *const u16,
    verdef: *const Elf_Verdef,
}

Fields

load_addr: *const Elf_Ehdr

load_end: *const c_void

pv_offset: usize

symtab: *const Elf_Sym

symstrings: *const u8

gnu_hash: *const u32

bucket: *const u32

chain: *const u32

nbucket: u32

versym: *const u16

verdef: *const Elf_Verdef

Implementations

impl Vdso

pub(super) fn new() -> Option<Self>

Parse the vDSO.

Returns None if the vDSO can’t be located or if it doesn’t conform to our expectations.

unsafe fn match_version(&self, ver: u16, name: &CStr, hash: u32) -> bool

Check the version for a symbol.

Safety

The raw pointers inside self must be valid.

unsafe fn check_sym( &self, sym: &Elf_Sym, i: u32, name: &CStr, version: &CStr, ver_hash: u32, ) -> bool

Check to see if the symbol is the one we’re looking for.

Safety

The raw pointers inside self must be valid.

pub(super) fn sym(&self, version: &CStr, name: &CStr) -> *mut c_void

Look up a symbol in the vDSO.

unsafe fn base_plus(&self, offset: usize) -> Option<*const c_void>

Add the given address to the vDSO base address.

unsafe fn addr_from_elf(&self, elf_addr: usize) -> Option<*const c_void>

Translate an ELF-address-space address into a usable virtual address.