Module vdso

Parse the Linux vDSO.

The following code is transliterated from tools/testing/selftests/vDSO/parse_vdso.c in Linux 6.13, which is licensed with Creative Commons Zero License, version 1.0, available at https://creativecommons.org/publicdomain/zero/1.0/legalcode

It also incorporates the patch at: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git/commit/tools/testing/selftests/vDSO?h=next&id=01587d80b04f29747b6fd6d766c3bfa632f14eb0, with changes to fix the pointer arithmetic on s390x.

Safety

Parsing the vDSO involves a lot of raw pointer manipulation. This implementation follows Linux’s reference implementation, and adds several additional safety checks.

Structs

Vdso 🔒

Functions

elf_hash 🔒

Straight from the ELF specification…and then tweaked slightly, in order to avoid a few clang warnings. (And then translated to Rust).

gnu_hash 🔒

init_from_sysinfo_ehdr 🔒

Create a Vdso value by parsing the vDSO at the sysinfo_ehdr address.

Type Aliases

ElfHashEntry 🔒