dlhook

An rust proc-macro crate makes write LD_PRELOAD hooks easy.

Usage

Just put #[dlhook(origin = "origin_function_name") on your hook function and receive the "real/origin" function pointer on the first argument. Note that you can(and must!) flag the type of the first function as : _(InferType) so you don't need to repeat yourself.

Example

#[dlhook::dlhook(origin = "getuid")]
fn fake_root_uid(_: _) -> u32 {
    0
}

See more examples at examples/