Dermis

Dermis is a libc wrapper that can be dynamically loaded into a binary to change its behavior using lua. For example, it is possible to avoid sleep calls:

DERMIS="example.lua" LD_PRELOAD="/full/path/to/dermis.so" ./examples/sleep

In example.lua:

function sleep(secs)
    print("i should sleep", secs, "seconds... nah")
    return secs
end
dermis_register_sleep(sleep)

Links

• Github