Strace Output via rr

Hey everyone,

As part of another project I needed to modify rr to provide strace output during replay. To accomplish this I hacked up strace a bit to get it compiling as a static library, linked it to rr, and modified rr to set the necessary state and call the required functions at the right spots during replay. My solution is a hack and pretty specific to solving my problem but a better implementation should be possible. Is this something in which rr's users would be interested? I likely wouldn't have time to do a general implementation by myself but would be glad to help out with the steps that I've already figured out.

I've published my modified version of strace as well as some docs about what I had to do to make it work here. Once again, this is a very hacky solution that shouldn't be used for anything important. My modified version of rr is here (specifically the strace_output) branch.

Thanks!

Start by reading the linked strace_output_lib documentation and comparing the rr strace_output branch with the main project. The issue does not define acceptance criteria; completion would require agreeing on a general rr implementation for producing strace output during replay.