this post was submitted on 07 Jul 2024
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No Mercy (files.catbox.moe)
submitted 1 month ago by [email protected] to c/[email protected]
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[–] senkora 3 points 1 month ago (1 children)

I haven’t tried this, but if you just need the parent to call waitpid on the child’s pid then you should be able to do that by attaching to the process via gdb, breaking, and then manually invoking waitpid and continuing.

[–] [email protected] 8 points 1 month ago* (last edited 1 month ago)

I think that should do it. I'll try later today and report back.

Of course, this risks getting into an even worse state, because if the parent later tries to correctly wait for its child, the call will hang.

Edit: Will clean up the orphan/defunct process.

If the parent ever tried to wait, they would either get ECHILD if there are no children, or it would block until a child exited.

Will likely cause follow on issues - reaping someone elses children is generally frowned upon :D.