reap zombies #234
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reap zombies #234
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shim is the init, not the command. but we can just have the shim reap zombies!
rather than forcing folks to configure a dumb-init entrypoint, we'll just have the shim handle reaping zombies, since it's already there, and it's pretty handy to not have to ever think about this sidebar: we're getting into "how i learned to stop worrying and love the shim" territory. it's a bit of a pain to have to maintain, but it sure grants a lot of flexibility!
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This modifies the
shimexecutable (which runs as the init process for every thunk) to additionally reap child processes spawned by the thunk that would otherwise become zombies upon exiting.Concretely this prevents accumulation of zombie
dnsmasqprocesses when running Buildkit as a service for the tests. But it should help with any long-running service that needs to spawn processes that daemonize and then exit. Or an irresponsible parent that doesn't look after its children.