Small wrapper around `setsid(2)` that does not exist in the
execline-style tooling.
Is probably gonna fail iff our process is a session leader already,
but I haven’t tried that out yet.
Change-Id: I1a820f1c6d65ddc29c30995bfd56a760a9d6b341
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11167
Tested-by: BuildkiteCI
Autosubmit: Profpatsch <mail@profpatsch.de>
Reviewed-by: Profpatsch <mail@profpatsch.de>
16461c4100
