Lennart Poettering
f17132260f
This combines safe_fork() with pidref_set_pid(). Eventually we really should switch this to use CLONE_PIDFD, but as that is not wrapped by glibc yet, it's hard. But this is not crucial anyway, as a child we just forked off can always safely be referenced also by PID, given the reaping is under our own control. A simple test case is added in a follow-up commit.
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