[pkg-gnupg-maint] Bug#841143: Bug#841143: Suspected race in gpg1 to gpg2 conversion or agent startup

[Ian Jackson]

Ian Jackson writes ("Re: [pkg-gnupg-maint] Bug#841143: Suspected race in gpg1 to gpg2 conversion or agent startup"):
> I haven't tried to narrow the test case.  I'm not 100% sure that
> concurrent execution of different gnupg instances is necessary.
> My replication is with the dgit test suite, which does run dgit but
> only in a self-contained way.

I straced a migration run in the hope that I might spot something
obvious.  I see an awful lot of very complicated activity which seems
to be creating lockfiles with link().  It is quite difficult to make a
reliable locking scheme with link().  I would have recommended flock
or fcntl.

I'm afraid I don't have time now to investigate the gnupg2 source
code.  For now I will arrange for my test suite to cause the migration
to happen once for the whole test suite.

Thanks,
Ian.

-- 
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