dma(8): Fix race condition in multi-recipient delivery

Thu Jul 16 02:05:39 PDT 2009

Daniel Roethlisberger wrote:
Daniel Roethlisberger <daniel at roe.ch> 2009-07-10:
I guess it is easier to lock the queue file instead of fully
reopening and fixing the unlink() race.
I cleaned up my original hack, maybe this version is a tad more
convincing :)
This doesn't work for me.  All processes are stuck in state lockf.  I 
think we can't reliably combine fcntl locks and flock locks.

cheers
  simon
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