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

Simon 'corecode' Schubert corecode at
Fri Jul 10 01:57:29 PDT 2009

Simon 'corecode' Schubert wrote:
Matthew Dillon wrote:
    dup() doesn't solve the problem.  A dup()'d descriptor still
    points to a common file pointer and thus a common seek position.
    Only open() will generate a new file pointer backing the file
That's not true.
Nevermind, you're right.  I'm too close to sleeping times, and stdio is 
doing some heavy buffering.

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