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Re: Blocking/Non-Blocking Sockets and Daemons

To: tech_(_at_)_openbsd_(_dot_)_org
Subject: Re: Blocking/Non-Blocking Sockets and Daemons
From: Daniel Hartmeier <daniel_(_at_)_benzedrine_(_dot_)_cx>
Date: Wed, 21 Nov 2001 21:29:43 +0100

On Wed, Nov 21, 2001 at 11:17:16AM -0800, Randall Gellens wrote:

>              rslt = fcntl ( newsockfd, F_SETFL, fd_flags - O_NONBLOCK );

That's not the right way to clear a bit, as you seem to assume. Imagine
fd_flags == 8 and O_NONBLOCK == 4. Try this instead:

  fd_flags & ~O_NONBLOCK

Daniel

References:
- Blocking/Non-Blocking Sockets and Daemons
  - From: Randall Gellens

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