Re: zeroseek and qmail

Charles Cazabon writes:
 > Not really.  And since on most systems, most deliveries will be either
 > forwarding "&" directives or maildir/mbox directives, qmail-local only has to
 > do it when it sees the comparitively rare "|" program delivery directive.

No, it's even easier than that.  It's only if the "|" program delivery
is not the final delivery instruction.  Otherwise, qmail can open a
file for the file deliveries, and open a pipe to qmail-queue for the
forwarding directives, and open a pipe to /bin/sh -c program, and
deliver to them all in parallel.  read, write/write/write.

 > And that's assuming that qmail-local tries to make the fd seekable for the
 > program -- I don't see why djb couldn't simply say "stdin for the program is
 > now a socket" and tell you to do this if you want it seekable:
 > 
 >   | seekablepipe ... yourprogram

It's never been guaranteed not to be a socket, so yes, a helper
program (ala preline) is appropriate.

-- 
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