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From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-developers AT cygwin DOT com>
Subject:	whats a good magic number for fifo's?
Date:	Tue, 27 Mar 2001 21:12:06 +1000
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The title says it all.

I'm extending the magic number checks in fhandler_base... this will have
a performance impact (the assume exe flag and/or ntsec will no longer
shortcut the file open and read tests). I'm open to suggestions for
marking the file as a fifo without magic numbers.

For the moment I will optimise the test by only checking files that are
the right number of bytes long. That should keep things fairly smooth
for most users.

I don't consider the registry a valid option (just imagine the support
requests "we run off a NFS share, we created a fifo, but it's not
recognised .. why not????" ) - but a CYGWIN flag to switch between
registry or magic numbers might work.

Rob

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