Date: Thu, 6 Feb 1997 12:01:07 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: jb@cimlogic.com.au (John Birrell) Cc: hackers@FreeBSD.ORG Subject: Re: fcntl, F_SETFL, O_NONBLOCK & /dev/null Message-ID: <199702060131.MAA28813@genesis.atrad.adelaide.edu.au> In-Reply-To: <199702060050.LAA03861@freebsd1.cimlogic.com.au> from John Birrell at "Feb 6, 97 11:50:16 am"
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John Birrell stands accused of saying: > > I can open /dev/null with O_NONBLOCK. If I open /dev/null without > O_NONBLOCK and then try to fcntl F_SETFL to change the file descriptor > to non-blocking, I get ENODEV returned. Can someone tell me why? Probably because the ioctl handler for /dev/null doesn't understand F_SETFL. I can't find the sucker, so I can't actually give you an authorative answer 8( > John Birrell CIMlogic Pty Ltd -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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