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Date: Tue, 25 Jan 2005 08:01:28 -0700 (MST)
Message-Id: <20050125.080128.35796224.imp@bsdimp.com>
To: phk@phk.freebsd.dk
From: "M. Warner Losh" <imp@bsdimp.com>
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cc: rwatson@freebsd.org
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cc: pete@altadena.net
Subject: Re: Devd event from GEOM? 
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In message: <85367.1106664286@critter.freebsd.dk>
            "Poul-Henning Kamp" <phk@phk.freebsd.dk> writes:
: In message <20050125.073258.94555150.imp@bsdimp.com>, "M. Warner Losh" writes:
: 
: >: So suppose I'm listening to a devd socket to try and identify storage
: >: devices arriving that I can automount.  How do I know which device
: >: announcements are for storage devices?
: >
: >Hmmmm, once upon a time I'd have said 'stat the device, and you know'
: >since those would be block devices....
: 
: We do actually have an ioctl, FIODTYPE, which will tell you the
: "kind" of device, but that requires you to open it (O_NDELAY will
: do)

And if opening the device has side effects?

Warner