Date: Sat, 23 Mar 1996 11:53:26 +1100 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, pst@shockwave.com Cc: bde@FreeBSD.ORG, bugs@FreeBSD.ORG, hackers@FreeBSD.ORG, jmz@FreeBSD.ORG Subject: Re: modloaded block/char device drivers Message-ID: <199603230053.LAA32215@godzilla.zeta.org.au>
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>It seems to me, we need something like a top half and a bottom half of >the kdc, the top half stays with the driver (i.e. belongs to qcam or lpt) >and the bottom half stays with the hardware. Then opening either device >would lock out the other device. Using open to lock the device doesn't work so well for network devices. We already have many warty examples: slip, ppp and plip. Bruce
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