Date: Wed, 8 Nov 2000 20:35:14 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: msmith@FreeBSD.ORG (Mike Smith) Cc: bschwand@dvart.com (bruno schwander), freebsd-hackers@FreeBSD.ORG Subject: Re: close call in a device ? Message-ID: <200011082035.NAA25463@usr08.primenet.com> In-Reply-To: <200011080305.eA835rF34155@mass.osd.bsdi.com> from "Mike Smith" at Nov 07, 2000 07:05:53 PM
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> If I understand you correctly, you have multiple processes all of which > are going to try to open /dev/foo, and you want them to behave as though > they have each opened a unique device? > > You can't do this with FreeBSD, or with many other Unixes. Any SVR4 system can support this. So can AIX. > Arguably, this is a defect with the device model. If you are trying to > fake up concurrent access to a device, and the client processes are only > going to read and write (no ioctls) to this device, then you can use a > fifo and a multiplexor process. > > Alternatively, and this would be recommended; fix the client program. Or fix the device model. You can't have multiple VMWARE sessions in FreeBSD today because of this defect in the device model. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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