Date: Tue, 15 May 2001 10:25:30 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Brian Somers <brian@Awfulhak.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/fs/devfs devfs_vnops.c Message-ID: <30165.989915130@critter> In-Reply-To: Your message of "Tue, 15 May 2001 01:07:07 BST." <200105150007.f4F077515172@hak.lan.Awfulhak.org>
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In message <200105150007.f4F077515172@hak.lan.Awfulhak.org>, Brian Somers write
s:
>> phk 2001/05/14 01:20:47 PDT
>>
>> Modified files:
>> sys/fs/devfs devfs_vnops.c
>> Log:
>> After a successfull poll of the cloning functions, match on the
>> returned dev_t rather than the original name.
>>
>> This allows cloning from one name to another which is useful for
>> /dev/tty and later for the pty's.
>>
>> Revision Changes Path
>> 1.23 +7 -15 src/sys/fs/devfs/devfs_vnops.c
>
>Does this mean that I can catch ``open("/dev/tun")'' and clone (say)
>/dev/tun100, returning that ?
yes :-)
We need a generic ioctl which returns the name of the device, so that
we don't have weeds doing that by examining minor numbers popping up
all over the place, but otherwise: have at it :-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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