Date: Tue, 15 May 2001 10:26:20 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Peter Wemm <peter@wemm.org> Cc: Brian Somers <brian@Awfulhak.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/fs/devfs devfs_vnops.c Message-ID: <30192.989915180@critter> In-Reply-To: Your message of "Mon, 14 May 2001 17:21:06 PDT." <20010515002106.EC0F8380E@overcee.netplex.com.au>
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In message <20010515002106.EC0F8380E@overcee.netplex.com.au>, Peter Wemm writes
:
>Brian Somers wrote:
>> > 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 ?
>>
>> If so - WOW ! And in no less than -8 lines too !
>
>This is how cloning is supposed to work. ie: open /dev/ptymx and it was
>as if you had opened /dev/ptyS6, and devname() returns /dev/ptyS6.
Right :-)
--
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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