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Date:      Tue, 9 Aug 2011 00:07:52 -0700
From:      Peter Wemm <peter@wemm.org>
To:        "Simon L. B. Nielsen" <simon@nitro.dk>
Cc:        svn-src-head@freebsd.org, re@freebsd.org, svn-src-all@freebsd.org, Doug Barton <dougb@freebsd.org>, src-committers@freebsd.org
Subject:   Re: svn commit: r224674 - head/etc
Message-ID:  <CAGE5yCoU7HM7bR-7u9z1=LcTSo=q4Ls1abpY+GVMXob+ZWvwfA@mail.gmail.com>
In-Reply-To: <9DDF0DAB-9056-45CD-8CE9-81B621A35B13@nitro.dk>
References:  <201108060916.p769Gr4A043462@svn.freebsd.org> <9DDF0DAB-9056-45CD-8CE9-81B621A35B13@nitro.dk>

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On Sun, Aug 7, 2011 at 1:51 PM, Simon L. B. Nielsen <simon@nitro.dk> wrote:
>
> On 6 Aug 2011, at 11:16, Doug Barton wrote:
>
>> Author: dougb
>> Date: Sat Aug =A06 09:16:53 2011
>> New Revision: 224674
>> URL: http://svn.freebsd.org/changeset/base/224674
>>
>> Log:
>> =A0Rather than edit the nsswitch.conf file based on ${MK_NIS} =3D=3D "no=
"
>> =A0comment out the NIS _compat options by default, but leave them in
>> =A0the file for the convenience of users who want to enable it.
>>
>> =A0Update the comment in the file accordingly.
>
> This disables NIS by default which is rather surprising considering there=
 has been no prior (which I have been able to find) discussion of this.
>
> At the _VERY_ least people need to be warned about this loudly. Unless yo=
u can show this really helps non-NIS users this is IMO a bad idea.

As much as I'd like to see NIS die a painful death, the answer to the
question of helping non-NIS users is "not much" as things stand.

The nis, files and dns components are statically compiled into libc.
There is no expensive dlopen("/usr/lib/nss_nis.so") to optimize out,
unlike some other systems.

The runtime overheads are negligible.  The compiled-in routines check
if nis activated with one syscall and immediately return NS_UNAVAIL if
nis is not configured.

As much as I hate NIS, I suspect this will break every single user of
NIS who happens to also use mergemaster -U.

--=20
Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com; KI6FJV
"All of this is for nothing if we don't go to the stars" - JMS/B5
"If Java had true garbage collection, most programs would delete
themselves upon execution." -- Robert Sewell



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