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Date:      Tue, 13 Nov 2012 11:31:47 -0800
From:      Julian Elischer <julian@freebsd.org>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        arch@freebsd.org, Baptiste Daroussin <bapt@freebsd.org>
Subject:   Re: Increasing MAXLOGNAME from 17 to 33
Message-ID:  <50A2A023.6060903@freebsd.org>
In-Reply-To: <20121113115034.GJ73505@kib.kiev.ua>
References:  <20121113111806.GE62533@ithaqua.etoilebsd.net> <20121113115034.GJ73505@kib.kiev.ua>

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On 11/13/12 3:50 AM, Konstantin Belousov wrote:
> On Tue, Nov 13, 2012 at 12:18:06PM +0100, Baptiste Daroussin wrote:
>> Hi,
>>
>> I want to increase MAXLOGNAME in sys/param.h from 17 to 33 to allow 32-character
>> long usernames, the PR: misc/161091 and misc/133926 already requested for it.
>>
>> utmpx already allow 32 character long user names.
>>
>> I plan to bump the __FreeBSD_version at the same time because of the ABI
>> breakage.
>>
>> This is simplify life of lots administrator, this value, is a common value for
>> other operating systems.
>>
>> Do anyone have objections about it?
> Yes, I have. Do not break the ABI, it is plain prohibited.
> You might consider increasing the constant only if providing ABI
> compatibility shims.
>
> In fact, the cursory look over the whole base system indicates that ABI
> breakage might be not that big and could be mitigated with relatively
> limited amount of the efforts.
we did this in 1996 at Whistle/IBM and saw no problems.
   it really is needed when you realise that Apple an Microsoft
have much longer names and that we need to worry more about
them than old FreeBSD I think.



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