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From: Chris Faylor <cgf AT cygnus DOT com>
Date: Wed, 19 Jul 2000 15:04:50 -0400
To: cygwin-developers AT sources DOT redhat DOT com
Subject: Re: login-1.3 can't work on the recent snapshots.
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In-Reply-To: <3975FB88.5A96123E@cygnus.com>; from vinschen@cygnus.com on Wed, Jul 19, 2000 at 09:03:36PM +0200

On Wed, Jul 19, 2000 at 09:03:36PM +0200, Corinna Vinschen wrote:
>Chris Faylor wrote:
>> 
>> On Thu, Jul 20, 2000 at 01:36:17AM +0900, Kazuhiro Fujieda wrote:
>> >>>> On 05 Jul 2000 23:28:46 +0900
>> >>>> Kazuhiro Fujieda <fujieda AT jaist DOT ac DOT jp> said:
>> >
>> >> The login-1.3 of the net release seem not to work with the
>> >> recent snapshots. I tested it with inetutils-1.3.2-4 under
>> >> WinNT4 Sp6a and the latest snapshot.
>> >>
>> >> When I connected with in.telnetd, I was able to find the
>> >> following message. But I couldn't start the remote session,
>> >> because bash.exe spawned by login.exe was choked by the system
>> >> error of "The application failed to initialize properly (0xc0000022).".
>> >
>> >I managed to find the cause of this problem.
>> >
>> >spawn_guts can modify values referred by `child', even though
>> >there is a case where `child' == `myself'.
>> 
>> Is this when spawn_guts is called to 'exec[lv]p?()' something?
>
>I don't understand then, why my impersonation stuff works at all.
>All typical applications using that technique are using exec(),
>not spawn().
>
>login-1.3 is still using `sexec..()' of course.

I'm not sure why it is a problem even for when child == myself,
actually.

cgf