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Date: Tue, 4 Mar 2008 14:56:01 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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Subject: Re: chown with not existing user/group
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On Mar  4 06:40, Eric Blake wrote:
> | I was thinking cygwin goal was to emulate as much as possible posix
> | spec.
>
> Yes, and cygwin's behavior in this case is still POSIX compliant.

Right.  The error code in question is this:

  [EINVAL]
    The owner or group ID supplied is not a value supported by the
    implementation.

We *could* create non-existant SIDs in the security descriptors of
files, but I don't know what the sense would be.  These SIDs would
never, on no machine, have a real user or group representation.  It's
not quite comparable with using non-existant uids on a Unix box.  These
uids can exist on another machine where they make sense.  That's not how
it is with SIDs since SIDs are bound to a computer or domain.  Fake SIDs
are bound to nothing at all and are never correctly recognized.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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