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Date: Mon, 13 Sep 1999 23:29:18 +0200 (MET DST)
From: Joerg Schilling <schilling AT fokus DOT gmd DOT de>
Message-Id: <199909132129.XAA25648@fokus.gmd.de>
To: cgf AT cygnus DOT com, corinna AT vinschen DOT de
Cc: cygwin-developers AT sourceware DOT cygnus DOT com, dj AT delorie DOT com
Subject: Re: POSIX and uid_t resp. gid_t

>From cygwin-developers-return-695-schilling=fokus DOT gmd DOT de AT sourceware DOT cygnus DOT com Mon Sep 13 23:24:25 1999
>From: Chris Faylor <cgf AT cygnus DOT com>

>On Mon, Sep 13, 1999 at 11:25:12PM +0200, Corinna Vinschen wrote:
>>DJ Delorie wrote:
>>> 
>>> > How are the datatypes of uid_t and gid_t defined in POSIX?
>>> 
>>> "All of the types listed in Table 2-1 shall be arithmetic types;"

UNIX-98 is not very clear, but at least all data types listed together
with uid_t are integrat types (mandatory).

>>
>>Thanks for the fast reply.
>>
>>This isn't the answer, I hoped to get. The problem is, that in
>>a WinNT environment an arithmetic type isn't enough to get
>>the information of the user and the group of an object.
>>The loose translation via /etc/passwd and /etc/group will
>>never be able, to reflect the ownership of objects.
>>
>>My idea was, to change uid_t and gid_t to the SID datatype.
>>The [fl]stat-calls would return complete ownership info.
>>This would be transparent to applications which never do
>>"id arithmetic" as e.g. ls(1).
>>
>>It's too bad...

>I know that some Unixes have implemented access control lists.
>If you want a model to follow that might be the way to go.
>I know that Digital UNIX implements this, for instance.

Solaris implements ACL's for some years too.

To get information see docs.sun.com

Jörg

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