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Date: Tue, 14 Apr 2015 10:57:57 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.0.0-3
Message-ID: <20150414085757.GC7343@calimero.vinschen.de>
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On Apr 13 18:10, Houder wrote:
> Hi Corinna,
>=20
> Perhaps not relevant anymore (since you have returned to the drawing boar=
d) ...
>=20
>  - after installing update 3 to Cygwin 2.0 ...
>  - created file while being logged on as user Test; subsequently executed=
: chmod 460 file
>  - switched back to user Henri and attempted to touch file: failed
>  - however, using Cygwin 1.7, and repeating the same procedure, I am able=
 to touch the file (called file2)
>=20
> Regards,
>=20
> Henri
>=20
>  =3D Cygwin 2.0 -- logged on as user Test
>=20
> %% uname -a
> CYGWIN_NT-6.1-WOW Seven 2.0.0(0.287/5/3) 2015-04-12 21:09 i686 Cygwin
> %% pwd
> /home/Test
> %% id
> uid=3D197614(Test) gid=3D197121(None) groups=3D197121(None), ... followed=
 by irrelevant j.
> 545(Users), 4(INTERACTIVE)66049(CONSOLE LOGON),11(Authenticated Users),15=
(This Organization),113(Local
> acount),4095(CurrentSession),
> 66048(LOCAL),262154(NTLM Authentication),401408(Medim Mandatory Level)
> %% touch file
> %% chmod 460 file
> %% echo aha > file
> bash: file: Permission denied
>=20
> %% getfacl file
> # file: file
> # owner: Test
> # group: None
> user::r--
> group::r-x
> mask:rw-

Huh?  So it creates a mask even though it only contains standard POSIX
permissions.  This explains the "permission denied".  The group r-x
combined with a mask rw- results in effective r-- permissions for the
group None.  This yet again calls for adding the output of effective
permissions to getacl.

I think I fixed the thinko in the code.  At one point I noticed that I
mishandled the GROUP_OBJ permssions in new-style ACEs and my fix was
apparently a bit too efficient :}

I uploaded new snapshots to https://cygwin.com/snapshots/ and I'm just
uploading a 2.0.0-0.4 release.

Please give either of them a try.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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