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Reply-To: Brian DOT Inglis AT SystematicSw DOT ab DOT ca
Subject: Re: umask problem: wrong permissions for new files
To: cygwin AT cygwin DOT com
References: <20180420100357 DOT GA21217 AT rus DOT uni-stuttgart DOT de>
From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Message-ID: <6cd38c2e-2271-aaee-3263-babf905325c1@SystematicSw.ab.ca>
Date: Fri, 20 Apr 2018 07:25:39 -0600
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On 2018-04-20 04:03, Ulli Horlacher wrote:
> cygwin umask does not work as expected:
> /tmp: uname -a; umask; rm -f zz; touch zz; ls -l zz
> Linux diaspora 4.4.0-119-generic #143-Ubuntu SMP Mon Apr 2 16:08:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
> 0022
> -rw-r--r-- 1 framstag users 0 Apr 20 12:00 zz
> /tmp: uname -a; umask; rm -f zz; touch zz; ls -l zz
> CYGWIN_NT-6.1 WIN-LS0QDOSDIBL 2.10.0(0.325/5/3) 2018-02-02 15:21 i686 Cygwin
> 0022
> -rw-rw----+ 1 admin None 0 Apr 20 12:00 zz
> Why do not have new files mode -rw-r--r-- on cygwin?

Cygwin supports Windows ACLs as POSIX ACLs, which are also supported by Linux.
Use setfacl to set similar default ACLs (DACLs) on a Linux directory, rerun your
test there, and you should see similar results.

*Never* remove DACLs from any Windows directory which will *ever* be used with
any non-Cygwin Windows program: /undefined behaviour/ will result.
Mostly neither Cygwin nor Windows programs will be able to do anything with
those files until you fix the permissions problems using elevated commands ;^>

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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