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Subject: | Re: cygwin potentially corrupting permissions? |
To: | cygwin AT cygwin DOT com |
References: | <CAGpXXZKUQtAbrQ80VDHZhy0aZtzG+5fDB7bcYz-kwQ3Kgx6ueQ AT mail DOT gmail DOT com> <560366EE DOT 5020207 AT tlinx DOT org> <CAGpXXZJeWs33BJi7qROduZEhTx1pXXXseTbfXu+QP8+cf_r5hQ AT mail DOT gmail DOT com> <56043BA4 DOT 7040405 AT tlinx DOT org> <CAGpXXZLrourgJ39=n4M8kEKeF7tT3fCTafvLaSfZuHh62ffmUA AT mail DOT gmail DOT com> |
From: | Ken Brown <kbrown AT cornell DOT edu> |
Message-ID: | <56044D87.1070409@cornell.edu> |
Date: | Thu, 24 Sep 2015 15:22:47 -0400 |
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On 9/24/2015 2:52 PM, Greg Freemyer wrote: > On Thu, Sep 24, 2015 at 2:06 PM, Linda Walsh <cygwin AT tlinx DOT org> wrote: >> Greg Freemyer wrote: >>> >>> Linda, >> >> >>> I saved your script as "lsacl.txt". Then I used "cp lsacl.txt it" to >>> make a copy. >>> >>> The copy is permission denied for reading. Basic ls -l shows no >>> difference (as expected) >>> >>> $ ls -l lsacl.sh it >>> ----rwx---+ 1 gaf None 1630 Sep 24 12:05 it >>> ----rwx---+ 1 gaf None 1630 Sep 24 12:00 lsacl.sh >>> >>> But your script does show a difference: >>> >>> $ ./lsacl.sh lsacl.sh it >>> [u::---,g::---,g:root:rwx,g:Authenticated >>> Users:rwx,g:SYSTEM:rwx,g:Users:r-x,m:rwx,o:---/] lsacl.sh >>> [u::---,g::r-x,g:root:rwx,g:Authenticated >>> Users:rwx,g:SYSTEM:rwx,g:Users:r-x,m:rwx,o:---/] it >> >> --- >> Well user 'gaf' (that's you, from the file perms has no access). >> >> So up front, you are denied before anything happens. > > Totally logical, but not accurate. ) > > I am the owner of both "it" and "lsacl.sh." > > For both the user permissions are "---" (why I don't know. I created > lsacl.sh by a simple drag and drop out of firefox.) > > I can cat out "lsacl.sh", but not "it". > > I know "chmod +rw it" gives me access to the file. The problem is > Windows is creating files with permissions like lsacl.sh routinely on > my system. > > Then when I do anything to them in cygwin, the permissions are > modified to block my access. > > I first noticed this because I was exporting CSV files from excel, > then editing them with vi from cygwin. > > On the first edit, all was good. After that, I no longer had > permission to access the file. > > So, either: > > - Windows 7 (on 2 different machines) has started using default > permissions that are bad on their face > > - cygwin is not properly maintaining the permissions when it manipulates a file > > Either way, I would really like a solution that doesn't involve a > manual chmod for every file I create via the normal Windows interface > and which I want to work with it in cygwin. The problem could be caused by the default ACL on whatever directory you're working in. You might consider running 'setfacl -b' and/or 'setfacl -k' on that directory. (Run 'setfacl --help' for more information.) Ken -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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