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To:	cygwin AT cygwin DOT com
From:	Eliot Moss <moss AT cs DOT umass DOT edu>
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Date:	Tue, 11 Jul 2017 12:33:55 -0400
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On 7/11/2017 8:34 AM, Eliot Moss wrote:
> On 7/10/2017 10:33 PM, Brian Inglis wrote:
>> On 2017-07-10 20:00, Eliot Moss wrote:
>>>> Backup processes should run with SeBackupPrivilege.
>>>
>>> Reasonable.  CrashPlan runs using SYSTEM access.  I
>>> will try adding SYSTEM to the BackupOperators group,
>>> which presumably has SeBackupPrivilege (and
>>> SeRestorePrivilege).  I am not sure how else to approach
>>> granting suitable privilege to this program.
>>
>> Normally (a) backup/restore account(s) with backup/restore GPOs.
>> Failing that, registry tweaks, which should be set up by your backup package
>> installer.
>> Review
>> https://support.crashplan.com/Troubleshooting/Unable_To_Back_Up_Files_Windows
>
> Thank you, Brian - I was aware of that page.  It says that the SYSTEM user
> needs access to the files.  I have normally set up so that my cygwin tree
> is granted SYSTEM read access all the way down.  /usr/share/locale does
> not seem to obey that, which I will inspect more deeply.  Meanwhile, I am
> still seeing if adding SYSTEM to BackupOperators is helpful ...

The answer to the latter question is no, so, I applied these changes to
my /usr hierarchy (32 and 64 bit):

Directories:
   setfacl -m group:SYSTEM:r-x
   setfacl -m default:group:SYSTEM:r-x
   chgrp Cygwin
   chmod g+s

Files:
   setfacl -m group:SYSTEM:r-x
   chgrp Cygwin

The chgrp and chmod are not the more necessary parts, but they tend to
help Cygwin tools run ore smoothly.  (Cygwin is the name of a group I
set up for Cygwin things; of course I am a member of that group.)  The
setfacl SYSTEM settings are what is crucial for CrashPlan.

Meanwhile, I still claim that 600 mode for .mo files is strange :-) ...

Regards - EM

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