From: Andrey Repin <anrdaemon@yandex.ru>
To: Jim McNamara <nefariousscheme@gmail.com>, cygwin@cygwin.com
Subject: Re: Fwd: Objects in ACL cygwin win 10
Date: Sun, 25 Oct 2020 12:19:40 +0300 [thread overview]
Message-ID: <1689204445.20201025121940@yandex.ru> (raw)
In-Reply-To: <CAEMWCRtTYxhdFdPh9aQqrPU+o-4OoBzc_E6=gVOtYKK-OhkaRQ@mail.gmail.com>
Greetings, Jim McNamara!
Please no top-posting in this list.
>> On 2020-10-23 21:49, Jim McNamara via Cygwin wrote:
>> > On Fri, Oct 23, 2020, 10:06 PM Eliot Moss wrote:
>>
>> >> I have to admit I am not 100% sure what you are asking, but I am careful
>> >> to grant SYSTEM access so
>> >> that my backup program can access and save a copy of virtually
>> everything
>>
>> > Thanks for you and Brian helping me.
>> > I used icacls cygwin /q /c /t reset
>>
>> You have to be very careful using icacls and other Windows commands with
>> Cygwin
>> ACLs as
>>
>> "ICACLS preserves the canonical ordering of ACE entries:
>> Explicit denials
>> Explicit grants
>> Inherited denials
>> Inherited grants"
>>
>> and Cygwin's POSIX ACLs may or may not obey this canonical order; Windows
>> File
>> Explorer often does not consider Cygwin ACLs in what it considers canonical
>> order and requires them to be reordered, which breaks the Cygwin
>> permissions.
>>
>> Ah, that "NT AUTHORITY/SYSTEM" SID, normally paired with
>> BUILTIN/Administrators,
>> as users, groups, or both:
>>
>> $ ls -dl /proc/cygdrive/c/Users/; echo; getfacl /proc/cygdrive/c/Users/;
>> echo;
>> icacls C:/Users/
>> drwxr-xr-x+ 1 SYSTEM SYSTEM 0 Apr 13 2020 /proc/cygdrive/c/Users/
>>
>> # file: /proc/cygdrive/c/Users/
>> # owner: SYSTEM
>> # group: SYSTEM
>> user::rwx
>> group::r-x
>> group:Administrators:rwx #effective:r-x
>> group:Users:r-x
>> mask::r-x
>> other::r-x
>> default:user::rwx
>> default:group::---
>> default:group:Administrators:rwx #effective:r-x
>> default:group:Users:r-x
>> default:mask::r-x
>> default:other::r-x
>>
>> C:/Users/ NT AUTHORITY\SYSTEM:(OI)(CI)(F)
>> BUILTIN\Administrators:(OI)(CI)(F)
>> BUILTIN\Users:(RX)
>> BUILTIN\Users:(OI)(CI)(IO)(GR,GE)
>> Everyone:(RX)
>> Everyone:(OI)(CI)(IO)(GR,GE)
>>
>> Successfully processed 1 files; Failed processing 0 files
>>
> Yes, I see now what you are saying. Didn't know why it behaves like that.
> Do you reccomend:
> A. Noacl option in fstab
> B. Reinstall and leave icacls in windows alone so I can deploy in future
> with runtime
C. Reinstall Cygwin into a new directory (or backup the current one and
reinstall). Use noacl option for directories outside Cygwin tree (i.e.
/cygdrive).
--
With best regards,
Andrey Repin
Sunday, October 25, 2020 12:07:33
Sorry for my terrible english...
prev parent reply other threads:[~2020-10-25 9:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-23 20:02 Jim McNamara
2020-10-23 21:30 ` Brian Inglis
2020-10-23 22:41 ` Jim McNamara
2020-10-23 23:12 ` Jim McNamara
[not found] ` <9c03f3ea-8989-5f93-41c4-4d832eaef94c@cs.umass.edu>
[not found] ` <CAEMWCRvrVGvfX_3yP7XF6SmNtFXd9UwQVahq1bRL1tazBbCibg@mail.gmail.com>
2020-10-24 3:49 ` Fwd: " Jim McNamara
2020-10-24 4:43 ` Brian Inglis
2020-10-24 4:44 ` Brian Inglis
2020-10-24 7:02 ` Jim McNamara
2020-10-24 7:09 ` Jim McNamara
2020-10-24 7:35 ` Brian Inglis
2020-10-25 9:19 ` Andrey Repin [this message]
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