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bug#10257: 23.3.1 Cygwin: network drives - file is write protected (fals


From: Ken Brown
Subject: bug#10257: 23.3.1 Cygwin: network drives - file is write protected (false positive)
Date: Tue, 13 Dec 2011 11:52:43 -0500
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20111105 Thunderbird/8.0

On 12/13/2011 11:26 AM, jari wrote:
Response from Cygwin list:

     >      $ ls -la /cygdrive/z/tmp/test-epackage.el
     >      -rwxr--r-- 1 ???????? ???????? 437 Dec  9 20:02 
/cygdrive/z/tmp/test-epackage.el

     It's not a bug.

     If you use winbind and the user accounts are correctly mapped to
     Windows accounts, then you would see the Cygwin UIDs/GIDs
     correspoding to the SID of the AD user account.

     If you don't do that, there's only an invisible mapping from the
     Windows SID to the Unix uid/gid.  The actual UNIX account has not
     the same mapping back to the Windows SID.  Instead, the SID
     returned from Samba to Windows is a fake SID S-1-22-1-UnixUID or
     S-1-22-2-UnixGID.  (..)

The rest goes into details for setting 1:1 UID, GID mapping.

You omitted the part of the response that says, "The easiest way to workaround this issue is to mount the share with the noacl mount option". I also suggested this in my first response to your report. Does this fail to work for some reason?

Ken






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