V1.7 and endless loops triggerd by junction points
Matthias Meyer
matthias.meyer@gmx.li
Thu May 6 17:06:00 GMT 2010
Corinna Vinschen wrote:
> On May 6 10:41, Corinna Vinschen wrote:
>> On May 5 21:15, Matthias Meyer wrote:
>> > Corinna Vinschen wrote:
>> > > Otherwise, the only difference as far as I can see is the fact that
>> > > the user token attrib inherited from the Cygwin shell has more user
>> > > rights
>> > > enabled. Namely the backup and restore rights, which allows to
>> > > access
>> > > files and directories which are not available by default. However,
>> > > this only works in an elevated shell, too.
>> > >
>> > > However, it's not Cygwin's fault that attrib is not up to speed with
>> > > circular symlinks on an OS which allows them.
>> > >
>> > It seems to be the backup and restore rights. I can run a cmd as
>> > administrator and attrib don't run into the endless loop.
>> > Also I can run sh from a normal user and attrib will work right.
>> > Only if I run attrib within a process with the backup and restore
>> > rights attrib will run into this endless loop :-(
>>
>> There's a workaround for you, the cygdrop tool, part of the cygutils
>> package.
>>
>> Here's an example:
>>
>> elevated bash$ cd /cygdrive/c/Users/All\ Users
>>
>> elevated bash$ attrib Desktop
>> HR C:\ProgramData\Desktop
>>
>> elevated bash$ attrib Desktop\\Cygwin.lnk
>> A C:\ProgramData\Desktop\Cygwin.lnk
>>
>> elevated bash$ cygdrop -p SeBackupPrivilege
>> /cygdrive/c/Windows/System32/attrib -p Desktop\\Cygwin.lnk File not
>> found - Desktop\Cygwin.lnk
>>
>> Unfortunately you have to use the full path to attrib to make it work
>> since cygdrop doesn't perform a path search.
>
> Sorry about that. It appears I just stumbled over a Cygwin bug in terms
> of casesensitivity when using the execp family of functions. Just
> calling `cygdrop -p SeBackupPrivilege attrib' without full path should
> be fine, but it only works on systems which are not configured for
> casesensitivity. I'll fix that in CVS.
>
>
> Corinna
>
Thank you very much. I will try it after solving my feature number one
(cursor/backspace) ;-)
br
Matthias
--
Don't Panic
--
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
More information about the Cygwin
mailing list