Edit report at http://bugs.php.net/bug.php?id=54110&edit=1
ID: 54110
Updated by: paj...@php.net
Reported by: carsten_sttgt at gmx dot de
Summary: tsrm_realpath_r and junction point with denied read
access
-Status: Open
+Status: Feedback
Type: Bug
Package: Filesystem function related
Operating System: Windows
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
I'm not sure your diagnostic is correct. Junction or links are supported
and work
well. Is /deny RD not about denying read data/list directory? Then why
should we
do it?
Previous Comments:
------------------------------------------------------------------------
[2011-02-27 12:05:35] carsten_sttgt at gmx dot de
Description:
------------
tsrm_realpath_r is having a problem if working with/inside a junction
point and
"read data/list directory" is denied on this junction point.
That's the implementation for many common directories on Windows7/Vista
in e.g. %USERPROFILE%, %ALLUSERSPROFILE% like "%USERPROFILE%\SendTo".
The problem is a call to CreateFile with GENERIC_READ access in
tsrm_realpath_r. Well, the MSDN is writing:
> If this parameter is zero, the application can query certain metadata
> such as file, directory, or device attributes without accessing that
> file or device, even if GENERIC_READ access would have been denied.
I think "zero" is save at this point and that's what I'm doing in my
patch.
Regards,
Carsten
Test script:
---------------
in the shell:
md test1
mklink /j test test1
icacls test /deny *S-1-1-0:(rd)
php -r "var_dump(realpath('test'));"
php -r "var_dump(fopen('test/test.txt', 'w'));"
Expected result:
----------------
string(31) "C:\Users\Public\Documents\test1"
resource(5) of type (stream)
Actual result:
--------------
bool(false)
Warning: fopen(test/test.txt): failed to open stream: No such file or
directory
in Command line code on line 1
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=54110&edit=1
