#30931 [Com]: is_writable() and is_readable() return false when access is permitted via ACL

ID: 30931 Comment by: jr at terragate dot net Reported By: bugzilla-php at bwurst dot org Status: No Feedback Bug Type: Filesystem function related Operating System: gentoo linux (kernel 2.6) PHP Version: 5.0.2 New Comment: I've written a patch to address this issue. It uses POSIX's access function to determine file permissions. I tested this patch on Mac OS 10.4.1, Windows XP SP2 and FreeBSD 5.2.1. I am not sure if this patch also works for Win 9x (maybe R_OK, W_OK etc. are not defined there) and other non POSIX conformant OSes. Probably some more #ifndefs are required. http://jr.terragate.net/access.diff Previous Comments: ------------------------------------------------------------------------ [2005-05-12 21:34:01] nickls at apple dot com This also effects OS X Tiger ACLs. Why was this changed from access() on PHP 4.3.X? ------------------------------------------------------------------------ [2005-04-25 17:32:41] kibab at icehouse dot net This is not fixed yet as of Mar. 31 in the 5.0.4 release. ------------------------------------------------------------------------ [2005-03-08 01:00:08] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ [2005-02-28 21:21:59] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2004-11-29 17:26:56] bugzilla-php at bwurst dot org Description: ------------ PHP's is_readable() and is_writable() function report nonsense on ACLs... We have the following test case: A file containing <?php echo __FILE__.' is '.(is_readable(__FILE__) ? '' : 'NOT ')."readable!<br>\n"; echo __FILE__.' is '.(is_writable(__FILE__) ? '' : 'NOT ')."writable!<br>\n"; ?> it's made accessible to the webserver via $ getfacl index.php # file: index.php # owner: someuser # group: webadm user::rw- user:apache:rw- group::r-- mask::rw- other::--- So apache is neither the owner nor in the group but it's accessible through ACL. If I call this file via the webserver, I get /srv/http/[...]/test/index.php is NOT readable! /srv/http/[...]/test/index.php is NOT writable! [...] has been inserted by me, of course. This method works perfectly, the webserver (and also PHP) *can* read and write the file but the is_readable() and is_writable() return wrong values. It really seems like bug #14923, but that one's fixed after php-4.1.0. Also it's CLOSED, so I cannot add a comment there. :-( ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=30931&edit=1