Bug #53658 [Fbk->Csd]: is_writable returns always false

Edit report at http://bugs.php.net/bug.php?id=53658&edit=1 ID: 53658 User updated by: pierregobin at free dot fr Reported by: pierregobin at free dot fr Summary: is_writable returns always false -Status: Feedback +Status: Closed Type: Bug Package: Filesystem function related Operating System: Linux 2.6.35 PHP Version: 5.3SVN-2011-01-05 (SVN) Block user comment: N Private report: N New Comment: yes this is related to selinux : disabling selinux makes it work correctly. Previous Comments: ------------------------------------------------------------------------ [2011-01-06 23:27:07] rasmus@php.net Nah, this is pure Unix permissions. You are missing a piece somewhere. PHP doesn't do anything magical here. selinux perhaps. Dunno. strace a request and see which low-level syscall is failing here. ------------------------------------------------------------------------ [2011-01-06 23:21:10] pierregobin at free dot fr Hi - 1) apache is the user as shown by ps aux | grep httpd. apache 1724 0.0 0.8 33996 4248 ? S 18:00 0:00 /usr/sbin/httpd apache 1726 0.0 0.6 32972 3292 ? S 18:00 0:00 /usr/sbin/httpd 2) when I run php on command line using my own account : php -f is_writable.php - result is correct; 3) when I run php on command line sudoed by apache - it works also (echo is_writable). sudo -u apache php -f is_writable.php this echos the right result : is_writable<br> Seems like httpd is disturbing php... ------------------------------------------------------------------------ [2011-01-05 23:44:23] rasmus@php.net Are you absolutely sure your web server is running as user apache? Do a "ps -aux | grep httpd" or "ps aux | grep apache" and see which user it is running as. is_writable works fine everywhere as far as I know. ------------------------------------------------------------------------ [2011-01-05 22:38:05] pierregobin at free dot fr Description: ------------ When php script is run via apache is_writable always returns false : 'is_writable()' always returns 'false' whatever : - the permission write sets or not. - safe_mode on or off - the owner of the file being root:root or apache:apache on the other side, 'is_readable()' returns the correct value (either 'true' when the file is made readable or 'false' when the file is made unreadable). But, when the same script is run by the php command line (under root) - is_writable returns the correct value. Test script: --------------- <?php if (is_writable("toto")) { echo "is_writable<br>"; } else { echo "is not writable!!!<br>"; } ?> Expected result: ---------------- is_writable in case 'toto' is writable is not writable in case 'toto' is not writable ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53658&edit=1