PHP session permission problem

Question

I'm trying to initialize a session but i get this error:

Warning: session_start() [function.session-start]: open(/tmp/sess_7af3ee9ec1350680bedcf63833d160bd, O_RDWR) failed: Permission denied (13)

The session.path is set to /tmp with 777 perms.

I try to edit the session.path to "0;777;/tmp" but the session files are created with the wrong permissions(only write).

I'm using PHP 5.2 on apache2 and ubuntu 9.10. Any ideas?

VolkerK · Accepted Answer · 2010-01-14 11:59:35Z

5

Please verify that the permissions of /tmp really are xx777

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
$s = stat('/tmp');
printf('%o', $s[2]);
file_put_contents('/tmp/phptest1234.txt', 'test');
unlink('/tmp/phptest1234.txt');

edit: next try, umask

<?php
echo ' php-umask: ', sprintf('%o', umask()), "\n";
echo ' exec-umask: ', exec('umask'), "\n";

edited Jan 14, 2010 at 11:59

answered Jan 13, 2010 at 20:28

VolkerK

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4 Comments

Daniel Over a year ago

Your script returns 44777. The session files are written in /tmp but with wrong permissions: php create session files with 100366 permissions. I can write but not read.

Daniel Over a year ago

It returns: php-umask: 22 exec-umask: 0022

VolkerK Over a year ago

That's odd. If you create a file in /tmp on the shell like e.g. ls -la > /tmp/mytestfile.deleteAtAnyTime does it also have the mode set to 100366?

Daniel Over a year ago

No, the permissions are correctly 644 only session files are created with wrong perms. Maybe there is a bug like this: bugs.php.net/bug.php?id=31323

Anthony Forloney · Accepted Answer · 2010-01-13 17:59:46Z

2

It seems like you do not have permissions to write to the tmp directory, you need to give it permissions to save a file.

answered Jan 13, 2010 at 17:59

Anthony Forloney

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2 Comments

Powerlord Over a year ago

+1: Reminds me of last week when a machine I ran across that someone else set up had /tmp as 0770 instead of 1777 or 1666. Come to think of it, that was a Ubuntu Server too.

Marc W Over a year ago

It looks like he's already stated that /tmp's perms are set to 777.

Brad Griffith · Accepted Answer · 2010-03-31 00:36:07Z

2

I had this problem, as well. There was a line in /etc/sysconfig/httpd that was setting the umask improperly, so I commented it out:

#umask 644

All is well now.

answered Mar 31, 2010 at 0:36

Brad Griffith

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Comments

Daniel · Accepted Answer · 2010-01-17 19:53:33Z

1

I resolve the problem, there was a third party library that sets wrong umask to 777, by deleting it the problem was solved. Thanks for answers.

answered Jan 17, 2010 at 19:53

Daniel

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