ID: 31323
Comment by: maciejsliwa at op dot pl
Reported By: julien dot mathieu at gmail dot com
Status: No Feedback
Bug Type: Session related
Operating System: Linux
PHP Version: 5.1.2, 4.3.9
New Comment:
I have the same problem with O_RDWR, it happend in 20% of usage. It
strange, because on the same configuration, but only on diffrent
computer it works fine.
Computer on which i have problems
Notebook HP 6153ea dualcore 1,66Ghz
Windows XP Media Center Edition
PHP 5.3.0
server Apache
Server was instaled by EasyPHP 2.0
the second computer which configuration is identical is
AMD Athlon 1Ghz
Windows XP Profesional
PHP 5.3.0
server Apache
and on this its works fine
[Tue Sep 08 19:44:37 2009] [error] [client 127.0.0.1] PHP Warning:
session_start() [<a
href='function.session-start'>function.session-start</a>]:
open(C:\\DOCUME~1\\Maciek\\LOCALS~1\\Temp\\\\sess_jcje64e16gqqtpktra8jndo990,
O_RDWR) failed: Permission denied (13) in C:\\Program
Files\\EasyPHP3_1\\www\\Magazyn\\magazynMain.php on line 3, referer:
http://127.0.0.1/Magazyn/magazyn.php
Previous Comments:
------------------------------------------------------------------------
[2009-03-31 14:47:16] prikid at gmail dot com
We are experiencing similar problem with php 5.2.6 on freebsd and red
hat linux
------------------------------------------------------------------------
[2008-08-12 16:21:03] linus dot norton at assertis dot co dot uk
I have also encountered this twice on redhat running apache 2.2.6 and
php 5.2.6.
Why has this been closed, no feedback was requested then the ticket is
just closed saying no feedback has been given.
------------------------------------------------------------------------
[2006-11-09 14:44:35] mg at iceni dot pl
I can confirm this bug happening on php 4.4.2 build as apache 2 (with
prefork) module. It's extremaly difficult to reproduce, but with little
research it seems to be somehow umask related.
The following is from strace running on a apache process that creates
the files with wrong permissions
open("/tmp/sess_5b2929b94cf141335d0b2d1e5a38fc29", O_RDWR|O_CREAT,
0600) = 186
fstat64(186, {st_mode=S_IFREG|0400, st_size=0, ...}) = 0
So php creates file with 600 permissions but it has only 400 in final.
Note that's happening very rarely, normally file is created with 600.
I didn't have luck tracing how and when umask is changing during
request processing (probably something is changing it prior to the
request, so possibly it's not even php related), but I tried to make the
following very dirty workaround in ext/session/mod_files.c:
------------------------------------------------
@@ -138,6 +138,7 @@
static void ps_files_open(ps_files *data, const char *key TSRMLS_DC)
{
char buf[MAXPATHLEN];
+ mode_t orig_mask;
if (data->fd < 0 || !data->lastkey || strcmp(key,
data->lastkey)) {
if (data->lastkey) {
@@ -156,8 +157,10 @@
data->lastkey = estrdup(key);
+ orig_mask = umask(0);
data->fd = VCWD_OPEN_MODE(buf, O_CREAT | O_RDWR |
O_BINARY, 0600);
-
+ umask(orig_mask);
+
------------------------------------------------
No matter how ugly it is - it seems to do the job and session files
with wrong permissions are no longer created (this workaround is
probably bad idea on threaded severs though).
------------------------------------------------------------------------
[2006-11-05 00:16:32] bclaydon at volved dot com
To provide further details, I am also using Debian (Sarge) with the
latest 4.3.10-16 PHP4 package.
My /var/liv/php4 looks exactly as 'pieter at q-go dot com' mentioned:
drwx-wx-wt 2 root root 4.0K 2006-11-04 18:58 ./
drwxr-xr-x 35 root root 4.0K 2006-09-08 19:11 ../
-rw------- 1 www-data www-data 77 2006-11-04 18:58
sess_7b8da94a2febce75775d9082cd20d58d
-rw------- 1 www-data www-data 116 2006-11-04 19:05
sess_856401c969cc1d4e68b6ffd75457c743
-rw------- 1 www-data www-data 116 2006-11-04 18:58
sess_b5419618a3586b7e3b940a0eaf137fb9
-rw------- 1 www-data www-data 116 2006-11-04 19:09
sess_f7d957b726ff923b4b1f6178f8db489f
I am seeing this issue fairly frequently during usage of CakePHP
framework which has fairly detailed usage of session functions.
I hope this is resolved at some point, especially if it is still open
as of 5.2.0
------------------------------------------------------------------------
[2006-05-22 09:20:29] pieter at q-go dot com
We have similar problems on Debian with PHP 5.1.2 and 5.1.4.
Sessions are all created with correct permissions, but we get the same
permission denied error in 5% of the cases.
drwx-wx-wt 2 root root 4096 May 22 11:03 .
drwxr-xr-x 27 root root 4096 May 18 13:44 ..
-rw------- 1 www-data www-data 0 May 22 11:03
sess_11f06ca5b4701f4be8be30b275e4e51e
-rw------- 1 www-data www-data 1569 May 22 11:00
sess_1856e3c4630f074a1b0490c4792c3e53
-rw------- 1 www-data www-data 0 May 22 10:21
sess_d110fb48e440d1ec4ac610243e897c69
-rw------- 1 www-data www-data 1717 May 22 11:05
sess_f9668179e8a92714f4d9553504bdcd93
Changing the default Debian permissions on /var/lib/php5 from
drwx-wx-wt to drwxrwxrwt seems to help.
I am putting this here because if the two cases are related, the
problem might be more general.
------------------------------------------------------------------------
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