is_file file_exists filesize problems on cifs mount

[crazyzed]

From my old gentoo server I run the following code with success. "/mnt/images" is a cifs mount!

<?php
$source = '/mnt/images/1001.jpg';
$target = '/tmp/1001.jpg';

if ( file_exists($source) )
echo "file_exists: TRUE<br/>";
else
echo "file_exists: FALSE<br/>";

if ( is_file($source) )
echo "is_file: TRUE<br/>";
else
echo "is_file: FALSE<br/>";

if ( copy($source, $target) )
echo "copy: TRUE<br/>";
else
echo "copy: FALSE<br/>";

echo "filesize source: ".filesize($source)."<br/>";
echo "filesize target: ".filesize($target)."<br/>";
?>

The output is

file_exists: TRUE

is_file: TRUE

copy: TRUE

filesize source: 4715

filesize target: 4715

When I try this on my newly installed CentOS machine I get

file_exists: FALSE

is_file: FALSE

 

Warning: copy(/mnt/images/1001.jpg) [function.copy]: failed to open stream: Permission denied in /var/www/html/filetest.php on line 16

copy: FALSE

 

Warning: filesize() [function.filesize]: stat failed for /mnt/images/1001.jpg in /var/www/html/filetest.php on line 21

filesize source:

 

Warning: filesize() [function.filesize]: stat failed for /tmp/1001.jpg in /var/www/html/filetest.php on line 22

filesize target:

Every function fails. Then I found that when I disable SELinux with "echo 0 > /selinux/enforce" file_exists() and copy() works.

file_exists: TRUE

is_file: FALSE

copy: TRUE

 

Warning: filesize() [function.filesize]: stat failed for /mnt/images/1001.jpg in /var/www/html/filetest.php on line 21

filesize source:

filesize target: 4715

But is_file() and filesize() still doesn't work. They all work when I run them on local files so it is somewhat related to the cifs mount.

What could be the problem here?

[WebStyles]

I'm guessing file permissions...

[requinix]

How do the mount options compare between the two servers?

[crazyzed]

File permissions are the same except for the SELinux addition on CentOS, but as I said I have it disabled right now.

-rwxr-xr-x. 1 root root  4715 Dec  2  2009 1001.jpg

And /etc/fstab is the same on both servers

//192.168.0.2/tmp /mnt/images cifs noauto 0 0

I find it really odd that file_exists() works but is_file() doesn't.

 

But in this case it's really the filesize() function that I need working!

[WebStyles]

I find it really odd that file_exists() works but is_file() doesn't.

 

Yeah, that is strange, if it were the other way around I wouldn't be surprised since the manual for file_exists says

 

This function returns FALSE for files inaccessible due to safe mode restrictions. However these files still can be included if they are located in safe_mode_include_dir.

 

Anyway, I'm still going with permissions until all possibilities are ruled out... Your mount is set to owner & group root, try changing one file to whatever user you apache server is running under. Check httpd.conf because some distributions default to www:www, and others to nobody:default.