File Ownership issues...

nvision

Hi,

I have a problem changing file ownership of files uploaded into a directory PHP creates... I need PHP to be able to delete files that have been uploaded.

If anyone has a suggestion I would greatly appreciated it.

What works -
I have been using an upload class to upload files into a directory. This all works great so long as I first create the directory set permissions from my Ensim control panel.

What doesn't -
When I create a directory via PHP mkdir and try to set the ownership whith chown I get errors.

The owner and group ID are set to 48 which I am pretty sure is Apache.

I think I need to set it to 505, but when I chown and chgrp the files from my php script I get

Warning: chown failed: Operation not permitted in /home/virtual/site3/fst/var/www/html/sabre_v2/test.php on line 6

Warning: chgrp failed: Operation not permitted in /home/virtual/site3/fst/var/www/html/sabre_v2/test.php on line 7

here is the code I am using.. where target is teh base address to the file.

chmod($target, 0777);
chown($target, 505);
chgrp($target, 505);

Is there some other step I am missing here?

nvision

Just an update to my question,

It was suggested that this may actually be a setting change to my php ini file.

If anyone can help shed some light on this I would be extremely thankful!

jordy

This can be quite complicated.. in ensim user 48 is www indeed (apache webserver). But the problem with ensim is the quite complex user structure.. the apache webserver is a real user and all your ensim users are virtual users. so if you upload a file as a virtual user (your ensim user) you cannot change it to www because the webserver (a real user) does not know all the virtual users. What you will have to do is manually change to mode to 777 and then try again with the script...

btw.. read this to get the real information on a file on a ensim server:

http://nl.php.net/manual/nl/function.stat.php

nvision

Hmm,

That does explain quite a lot, but I'm still not sure I get it.

Your saying, the file is marked as user 48 (apache) but Apache doesn't recognize the user that the script is running under?

isn't there away of changing this?

BTW, Currently, I have to SSH in to the webserver to delete these files under root. Ensim can not delete or modify these files either - it generates privledge errors too.

This kinda screws up my whole program flow; as I want to be able to create subdirectories of uploaded files.

Isn't there some way of doing this?

jordy

Its a littlebit more complex than that. The server is running redhat and has some system users (wich www (pid 49) is one of them). Every client at the server has its own system user (just one). When you ssh to the server you are directed in a chrooted filesystem with running in the context of the system user.

So when the website is parsed by the webserver it does not recognizes the environment users you have. Same the other way around.. when you are sshed into your environment it does not recognize the www user and he puts its pid in place of the user (49).

So if you upload a file.. then chmod it to 777 you can use it with the webserver.