[OT] Cant write across filesystem mounts?

Mon Jun 1 17:28:22 UTC 2015

Thank you very much for yours response!

> > When running PHP script through Nginx it writes OK to files
> > on the same disk mount where the PHP file is located but
> > not to the other parts of the system that are on another mount.
> > (well i dont know if its a matter of "same mount" or not, but
> > that is how it is behaving)
> >
> > Example, /tmp is on another mount than the web root.
> >
> > <?php
> > ini_set('display_errors', 'On');
> > file_put_contents('/tmp/test', 'hello world');
> > system('touch /tmp/test-touch');
> > file_put_contents('/webroot/tmp/test', 'hello world');
> > system('touch /webroot/tmp/test-touch');
> > ?><html><body>hello world</body></html>
> >
> > I run this script from CLI (sudo as ANY user including the php
> > user) and it always works fine (writes files in both places). If I
> > access it from a browser the write/touch commands to /tmp
> > fail silently.
> >
> > No AVC from selinux, no PHP or Nginx errors or warnings.
> > /tmp permissions are usual 777. Can someone help me in
> > right direction?
>
>
> In this particular case I would recommend to look into PHP
> configuration, open_basedir directive in particular:
>
> http://php.net/manual/en/ini.core.php#ini.open-basedir

Nothing is set for that. Also note the "restriction" doesnt happen
when running the example script from the CLI. Issue may be
peculiar to the O/S but I no idea how or where to start looking
in this regard.

Other ideas anyone?