Mailing List Archive: any experience with chroot-ed apache/mod

Hi list,
did somebody of you set up anapache with mod_backhand in a
chroot-environment?

My apache works fine in the jail as long as I do not activate mod_backhand
in httpd.conf.
But if I uncomment the LoadModule backhand_module ... line, apache cannot
start anymore.
ErrorMessage:
[error] (2)No such file or directory: gethostname failed.

No entries in error_log.
I think apache / mod_backhand.so miss some libaries in my jail. But ldd
doesn't help at this point.
Maybe some more /dev/- nodes have to be created as well.
The unix socket functions have to be available in the jail. But how?
Any experience? Or hints?

I am using SuSE Linux 8.0, apache 1.3.27 and mod_backhand 1.2.2
And again: without mod_backhand my jailed apache works very well (and even
on the same machine a not chrooted apache woks well with mod_backhand).

Thanks,
Tobias

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tobimarq@gmx.de wrote:
> I am using SuSE Linux 8.0, apache 1.3.27 and mod_backhand 1.2.2
> And again: without mod_backhand my jailed apache works very well (and even
> on the same machine a not chrooted apache woks well with mod_backhand).

Linux doesn't have a system call API for retrieving system information.
Instead you have to open files in /proc/. If you chroot, there is an obvious
problem with reading from /proc/.

In linux 2.4.x and up you should be able to do a mount --bind to make /proc
available under the chroot. This is just a guess as I have never tried this
myself. But perhaps, somethine like this will work:

mount --bind /proc /path/to/chroot/proc

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