As part of the Linode daily backup process, I'd like to have /usr/local/bin/pre_backup and /usr/local/bin/pst_backup added to be searched for and executed if they exist. For example, I might want encfs directories that are decrypted not backed up, but then restarted after the backup, etc.

Thanks.

Lester

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http://www.ingber.com

How do you propose that would work? Your server is running it's own kernel. How do you propose that an outside system (the Xen Dom0 hypervisor) would be able to inject a process into another system's running kernel?

It's one thing for it to be able to read (and back up) your filesystem, but it's another thing entirely for a Xen Dom0 to be able to run arbitrary code in its DomUs. Technical feasibility aside, the security ramifications of a hypervisor being able to do this would be quite troubling.

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