On Mon, 2 Apr 2012, Lennart Poettering wrote:

On Mon, 02.04.12 16:55, Steve Grubb (sgr...@redhat.com) wrote:

What about forensics? Any reboot erases information that might have been needed
to see what happened during a break in.

/tmp is already volatile and cleaned up in regular intervals. The new
clean-up on boot is just one tiny bit of additional clean-up.

there is a big difference however with files in /tmp being around for 30 days, and the files being cleaned on a reboot, which might be necessary to get the system in a reliable enough state to do any forensics.

This also means a big change in user experience as many will be expecting things in /tmp to remain there for a while before being deleted even if the system is restarted or crashes.

        Michael Young
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