> Date: Thu, 20 Sep 2001 16:03:27 -0600
> From: Richard Gooch <rgooch@xxxxxxxxxxxxxxx>
>
> Pascal Bourguignon writes:
> > > From: Robert Siemer <Robert.Siemer@xxxxxx>
> > > [...]
> > > But how do you protect tape users from other users accessing their
> > > tape during backup (... or just before)?
> >
> > What about using flock on the tape devices? Wouldn't this work?
>
> Not needed to protect against other openers (only one open at a time
> is allowed). And flocks are lost when you close the file descriptor.
> Also, flocks are advisory only (in general).
>
> > On the other hand, if the tapes belong to their users, then the device
> > should be assigned to the proper owner as soon as a tape is
> > (physically) mounted on it. I don't know any mechanism in unix to do
> > that other than "chown $USER $TAPEDEVICE" before mounting the tape.
> >
> > The question is: How do you assign a tape device to a user?
>
> chown(2).
Thank you :-) I suggested chown(1) just one line above. My question
was to Robert, on the policy plan. Depending on the policy adopted to
assign tape devices to the users, one could develop some scripts with
a strategically placed "chown $USER $TAPEDEVICE", to automate the
process.
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