On 2024-07-14 13:22:08 +0200, Chris Hofstaedtler wrote:
> On Sat, Jul 13, 2024 at 11:33:01PM -0400, ov2k wrote:
> > wtmpdb respects the system-wide umask when creating
> > /var/lib/wtmpdb/wtmp.db.  This is inappropriate when the system-wide
> > umask is 077 or something similarly restrictive, as wtmp.db can no
> > longer be read by others
> 
> That however might be the intention of a local configuration. IOW
> admins might want to set it up so that login records are not leaked
> to non-root.

I agree. I've checked the status of a multi-user bookworm machine
at my lab, and it has:

-rw-rw---- 1 root utmp 384384 2024-09-19 09:52:09 /var/log/wtmp

So an admin may want the same thing for wtmp.db.

Isn't there an API to read information from this file, with specific
handling of permissions, e.g. so that a user can get his own
information?

-- 
Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

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