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Re: [dmidecode] [PATCH] dmidecode: Add an -r option for rfc 4122

From: Jean Delvare
Subject: Re: [dmidecode] [PATCH] dmidecode: Add an -r option for rfc 4122
Date: Fri, 22 May 2015 10:02:27 +0200

Hi Navin,

Please don't top-post.

Le Friday 22 May 2015 à 12:27 +0530, Navin P a écrit :
> Thanks Jean.
>  I used lshal so that it works on uid!=0.

I suppose that hald is reading the information from sysfs or /dev/mem as
root before dropping the root privileges.

> Do you think the above patch is any relevant or you see any downsides of it ?

There have been many people complaining about the inability to read uuid
and serial numbers as non-root users over the years. Their complaints
have always been ignored or turned down so far and I can't see this
changing. UUIDs and serial numbers are considered private information
which should not be readable by everyone by default.

If you want these values to be world readable on your system, feel free
to chmod them at boot time. The permissions defined in the dmi-id driver
are only the default permissions, nothing prevents you from changing
them at run-time (as root, obviously.)

Jean Delvare
SUSE L3 Support

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