Messages in this thread | | | Date | Wed, 4 Dec 2019 08:41:33 +0100 | From | Greg Kroah-Hartman <> | Subject | Re: firmware: dmi-sysfs: why is the access mode of dmi sysfs entries restricted to 0400? |
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On Wed, Dec 04, 2019 at 03:31:22PM +0800, Guoheyi wrote: > Hi, > > Why is the access mode of dmi sysfs entries restricted to 0400? Is it for > security concern? If it is, which information do we consider as privacy?
There's lots of "interesting" information in dmi entries that you probably do not want all processes reading, which is why they are restricted.
> We would like to fetch CPU information from non-root application, is there > feasible way to do that?
What specific CPU information is not currently exported in /proc/cpuinfo that only shows up in DMI entries that you are interested in?
You can always have root change the permissions of a sysfs file if you have a service that wants to allow non-root programs to read specific entries.
thanks,
greg k-h
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