On Wed, Oct 15, 2014 at 05:11:47AM +0400, ds wrote:
Anyway, there is another part, reading the msr and cpuid. For that,
it seems to be really beneficial, to make it available to everyone.
So the process which needs it, can only live with limited
CAP_SYS_RAWIO powers.
CAP_SYS_RAWIO is somewhat
On 15 October 2014 02:11, ds 1000hz.radiow...@gmail.com wrote:
On 15.10.2014 04:54, Colin Watson wrote:
Martin's right - CAP_SYS_MODULE is functionally equivalent to root.
I see.
Anyway, there is another part, reading the msr and cpuid. For that, it seems
to be really beneficial, to make
On 16.10.2014 00:53, Dimitri John Ledkov wrote:
#include cpuid.h
And then use __get_cpuid() for cpuid. I believe it's possible to
retrieve it without being root that way.
As user-space libraries use that to check if they can/cannot execute
certain optimized instructions.
(e.g. checking for
Greetings!
I'm trying to write a widget, which reports intel CPUs power
consumption. For that, the widget needs access to /dev/cpu/.../msr,
as well as ability to load kernel modules cpuid and msr.
I can set CAP_SYS_RAWIO capability to get the access, but the
Hello ds,
ds [2014-10-14 21:44 +0400]:
I'm trying to write a widget, which reports intel CPUs power
consumption. For that, the widget needs access to /dev/cpu/.../msr,
as well as ability to load kernel modules bcpuid/b and bmsr/b.
I can set CAP_SYS_RAWIO capability to get the
On 14.10.2014 22:37, Martin Pitt wrote:
Ah, how does that work? I'm not aware of an ELF/kernel feature which
allows doing that, this sounds interesting?
https://www.insecure.ws/2013/12/17/lesser-known-tool-of-the-day-getcap-setcap-and-file-capabilities/
Note that at least CAP_SYS_MODULE is
On 15.10.2014 04:54, Colin Watson wrote:
Martin's right - CAP_SYS_MODULE is functionally equivalent to root.
I see.
Anyway, there is another part, reading the msr and cpuid. For that, it
seems to be really beneficial, to make it available to everyone. So the
process which needs it, can
