Re: [PATCH v1] perf report: Fix owner error when reading perf.data

[Arnaldo Carvalho de Melo]

Em Thu, Oct 01, 2015 at 09:26:26PM +0900, Taeung Song escreveu:
> > On Oct 1, 2015, at 6:10 PM, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
> > * Taeung Song <treeze.taeung@xxxxxxxxx> wrote:

> >> If perf.data file is owned by some user,
> >> it can't be read even if current user is root.

> > That's intentional: to keep a malicious local user from passing a perf.data to 
> > root who does 'perf report' accidentally or in the wrong directory.

> > root can copy or chown it to himself - or we could add some --really-force flag 
> > for that.

> I got it.
> I didnât know its intention.

Feel free to transform Ingo's comment in a C source code comment right
besides the code doing that check, this way when someone else thinks
this is wrong, like you did, the comment will clarify things.

- Arnaldo
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