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SubjectRe: [RFC] [PATCH 2/2] capabilities: implement 64-bit capabilities
Quoting Andrew Morton (akpm@linux-foundation.org):
> On Tue, 16 Oct 2007 16:41:59 -0500
> "Serge E. Hallyn" <serue@us.ibm.com> wrote:
>
> > To properly test this the libcap code will need to be updated first,
> > which I'm looking at now...
>
> This seems fairly significant. I asusme that this patch won't break
> presently-deployed libcap?

It will break libcap. And I'm not sure of the right way to address it.
So I was hoping to hear some ideas from Andrew Morgan, Chris Wright, and
Kaigai.

We can introduce new capget64() and capset64() calls, and have
capget() return -EINVAL or -EAGAIN if a high bit would be needed to
accurately get the task's capabilities.

Or we can require a new libcap, since capget and capset aren't
required for most day-to-day function anyway.

I guess now that I've written this out, it seems pretty clear
that capget64() and capget64() are the way to go. Any objections?

thanks,
-serge
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