From: Richard Iswara <haujekchifan@gmail.com>
Subject: Re: The Ravenscar profile and capabilities paradigm
Date: Tue, 12 Oct 2021 04:51:28 -0700 (PDT) [thread overview]
Message-ID: <5671d9c0-2535-43f2-82e5-258eddb7c879n@googlegroups.com> (raw)
In-Reply-To: <jhbamgd4mqktb2dq76jec572t5tjaic1ka@4ax.com>
On Tuesday, October 12, 2021 at 1:42:27 PM UTC+7, Doctor Who wrote:
> On Tue, 12 Oct 2021 12:17:00 +0700, Richard Iswara
> <haujek...@gmail.com> wrote:
>
> >On 12/10/2021 02.50, Doctor Who wrote:
> >> On Mon, 11 Oct 2021 20:36:46 +0100, "Luke A. Guest"
> >> <lag...@archeia.com> wrote:
> >>
> >>> On 11/10/2021 20:25, Doctor Who wrote:
> >>>> On Mon, 11 Oct 2021 15:48:37 +0100, "Luke A. Guest"
> >>>> <lag...@archeia.com> wrote:
> >>>>
> >>>>> On 11/10/2021 14:33, Doctor Who wrote:
> >>>>>> Hello,
> >>>>>> someone knows how to introduce the capabilities paradigm in Ada,
> >>>>>> specifically for programs written using the Ravenscar profile ?
> >>>>>>
> >>>>>>
> >>>>>
> >>>>> Capabilities are just a set of operations that an object / user can
> >>>>> perform, or not. So, it's merely a bitset. A bitset which can form
> >>>>> derived bitsets.
> >>>>>
> >>>>
> >>>> no it is another thing,
> >>>> https://en.wikipedia.org/wiki/Capability-based_security
> >>>>
> >>>
> >>> I know what it is. It is still a set of bits, or, permissions, or
> >>> capabilities. The capabilities are usually provided by the OS services.
> >>>
> >>> But as you didn't specify whether you wanted to map onto an existing OS'
> >>> capabilities or if you wanted to implement your own, I went with the latter.
> >>
> >> there isn't any existing OS that provides capability-security from the
> >> ground up, I intend to implement my own.
> >>
> >seL4? The whitepaper includes the proofs also.
> eh yes, I forgot seL4, however it isn't much used I think
Has Qualcomm and Apple iOS abandoned it when it changed from OKL4 to seL4?
I thought they use it for isolating their modem firmware from general OS.
next prev parent reply other threads:[~2021-10-12 11:51 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 13:33 The Ravenscar profile and capabilities paradigm Doctor Who
2021-10-11 14:48 ` Luke A. Guest
2021-10-11 19:25 ` Doctor Who
2021-10-11 19:36 ` Luke A. Guest
2021-10-11 19:50 ` Doctor Who
2021-10-12 0:45 ` Luke A. Guest
2021-10-12 0:47 ` Luke A. Guest
2021-10-12 2:31 ` Doctor Who
2021-10-12 2:29 ` Doctor Who
2021-10-12 2:35 ` Doctor Who
2021-10-12 3:19 ` Doctor Who
2021-10-12 5:17 ` Richard Iswara
2021-10-12 6:42 ` Doctor Who
2021-10-12 11:51 ` Richard Iswara [this message]
2021-10-12 11:58 ` Luke A. Guest
2021-10-12 15:04 ` Doctor Who
2021-10-11 15:32 ` Simon Wright
2021-10-11 19:24 ` Doctor Who
2021-10-12 15:01 ` Shark8
2021-10-12 15:02 ` Luke A. Guest
2021-10-12 15:33 ` Shark8
2021-10-12 15:43 ` Luke A. Guest
2021-10-12 18:21 ` Doctor Who
2021-10-12 18:24 ` Doctor Who
2021-10-14 3:46 ` Doctor Who
2021-10-14 15:16 ` Shark8
2021-10-14 16:38 ` Doctor Who
2021-10-14 21:20 ` Simon Wright
2021-10-15 11:21 ` Doctor Who
2021-10-11 15:48 ` Shark8
2021-10-11 19:25 ` Doctor Who
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