Felten on Sony's rootkit update [LWN.net]

Felten on Sony's rootkit update

Posted Nov 7, 2005 16:58 UTC (Mon) by mmarq (guest, #2332)
In reply to: Felten on Sony's rootkit update by nix
Parent article: Felten on Sony's rootkit update

Yes its not that easy i belive! but far as the XOK/ExOS is concerned, full posix *seems* quite straighforward... and though the design isnt a SASOS with real capabilities *IT COULD VERY WELL BE* in my opinion...

http://pdos.csail.mit.edu/exo/exo-internals/internals.html

I've been long time now on this forum(and others) and peeked on LKML sometimes, and i've witnessed that many of the hacks that were pulled are quite ingenious and extraordinary... so isn't any creativity left ?

Other projects also seems to adress POSIX file systems on a SASOS with "real" capabilities. The common denominator is that they almost all run on top a microkernel like L4 or Mach, and so POSIX could be left for a concurrent server. The question is couldn't they had been running on top of an Exokernel(exoLinux?) in the form of shared library instead of a server ?

ftp://ftp.cse.unsw.edu.au/pub/doc/papers/UNSW/9704.pdf (SASOS with real capalilities but no POSIX)

http://citeseer.ist.psu.edu/cache/papers/cs/294/ftp:zSzzS...
(SASOS with full POSIX but a *soft* kind of capabilities)

http://citeseer.ist.psu.edu/cache/papers/cs/13726/ftp:zSz...
(a different kind of SASOS with POSIX and real capabilities)

Contrary to many on this forum this isnt my area of expertize, but i belive the *correct approach* could be engineered. The question is if impenetrability (MAC on steroids), persistence, and Clusters on steroids(provided by natural distributed adress space of a SASOS), better performance(without doubt it seems) and super manageability(many isolated parts)dont worth the effort of *pig* details?

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Felten on Sony's rootkit update

Posted Nov 7, 2005 17:47 UTC (Mon) by mmarq (guest, #2332) [Link]

I forgot to mention that real-time approaches could be tremendously facilitaded in many configurations , like
4. Nested OS
5. Dual-OS/Dual-Core
6. Migration Between OSes
7. Migration Within OS
in this excelente simple exposition http://lwn.net/Articles/143323/ , and that could really take out CELF of the letargy, and be very importante for the future.

As in EROS, that got forward after the Drivers layer got out of the microkernel, many dead ends can be avoided if the right sequence of isolated parts are integrated in the right order, and *the smaller the better* seems quite fit for a starting rule. So my thought of Exokernels.