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RE: System call support in reversible debugging
- From: "Jakob Engblom" <jakob at virtutech dot com>
- To: "'Sean Chen'" <sean dot chen1234 at gmail dot com>, "'Michael Snyder'" <msnyder at vmware dot com>
- Cc: "'Hui Zhu'" <teawater at gmail dot com>, <gdb at sourceware dot org>
- Date: Thu, 3 Dec 2009 10:00:35 +0100
- Subject: RE: System call support in reversible debugging
- References: <5e81cb500911262231g57f693dwc885576172e016e1@mail.gmail.com> <5e81cb500911270711wb99d531i111d064f05ef03b4@mail.gmail.com> <daef60380911270716r44fe2efcr79930beacc1f38ed@mail.gmail.com> <5e81cb500911270742j546062f2jca7441a912ffad87@mail.gmail.com> <4B10154F.7070902@vmware.com> <5e81cb500911271745t1a119520l4944919d2139e8ae@mail.gmail.com> <4B11607C.7000500@vmware.com> <daef60380911300427p20b2e9bege4087bbcd18bc82a@mail.gmail.com> <5e81cb500911300539r52e8be5dva54d32c734978021@mail.gmail.com> <4B142C54.7070207@vmware.com> <5e81cb500912021857i3b0d8f42rde841973757b2d48@mail.gmail.com>
> > Not a black box -- but not a detailed implementation either.
> > Each system call has a specification -- that's all we need to
> > understand. ?The specification tells what user-visible external
> > side effects can be expected (eg. this buffer will be filled).
> > Changes that are internal to the kernel do not concern us.
>
> Thanks. I understand your concern. Does Linux kernel provide such an
> official specification? If so, could you throw me a hint on where to
> get it? Since we have all of the side effects, recording the system
> calls are feasible and trustable.
I guess these have to be the header files specifying the function call
prototypes?
Or is something else also done for precord?
/jakob