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Re: retrieve EIP/RIP for syscall in audit



On Thursday, July 12, 2012 03:04:11 PM Xiaokui Shu wrote:
> Hello,
> 
> I have a question about one of the features of audit.
> Can I use audit to log the EIP/RIP at time of syscall? There is a "-i"
> flag in strace that does the work.

No. The audit system does not collect that information. Maybe trace points or 
systemtap would be a better approach for that kind of thing?

-Steve

> When I compare the mechanisms of audit and strace(ptrace), I find
> maybe it is not possible for strace to do so. Audit is on the kernel
> side of a syscall, and does not know the audited program's internal
> information (I am not sure if I understand it right). However, one can
> still fetch extra information out of the syscall event (e.g. block a
> syscall when coming, check the audited program stack and clear
> blocking), but it may bring much overhead.
> 
> Best,
> Xiaokui
> 
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