l4v2: l4linux2.6 Syscall logging via IPC in l4
gtg259m at mail.gatech.edu
Thu Jul 7 21:50:13 CEST 2005
But I want this capability to be built into the kernel (l4 microkernel), and I
would rather not use 3rd party packages. Right now Im logging in
Thread::do_send. I get the trap state as such:
Trap_state *ts = (Trap_state*)_utcb_handler;
from there i get: Unsigned32 intNo = ts->err >> 3;
and Unsigned32 eax = ts->eax, and so on for ebx, etc...
I am simply looking for an easy to filter out non-linux-syscalls so I only pay
attention to linux syscalls. I think intNo gets changed somehow bc checking if
(intNo == 80) does not log anything!
Quoting Martin Pohlack <mp26 at os.inf.tu-dresden.de>:
Andrew Davenport wrote:
> I am trying to log linux syscalls from l4linux2.6 on top of l4v2. What is
> simplest way to log this at the IPC level (i have enabled exception IPC) and
> all the parameters?
There are several approaches you might want to check out:
- Use IPC tracing in the kernel debugger,
- Use rt_mon or its successor GRTMon to instrument l4linux code. There
is a Diplomathesis about GRTMon "A Generalized Approach to Runtime
Monitoring for Real-Time Systems" available from here:
I'm not sure whether grtmon is already in our remote CVS, but I don't
see a reason why it could not be ...
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