On Tue, Dec 04, 2007 at 12:16:32AM -0800, Richard L. Hamilton wrote:
> > How do I determine the system calls that are made by
> > svc_register()?
>
> You could always write a program that calls it, and truss that program.
> if you put a write(1,"-----",5) or something recognizable like that
> right before the call, it should be easy to spot in the output and ignore
> everything before that (i.e. all the dynamic linking at startup and such).
Truss: feh. Use DTrace:
pid$target::svc_register:entry
{
self->follow = 1;
}
syscall:::entry
/self->follow/
{
@[probefunc] = count();
}
pid$target::svc_register:return
/self->follow/
{
self->follow = 0;
}
It looks like there's an ioctl in there that you could use to uniquely
identify such calls:
syscall::ioctl:entry
/self->follow/
{
@ioctl[arg0] = count();
}
Then verify with another DTrace invocation:
# dtrace -n 'syscall::ioctl:entry/arg0 == <value>/{ @[ustack()] = count(); }'
Adam
--
Adam Leventhal, FishWorks http://blogs.sun.com/ahl
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