Hi,
is it possible in dtrace to use regexp or wildcards?
I would like to trace fop_ probes if the vnode v_path
contains matches some regexp..
E.g. I would like to see fop operations on files which have foo in their
v_path:
::fop_*:entry
/probefunc != "fop_open" && ((vnode_t *)arg0)->v_path ==
"*foo*"/
{
...
}
Thanks,
Pavel
Hi Pavel,
DTrace has a few string manipulation subroutines and strstr()
will probably do what you want here. It''s not too pretty
but I think this does it:
fbt::fop_*:entry
/probefunc != "fop_open" && ((vnode_t *)arg0)->v_path != 0
&&
strstr(stringof(((vnode_t *)arg0)->v_path), "foo") != NULL/
{
printf("%s\n", stringof(((vnode_t *)arg0)->v_path));
}
Let me know if it isn''t what you had in mind.
Jon.
> is it possible in dtrace to use regexp or wildcards?
> I would like to trace fop_ probes if the vnode v_path
> contains matches some regexp..
>
> E.g. I would like to see fop operations on files which have foo in
> their v_path:
>
> ::fop_*:entry
> /probefunc != "fop_open" && ((vnode_t *)arg0)->v_path
== "*foo*"/
> {
> ...
> }
>
>
> Thanks,
> Pavel
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
Thanks Jon. This meets my needs. --Pavel Jon Haslam wrote:> Hi Pavel, > > DTrace has a few string manipulation subroutines and strstr() > will probably do what you want here. It''s not too pretty > but I think this does it: > > fbt::fop_*:entry > /probefunc != "fop_open" && ((vnode_t *)arg0)->v_path != 0 && > strstr(stringof(((vnode_t *)arg0)->v_path), "foo") != NULL/ > { > printf("%s\n", stringof(((vnode_t *)arg0)->v_path)); > } > > Let me know if it isn''t what you had in mind. > > Jon. > > >> is it possible in dtrace to use regexp or wildcards? >> I would like to trace fop_ probes if the vnode v_path >> contains matches some regexp.. >> >> E.g. I would like to see fop operations on files which have foo in >> their v_path: >> >> ::fop_*:entry >> /probefunc != "fop_open" && ((vnode_t *)arg0)->v_path == "*foo*"/ >> { >> ... >> } >> >> >> Thanks, >> Pavel >> _______________________________________________ >> dtrace-discuss mailing list >> dtrace-discuss at opensolaris.org > > _______________________________________________ > dtrace-discuss mailing list > dtrace-discuss at opensolaris.org