Hi Robert,
This is my bad - sorry about the problem and thanks for fixing it. I no
longer work in this area but I'll log the bug against Solaris (I'm not
sure how to log them externally).
Thanks again.
Jon.
I have found an issue with how DTrace handles the #pragma D depends_on
option when using dtrace -Lpath to add additional directories. I have
confirmed that this is a problem on illumos and OS X 10.6.6.
Presumably it also affects FreeBSD.
When looking for a dependency it does not search the entire path to
try and resolve it, but rather only the local directory. So if you
have a file with the following:
#pragma D depends_on procfs.d
that was in another directory, say, /home/rm/local/lib/dtrace, DTrace
will only look for procfs.d in /home/rm/local/lib/dtrace/procfs.d and
never anywhere else on the library path, which includes
/usr/lib/dtrace where the file resides.
Attached is a patch that applies cleanly to Illumos. This patch
searches the entire libdir path for the file using the first one that
it finds. This patch also adds a DTest that catches this issue.
This patch was developed at Joyent with review from Bryan Cantrill. It
is copyright by Joyent and licensed under the CDDL. It should apply
cleanly to the Mac OS X and FreeBSD codebases. If people from the
respective communities would like me to file bugs or there is some
other process to facilitate this fix getting out there, please let me
know.
Thanks,
Robert
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