[Bug runtime/14491] New: Add a proper stapdyn transport layer

["jistone at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14491

             Bug #: 14491
           Summary: Add a proper stapdyn transport layer
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap@sourceware.org
        ReportedBy: jistone@redhat.com
            Blocks: 14178
    Classification: Unclassified


Right now there's not transport layer at all in stapdyn.  Communication is only
going stapdyn->module via inferior calls, and script output is writing directly
on the target's stdout/err.

We really need a means for bidirectional communication, both for control
messages and for general script output.  For a first draft, I propose listening
on a socket in stapdyn, opening that in the target with an inferior call, and
then send messages just as we do with staprun and kernel modules.

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