[Bug tapsets/6525] New: need utrace task-finder-based pid->execname, pid->cwd-path-name tables

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

We need a tapset that uses the new task-finder runtime in order to populate and
maintain systemtap script-level globals/functions that allow pid-based data lookup.

Specifically:

function pid2execname:string (pid:long) {}
function pid2cwdpath:string (pid:long) {}
... and maybe more.

These functions could be implemented as embedded-c or script, using globals
that are managed by utrace task-finder callback functions notifying the tapset
of tasks running chdir()/chroot()/exec().  To initially populate the globals
(for preexisting processes), the embedded-c code would need to use possibly
sleepy kernel functions to process task_struct*'s.

-- 
           Summary: need utrace task-finder-based pid->execname, pid->cwd-
                    path-name tables
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: fche at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6525

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