/usr/share/systemtap/tapset/pn.stp is in systemtap-common 2.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | // probe-name tapset
// Copyright (C) 2010, 2011 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
%{
#ifndef STP_NEED_PROBE_NAME
#define STP_NEED_PROBE_NAME 1
#endif
%}
/**
* sfunction pn - Returns the active probe name
*
* Description: This function returns the script-level probe point
* associated with a currently running probe handler, including
* wild-card expansion effects. Context: The current probe point.
*/
function pn:string ()
%{ /* pure */ /* unprivileged */
const char* name = CONTEXT->probe_name ?: CONTEXT->probe_point;
strlcpy (STAP_RETVALUE, name, MAXSTRINGLEN);
%}
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