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Filename : nfsd-trace.stp

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#!/usr/bin/stap

// Copyright (c) 2017 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.


probe nfsd.proc.entries {
  printf("%s %s %s %s ", tz_ctime(gettimeofday_s()), client_ip, name, argstr);
  filename .= "" // ensure this var exists for all nfsd probes
  if (fh)
    printf("%s%s%s",
           task_dentry_path(task_current(),
                            fh->fh_dentry,
                            fh->fh_export->ex_path->mnt),
           (filename == "") ? "" : "/",
           filename)
  printf("\n")
}