#!/usr/sbin/dtrace -s
/*
* Copyright (c) 2012 Robert N. M. Watson
* All rights reserved.
*
* This software was developed at the University of Cambridge Computer
* Laboratory with support from a grant from Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This script creates a trace of NFS RPCs, NFS attribute cache
* activity, and NFS access cache activity, along with the system call
* that instigated the activity. Notice that NFS events may happen
* outside of the context of a system call, most likely due to the VM
* system paging from NFS, in which case the system call name is
* reported as "-"
*/
#pragma D option quiet
dtrace:::BEGIN
{
printf("probe\targ0\texecutable\tsyscall\n");
}
syscall:::entry
{
self->syscallname = probefunc;
}
syscall:::return
{
self->syscallname = "";
}
nfscl:::
/self->syscallname != 0 && self->syscallname != ""/
{
printf("%s\t%s\t%s\t%s\n", probemod, stringof(arg0), execname,
self->syscallname);
}
nfscl:::
/self->syscallname == 0 || self->syscallname == ""/
{
printf("%s\t%s\t%s\t%s\n", probemod, stringof(arg0), execname,
self->syscallname);
}
plain