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#!/usr/bin/stap
#
# Copyright (C) 2011 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see
# <http://www.gnu.org/licenses/>.
#
# Author: Daniel P. Berrange <berrange@redhat.com>
#
# This script will monitor all RPC messages going in/out of libvirtd and
# any connected clients. Example output:
#
# 0.000 begin
# 2.632 C + 0x7f1ea57dc010 local=127.0.0.1;0 remote=127.0.0.1;0
# 2.632 C > 0x7f1ea57dc010 msg=remote.1.auth_list(call, ok, 0) len=28
# 2.632 + S 0x1c1f710 local=127.0.0.1;0 remote=127.0.0.1;0
# 2.632 > S 0x1c1f710 msg=remote.1.auth_list(call, ok, 0) len=28
# 2.633 < S 0x1c1f710 msg=remote.1.auth_list(reply, ok, 0) len=36
# 2.633 C < 0x7f1ea57dc010 msg=remote.1.auth_list(reply, ok, 0) len=36
# 2.633 C > 0x7f1ea57dc010 msg=remote.1.open(call, ok, 1) len=40
# 2.633 > S 0x1c1f710 msg=remote.1.open(call, ok, 1) len=40
# 2.639 < S 0x1c1f710 msg=remote.1.open(reply, ok, 1) len=28
# 2.639 C < 0x7f1ea57dc010 msg=remote.1.open(reply, ok, 1) len=28
# 2.639 C > 0x7f1ea57dc010 msg=remote.1.get_uri(call, ok, 2) len=28
# 2.639 > S 0x1c1f710 msg=remote.1.get_uri(call, ok, 2) len=28
# 2.639 < S 0x1c1f710 msg=remote.1.get_uri(reply, ok, 2) len=48
# 2.640 C < 0x7f1ea57dc010 msg=remote.1.get_uri(reply, ok, 2) len=48
# 2.640 C > 0x7f1ea57dc010 msg=remote.1.domain_lookup_by_id(call, ok, 3) len=32
# 2.640 > S 0x1c1f710 msg=remote.1.domain_lookup_by_id(call, ok, 3) len=32
# 2.640 < S 0x1c1f710 msg=remote.1.domain_lookup_by_id(reply, error, 3) len=180
# 2.641 C < 0x7f1ea57dc010 msg=remote.1.domain_lookup_by_id(reply, error, 3) len=180
# 2.641 C > 0x7f1ea57dc010 msg=remote.1.close(call, ok, 4) len=28
# 2.641 > S 0x1c1f710 msg=remote.1.close(call, ok, 4) len=28
# 2.641 < S 0x1c1f710 msg=remote.1.close(reply, ok, 4) len=28
# 2.641 C < 0x7f1ea57dc010 msg=remote.1.close(reply, ok, 4) len=28
# 2.641 C - 0x7f1ea57dc010 local= remote=
# 2.641 - S 0x1c1f710 local=127.0.0.1;0 remote=127.0.0.1;0
global start
# If this is set to '1', then all the raw RPC values are postfixed
# to the string translation
global verbose=0
# Print a string, with a timestamp relative to the start of the script
function print_ts(msg)
{
now = gettimeofday_ns() / (1000*1000)
delta = (now - start)
printf("%3d.%03d %s\n", (delta / 1000), (delta % 1000), msg);
}
# Just so we know the script is now running
probe begin {
start = gettimeofday_ns() / (1000*1000)
print_ts("begin")
}
# Format an RPC message
function msginfo(prefix, client, len, prog, version, proc, type, status, serial)
{
progstr = libvirt_rpc_program_name(prog, verbose);
procstr = libvirt_rpc_procedure_name(prog, version, proc, verbose);
typestr = libvirt_rpc_type_name(type, verbose);
statusstr = libvirt_rpc_status_name(status, verbose);
print_ts(sprintf("%s %-16p msg=%s.%d.%s(%s, %s, %d) len=%d",
prefix, client, progstr, version, procstr,
typestr, statusstr, serial, len));
}
# Catch all tx/rx of RPC messages by clients & libvirtd
probe libvirt.rpc.server_client_msg_rx {
if (len)
msginfo("> S", client, len, prog, vers, proc, type, status, serial)
}
probe libvirt.rpc.server_client_msg_tx_queue {
if (len)
msginfo("< S", client, len, prog, vers, proc, type, status, serial)
}
probe libvirt.rpc.client_msg_rx {
if (len)
msginfo("C <", client, len, prog, vers, proc, type, status, serial)
}
probe libvirt.rpc.client_msg_tx_queue {
if (len)
msginfo("C >", client, len, prog, vers, proc, type, status, serial)
}
# Used to track connection info
global localAddrs
global remoteAddrs;
global clientSocks
global serverSocks
# Watch for all sockets opened/closed
probe libvirt.rpc.socket_new {
localAddrs[pid(), sock] = localAddr;
remoteAddrs[pid(), sock] = remoteAddr;
}
probe libvirt.rpc.socket_free {
if (refs == 1) {
delete localAddrs[pid(), sock];
delete remoteAddrs[pid(), sock];
}
}
# Print whenever a client opens / closes a connection
probe libvirt.rpc.client_new {
clientSocks[pid(), client] = sock;
print_ts(sprintf("C + %-16p local=%s remote=%s", client, localAddrs[pid(), sock], remoteAddrs[pid(), sock]));
}
probe libvirt.rpc.client_free {
if (refs == 1) {
print_ts(sprintf("C - %-16p local=%s remote=%s", client,
localAddrs[pid(), clientSocks[pid(), client]],
remoteAddrs[pid(), clientSocks[pid(), client]]));
delete clientSocks[pid(), client];
}
}
# print whenever the server receives a client connection open/close
probe libvirt.rpc.server_client_new {
serverSocks[pid(), client] = sock;
print_ts(sprintf("+ S %-16p local=%s remote=%s", client, localAddrs[pid(), sock], remoteAddrs[pid(), sock]));
}
probe libvirt.rpc.server_client_free {
if (refs == 1) {
print_ts(sprintf("- S %-16p local=%s remote=%s", client,
localAddrs[pid(), serverSocks[pid(), client]],
remoteAddrs[pid(), serverSocks[pid(), client]]));
delete serverSocks[pid(), client];
}
}
probe libvirt.rpc.socket_send_fd {
print_ts(sprintf("= %-16p send fd=%d", sock, fd));
}
probe libvirt.rpc.socket_recv_fd {
print_ts(sprintf("= %-16p recv fd=%d", sock, fd));
}
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