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#!/usr/bin/env python3
#
# Copyright (C) 2011-2019 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/>.
#
# Generate a set of systemtap functions for translating various
# RPC enum values into strings
#
# python gensystemtap.py */*.x > libvirt_functions.stp
#
import re
import sys
funcs = {}
types = {}
status = {}
auth = {}
def load_file(fh):
instatus = False
intype = False
inauth = False
for line in fh:
if re.search(r'''enum\s+virNetMessageType''', line):
intype = True
elif re.search(r'''enum\s+virNetMessageStatus''', line):
instatus = True
elif re.search(r'''enum remote_auth_type''', line):
inauth = True
elif "}" in line:
intype = False
instatus = False
inauth = False
elif instatus:
m = re.search(r'''^\s+VIR_NET_(\w+)\s*=\s*(\d+),?$''', line)
if m is not None:
status[m.group(2)] = m.group(1).lower()
elif intype:
m = re.search(r'''^\s+VIR_NET_(\w+)\s*=\s*(\d+),?$''', line)
if m is not None:
types[m.group(2)] = m.group(1).lower()
elif inauth:
m = re.search(r'''^\s+REMOTE_AUTH_(\w+)\s*=\s*(\d+),?$''', line)
if m is not None:
auth[m.group(2)] = m.group(1).lower()
else:
m = re.search(r'''(?:VIR_)?(\w+?)(?:_PROTOCOL)?''' +
r'''_PROGRAM\s*=\s*0x([a-fA-F0-9]+)\s*;''', line)
if m is not None:
funcs[m.group(1).lower()] = {
"id": int(m.group(2), 16),
"version": None,
"progs": []
}
continue
m = re.search(r'''(?:VIR_)?(\w+?)(?:_PROTOCOL)?_''' +
r'''(?:PROGRAM|PROTOCOL)_VERSION\s*=\s*(\d+)\s*;''',
line)
if m is not None:
funcs[m.group(1).lower()]["version"] = m.group(2)
continue
m = re.search(r'''(?:VIR_)?(\w+?)(?:_PROTOCOL)?''' +
r'''_PROC_(.*?)\s+=\s+(\d+)''', line)
if m is not None:
funcs[m.group(1).lower()]["progs"].insert(
int(m.group(3)), m.group(2).lower())
for file in sys.argv[1:]:
with open(file, "r") as fh:
load_file(fh)
def genfunc(name, varname, types):
print("function %s(%s, verbose)" % (name, varname))
print("{")
first = True
for typename in sorted(types.keys()):
cond = "} else if"
if first:
cond = "if"
first = False
print(" %s (%s == %s) {" % (cond, varname, typename))
print(" %sstr = \"%s\"" % (varname, types[typename]))
print(" } else {")
print(" %sstr = \"unknown\";" % varname)
print(" verbose = 1;")
print(" }")
print(" if (verbose) {")
print(" %sstr = %sstr . sprintf(\":%%d\", %s)" %
(varname, varname, varname))
print(" }")
print(" return %sstr;" % varname)
print("}")
genfunc("libvirt_rpc_auth_name", "type", auth)
genfunc("libvirt_rpc_type_name", "type", types)
genfunc("libvirt_rpc_status_name", "status", status)
print("function libvirt_rpc_program_name(program, verbose)")
print("{")
first = True
for funcname in sorted(funcs.keys()):
cond = "} else if"
if first:
cond = "if"
first = False
print(" %s (program == %s) {" % (cond, funcs[funcname]["id"]))
print(" programstr = \"%s\"" % funcname)
print(" } else {")
print(" programstr = \"unknown\";")
print(" verbose = 1;")
print(" }")
print(" if (verbose) {")
print(" programstr = programstr . sprintf(\":%d\", program)")
print(" }")
print(" return programstr;")
print("}")
print("function libvirt_rpc_procedure_name(program, version, proc, verbose)")
print("{")
first = True
for prog in sorted(funcs.keys()):
cond = "} else if"
if first:
cond = "if"
first = False
print(" %s (program == %s && version == %s) {" %
(cond, funcs[prog]["id"], funcs[prog]["version"]))
pfirst = True
for id in range(len(funcs[prog]["progs"])):
pcond = "} else if"
if pfirst:
pcond = "if"
pfirst = False
print(" %s (proc == %s) {" % (pcond, id + 1))
print(" procstr = \"%s\";" % funcs[prog]["progs"][id])
print(" } else {")
print(" procstr = \"unknown\";")
print(" verbose = 1;")
print(" }")
print(" } else {")
print(" procstr = \"unknown\";")
print(" verbose = 1;")
print(" }")
print(" if (verbose) {")
print(" procstr = procstr . sprintf(\":%d\", proc)")
print(" }")
print(" return procstr;")
print("}")
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