nfsconvert.in
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nfsconvert.in
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	#!@PYTHON@ -tt
	"""
	Read in the deprecated /etc/sysconfig/nfs file and
	set the corresponding values in nfs.conf
	"""

	from __future__ import print_function
	import os
	import sys
	import getopt
	import subprocess
	import configparser

	CONF_NFS = '/etc/nfs.conf'
	CONF_IDMAP = '/etc/idmapd.conf'
	SYSCONF_NFS = '/etc/sysconfig/nfs'
	SYSCONF_BACKUP = ".rpmsave"
	CONF_TOOL = '/usr/sbin/nfsconf'

	# options for nfsd found in RPCNFSDARGS
	OPTS_NFSD = 'dH:p:rR:N:V:stTuUG:L:'
	LONG_NFSD = ['debug', 'host=', 'port=', 'rdma=', 'nfs-version=', 'no-nfs-version=',
	'tcp', 'no-tcp', 'udp', 'no-udp', 'grace-time=', 'lease-time=']
	CONV_NFSD = {'-d': (CONF_NFS, 'nfsd', 'debug', 'all'),
	'-H': (CONF_NFS, 'nfsd', 'host', ','),
	'-p': (CONF_NFS, 'nfsd', 'port', '$1'),
	'-r': (CONF_NFS, 'nfsd', 'rdma', 'nfsrdma'),
	'-R': (CONF_NFS, 'nfsd', 'rdma', '$1'),
	'-N': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
	'-V': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
	'-t': (CONF_NFS, 'nfsd', 'tcp', '1'),
	'-T': (CONF_NFS, 'nfsd', 'tcp', '0'),
	'-u': (CONF_NFS, 'nfsd', 'udp', '1'),
	'-U': (CONF_NFS, 'nfsd', 'udp', '0'),
	'-G': (CONF_NFS, 'nfsd', 'grace-time', '$1'),
	'-L': (CONF_NFS, 'nfsd', 'lease-time', '$1'),
	'$1': (CONF_NFS, 'nfsd', 'threads', '$1'),
	'--debug': (CONF_NFS, 'nfsd', 'debug', 'all'),
	'--host': (CONF_NFS, 'nfsd', 'host', ','),
	'--port': (CONF_NFS, 'nfsd', 'port', '$1'),
	'--rdma': (CONF_NFS, 'nfsd', 'rdma', '$1'),
	'--no-nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
	'--nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
	'--tcp': (CONF_NFS, 'nfsd', 'tcp', '1'),
	'--no-tcp': (CONF_NFS, 'nfsd', 'tcp', '0'),
	'--udp': (CONF_NFS, 'nfsd', 'udp', '1'),
	'--no-udp': (CONF_NFS, 'nfsd', 'udp', '0'),
	'--grace-time': (CONF_NFS, 'nfsd', 'grace-time', '$1'),
	'--lease-time': (CONF_NFS, 'nfsd', 'lease-time', '$1'),
	}

	# options for mountd found in RPCMOUNTDOPTS
	OPTS_MOUNTD = 'go:d:H:p:N:nrs:t:V:'
	LONG_MOUNTD = ['descriptors=', 'debug=', 'nfs-version=', 'no-nfs-version=',
	'port=', 'no-tcp', 'ha-callout=', 'state-directory-path=',
	'num-threads=', 'reverse-lookup', 'manage-gids', 'no-udp']

	CONV_MOUNTD = {'-g': (CONF_NFS, 'mountd', 'manage-gids', '1'),
	'-o': (CONF_NFS, 'mountd', 'descriptors', '$1'),
	'-d': (CONF_NFS, 'mountd', 'debug', '$1'),
	'-H': (CONF_NFS, 'mountd', 'ha-callout', '$1'),
	'-p': (CONF_NFS, 'mountd', 'port', '$1'),
	'-N': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
	'-V': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
	'-n': (CONF_NFS, 'nfsd', 'tcp', '0'),
	'-s': (CONF_NFS, 'mountd', 'stat-directory-path', '$1'),
	'-t': (CONF_NFS, 'mountd', 'threads', '$1'),
	'-r': (CONF_NFS, 'mountd', 'reverse-lookup', '1'),
	'-u': (CONF_NFS, 'nfsd', 'udp', '0'),
	'--manage-gids': (CONF_NFS, 'mountd', 'manage-gids', '1'),
	'--descriptors': (CONF_NFS, 'mountd', 'descriptors', '$1'),
	'--debug': (CONF_NFS, 'mountd', 'debug', '$1'),
	'--ha-callout': (CONF_NFS, 'mountd', 'ha-callout', '$1'),
	'--port': (CONF_NFS, 'mountd', 'port', '$1'),
	'--nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'y'),
	'--no-nfs-version': (CONF_NFS, 'nfsd', 'vers$1', 'n'),
	'--no-tcp': (CONF_NFS, 'nfsd', 'tcp', '0'),
	'--state-directory-path': (CONF_NFS, 'mountd', 'state-directory-path', '$1'),
	'--num-threads': (CONF_NFS, 'mountd', 'threads', '$1'),
	'--reverse-lookup': (CONF_NFS, 'mountd', 'reverse-lookup', '1'),
	'--no-udp': (CONF_NFS, 'nfsd', 'udp', '0'),
	}

	# options for statd found in STATDARG
	OPTS_STATD = 'o:p:T:U:n:P:H:L'
	LONG_STATD = ['outgoing-port=', 'port=', 'name=', 'state-directory-path=',
	'ha-callout=', 'nlm-port=', 'nlm-udp-port=', 'no-notify']
	CONV_STATD = {'-o': (CONF_NFS, 'statd', 'outgoing-port', '$1'),
	'-p': (CONF_NFS, 'statd', 'port', '$1'),
	'-T': (CONF_NFS, 'lockd', 'port', '$1'),
	'-U': (CONF_NFS, 'lockd', 'udp-port', '$1'),
	'-n': (CONF_NFS, 'statd', 'name', '$1'),
	'-P': (CONF_NFS, 'statd', 'state-directory-path', '$1'),
	'-H': (CONF_NFS, 'statd', 'ha-callout', '$1'),
	'-L': (CONF_NFS, 'statd', 'no-notify', '1'),
	'--outgoing-port': (CONF_NFS, 'statd', 'outgoing-port', '$1'),
	'--port': (CONF_NFS, 'statd', 'port', '$1'),
	'--name': (CONF_NFS, 'statd', 'name', '$1'),
	'--state-directory-path': (CONF_NFS, 'statd', 'state-directory-path', '$1'),
	'--ha-callout': (CONF_NFS, 'statd', 'ha-callout', '$1'),
	'--nlm-port': (CONF_NFS, 'lockd', 'port', '$1'),
	'--nlm-udp-port': (CONF_NFS, 'lockd', 'udp-port', '$1'),
	'--no-notify': (CONF_NFS, 'statd', 'no-notify', '1'),
	}

	# options for sm-notify found in SMNOTIFYARGS
	OPTS_SMNOTIFY = 'dm:np:v:P:f'
	CONV_SMNOTIFY = {'-d': (CONF_NFS, 'sm-notify', 'debug', 'all'),
	'-m': (CONF_NFS, 'sm-notify', 'retry-time', '$1'),
	'-n': (CONF_NFS, 'sm-notify', 'update-state', '1'),
	'-p': (CONF_NFS, 'sm-notify', 'outgoing-port', '$1'),
	'-v': (CONF_NFS, 'sm-notify', 'outgoing-addr', '$1'),
	'-f': (CONF_NFS, 'sm-notify', 'force', '1'),
	'-P': (CONF_NFS, 'statd', 'state-directory-path', '$1'),
	}

	# options for idmapd found in RPCIDMAPDARGS
	OPTS_IDMAPD = 'vp:CS'
	CONV_IDMAPD = {'-v': (CONF_IDMAP, 'general', 'verbosity', '+'),
	'-p': (CONF_NFS, 'general', 'pipefs-directory', '$1'),
	'-C': (CONF_IDMAP, 'general', 'client-only', '1'),
	'-S': (CONF_IDMAP, 'general', 'server-only', '1'),
	}

	# options for gssd found in RPCGSSDARGS
	OPTS_GSSD = 'Mnvrp:k:d:t:T:R:lD'
	CONV_GSSD = {'-M': (CONF_NFS, 'gssd', 'use-memcache', '1'),
	'-n': (CONF_NFS, 'gssd', 'root_uses_machine_creds', '0'),
	'-v': (CONF_NFS, 'gssd', 'verbosity', '+'),
	'-r': (CONF_NFS, 'gssd', 'rpc-verbosity', '+'),
	'-p': (CONF_NFS, 'general', 'pipefs-directory', '$1'),
	'-k': (CONF_NFS, 'gssd', 'keytab-file', '$1'),
	'-d': (CONF_NFS, 'gssd', 'cred-cache-directory', '$1'),
	'-t': (CONF_NFS, 'gssd', 'context-timeout', '$1'),
	'-T': (CONF_NFS, 'gssd', 'rpc-timeout', '$1'),
	'-R': (CONF_NFS, 'gssd', 'preferred-realm', '$1'),
	'-l': (CONF_NFS, 'gssd', 'limit-to-legacy-enctypes', '0'),
	'-D': (CONF_NFS, 'gssd', 'avoid-dns', '0'),
	}

	# options for blkmapd found in BLKMAPDARGS
	OPTS_BLKMAPD = ''
	CONV_BLKMAPD = {}

	# meta list of all the getopt lists
	GETOPT_MAPS = [('RPCNFSDARGS', OPTS_NFSD, LONG_NFSD, CONV_NFSD),
	('RPCMOUNTDOPTS', OPTS_MOUNTD, LONG_MOUNTD, CONV_MOUNTD),
	('STATDARG', OPTS_STATD, LONG_STATD, CONV_STATD),
	('STATDARGS', OPTS_STATD, LONG_STATD, CONV_STATD),
	('SMNOTIFYARGS', OPTS_SMNOTIFY, [], CONV_SMNOTIFY),
	('RPCIDMAPDARGS', OPTS_IDMAPD, [], CONV_IDMAPD),
	('RPCGSSDARGS', OPTS_GSSD, [], CONV_GSSD),
	('BLKMAPDARGS', OPTS_BLKMAPD, [], CONV_BLKMAPD),
	]

	# any fixups we need to apply first
	GETOPT_FIXUP = {'RPCNFSDARGS': ('--rdma', '--rdma=nfsrdma'),
	}

	# map for all of the single option values
	VALUE_MAPS = {'LOCKD_TCPPORT': (CONF_NFS, 'lockd', 'port', '$1'),
	'LOCKD_UDPPORT': (CONF_NFS, 'lockd', 'udp-port', '$1'),
	'RPCNFSDCOUNT': (CONF_NFS, 'nfsd', 'threads', '$1'),
	'NFSD_V4_GRACE': (CONF_NFS, 'nfsd', 'grace-time', '$1'),
	'NFSD_V4_LEASE': (CONF_NFS, 'nfsd', 'lease-time', '$1'),
	'MOUNTD_PORT': (CONF_NFS, 'mountd', 'port', '$1'),
	'STATD_PORT': (CONF_NFS, 'statd', 'port', '$1'),
	'STATD_OUTGOING_PORT': (CONF_NFS, 'statd', 'outgoing-port', '$1'),
	'STATD_HA_CALLOUT': (CONF_NFS, 'statd', 'ha-callout', '$1'),
	'GSS_USE_PROXY': (CONF_NFS, 'gssd', 'use-gss-proxy', '$1')
	}

	def eprint(args, *kwargs):
	""" Print error to stderr """
	print(args, file=sys.stderr, *kwargs)

	def makesub(param, value):
	""" Variable substitution """
	return param.replace('$1', value)

	def set_value(value, entry):
	""" Set a configuration value by running nfsconf tool"""
	cfile, section, tag, param = entry

	tag = makesub(tag, value)
	param = makesub(param, value)
	if param == '+':
	param = value
	if param == ',':
	param = value
	args = [CONF_TOOL, "--file", cfile, "--set", section, tag, param]

	try:
	subprocess.check_output(args, stderr=subprocess.STDOUT)
	except subprocess.CalledProcessError as e:
	print("Error running nfs-conf tool:\n %s" % (e.output.decode()))
	print("Args: %s\n" % args)
	raise Exception

	def convert_getopt(optname, options, optstring, longopts, conversions):
	""" Parse option string into seperate config items

	Take a getopt string and a table of conversions
	parse it all and spit out the converted config

	Keyword arguments:
	options -- the argv string to convert
	optstring -- getopt format option list
	conversions -- table of translations
	"""
	optcount = 0
	try:
	args = options.strip('\"').split()
	if optname in GETOPT_FIXUP:
	(k, v) = GETOPT_FIXUP[optname]
	for i, opt in enumerate(args):
	if opt == k:
	args[i] = v
	elif opt == '--':
	break
	optlist, optargs = getopt.gnu_getopt(args, optstring, longopts=longopts)
	except getopt.GetoptError as err:
	eprint(err)
	raise Exception

	setlist = {}
	for (k, v) in optlist:
	if k in conversions:
	# it's already been set once
	param = conversions[k][3]
	tag = k + makesub(conversions[k][2], v)
	if tag in setlist:
	value = setlist[tag][0]
	# is it a cummulative entry
	if param == '+':
	value = str(int(value) + 1)
	if param == ',':
	value += "," + v
	else:
	if param == '+':
	value = "1"
	elif param == ',':
	value = v
	else:
	value = v
	setlist[tag] = (value, conversions[k])
	else:
	if v:
	eprint("Ignoring unrecognised option %s=%s in %s" % (k, v, optname))
	else:
	eprint("Ignoring unrecognised option %s in %s" % (k, optname))


	for v, c in setlist.values():
	try:
	set_value(v, c)
	optcount += 1
	except Exception:
	raise

	i = 1
	for o in optargs:
	opname = '$' + str(i)
	if opname in conversions:
	try:
	set_value(o, conversions[opname])
	optcount += 1
	except Exception:
	raise
	else:
	eprint("Unrecognised trailing arguments")
	raise Exception
	i += 1

	return optcount

	def map_values():
	""" Main function """
	mapcount = 0

	# Lets load the old config
	with open(SYSCONF_NFS) as cfile:
	file_content = '[sysconf]\n' + cfile.read()
	sysconfig = configparser.RawConfigParser()
	sysconfig.read_string(file_content)

	# Map all the getopt option lists
	for (name, opts, lopts, conv) in GETOPT_MAPS:
	if name in sysconfig['sysconf']:
	try:
	mapcount += convert_getopt(name, sysconfig['sysconf'][name], opts,
	lopts, conv)
	except Exception:
	eprint("Error whilst converting %s to nfsconf options." % (name))
	raise

	# Map the single value options
	for name, opts in VALUE_MAPS.items():
	if name in sysconfig['sysconf']:
	try:
	value = sysconfig['sysconf'][name]
	set_value(value.strip('\"'), opts)
	mapcount += 1
	except Exception:
	raise

	# All went well, move aside the old file
	# but dont bother if there were no changes and
	# an old config file already exists
	backupfile = SYSCONF_NFS + SYSCONF_BACKUP
	if mapcount > 0 or not os.path.exists(backupfile):
	try:
	os.replace(SYSCONF_NFS, backupfile)
	except OSError as err:
	eprint("Error moving old config %s: %s" % (SYSCONF_NFS, err))
	raise

	# Main routine
	try:
	map_values()
	except Exception as e:
	eprint(e)
	eprint("Conversion failed. Please correct the error and try again.")
	exit(1)

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