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# vi: ts=4 expandtab
#
# Copyright (C) 2014 Rackspace, US Inc.
# Copyright (C) 2016 Matthew Thode.
#
# Author: Nate House <nathan.house@rackspace.com>
# Author: Matthew Thode <prometheanfire@gentoo.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from cloudinit import distros
from cloudinit import helpers
from cloudinit import log as logging
from cloudinit import util
from cloudinit.distros import net_util
from cloudinit.distros.parsers.hostname import HostnameConf
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
locale_conf_fn = '/etc/locale.gen'
network_conf_fn = '/etc/conf.d/net'
resolve_conf_fn = '/etc/resolv.conf'
hostname_conf_fn = '/etc/conf.d/hostname'
init_cmd = ['service'] # init scripts
def __init__(self, name, cfg, paths):
distros.Distro.__init__(self, name, cfg, paths)
# This will be used to restrict certain
# calls from repeatly happening (when they
# should only happen say once per instance...)
self._runner = helpers.Runners(paths)
self.osfamily = 'gentoo'
# Fix sshd restarts
cfg['ssh_svcname'] = '/etc/init.d/sshd'
def apply_locale(self, locale, out_fn=None):
if not out_fn:
out_fn = self.locale_conf_fn
util.subp(['locale-gen', '-G', locale], capture=False)
# "" provides trailing newline during join
lines = [
util.make_header(),
'LANG="%s"' % locale,
"",
]
util.write_file(out_fn, "\n".join(lines))
def install_packages(self, pkglist):
self.update_package_sources()
self.package_command('', pkgs=pkglist)
def _write_network(self, settings):
entries = net_util.translate_network(settings)
LOG.debug("Translated ubuntu style network settings %s into %s",
settings, entries)
dev_names = entries.keys()
nameservers = []
for (dev, info) in entries.items():
if 'dns-nameservers' in info:
nameservers.extend(info['dns-nameservers'])
if dev == 'lo':
continue
net_fn = self.network_conf_fn + '.' + dev
dns_nameservers = info.get('dns-nameservers')
if isinstance(dns_nameservers, (list, tuple)):
dns_nameservers = str(tuple(dns_nameservers)).replace(',', '')
# eth0, {'auto': True, 'ipv6': {}, 'bootproto': 'dhcp'}
# lo, {'dns-nameservers': ['10.0.1.3'], 'ipv6': {}, 'auto': True}
results = ''
if info.get('bootproto') == 'dhcp':
results += 'config_{name}="dhcp"'.format(name=dev)
else:
results += (
'config_{name}="{ip_address} netmask {netmask}"\n'
'mac_{name}="{hwaddr}"\n'
).format(name=dev, ip_address=info.get('address'),
netmask=info.get('netmask'),
hwaddr=info.get('hwaddress'))
results += 'routes_{name}="default via {gateway}"\n'.format(
name=dev,
gateway=info.get('gateway')
)
if info.get('dns-nameservers'):
results += 'dns_servers_{name}="{dnsservers}"\n'.format(
name=dev,
dnsservers=dns_nameservers)
util.write_file(net_fn, results)
self._create_network_symlink(dev)
if info.get('auto'):
cmd = ['rc-update', 'add', 'net.{name}'.format(name=dev),
'default']
try:
(_out, err) = util.subp(cmd)
if len(err):
LOG.warn("Running %s resulted in stderr output: %s",
cmd, err)
except util.ProcessExecutionError:
util.logexc(LOG, "Running interface command %s failed",
cmd)
if nameservers:
util.write_file(self.resolve_conf_fn,
convert_resolv_conf(nameservers))
return dev_names
@staticmethod
def _create_network_symlink(interface_name):
file_path = '/etc/init.d/net.{name}'.format(name=interface_name)
if not util.is_link(file_path):
util.sym_link('/etc/init.d/net.lo', file_path)
def _bring_up_interface(self, device_name):
cmd = ['/etc/init.d/net.%s' % device_name, 'restart']
LOG.debug("Attempting to run bring up interface %s using command %s",
device_name, cmd)
try:
(_out, err) = util.subp(cmd)
if len(err):
LOG.warn("Running %s resulted in stderr output: %s", cmd, err)
return True
except util.ProcessExecutionError:
util.logexc(LOG, "Running interface command %s failed", cmd)
return False
def _bring_up_interfaces(self, device_names):
use_all = False
for d in device_names:
if d == 'all':
use_all = True
if use_all:
# Grab device names from init scripts
cmd = ['ls', '/etc/init.d/net.*']
try:
(_out, err) = util.subp(cmd)
if len(err):
LOG.warn("Running %s resulted in stderr output: %s", cmd,
err)
except util.ProcessExecutionError:
util.logexc(LOG, "Running interface command %s failed", cmd)
return False
devices = [x.split('.')[2] for x in _out.split(' ')]
return distros.Distro._bring_up_interfaces(self, devices)
else:
return distros.Distro._bring_up_interfaces(self, device_names)
def _write_hostname(self, your_hostname, out_fn):
conf = None
try:
# Try to update the previous one
# so lets see if we can read it first.
conf = self._read_hostname_conf(out_fn)
except IOError:
pass
if not conf:
conf = HostnameConf('')
conf.set_hostname(your_hostname)
gentoo_hostname_config = 'hostname="%s"' % conf
gentoo_hostname_config = gentoo_hostname_config.replace('\n', '')
util.write_file(out_fn, gentoo_hostname_config, 0o644)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.hostname_conf_fn)
return self.hostname_conf_fn, sys_hostname
@staticmethod
def _read_hostname_conf(filename):
conf = HostnameConf(util.load_file(filename))
conf.parse()
return conf
def _read_hostname(self, filename, default=None):
hostname = None
try:
conf = self._read_hostname_conf(filename)
hostname = conf.hostname
except IOError:
pass
if not hostname:
return default
return hostname
def set_timezone(self, tz):
distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz))
def package_command(self, command, args=None, pkgs=None):
if pkgs is None:
pkgs = []
cmd = list('emerge')
# Redirect output
cmd.append("--quiet")
if args and isinstance(args, str):
cmd.append(args)
elif args and isinstance(args, list):
cmd.extend(args)
if command:
cmd.append(command)
pkglist = util.expand_package_list('%s-%s', pkgs)
cmd.extend(pkglist)
# Allow the output of this to flow outwards (ie not be captured)
util.subp(cmd, capture=False)
def update_package_sources(self):
self._runner.run("update-sources", self.package_command,
["-u", "world"], freq=PER_INSTANCE)
def convert_resolv_conf(settings):
"""Returns a settings string formatted for resolv.conf."""
result = ''
if isinstance(settings, list):
for ns in settings:
result += 'nameserver %s\n' % ns
return result
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