223 lines
7.9 KiB
Python
223 lines
7.9 KiB
Python
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#
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# Copyright (C) 2019 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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import os
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import os.path
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from pyanaconda import ntp
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from pyanaconda.core import service, util
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from pyanaconda.core.configuration.anaconda import conf
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from pyanaconda.timezone import NTP_SERVICE
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from pyanaconda.anaconda_loggers import get_module_logger
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from pyanaconda.modules.common.errors.installation import TimezoneConfigurationError
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from pyanaconda.modules.common.task import Task
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from pyanaconda.timezone import is_valid_timezone
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from blivet import arch
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__all__ = ["ConfigureHardwareClockTask", "ConfigureNTPTask", "ConfigureTimezoneTask"]
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log = get_module_logger(__name__)
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class ConfigureHardwareClockTask(Task):
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"""Installation task for setting the Hardware Clock from the System Clock."""
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def __init__(self, is_utc):
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"""Create a new task.
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:param bool is_utc: Indicate which timescale the Hardware Clock is set to
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"""
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super().__init__()
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self._is_utc = is_utc
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@property
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def name(self):
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return "Set the Hardware Clock from the System Clock"
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def run(self):
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"""Perform the actual work of setting the Hardware Clock from the System Clock."""
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if arch.is_s390():
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log.debug("There is not Hardware Clock on s390x.")
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return
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if conf.system.can_set_hardware_clock:
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cmd = "hwclock"
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args = ["--systohc"]
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if self._is_utc:
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args.append("--utc")
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else:
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args.append("--local")
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util.execWithRedirect(cmd, args)
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class ConfigureTimezoneTask(Task):
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"""Installation task for timezone configuration."""
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def __init__(self, sysroot, timezone, is_utc):
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"""Create a new task.
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:param str sysroot: a path to the root of the installed system
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:param str timezone: time zone to set
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:param bool is_utc: whether time is UTC or local
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"""
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super().__init__()
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self._sysroot = sysroot
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self._timezone = timezone
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self._is_utc = is_utc
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@property
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def name(self):
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return "Configure time zone"
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def run(self):
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"""Perform the actual work of setting up timezone."""
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self._correct_timezone()
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self._make_timezone_symlink()
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self._write_etc_adjtime()
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def _correct_timezone(self):
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"""Ensure the timezone is valid."""
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if not is_valid_timezone(self._timezone):
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# this should never happen, but for pity's sake
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log.warning("Timezone %s set in kickstart is not valid, "
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"falling back to default (America/New_York).", self._timezone)
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self._timezone = "America/New_York"
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def _make_timezone_symlink(self):
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"""Create the symlink that actually defines timezone."""
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# we want to create a relative symlink
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tz_file = "/usr/share/zoneinfo/" + self._timezone
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rooted_tz_file = os.path.normpath(self._sysroot + tz_file)
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relative_path = os.path.normpath("../" + tz_file)
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link_path = os.path.normpath(self._sysroot + "/etc/localtime")
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if not os.access(rooted_tz_file, os.R_OK):
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log.error("Timezone to be linked (%s) doesn't exist", rooted_tz_file)
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return
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try:
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# os.symlink fails if link_path exists, so try to remove it first
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os.remove(link_path)
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except OSError:
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pass
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try:
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os.symlink(relative_path, link_path)
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except OSError as oserr:
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log.error("Error when symlinking timezone (from %s): %s",
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rooted_tz_file, oserr.strerror)
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def _write_etc_adjtime(self):
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"""Write /etc/adjtime contents.
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:raise: TimezoneConfigurationError
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"""
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if arch.is_s390():
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# there is no Hardware clock on s390(x)
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return
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try:
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with open(os.path.normpath(self._sysroot + "/etc/adjtime"), "r") as fobj:
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lines = fobj.readlines()
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except OSError:
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lines = ["0.0 0 0.0\n", "0\n"]
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try:
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with open(os.path.normpath(self._sysroot + "/etc/adjtime"), "w") as fobj:
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fobj.write(lines[0])
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fobj.write(lines[1])
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if self._is_utc:
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fobj.write("UTC\n")
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else:
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fobj.write("LOCAL\n")
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except OSError as e:
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msg = "Error while writing /etc/adjtime file: {}".format(e.strerror)
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raise TimezoneConfigurationError(msg) from e
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class ConfigureNTPTask(Task):
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"""Installation task for NTP configuration."""
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def __init__(self, sysroot, ntp_enabled, ntp_servers):
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"""Create a new task.
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:param str sysroot: a path to the root of the installed system
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:param bool ntp_enabled: is NTP enabled or not
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:param ntp_servers: list of NTP servers and pools
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:type ntp_servers: list of str
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"""
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super().__init__()
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self._sysroot = sysroot
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self._ntp_enabled = ntp_enabled
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self._ntp_servers = ntp_servers
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@property
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def name(self):
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return "Configure NTP"
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def run(self):
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"""Perform the actual work of setting up NTP."""
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self._enable_service()
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self._write_configuration()
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def _enable_service(self):
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"""Enable or disable the chrony service."""
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if not service.is_service_installed(NTP_SERVICE, root=self._sysroot):
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log.debug("The NTP service is not installed.")
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return
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if self._ntp_enabled:
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service.enable_service(NTP_SERVICE, root=self._sysroot)
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else:
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service.disable_service(NTP_SERVICE, root=self._sysroot)
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def _write_configuration(self):
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"""Write the chrony configuration."""
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if not (self._ntp_enabled and self._ntp_servers):
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log.debug("The NTP service is not enabled or configured.")
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return
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chronyd_conf_path = os.path.normpath(self._sysroot + ntp.NTP_CONFIG_FILE)
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if os.path.exists(chronyd_conf_path):
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log.debug("Modifying installed chrony configuration")
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try:
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ntp.save_servers_to_config(
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self._ntp_servers,
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conf_file_path=chronyd_conf_path
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)
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except ntp.NTPconfigError as ntperr:
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log.warning("Failed to save NTP configuration: %s", ntperr)
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# use chrony conf file from installation environment when
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# chrony is not installed (chrony conf file is missing)
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else:
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log.debug("Creating chrony configuration based on the "
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"configuration from installation environment")
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try:
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ntp.save_servers_to_config(
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self._ntp_servers,
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conf_file_path=ntp.NTP_CONFIG_FILE,
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out_file_path=chronyd_conf_path
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)
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except ntp.NTPconfigError as ntperr:
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log.warning("Failed to save NTP configuration without chrony package: %s",
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ntperr)
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