a5425fe575
On s390 and in CDL mode (4k DASD) the call of grub2-install does not work because grub2-install is not able to identify a 4k fdasd partitioned loop device as a grub supported device and fails. As grub2-install is only used to invoke grub2-zipl-setup and has no other job to do we can circumvent this problem by directly calling grub2-zipl-setup instead. Also delete LDL mode support, IBM no longer supports this
395 lines
14 KiB
Python
395 lines
14 KiB
Python
# Copyright (c) 2015 SUSE Linux GmbH. All rights reserved.
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#
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# This file is part of kiwi.
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#
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# kiwi is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# kiwi is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with kiwi. If not, see <http://www.gnu.org/licenses/>
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#
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import glob
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import os
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import logging
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# project
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from kiwi.bootloader.install.base import BootLoaderInstallBase
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from kiwi.command import Command
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from kiwi.defaults import Defaults
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from kiwi.mount_manager import MountManager
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from kiwi.path import Path
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from kiwi.exceptions import (
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KiwiBootLoaderGrubInstallError,
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KiwiBootLoaderGrubPlatformError,
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KiwiBootLoaderGrubDataError
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)
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log = logging.getLogger('kiwi')
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class BootLoaderInstallGrub2(BootLoaderInstallBase):
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"""
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**grub2 bootloader installation**
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"""
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def post_init(self, custom_args):
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"""
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grub2 post initialization method
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:param dict custom_args:
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Contains custom grub2 bootloader arguments
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.. code:: python
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{
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'target_removable': bool,
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'system_volumes': list_of_volumes,
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'firmware': FirmWare_instance,
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'efi_device': string,
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'boot_device': string,
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'root_device': string
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}
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"""
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self.arch = Defaults.get_platform_name()
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self.custom_args = custom_args
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self.install_arguments = []
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self.firmware = None
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self.efi_mount = None
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self.root_mount = None
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self.boot_mount = None
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self.device_mount = None
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self.proc_mount = None
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self.sysfs_mount = None
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self.volumes = None
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self.volumes_mount = []
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self.target_removable = None
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if custom_args and 'target_removable' in custom_args:
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self.target_removable = custom_args['target_removable']
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if custom_args and 'system_volumes' in custom_args:
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self.volumes = custom_args['system_volumes']
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if custom_args and 'firmware' in custom_args:
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self.firmware = custom_args['firmware']
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if self.firmware and self.firmware.efi_mode():
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if not custom_args or 'efi_device' not in custom_args:
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raise KiwiBootLoaderGrubInstallError(
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'EFI device name required for shim installation'
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)
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if not custom_args or 'boot_device' not in custom_args:
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raise KiwiBootLoaderGrubInstallError(
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'boot device name required for grub2 installation'
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)
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if not custom_args or 'root_device' not in custom_args:
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raise KiwiBootLoaderGrubInstallError(
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'root device name required for grub2 installation'
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)
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def install_required(self):
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"""
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Check if grub2 has to be installed
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Take architecture and firmware setup into account to check if
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bootloader code in a boot record is required
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:return: True or False
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:rtype: bool
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"""
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if 'ppc64' in self.arch and self.firmware.opal_mode():
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# OPAL doesn't need a grub2 stage1, just a config file.
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# The machine will be setup to kexec grub2 in user space
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log.info(
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'No grub boot code installation in opal mode on %s', self.arch
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)
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return False
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elif 'arm' in self.arch or self.arch == 'aarch64':
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# On arm grub2 is used for EFI setup only, no install
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# of grub2 boot code makes sense
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log.info(
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'No grub boot code installation on %s', self.arch
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)
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return False
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return True
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def install(self): # noqa: C901
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"""
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Install bootloader on disk device
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"""
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log.info('Installing grub2 on disk %s', self.device)
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if self.target_removable:
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self.install_arguments.append('--removable')
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if Defaults.is_x86_arch(self.arch):
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self.target = 'i386-pc'
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self.install_device = self.device
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self.modules = ' '.join(
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Defaults.get_grub_bios_modules(multiboot=True)
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)
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self.install_arguments.append('--skip-fs-probe')
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elif self.arch.startswith('ppc64'):
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if not self.custom_args or 'prep_device' not in self.custom_args:
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raise KiwiBootLoaderGrubInstallError(
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'prep device name required for grub2 installation on ppc'
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)
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self.target = 'powerpc-ieee1275'
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self.install_device = self.custom_args['prep_device']
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self.modules = ' '.join(Defaults.get_grub_ofw_modules())
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self.install_arguments.append('--skip-fs-probe')
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self.install_arguments.append('--no-nvram')
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elif self.arch.startswith('s390'):
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self.target = 's390x-emu'
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self.install_device = self.device
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self.modules = ' '.join(Defaults.get_grub_s390_modules())
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self.install_arguments.append('--skip-fs-probe')
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self.install_arguments.append('--no-nvram')
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else:
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raise KiwiBootLoaderGrubPlatformError(
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'host architecture %s not supported for grub2 installation' %
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self.arch
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)
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self.root_mount = MountManager(
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device=self.custom_args['root_device']
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)
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if 's390' in self.arch:
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self.boot_mount = MountManager(
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device=self.custom_args['boot_device'],
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mountpoint=self.root_mount.mountpoint + '/boot/zipl'
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)
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else:
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self.boot_mount = MountManager(
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device=self.custom_args['boot_device'],
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mountpoint=self.root_mount.mountpoint + '/boot'
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)
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if self.custom_args.get('efi_device'):
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self.efi_mount = MountManager(
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device=self.custom_args['efi_device'],
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mountpoint=self.root_mount.mountpoint + '/boot/efi'
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)
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self.root_mount.mount()
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if not self.root_mount.device == self.boot_mount.device:
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self.boot_mount.mount()
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if self.efi_mount:
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self.efi_mount.mount()
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if self.volumes:
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for volume_path in Path.sort_by_hierarchy(
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sorted(self.volumes.keys())
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):
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volume_mount = MountManager(
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device=self.volumes[volume_path]['volume_device'],
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mountpoint=self.root_mount.mountpoint + '/' + volume_path
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)
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self.volumes_mount.append(volume_mount)
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volume_mount.mount(
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options=[self.volumes[volume_path]['volume_options']]
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)
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self.device_mount = MountManager(
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device='/dev',
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mountpoint=self.root_mount.mountpoint + '/dev'
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)
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self.proc_mount = MountManager(
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device='/proc',
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mountpoint=self.root_mount.mountpoint + '/proc'
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)
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self.sysfs_mount = MountManager(
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device='/sys',
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mountpoint=self.root_mount.mountpoint + '/sys'
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)
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self.device_mount.bind_mount()
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self.proc_mount.bind_mount()
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self.sysfs_mount.bind_mount()
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# check if a grub installation could be found in the image system
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module_directory = Defaults.get_grub_path(
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self.root_mount.mountpoint, self.target, raise_on_error=False
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)
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if not module_directory:
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raise KiwiBootLoaderGrubDataError(
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'No grub2 installation found in {0} for target {1}'.format(
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self.root_mount.mountpoint, self.target
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)
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)
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module_directory = module_directory.replace(
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self.root_mount.mountpoint, ''
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)
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boot_directory = '/boot'
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# wipe existing grubenv to allow the grub installer to create a new one
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grubenv_glob = os.sep.join(
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[self.root_mount.mountpoint, 'boot', '*', 'grubenv']
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)
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for grubenv in glob.glob(grubenv_glob):
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Path.wipe(grubenv)
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# install grub2 boot code
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if self.firmware.get_partition_table_type() == 'dasd':
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# On s390 and in CDL mode (4k DASD) the call of grub2-install
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# does not work because grub2-install is not able to identify
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# a 4k fdasd partitioned device as a grub supported device
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# and fails. As grub2-install is only used to invoke
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# grub2-zipl-setup and has no other job to do we can
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# circumvent this problem by directly calling grub2-zipl-setup
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# instead.
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Command.run(
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[
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'chroot', self.root_mount.mountpoint,
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'grub2-zipl-setup', '--keep'
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]
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)
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zipl_config_file = ''.join(
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[
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self.root_mount.mountpoint, '/boot/zipl/config'
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]
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)
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zipl2grub_config_file_orig = ''.join(
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[
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self.root_mount.mountpoint,
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'/etc/default/zipl2grub.conf.in.orig'
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]
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)
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if os.path.exists(zipl2grub_config_file_orig):
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Command.run(
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[
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'mv', zipl2grub_config_file_orig,
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zipl2grub_config_file_orig.replace('.orig', '')
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]
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)
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if os.path.exists(zipl_config_file):
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Command.run(
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['mv', zipl_config_file, zipl_config_file + '.kiwi']
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)
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else:
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Command.run(
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[
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'chroot', self.root_mount.mountpoint,
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self._get_grub2_install_tool_name(
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self.root_mount.mountpoint
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)
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] + self.install_arguments + [
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'--directory', module_directory,
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'--boot-directory', boot_directory,
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'--target', self.target,
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'--modules', self.modules,
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self.install_device
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]
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)
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if self.firmware and self.firmware.efi_mode() == 'uefi':
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shim_install = self._get_shim_install_tool_name(
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self.root_mount.mountpoint
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)
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# if shim-install does _not_ exist the fallback mechanism
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# has applied at the bootloader/config level and we expect
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# no further tool calls to be required
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if shim_install:
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# Before we call shim-install, the grub installer binary is
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# replaced by a noop. Actually there is no reason for
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# shim-install to call the grub installer because it should
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# only setup the system for EFI secure boot which does not
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# require any bootloader code in the master boot record.
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# In addition kiwi has called the grub installer right
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# before
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self._disable_grub2_install(self.root_mount.mountpoint)
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Command.run(
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[
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'chroot', self.root_mount.mountpoint,
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'shim-install', '--removable',
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self.install_device
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]
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)
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# restore the grub installer noop
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self._enable_grub2_install(self.root_mount.mountpoint)
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def _disable_grub2_install(self, root_path):
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if os.access(root_path, os.W_OK):
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grub2_install = ''.join(
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[
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root_path, '/usr/sbin/',
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self._get_grub2_install_tool_name(root_path)
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]
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)
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grub2_install_backup = ''.join(
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[grub2_install, '.orig']
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)
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grub2_install_noop = ''.join(
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[root_path, '/bin/true']
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)
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Command.run(
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['cp', '-p', grub2_install, grub2_install_backup]
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)
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Command.run(
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['cp', grub2_install_noop, grub2_install]
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)
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def _enable_grub2_install(self, root_path):
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if os.access(root_path, os.W_OK):
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grub2_install = ''.join(
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[
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root_path, '/usr/sbin/',
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self._get_grub2_install_tool_name(root_path)
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]
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)
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grub2_install_backup = ''.join(
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[grub2_install, '.orig']
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)
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if os.path.exists(grub2_install_backup):
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Command.run(
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['mv', grub2_install_backup, grub2_install]
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)
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def _get_grub2_install_tool_name(self, root_path):
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return self._get_tool_name(
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root_path, lookup_list=['grub2-install', 'grub-install']
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)
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def _get_shim_install_tool_name(self, root_path):
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return self._get_tool_name(
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root_path, lookup_list=['shim-install'], fallback_on_not_found=False
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)
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def _get_tool_name(
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self, root_path, lookup_list, fallback_on_not_found=True
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):
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for tool in lookup_list:
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if Path.which(filename=tool, root_dir=root_path):
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return tool
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if fallback_on_not_found:
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# no tool from the list was found, we intentionally don't
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# raise here but return the default tool name and raise
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# an exception at invocation time in order to log the
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# expected call and its arguments
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return lookup_list[0]
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def __del__(self):
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log.info('Cleaning up %s instance', type(self).__name__)
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for volume_mount in reversed(self.volumes_mount):
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volume_mount.umount()
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if self.device_mount:
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self.device_mount.umount()
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if self.proc_mount:
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self.proc_mount.umount()
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if self.sysfs_mount:
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self.sysfs_mount.umount()
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if self.efi_mount:
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self.efi_mount.umount()
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if self.boot_mount:
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self.boot_mount.umount()
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if self.root_mount:
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self._enable_grub2_install(self.root_mount.mountpoint)
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self.root_mount.umount()
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