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#!/usr/bin/env python3
#
# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This file is part of VyOS.
#
# VyOS is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# VyOS 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
# VyOS. If not, see <https://www.gnu.org/licenses/>.
from pathlib import Path
from sys import exit
from vyos.system import disk, grub, image, compat, SYSTEM_CFG_VER
from vyos.template import render
def cfg_check_update() -> bool:
"""Check if GRUB structure update is required
Returns:
bool: False if not required, True if required
"""
current_ver = grub.get_cfg_ver()
if current_ver and current_ver >= SYSTEM_CFG_VER:
return False
return True
if __name__ == '__main__':
if image.is_live_boot():
exit(0)
if image.is_running_as_container():
exit(0)
# Skip everything if update is not required
if not cfg_check_update():
exit(0)
# find root directory of persistent storage
root_dir = disk.find_persistence()
# read current GRUB config
grub_cfg_main = f'{root_dir}/{grub.GRUB_CFG_MAIN}'
vars = grub.vars_read(grub_cfg_main)
modules = grub.modules_read(grub_cfg_main)
vyos_menuentries = compat.parse_menuentries(grub_cfg_main)
vyos_versions = compat.find_versions(vyos_menuentries)
unparsed_items = compat.filter_unparsed(grub_cfg_main)
# compatibilty for raid installs
search_root = compat.get_search_root(unparsed_items)
common_dict = {}
common_dict['search_root'] = search_root
# find default values
default_entry = vyos_menuentries[int(vars['default'])]
default_settings = {
'default': grub.gen_version_uuid(default_entry['version']),
'bootmode': default_entry['bootmode'],
'console_type': default_entry['console_type'],
'console_num': default_entry['console_num'],
'console_speed': default_entry['console_speed']
}
vars.update(default_settings)
# create new files
grub_cfg_vars = f'{root_dir}/{grub.CFG_VYOS_VARS}'
grub_cfg_modules = f'{root_dir}/{grub.CFG_VYOS_MODULES}'
grub_cfg_platform = f'{root_dir}/{grub.CFG_VYOS_PLATFORM}'
grub_cfg_menu = f'{root_dir}/{grub.CFG_VYOS_MENU}'
grub_cfg_options = f'{root_dir}/{grub.CFG_VYOS_OPTIONS}'
Path(image.GRUB_DIR_VYOS).mkdir(exist_ok=True)
grub.vars_write(grub_cfg_vars, vars)
grub.modules_write(grub_cfg_modules, modules)
grub.common_write(grub_common=common_dict)
render(grub_cfg_menu, grub.TMPL_GRUB_MENU, {})
render(grub_cfg_options, grub.TMPL_GRUB_OPTS, {})
# create menu entries
for vyos_ver in vyos_versions:
boot_opts = None
for entry in vyos_menuentries:
if entry.get('version') == vyos_ver and entry.get(
'bootmode') == 'normal':
boot_opts = entry.get('boot_opts')
grub.version_add(vyos_ver, root_dir, boot_opts)
# update structure version
cfg_ver = compat.update_cfg_ver(root_dir)
grub.write_cfg_ver(cfg_ver, root_dir)
if compat.mode():
compat.render_grub_cfg(root_dir)
else:
render(grub_cfg_main, grub.TMPL_GRUB_MAIN, {})
exit(0)
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