diff options
| -rw-r--r-- | data/config-mode-dependencies/vyos-1x.json | 3 | ||||
| -rw-r--r-- | git | 0 | ||||
| -rw-r--r-- | interface-definitions/include/version/interfaces-version.xml.i | 2 | ||||
| -rw-r--r-- | python/vyos/ifconfig/bond.py | 13 | ||||
| -rw-r--r-- | python/vyos/ifconfig/ethernet.py | 34 | ||||
| -rw-r--r-- | python/vyos/utils/dict.py | 59 | ||||
| -rwxr-xr-x | src/conf_mode/interfaces-bonding.py | 38 | ||||
| -rwxr-xr-x | src/conf_mode/interfaces-ethernet.py | 237 | ||||
| -rwxr-xr-x | src/migration-scripts/interfaces/30-to-31 | 71 |
9 files changed, 420 insertions, 37 deletions
diff --git a/data/config-mode-dependencies/vyos-1x.json b/data/config-mode-dependencies/vyos-1x.json index 6c86642c7..4d73c844c 100644 --- a/data/config-mode-dependencies/vyos-1x.json +++ b/data/config-mode-dependencies/vyos-1x.json @@ -6,6 +6,9 @@ "group_resync": ["conntrack", "nat", "policy-route"] }, "http_api": {"https": ["https"]}, + "interfaces_bonding": { + "ethernet": ["interfaces-ethernet"] + }, "load_balancing_wan": { "conntrack": ["conntrack"], "conntrack_sync": ["conntrack_sync"] diff --git a/interface-definitions/include/version/interfaces-version.xml.i b/interface-definitions/include/version/interfaces-version.xml.i index 3d11ce888..76c5d3c05 100644 --- a/interface-definitions/include/version/interfaces-version.xml.i +++ b/interface-definitions/include/version/interfaces-version.xml.i @@ -1,3 +1,3 @@ <!-- include start from include/version/interfaces-version.xml.i --> -<syntaxVersion component='interfaces' version='30'></syntaxVersion> +<syntaxVersion component='interfaces' version='31'></syntaxVersion> <!-- include end --> diff --git a/python/vyos/ifconfig/bond.py b/python/vyos/ifconfig/bond.py index d1d7d48c4..45e6e4c16 100644 --- a/python/vyos/ifconfig/bond.py +++ b/python/vyos/ifconfig/bond.py @@ -92,6 +92,19 @@ class BondIf(Interface): } }} + @staticmethod + def get_inherit_bond_options() -> list: + """ + Returns list of option + which are inherited from bond interface to member interfaces + :return: List of interface options + :rtype: list + """ + options = [ + 'mtu' + ] + return options + def remove(self): """ Remove interface from operating system. Removing the interface diff --git a/python/vyos/ifconfig/ethernet.py b/python/vyos/ifconfig/ethernet.py index 285542057..aa1e87744 100644 --- a/python/vyos/ifconfig/ethernet.py +++ b/python/vyos/ifconfig/ethernet.py @@ -75,6 +75,40 @@ class EthernetIf(Interface): }, }} + @staticmethod + def get_bond_member_allowed_options() -> list: + """ + Return list of options which are allowed for changing, + when interface is a bond member + :return: List of interface options + :rtype: list + """ + bond_allowed_sections = [ + 'description', + 'disable', + 'disable_flow_control', + 'disable_link_detect', + 'duplex', + 'eapol.ca_certificate', + 'eapol.certificate', + 'eapol.passphrase', + 'mirror.egress', + 'mirror.ingress', + 'offload.gro', + 'offload.gso', + 'offload.lro', + 'offload.rfs', + 'offload.rps', + 'offload.sg', + 'offload.tso', + 'redirect', + 'ring_buffer.rx', + 'ring_buffer.tx', + 'speed', + 'hw_id' + ] + return bond_allowed_sections + def __init__(self, ifname, **kargs): super().__init__(ifname, **kargs) self.ethtool = Ethtool(ifname) diff --git a/python/vyos/utils/dict.py b/python/vyos/utils/dict.py index 9484eacdd..d36b6fcfb 100644 --- a/python/vyos/utils/dict.py +++ b/python/vyos/utils/dict.py @@ -199,6 +199,31 @@ def dict_search_recursive(dict_object, key, path=[]): for x in dict_search_recursive(j, key, new_path): yield x + +def dict_set(key_path, value, dict_object): + """ Set value to Python dictionary (dict_object) using path to key delimited by dot (.). + The key will be added if it does not exist. + """ + path_list = key_path.split(".") + dynamic_dict = dict_object + if len(path_list) > 0: + for i in range(0, len(path_list)-1): + dynamic_dict = dynamic_dict[path_list[i]] + dynamic_dict[path_list[len(path_list)-1]] = value + +def dict_delete(key_path, dict_object): + """ Delete key in Python dictionary (dict_object) using path to key delimited by dot (.). + """ + path_dict = dict_object + path_list = key_path.split('.') + inside = path_list[:-1] + if not inside: + del dict_object[path_list] + else: + for key in path_list[:-1]: + path_dict = path_dict[key] + del path_dict[path_list[len(path_list)-1]] + def dict_to_list(d, save_key_to=None): """ Convert a dict to a list of dicts. @@ -228,6 +253,39 @@ def dict_to_list(d, save_key_to=None): return collect +def dict_to_paths_values(conf: dict) -> dict: + """ + Convert nested dictionary to simple dictionary, where key is a path is delimited by dot (.). + """ + list_of_paths = [] + dict_of_options ={} + for path in dict_to_key_paths(conf): + str_path = '.'.join(path) + list_of_paths.append(str_path) + + for path in list_of_paths: + dict_of_options[path] = dict_search(path,conf) + + return dict_of_options +def dict_to_key_paths(d: dict) -> list: + """ Generator to return list of key paths from dict of list[str]|str + """ + def func(d, path): + if isinstance(d, dict): + if not d: + yield path + for k, v in d.items(): + for r in func(v, path + [k]): + yield r + elif isinstance(d, list): + yield path + elif isinstance(d, str): + yield path + else: + raise ValueError('object is not a dict of strings/list of strings') + for r in func(d, []): + yield r + def dict_to_paths(d: dict) -> list: """ Generator to return list of paths from dict of list[str]|str """ @@ -305,3 +363,4 @@ class FixedDict(dict): if k not in self._allowed: raise ConfigError(f'Option "{k}" has no defined default') super().__setitem__(k, v) + diff --git a/src/conf_mode/interfaces-bonding.py b/src/conf_mode/interfaces-bonding.py index 0bd306ed0..1179e3e4f 100755 --- a/src/conf_mode/interfaces-bonding.py +++ b/src/conf_mode/interfaces-bonding.py @@ -18,7 +18,6 @@ import os from sys import exit from netifaces import interfaces - from vyos.config import Config from vyos.configdict import get_interface_dict from vyos.configdict import is_node_changed @@ -34,10 +33,13 @@ from vyos.configverify import verify_source_interface from vyos.configverify import verify_vlan_config from vyos.configverify import verify_vrf from vyos.ifconfig import BondIf +from vyos.ifconfig.ethernet import EthernetIf from vyos.ifconfig import Section from vyos.utils.dict import dict_search +from vyos.utils.dict import dict_to_paths_values from vyos.configdict import has_address_configured from vyos.configdict import has_vrf_configured +from vyos.configdep import set_dependents, call_dependents from vyos import ConfigError from vyos import airbag airbag.enable() @@ -90,7 +92,6 @@ def get_config(config=None): # determine which members have been removed interfaces_removed = leaf_node_changed(conf, base + [ifname, 'member', 'interface']) - # Reset config level to interfaces old_level = conf.get_level() conf.set_level(['interfaces']) @@ -102,6 +103,10 @@ def get_config(config=None): tmp = {} for interface in interfaces_removed: + # if member is deleted from bond, add dependencies to call + # ethernet commit again in apply function + # to apply options under ethernet section + set_dependents('ethernet', conf, interface) section = Section.section(interface) # this will be 'ethernet' for 'eth0' if conf.exists([section, interface, 'disable']): tmp[interface] = {'disable': ''} @@ -116,9 +121,21 @@ def get_config(config=None): if dict_search('member.interface', bond): for interface, interface_config in bond['member']['interface'].items(): + + interface_ethernet_config = conf.get_config_dict( + ['interfaces', 'ethernet', interface], + key_mangling=('-', '_'), + get_first_key=True, + no_tag_node_value_mangle=True, + with_defaults=False, + with_recursive_defaults=False) + + interface_config['config_paths'] = dict_to_paths_values(interface_ethernet_config) + # Check if member interface is a new member if not conf.exists_effective(base + [ifname, 'member', 'interface', interface]): bond['shutdown_required'] = {} + interface_config['new_added'] = {} # Check if member interface is disabled conf.set_level(['interfaces']) @@ -151,7 +168,6 @@ def get_config(config=None): # bond members must not have a VRF attached tmp = has_vrf_configured(conf, interface) if tmp: interface_config['has_vrf'] = {} - return bond @@ -212,6 +228,14 @@ def verify(bond): if 'has_vrf' in interface_config: raise ConfigError(error_msg + 'it has a VRF assigned!') + if 'new_added' in interface_config and 'config_paths' in interface_config: + for option_path, option_value in interface_config['config_paths'].items(): + if option_path in EthernetIf.get_bond_member_allowed_options() : + continue + if option_path in BondIf.get_inherit_bond_options(): + continue + raise ConfigError(error_msg + f'it has a "{option_path.replace(".", " ")}" assigned!') + if 'primary' in bond: if bond['primary'] not in bond['member']['interface']: raise ConfigError(f'Primary interface of bond "{bond_name}" must be a member interface') @@ -227,13 +251,17 @@ def generate(bond): def apply(bond): b = BondIf(bond['ifname']) - if 'deleted' in bond: # delete interface b.remove() else: b.update(bond) - + if dict_search('member.interface_remove', bond): + try: + call_dependents() + except ConfigError: + raise ConfigError('Error in updating ethernet interface ' + 'after deleting it from bond') return None if __name__ == '__main__': diff --git a/src/conf_mode/interfaces-ethernet.py b/src/conf_mode/interfaces-ethernet.py index f3e65ad5e..7374a29f7 100755 --- a/src/conf_mode/interfaces-ethernet.py +++ b/src/conf_mode/interfaces-ethernet.py @@ -15,6 +15,7 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. import os +import pprint from glob import glob from sys import exit @@ -35,6 +36,7 @@ from vyos.configverify import verify_vrf from vyos.configverify import verify_bond_bridge_member from vyos.ethtool import Ethtool from vyos.ifconfig import EthernetIf +from vyos.ifconfig import BondIf from vyos.pki import find_chain from vyos.pki import encode_certificate from vyos.pki import load_certificate @@ -42,6 +44,9 @@ from vyos.pki import wrap_private_key from vyos.template import render from vyos.utils.process import call from vyos.utils.dict import dict_search +from vyos.utils.dict import dict_to_paths_values +from vyos.utils.dict import dict_set +from vyos.utils.dict import dict_delete from vyos.utils.file import write_file from vyos import ConfigError from vyos import airbag @@ -51,6 +56,90 @@ airbag.enable() cfg_dir = '/run/wpa_supplicant' wpa_suppl_conf = '/run/wpa_supplicant/{ifname}.conf' +def update_bond_options(conf: Config, eth_conf: dict) -> list: + """ + Return list of blocked options if interface is a bond member + :param conf: Config object + :type conf: Config + :param eth_conf: Ethernet config dictionary + :type eth_conf: dict + :return: List of blocked options + :rtype: list + """ + blocked_list = [] + bond_name = list(eth_conf['is_bond_member'].keys())[0] + config_without_defaults = conf.get_config_dict( + ['interfaces', 'ethernet', eth_conf['ifname']], + key_mangling=('-', '_'), + get_first_key=True, + no_tag_node_value_mangle=True, + with_defaults=False, + with_recursive_defaults=False) + config_with_defaults = conf.get_config_dict( + ['interfaces', 'ethernet', eth_conf['ifname']], + key_mangling=('-', '_'), + get_first_key=True, + no_tag_node_value_mangle=True, + with_defaults=True, + with_recursive_defaults=True) + bond_config_with_defaults = conf.get_config_dict( + ['interfaces', 'bonding', bond_name], + key_mangling=('-', '_'), + get_first_key=True, + no_tag_node_value_mangle=True, + with_defaults=True, + with_recursive_defaults=True) + eth_dict_paths = dict_to_paths_values(config_without_defaults) + eth_path_base = ['interfaces', 'ethernet', eth_conf['ifname']] + + #if option is configured under ethernet section + for option_path, option_value in eth_dict_paths.items(): + bond_option_value = dict_search(option_path, bond_config_with_defaults) + + #If option is allowed for changing then continue + if option_path in EthernetIf.get_bond_member_allowed_options(): + continue + # if option is inherited from bond then set valued from bond interface + if option_path in BondIf.get_inherit_bond_options(): + # If option equals to bond option then do nothing + if option_value == bond_option_value: + continue + else: + # if ethernet has option and bond interface has + # then copy it from bond + if bond_option_value is not None: + if is_node_changed(conf, eth_path_base + option_path.split('.')): + Warning( + f'Cannot apply "{option_path.replace(".", " ")}" to "{option_value}".' \ + f' Interface "{eth_conf["ifname"]}" is a bond member.' \ + f' Option is inherited from bond "{bond_name}"') + dict_set(option_path, bond_option_value, eth_conf) + continue + # if ethernet has option and bond interface does not have + # then delete it form dict and do not apply it + else: + if is_node_changed(conf, eth_path_base + option_path.split('.')): + Warning( + f'Cannot apply "{option_path.replace(".", " ")}".' \ + f' Interface "{eth_conf["ifname"]}" is a bond member.' \ + f' Option is inherited from bond "{bond_name}"') + dict_delete(option_path, eth_conf) + blocked_list.append(option_path) + + # if inherited option is not configured under ethernet section but configured under bond section + for option_path in BondIf.get_inherit_bond_options(): + bond_option_value = dict_search(option_path, bond_config_with_defaults) + if bond_option_value is not None: + if option_path not in eth_dict_paths: + if is_node_changed(conf, eth_path_base + option_path.split('.')): + Warning( + f'Cannot apply "{option_path.replace(".", " ")}" to "{dict_search(option_path, config_with_defaults)}".' \ + f' Interface "{eth_conf["ifname"]}" is a bond member. ' \ + f'Option is inherited from bond "{bond_name}"') + dict_set(option_path, bond_option_value, eth_conf) + eth_conf['bond_blocked_changes'] = blocked_list + return None + def get_config(config=None): """ Retrive CLI config as dictionary. Dictionary can never be empty, as at least the @@ -68,6 +157,8 @@ def get_config(config=None): base = ['interfaces', 'ethernet'] ifname, ethernet = get_interface_dict(conf, base) + if 'is_bond_member' in ethernet: + update_bond_options(conf, ethernet) if 'deleted' not in ethernet: if pki: ethernet['pki'] = pki @@ -80,26 +171,20 @@ def get_config(config=None): return ethernet -def verify(ethernet): - if 'deleted' in ethernet: - return None - ifname = ethernet['ifname'] - verify_interface_exists(ifname) - verify_mtu(ethernet) - verify_mtu_ipv6(ethernet) - verify_dhcpv6(ethernet) - verify_address(ethernet) - verify_vrf(ethernet) - verify_bond_bridge_member(ethernet) - verify_eapol(ethernet) - verify_mirror_redirect(ethernet) - ethtool = Ethtool(ifname) - # No need to check speed and duplex keys as both have default values. +def verify_speed_duplex(ethernet: dict, ethtool: Ethtool): + """ + Verify speed and duplex + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + :param ethtool: Ethernet object + :type ethtool: Ethtool + """ if ((ethernet['speed'] == 'auto' and ethernet['duplex'] != 'auto') or - (ethernet['speed'] != 'auto' and ethernet['duplex'] == 'auto')): - raise ConfigError('Speed/Duplex missmatch. Must be both auto or manually configured') + (ethernet['speed'] != 'auto' and ethernet['duplex'] == 'auto')): + raise ConfigError( + 'Speed/Duplex missmatch. Must be both auto or manually configured') if ethernet['speed'] != 'auto' and ethernet['duplex'] != 'auto': # We need to verify if the requested speed and duplex setting is @@ -107,37 +192,66 @@ def verify(ethernet): speed = ethernet['speed'] duplex = ethernet['duplex'] if not ethtool.check_speed_duplex(speed, duplex): - raise ConfigError(f'Adapter does not support changing speed and duplex '\ - f'settings to: {speed}/{duplex}!') + raise ConfigError( + f'Adapter does not support changing speed ' \ + f'and duplex settings to: {speed}/{duplex}!') + +def verify_flow_control(ethernet: dict, ethtool: Ethtool): + """ + Verify flow control + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + :param ethtool: Ethernet object + :type ethtool: Ethtool + """ if 'disable_flow_control' in ethernet: if not ethtool.check_flow_control(): - raise ConfigError('Adapter does not support changing flow-control settings!') + raise ConfigError( + 'Adapter does not support changing flow-control settings!') + +def verify_ring_buffer(ethernet: dict, ethtool: Ethtool): + """ + Verify ring buffer + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + :param ethtool: Ethernet object + :type ethtool: Ethtool + """ if 'ring_buffer' in ethernet: max_rx = ethtool.get_ring_buffer_max('rx') if not max_rx: - raise ConfigError('Driver does not support RX ring-buffer configuration!') + raise ConfigError( + 'Driver does not support RX ring-buffer configuration!') max_tx = ethtool.get_ring_buffer_max('tx') if not max_tx: - raise ConfigError('Driver does not support TX ring-buffer configuration!') + raise ConfigError( + 'Driver does not support TX ring-buffer configuration!') rx = dict_search('ring_buffer.rx', ethernet) if rx and int(rx) > int(max_rx): - raise ConfigError(f'Driver only supports a maximum RX ring-buffer '\ + raise ConfigError(f'Driver only supports a maximum RX ring-buffer ' \ f'size of "{max_rx}" bytes!') tx = dict_search('ring_buffer.tx', ethernet) if tx and int(tx) > int(max_tx): - raise ConfigError(f'Driver only supports a maximum TX ring-buffer '\ + raise ConfigError(f'Driver only supports a maximum TX ring-buffer ' \ f'size of "{max_tx}" bytes!') - # verify offloading capabilities + +def verify_offload(ethernet: dict, ethtool: Ethtool): + """ + Verify offloading capabilities + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + :param ethtool: Ethernet object + :type ethtool: Ethtool + """ if dict_search('offload.rps', ethernet) != None: - if not os.path.exists(f'/sys/class/net/{ifname}/queues/rx-0/rps_cpus'): + if not os.path.exists(f'/sys/class/net/{ethernet["ifname"]}/queues/rx-0/rps_cpus'): raise ConfigError('Interface does not suport RPS!') - driver = ethtool.get_driver_name() # T3342 - Xen driver requires special treatment if driver == 'vif': @@ -145,14 +259,73 @@ def verify(ethernet): raise ConfigError('Xen netback drivers requires scatter-gatter offloading '\ 'for MTU size larger then 1500 bytes') - if {'is_bond_member', 'mac'} <= set(ethernet): - Warning(f'changing mac address "{mac}" will be ignored as "{ifname}" ' \ - f'is a member of bond "{is_bond_member}"'.format(**ethernet)) +def verify_allowedbond_changes(ethernet: dict): + """ + Verify changed options if interface is in bonding + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + """ + if 'bond_blocked_changes' in ethernet: + for option in ethernet['bond_blocked_changes']: + raise ConfigError(f'Cannot configure "{option.replace(".", " ")}"' \ + f' on interface "{ethernet["ifname"]}".' \ + f' Interface is a bond member') + + +def verify(ethernet): + if 'deleted' in ethernet: + return None + if 'is_bond_member' in ethernet: + verify_bond_member(ethernet) + else: + verify_ethernet(ethernet) + + +def verify_bond_member(ethernet): + """ + Verification function for ethernet interface which is in bonding + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + """ + ifname = ethernet['ifname'] + verify_interface_exists(ifname) + verify_eapol(ethernet) + verify_mirror_redirect(ethernet) + ethtool = Ethtool(ifname) + verify_speed_duplex(ethernet, ethtool) + verify_flow_control(ethernet, ethtool) + verify_ring_buffer(ethernet, ethtool) + verify_offload(ethernet, ethtool) + verify_allowedbond_changes(ethernet) + +def verify_ethernet(ethernet): + """ + Verification function for simple ethernet interface + :param ethernet: dictionary which is received from get_interface_dict + :type ethernet: dict + """ + ifname = ethernet['ifname'] + verify_interface_exists(ifname) + verify_mtu(ethernet) + verify_mtu_ipv6(ethernet) + verify_dhcpv6(ethernet) + verify_address(ethernet) + verify_vrf(ethernet) + verify_bond_bridge_member(ethernet) + verify_eapol(ethernet) + verify_mirror_redirect(ethernet) + ethtool = Ethtool(ifname) + # No need to check speed and duplex keys as both have default values. + verify_speed_duplex(ethernet, ethtool) + verify_flow_control(ethernet, ethtool) + verify_ring_buffer(ethernet, ethtool) + verify_offload(ethernet, ethtool) # use common function to verify VLAN configuration verify_vlan_config(ethernet) return None + def generate(ethernet): # render real configuration file once wpa_supplicant_conf = wpa_suppl_conf.format(**ethernet) @@ -192,7 +365,8 @@ def generate(ethernet): pki_ca_cert = ethernet['pki']['ca'][ca_cert_name] loaded_ca_cert = load_certificate(pki_ca_cert['certificate']) ca_full_chain = find_chain(loaded_ca_cert, loaded_ca_certs) - ca_chains.append('\n'.join(encode_certificate(c) for c in ca_full_chain)) + ca_chains.append( + '\n'.join(encode_certificate(c) for c in ca_full_chain)) write_file(ca_cert_file_path, '\n'.join(ca_chains)) @@ -219,6 +393,7 @@ if __name__ == '__main__': c = get_config() verify(c) generate(c) + apply(c) except ConfigError as e: print(e) diff --git a/src/migration-scripts/interfaces/30-to-31 b/src/migration-scripts/interfaces/30-to-31 new file mode 100755 index 000000000..894106ef4 --- /dev/null +++ b/src/migration-scripts/interfaces/30-to-31 @@ -0,0 +1,71 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2021-2023 VyOS maintainers and contributors +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 or later 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/>. +# +# Deletes Wireguard peers if they have the same public key as the router has. + +import json +from sys import argv +from sys import exit +from vyos.configtree import ConfigTree +from vyos.ifconfig import EthernetIf +from vyos.ifconfig import BondIf +from vyos.utils.dict import dict_to_paths_values + +if len(argv) < 2: + print("Must specify file name!") + exit(1) + +file_name = argv[1] +with open(file_name, 'r') as f: + config_file = f.read() + base = ['interfaces', 'bonding'] + +config = ConfigTree(config_file) +if not config.exists(base): + # Nothing to do + exit(0) +for bond in config.list_nodes(base): + member_base = base + [bond, 'member', 'interface'] + if config.exists(member_base): + for interface in config.return_values(member_base): + if_base = ['interfaces', 'ethernet', interface] + if config.exists(if_base): + config_ethernet = json.loads(config.get_subtree(if_base).to_json()) + eth_dict_paths = dict_to_paths_values(config_ethernet) + for option_path, option_value in eth_dict_paths.items(): + # If option is allowed for changing then continue + converted_path = option_path.replace('-','_') + if converted_path in EthernetIf.get_bond_member_allowed_options(): + continue + # if option is inherited from bond then continue + if converted_path in BondIf.get_inherit_bond_options(): + continue + option_path_list = option_path.split('.') + config.delete(if_base + option_path_list) + del option_path_list[-1] + # delete empty node from config + while len(option_path_list) > 0: + if config.list_nodes(if_base + option_path_list): + break + config.delete(if_base + option_path_list) + del option_path_list[-1] + +try: + with open(file_name, 'w') as f: + f.write(config.to_string()) +except OSError as e: + print(f'Failed to save the modified config: {e}') + exit(1) |