diff options
Diffstat (limited to 'src/helpers/vyos_net_name')
| -rwxr-xr-x | src/helpers/vyos_net_name | 143 |
1 files changed, 81 insertions, 62 deletions
diff --git a/src/helpers/vyos_net_name b/src/helpers/vyos_net_name index 518e204f9..f5de182c6 100755 --- a/src/helpers/vyos_net_name +++ b/src/helpers/vyos_net_name @@ -18,42 +18,35 @@ import os import re import time import logging +import logging.handlers import tempfile -import threading +from pathlib import Path from sys import argv from vyos.configtree import ConfigTree from vyos.defaults import directories from vyos.utils.process import cmd from vyos.utils.boot import boot_configuration_complete +from vyos.utils.locking import Lock from vyos.migrate import ConfigMigrate +# Define variables vyos_udev_dir = directories['vyos_udev_dir'] -vyos_log_dir = '/run/udev/log' -vyos_log_file = os.path.join(vyos_log_dir, 'vyos-net-name') - config_path = '/opt/vyatta/etc/config/config.boot' -lock = threading.Lock() - -try: - os.mkdir(vyos_log_dir) -except FileExistsError: - pass - -logging.basicConfig(filename=vyos_log_file, level=logging.DEBUG) def is_available(intfs: dict, intf_name: str) -> bool: - """ Check if interface name is already assigned - """ + """Check if interface name is already assigned""" if intf_name in list(intfs.values()): return False return True + def find_available(intfs: dict, prefix: str) -> str: - """ Find lowest indexed iterface name that is not assigned - """ - index_list = [int(x.replace(prefix, '')) for x in list(intfs.values()) if prefix in x] + """Find lowest indexed iterface name that is not assigned""" + index_list = [ + int(x.replace(prefix, '')) for x in list(intfs.values()) if prefix in x + ] index_list.sort() # find 'holes' in list, if any missing = sorted(set(range(index_list[0], index_list[-1])) - set(index_list)) @@ -62,21 +55,22 @@ def find_available(intfs: dict, prefix: str) -> str: return f'{prefix}{len(index_list)}' + def mod_ifname(ifname: str) -> str: - """ Check interface with names eX and return ifname on the next format eth{ifindex} - 2 - """ - if re.match("^e[0-9]+$", ifname): - intf = ifname.split("e") + """Check interface with names eX and return ifname on the next format eth{ifindex} - 2""" + if re.match('^e[0-9]+$', ifname): + intf = ifname.split('e') if intf[1]: if int(intf[1]) >= 2: - return "eth" + str(int(intf[1]) - 2) + return 'eth' + str(int(intf[1]) - 2) else: - return "eth" + str(intf[1]) + return 'eth' + str(intf[1]) return ifname + def get_biosdevname(ifname: str) -> str: - """ Use legacy vyatta-biosdevname to query for name + """Use legacy vyatta-biosdevname to query for name This is carried over for compatability only, and will likely be dropped going forward. @@ -95,11 +89,12 @@ def get_biosdevname(ifname: str) -> str: try: biosname = cmd(f'/sbin/biosdevname --policy all_ethN -i {ifname}') except Exception as e: - logging.error(f'biosdevname error: {e}') + logger.error(f'biosdevname error: {e}') biosname = '' return intf if biosname == '' else biosname + def leave_rescan_hint(intf_name: str, hwid: str): """Write interface information reported by udev @@ -112,18 +107,18 @@ def leave_rescan_hint(intf_name: str, hwid: str): except FileExistsError: pass except Exception as e: - logging.critical(f"Error creating rescan hint directory: {e}") + logger.critical(f'Error creating rescan hint directory: {e}') exit(1) try: with open(os.path.join(vyos_udev_dir, intf_name), 'w') as f: f.write(hwid) except OSError as e: - logging.critical(f"OSError {e}") + logger.critical(f'OSError {e}') + def get_configfile_interfaces() -> dict: - """Read existing interfaces from config file - """ + """Read existing interfaces from config file""" interfaces: dict = {} if not os.path.isfile(config_path): @@ -134,14 +129,14 @@ def get_configfile_interfaces() -> dict: with open(config_path) as f: config_file = f.read() except OSError as e: - logging.critical(f"OSError {e}") + logger.critical(f'OSError {e}') exit(1) try: config = ConfigTree(config_file) except Exception: try: - logging.debug(f"updating component version string syntax") + logger.debug('updating component version string syntax') # this will update the component version string syntax, # required for updates 1.2 --> 1.3/1.4 with tempfile.NamedTemporaryFile() as fp: @@ -157,7 +152,8 @@ def get_configfile_interfaces() -> dict: config = ConfigTree(config_file) except Exception as e: - logging.critical(f"ConfigTree error: {e}") + logger.critical(f'ConfigTree error: {e}') + exit(1) base = ['interfaces', 'ethernet'] if config.exists(base): @@ -165,11 +161,13 @@ def get_configfile_interfaces() -> dict: for intf in eth_intfs: path = base + [intf, 'hw-id'] if not config.exists(path): - logging.warning(f"no 'hw-id' entry for {intf}") + logger.warning(f"no 'hw-id' entry for {intf}") continue hwid = config.return_value(path) if hwid in list(interfaces): - logging.warning(f"multiple entries for {hwid}: {interfaces[hwid]}, {intf}") + logger.warning( + f'multiple entries for {hwid}: {interfaces[hwid]}, {intf}' + ) continue interfaces[hwid] = intf @@ -179,21 +177,23 @@ def get_configfile_interfaces() -> dict: for intf in wlan_intfs: path = base + [intf, 'hw-id'] if not config.exists(path): - logging.warning(f"no 'hw-id' entry for {intf}") + logger.warning(f"no 'hw-id' entry for {intf}") continue hwid = config.return_value(path) if hwid in list(interfaces): - logging.warning(f"multiple entries for {hwid}: {interfaces[hwid]}, {intf}") + logger.warning( + f'multiple entries for {hwid}: {interfaces[hwid]}, {intf}' + ) continue interfaces[hwid] = intf - logging.debug(f"config file entries: {interfaces}") + logger.debug(f'config file entries: {interfaces}') return interfaces + def add_assigned_interfaces(intfs: dict): - """Add interfaces found by previous invocation of udev rule - """ + """Add interfaces found by previous invocation of udev rule""" if not os.path.isdir(vyos_udev_dir): return @@ -203,55 +203,74 @@ def add_assigned_interfaces(intfs: dict): with open(path) as f: hwid = f.read().rstrip() except OSError as e: - logging.error(f"OSError {e}") + logger.error(f'OSError {e}') continue intfs[hwid] = intf + def on_boot_event(intf_name: str, hwid: str, predefined: str = '') -> str: - """Called on boot by vyos-router: 'coldplug' in vyatta_net_name - """ - logging.info(f"lookup {intf_name}, {hwid}") + """Called on boot by vyos-router: 'coldplug' in vyatta_net_name""" + logger.info(f'lookup {intf_name}, {hwid}') interfaces = get_configfile_interfaces() - logging.debug(f"config file interfaces are {interfaces}") + logger.debug(f'config file interfaces are {interfaces}') if hwid in list(interfaces): - logging.info(f"use mapping from config file: '{hwid}' -> '{interfaces[hwid]}'") + logger.info(f"use mapping from config file: '{hwid}' -> '{interfaces[hwid]}'") return interfaces[hwid] add_assigned_interfaces(interfaces) - logging.debug(f"adding assigned interfaces: {interfaces}") + logger.debug(f'adding assigned interfaces: {interfaces}') if predefined: newname = predefined - logging.info(f"predefined interface name for '{intf_name}' is '{newname}'") + logger.info(f"predefined interface name for '{intf_name}' is '{newname}'") else: newname = get_biosdevname(intf_name) - logging.info(f"biosdevname returned '{newname}' for '{intf_name}'") + logger.info(f"biosdevname returned '{newname}' for '{intf_name}'") if not is_available(interfaces, newname): prefix = re.sub(r'\d+$', '', newname) newname = find_available(interfaces, prefix) - logging.info(f"new name for '{intf_name}' is '{newname}'") + logger.info(f"new name for '{intf_name}' is '{newname}'") leave_rescan_hint(newname, hwid) return newname + def hotplug_event(): # Not yet implemented, since interface-rescan will only be run on boot. pass -if len(argv) > 3: - predef_name = argv[3] -else: - predef_name = '' - -lock.acquire() -if not boot_configuration_complete(): - res = on_boot_event(argv[1], argv[2], predefined=predef_name) - logging.debug(f"on boot, returned name is {res}") - print(res) -else: - logging.debug("boot configuration complete") -lock.release() + +if __name__ == '__main__': + # Set up logging to syslog + syslog_handler = logging.handlers.SysLogHandler(address='/dev/log') + formatter = logging.Formatter(f'{Path(__file__).name}: %(message)s') + syslog_handler.setFormatter(formatter) + + logger = logging.getLogger() + logger.addHandler(syslog_handler) + logger.setLevel(logging.DEBUG) + + logger.debug(f'Started with arguments: {argv}') + + if len(argv) > 3: + predef_name = argv[3] + else: + predef_name = '' + + lock = Lock('vyos_net_name') + # Wait 60 seconds for other running scripts to finish + lock.acquire(60) + + if not boot_configuration_complete(): + res = on_boot_event(argv[1], argv[2], predefined=predef_name) + logger.debug(f'on boot, returned name is {res}') + print(res) + else: + logger.debug('boot configuration complete') + + lock.release() + logger.debug('Finished') |