/usr/lib/python3/dist-packages/curtin/udev.py is in python3-curtin 0.1.0~bzr365-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | # Copyright (C) 2015 Canonical Ltd.
#
# Author: Ryan Harper <ryan.harper@canonical.com>
#
# Curtin is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# Curtin 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 Affero General Public License for
# more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Curtin. If not, see <http://www.gnu.org/licenses/>.
def compose_udev_equality(key, value):
"""Return a udev comparison clause, like `ACTION=="add"`."""
assert key == key.upper()
return '%s=="%s"' % (key, value)
def compose_udev_attr_equality(attribute, value):
"""Return a udev attribute comparison clause, like `ATTR{type}=="1"`."""
assert attribute == attribute.lower()
return 'ATTR{%s}=="%s"' % (attribute, value)
def compose_udev_setting(key, value):
"""Return a udev assignment clause, like `NAME="eth0"`."""
assert key == key.upper()
return '%s="%s"' % (key, value)
def generate_udev_rule(interface, mac):
"""Return a udev rule to set the name of network interface with `mac`.
The rule ends up as a single line looking something like:
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}="ff:ee:dd:cc:bb:aa", NAME="eth0"
"""
rule = ', '.join([
compose_udev_equality('SUBSYSTEM', 'net'),
compose_udev_equality('ACTION', 'add'),
compose_udev_equality('DRIVERS', '?*'),
compose_udev_attr_equality('address', mac),
compose_udev_setting('NAME', interface),
])
return '%s\n' % rule
# vi: ts=4 expandtab syntax=python
|