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netops	-	Open
__pycache__	-	Open
activators.py	11.72 MB	View DL Edit
bsd.py	8.46 MB	View DL Edit
cmdline.py	9.13 MB	View DL Edit
dhcp.py	35.96 MB	View DL Edit
eni.py	20.88 MB	View DL Edit
ephemeral.py	21.5 MB	View DL Edit
freebsd.py	3.69 MB	View DL Edit
netbsd.py	1.41 MB	View DL Edit
netplan.py	20.69 MB	View DL Edit
networkd.py	12.75 MB	View DL Edit
network_manager.py	24.66 MB	View DL Edit
network_state.py	35.6 MB	View DL Edit
openbsd.py	2.48 MB	View DL Edit
renderer.py	1.64 MB	View DL Edit
renderers.py	1.78 MB	View DL Edit
sysconfig.py	44.75 MB	View DL Edit
udev.py	1.39 MB	View DL Edit
__init__.py	41.92 MB	View DL Edit

Edit file: /usr/lib/python3.9/site-packages/cloudinit/net/udev.py

# Copyright (C) 2015 Canonical Ltd.
#
# Author: Ryan Harper <ryan.harper@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.

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, driver=None):
    """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"
    """
    if not driver:
        driver = "?*"

rule = ", ".join(
        [
            compose_udev_equality("SUBSYSTEM", "net"),
            compose_udev_equality("ACTION", "add"),
            compose_udev_equality("DRIVERS", driver),
            compose_udev_attr_equality("address", mac),
            compose_udev_setting("NAME", interface),
        ]
    )
    return "%s\n" % rule

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