/usr/bin/lxc-device is in lxc 1:1.0.6-6+deb8u6.
This file is owned by root:root, with mode 0o755.
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 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | #!/usr/bin/python3
#
# lxc-device: Add devices to a running container
#
# This python implementation is based on the work done in the original
# shell implementation done by Serge Hallyn in Ubuntu (and other contributors)
#
# (C) Copyright Canonical Ltd. 2012
#
# Authors:
# Stéphane Graber <stgraber@ubuntu.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
import argparse
import gettext
import lxc
import os
_ = gettext.gettext
gettext.textdomain("lxc-device")
# Begin parsing the command line
parser = argparse.ArgumentParser(description=_("LXC: Manage devices"),
formatter_class=argparse.RawTextHelpFormatter)
# Global arguments
parser.add_argument("-n", dest="container", metavar="CONTAINER",
help=_("Name of the container to add the device to"),
required=True)
parser.add_argument("-P", "--lxcpath", dest="lxcpath", metavar="PATH",
help=_("Use specified container path"), default=None)
parser.add_argument("--version", action="version", version=lxc.version)
# Commands
subparsers = parser.add_subparsers()
subparser_add = subparsers.add_parser('add', help=_('Add a device'))
subparser_add.set_defaults(action="add")
subparser_add.add_argument(dest="device", metavar="DEVICE",
help=_("Add a device "
"(path to a node or interface name)"))
subparser_add.add_argument(dest="name", metavar="NAME", nargs="?",
help=_("Use an alternative path or name "
"in the container"))
args = parser.parse_args()
# Some basic checks
## Check for valid action
if not hasattr(args, "action"):
parser.error(_("You must specify an action."))
## Don't rename if no alternative name
if not args.name:
args.name = args.device
## Check that the container is ready
container = lxc.Container(args.container, args.lxcpath)
## Check that we have control over the container
if not container.controllable:
parser.error("Insufficent privileges to control: %s" % container.name)
## Check that the container is running
if not container.running:
parser.error("The container must be running.")
# Do the work
if args.action == "add":
if os.path.exists("/sys/class/net/%s/" % args.device):
ret = container.add_device_net(args.device, args.name)
else:
ret = container.add_device_node(args.device, args.name)
if ret:
print("Added '%s' to '%s' as '%s'." %
(args.device, container.name, args.name))
else:
print("Failed to add '%s' to '%s' as '%s'." %
(args.device, container.name, args.name))
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