+#!/usr/bin/python2
+
# Copyright (c) 2003 Intel Corporation
# All rights reserved.
-
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following
-# disclaimer in the documentation and/or other materials provided
-# with the distribution.
-
-# * Neither the name of the Intel Corporation nor the names of its
-# contributors may be used to endorse or promote products derived
-# from this software without specific prior written permission.
-
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR
-# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF
-# YOUR JURISDICTION. It is licensee's responsibility to comply with any
-# export regulations applicable in licensee's jurisdiction. Under
-# CURRENT (May 2000) U.S. export regulations this software is eligible
-# for export from the U.S. and can be downloaded by or otherwise
-# exported or reexported worldwide EXCEPT to U.S. embargoed destinations
-# which include Cuba, Iraq, Libya, North Korea, Iran, Syria, Sudan,
-# Afghanistan and any other country to which the U.S. has embargoed
-# goods and services.
-
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+# expected /proc/partitions format
import os, sys, shutil
import popen2
+import socket
+import fcntl
+import string
+import exceptions
from Exceptions import *
return 1
+
+
+# from: http://forums.devshed.com/archive/t-51149/
+# Ethernet-card-address-Through-Python-or-C
+
+def hexy(n):
+ return "%02x" % (ord(n))
+
+def get_mac_from_interface(ifname):
+ """
+ given a device name, like eth0, return its mac_address.
+ return None if the device doesn't exist.
+ """
+
+ SIOCGIFHWADDR = 0x8927 # magic number
+
+ s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
+ ifname = string.strip(ifname)
+ ifr = ifname + '\0'*(32-len(ifname))
+
+ try:
+ r= fcntl.ioctl(s.fileno(),SIOCGIFHWADDR,ifr)
+ addr = map(hexy,r[18:24])
+ ret = (':'.join(map(str, addr)))
+ except IOError, e:
+ ret = None
+
+ return ret
+