X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=tools.py;h=94ba2d12eb2cca27d3df74dd2a5887706f05e6d7;hb=3224c1906c82596a86ae734181488ed14a0f0976;hp=bc4b49e84fd21896b1659e9a76041510e0fa16ca;hpb=b4a5dd8ec367eca5f04b7cf4b8daa31458e6da6c;p=nodemanager.git

diff --git a/tools.py b/tools.py
index bc4b49e..94ba2d1 100644
--- a/tools.py
+++ b/tools.py
@@ -1,3 +1,6 @@
+# $Id$
+# $URL$
+
 """A few things that didn't seem to fit anywhere else."""
 
 import cPickle
@@ -8,12 +11,32 @@ import tempfile
 import threading
 import fcntl
 import commands
-
 import logger
 
-
 PID_FILE = '/var/run/nm.pid'
 
+def get_default_if():
+    interface = get_if_from_hwaddr(get_hwaddr_from_plnode())
+    if not interface: interface = "eth0"
+    return interface
+
+def get_hwaddr_from_plnode():
+    try:
+        for line in open("/usr/boot/plnode.txt", 'r').readlines():
+            if line.startswith("NET_DEVICE"):
+                return line.split("=")[1].strip().strip('"')
+    except:
+        pass
+    return None
+
+def get_if_from_hwaddr(hwaddr):
+    import sioc
+    devs = sioc.gifconf()
+    for dev in devs:
+        dev_hwaddr = sioc.gifhwaddr(dev)
+        if dev_hwaddr == hwaddr: return dev
+    return None
+
 def as_daemon_thread(run):
     """Call function <run> with no arguments in its own thread."""
     thr = threading.Thread(target=run)