X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=tools.py;h=267ec3149066ab06d47b9ba14d2a89a0c2f4af16;hb=74a8cfb9d2eac39ae02e5323e1fb5b1d33297981;hp=bc4b49e84fd21896b1659e9a76041510e0fa16ca;hpb=b4a5dd8ec367eca5f04b7cf4b8daa31458e6da6c;p=nodemanager.git

diff --git a/tools.py b/tools.py
index bc4b49e..267ec31 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)
@@ -58,7 +81,7 @@ def fork_as(su, function, *args):
         except:
             os.seteuid(os.getuid())  # undo su so we can write the log file
             os.setegid(os.getgid())
-            logger.log_exc()
+            logger.log_exc("tools: fork_as")
         os._exit(0)
     else: os.waitpid(child_pid, 0)
 
@@ -105,18 +128,6 @@ def node_id():
             _node_id=""
     return _node_id
 
-# get slicefamily from /etc/planetlab/slicefamily and cache it
-# http://svn.planet-lab.org/wiki/SliceFamily
-_slicefamily=None
-def slicefamily():
-    global _slicefamily
-    if _slicefamily is None:
-        try:
-            _slicefamily=file("/etc/planetlab/slicefamily").read().strip()
-        except:
-            _slicefamily=""
-    return _slicefamily
-
 _root_context_arch=None
 def root_context_arch():
     global _root_context_arch
@@ -127,7 +138,7 @@ def root_context_arch():
 
 class NMLock:
     def __init__(self, file):
-        logger.log("Lock %s initialized." % file, 2)
+        logger.log("tools: Lock %s initialized." % file, 2)
         self.fd = os.open(file, os.O_RDWR|os.O_CREAT, 0600)
         flags = fcntl.fcntl(self.fd, fcntl.F_GETFD)
         flags |= fcntl.FD_CLOEXEC
@@ -135,8 +146,8 @@ class NMLock:
     def __del__(self):
         os.close(self.fd)
     def acquire(self):
-        logger.log("Lock acquired.", 2)
+        logger.log("tools: Lock acquired.", 2)
         fcntl.lockf(self.fd, fcntl.LOCK_SH)
     def release(self):
-        logger.log("Lock released.", 2)
+        logger.log("tools: Lock released.", 2)
         fcntl.lockf(self.fd, fcntl.LOCK_UN)