bugfix: EINTRs caught

src/netns/environ.py

 # vim:ts=4:sw=4:et:ai:sts=4
 
-import os, os.path, socket, subprocess, sys, syslog
+import errno, os, os.path, socket, subprocess, sys, syslog
 from syslog import LOG_ERR, LOG_WARNING, LOG_NOTICE, LOG_INFO, LOG_DEBUG
 
 __all__ = ["ip_path", "tc_path", "brctl_path", "sysctl_path", "hz"]
@@ -133,7 +133,16 @@ def logger(priority, message):
         return
     if priority > _log_level:
         return
+
+    while True:
+        try:
             _log_stream.write("[%d] %s\n" % (os.getpid(), message.rstrip()))
+        except OSError, e: # pragma: no cover
+            if e.errno == errno.EINTR:
+                continue
+            else:
+                raise
+        break
     _log_stream.flush()
 
 def error(message):

src/netns/node.py

 #!/usr/bin/env python
 # vim:ts=4:sw=4:et:ai:sts=4
 
-import os, socket, sys, traceback, unshare, weakref
+import errno, os, socket, sys, traceback, unshare, weakref
 from netns.environ import *
 import netns.interface, netns.protocol, netns.subprocess_
 
@@ -61,7 +61,17 @@ class Node(object):
 
         if self._slave:
             self._slave.shutdown()
+
+        while True:
+            try:
                 exitcode = os.waitpid(self._pid, 0)[1]
+            except OSError, e: # pragma: no cover
+                if e.errno == errno.EINTR:
+                    continue
+                else:
+                    raise
+            break
+
         if exitcode != 0:
             error("Node(0x%x) process %d exited with non-zero status: %d" %
                     (id(self), self._pid, exitcode))

src/netns/protocol.py

@@ -158,7 +158,9 @@ class Server(object):
                 line = self._rfd.readline()
             except IOError, e:
                 line = None
-                if e.errno != errno.EINTR:
+                if e.errno == errno.EINTR:
+                    continue
+                else:
                     raise
             break
         if not line:
@@ -674,7 +676,7 @@ class Client(object):
         if code / 100 == 4:
             return None
         else:
-            raise "Error on command: %d %s" % (code, text)
+            raise RuntimeError("Error on command: %d %s" % (code, text))
 
     def wait(self, pid):
         """Equivalent to Popen.wait(). Waits for the process to finish and