commit 8d42697f9ee2201569e7bc45246e01da9db02ddb
author Erik Kline <ek@google.com> Wed Jun 24 15:06:07 2015 +0900
committer Erik Kline <ek@google.com> Wed Jun 24 15:42:06 2015 +0900
tree 1cfaba362c9cb86fa1e266a65989b58eb62ccdbb
parent 4b15306eb56eb38c4a4320d86da6ee27ac9c04ed

Switch to fchown() for changing the UID of sockets.

All tests PASS on:
    - android/android-3.4
    - android/android-3.10

Also, multinetwork_test.py PASSes
    - android/android-3.18

Bug: 20733156
Bug: 21832279
Change-Id: I1738ca014e58af35f841e31faad649d485b370c6

net/test/multinetwork_base.py

diff --git a/net/test/multinetwork_base.py b/net/test/multinetwork_base.py
index 8940258..5952d56 100644
--- a/net/test/multinetwork_base.py
+++ b/net/test/multinetwork_base.py
@@ -430,13 +430,12 @@
       raise ValueError("Unknown interface selection mode %s" % mode)
 
   def BuildSocket(self, version, constructor, netid, routing_mode):
-    uid = self.UidForNetid(netid) if routing_mode == "uid" else None
-    with net_test.RunAsUid(uid):
-      family = self.GetProtocolFamily(version)
-      s = constructor(family)
+    s = constructor(self.GetProtocolFamily(version))
 
     if routing_mode not in [None, "uid"]:
       self.SelectInterface(s, netid, routing_mode)
+    elif routing_mode == "uid":
+      os.fchown(s.fileno(), self.UidForNetid(netid), -1)
 
     return s