[GNUnet-SVN] r22786 - gnunet/src/transport

[gnunet]

Author: grothoff
Date: 2012-07-20 13:06:57 +0200 (Fri, 20 Jul 2012)
New Revision: 22786

Modified:
   gnunet/src/transport/gnunet-helper-transport-wlan.c
Log:
-trying to fix perm problem despite SUID

Modified: gnunet/src/transport/gnunet-helper-transport-wlan.c
===================================================================
--- gnunet/src/transport/gnunet-helper-transport-wlan.c 2012-07-20 09:57:13 UTC 
(rev 22785)
+++ gnunet/src/transport/gnunet-helper-transport-wlan.c 2012-07-20 11:06:57 UTC 
(rev 22786)
@@ -1868,6 +1868,11 @@
   struct MessageStreamTokenizer *stdin_mst;
   int raw_eno;
 
+  /* make use of SGID capabilities on POSIX */
+  /* FIXME: this might need a port on systems without 'getresgid' */
+  if (-1 ==  setreuid (0, 0))
+    fprintf (stderr, "setreuid failed: %s\n", strerror (errno));
+
   memset (&dev, 0, sizeof (dev));
   dev.fd_raw = socket (PF_PACKET, SOCK_RAW, htons (ETH_P_ALL));
   raw_eno = errno; /* remember for later */