From: Christian Grothoff <christian@grothoff.org>
Date: Fri, 20 Jul 2012 11:06:57 +0000 (+0000)
Subject: -trying to fix perm problem despite SUID
X-Git-Tag: initial-import-from-subversion-38251~12412
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5a92a881f4eaed19a7165cbf162d305aa710ba35;p=oweals%2Fgnunet.git

-trying to fix perm problem despite SUID
---

diff --git a/src/transport/gnunet-helper-transport-wlan.c b/src/transport/gnunet-helper-transport-wlan.c
index 363925cad..cc3891b02 100644
--- a/src/transport/gnunet-helper-transport-wlan.c
+++ b/src/transport/gnunet-helper-transport-wlan.c
@@ -1868,6 +1868,11 @@ main (int argc, char *argv[])
   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 */