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-rw-r--r--sunrpc/clnt_unix.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sunrpc/clnt_unix.c b/sunrpc/clnt_unix.c
index 64b9ca9731..ad12d5fa89 100644
--- a/sunrpc/clnt_unix.c
+++ b/sunrpc/clnt_unix.c
@@ -458,7 +458,10 @@ __msgread (int sock, void *buf, size_t cnt)
   msg.msg_controllen = sizeof(struct cmessage);
   msg.msg_flags = 0;
 
-  setsockopt (sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on));
+#ifdef SO_PASSCRED
+  if (setsockopt (sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on)))
+    return -1;
+#endif
 
   return recvmsg (sock, &msg, 0);
 }