From db8f03740af4d0d7005502ff46f9c1742f636e2a Mon Sep 17 00:00:00 2001
From: Jeffrey Hutzelman <jhutz@cmu.edu>
Date: Tue, 18 Jun 2013 22:40:49 -0400
Subject: [PATCH] hcrypto/rand-unix.c: Ignore write(2) result harder

unix_seed(), called by the add-seed-data op unix_add(), attempts to
write seed data to the random data device.  If this fails, the failure
is ignored, as it must be, since there is no way to inform the caller.

This change modifies the way in which the return value from write(2)
is ignored, to avoid compiler warnings when building on Ubuntu 12.10,
with gcc 4.7.2 and eglibc 2.15-0ubuntu20.1.
---
 lib/hcrypto/rand-unix.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/hcrypto/rand-unix.c b/lib/hcrypto/rand-unix.c
index c52155baa..e0299589c 100644
--- a/lib/hcrypto/rand-unix.c
+++ b/lib/hcrypto/rand-unix.c
@@ -82,7 +82,8 @@ unix_seed(const void *indata, int size)
     if (fd < 0)
 	return;
 
-    write(fd, indata, size);
+    if (write(fd, indata, size) != size)
+	; /* don't care */
     close(fd);
 
 }