From 7b48d25527c372a6a5017897c7617a05d5f1e68e Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@zip.com.au>
Date: Wed, 16 Feb 2005 13:20:07 +1100
Subject: [PATCH]  - (dtucker) [ssh-rand-helper.c] Provide seed_rng since it
 may be called    via mkstemp in some configurations.  ok djm@

---
 ChangeLog         |  4 +++-
 ssh-rand-helper.c | 14 +++++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 9c14c6aea..2716b7de6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,8 @@
 20050216
  - (djm) write seed to temporary file and atomically rename into place; 
    ok dtucker@
+ - (dtucker) [ssh-rand-helper.c] Provide seed_rng since it may be called
+   via mkstemp in some configurations.  ok djm@
 
 20050215
  - (dtucker) [config.sh.in] Collect oslevel -r too.
@@ -2135,4 +2137,4 @@
    - (djm) Trim deprecated options from INSTALL. Mention UsePAM
    - (djm) Fix quote handling in sftp; Patch from admorten AT umich.edu
 
-$Id: ChangeLog,v 1.3654 2005/02/16 02:02:45 djm Exp $
+$Id: ChangeLog,v 1.3655 2005/02/16 02:20:07 dtucker Exp $
diff --git a/ssh-rand-helper.c b/ssh-rand-helper.c
index 6412d44e2..4da62a724 100644
--- a/ssh-rand-helper.c
+++ b/ssh-rand-helper.c
@@ -39,7 +39,7 @@
 #include "pathnames.h"
 #include "log.h"
 
-RCSID("$Id: ssh-rand-helper.c,v 1.21 2005/02/16 02:02:45 djm Exp $");
+RCSID("$Id: ssh-rand-helper.c,v 1.22 2005/02/16 02:20:07 dtucker Exp $");
 
 /* Number of bytes we write out */
 #define OUTPUT_SEED_SIZE	48
@@ -888,3 +888,15 @@ main(int argc, char **argv)
 
 	return ret == bytes ? 0 : 1;
 }
+
+/*
+ * We may attempt to re-seed during mkstemp if we are using the one in the
+ * compat library (via mkstemp -> arc4random -> seed_rng) so we need
+ * our own seed_rng().  We must also check that we have enough entropy.
+ */
+void
+seed_rng(void)
+{
+	if (!RAND_status())
+		fatal("Not enough entropy in RNG");
+}