From: Philip Prindeville <redacted>
Date: Fri, 3 Feb 2017 04:56:35 +0000 (-0700)
Subject: rng-tools: start rngd early enough to actually be useful
X-Git-Url: http://git.99rst.org/?a=commitdiff_plain;h=901ef617c7c913e94cfa88a5427d4a5511129fc8;p=openwrt-packages.git

rng-tools: start rngd early enough to actually be useful

lighttpd starts at priority 50, but promptly calls getrandom() on
initialization (li_rand_reseed() and li_rand_device_bytes() from
server_init()). If /dev/urandom (which getrandom() uses by default)
doesn't have sufficient entropy, this will block.

Since Openwrt runs the startup scripts serially, this can block
initialization indefinitely.  I've seen 15-20 minutes typically.

Seeding the pool early on can quickly built sufficient entropy to
complete booting without blocking.

Signed-off-by: Philip Prindeville <redacted>
---

diff --git a/utils/rng-tools/files/rngd.init b/utils/rng-tools/files/rngd.init
index c9cead3bc..bb560c8b1 100644
--- a/utils/rng-tools/files/rngd.init
+++ b/utils/rng-tools/files/rngd.init
@@ -1,7 +1,7 @@
 #!/bin/sh /etc/rc.common
 # Copyright (C) 2011-2014 OpenWrt.org
 
-START=98
+START=25
 
 USE_PROCD=1
 PROG=/sbin/rngd