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

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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 <philipp@redfish-solutions.com>
This commit is contained in:
Philip Prindeville
2017-02-02 21:56:35 -07:00
parent 3849b5b6d8
commit 901ef617c7
1 changed files with 1 additions and 1 deletions
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utils/rng-tools/files/rngd.init
+1 -1
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@@ -1,7 +1,7 @@
#!/bin/sh /etc/rc.common #!/bin/sh /etc/rc.common
# Copyright (C) 2011-2014 OpenWrt.org # Copyright (C) 2011-2014 OpenWrt.org
START=98 START=25
USE_PROCD=1 USE_PROCD=1
PROG=/sbin/rngd PROG=/sbin/rngd