46 lines
935 B
Plaintext
46 lines
935 B
Plaintext
#!@PREFIX@/sbin/runscript
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# Copyright 2007-2009 Roy Marples <roy@marples.name>
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# All rights reserved. Released under the 2-clause BSD license.
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: ${urandom_seed:=${URANDOM_SEED:-/var/run/random-seed}}
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description="Initializes the random number generator."
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depend()
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{
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need localmount
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keyword nojail noprefix
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}
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save_seed()
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{
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local psz=1
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if [ -e /proc/sys/kernel/random/poolsize ]; then
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psz=$(($(cat /proc/sys/kernel/random/poolsize) / 4096))
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fi
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( # sub shell to prevent umask pollution
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umask 077
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dd if=/dev/urandom of="$urandom_seed" count=${psz} 2>/dev/null
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)
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}
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start()
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{
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[ -c /dev/urandom ] || return
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if [ -f "$urandom_seed" ]; then
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ebegin "Initializing random number generator"
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cat "$urandom_seed" > /dev/urandom
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eend $? "Error initializing random number generator"
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fi
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rm -f "$urandom_seed" && save_seed
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return 0
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}
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stop()
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{
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ebegin "Saving random seed"
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save_seed
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eend $? "Failed to save random seed"
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}
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