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53 lines
1.3 KiB
Text
53 lines
1.3 KiB
Text
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#!/bin/openrc-run
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# Copyright (c) 2007-2015 The OpenRC Authors.
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# See the Authors file at the top-level directory of this distribution and
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# https://github.com/OpenRC/openrc/blob/master/AUTHORS
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#
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# This file is part of OpenRC. It is subject to the license terms in
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# the LICENSE file found in the top-level directory of this
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# distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
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# This file may not be copied, modified, propagated, or distributed
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# except according to the terms contained in the LICENSE file.
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: ${urandom_seed:=${URANDOM_SEED:-/var/lib/misc/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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after clock
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keyword -docker -jail -lxc -openvz -prefix -systemd-nspawn
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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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