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81 lines
1.6 KiB
Bash
81 lines
1.6 KiB
Bash
#!/bin/sh
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#
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# $FreeBSD$
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#
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# PROVIDE: initrandom
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# REQUIRE: initdiskless
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# BEFORE: disks
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# KEYWORD: FreeBSD nojail
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. /etc/rc.subr
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name="initrandom"
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start_cmd="initrandom_start"
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stop_cmd=":"
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feed_dev_random()
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{
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if [ -f "${1}" -a -r "${1}" -a -s "${1}" ]; then
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cat "${1}" | dd of=/dev/random bs=8k 2>/dev/null
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fi
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}
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initrandom_start()
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{
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soft_random_generator=`sysctl kern.random 2>/dev/null`
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echo -n 'Entropy harvesting:'
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if [ \! -z "${soft_random_generator}" ] ; then
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if checkyesno harvest_interrupt; then
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if [ -w /dev/random ]; then
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${SYSCTL_W} kern.random.sys.harvest.interrupt=1 >/dev/null
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echo -n ' interrupts'
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fi
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fi
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if checkyesno harvest_ethernet; then
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if [ -w /dev/random ]; then
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${SYSCTL_W} kern.random.sys.harvest.ethernet=1 >/dev/null
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echo -n ' ethernet'
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fi
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fi
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if checkyesno harvest_p_to_p; then
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if [ -w /dev/random ]; then
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${SYSCTL_W} kern.random.sys.harvest.point_to_point=1 >/dev/null
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echo -n ' point_to_point'
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fi
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fi
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# XXX temporary until we can improve the entropy
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# harvesting rate.
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# Entropy below is not great, but better than nothing.
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# This unblocks the generator at startup
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( ps -fauxww; sysctl -a; date; df -ib; dmesg; ps -fauxww; ) \
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| dd of=/dev/random bs=8k 2>/dev/null
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cat /bin/ls | dd of=/dev/random bs=8k 2>/dev/null
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# First pass at reseeding /dev/random.
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#
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case ${entropy_file} in
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[Nn][Oo] | '')
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;;
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*)
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if [ -w /dev/random ]; then
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feed_dev_random "${entropy_file}"
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fi
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;;
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esac
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echo -n ' kickstart'
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fi
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echo '.'
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}
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load_rc_config random
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run_rc_command "$1"
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