3 # $FreeBSD: src/etc/rc.d/random,v 1.3 2003/04/18 17:55:05 mtm Exp $
4 # $DragonFly: src/etc/rc.d/random,v 1.4 2006/07/10 22:19:14 dillon Exp $
8 # REQUIRE: diskless mountcritlocal initrandom
15 start_cmd="random_start"
16 stop_cmd="random_stop"
20 if [ -f "${1}" -a -r "${1}" -a -s "${1}" ]; then
21 sysctl kern.seedenable=1
22 cat "${1}" | dd of=/dev/random bs=8k 2>/dev/null
23 sysctl kern.seedenable=1
29 # Reseed /dev/random with previously stored entropy.
30 case ${entropy_dir} in
34 entropy_dir=${entropy_dir:-/var/db/entropy}
35 if [ -d "${entropy_dir}" ]; then
36 if [ -w /dev/random ]; then
37 for seedfile in ${entropy_dir}/*; do
38 feed_dev_random "${seedfile}"
45 case ${entropy_file} in
49 if [ -w /dev/random ]; then
50 feed_dev_random "${entropy_file}"
58 # Write some entropy so when the machine reebots /dev/random
61 case ${entropy_file} in
65 echo -n 'Writing entropy file:'
69 if touch ${entropy_file}; then
70 entropy_file_confirmed="${entropy_file}"
72 # Try this as a reasonable alternative for read-only
73 # roots, diskless workstations, etc.
75 if touch /var/db/entropy; then
76 entropy_file_confirmed=/var/db/entropy
79 case ${entropy_file_confirmed} in
81 err 1 '${entropy_file_confirmed}:' \
82 ' entropy file write failed.'
85 dd if=/dev/random of=${entropy_file_confirmed} \
86 bs=4096 count=1 2> /dev/null