kernel - fix bug in objcache_destroy()
[dragonfly.git] / etc / rc.d / random
blob28b05dcdd3e4c9eb7f5437bc56ca0b4a3e94c720
1 #!/bin/sh
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 $
7 # PROVIDE: random
8 # REQUIRE: diskless mountcritlocal initrandom
9 # BEFORE: netif
10 # KEYWORD: shutdown
12 . /etc/rc.subr
14 name="random"
15 start_cmd="random_start"
16 stop_cmd="random_stop"
18 feed_dev_random()
20 if [ -f "${1}" -a -r "${1}" -a -s "${1}" ]; then
21 sysctl kern.seedenable=1 >/dev/null
22 cat "${1}" | dd of=/dev/random bs=8k 2>/dev/null
23 sysctl kern.seedenable=0 >/dev/null
27 random_start()
29 # Reseed /dev/random with previously stored entropy.
30 case ${entropy_dir} in
31 [Nn][Oo])
34 entropy_dir=${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}"
39 done
43 esac
45 case ${entropy_file} in
46 [Nn][Oo] | '')
49 if [ -w /dev/random ]; then
50 feed_dev_random "${entropy_file}"
53 esac
56 random_stop()
58 # Write some entropy so when the machine reboots /dev/random
59 # can be reseeded
61 case ${entropy_file} in
62 [Nn][Oo] | '')
65 echo -n 'Writing entropy file:'
66 rm -f ${entropy_file}
67 oumask=`umask`
68 umask 077
69 if touch ${entropy_file}; then
70 entropy_file_confirmed="${entropy_file}"
71 else
72 # Try this as a reasonable alternative for read-only
73 # roots, diskless workstations, etc.
74 rm -f /var/db/entropy
75 if touch /var/db/entropy; then
76 entropy_file_confirmed=/var/db/entropy
79 case ${entropy_file_confirmed} in
80 '')
81 err 1 '${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
87 echo '.'
89 esac
90 umask ${oumask}
92 esac
95 load_rc_config $name
96 run_rc_command "$1"