| save-entropy.sh (144889) | save-entropy.sh (161683) |
|---|---|
| 1#!/bin/sh 2# | 1#!/bin/sh 2# |
| 3# Copyright (c) 2001-2005 Douglas Barton, DougB@FreeBSD.org | 3# Copyright (c) 2001-2006 Douglas Barton, DougB@FreeBSD.org |
| 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright --- 7 unchanged lines hidden (view full) --- 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26# | 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright --- 7 unchanged lines hidden (view full) --- 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26# |
| 27# $FreeBSD: head/libexec/save-entropy/save-entropy.sh 144889 2005-04-11 02:07:33Z dougb $ | 27# $FreeBSD: head/libexec/save-entropy/save-entropy.sh 161683 2006-08-28 06:41:50Z dougb $ |
| 28 29# This script is called by cron to store bits of randomness which are 30# then used to seed /dev/random on boot. 31 32# Originally developed by Doug Barton, DougB@FreeBSD.org 33 34PATH=/bin:/usr/bin 35 36# If there is a global system configuration file, suck it in. 37# 38if [ -r /etc/defaults/rc.conf ]; then 39 . /etc/defaults/rc.conf | 28 29# This script is called by cron to store bits of randomness which are 30# then used to seed /dev/random on boot. 31 32# Originally developed by Doug Barton, DougB@FreeBSD.org 33 34PATH=/bin:/usr/bin 35 36# If there is a global system configuration file, suck it in. 37# 38if [ -r /etc/defaults/rc.conf ]; then 39 . /etc/defaults/rc.conf |
| 40 source_rc_confs | 40 source_rc_confs 2>/dev/null |
| 41elif [ -r /etc/rc.conf ]; then | 41elif [ -r /etc/rc.conf ]; then |
| 42 . /etc/rc.conf | 42 . /etc/rc.conf 2>/dev/null |
| 43fi 44 45case ${entropy_dir} in 46[Nn][Oo]) 47 exit 0 48 ;; 49*) 50 entropy_dir=${entropy_dir:-/var/db/entropy} --- 10 unchanged lines hidden (view full) --- 61exist, and cannot be created. Therefore no entropy can be saved. ; 62 exit 1;} 63 /usr/sbin/chown operator:operator "${entropy_dir}" 64 chmod 0700 "${entropy_dir}" 65fi 66 67umask 377 68 | 43fi 44 45case ${entropy_dir} in 46[Nn][Oo]) 47 exit 0 48 ;; 49*) 50 entropy_dir=${entropy_dir:-/var/db/entropy} --- 10 unchanged lines hidden (view full) --- 61exist, and cannot be created. Therefore no entropy can be saved. ; 62 exit 1;} 63 /usr/sbin/chown operator:operator "${entropy_dir}" 64 chmod 0700 "${entropy_dir}" 65fi 66 67umask 377 68 |
| 69for file_num in `jot ${entropy_save_num} ${entropy_save_num} 1`; do | 69esn_m1=$(( ${entropy_save_num} - 1 )) 70for file_num in `jot $esn_m1 $esn_m1 1`; do |
| 70 if [ -e "${entropy_dir}/saved-entropy.${file_num}" ]; then 71 if [ -f "${entropy_dir}/saved-entropy.${file_num}" ]; then | 71 if [ -e "${entropy_dir}/saved-entropy.${file_num}" ]; then 72 if [ -f "${entropy_dir}/saved-entropy.${file_num}" ]; then |
| 72 new_num=$(($file_num + 1)) 73 if [ "${new_num}" -gt "${entropy_save_num}" ]; then 74 rm -f "${entropy_dir}/saved-entropy.${file_num}" 75 else 76 mv "${entropy_dir}/saved-entropy.${file_num}" \ 77 "${entropy_dir}/saved-entropy.${new_num}" | 73 new_file=saved-entropy.$(( $file_num + 1 )) 74 if [ -e "${entropy_dir}/${new_file}" ]; then 75 unlink ${entropy_dir}/${new_file} |
| 78 fi | 76 fi |
| 77 mv "${entropy_dir}/saved-entropy.${file_num}" \ 78 "${entropy_dir}/${new_file}" |
|
| 79 else 80 logger -is -t "$0" \ 81"${entropy_dir}/saved-entropy.${file_num} is not a regular file, and therefore \ 82it will not be rotated. Entropy file harvesting is aborted." 83 exit 1 84 fi 85 fi 86done 87 88dd if=/dev/random of="${entropy_dir}/saved-entropy.1" \ 89 bs="$entropy_save_sz" count=1 2> /dev/null 90 91exit 0 92 | 79 else 80 logger -is -t "$0" \ 81"${entropy_dir}/saved-entropy.${file_num} is not a regular file, and therefore \ 82it will not be rotated. Entropy file harvesting is aborted." 83 exit 1 84 fi 85 fi 86done 87 88dd if=/dev/random of="${entropy_dir}/saved-entropy.1" \ 89 bs="$entropy_save_sz" count=1 2> /dev/null 90 91exit 0 92 |