src/initscripts/system/random

   1 #!/bin/sh
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007-2022  IPFire Team  <info@ipfire.org>                     #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 . /etc/sysconfig/rc
  23 . $rc_functions
  24
  25 if [ -e /proc/sys/kernel/random/poolsize ]; then
  26         poolsize=$(</proc/sys/kernel/random/poolsize);
  27         poolsize=$(expr $poolsize / 8 );
  28 else
  29         poolsize=512;
  30 fi
  31
  32 case "$1" in
  33         start)
  34
  35                 #CRNG init need 128bit so wait until there is more)
  36                 avail=$(</proc/sys/kernel/random/entropy_avail)
  37                 while [ $avail -lt 130 ]; do
  38                         avail=$(</proc/sys/kernel/random/entropy_avail)
  39                         boot_mesg -n "\rWait for entropy: $avail/130   "
  40                         # Generate some disc access to gather entropy
  41                         echo  avail > /var/tmp/random-tmpfile
  42                         sync
  43                         rm -f /var/tmp/random-tmpfile
  44                 done;
  45                 ;;
  46
  47         *)
  48                 echo "Usage: $0 {start}"
  49                 exit 1
  50                 ;;
  51 esac