etc/rc.d/initrandom

   1 #!/bin/sh
   2 #
   3 # $FreeBSD: src/etc/rc.d/initrandom,v 1.1 2002/06/13 22:14:36 gordon Exp $
   4 # $DragonFly: src/etc/rc.d/initrandom,v 1.1 2003/07/24 06:35:37 dillon Exp $
   5 #
   6
   7 # PROVIDE: initrandom
   8 # REQUIRE: initdiskless
   9 # BEFORE: disks
  10 # KEYWORD: DragonFly FreeBSD
  11
  12 . /etc/rc.subr
  13
  14 name="initrandom"
  15 start_cmd="initrandom_start"
  16 stop_cmd=":"
  17
  18 feed_dev_random()
  19 {
  20         if [ -f "${1}" -a -r "${1}" -a -s "${1}" ]; then
  21                 cat "${1}" | dd of=/dev/random bs=8k 2>/dev/null
  22         fi
  23 }
  24
  25 initrandom_start()
  26 {
  27         echo -n 'Entropy harvesting:'
  28
  29         if checkyesno harvest_interrupt; then
  30                 if [ -w /dev/random ]; then
  31                         ${SYSCTL_W} kern.random.sys.harvest.interrupt=1 >/dev/null
  32                         echo -n ' interrupts'
  33                 fi
  34         fi
  35
  36         if checkyesno harvest_ethernet; then
  37                 if [ -w /dev/random ]; then
  38                         ${SYSCTL_W} kern.random.sys.harvest.ethernet=1 >/dev/null
  39                         echo -n ' ethernet'
  40                 fi
  41         fi
  42
  43         if checkyesno harvest_p_to_p; then
  44                 if [ -w /dev/random ]; then
  45                 ${SYSCTL_W} kern.random.sys.harvest.point_to_point=1 >/dev/null
  46                         echo -n ' point_to_point'
  47                 fi
  48         fi
  49
  50         echo '.'
  51
  52         # First pass at reseeding /dev/random.
  53         #
  54         case ${entropy_file} in
  55         [Nn][Oo] | '')
  56                 ;;
  57         *)
  58                 if [ -w /dev/random ]; then
  59                         feed_dev_random "${entropy_file}"
  60                 fi
  61                 ;;
  62         esac
  63
  64         # XXX temporary until we can get the entropy
  65         # harvesting rate up
  66         # Entropy below is not great,
  67         # but better than nothing.
  68         ( ps -fauxww; sysctl -a; date; df -ib; dmesg; ps -fauxww; ) \
  69             | dd of=/dev/random bs=8k 2>/dev/null
  70         cat /bin/ls | dd of=/dev/random bs=8k 2>/dev/null
  71 }
  72
  73 load_rc_config random
  74 run_rc_command "$1"