src/initscripts/system/rngd

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin $rc_base/init.d/rngd
   4 #
   5 # Description : Random Number Generator Daemon
   6 #
   7 # Authors     : Michael Tremer <michael.tremer@ipfire.org>
   8 #
   9 ########################################################################
  10
  11 . /etc/sysconfig/rc
  12 . ${rc_functions}
  13
  14 function has_rdrand() {
  15         grep -q "rdrand" /proc/cpuinfo
  16 }
  17
  18 function has_hwrng() {
  19         [ -e "/dev/hwrng" ]
  20 }
  21
  22 case "${1}" in
  23         start)
  24                 if ! has_hwrng && ! has_rdrand; then
  25                         boot_mesg "No Hardware Random Number Generator found..."
  26                         echo_warning
  27                         exit 0
  28                 fi
  29
  30                 boot_mesg "Starting Random Number Generator Daemon..."
  31
  32                 if pidofproc /usr/sbin/rngd &>/dev/null; then
  33                         # Is already running.
  34                         echo_ok
  35                 else
  36                         loadproc /usr/sbin/rngd --no-tpm=1
  37                 fi
  38                 ;;
  39
  40         stop)
  41                 boot_mesg "Stopping Random Number Generator Daemon..."
  42                 killproc -p /var/run/rngd.pid /usr/sbin/rngd
  43                 ;;
  44
  45         restart)
  46                 ${0} stop
  47                 sleep 1
  48                 ${0} start
  49                 ;;
  50
  51         status)
  52                 statusproc /usr/sbin/rngd
  53                 ;;
  54
  55         udev-event)
  56                 $0 restart &>/dev/null
  57                 ;;
  58
  59         *)
  60                 echo "Usage: ${0} {start|stop|restart|status}"
  61                 exit 1
  62                 ;;
  63 esac
  64
  65 # End $rc_base/init.d/rngd