Gecko [ ifk.uw.edu.pl ]

Name	Size	Permission
K01apache-htcacheclean	2.43 KB	-rwxr-xr-x
K01apache2	7.99 KB	-rwxr-xr-x
K01atd	1.05 KB	-rwxr-xr-x
K01brightness	2.13 KB	-rwxr-xr-x
K01exim4	6.99 KB	-rwxr-xr-x
K01firewalld	2.25 KB	-rwxr-xr-x
K01irqbalance	2.39 KB	-rwxr-xr-x
K01netfilter-persistent	1.33 KB	-rwxr-xr-x
K01php5.6-fpm	4.19 KB	-rwxr-xr-x
K01php7.0-fpm	4.19 KB	-rwxr-xr-x
K01php7.2-fpm	4.19 KB	-rwxr-xr-x
K01php7.3-fpm	4.19 KB	-rwxr-xr-x
K01php7.4-fpm	4.19 KB	-rwxr-xr-x
K01php8.2-fpm	4.19 KB	-rwxr-xr-x
K01saned	2.17 KB	-rwxr-xr-x
K01udev	6.71 KB	-rwxr-xr-x
K01unattended-upgrades	1.36 KB	-rwxr-xr-x
K01urandom	3.04 KB	-rwxr-xr-x
K02mysql	6.06 KB	-rwxr-xr-x
K03sendsigs	3.13 KB	-rwxr-xr-x
K04rsyslog	2.8 KB	-rwxr-xr-x
K05umountnfs.sh	2.21 KB	-rwxr-xr-x
K06nfs-common	5.53 KB	-rwxr-xr-x
K06rpcbind	2.42 KB	-rwxr-xr-x
K07hwclock.sh	3.72 KB	-rwxr-xr-x
K07networking	4.34 KB	-rwxr-xr-x
K08umountfs	2.71 KB	-rwxr-xr-x
K09umountroot	1.21 KB	-rwxr-xr-x
K10halt	1.3 KB	-rwxr-xr-x
README	353 B	-rw-r--r--

Code Editor : K01urandom

#! /bin/sh
### BEGIN INIT INFO
# Provides:          urandom
# Required-Start:    $local_fs $time
# Required-Stop:     $local_fs
# Default-Start:     S
# Default-Stop:      0 6
# Short-Description: Save and restore random seed between restarts.
# Description:       This script saves the random seed between restarts.
#                    It is called from the boot, halt and reboot scripts.
### END INIT INFO

## Assumption 1:  We assume $SAVEDFILE is a file (or a symlink
## to a file) that resides on a non-volatile medium that persists
## across reboots.
## Case 1a: Ideally, it is readable and writeable.  Its is unshared,
## i.e. its contents are unique to this machine.  It is protected so
## that its contents are not known to attackers.
## Case 1b: Less than ideally, it is read-only.  Its contents are
## unique to this machine and not known to attackers.
SAVEDFILE=/var/lib/urandom/random-seed

[ -c /dev/urandom ] || exit 0

PATH=/sbin:/bin
if ! POOLBYTES=$((
  ($(cat /proc/sys/kernel/random/poolsize 2>/dev/null) + 7) / 8
)) ; then
  POOLBYTES=512
fi
. /lib/init/vars.sh

. /lib/lsb/init-functions

do_status () {
	if [ -f $SAVEDFILE ] ; then
		return 0
	else
		return 4
	fi
}

case "$1" in
  start|"")
	[ "$VERBOSE" = no ] || log_action_begin_msg "Initializing random number generator"
	# Seed the RNG with date and time.
	# This is helpful in the less-than-ideal case where $SAVEDFILE
	# is read-only.
	# The value of this is greatly reduced if $SAVEDFILE is missing,
	# or its contents are shared machine-to-machine or known to
	# attackers (since they might well know at what time this
	# machine booted up).
	(
	  date +%s.%N

# Load and then save $POOLBYTES bytes,
	  # which is the size of the entropy pool
	  if [ -f "$SAVEDFILE" ]
	  then
		  cat "$SAVEDFILE"
	  fi
	# Redirect output of subshell (not individual commands)
	# to cope with a misfeature in the FreeBSD (not Linux)
	# /dev/random, where every superuser write/close causes
	# an explicit reseed of the yarrow.
	) >/dev/urandom

# Write a new seed into $SAVEDFILE because re-using a seed
	# compromises security.  Each time we re-seed, we want the
	# seed to be as different as possible.
	# Write it now, in case the machine crashes without doing
	# an orderly shutdown.
	# The write will fail if $SAVEDFILE is read-only, but it
	# doesn't hurt to try.
	umask 077
	dd if=/dev/urandom of=$SAVEDFILE bs=$POOLBYTES count=1 >/dev/null 2>&1
	ES=$?
	umask 022
	[ "$VERBOSE" = no ] || log_action_end_msg $ES
	;;
  stop)
	# Carry a random seed from shut-down to start-up;
	# Write it on shutdown, in case the one written at startup
	# has been lost, snooped, or otherwise compromised.
	# see documentation in linux/drivers/char/random.c
	[ "$VERBOSE" = no ] || log_action_begin_msg "Saving random seed"
	umask 077
	dd if=/dev/urandom of=$SAVEDFILE bs=$POOLBYTES count=1 >/dev/null 2>&1
	ES=$?
	[ "$VERBOSE" = no ] || log_action_end_msg $ES
	;;
  status)
	do_status
	exit $?
	;;
  restart|reload|force-reload)
	echo "Error: argument '$1' not supported" >&2
	exit 3
	;;
  *)
	echo "Usage: urandom start|stop" >&2
	exit 3
	;;
esac

${this.title}

Code Editor : K01urandom