path: root/rc.d/init.d/functions

# -*-Shell-script-*-
#
# functions	This file contains functions to be used by most or all
#		shell scripts in the /etc/init.d directory.
#

TEXTDOMAIN=initscripts
TEXTDOMAINDIR=/etc/locale
LOCPATH=/etc/locale
export TEXTDOMAINDIR LOCPATH

TMP=/tmp
TMPDIR=/tmp
export TMP TMPDIR

# Make sure umask is sane
umask 022

# Set up a default search path.
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
export PATH

if [ $PPID -ne 1 -a -z "$SYSTEMCTL_SKIP_REDIRECT" ] && \
		( /bin/mountpoint -q /cgroup/systemd || /bin/mountpoint -q /sys/fs/cgroup/systemd ) ; then
        case "$0" in
        /etc/init.d/*|/etc/rc.d/init.d/*)
		_use_systemctl=1
		;;
	esac
fi

systemctl_redirect () {
	local s
	local prog=${1##*/}
        local command=$2
        local options=""

	case "$command" in
	start)
		s=$"Starting $prog (via systemctl): "
		;;
	stop)
		s=$"Stopping $prog (via systemctl): "
		;;
	reload|try-reload)
		s=$"Reloading $prog configuration (via systemctl): "
		;;
	restart|try-restart|condrestart)
		s=$"Restarting $prog (via systemctl): "
		;;
	esac

        if [ -n "$SYSTEMCTL_IGNORE_DEPENDENCIES" ] ; then
                options="$options --ignore-dependencies"
        fi
        if [ -n "$SYSTEMCTL_NO_BLOCK" ] ; then
                options="$options --no-block"
        fi

	action "$s" /bin/systemctl $options $command "$prog.service"
}


[ -z "${CONSOLETYPE:-}" ] && CONSOLETYPE="$(/sbin/consoletype <&2)"
# Get a sane screen width, and default to 80 when exact info not available
[ -z "${COLUMNS:-}" ] && COLUMNS=`stty -a 2>/dev/null | sed -n 's/.*columns \([0-9]*\);.*/\1/p'`
[ -z "${COLUMNS:-}" ] && COLUMNS=80

function load_i18_settings() {
    if [ -f /etc/sysconfig/i18n -o -f /etc/locale.conf ]; then
        if [ -z "$NOLOCALE" ]; then
            if [ -f /etc/locale.conf ]; then
                . /etc/locale.conf
            else
                . /etc/sysconfig/i18n
            fi
            if [ "$CONSOLETYPE" != "pty" ]; then
                [ "$CONSOLE_NOT_LOCALIZED" = "yes" ] && GP_LANG=C
                [ "$CONSOLE_NOT_LOCALIZED" = "yes" ] && GP_LANGUAGE=C
            fi
            if [ -z "$GP_LANG" ]; then
                [ -n "$LC_CTYPE" ] && GP_LANG=$LC_CTYPE || GP_LANG=$LC_MESSAGES
            fi
            if [ -z "$GP_LANGUAGE" ]; then
                [ -n "$LANGUAGE" ] && GP_LANGUAGE=$LANGUAGE || GP_LANGUAGE=$GP_LANG
            fi
        fi
    fi
}

function reset_i18_settings() {
    local CONSOLE_NOT_LOCALIZED=yes
    LC_ALL=C
    load_i18_settings
}

load_i18_settings

# Read in our configuration
if [ -z "${BOOTUP:-}" ]; then
  if [ -f /etc/sysconfig/init ]; then
      . /etc/sysconfig/init
  else
    # This all seem confusing? Look in /etc/sysconfig/init,
    # or in /usr/share/doc/initscripts-*/sysconfig.txt
    BOOTUP=color
    RES_COL=$((COLUMNS - 15))
    MOVE_TO_COL="echo -en \\033[${RES_COL}G"
    SETCOLOR_SUCCESS="echo -en \\033[1;32m"
    SETCOLOR_FAILURE="echo -en \\033[1;31m"
    SETCOLOR_WARNING="echo -en \\033[1;33m"
    SETCOLOR_NORMAL="echo -en \\033[0;39m"
    LOGLEVEL=1
  fi
  if [ "$CONSOLETYPE" = "serial" ]; then
      BOOTUP=serial
      MOVE_TO_COL=
      SETCOLOR_SUCCESS=
      SETCOLOR_FAILURE=
      SETCOLOR_WARNING=
      SETCOLOR_NORMAL=
  fi
fi

gprintf() {
        if [ -x /bin/gettext -a -n "$1" ]; then 
	   if [ -n "$GP_LANG" ]; then
	       local TEXT=`LC_ALL=$GP_LANG LANGUAGE=$GP_LANGUAGE gettext -e --domain=$TEXTDOMAIN -- "$1"`
	   else
	       local TEXT=`gettext -e --domain=$TEXTDOMAIN -- "$1"`
	   fi
	else
	   local TEXT=$1
	fi
	[ "${1#*\\n}" ] || TEXT="$TEXT\n"

	shift
	printf -- "$TEXT" "$@"
}	

# Frontend to gprintf (support up to 4 %s in format string)
# returns the message transleted in GPRINTF_MSG and
# the resting parms in GPRINTF_REST
# This simplifies a lot the call of functions like action,
# now with i18n support
gprintf_msg_rest() {
case "$1" in
       *%s*%s*%s*%s*)
               GPRINTF_MSG=$(gprintf "$1" "$2" "$3" "$4" "$5")
               shift 5;;
       *%s*%s*%s*)
               GPRINTF_MSG=$(gprintf "$1" "$2" "$3" "$4")
               shift 4;;
       *%s*%s*)
               GPRINTF_MSG=$(gprintf "$1" "$2" "$3")
               shift 3;;
       *%s*)
               GPRINTF_MSG=$(gprintf "$1" "$2")
               shift 2;;
       *)
               GPRINTF_MSG=$(gprintf "$1")
               shift;;
esac
GPRINTF_REST="$@"
}

# Check if $pid (could be plural) are running with
# the same root as this script
inmyroot() {
	local i r

	for i in $* ; do
		[ "/proc/$i/root" -ef "/proc/$$/root" ] && r="$r $i"
	done
	echo "$r"
}


# Interpret escape sequences in an fstab entry
fstab_decode_str() {
	fstab-decode echo "$1"
}

# Check if any of $pid (could be plural) are running
checkpid() {
	local i

	for i in $* ; do
		[ -d "/proc/$i" ] && return 0
	done
	return 1
}

__readlink() {
    ls -bl "$@" 2>/dev/null| awk '{ print $NF }'
}

__fgrep() {
    s=$1
    f=$2
    while read line; do
	if strstr "$line" "$s"; then
	    echo $line
	    return 0
	fi
    done < $f
    return 1
}

# __umount_loop awk_program fstab_file first_msg retry_msg retry_umount_args
# awk_program should process fstab_file and return a list of fstab-encoded
# paths; it doesn't have to handle comments in fstab_file.
__umount_loop() {
	local remaining sig=-15
	local retry=3 count

	remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
	while [ -n "$remaining" -a "$retry" -gt 0 ]; do
		if [ "$retry" -eq 3 ]; then
			action "$3" fstab-decode umount $remaining
		else
			action "$4" fstab-decode umount $5 $remaining
		fi
		count=4
		remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
		while [ "$count" -gt 0 ]; do
			[ -z "$remaining" ] && break
			count=$(($count-1))
			usleep 500000
			remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
		done
		[ -z "$remaining" ] && break
		fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null
		sleep 3
		retry=$(($retry -1))
		sig=-9
	done
}

# Similar to __umount loop above, specialized for loopback devices
__umount_loopback_loop() {
	local remaining devremaining sig=-15
	local retry=3

	remaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" && $2 !~ /^\/live\// {print $2}' /proc/mounts)
	devremaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" && $2 !~ /^\/live\// {print $1}' /proc/mounts)
	while [ -n "$remaining" -a "$retry" -gt 0 ]; do
		if [ "$retry" -eq 3 ]; then
			action "Unmounting loopback filesystems: " \
				fstab-decode umount $remaining
		else
			action "Unmounting loopback filesystems (retry):" \
				fstab-decode umount $remaining
		fi
		for dev in $devremaining ; do
			losetup $dev > /dev/null 2>&1 && \
				action "Detaching loopback device %s: " $dev \
				losetup -d $dev
		done
		remaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" && $2 !~ /^\/live\// {print $2}' /proc/mounts)
		devremaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" && $2 !~ /^\/live\// {print $1}' /proc/mounts)
		[ -z "$remaining" ] && break
		fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null
		sleep 3
		retry=$(($retry -1))
		sig=-9
	done
}

# __proc_pids {program} [pidfile]
# Set $pid to pids from /var/run* for {program}.  $pid should be declared
# local in the caller.
# Returns LSB exit code for the 'status' action.
__pids_var_run() {
	local base=${1##*/}
	local pid_file=${2:-/var/run/$base.pid}

	pid=
	if [ -f "$pid_file" ] ; then
	        local line p

		[ ! -r "$pid_file" ] && return 4 # "user had insufficient privilege"
		while : ; do
			read line
			[ -z "$line" ] && break
			for p in $line ; do
				[ -z "${p//[0-9]/}" ] && [ -d "/proc/$p" ] && pid="$pid $p"
			done
		done < "$pid_file"

	        if [ -n "$pid" ]; then
	                return 0
	        fi
		return 1 # "Program is dead and /var/run pid file exists"
	fi
	return 3 # "Program is not running"
}

# Output PIDs of matching processes, found using pidof
__pids_pidof() {
	pidof -c -m -o $$ -o $PPID -o %PPID -x "$1" || \
		pidof -c -m -o $$ -o $PPID -o %PPID -x "${1##*/}"
}


# A function to start a program.
daemon() {
	# Test syntax.
	local gotbase= force= nicelevel corelimit
	local pid base= user= nice= bg= pid_file=
	local cgroup=
	nicelevel=0
	while [ "$1" != "${1##[-+]}" ]; do
	  case $1 in
	    '')    gprintf "%s: Usage: daemon [+/-nicelevel] {program}\n" $0
	           return 1;;
	    --check)
		   base=$2
		   gotbase="yes"
		   shift 2
		   ;;
	    --check=?*)
	    	   base=${1#--check=}
		   gotbase="yes"
		   shift
		   ;;
	    --user)
		   user=$2
		   shift 2
		   ;;
	    --user=?*)
	           user=${1#--user=}
		   shift
		   ;;
	    --pidfile)
		   pid_file=$2
		   shift 2
		   ;;
	    --pidfile=?*)
		   pid_file=${1#--pidfile=}
		   shift
		   ;;
	    --force)
	    	   force="force"
		   shift
		   ;;
	    [-+][0-9]*)
	    	   nice="nice -n $1"
	           shift
		   ;;
	    *)     gprintf "%s: Usage: daemon [+/-nicelevel] {program}\n" $0
	           return 1;;
	  esac
	done

        # Save basename.
        [ -z "$gotbase" ] && base=${1##*/}

        # See if it's already running. Look *only* at the pid file.
	__pids_var_run "$base" "$pid_file"

	[ -n "$pid" -a -z "$force" ] && return

	# make sure it doesn't core dump anywhere unless requested
	corelimit="ulimit -S -c ${DAEMON_COREFILE_LIMIT:-0}"
	
	# if they set NICELEVEL in /etc/sysconfig/foo, honor it
	[ -n "${NICELEVEL:-}" ] && nice="nice -n $NICELEVEL"
	
	# if they set CGROUP_DAEMON in /etc/sysconfig/foo, honor it
	if [ -n "${CGROUP_DAEMON}" ]; then
		if [ ! -x /bin/cgexec ]; then
			echo -n "Cgroups not installed"; warning
			echo
		else
			cgroup="/bin/cgexec";
			for i in $CGROUP_DAEMON; do
				cgroup="$cgroup -g $i";
			done
		fi
	fi

	# Echo daemon
        [ "${BOOTUP:-}" = "verbose" -a -z "${LSB:-}" ] && echo -n " $base"

	# And start it up.
	if [ -z "$user" ]; then
	   $cgroup $nice /bin/bash -c "$corelimit >/dev/null 2>&1 ; $*"
	else
	   $cgroup $nice su -s /bin/bash - $user -c "$corelimit >/dev/null 2>&1 ; $*"
	fi
	rc=$?
	[ $rc = 0 ] && success "%s startup" $base || failure "%s startup" $base
	return $rc
}

# A function to stop a program.
killproc() {
	local RC killlevel= base pid pid_file= delay try

	RC=0; delay=3
	# Test syntax.
	if [ "$#" -eq 0 ]; then
		gprintf "Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]"
		return 1
	fi
	if [ "$1" = "-p" ]; then
		pid_file=$2
		shift 2
	fi
	if [ "$1" = "-d" ]; then
		delay=$2
		shift 2
	fi
        

	# check for second arg to be kill level
	[ -n "${2:-}" ] && killlevel=$2

        # Save basename.
        base=${1##*/}

        # Find pid.
	__pids_var_run "$1" "$pid_file"
	RC=$?
	if [ -z "$pid" ]; then
		if [ -z "$pid_file" ]; then
			pid="$(__pids_pidof "$1")"
		else
			[ "$RC" = "4" ] && { failure $"$base shutdown" ; return $RC ;}
		fi
	fi

	# Avoid killing processes not running in the same root
	[ -n "$pid" ] && pid="`inmyroot $pid`"
	
        # Kill it.
        if [ -n "$pid" ] ; then
                [ "$BOOTUP" = "verbose" -a -z "${LSB:-}" ] && echo -n "$base "
		if [ -z "$killlevel" ] ; then
		       if checkpid $pid 2>&1; then
			   # TERM first, then KILL if not dead
			   kill -TERM $pid >/dev/null 2>&1
			   usleep 50000
			   if checkpid $pid ; then
				try=0
				while [ $try -lt $delay ] ; do
					checkpid $pid || break
					sleep 1
					let try+=1
				done
				if checkpid $pid ; then
					kill -KILL $pid >/dev/null 2>&1
					usleep 50000
				fi
			   fi
		        fi
			checkpid $pid
			RC=$?
			[ "$RC" -eq 0 ] && failure "%s shutdown" $base || success "%s shutdown" $base
			RC=$((! $RC))
		# use specified level only
		else
		        if checkpid $pid; then
	                	kill $killlevel $pid >/dev/null 2>&1
				RC=$?
				[ "$RC" -eq 0 ] && success "%s %s" $base $killlevel || failure "%s %s" $base $killlevel
			elif [ -n "${LSB:-}" ]; then
				RC=7 # Program is not running
			fi
		fi
	else
		if [ -n "${LSB:-}" -a -n "$killlevel" ]; then
			RC=7 # Program is not running
		else
			failure "%s shutdown" $base
			RC=0
		fi
	fi

        # Remove pid file if any.
	if [ -z "$killlevel" ]; then
            rm -f "${pid_file:-/var/run/$base.pid}"
	fi
	return $RC
}

# A function to find the pid of a program. Looks *only* at the pidfile
pidfileofproc() {
	local pid

	# Test syntax.
	if [ "$#" -eq 0 ] ; then
		gprintf "Usage: pidfileofproc {program}\n"
		return 1
	fi

	__pids_var_run "$1"
	[ -n "$pid" ] && echo $pid
	return 0
}

# A function to find the pid of a program.
pidofproc() {
	local RC pid pid_file=

	# Test syntax.
	if [ "$#" = 0 ]; then
		gprintf "Usage: pidofproc [-p pidfile] {program}\n"
		return 1
	fi
	if [ "$1" = "-p" ]; then
		pid_file=$2
		shift 2
	fi
	fail_code=3 # "Program is not running"

	# First try "/var/run/*.pid" files
	__pids_var_run "$1" "$pid_file"
	RC=$?
	if [ -n "$pid" ]; then
		echo $pid
		return 0
	fi

	[ -n "$pid_file" ] && return $RC
	__pids_pidof "$1" || return $RC
}

status() {
	local base pid lock_file= pid_file=

	# Test syntax.
	if [ "$#" = 0 ] ; then
		gprintf "Usage: status [-p pidfile] {program}\n"
		return 1
	fi
	if [ "$1" = "-p" ]; then
		pid_file=$2
		shift 2
	fi
	if [ "$1" = "-l" ]; then
		lock_file=$2
		shift 2
	fi
	base=${1##*/}

	if [ "$_use_systemctl" = "1" ]; then
		systemctl status ${0##*/}.service
		return $?
	fi

	# First try "pidof"
	__pids_var_run "$1" "$pid_file"
	RC=$?
	if [ -z "$pid_file" -a -z "$pid" ]; then
		pid="$(__pids_pidof "$1")"
	fi
	if [ -n "$pid" ]; then
	        gprintf "%s (pid %s) is running...\n" ${base} "$pid"
	        return 0
	fi

	case "$RC" in
		0)
			gprintf "%s (pid %s) is running...\n" ${base} "$pid"
			return 0
			;;
		1)
	                gprintf "%s dead but pid file exists\n" ${base}
	                return 1
			;;
		4)
			gprintf "%s status unknown due to insufficient privileges." ${base}
			return 4
			;;
	esac
	if [ -z "${lock_file}" ]; then
		lock_file=${base}
	fi
	# See if /var/lock/subsys/${lock_file} exists
	if [ -f /var/lock/subsys/${lock_file} ]; then
		gprintf "%s dead but subsys locked\n" ${base}
		return 2
	fi
	gprintf "%s is stopped\n" ${base}
	return 3
}

echo_success() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_SUCCESS
  gprintf "  OK  "
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 0
}

echo_failure() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  gprintf "FAILED"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 1
}

echo_passed() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
  gprintf "PASSED"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 1
}

echo_warning() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
  gprintf "WARNING"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 1
}

# Inform the graphical boot of our current state
update_boot_stage() {
  rc_splash "$1"
}

# Log that something succeeded
success() {
  gprintf_msg_rest "$@"
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$GPRINTF_MSG" -e 1
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_success
  return 0
}

# Log that something failed
failure() {
  local rc=$?
  gprintf_msg_rest "$@"
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$GPRINTF_MSG" -e 2
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_failure
  return $rc
}

# Log that something passed, but may have had errors. Useful for fsck
passed() {
  local rc=$?
  gprintf_msg_rest "$@"
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$GPRINTF_MSG" -e 1
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_passed
  return $rc
}  

# Log a warning
warning() {
  local rc=$?
  gprintf_msg_rest "$@"
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$1" -e 1
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_warning
  return $rc
}  

# Run some action. Log its output.
action() {
  local rc
  gprintf_msg_rest "$@"
  echo -n "$GPRINTF_MSG "

  $GPRINTF_REST && success "$GPRINTF_MSG" || failure "$GPRINTF_MSG"
  rc=$?
  echo
  return $rc
}

# returns OK if $1 contains $2
strstr() {
  [ "${1#*$2*}" = "$1" ] && return 1
  return 0
}


# Confirm whether we really want to run this service
confirm() {
  gprintf "Start service %s (Y)es/(N)o/(C)ontinue? [Y] \n" $1
  local YES=`gprintf "yY"`
  local NOT=`gprintf "nN"`
  local CNT=`gprintf "cC"`
  read answer

  if strstr "$YES" "$answer" || [ "$answer" = "" ] ; then
    return 0
  elif strstr "$CNT" "$answer" ; then
    return 2
  elif strstr "$NOT" "$answer" ; then
    return 1
  fi
  confirm $*
}

initsplash() {
    [[ -f /etc/sysconfig/bootsplash ]] && source /etc/sysconfig/bootsplash
    [[ -n $SPLASH ]] && splash_rc=$SPLASH
    [[ -x /sbin/plymouthd ]] || splash_rc=no
    if [ -x /sbin/plymouthd ]; then
	splash_mode=plymouth
	if [ -r /proc/cmdline ] && grep -q splash /proc/cmdline && [ "$splash_rc" != "no" ]; then
  	    splash_rc=yes
	else
	    splash_rc=no
	    /bin/plymouth quit 2>/dev/null
	    PLYMOUTH=
	fi
    else
	splash_rc=no
    fi

    [[ $splash_rc != "no" && $splash_rc != "No" && $splash_rc != "NO" ]] && export splash_rc=yes
    [[ $splash_mode = "plymouth" ]] || splash_rc=
    if [[ -z "$1" ]]; then
    set `/sbin/runlevel`
        __runlevel=$2
        __previous=$1
    else
	__runlevel=$1
	__previous=N
    fi
    [ "$splash_mode" = "plymouth" -a "$splash_rc" = "yes" -a -e /sys/class/graphics/fb0 ] && [ "$__runlevel" = 0 -o "$__runlevel" = 6 ] && /sbin/plymouthd --mode=shutdown
    export splash_mode splash_rc 
}

rc_splash() {
    [[ "$splash_rc" = "yes" ]] || return
    if [ "$splash_mode" = "plymouth" ]; then
       if [ "$1" = "start" ]; then
	/bin/plymouth --show-splash 2>/dev/null
	if [ "$2" = "1" ]; then
		/bin/plymouth message --text="`OUTPUT_CHARSET=UTF-8 gprintf 'Booting the system... Press Esc for verbose mode.'`" 2> /dev/null
	elif [ "$2" = "0" ]; then
		/bin/plymouth message --text="`OUTPUT_CHARSET=UTF-8 gprintf 'Shutting down the system... Press Esc for verbose mode.'`" 2> /dev/null
	else 
		/bin/plymouth message --text="`OUTPUT_CHARSET=UTF-8 gprintf 'Restarting the system... Press Esc for verbose mode.'`" 2> /dev/null
        fi
       elif [ "$1" = "stop" -o "$1" = "exit" ]; then
	/bin/plymouth quit 2>/dev/null
       elif [ "$1" = "umount" ]; then
	/bin/plymouth quit --retain-splash 2>/dev/null
       elif [ "$1" = "verbose" ]; then
	/bin/plymouth --hide-splash 2>/dev/null
       else
	/bin/plymouth --update "$1" 2>/dev/null
       fi
    fi
}

#
# This function finds the encoding of the current locale (it can
# be overwritten by a "CHARSET" variable if needed); the call
# to "locale charmap" should return the proper value; in case it
# fails, a guess from the locale name is done.
# this function is also defined in setsysfont script
# if you change it here change it there too, to have the same behaviour
#
get_locale_encoding() {
    CHARSET=${CHARSET=`LC_ALL=$GP_LANG locale charmap 2> /dev/null`}
    case "$CHARSET" in 
	ANSI_X3.4-1968)
	    # this means that the locale has not been
	    # correctly initialized; we will look at the
	    # locale naming and use the known
	    # default values for various languages
	    case "${LC_ALL}${LC_CTYPE}${LANG}" in 
		# the locale tells it is in UTF-8, or it is a language
		# we know must be in UTF-8 by default
		*.utf8*|*.UTF-8*| \
		am*|an*|ar*|as*|az*|bn*|cy*|eo*|fa*|gn*|gu*|he*|hi*|hy*| \
		id*|ka*|kn*|ku*|ky*|lo*|m*|ne*|om*|pa*|ph*|se*|sr*|st*| \
		ta*|te*|tg*|ti*|tk*|tl*|tt*|ug*|ur*|uz*|vi*|xh*|y*)
		    CHARSET="UTF-8" ;;
	    esac
	    ;;
    esac
    echo "$CHARSET"
}

# resolve a device node to its major:minor numbers in decimal or hex
get_numeric_dev() {
(
    fmt="%d:%d"
    if [ "$1" = "hex" ]; then
        fmt="%x:%x"
    fi
    ls -lH "$2" | awk '{ sub(/,/, "", $5); printf("'"$fmt"'", $5, $6); }'
) 2>/dev/null
}

# Check whether file $1 is a backup or rpm-generated file and should be ignored
is_ignored_file() {
    case "$1" in
	*~ | *.bak | *.orig | *.rpmnew | *.rpmorig | *.rpmsave)
	    return 0
	    ;;
    esac
    return 1
}

# Evaluate shvar-style booleans
is_true() {
    case "$1" in
	[tT] | [yY] | [yY][eE][sS] | [tT][rR][uU][eE])
	return 0
	;;
    esac
    return 1
}

# Evaluate shvar-style booleans
is_false() {
    case "$1" in
	[fF] | [nN] | [nN][oO] | [fF][aA][lL][sS][eE])
	return 0
	;;
    esac
    return 1
}

# Apply sysctl settings, including files in /etc/sysctl.d
apply_sysctl() {
    sysctl -e -p /etc/sysctl.conf >/dev/null 2>&1
    for file in /etc/sysctl.d/* ; do
        is_ignored_file "$file" && continue
        test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1
    done
}

key_is_random() {
    [ "$1" = "/dev/urandom" -o "$1" = "/dev/hw_random" \
	-o "$1" = "/dev/random" ]
}

find_crypto_mount_point() {
    local fs_spec fs_file fs_vfstype remaining_fields
    local fs
    while read fs_spec fs_file remaining_fields; do
	if [ "$fs_spec" = "/dev/mapper/$1" ]; then
	    echo $fs_file
	    break;
	fi
    done < /etc/fstab
}

# Because of a chicken/egg problem, init_crypto must be run twice.  /var may be
# encrypted but /var/lib/random-seed is needed to initialize swap.
init_crypto() {
    local have_random dst src key opt lsl owner params makeswap skip arg opt
    local param value rc ret mke2fs mdir prompt mount_point

    ret=0
    have_random=$1
    while read dst src key opt; do
	[ -z "$dst" -o "${dst#\#}" != "$dst" ] && continue
        [ -b "/dev/mapper/$dst" ] && continue;
	if [ "$have_random" = 0 ] && key_is_random "$key"; then
	    continue
	fi
	if [ -n "$key" -a "x$key" != "xnone" ]; then
	    if test -e "$key" ; then
		owner=$(ls -l $key | (read a b owner rest; echo $owner))
		if ! key_is_random "$key"; then
		    lsl=$(ls -l "$key")
		    if [ "${lsl:4:6}" != "------" ]; then
		       gprintf "INSECURE MODE FOR %s\n" $key
		    fi
		fi
		if [ "$owner" != root ]; then
		    gprintf "INSECURE OWNER FOR %s\n" $key
		fi
	    else
		gprintf "Key file for %s not found, skipping\n" $dst
		ret=1
		continue
	    fi
	else
	    key=""
	fi
	params=""
	makeswap=""
	mke2fs=""
	skip=""
	# Parse the src field for UUID= and convert to real device names
	if [ "${src%%=*}" == "UUID" ]; then
		src=$(/sbin/blkid -t "$src" -l -o device)
	elif [ "${src/^\/dev\/disk\/by-uuid\/}" != "$src" ]; then
		src=$(__readlink $src)
	fi
	# Is it a block device?
	[ -b "$src" ] || continue
	# Is it already a device mapper slave? (this is gross)
	devesc=${src##/dev/}
	devesc=${devesc//\//!}
	for d in /sys/block/dm-*/slaves ; do
	    [ -e $d/$devesc ] && continue 2
	done
	# Parse the options field, convert to cryptsetup parameters and
	# contruct the command line
	while [ -n "$opt" ]; do
	    arg=${opt%%,*}
	    opt=${opt##$arg}
	    opt=${opt##,}
	    param=${arg%%=*}
	    value=${arg##$param=}

	    case "$param" in
	    cipher)
		params="$params -c $value"
		if [ -z "$value" ]; then
		    gprintf "%s: no value for cipher option, skipping\n" $dst
		    skip="yes"
		fi
	    ;;
	    size)
		params="$params -s $value"
		if [ -z "$value" ]; then
		    gprintf "%s: no value for size option, skipping\n" $dst
		    skip="yes"
		fi
	    ;;
	    hash)
		params="$params -h $value"
		if [ -z "$value" ]; then
		    gprintf "%s: no value for hash option, skipping\n" $dst
		    skip="yes"
		fi
	    ;;
	    noauto)
		skip="yes"
		;;
	    verify)
	        params="$params -y"
	    ;;
	    swap)
		makeswap=yes
		;;
	    tmp)
		mke2fs=yes
	    esac
	done
	if [ "$skip" = "yes" ]; then
	    ret=1
	    continue
	fi
	if [ -z "$makeswap" ] && cryptsetup isLuks "$src" 2>/dev/null ; then
	    if key_is_random "$key"; then
		gprintf "%s: LUKS requires non-random key, skipping\n" $dst
		ret=1
		continue
	    fi
	    if [ -n "$params" ]; then
		echo "$dst: options are invalid for LUKS partitions," \
		    "ignoring them"
	    fi
	    if [ -n "$key" ]; then
		/sbin/cryptsetup -d $key luksOpen "$src" "$dst" <&1 2>/dev/null && success || failure
		rc=$?
	    else
		mount_point="$(find_crypto_mount_point $dst)"
		[ -n "$mount_point" ] || mount_point=${src##*/}
		prompt=$(printf $"%s is password protected" "$mount_point")
		if [ "$splash_rc" = yes ] && [ -d /usr/share/plymouth ]; then
		    plymouth ask-for-password --prompt "$prompt" --command="/sbin/cryptsetup luksOpen -T1 $src $dst" --number-of-tries=3 <&1
		    rc=$?
		else
		    # stop splash to ask for password
		    rc_splash verbose
		    /sbin/cryptsetup luksOpen "$src" "$dst" <&1 && success || failure
		    rc=$?
		fi
	    fi
	else
	    if [ -z "$key" ]; then
		mount_point="$(find_crypto_mount_point $dst)"
		[ -n "$mount_point" ] || mount_point=${src##*/}
		prompt=$(printf $"%s is password protected" "$mount_point")
		plymouth ask-for-password --prompt "$prompt" --command="/sbin/cryptsetup $params create $dst $src" <&1
		rc=$?
	    else
		/sbin/cryptsetup $params ${key:+-d $key} create "$dst" "$src" <&1 2>/dev/null && success || failure
		rc=$?
	    fi
	fi
	if [ $rc -ne 0 ]; then
	    ret=1
	    continue
	fi
	if [ -b "/dev/mapper/$dst" ]; then
	    if [ "$makeswap" = "yes" ]; then
		mkswap "/dev/mapper/$dst" 2>/dev/null >/dev/null
	    fi
	    if [ "$mke2fs" = "yes" ]; then
		if mke2fs "/dev/mapper/$dst" 2>/dev/null >/dev/null \
		    && mdir=$(mktemp -d /tmp/mountXXXXXX); then
		    mount "/dev/mapper/$dst" "$mdir" && chmod 1777 "$mdir"
		    umount "$mdir"
		    rmdir "$mdir"
		fi
	    fi
	fi
    done < /etc/crypttab
    return $ret
}

# A sed expression to filter out the files that is_ignored_file recognizes
__sed_discard_ignored_files='/\(~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d'

if [ "$_use_systemctl" = "1" ]; then
        if  [ "x$1" = xstart -o \
                "x$1" = xstop -o \
                "x$1" = xrestart -o \
                "x$1" = xreload -o \
                "x$1" = xtry-restart -o \
                "x$1" = xforce-reload -o \
                "x$1" = xcondrestart ] ; then

		systemctl_redirect $0 $1
		exit $?
	fi
fi