File systemd-sysv-install of Package failed_systemd

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File systemd-sysv-install of Package failed_systemd

#!/bin/bash

# This script is called by "systemctl enable/disable" when the given unit is a
# SysV init.d script. It needs to call the distribution's mechanism for
# enabling/disabling those, such as chkconfig, update-rc.d, or similar. This can
# optionally take a --root argument for enabling a SysV init script in a chroot
# or similar.
#
# chkconfig(8) and insserv(8) are no more available hence let's do the bare
# minimum and create/remove the symlinks for the well known runlevels and
# nothing more. Note that we don't take care of enabling/disabling the service
# dependencies as the sysv-generator will take care of them for us (openSUSE
# specific).
#

set -e

usage() {
	echo >&2 "Usage: $0 [--quiet] [--root=path] enable|disable|is-enabled <sysv script name>"
	exit 1
}

info() {
	$quiet || echo "$*"
}

die() {
	echo >&2 "error: $*, aborting."
	exit 1
}

declare -A lsb_header

check_runlevels() {
	for l in $*; do
		# Sanity check
		case $l in
		0|1|2|3|4|5|6)	continue ;;
		*)		return 1
		esac
	done
}

load_initscript() {
	local found_lsb_start_marker=false
	local found_lsb_end_marker=false

[ -r $1 ] || die "initscript /etc/init.d/$1 can't be read"

lsb_header=()

while read line; do
		# skip anything that is not a comment
		[[ "$line" =~ ^# ]] || continue

if ! $found_lsb_start_marker; then
			[ "$line" == "### BEGIN INIT INFO" ] &&
				found_lsb_start_marker=true
			continue
		fi

line=$(echo ${line:1})

case "$line" in
		Default-Start:*)
			levels=$(echo ${line:14})

check_runlevels $levels ||
				die "Invalid runlevels specified in $line"

lsb_header[Default-Start]=$levels
			;;
		"## END INIT INFO")
			found_lsb_end_marker=true
			break ;;
		esac
	done <$1

$found_lsb_end_marker ||
		die "malformated LSB header in $1: missing LSB end marker"
}

enable_initscript() {
	load_initscript $1

for l in ${lsb_header[Default-Start]}; do
		symlink="$(pwd)/rc${l}.d/S50$1"

info "ln -sf ../$1 $symlink"
		ln -sf ../$1 "$symlink"
	done
}

disable_initscript() {
	for symlink in rc*.d/[SK]*; do
		if [ -L $symlink ] && [ $(readlink $symlink) = "../$1" ]; then
			info "rm $(pwd)/$symlink"
			rm $symlink
		fi
	done
}

is_initscript_enabled() {
	for symlink in rc*.d/S*; do
		[ -L $symlink ] && [ $(readlink $symlink) = "../$1" ] &&
			return 0
	done
	return 1
}

root=
quiet=false

# parse options
eval set -- "$(getopt --name $(basename $0) -o hqr: --long help,quiet,root: -- "$@")"
while true; do
	case "$1" in
	-h|--help)
		usage ;;
	-r|--root)
		shift
		root=$1 ;;
	-q|--quiet)
		quiet=true ;;
        --)
		shift
		break ;;
        *)
		usage ;;
	esac
	shift
done

[ $# -eq 2 ] || usage
action=$1
name=$2

sysvinit_path=$(realpath -q -e $root/etc/init.d) ||
	die "$root/etc/init.d: no such file or directory"

cd $sysvinit_path

case "$action" in
enable)		enable_initscript $name ;;
disable)	disable_initscript $name ;;
is-enabled)	is_initscript_enabled $name ;;
*)	        usage
esac

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