298 lines
8.1 KiB
Plaintext
298 lines
8.1 KiB
Plaintext
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#!/bin/bash
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#
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# /lib/systemd/system-generator/syslog-service-generator
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#
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# Copyright (c) 2011 SuSE LINUX Products GmbH, Germany.
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#
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# Description:
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#
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# Write out syslog.service and if required klogd.service depending
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# on the configuration found in /etc/sysconfig/syslog. Also check
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# if network target is required with this we do not required the
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# earlysyslog hack anymore. Based on the /etc/init.d/syslog script
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# as well as on the /etc/init.d/earlysyslog wrapper script.
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#
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# Author: Werner Fink
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# Please send feedback to http://www.suse.de/feedback
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#
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umask 0022
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BINDIR=/sbin
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UNIT_PATH=/etc/systemd/system
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RUN_PATH=/run/systemd/system
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test -s /etc/sysconfig/syslog && . /etc/sysconfig/syslog
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#
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# Update $SYSLOG_DAEMON if not up-to-date
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#
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if test -z "$SYSLOG_DAEMON" -o ! -x "$BINDIR/$SYSLOG_DAEMON" ; then
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for SYSLOG_DAEMON in rsyslogd syslog-ng syslogd ; do
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test -x "$BINDIR/$SYSLOG_DAEMON" && break
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done
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fi
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#
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# Default is no network and start klogd
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#
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network=
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start_klogd=yes
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klogd=klogd.service
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#
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# Now check for the three possible system loggers for required
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# network connection and for external klogd. Note that /var/run
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# does not exist at boot time, therefore files and directories
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# will be created below the /run tmpfs.
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#
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case "$SYSLOG_DAEMON" in
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syslog-ng)
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syslog=syslog-ng
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config=/etc/syslog-ng/syslog-ng.conf
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socksdir=/var/run/syslog-ng
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socks=$socksdir/additional-log-sockets.conf
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if test -s "$config" ; then
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while read line ; do
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case "$line" in
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\#*|"") continue ;;
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*udp\ *|*udp\(*) network=network.target ;;
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*tcp\ *|*tcp\(*) network=network.target ;;
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esac
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done < ${config}
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fi
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/bin/mkdir -p -m 0755 ${socksdir#/var}
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/bin/touch -m 0600 ${socks#/var}
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params="$SYSLOG_NG_PARAMS"
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;;
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rsyslogd)
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syslog=rsyslogd
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config=/etc/rsyslog.early.conf
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socksdir=/var/run/rsyslog
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socks=$socksdir/additional-log-sockets.conf
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#
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# In hope this works with the rsyslog.early.conf file
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# (hard to implement for rsyslog with its includes/if
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# statements)...
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#
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if test -s "$config" ; then
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while read select action ; do
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case "$select" in
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\#*|"")
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continue
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esac
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case "$action" in
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*@*)
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network=network.target
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break
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esac
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done < ${config}
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test -n "$network" && config=/etc/rsyslog.conf
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else
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config=/etc/rsyslog.conf
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fi
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if test -r "$config" ; then
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while read one two rest ; do
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if test "$one" = '$ModLoad' -a "$two" = 'imklog.so' ; then
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start_klogd=no
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break
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fi
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done < $config
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fi
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/bin/mkdir -p -m 0755 ${socksdir#/var}
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/bin/touch -m 0600 ${socks#/var}
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compat=${RSYSLOGD_COMPAT_VERSION:-${RSYSLOGD_NATIVE_VERSION}}
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params="-c ${compat:-3} -f $config $RSYSLOGD_PARAMS"
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;;
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*)
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syslog=syslogd
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config=/etc/syslog.conf
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socksdir=/var/run/syslog
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socks=$socksdir/additional-log-sockets.env
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if test -s "$config" ; then
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while read select action ; do
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case "$select" in \#*|"") continue ;; esac
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case "$action" in *@*) network=network.target ;; esac
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done < ${config}
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fi
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if test -r "$config" ; then
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while read line; do
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case $line in
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file*/proc/kmsg*)
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start_klogd=no
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break
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esac
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done < $config
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fi
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/bin/mkdir -p -m 0755 ${socksdir#/var}
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/bin/touch -m 0600 ${socks#/var}
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params="$SYSLOGD_PARAMS"
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esac
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syslog_bin=${BINDIR}/$syslog
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klog_bin=${BINDIR}/klogd
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test -s ${config} || exit 1
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test -x ${syslog_bin} || exit 1
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#
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# Make sure that we have a log fifo which is used by X11
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#
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if test -e /dev/xconsole -a ! -p /dev/xconsole ; then
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/bin/rm -f /dev/xconsole
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fi
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if test ! -e /dev/xconsole ; then
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/bin/mknod -m 0600 /dev/xconsole p
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/bin/chown root:tty /dev/xconsole
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fi
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#
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# No klogd.service required
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#
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test "$start_klogd" = no && klogd=
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#
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# Create a temporary file for syslog.service
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#
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trap 'rm -f "$service"' EXIT
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service=$(/bin/mktemp $RUN_PATH/syslog.XXXXXXXX) || exit 1
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(/bin/cat > $service)<<-EOF
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# Warning: Do not edit as this service file has been and will be
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# autogenerated by $0
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[Unit]
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Description=System Logging Service
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Requires=var-run.mount ${network:+$network }syslog.target${klogd:+ $klogd}
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After=var-run.mount${network:+ $network}
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Before=syslog.target${klogd:+ $klogd}
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[Service]
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Type=forking
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Sockets=syslog.socket
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PIDFile=/var/run/${syslog_bin##*/}.pid
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StandardOutput=null
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ExecStartPre=/bin/systemctl stop systemd-kmsg-syslogd.service
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ExecStartPre=-$socksdir/addsockets
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EOF
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#
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# For additional sockets we use further configuration files
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# for rsyslogd and syslog-ng but an envrionment file for syslogd
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#
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case "$SYSLOG_DAEMON" in
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rsyslogd)
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(/bin/cat > ${socksdir#/var}/addsockets)<<-EOF
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#!/bin/sh
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# Warning: Do not edit as this file has been and will be
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# autogenerated by $0
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test -s /etc/sysconfig/syslog && . /etc/sysconfig/syslog
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umask 0022
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> $socks
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for variable in \${!SYSLOGD_ADDITIONAL_SOCKET*}; do
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eval value=\\\$\$variable
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test -z "\$value" && continue
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test ! -d \${value%/*} && continue
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echo "\\\$AddUnixListenSocket \$value"
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done >> $socks
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EOF
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;;
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syslog-ng)
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(/bin/cat > ${socksdir#/var}/addsockets)<<-EOF
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#!/bin/sh
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# Warning: Do not edit as this file has been and will be
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# autogenerated by $0
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test -s /etc/sysconfig/syslog && . /etc/sysconfig/syslog
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umask 0022
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echo 'source chroots {' > $socks
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for variable in \${!SYSLOGD_ADDITIONAL_SOCKET*}; do
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eval value=\\\$\$variable
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test -z "\$value" && continue
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test ! -d \${value%/*} && continue
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echo "unix-dgram(\\"\$value\\");"
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done >> $socks
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echo '};' >> $socks
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EOF
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;;
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*)
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(/bin/cat > ${socksdir#/var}/addsockets)<<-EOF
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#!/bin/sh
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# Warning: Do not edit as this file has been and will be
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# autogenerated by $0
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test -s /etc/sysconfig/syslog && . /etc/sysconfig/syslog
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umask 0022
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echo -n 'ADDITIONAL_SOCKET="' > $socks
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for variable in \${!SYSLOGD_ADDITIONAL_SOCKET*}; do
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eval value=\\\$\$variable
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test -z "\$value" && continue
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test ! -d \${value%/*} && continue
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echo -n "-a \$value "
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done >> $socks
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echo -n '"' >> $socks
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EOF
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echo "Environment=ADDITIONAL_SOCKET=" >>$service
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echo "EnvironmentFile=-$socks" 1>>$service
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params="${params:+$params }\$ADDITIONAL_SOCKET"
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esac
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chmod u+x ${socksdir#/var}/addsockets
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#
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# If klogd.service is required handle reload of syslog.service efficient
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# otherwise we may loose kernel messages or klogd is forwarding kernel
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# messages back to systemd as the creator of the system logging socket
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# and we would get a message loop.
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#
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exec 3>&1 1>>$service
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echo "ExecStart=$syslog_bin $params"
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if test "$start_klogd" != no ; then
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echo "ExecReload=/bin/systemctl kill --signal=TSTP klogd.service"
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fi
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echo "ExecReload=/sbin/killproc -p /var/run/${syslog_bin##*/}.pid -HUP $syslog_bin"
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if test "$start_klogd" != no ; then
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echo "ExecReload=/bin/systemctl kill --signal=CONT klogd.service"
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echo "ExecReload=/bin/systemctl kill --signal=USR2 klogd.service"
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fi
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echo
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echo "[Install]"
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echo "WantedBy=multi-user.target"
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exec 1>&3 3>&-
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if test "$start_klogd" != no -a -x ${klog_bin} ; then
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trap 'rm -f "$service" "$klogserv"' EXIT
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klogserv=$(/bin/mktemp $RUN_PATH/klogd.XXXXXXXX) || exit 1
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(/bin/cat > $klogserv)<<-EOF
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# Warning: Do not edit as this service file has been and will be
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# autogenerated by $0
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[Unit]
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# If klogd.service is started then BindTo=syslog.service
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# within unit section to make it disappear if syslogd dies.
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Description=System Kernel Logging Service
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Requisite=syslog.service
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BindTo=syslog.service
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After=syslog.service
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[Service]
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Type=forking
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StandardOutput=syslog
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StandardError=syslog
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PIDFile=/var/run/${klog_bin##*/}.pid
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Environment=KERNEL_LOGLEVEL=1
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Environment=KLOGD_PARAMS=
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EnvironmentFile=-/etc/sysconfig/syslog
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ExecStart=${klog_bin} -c \$KERNEL_LOGLEVEL \$KLOGD_PARAMS -x
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[Install]
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WantedBy=multi-user.target
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EOF
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fi
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#
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# Now enable the service(s) for multi-user target
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#
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test -d $UNIT_PATH/multi-user.target.wants/ || mkdir -p $UNIT_PATH/multi-user.target.wants
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/bin/mv $service $RUN_PATH/syslog.service
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/bin/ln -sf $RUN_PATH/syslog.service $UNIT_PATH/multi-user.target.wants/
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if test "$start_klogd" != no ; then
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/bin/mv $klogserv $RUN_PATH/klogd.service
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/bin/ln -sf $RUN_PATH/klogd.service $UNIT_PATH/multi-user.target.wants/
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fi
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