Cross Reference: /solaris-userland/components/rsyslog/files/rsyslog

#!/usr/sbin/sh

#
# Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
#

. /lib/svc/share/smf_include.sh

PKILL=/usr/bin/pkill
DEGRADE_STATE=false
TRANSITION_FILE=/etc/rsyslog.d/TRANSITIONED

function setup
{
    SVC_FMRI=svc:/system/system-log
    SYSLOG_FMRI=${SVC_FMRI}:syslog
    DEFAULT_FMRI=${SVC_FMRI}:default
    OLD_METHOD1="kill -HUP \`cat /var/run/syslog.pid\`"
    OLD_METHOD2="kill -HUP \`cat /system/volatile/syslog.pid\`"
    NEW_METHOD="/usr/sbin/svccfg -s $SVC_FMRI refresh"
    LOGADM_CONF=/etc/logadm.conf

    if [ ! -f /etc/rsyslog.conf ]; then
        echo "/etc/rsyslog.conf not found. Exiting."
        exit $SMF_EXIT_ERR_CONFIG
    fi

    if [ ! -f /usr/lib/rsyslog/rsyslogd ]; then
        echo "/usr/lib/rsyslog/rsyslogd not found. Exiting."
        exit $SMF_EXIT_ERR_CONFIG
    fi

    if [ ! -x /usr/lib/rsyslog/rsyslogd ]; then
        echo "/usr/lib/rsyslog/rsyslogd not executable. Exiting."
        exit $SMF_EXIT_ERR_CONFIG
    fi

    # remove once "system-log/default" has been renamed to "syslog" in ON
    default=$(/usr/bin/svcprop -c -p general/enabled $DEFAULT_FMRI 2> /dev/null)
    if [ "$default" = true ]; then
        echo "$DEFAULT_FMRI conflicts with this instance and must be disabled first. Exiting."
        exit $SMF_EXIT_ERR_CONFIG
    fi

    syslog=$(/usr/bin/svcprop -c -p general/enabled $SYSLOG_FMRI 2> /dev/null)
    if [ "$syslog" = true ]; then
        echo "$SYSLOG_FMRI conflicts with this instance and must be disabled first. Exiting."
        exit $SMF_EXIT_ERR_CONFIG
    fi

    if smf_is_globalzone; then
        #
        # Before [r]syslogd starts, save any messages from
        # previous crash dumps so that messages appear
        # in chronological order.
        #
            # Need to be root to use savecore
        /usr/bin/savecore -m
        if [ -r /etc/dumpadm.conf ]; then
            . /etc/dumpadm.conf
            [ -n "$DUMPADM_DEVICE" -a \
            "$DUMPADM_DEVICE" != swap ] && \
            /usr/bin/savecore -m -f $DUMPADM_DEVICE
        fi
    fi
    if [ ! -f /var/adm/messages ]; then
        /usr/bin/cp /dev/null /var/adm/messages
        /usr/bin/chmod 0644 /var/adm/messages
    fi

    # Convert the old PID-file based post-command for logadm to an SMF-based one.
    TMP_CONF=$(/usr/bin/mktemp /tmp/logadm.conf.XXXXXX)
    /usr/bin/sed -e "s|$OLD_METHOD1|$NEW_METHOD|" \
            -e "s|$OLD_METHOD2|$NEW_METHOD|" $LOGADM_CONF > $TMP_CONF
    /usr/bin/cmp -s $LOGADM_CONF $TMP_CONF
    if [ $? -eq 0 ]; then
        /usr/bin/rm $TMP_CONF
    else
        # In case the umask or group is odd.
        mode=$(/usr/bin/stat -c %a $LOGADM_CONF)
        owner_group=$(/usr/bin/stat -c %U:%G $LOGADM_CONF)
        /usr/bin/mv $TMP_CONF $LOGADM_CONF
        /usr/bin/chmod $mode $LOGADM_CONF
        /usr/bin/chown $owner_group $LOGADM_CONF
    fi
}

function check_update
{
    # only do one transition/degrade
    if [ -f $TRANSITION_FILE ]; then
        return 0
    fi

    # cksum's of /etc/rsyslog.conf
    RSYSLOG_CKSUM_1=3811874833  # s11.1, s11.2, s11.3
    RSYSLOG_CKSUM_2=53416708    # s12
    # cksum's of /etc/syslog.conf
    SYSLOG_CKSUM_1=681212404    # s11, s11.1
    SYSLOG_CKSUM_2=2956275192   # s11.2, s11.3, s12

    CKSUM_ETC_RSYSLOG=`/usr/bin/cksum /etc/rsyslog.conf`
    if [ $? -ne 0 ]; then
        # very abnormal state; bail out
        echo "cksum /etc/rsyslog.conf failed.  Exiting."
        exit $SMF_EXIT_ERR_CONFIG
    else
        CKSUM_ETC_RSYSLOG=`echo $CKSUM_ETC_RSYSLOG | /usr/bin/cut -d' ' -f1`
    fi

    CKSUM_ETC_SYSLOG=`/usr/bin/cksum /etc/syslog.conf`
    if [ $? -ne 0 ]; then
        # Don't care?  Let rsyslog come up normal.
        CKSUM_ETC_SYSLOG=$SYSLOG_CKSUM_2      # unmodified syslog.conf
    else
        CKSUM_ETC_SYSLOG=`echo $CKSUM_ETC_SYSLOG | /usr/bin/cut -d' ' -f1`
    fi

    # if /etc/rsyslog.conf has NOT been modified
    # AND
    # if /etc/syslog.conf has been modified
    # then there are customizations that may need migrating so
    #   exit DEGRADED
    if ([ $CKSUM_ETC_RSYSLOG -eq $RSYSLOG_CKSUM_1 ] || \
        [ $CKSUM_ETC_RSYSLOG -eq $RSYSLOG_CKSUM_2 ])  && \
       ([ $CKSUM_ETC_SYSLOG  -ne $SYSLOG_CKSUM_1 ]  && \
        [ $CKSUM_ETC_SYSLOG  -ne $SYSLOG_CKSUM_2 ]); then
        echo "WARNING:"
        echo "Bringing up rsyslog in a degraded state."
        echo "man rsyslogd"
        echo "And see NOTES for further instructions."
        DEGRADE_STATE=true
    fi
    # and don't transition/degrade again
    echo "#DO NOT REMOVE" > $TRANSITION_FILE
    echo "#Successful transition from syslog to rsyslog completed."\
        >> $TRANSITION_FILE
}

case "$1" in
'start')
    setup
    check_update

    /usr/lib/rsyslog/rsyslogd >/dev/msglog 2>&1
    if [ $? -ne 0 ]; then
        return 1
    fi
    ;;

'stop')
    $PKILL -TERM -f /usr/lib/rsyslog/rsyslogd
    ;;

'refresh')
    $PKILL -HUP -f /usr/lib/rsyslog/rsyslogd
    ;;

*)
    echo "Usage: $0 { start | stop | refresh }"
    exit 1
    ;;

esac

if [ ${DEGRADE_STATE} == true ]; then
    smf_method_exit ${SMF_EXIT_DEGRADED} rsyslog \
        "rsyslog.conf may need customizations"
fi
exit ${SMF_EXIT_OK}