~louis/crashdc/trunk

#! /bin/sh

#

#  crashdc

#

#  Description:  The crashdc init script will execute the crashdc command

#  		 on the last vmcore present in /var/crash/{date} directory.

#

#  Copyright 2020 Hewlett Packard

#

#  chkconfig: - 97 80

#

#  Author:  Louis Bouchard <louis.bouchard@kamikamamak.fr>

if [[ -f /etc/sysconfig/crashdc ]]; then

	. /etc/sysconfig/crashdc

else

        echo "The file /etc/sysconfig/crashdc is absent. Cannot run"

        exit 1

fi

typeset LOGGER="echo "

mode=$(echo $2 | tr '[:lower:]' '[:upper:]')

if ! [[ -z $mode ]]; then

	case "$mode" in

		BASIC) CRASHMODE=BASIC

			;;

		ADVANCED) CRASHMODE=ADVANCED

			;;

		CUSTOM) CRASHMODE=CUSTOM

			if [[ -z $3 ]];then

				echo "CUSTOM : Missing crashdc command file"

				exit 1

			else

				CRASHFILE=$3

			fi

			;;

		*) echo "$mode : Invalid crashdc mode"

			exit 1

			;;

	esac

	echo -n "Forcing crashdc mode to $CRASHMODE"

	if ! [[ -z "$CRASHFILE" ]];then

		echo " with $CRASHFILE"

	else

		echo

	fi

fi

find_distro()

{

relfile=$(ls /etc/*release)

rel=$(cat /etc/*release)

set +a $rel

case "$1" in

	Red)

		rel=rhel

		ver=$7

		ver=${ver%.*}

		echo "${rel}${ver}"

		return 0

		;;

	SUSE)

		rel=sles

		ver=$5

		echo "${rel}${ver}"

		return 0

		;;

	*)

		echo "Invalid or inexistant $relfile"

		exit 1

		;;

esac

}

generate_crashdc()

{

coredir=`ls -rtd ${VMCOREDIR}/*2[0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]-[0-9][0-9]:[0-9][0-9]* | cut -d\  -f2 | tail -1`

	kver=$(uname -r)

	case $(find_distro) in

		rhel[56]) namelist=/usr/lib/debug/lib/modules/${kver}/vmlinux

			;;

		sles10) namelist=/boot/vmlinux-${kver}

			#

			# namelist is delivered compressed 

			# might need to be uncompressed

			#

			if [ -f ${namelist}.gz ];then

				gzip -d -c ${namelist}.gz > $namelist

			else

                        	$LOGGER "Unable to locate $namelist. \

				Verify that the kernel-debuginfo packages are \

				correctly installed or uncompressed."

                        	exit 1

                	fi

			;;

		sles11)

        		namelist=$coredir/vmlinux-$(uname -r)

			if [ -f ${namelist}.gz ];then

				gzip -d -c ${namelist}.gz > $namelist

			else

                        	$LOGGER "Unable to locate $namelist. \

				Verify that the kernel-debuginfo packages are \

				correctly installed or uncompressed."

                        	exit 1

                	fi

        		debuginfo=/usr/lib/debug/boot/vmlinux-$(uname -r).debug

			;;

		*) echo "Unknown distro"

			;;

	esac

if ! [[ -r $namelist ]];then

	$LOGGER "Unable to locate $namelist. Verify that the kernel-debuginfo packages are correctly installed."

	exit 1

fi

case $CRASHMODE in

	BASIC ) CRASHMODE="-b";;

	ADVANCED ) CRASHMODE="-a";;

	CUSTOM ) CRASHMODE="-c $CRASHFILE";;

	* ) echo "Invalid CRASHMODE value in /etc/sysconfig/crashdc : $CRASHMODE"

	exit 1;;

esac

	if [[ -z $debuginfo ]];then

		$CRASHDC $CRASHDCDEBUG $CRASHMODE $namelist $coredir/vmcore $coredir

	else

		$CRASHDC $CRASHDCDEBUG $CRASHMODE $namelist $coredir/vmcore $coredir $debuginfo

	fi

	CRASHDCSUCCESS=$?

	if [[ $CRASHDCSUCCESS == 0 ]];then

		return 0

	else

		return 1

	fi

}

check_status()

{

ls -rtd ${VMCOREDIR}/*2[0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]-[0-9][0-9]:[0-9][0-9]* | while read Line;do

        crashdata=$(ls ${Line}/crash-data*txt 2> /dev/null)

        echo -n $Line :

        if [[ -z $crashdata ]];then

                echo "crash-data file missing"

        else

                echo "crash-data file exists"

        fi

        done

}

case "$1" in

  start)

	last_crash_data=$(check_status | tail -1)

	set -a $last_crash_data

	if [[ $4 == "missing" ]];then

		generate_crashdc

	fi

	;;

  generate|gen)

	generate_crashdc

	;;

  status)

	check_status

	;;

  *)

	echo "Usage: $0 {start|generate|gen} [MODE]"

	exit 1

	;;

esac

exit $?