#!/sbin/sh
#Tag 0x00000800
#
# Perform a crash dump save.
# "$Revision: 1.23 $"

#
# Get the crash directory from the savecore.options file (if any).  This
# way we can set up the savecore.options file in any fashion we want.
#
OPTIONS=`cat /etc/config/savecore.options 2> /dev/null`
CRASHDIR=""
if [ ! "${OPTIONS}" = "" ] ; then
	for DIR in ${OPTIONS} ; do
		if [ -d "${DIR}" ] ; then
			CRASHDIR="${DIR}"
		fi
	done
	if [ "${CRASHDIR}" = "" ] ; then
		CRASHDIR="/var/adm/crash"
		OPTIONS="${OPTIONS} ${CRASHDIR}"
	fi
else
	OPTIONS="/var/adm/crash"
	CRASHDIR=${OPTIONS}
fi

#
# Set the current bounds value, if any.
#
BOUNDS=`/sbin/suattr -M dbadmin -c "cat ${CRASHDIR}/bounds" 2> /dev/null`
BOUNDS=${BOUNDS:=0}

#
# Assign filenames appropriately for the files in ${CRASHDIR} so that
# we write out the right reports to the right files.  Note that the .N
# extension is whatever bounds value was assigned to this particular
# system panic or hang.
#
# For completeness, the files that can end up in ${CRASHDIR} are:
#
# fru.N:
#     The FRU analysis of the hardware on the system if the IP type is
#     valid and results are returned.
#
# analysis.N:
#     The full IRIX crash core file report that displays lots of data
#     on what happened when the system crashed.  This report can be
#     analyzed by SGI support personnel in order to try and find out
#     why the system either paniced or hung.
#
# summary.N:
#     The summary information about a crash, primarily used by the
#     availmon information gathering process.  Note that this file
#     is removed as soon as 'availmon' picks it up.
#
# unix.N:
#     A copy of /unix from the time of the system crash.
#
# vmcore.N.comp:
#     A compressed version of the virtual memory at the time of the
#     system crash.  It can be used in combination with unix.N in order
#     to gather details about the machine panic or hang.
#
FRU=${CRASHDIR}/fru.${BOUNDS}
UNIX=${CRASHDIR}/unix.${BOUNDS}
VMCORE=${CRASHDIR}/vmcore.${BOUNDS}.comp
ANA=${CRASHDIR}/analysis.${BOUNDS}
SUM=${CRASHDIR}/summary.${BOUNDS}
CLG=${CRASHDIR}/crashlog.${BOUNDS}

#
# Flag to determine if we need to update the bounds file or not.  This
# is needed when 'savecore' exits with a status of 2, which means that
# there isn't enough disk space for a core dump, but there might be
# enough disk space to save a report.
#
UPDATE_BOUNDS=0

CONFIG=/etc/config
IS_ON=/sbin/chkconfig

if $IS_ON verbose ; then
	LOGGER='/sbin/lfmt -l savecore -s info'
else
	LOGGER='/sbin/lfmt -l savecore -s info -G 1'
fi

NOMSGSEVERITY=1 export NOMSGSEVERITY

#
# If 'savecore' is chkconfiged on, run 'savecore', followed by 'icrash',
# followed by 'fru', checking to make sure that the binaries are installed
# on a given system.  If 'savecore' is chkconfiged off, run 'icrash',
# followed by 'fru', and then clear the dump out of /dev/swap.
#
if $IS_ON savecore || [ ! -f /usr/bin/icrash ] ; then
	/sbin/suattr -M dbadmin -C CAP_MAC_WRITE+ip -c "/usr/etc/savecore ${OPTIONS}"
	if [ $? -eq 1 ] ; then
		exit 1
	elif [ $? -eq 2 ] ; then
		UNIX=/unix
		VMCORE=/dev/swap
		UPDATE_BOUNDS=1
	fi
	if [ -f /usr/bin/icrash ] ; then
		/sbin/suattr -M dbadmin -c "/bin/rm -f ${SUM} ${ANA}"
		/sbin/suattr -M dbadmin -c "/usr/bin/icrash -r -a ${SUM} -w ${ANA} ${UNIX} ${VMCORE}" 2> /dev/null
		if [ $? -eq 0 ] ; then
			${LOGGER} "Created crash report.\n"
			if /sbin/suattr -M dbadmin -c "test -f ${CLG}" ; then
				/sbin/suattr -M dbadmin -c "/bin/rm -f ${CLG}"
			fi
			if [ $UPDATE_BOUNDS -eq 1 ] ; then
				BOUNDS=`expr ${BOUNDS} + 1`
				/sbin/suattr -M dbadmin -c "echo ${BOUNDS} > ${CRASHDIR}/bounds"
			fi
			/sbin/suattr -M dbadmin -c "/bin/rm -f ${FRU}"
			/sbin/suattr -M dbadmin -c "/usr/bin/icrash -S -w ${FRU} -e "fru" ${UNIX} ${VMCORE}" 2> /dev/null
			if [ $? -eq 0 ] ; then
				${LOGGER} "Created fru report.\n"
			else
				/sbin/suattr -M dbadmin -c "/bin/rm -f ${FRU}"
			fi
		else
			/sbin/suattr -M dbadmin -c "/bin/rm -f ${SUM} ${ANA}"
			if /sbin/suattr -M dbadmin -c "test -f ${CLG}" ; then
				/sbin/suattr -M dbadmin -c "/bin/mv ${CLG} ${ANA}"
			fi
		fi
	fi
else
	UNIX=/unix
	VMCORE=/dev/swap
	if [ -f /usr/bin/icrash ] ; then
		/sbin/suattr -M dbadmin -c "/bin/rm -f ${SUM} ${ANA}"
		/sbin/suattr -M dbadmin -c "/usr/bin/icrash -r -a ${SUM} -w ${ANA} ${UNIX} ${VMCORE}" 2> /dev/null
		if [ $? -eq 0 ] ; then
			${LOGGER} "Created crash report.\n"
			BOUNDS=`expr ${BOUNDS} + 1`
			/sbin/suattr -M dbadmin -c "echo ${BOUNDS} > ${CRASHDIR}/bounds"
			/sbin/suattr -M dbadmin -c "/bin/rm -f ${FRU}"
			/sbin/suattr -M dbadmin -c "/usr/bin/icrash -S -w ${FRU} -e "fru" ${UNIX} ${VMCORE}" 2> /dev/null
			if [ $? -eq 0 ] ; then
				${LOGGER} "Created fru report.\n"
			else
				/sbin/suattr -M dbadmin -c "/bin/rm -f ${FRU}"
			fi
		else
			/sbin/suattr -M dbadmin -c "/bin/rm -f ${SUM} ${ANA}"
		fi
		/sbin/suattr -M dbadmin -c "/usr/bin/icrash -c ${UNIX} ${VMCORE}" 2> /dev/null
	fi
fi