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#!/bin/sh
# Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# gcore.sh
# Script to generate a core file of a running program.
# It starts up gdb, attaches to the given PID and invokes the gcore command.
#
if [ "$#" -eq "0" ]
then
echo "usage: gcore [-o filename] pid"
exit 2
fi
# Need to check for -o option, but set default basename to "core".
name=core
if [ "$1" = "-o" ]
then
if [ "$#" -lt "3" ]
then
# Not enough arguments.
echo "usage: gcore [-o filename] pid"
exit 2
fi
name=$2
# Shift over to start of pid list
shift; shift
fi
# Create a temporary file. Use mktemp if available, but cope if it is not.
tmpfile=`mktemp ${name}.XXXXXX 2>/dev/null` || {
tmpfile=${name}.$$
if test -e $tmpfile; then
echo "Could not create temporary file $tmpfile"
exit 1
fi
touch $tmpfile
}
trap "rm -f $tmpfile" EXIT
# Initialise return code.
rc=0
# Loop through pids
for pid in $*
do
# Write gdb script for pid $pid.
cat >>$tmpfile <<EOF
attach $pid
gcore $name.$pid
detach
quit
EOF
gdb -x $tmpfile -batch
if [ -r $name.$pid ] ; then
rc=0
else
echo gcore: failed to create $name.$pid
rc=1
break
fi
done
exit $rc
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