| Current File : //usr/bin/gcore |
#!/bin/sh
# Copyright (C) 2003-2013 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/>.
#
# Script to generate a core file of a running program.
# It starts up gdb, attaches to the given PID and invokes the gcore command.
#
# Need to check for -o option, but set default basename to "core".
name=core
# When the -a option is present, this may hold additional commands
# to ensure gdb dumps all mappings (OS dependent).
dump_all_cmds=()
while getopts :ao: opt; do
case $opt in
a)
case $OSTYPE in
linux*)
dump_all_cmds=("-ex" "set use-coredump-filter off")
dump_all_cmds+=("-ex" "set dump-excluded-mappings on")
;;
esac
;;
o)
name=$OPTARG
;;
*)
echo "usage: gcore [-a] [-o filename] pid"
exit 2
;;
esac
done
shift $((OPTIND-1))
if [ "$#" -eq "0" ]
then
echo "usage: gcore [-a] [-o filename] pid"
exit 2
fi
# Initialise return code.
rc=0
# Loop through pids
for pid in $*
do
# `</dev/null' to avoid touching interactive terminal if it is
# available but not accessible as GDB would get stopped on SIGTTIN.
gdb </dev/null --nx --batch \
-ex "set pagination off" -ex "set height 0" -ex "set width 0" \
"${dump_all_cmds[@]}" \
-ex "attach $pid" -ex "gcore $name.$pid" -ex detach -ex quit
if [ -r $name.$pid ] ; then
rc=0
else
echo "gcore: failed to create $name.$pid"
rc=1
break
fi
done
exit $rc