#!/usr/bin/sh # Copyright © 2007 Kees Cook <kees@outflux.net> # Copyright © 2007-2013 Roger Leigh <rleigh@debian.org> # # schroot 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. # # schroot 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/>. # ##################################################################### set -e . "$SETUP_DATA_DIR/common-data" . "$SETUP_DATA_DIR/common-functions" . "$SETUP_DATA_DIR/common-config" # Wrapper around kill command. Turns errors into # warnings when running in verbose mode, otherwise # it ignores them. # args: parameters for kill kill_proc() { if ! kill "$@" 2>/dev/null; then info "kill $@ failed: process already terminated?" fi } # Kill all processes that were run from within the chroot environment # $1: mount base location do_kill_all() { if [ -z "$1" ]; then fatal "No path for finding stray processes: not reaping processes in chroot" fi info "Killing processes run inside $1" ls /proc | egrep '^[[:digit:]]+$' | while read pid; do # Check if process root are the same device/inode as chroot # root (for efficiency) if [ /proc/"$pid"/root -ef "$1" ]; then # Check if process and chroot root are the same (may be # different even if device/inode match). root=$(readlink /proc/"$pid"/root || true) if [ "$root" = "$1" ]; then exe=$(readlink /proc/"$pid"/exe || true) info "Killing left-over pid $pid (${exe##$1})" info " Sending SIGTERM to pid $pid" kill_proc -TERM "$pid" count=0 max=5 while [ -d /proc/"$pid" ]; do count=$(( $count + 1 )) info " Waiting for pid $pid to shut down... ($count/$max)" sleep 1 # Wait for $max seconds for process to die before -9'ing it if [ "$count" -eq "$max" ]; then info " Sending SIGKILL to pid $pid" kill_proc -KILL "$pid" sleep 1 break fi done fi fi done } if [ $STAGE = "setup-recover" ] || [ $STAGE = "setup-stop" ]; then do_kill_all "$CHROOT_PATH" fi