#!/bin/bash # Copyright (c) International Business Machines Corp., 2009 # Author: Matt Helsley # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # # This bash script tests freezer code by starting a long sleep process. # The sleep process is frozen. We then thaw the process before it exits. # We expect the process to still be alive as we cleanup the test. # SETS_DEFAULTS="${CGROUPS_TESTROOT=..} ${TCID=fork_freeze.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" . "${CGROUPS_TESTROOT}/libcgroup_freezer" . "${CGROUPS_TESTROOT}/libltp" declare -r TCID declare -r TST_COUNT declare -r TST_TOTAL export TCID TST_COUNT TST_TOTAL running_cgroup_test mount_freezer && { make_sample_cgroup && { start_sample_proc "${CGROUPS_TESTROOT}/timed_forkbomb" 4 && { while /bin/true ; do trap 'break' ERR assert_cgroup_freezer_state "THAWED" \ "ERROR: cgroup freezer started in non-THAWED state" add_sample_proc_to_cgroup echo "go" >> /proc/$sample_proc/fd/0 sleep "0.5s" issue_freeze_cmd wait_until_frozen assert_sample_proc_is_frozen issue_thaw_cmd wait_until_thawed assert_sample_proc_not_frozen sleep 4 result=$FINISHED break done trap '' ERR cleanup_cgroup_test tst_resm TINFO " Cleaning up $0" # We need to kill the sample process. kill_sample_proc ; } rm_sample_cgroup ; } umount_freezer ; } # Failsafe cleanup cleanup_freezer || /bin/true exit $result