1#!/bin/bash 2 3# Copyright (c) International Business Machines Corp., 2009 4# Author: Matt Helsley <matthltc@us.ibm.com> 5# 6# This library is free software; you can redistribute it and/or 7# modify it under the terms of the GNU Lesser General Public 8# License as published by the Free Software Foundation; either 9# version 2.1 of the License, or (at your option) any later version. 10# 11# This library is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14# Lesser General Public License for more details. 15# 16# You should have received a copy of the GNU Lesser General Public 17# License along with this library; if not, write to the Free Software 18# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19# 20 21# 22# This bash script tests freezer code by starting a long sleep process. 23# The sleep process is frozen. We then thaw the process before it exits. 24# We expect the process to still be alive as we cleanup the test. 25# 26 27SETS_DEFAULTS="${CGROUPS_TESTROOT=..} ${TCID=fork_freeze.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" 28. "${CGROUPS_TESTROOT}/libcgroup_freezer" 29. "${CGROUPS_TESTROOT}/libltp" 30declare -r TCID 31declare -r TST_COUNT 32declare -r TST_TOTAL 33export TCID TST_COUNT TST_TOTAL 34 35running_cgroup_test 36mount_freezer && { 37make_sample_cgroup && { 38start_sample_proc "${CGROUPS_TESTROOT}/timed_forkbomb" 4 && { 39 40while /bin/true ; do 41 trap 'break' ERR 42 assert_cgroup_freezer_state "THAWED" \ 43 "ERROR: cgroup freezer started in non-THAWED state" 44 add_sample_proc_to_cgroup 45 echo "go" >> /proc/$sample_proc/fd/0 46 sleep "0.5s" 47 issue_freeze_cmd 48 wait_until_frozen 49 assert_sample_proc_is_frozen 50 51 issue_thaw_cmd 52 wait_until_thawed 53 assert_sample_proc_not_frozen 54 55 sleep 4 56 57 result=$FINISHED 58 break 59done 60trap '' ERR 61cleanup_cgroup_test 62tst_resm TINFO " Cleaning up $0" 63 64# We need to kill the sample process. 65kill_sample_proc ; } 66rm_sample_cgroup ; } 67umount_freezer ; } 68 69# Failsafe cleanup 70cleanup_freezer || /bin/true 71 72exit $result 73