1 #!/bin/bash 2 3 # Copyright (c) International Business Machines Corp., 2009 4 # Author: Matt Helsley <matthltc (at] 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 27 SETS_DEFAULTS="${CGROUPS_TESTROOT=..} ${TCID=fork_freeze.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" 28 . "${CGROUPS_TESTROOT}/libcgroup_freezer" 29 . "${CGROUPS_TESTROOT}/libltp" 30 declare -r TCID 31 declare -r TST_COUNT 32 declare -r TST_TOTAL 33 export TCID TST_COUNT TST_TOTAL 34 35 running_cgroup_test 36 mount_freezer && { 37 make_sample_cgroup && { 38 start_sample_proc "${CGROUPS_TESTROOT}/timed_forkbomb" 4 && { 39 40 while /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 59 done 60 trap '' ERR 61 cleanup_cgroup_test 62 tst_resm TINFO " Cleaning up $0" 63 64 # We need to kill the sample process. 65 kill_sample_proc ; } 66 rm_sample_cgroup ; } 67 umount_freezer ; } 68 69 # Failsafe cleanup 70 cleanup_freezer || /bin/true 71 72 exit $result 73
