1#!/bin/bash 2 3# Copyright (c) International Business Machines Corp., 2008 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 move the sleep process to a THAWED 24# cgroup. We expect moving the sleep process to fail. [While developing 25# the cgroup freezer it was undecided whether moving would fail or it would 26# cause the frozen task to thaw. If it causes the task to thaw then replace the 27# previous sentence with "We expect the moving task to thaw.". This note can 28# be removed once the cgroup freezer is in mainline. ] 29# 30 31. "${CGROUPS_TESTROOT}/libcgroup_freezer" 32SETS_DEFAULTS="${TCID=freeze_move_thaw.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" 33declare -r TCID 34declare -r TST_COUNT 35declare -r TST_TOTAL 36export TCID TST_COUNT TST_TOTAL 37 38running_cgroup_test 39mount_freezer && { 40make_sample_cgroup_named "child2" && { 41make_sample_cgroup && { 42start_sample_proc && { 43 44while /bin/true ; do 45 trap 'break' ERR 46 assert_cgroup_freezer_state "THAWED" \ 47 "ERROR: cgroup freezer started in non-THAWED state" 48 add_sample_proc_to_cgroup 49 50 # FREEZE 51 issue_freeze_cmd 52 wait_until_frozen 53 assert_sample_proc_is_frozen 54 55 # MOVE 56 "${CG_FILE_WRITE}" $sample_proc > "$(dirname $(pwd))/child2/tasks" 2> /dev/null && { 57 result=${result:-1} 58 /bin/false 59 } || { 60 /bin/true 61 } 62 63 # IF the semantics are: the moved task is unfrozen THEN remove everthing 64 # after "2> /dev/null" in the line above (don't redirect stdder and 65 # don't invert the result) 66 # This block of comments can be removed once the cgroup freezer has 67 # been added to mainline. 68 69 sleep 1 70 71 assert_sample_proc_is_frozen 72 assert_sample_proc_in_cgroup 73 assert_sample_proc_not_in_named_cgroup "$(dirname $(pwd))/child2" 74 # IF the semantics are: the moved task is unfrozen THEN replace the 75 # asserts above with these and make the THAW section consistent: 76 # assert_sample_proc_not_in_cgroup # it's in child2 after all 77 # assert_sample_proc_in_named_cgroup "$(dirname $(pwd))/child2" 78 # assert_sample_proc_not_frozen 79 # This block of comments can be removed once the cgroup freezer has 80 # been added to mainline. 81 82 # THAW 83 issue_thaw_cmd 84 wait_until_thawed 85 assert_sample_proc_not_frozen 86 assert_sample_proc_in_cgroup 87 assert_sample_proc_not_in_named_cgroup "$(dirname $(pwd))/child2" 88 # IF the semantics are: the moved task is unfrozen before adding to 89 # child2 THEN 90 # assert_sample_proc_not_frozen 91 # assert_sample_proc_not_in_cgroup 92 # assert_sample_proc_in_named_cgroup "$(dirname $(pwd))/child2" 93 # This block of comments can be removed once the cgroup freezer has 94 # been added to mainline. 95 result=$FINISHED 96 break 97done 98trap '' ERR 99cleanup_cgroup_test 100tst_resm TINFO " Cleaning up $0" 101 102# We may need to stop the sample process because we could have failed before the 103# rest of the test caused it to stop. 104kill_sample_proc ; } 105rm_sample_cgroup ; } 106rm_sample_cgroup_named "child2" ; } 107umount_freezer ; } 108 109# Failsafe cleanup 110cleanup_freezer || /bin/true 111 112exit $result 113 114