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      1 #!/bin/bash
      2 
      3 # Copyright (c) International Business Machines  Corp., 2008
      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 . "${CGROUPS_TESTROOT}/libcgroup_freezer"
     28 SETS_DEFAULTS="${TCID=freeze_thaw.sh} ${TST_COUNT=1} ${TST_TOTAL=1}"
     29 declare -r TCID
     30 declare -r TST_COUNT
     31 declare -r TST_TOTAL
     32 export TCID TST_COUNT TST_TOTAL
     33 
     34 running_cgroup_test
     35 mount_freezer && {
     36 make_sample_cgroup && {
     37 start_sample_proc && {
     38 
     39 while /bin/true ; do
     40 	trap 'break' ERR
     41 	assert_cgroup_freezer_state "THAWED" \
     42 			"ERROR: cgroup freezer started in non-THAWED state"
     43 	add_sample_proc_to_cgroup
     44 	issue_freeze_cmd
     45 	wait_until_frozen
     46 	assert_sample_proc_is_frozen
     47 
     48 	issue_thaw_cmd
     49 	wait_until_thawed
     50 	assert_sample_proc_not_frozen
     51 
     52 	result=$FINISHED
     53 	break
     54 done
     55 trap '' ERR
     56 cleanup_cgroup_test
     57 tst_resm TINFO " Cleaning up $0"
     58 
     59 # We need to kill the sample process.
     60 kill_sample_proc ; }
     61 rm_sample_cgroup ; }
     62 umount_freezer ; }
     63 
     64 # Failsafe cleanup
     65 cleanup_freezer || /bin/true
     66 
     67 exit $result
     68