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|
#!/bin/bash
# usage ./runlibcgrouptest.sh
# Copyright IBM Corporation. 2008
#
# Author: Sudhir Kumar <skumar@linux.vnet.ibm.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Description: This script runs the the basic tests for testing libcgroup apis.
#
DEBUG=true # for debug messages
FS_MOUNTED=0; # 0 for not mounted, 1 for mounted, 2 for multimounted
MOUNTPOINT="/tmp"; # Just to initialize
TARGET=/dev/cgroup_controllers;
CONTROLLERS=cpu,memory;
debug()
{
# Function parameter is the string to print out
if [ $DEBUG ]
then
echo SH:DBG: $1;
fi
}
umount_fs ()
{
PROC_ENTRY=`cat /proc/mounts|grep cgroup|tr -s [:space:]|cut -d" " -f2`;
# Need to handle multiple mount points ?
if [ -n "$PROC_ENTRY" ] && [ "$PROC_ENTRY" != "$TARGET" ]
then
TARGET=$PROC_ENTRY;
fi;
# Need to take care if there are tasks running in any group ??
# Also need to take care if there are groups in the hierarchy ?
rmdir $TARGET/* 2> /dev/null ;
umount $TARGET;
rmdir $TARGET;
FS_MOUNTED=0;
TARGET=/dev/cgroup_controllers;
echo "Cleanup done";
}
check_mount_fs()
{
CGROUP=`cat /proc/mounts|grep -w cgroup|tr -s [:space:]|cut -d" " -f3`;
if [ "$CGROUP" = "cgroup" ]
then
FS_MOUNTED=1;
else
FS_MOUNTED=0;
fi
}
# Check if kernel is not having any of the controllers enabled
no_controllers()
{
local CPU;
local MEMORY;
if [ -e /proc/cgroups ]
then
CPU=`cat /proc/cgroups|grep -w cpu|cut -f1`;
MEMORY=`cat /proc/cgroups|grep -w memory|cut -f1`;
fi;
if [ -n $CPU ] && [ -n $MEMORY ]
then
CONTROLLERS=$CPU,$MEMORY ;
return 1; # false
elif [ -n $CPU ]
then
CONTROLLERS=$CPU ;
return 1; # false
elif [ -n $MEMORY ]
then
CONTROLLERS=$MEMORY ;
return 1; # false
fi;
# Kernel has no controllers enabled
return 0; # true
}
mount_fs ()
{
if no_controllers
then
echo "Kernel has no controllers enabled";
echo "Recompile your kernel with controllers enabled"
echo "Exiting the tests.....";
exit 1;
fi;
# Proceed further as kernel has controllers support
if [ -e $TARGET ]
then
echo "WARN: $TARGET already exist..overwriting"; # any issue ?
umount_fs;
fi;
mkdir $TARGET;
mount -t cgroup -o $CONTROLLERS cgroup $TARGET; # 2> /dev/null?
if [ $? -ne 0 ]
then
echo "ERROR: Could not mount cgroup filesystem on $TARGET."
echo "Exiting test";
umount_fs;
exit -1;
fi
# Group created earlier may again be visible if not cleaned properly.
# So clean them all
if [ -e $TARGET/group1 ] # first group that is created
then
rmdir $TARGET/* 2>/dev/null
echo "WARN: Earlier groups found and removed...";
fi
FS_MOUNTED=1;
debug "INFO: cgroup filesystem mounted on $TARGET directory"
}
get_mountpoint()
{
# ??? need to handle multiple mount point
MOUNTPOINT=`cat /proc/mounts|grep -w cgroup|tr -s [:space:]| \
cut -d" " -f2`;
debug "mountpoint is $MOUNTPOINT"
}
runtest()
{
MOUNT_INFO=$1;
TEST_EXEC=$2;
if [ -f $TEST_EXEC ]
then
./$TEST_EXEC $MOUNT_INFO $MOUNTPOINT;
if [ $? -ne 0 ]
then
echo Error in running ./$TEST_EXEC
echo Exiting tests.
else
PID=$!;
fi;
else
echo Sources not compiled. please run make;
fi
}
# TestSet01: Run tests without mounting cgroup filesystem
echo;
echo Running first set of testcases;
echo ==============================
FS_MOUNTED=0;
FILE=libcgrouptest01;
check_mount_fs;
# unmount fs if already mounted
if [ $FS_MOUNTED -eq 1 ]
then
umount_fs;
fi;
debug "FS_MOUNTED = $FS_MOUNTED"
runtest $FS_MOUNTED $FILE
wait $PID;
RC=$?;
if [ $RC -ne 0 ]
then
echo Test binary $FILE exited abnormaly with return value $RC;
# Do not exit here. Failure in this case does not imply
# failure in other cases also
fi;
# TestSet02: Run tests with mounting cgroup filesystem
echo;
echo Running second set of testcases;
echo ==============================
FILE=libcgrouptest01;
check_mount_fs;
# mount fs if not already mounted
if [ $FS_MOUNTED -eq 0 ]
then
mount_fs;
fi;
debug "FS_MOUNTED = $FS_MOUNTED"
get_mountpoint;
runtest $FS_MOUNTED $FILE
wait $PID;
RC=$?;
if [ $RC -ne 0 ]
then
echo Test binary $FILE exited abnormaly with return value $RC;
# Same commments as above
fi;
# TestSet03: Run tests with mounting cgroup filesystem at multiple points
echo;
echo Running third set of testcases;
echo ==============================
# To be done
umount_fs;
exit 0;
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