swtpm/tests/test_getcap

#!/bin/bash

# For the license, see the LICENSE file in the root directory.
#set -x

DIR=$(dirname "$0")
ROOT=${DIR}/..
SWTPM=swtpm_cuse
SWTPM_EXE=$ROOT/src/swtpm/$SWTPM
CUSE_TPM_IOCTL=$ROOT/src/swtpm_ioctl/swtpm_ioctl
MAJOR=255
MINOR=100
VTPM_NAME=$(printf "vtpm-%d-%d" $MAJOR $MINOR)
export TPM_PATH=/tmp
STATE_FILE=$TPM_PATH/tpm-00.permall
VOLATILE_STATE_FILE=$TPM_PATH/tpm-00.volatilestate

if [ "$(id -u)" -ne 0 ]; then
	echo "Need to be root to run this test."
	exit 77
fi

function cleanup()
{
	pid=$(ps aux | grep $SWTPM | grep $VTPM_NAME | gawk '{print $2}')
	if [ -n "$pid" ]; then
		kill -9 $pid
	fi
}

trap "cleanup" EXIT

modprobe cuse

rm -f $STATE_FILE $VOLATILE_STATE_FILE 2>/dev/null

$SWTPM_EXE -n $VTPM_NAME
sleep 0.5
PID=$(ps aux | grep $SWTPM | grep $VTPM_NAME | gawk '{print $2}')

ps aux | grep $SWTPM | grep -v grep

kill -0 $PID
if [ $? -ne 0 ]; then
	echo "Error: CUSE TPM did not start."
	exit 1
fi


# Init the TPM
$CUSE_TPM_IOCTL -i /dev/$VTPM_NAME

sleep 0.5

kill -0 $PID 2>/dev/null
if [ $? -ne 0 ]; then
	echo "Error: CUSE TPM not running anymore after INIT."
	exit 1
fi

# Get the capabilities flags from the TPM
act=$($CUSE_TPM_IOCTL -c /dev/$VTPM_NAME)

kill -0 $PID 2>/dev/null
if [ $? -ne 0 ]; then
	echo "Error: CUSE TPM not running anymore after getting capabilities."
	exit 1
fi

exp="ptm capability is 0x([[:xdigit:]]+)"
if ! [[ "$act" =~ ^${exp}$ ]]; then
	echo "Error: Expected string following regular expression '$exp' from ioctl tool but got '$act'."
	exit 1
fi

$CUSE_TPM_IOCTL -s /dev/$VTPM_NAME

sleep 0.5

kill -0 $PID 2>/dev/null
if [ $? -eq 0 ]; then
	echo "Error: CUSE TPM should not be running anymore."
	exit 1
fi

if [ ! -e $STATE_FILE ]; then
	echo "Error: TPM state file $STATE_FILE does not exist."
	exit 1
fi

echo "OK"

exit 0