tests: Use mode= to set file mode bits in test and check them

Use the mode= parameter of the TPM's state file and a unix
socket to have swtpm set the file mode bits and check that
they are set as expected.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

tests/common

@@ -615,6 +615,19 @@ function get_filesize()
 	fi
 }
 
+# Get the file mode bits in octal format
+#
+# @1: filename
+function get_filemode()
+{
+	if [[ "$(uname -s)" =~ (Linux|CYGWIN_NT-) ]]; then
+		stat -c%a $1
+	else
+		# BSDs
+		stat -f%Lp $1
+	fi
+}
+
 # Get the SHA1 of a file
 #
 # @1: filename

tests/test_commandline

@@ -66,10 +66,11 @@ function wait_port_closed()
 }
 
 # Test 1: test port and directory command line parameters; use log level 20
+FILEMODE=641
 
 $SWTPM_EXE socket \
 	-p $PORT \
-	--tpmstate dir=$TPMDIR \
+	--tpmstate dir=$TPMDIR,mode=$FILEMODE \
 	--pid file=$PID_FILE \
 	--log file=$LOG_FILE,level=20 \
 	--flags not-need-init &
@@ -95,12 +96,19 @@ if [ "$PIDF" != "$PID" ]; then
 fi
 
 ${SWTPM_BIOS} &>/dev/null
-
 if [ $? -ne 0 ]; then
 	echo "Test 1 failed: tpm_bios did not work"
 	exit 1
 fi
 
+filemode=$(get_filemode ${TPMDIR}/tpm-00.permall)
+if [ "$filemode" != "$FILEMODE" ]; then
+	echo "Filemode bits are wrong"
+	echo "Expected: $FILEMODE"
+	echo "Actual  : $filemode"
+	exit 1
+fi
+
 check_logfile_patterns_level_20 $LOG_FILE
 rm -f $LOG_FILE
 

tests/test_ctrlchannel

@@ -31,6 +31,12 @@ source ${TESTDIR}/common
 
 # Test 1: test the control channel on the socket tpm
 
+if [[ "$(uname -s)" =~ CYGWIN_NT- ]]; then
+	FILEMODE=661
+else
+	FILEMODE=621
+fi
+
 case "$(uname -s)" in
 FreeBSD)
 	kldload pty
@@ -50,7 +56,7 @@ $SWTPM_EXE socket \
 	--fd 100 \
 	--tpmstate dir=$TPMDIR \
 	--pid file=$PID_FILE \
-	--ctrl type=unixio,path=$SWTPM_CTRL_UNIX_PATH \
+	--ctrl type=unixio,path=$SWTPM_CTRL_UNIX_PATH,mode=$FILEMODE \
 	--log file=$LOG_FILE,level=20 &
 
 exec 100>&-
@@ -76,6 +82,14 @@ if [ "$res" != "$exp" ]; then
 	exit 1
 fi
 
+filemode=$(get_filemode $SWTPM_CTRL_UNIX_PATH)
+if [ "$filemode" != "$FILEMODE" ]; then
+	echo "Filemode bits are wrong"
+	echo "Expected: $FILEMODE"
+	echo "Actual  : $filemode"
+	exit 1
+fi
+
 # Send TPM_Init to the TPM: CMD_INIT = 0x00 00 00 02 + flags
 res="$(swtpm_ctrl_tx ${SWTPM_INTERFACE} '\x00\x00\x00\x02\x00\x00\x00\x00')"
 exp=" 00 00 00 00"

tests/test_tpm2_ctrlchannel2

@@ -31,13 +31,14 @@ function cleanup()
 
 # Test 1: test the control channel on the chardev tpm
 
+FILEMODE=621
 # use a pseudo terminal
 exec 100<>/dev/ptmx
 $SWTPM_EXE chardev \
 	--fd 100 \
 	--tpmstate dir=$TPMDIR \
 	--pid file=$PID_FILE \
-	--ctrl type=unixio,path=$SOCK_PATH \
+	--ctrl type=unixio,path=$SOCK_PATH,mode=$FILEMODE \
 	--tpm2 &
 
 if wait_for_file $PID_FILE 3; then
@@ -54,6 +55,14 @@ if [ $? -ne 0 ]; then
 	exit 1
 fi
 
+filemode=$(get_filemode $SOCK_PATH)
+if [ "$filemode" != "$FILEMODE" ]; then
+	echo "Filemode bits are wrong"
+	echo "Expected: $FILEMODE"
+	echo "Actual  : $filemode"
+	exit 1
+fi
+
 exp="ptm capability is 0x([[:xdigit:]]+)"
 if ! [[ "$act" =~ ^${exp}$ ]]; then
 	echo "Error: Expected string following regular expression '$exp' from ioctl tool but got '$act'."