# know so we can be sure we're not accidentally testing the user helper.
set -e
-modprobe test_firmware
-
DIR=/sys/devices/virtual/misc/test_firmware
+TEST_DIR=$(dirname $0)
+
+test_modprobe()
+{
+ if [ ! -d $DIR ]; then
+ echo "$0: $DIR not present"
+ echo "You must have the following enabled in your kernel:"
+ cat $TEST_DIR/config
+ exit 1
+ fi
+}
+
+trap "test_modprobe" EXIT
+
+if [ ! -d $DIR ]; then
+ modprobe test_firmware
+fi
# CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/
# These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that
NAME=$(basename "$FW")
+if printf '\000' >"$DIR"/trigger_request 2> /dev/null; then
+ echo "$0: empty filename should not succeed" >&2
+ exit 1
+fi
+
+if printf '\000' >"$DIR"/trigger_async_request 2> /dev/null; then
+ echo "$0: empty filename should not succeed (async)" >&2
+ exit 1
+fi
+
# Request a firmware that doesn't exist, it should fail.
-echo -n "nope-$NAME" >"$DIR"/trigger_request
+if echo -n "nope-$NAME" >"$DIR"/trigger_request 2> /dev/null; then
+ echo "$0: firmware shouldn't have loaded" >&2
+ exit 1
+fi
if diff -q "$FW" /dev/test_firmware >/dev/null ; then
echo "$0: firmware was not expected to match" >&2
exit 1
echo "$0: filesystem loading works"
fi
+# Try the asynchronous version too
+if ! echo -n "$NAME" >"$DIR"/trigger_async_request ; then
+ echo "$0: could not trigger async request" >&2
+ exit 1
+fi
+
+# Verify the contents are what we expect.
+if ! diff -q "$FW" /dev/test_firmware >/dev/null ; then
+ echo "$0: firmware was not loaded (async)" >&2
+ exit 1
+else
+ echo "$0: async filesystem loading works"
+fi
+
exit 0