linux-kernel - [PATCH 4/4] selftests: firmware: add empty string and async tests

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Message-Id: <1449628714-66641-4-git-send-email-computersforpeace@gmail.com>
Date:	Tue,  8 Dec 2015 18:38:34 -0800
From:	Brian Norris <computersforpeace@...il.com>
To:	Shuah Khan <shuahkh@....samsung.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ming Lei <ming.lei@...onical.com>
Cc:	Kees Cook <keescook@...omium.org>,
	Brian Norris <computersforpeace@...il.com>,
	<linux-kernel@...r.kernel.org>, <linux-api@...r.kernel.org>,
	"Luis R. Rodriguez" <mcgrof@...e.com>
Subject: [PATCH 4/4] selftests: firmware: add empty string and async tests

Now that we've added a 'trigger_async_request' knob to test the
request_firmware_nowait() API, let's use it. Also add tests for the
empty ("") string, since there have been a couple errors in that
handling already.

Since we know have real wasy that the sysfs write might fail, let's add
the appropriate check on the 'echo' lines too.

Signed-off-by: Brian Norris <computersforpeace@...il.com>
---
 tools/testing/selftests/firmware/fw_filesystem.sh | 29 ++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh
index c4366dc74e01..e12210e1317c 100755
--- a/tools/testing/selftests/firmware/fw_filesystem.sh
+++ b/tools/testing/selftests/firmware/fw_filesystem.sh
@@ -48,8 +48,21 @@ echo "ABCD0123" >"$FW"
 
 NAME=$(basename "$FW")
 
+if printf '\x00' >"$DIR"/trigger_request; then
+	echo "$0: empty filename should not succeed" >&2
+	exit 1
+fi
+
+if printf '\x00' >"$DIR"/trigger_async_request; 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; 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
@@ -74,4 +87,18 @@ else
 	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
-- 
2.6.0.rc2.230.g3dd15c0

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