linux-kernel - [PATCH v2] selftests: net: tcp_fastopen_backup

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Message-Id: <20190815075826.13210-1-anders.roxell@linaro.org>
Date:   Thu, 15 Aug 2019 09:58:26 +0200
From:   Anders Roxell <anders.roxell@...aro.org>
To:     davem@...emloft.net, shuah@...nel.org
Cc:     netdev@...r.kernel.org, tim.bird@...y.com,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH v2] selftests: net: tcp_fastopen_backup_key.sh: fix shellcheck issue

When running tcp_fastopen_backup_key.sh the following issue was seen in
a busybox environment.
./tcp_fastopen_backup_key.sh: line 33: [: -ne: unary operator expected

Shellcheck showed the following issue.
$ shellcheck tools/testing/selftests/net/tcp_fastopen_backup_key.sh

In tools/testing/selftests/net/tcp_fastopen_backup_key.sh line 33:
        if [ $val -ne 0 ]; then
             ^-- SC2086: Double quote to prevent globbing and word splitting.

Rework to do a string comparison instead.

Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 tools/testing/selftests/net/tcp_fastopen_backup_key.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh
index 41476399e184..f6e65674b83c 100755
--- a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh
+++ b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh
@@ -30,7 +30,7 @@ do_test() {
 	ip netns exec "${NETNS}" ./tcp_fastopen_backup_key "$1"
 	val=$(ip netns exec "${NETNS}" nstat -az | \
 		grep TcpExtTCPFastOpenPassiveFail | awk '{print $2}')
-	if [ $val -ne 0 ]; then
+	if [ "$val" != 0 ]; then
 		echo "FAIL: TcpExtTCPFastOpenPassiveFail non-zero"
 		return 1
 	fi
-- 
2.20.1