| Message ID | 20190814214948.5571-1-anders.roxell@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | selftests: net: tcp_fastopen_backup_key.sh: fix shellcheck issue | expand |
> -----Original Message----- > From: Anders Roxell > > 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 [ $val -ne 0 ]; then > ^-- SC2086: Double quote to prevent globbing and word splitting. > > Rework to add double quotes around the variable 'val' that shellcheck > recommends. > > Signed-off-by: Anders Roxell <anders.roxell@linaro.org> > --- > tools/testing/selftests/net/tcp_fastopen_backup_key.sh | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > index 41476399e184..ba5ec3eb314e 100755 > --- a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > +++ b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > @@ -30,7 +30,7 @@ do_test() { > ip netns exec "${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" -ne 0 ]; then Did you test this in the failing environment? With a busybox shell, I get: $ [ "" -ne 0 ] sh: bad number You might need to explicitly check for empty string here, or switch to a string comparison instead: if [ "$val" != 0 ]; then -- Tim > echo "FAIL: TcpExtTCPFastOpenPassiveFail non-zero" > return 1 > fi > -- > 2.20.1
On Thu, 15 Aug 2019 at 01:35, <Tim.Bird@sony.com> wrote: > > > > > -----Original Message----- > > From: Anders Roxell > > > > 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 [ $val -ne 0 ]; then > > ^-- SC2086: Double quote to prevent globbing and word splitting. > > > > Rework to add double quotes around the variable 'val' that shellcheck > > recommends. > > > > Signed-off-by: Anders Roxell <anders.roxell@linaro.org> > > --- > > tools/testing/selftests/net/tcp_fastopen_backup_key.sh | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > > b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > > index 41476399e184..ba5ec3eb314e 100755 > > --- a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > > +++ b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > > @@ -30,7 +30,7 @@ do_test() { > > ip netns exec "${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" -ne 0 ]; then > > Did you test this in the failing environment? I thought I did that but the environment wasn't exactly the same. =/ > > With a busybox shell, I get: > $ [ "" -ne 0 ] > sh: bad number > > You might need to explicitly check for empty string here, or switch to a string comparison instead: > if [ "$val" != 0 ]; then I'll do that instead. Sending out a v2 shortly. Cheers, Anders > > -- Tim > > > echo "FAIL: TcpExtTCPFastOpenPassiveFail non-zero" > > return 1 > > fi > > -- > > 2.20.1 >
diff --git a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh index 41476399e184..ba5ec3eb314e 100755 --- a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh +++ b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh @@ -30,7 +30,7 @@ do_test() { ip netns exec "${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" -ne 0 ]; then echo "FAIL: TcpExtTCPFastOpenPassiveFail non-zero" return 1 fi
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 add double quotes around the variable 'val' that shellcheck recommends. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> --- tools/testing/selftests/net/tcp_fastopen_backup_key.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)