shellcheck recently helped to prevent issues. It is then good to fix the other harmless issues in order to spot "real" ones later.
Here, two categories of warnings are now ignored:
- SC2317: Command appears to be unreachable. The cleanup() function is invoked indirectly via the EXIT trap.
- SC2086: Double quote to prevent globbing and word splitting. This is recommended, but the current usage is correct and there is no need to do all these modifications to be compliant with this rule.
For the modifications:
- SC2034: ksft_skip appears unused. - SC2046: Quote '$(get_msk_inuse)' to prevent word splitting. - SC2006: Use $(...) notation instead of legacy backticks `...`.
Now this script is shellcheck (0.9.0) compliant. We can easily spot new issues.
Reviewed-by: Mat Martineau martineau@kernel.org Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org --- tools/testing/selftests/net/mptcp/diag.sh | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/net/mptcp/diag.sh b/tools/testing/selftests/net/mptcp/diag.sh index 0ee93915bccb..d8f080f934ac 100755 --- a/tools/testing/selftests/net/mptcp/diag.sh +++ b/tools/testing/selftests/net/mptcp/diag.sh @@ -1,10 +1,14 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0
+# Double quotes to prevent globbing and word splitting is recommended in new +# code but we accept it, especially because there were too many before having +# address all other issues detected by shellcheck. +#shellcheck disable=SC2086 + . "$(dirname "${0}")/mptcp_lib.sh"
ns="" -ksft_skip=4 test_cnt=1 timeout_poll=30 timeout_test=$((timeout_poll * 2 + 1)) @@ -24,6 +28,8 @@ flush_pids() done }
+# This function is used in the cleanup trap +#shellcheck disable=SC2317 cleanup() { ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGKILL &>/dev/null @@ -174,7 +180,7 @@ chk_msk_inuse() expected=$((expected + listen_nr))
for _ in $(seq 10); do - if [ $(get_msk_inuse) -eq $expected ];then + if [ "$(get_msk_inuse)" -eq $expected ]; then break fi sleep 0.1 @@ -260,7 +266,7 @@ chk_msk_inuse 0 "1->0" chk_msk_cestab 0 "1->0"
NR_CLIENTS=100 -for I in `seq 1 $NR_CLIENTS`; do +for I in $(seq 1 $NR_CLIENTS); do echo "a" | \ timeout ${timeout_test} \ ip netns exec $ns \ @@ -269,7 +275,7 @@ for I in `seq 1 $NR_CLIENTS`; do done mptcp_lib_wait_local_port_listen $ns $((NR_CLIENTS + 10001))
-for I in `seq 1 $NR_CLIENTS`; do +for I in $(seq 1 $NR_CLIENTS); do echo "b" | \ timeout ${timeout_test} \ ip netns exec $ns \