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| author | Daniel T. Lee <danieltimlee@gmail.com> | 2019-10-05 17:25:07 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-31 16:43:45 +0100 |
| commit | fa2f23e6a883b20673da93a2368aca71490badb9 (patch) | |
| tree | e89041536ca4ef89d90e19ef17df2fc9265fff3d /samples | |
| parent | f2a96101c5d2e7ea439517774fad1e2f6109333b (diff) | |
| download | linux-stable-fa2f23e6a883b20673da93a2368aca71490badb9.tar.gz linux-stable-fa2f23e6a883b20673da93a2368aca71490badb9.tar.bz2 linux-stable-fa2f23e6a883b20673da93a2368aca71490badb9.zip | |
samples: pktgen: fix proc_cmd command result check logic
[ Upstream commit 3cad8f911575191fb3b81d8ed0e061e30f922223 ]
Currently, proc_cmd is used to dispatch command to 'pg_ctrl', 'pg_thread',
'pg_set'. proc_cmd is designed to check command result with grep the
"Result:", but this might fail since this string is only shown in
'pg_thread' and 'pg_set'.
This commit fixes this logic by grep-ing the "Result:" string only when
the command is not for 'pg_ctrl'.
For clarity of an execution flow, 'errexit' flag has been set.
To cleanup pktgen on exit, trap has been added for EXIT signal.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/pktgen/functions.sh | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh index 4af4046d71be..40873a5d1461 100644 --- a/samples/pktgen/functions.sh +++ b/samples/pktgen/functions.sh @@ -5,6 +5,8 @@ # Author: Jesper Dangaaard Brouer # License: GPL +set -o errexit + ## -- General shell logging cmds -- function err() { local exitcode=$1 @@ -58,6 +60,7 @@ function pg_set() { function proc_cmd() { local result local proc_file=$1 + local status=0 # after shift, the remaining args are contained in $@ shift local proc_ctrl=${PROC_DIR}/$proc_file @@ -73,13 +76,13 @@ function proc_cmd() { echo "cmd: $@ > $proc_ctrl" fi # Quoting of "$@" is important for space expansion - echo "$@" > "$proc_ctrl" - local status=$? + echo "$@" > "$proc_ctrl" || status=$? - result=$(grep "Result: OK:" $proc_ctrl) - # Due to pgctrl, cannot use exit code $? from grep - if [[ "$result" == "" ]]; then - grep "Result:" $proc_ctrl >&2 + if [[ "$proc_file" != "pgctrl" ]]; then + result=$(grep "Result: OK:" $proc_ctrl) || true + if [[ "$result" == "" ]]; then + grep "Result:" $proc_ctrl >&2 + fi fi if (( $status != 0 )); then err 5 "Write error($status) occurred cmd: \"$@ > $proc_ctrl\"" @@ -105,6 +108,8 @@ function pgset() { fi } +[[ $EUID -eq 0 ]] && trap 'pg_ctrl "reset"' EXIT + ## -- General shell tricks -- function root_check_run_with_sudo() { |