From b4fe9fec51ef48011f11c2da4099f0b530449c92 Mon Sep 17 00:00:00 2001 From: KP Singh Date: Fri, 11 Dec 2020 01:07:11 +0000 Subject: [PATCH] selftests/bpf: Silence ima_setup.sh when not running in verbose mode. Currently, ima_setup.sh spews outputs from commands like mkfs and dd on the terminal without taking into account the verbosity level of the test framework. Update test_progs to set the environment variable SELFTESTS_VERBOSE=1 when a verbose output is requested. This environment variable is then used by ima_setup.sh (and can be used by other similar scripts) to obey the verbosity level of the test harness without needing to re-implement command line options for verbosity. In "silent" mode, the script saves the output to a temporary file, the contents of which are echoed back to stderr when the script encounters an error. Fixes: 34b82d3ac105 ("bpf: Add a selftest for bpf_ima_inode_hash") Reported-by: Andrii Nakryiko Suggested-by: Andrii Nakryiko Signed-off-by: KP Singh Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20201211010711.3716917-1-kpsingh@kernel.org --- tools/testing/selftests/bpf/ima_setup.sh | 24 ++++++++++++++++++++++++ tools/testing/selftests/bpf/test_progs.c | 10 ++++++++++ 2 files changed, 34 insertions(+) diff --git a/tools/testing/selftests/bpf/ima_setup.sh b/tools/testing/selftests/bpf/ima_setup.sh index 2bfc646..8e62581 100755 --- a/tools/testing/selftests/bpf/ima_setup.sh +++ b/tools/testing/selftests/bpf/ima_setup.sh @@ -7,6 +7,8 @@ set -o pipefail IMA_POLICY_FILE="/sys/kernel/security/ima/policy" TEST_BINARY="/bin/true" +VERBOSE="${SELFTESTS_VERBOSE:=0}" +LOG_FILE="$(mktemp /tmp/ima_setup.XXXX.log)" usage() { @@ -75,6 +77,19 @@ run() exec "${copied_bin_path}" } +catch() +{ + local exit_code="$1" + local log_file="$2" + + if [[ "${exit_code}" -ne 0 ]]; then + cat "${log_file}" >&3 + fi + + rm -f "${log_file}" + exit ${exit_code} +} + main() { [[ $# -ne 2 ]] && usage @@ -96,4 +111,13 @@ main() fi } +trap 'catch "$?" "${LOG_FILE}"' EXIT + +if [[ "${VERBOSE}" -eq 0 ]]; then + # Save the stderr to 3 so that we can output back to + # it incase of an error. + exec 3>&2 1>"${LOG_FILE}" 2>&1 +fi + main "$@" +rm -f "${LOG_FILE}" diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index 5ef081b..7d077d4 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -587,6 +587,16 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state) return -EINVAL; } } + + if (env->verbosity > VERBOSE_NONE) { + if (setenv("SELFTESTS_VERBOSE", "1", 1) == -1) { + fprintf(stderr, + "Unable to setenv SELFTESTS_VERBOSE=1 (errno=%d)", + errno); + return -1; + } + } + break; case ARG_GET_TEST_CNT: env->get_test_cnt = true; -- 2.7.4