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| author | Kees Cook <keescook@chromium.org> | 2019-05-20 15:37:48 -0700 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2019-05-21 09:24:30 -0600 |
| commit | e8108866cac5058ae5aff5fa601f91bda29128f2 (patch) | |
| tree | fc1775d5db653f41cc738d9949d679362a6d8796 /tools | |
| parent | a20d452a2db7e092a9b214976306a36857b88ade (diff) | |
| download | linux-e8108866cac5058ae5aff5fa601f91bda29128f2.tar.gz linux-e8108866cac5058ae5aff5fa601f91bda29128f2.tar.bz2 linux-e8108866cac5058ae5aff5fa601f91bda29128f2.zip | |
selftests: Remove forced unbuffering for test running
As it turns out, the "stdbuf" command will actually force all
subprocesses into unbuffered output, and some implementations of "echo"
turn into single-character writes, which utterly wrecks writes to /sys
and /proc files.
Instead, drop the "stdbuf" usage, and for any tests that want explicit
flushing between newlines, they'll have to add "fflush(stdout);" as
needed.
Reported-by: Takashi Iwai <tiwai@suse.de>
Fixes: 5c069b6dedef ("selftests: Move test output to diagnostic lines")
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/kselftest/runner.sh | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index eff3ee303d0d..00c9020bdda8 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -24,16 +24,6 @@ tap_prefix() fi } -# If stdbuf is unavailable, we must fall back to line-at-a-time piping. -tap_unbuffer() -{ - if ! which stdbuf >/dev/null ; then - "$@" - else - stdbuf -i0 -o0 -e0 "$@" - fi -} - run_one() { DIR="$1" @@ -54,7 +44,7 @@ run_one() echo "not ok $test_num $TEST_HDR_MSG" else cd `dirname $TEST` > /dev/null - (((((tap_unbuffer ./$BASENAME_TEST 2>&1; echo $? >&3) | + (((((./$BASENAME_TEST 2>&1; echo $? >&3) | tap_prefix >&4) 3>&1) | (read xs; exit $xs)) 4>>"$logfile" && echo "ok $test_num $TEST_HDR_MSG") || |