I agree with your proposal. Indeed, '$here' is referenced in other places where executable files under src are used, including '$here/src/feature', '$here/src/seek_sanity_test', etc.
I have a question about why many test cases execute 'cd /' before the end. For example, generic/124, generic/122, generic/003. I wonder the intention of operation 'cd /'.
在 2019/10/13 20:46, Eryu Guan 写道:
> On Wed, Oct 09, 2019 at 04:27:57PM +0800, Zhihao Cheng wrote:
>> Running generic/192 with overlayfs(Let ubifs as base fs) yields the
>> following output:
>>
>> generic/192 - output mismatch
>> QA output created by 192
>> sleep for 5 seconds
>> test
>> +./common/rc: line 316: src/t_dir_type: No such file or directory
>> delta1 is in range
>> delta2 is in range
>> ...
>>
>> When the use case fails, the call stack in generic/192 is:
>>
>> local unknowns=$(src/t_dir_type $dir u | wc -l) common/rc:316
>> _supports_filetype common/rc:299
>> _overlay_mount common/overlay:52
>> _overlay_test_mount common/overlay:93
>> _test_mount common/rc:407
>> _test_cycle_mount generic/192:50
>>
>> Before _test_cycle_mount() being invoked, generic/192 executed 'cd /'
>> to change work dir from 'xfstests-dev' to '/', so src/t_dir_type was not
>> found.
>>
>> Signed-off-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>
>
> Thanks for the debug! But I think the right fix is to call t_dir_type
> via "$here", i.e.
>
> local unknowns=$($here/src/t_dir_type $dir u | wc -l)
>
> 'here', which points to the top level dir of xfstests source code, is
> defined in every test in test setup, and is guaranteed not to be empty.
>
> Thanks,
> Eryu
>
>> ---
>> tests/generic/192 | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/tests/generic/192 b/tests/generic/192
>> index 50b3d6fd..5550f39e 100755
>> --- a/tests/generic/192
>> +++ b/tests/generic/192
>> @@ -15,7 +15,12 @@ echo "QA output created by $seq"
>> here=`pwd`
>> tmp=/tmp/$$
>> status=1 # failure is the default!
>> -trap "exit \$status" 0 1 2 3 15
>> +trap "_cleanup; exit \$status" 0 1 2 3 15
>> +
>> +_cleanup()
>> +{
>> + cd /
>> +}
>>
>> _access_time()
>> {
>> @@ -46,7 +51,6 @@ sleep $delay # sleep to allow time to move on for access
>> cat $testfile
>> time2=`_access_time $testfile | tee -a $seqres.full`
>>
>> -cd /
>> _test_cycle_mount
>> time3=`_access_time $testfile | tee -a $seqres.full`
>>
>> --
>> 2.13.6
>>
>
> .
>
