Re: IORING_OP_CLOSE fails on fd opened with O_PATH

Jens Axboe
2020-06-08T20:20:00Z

On 6/8/20 5:21 AM, Clay Harris wrote:
> On Sun, May 31 2020 at 08:46:03 -0600, Jens Axboe quoth thus:
>
>> On 5/31/20 6:47 AM, Clay Harris wrote:
>>> Tested on kernel 5.6.14
>>>
>>> $ ./closetest closetest.c
>>>
>>> path closetest.c open on fd 3 with O_RDONLY
>>> ---- io_uring close(3)
>>> ---- ordinary close(3)
>>> ordinary close(3) failed, errno 9: Bad file descriptor
>>>
>>>
>>> $ ./closetest closetest.c opath
>>>
>>> path closetest.c open on fd 3 with O_PATH
>>> ---- io_uring close(3)
>>> io_uring close() failed, errno 9: Bad file descriptor
>>> ---- ordinary close(3)
>>> ordinary close(3) returned 0
>>
>> Can you include the test case, please? Should be an easy fix, but no
>> point rewriting a test case if I can avoid it...
>
> Sure. Here's a cleaned-up test program.
> https://claycon.org/software/io_uring/tests/close_opath.c

Thanks for sending this - but it's GPL v3, I can't take that. I'll
probably just add an O_PATH test case to the existing open-close test
cases.

--
Jens Axboe