Re: IORING_OP_CLOSE fails on fd opened with O_PATH

[Clay Harris <bugs@claycon.org>]

On Mon, Jun 08 2020 at 14:19:56 -0600, Jens Axboe quoth thus:

> 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.

I didn't realize that would be an issue.
I'll change it.  Would you prefer GPL 2, or should I just delete the
license line altogether?

> -- 
> Jens Axboe