[LTP] [PATCH v4 1/3] syscalls/fanotify13: new test to verify FAN_REPORT_FID functionality

[Matthew Bobrowski <mbobrowski@mbobrowski.org>]

On Wed, Jun 19, 2019 at 12:23:34AM +0300, Amir Goldstein wrote:
> > +static void do_test(unsigned int number)
> > +{
> > +       unsigned int i;
> > +       int len, fds[ARRAY_SIZE(objects)];
> > +
> > +       struct file_handle *event_file_handle;
> > +       struct fanotify_event_metadata *metadata;
> > +       struct fanotify_event_info_fid *event_fid;
> > +       struct test_case_t *tc = &test_cases[number];
> > +       struct fanotify_mark_type *mark = &tc->mark;
> > +
> > +       tst_res(TINFO,
> > +               "Test #%d: FAN_REPORT_FID with mark flag: %s",
> > +               number, mark->name);
> > +
> > +       fanotify_fd = fanotify_init(FAN_CLASS_NOTIF | FAN_REPORT_FID, O_RDONLY);
> > +       if (fanotify_fd == -1) {
> > +               if (errno == EINVAL) {
> > +                       tst_res(TCONF,
> > +                               "FAN_REPORT_FID not supported by kernel");
> > +                       return;
> > +               }
> > +               tst_brk(TBROK | TERRNO,
> > +                       "fanotify_init(FAN_CLASS_NOTIF | FAN_REPORT_FID, "
> > +                       "O_RDONLY) failed");
> > +       }
> > +
> > +       /* Place marks on a set of objects and setup the expected masks
> > +        * for each event that is expected to be generated
> > +        */
> > +       if (setup_marks(fanotify_fd, tc) != 0)
> > +               return;
> > +
> 
> Sorry, just notices a test bug.
> fanotify_fd needs to be closed before returning from this function,
> because next test case is going to overwrite fanotify_fd.
> do_cleanup() is called only at end of entire test or on tst_brk().
> 
> This needs to be fixed for fanotify14 and fanotify15 as well.

Ah, yes. Thank you Amir and good spotting. I've also updated
TST_TEST_CONF() to TST_TEST_TCONF(). The branch containing these updates
can be found here:
	- https://github.com/matthewbobrowski/ltp/commits/fanotify_dirent	

Please check.
 
> Also, please see my fanotify_dentry branch on github for an extra
> patch to fanotify13 to cover a bug reported by syzbot:
> 
> https://lore.kernel.org/linux-fsdevel/CAOQ4uxhsnOXXVCuOT4p4c_koBMFfprWwdtCPGNGhzprFaJZwRA@mail.gmail.com/T/#t
> 
> Please include this extra patch in your next series posting.

No problem. Applied on top of my fanotify_dirent branch (above).

-- 
Matthew Bobrowski