adding a handful of linux fanotify data types.

[devnexen]

close #3688

[rustbot]

r? @JohnTitor

rustbot has assigned @JohnTitor. They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

[tgross35]

I think this looks good, but can you confirm that fanotify_event_info_pidfd and fanotify_event_info_error are GNU-only? Also needs a rebase.

[tgross35]

@rustbot author

[devnexen]

I think this looks good, but can you confirm that fanotify_event_info_pidfd and fanotify_event_info_error are GNU-only? Also needs a rebase.

yes I confirm no presence in other libcs

[tgross35]

I think this should be

@rustbot ready

If you have a link to the headers / docs that would be great, trying to get them linked in every PR so we can find them again when needed.

[tgross35]

@rustbot author

[devnexen]

@rustbot review

[bors]

:umbrella: The latest upstream changes (presumably #3480) made this pull request unmergeable. Please resolve the merge conflicts.