Linux: Add IN_MASK_CREATE and corresponding error handling in inotify_add_watch
From https://man7.org/linux/man-pages/man7/inotify.7.html
> **IN_MASK_CREATE** (since Linux 4.18)
>
> Watch pathname only if it does not already have a watch associated with it; the error EEXIST results if pathname is already being watched.
1a1b7a3afdRyan Liptak committed on 7/31/2022, 8:00:16 PM· committed by Andrew Kelleyparent075f93f