bindfs(1) on Linux
The text 184e9c0f74eb, as Debian 8 (Jessie) shipped it.
mount --bind in user-space
Flags it lists
-
--ctime-from-mtime -
--help -
--hide-hard-links -
--multithreaded -
--no-allow-other -
--realistic-permissions -
--version -
-V -
-d -
-f -
-h -
-n -
-o -
-r