@Guspaz
Thanks I think I understood what you meant, but ..
In fact the symlink seems like a good solution except the permissions do not allow the foreign user to read and write the symlinked folder / files.
Also if I use mount the the originating folder becomes inaccessible to the original owner. (using mount -t).
So here is what I have (bearing in mind that these are sftp jails - except for "myuser".
Quote:
myuser@linode:/home$ ls -l
drwxr-xr-x 10 root root 4096 2011-04-27 18:27 user1
drwxr-xr-x 9 myuser myuser 4096 2011-04-11 12:01 myuser
drwxr-xr-x 8 root root 4096 2011-05-10 12:04 user2
drwxr-xr-x 3 root root 4096 2011-05-10 18:28 user3
drwxr-xr-x 4 root root 4096 2011-03-06 10:32 user4
"user1" by definition cannot even see the "user2" directory.
However I would like "user1" to be able to see and download/upload certain specified directories / files belonging to "user2"
Hope that better explains what I am trying to do.