Jailed FTP - need to access separate directory outside of jail.
Ubuntu with internal-sftp.
Users are jailed to /data/ftp/%u
User vendor1 needs to access upload directory in vendor2's location (same system).
Vendor2 cannot be able to view Vendor1's data. Vendor1 will be accessing 2's data and writing to that directory as needed.
There are numerous other vendors within /data/ftp and attempting to change match group to a different chrootdirectory doesn't seem to be doing the trick.