We have an
Ubuntu 12.04 server set up with
ProFTPd for users to upload files. Each user has their own account and are jailed to their directory.
Normally, everything works fine, they get
644 permissions on created/uploaded files, and
755 permissions on created/uploaded folders.
The problem is, occasionally some files will get uploaded with
600 permissions (or changed after uploading, I'm not sure?), so they are not readable to anyone but the owner. Is there any way to lock/force permissions to
644 on files?
I know I can take away permissions with
umask but I don't want this, I want to stop the user reducing the permissions too much, so they shouldn't be able to go below 644 (rw- r-- r--)