How to: chmod and chown
per-volume filesystem-permissions and ownership

by default:
* all folders are chmod 755
* files are usually chmod 644 (umask-defined)
* user/group is whatever copyparty is running as

this can be configured per-volume:
* volflag `chmod_f` sets file permissions; default=`644` (usually)
* volflag `chmod_d` sets directory permissions; default=`755`
* volflag `uid` sets the owner user-id
* volflag `gid` sets the owner group-id

notes:
* `gid` can only be set to one of the groups which the copyparty process is a member of
* `uid` can only be set if copyparty is running as root (i appreciate your faith)