The argument for this option is an octal number indicating which permission flags may be set at file creation by a client in a share. The default is 0755, which means the Unix owner can at most read, write, and optionally execute his or her own files, while members of the user's group and others can only read or execute them. If you need to change it for non-executable files, we recommend 0644, or
rw-r--r--. Keep in mind that the execute bits may be used by the server to map certain DOS file attributes, as described earlier. If you're altering the create mask, those bits have to be part of the create mask as well.
