Using File Modes as a Typing Criteria

Use the MODE field to specify the required permissions.

Mode criteria are usually used in combination with name-based, location-based, or content-based data typing. They allow you to limit a data type to a file or directory, or to specify the required read, write, and execute permissions.

The MODE field can include logical operators (Table 13-4) and characters (Table 13-5).

Table 13-4 MODE Field Logical Operators and Descriptions

Operator	Description
!	Logical operator NOT
&	Logical operator AND
|	Logical OR

Table 13-5 MODE Field Characters and Descriptions

Character	Description
f	The data type applies only to files
d	The data type applies only to directories
r	The file is readable by any user
w	The file is writable by any user
x	The file is executable by any user
l	The file is a link

The default for a particular mode is that the mode does not matter.

Examples

• The following mode fields restrict the data type as described:

  f&!w--read-only files

  !w--read-only files and directories

  f&x--executable files

  f&r&x--files that are both writable and executable

  x|!w--files that are executable or read-only

• The following data type definition creates an data type for read-only, non-executable files whose file names follow the naming convention *.doc. It assumes that a View action has been defined for the data type.

  	DATA_ATTRIBUTES ReadOnlyDocument
   	{
   		ICON						read_only
   		DESCRIPTION				This document is not writable. Double- \
   									clicking runs your editor with a \
   									read-only copy of the file.
   		ACTIONS					View
   	}
  
   	DATA_CRITERIA ReadOnlyDocument_Criteria
   	{
   		NAME_PATTERN						*.doc
   		MODE									!d&!x&!w
   		DATA_ATTRIBUTES_NAME			ReadOnlyDocument
   	}