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resource descriptors - RAP resource file format


       resource ::= attribute list <blank line>
       attribute list ::= attribute [ ; attribute ]*
       attribute ::= name [ : value [ , value ]* ]
       name, value ::= <printable string>


       Files  with  the .res suffix use a common format to describe resources.
       Generally, a resource represents something that a system  administrator
       might want to manage (for example, devices, backup schedules, file sys-
       tems), or that a user might want to locate.  The encoding of the infor-
       mation  describing  a  resource  is  called  the  resource  descriptor.
       Resource description files are are accessed by  applications  and  ser-
       vices that use the Resource Administration Platform (RAP), but they can
       also be viewed with a normal text editor.

       Each resource descriptor is made up of a list of attributes,  and  ends
       in a blank line. Each attribute in the attribute list has a name and an
       optional list of values. The  attribute  name  is  separated  from  the
       attribute values by a colon (:), attribute values are separated by com-
       mas (,), and attributes are separated by semicolons (;). A comma at the
       end  of  a line continues the line, as does a back-slash (\) character.
       The back-slash character can also be used to escape the special meaning
       of  a  single  character  (such  as comma, semicolon, double quote, and
       back-slash), or the string can be included in quotes.  A line beginning
       with a pound-sign (#) is a comment and the rest of the line is ignored.
       The end of a resource attribute list is marked with a blank line.

       The attribute name and values  can  contain  any  printable  character.
       Upper  and  lower case is ignored on comparisons, and extra white space
       is ignored on both ends but not in the middle of names and values.  For
              Name: testing 1 2;
       will match
              name   :   Testing 1 2 ;
       but is different than
              Name: testing 1     2;

       Below  is  an  example which includes two resources. The first resource
       has eight attributes: type, name, server, schedule,  directive,  group,
       save  set, and remote access.  The group attribute has two values: mar-
       keting and sales.  The remote access attribute has no value.  The  sec-
       ond example includes an attribute that needs quotes because it contains
       a colon.

                       type: NSR client;
                       name: venus;
                     server: mars;
                   schedule: Default;
                  directive: custom;
                      group: marketing, sales;

       Each resource includes the special attribute type.  The type  attribute
       defines  which  other attributes a resource can contain. For example, a
       resource with type printer might include an attribute paper size, while
       in  a  resource  of  type NFS filesystem this attribute makes no sense.
       The type attribute is case  sensitive  and  must  be  used  exectly  as
       described.  For  example,  a  type  "NSR  group" is different from "nsr

       The name attribute is a descriptive name of the object that a  resource
       represents.  In  the  example above, the name of the second resource is
       engineering servers, which describes a group of machines  to  be  saved

       The  administrator  attribute is the list of users that have permission
       to modify this resource. This attribute is inherited  from  the  server
       resource  when  a  new  resource  is  created. The administrator in the
       server  resource  also  controls  who  has  permission  to  create  new
       resources and delete old ones.

       The  resource  identifier is set and used internally by the RAP system.
       It provides a unique identification of each resource, and  although  it
       is sometimes printed like an attribute, it is stored differently.  When
       new resources are created the resource identifier attribute  should  be
       left off. This signals the system that this is a new resource and a new
       identifier will be assigned.


       There are special resources that define the attributes found in a given
       type.  They are called resource type descriptors. Type descriptors have
       the same syntax as  other  resources  except  that  they  have  a  type
       attribute  with the value type and a type name attribute with the value
       of the type they describe.  For example, the resource  type  descriptor
       for type NFS filesystem would have, among its other attributes:
              type:type; type name:NFS filesystem

       Type  descriptors  are  used  internally,  and should normally never be
       stored in files or seen by  administrators.   For  each  of  the  other
       attributes  in  a type descriptor, there are three or more values.  The
       first value gives the base type, the second value gives a list of flags
       separated  by spaces, the third value is a string for on-line help, and
       any subsequent strings are default values.  This  type  information  is
       used by system administration tools to improve the user interface.


       *.res     Files that contain resource descriptors.




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