crsubs — Apollo

6.0;crsubs (create_subsystem), revision 6.0, 83/04/15
CRSUBS (CREATE_SUBSYSTEM) -- Create a protected subsystem.
usage:  CRSUBS subsystem_name


FORMAT

  CRSUBS subsystem_name


  CRSUBS is used to create a protected subsystem.

  A  protected  subsystem is a set of programs and data files.  The programs are
  called the "managers" of the protected subsystem; the data objects which  they
  manage  are  said  to be "owned" by the subsystem.  Protected subsystems allow
  you to define exactly how a file can be accessed.

  CRSUBS creates a protected subsystem by creating  the  "subsystem  shell"  and
  putting  it  in the directory /SYS/SUBSYS. Once there, the subsystem shell can
  be invoked using the ENSUBS command. The access control list for the directory
  /SYS/SUBSYS determines who can create new subsystems: whoever has 'a' (append)
  rights to the directory will be able to create new subsystems.

  The access control list on the file /SYS/SUBSYS/subsystem_name determines  who
  can enter the subsystem 'subsystem_name'.  Whoever has read and execute rights
  to it can enter the subsystem.  This capability should be restricted generally
  to the creators of the subsystem or to the system administrators.

  For more information on protected subsystems, type:

    $ HELP PROTECTION PROTECTED_SUBSYSTEMS


ARGUMENTS

  subsystem_name
  (required)          Specify  name  of subsystem to be created.  This file will
                     contain the  "subsystem  shell"  and  will  reside  in  the
                     /SYS/SUBSYS directory.


EXAMPLES

  $ crsubs newsubs          Create the subsystem "newsubs".


RELATED TOPICS

  More information is available.  Type:

  - HELP PROTECTION
    for general information about DOMAIN protection mechanisms.

  - HELP PROTECTIONPROTECTED_SUBSYSTEMS
    for detailed information on protected subsystems.

  - HELP SUBS
    for information on displaying or selecting subsystem attributes.

  - HELP ENSUBS
    for information on entering a protected subsystem.

  - HELP XSUBS
    for details about executing a Shell script as a subsystem manager.

  - HELP LOGIN WINDOW
    for information on the attributes of a login window.

  - HELP PROTECTION ACLS
    for information on ACLS.
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