Index for Section 4

Alphabetical listing for S

stl_scp(4)
NAME
  stl_scp - setld subset control program conventions

DESCRIPTION
  Each software subset that is distributed for the setld(8) command can have
  an associated subset control program.	 These programs perform the
  application-specific management operations that configure the subset into
  the system.  Because subset control programs must be executed during
  installation to non-native file hierarchies, they must be written in an
  architecture-neutral language.  Because these programs may also be required
  to run while the system is in the single-user run state, the interpreter
  must not use shared libraries.  The use of /sbin/sh is strongly
  recommended.

  As subsets are installed and deleted, they pass through several system
  management states.

  Software is in the NEW state immediately after being extracted from the
  distribution media and verified.  Software in this state is exactly as it
  was prepared for distribution by the software vendor.

  The subset control program is responsible for placing the software in the
  PROTOTYPE state at the request of setld.  Software in this state is
  configured for use at a particular site.  All of the software remains
  sharable but has undergone some level of customization.

  Software becomes runnable on a particular system and ceases to be sharable
  after it has been placed in the CONFIGURED state by the subset control
  program, again at the request of setld.

  Subset control programs are executed by setld to perform specific requested
  operations.  Before executing a subset control program, setld sets the
  environment variable ACT to an action value.	The subset control program is
  expected to inspect this variable and any command-line arguments to
  determine which actions to perform.  The action values, the command-line
  arguments, and the behavior that setld expects are as follows:

  C	  Configure subset

	  The first command-line argument is a configuration message for the
	  subset.  The subset control program can interpret this message as
	  it chooses.  There are two reserved subset messages:

  INSTALL  Perform any management operations required to change the subset
	   from the PROTOTYPE state to the CONFIGURED state.  Subset control
	   programs called to perform this action must assume that the /usr
	   file system is write locked and that the currently visible
	   execution context (contents of /dev/kmem and so forth) is the same
	   as that in which the application will execute.

  DELETE   Perform any management operations required to change the subset
	   from the CONFIGURED state to the PROTOTYPE state.  The execution
	   environment is identical to that for C, INSTALL.

  M	  Menu Request

	  The first argument is one of -l or -x and specifies whether the
	  user is installing or extracting software from the media.

	  Determine if the subset is suitable for presentation to the user in
	  the subset selection menu.  If the subset is to be presented, the
	  subset control program should return exit status 0.  If the subset
	  is not to be presented, the subset control program should return a
	  nonzero status.

  PRE_D	  Prepare for Deletion

	  The subset is about to be deleted from the system.  Perform any
	  management operations required to change the subset from the
	  PROTOTYPE state to the NEW state.  A nonzero return status can be
	  returned to indicate that the subset should not be deleted.

  PRE_L	  Prepare for Load

	  The subset is about to be loaded onto the system.  Verify that the
	  system is ready for the subset to loaded from the installation
	  media.  A nonzero exit status can be returned to indicate that the
	  subset should not be installed.

  POST_D  Post Deletion Cleanup

	  The subset control program should perform any management operations
	  required to return the system to the state that it was in prior to
	  installation of the subset.

  POST_L  Post Load Configuration

	  The subset has been loaded from the media and is on the system in
	  the NEW state.  The subset control program must change the subset
	  from the NEW state to	 the PROTOTYPE state.

  V	  Verify Subset

	  The subset control program should verify the integrity of the
	  subset.  If the subset is provided with an Installation
	  Verification Procedure (IVP) the subset control program should
	  execute the IVP.

RELATED INFORMATION
  Commands:  setld(8)

  Documents:  Guide to Preparing Product Kits