10.0;crsubs (create_subsystem), revision 1.0, 88/01/21
crsubs (create_subsystem) -- Create a protected subsystem.
crsubs subsystem_name
DESCRIPTION
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
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 x rights to the directory can 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.
ARGUMENTS
subsystem_name (required)
Specify name of subsystem to be created. This file
will contain the subsystem shell and reside in the
/sys/subsys directory.
EXAMPLES
Create the subsystem newsubs.
$ crsubs newsubs
SEE ALSO
More information is available. Type
help protection
For general information about Domain/OS protection
mechanisms
help protection protected_subs
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 log-in window
help protection acls
For information on access control lists.