z/VM: CP Commands and Utilities Reference - z/VM - IBM

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Usage Notes
Note: # refers to the logical-line-end character currently in effect for the virtual
machine in which the AUTOLOG command is being used.
If you are using CMS and you specify console_input_data with the
logical line-end character (#) on the command line, CMS truncates the
AUTOLOG command at the first logical line-end character. To prevent
this, enter a logical escape character before the logical line-end
character, or enter #CP, where # is your logical line-end character, before
the AUTOLOG command itself.
1. The virtual machine that you log on using AUTOLOG must have an IPL
statement in its system directory unless it is a CF Service Machine (has
OPTION CFVM in the directory).
AUTOLOG
2. A virtual machine is allowed to be logged on with AUTOLOG even though the
number of users already logged on is equal to or greater than the maximum
allowed by the MAXUSERS operand of the FEATURES system configuration
statement or by the SET MAXUSERS command if the user directory for the
virtual machine was created using the IGNMAXU operand of the OPTION
directory control statement.
3. The virtual machine you log on using AUTOLOG operates in disconnect mode.
The same restraints that apply to any disconnected machine apply to virtual
machines logged on with AUTOLOG.
4. The password suppression setting for the AUTOLOG command is controlled by
the PASSWORDS_ON_CMDs operand of the FEATURES system configuration
statement or by the SET PASSWORD command.
5. CP disables the AUTOLOG command for the rest of a user logon session if the
user enters too many incorrect passwords while trying to logon another user ID
automatically. The initial system limit depends on how the JOURNALING
system configuration statement is coded. See z/VM: CP Planning and
Administration for more information. Use the QUERY CMDLIMIT command to
see the system limit value set by your installation.
6. A secondary user ID may be specified on the user system directory CONSOLE
statement. All console messages are routed to the secondary user ID, if it is
functional, after the user is automatically logged on.
7. If you use AUTOLOG in an EXEC or module, you must put the password in
the command or set the DIAGNOSE X'08' control bit to indicate that you want
a prompt. See z/VM: CP Programming Services for details about DIAGNOSE
X'08'.
8. There is no password authorization for an AUTOLOG of a userid defined with
the NOPASS operand, unless an Extended Security Manager (ESM) is
installed. When an ESM is installed, password authorization may be required
despite the NOPASS operand. Refer to documentation provided by your ESM
for more information.
9. CP typically presents console_input_data to CMS through an interruption
sequence before a CMS program has requested a console read. CMS places
the #console_input_data into its terminal input queue in anticipation of some
subsequent request to read from the console. This subsequent request is
usually the PARSE EXTERNAL instruction in the SYSPROF EXEC, unless the
SYSPROF EXEC is bypassed or the AUTOCR parameter was used at IPL
time. The EXTERNALS() VM REXX built-in function can be used to test for the
existence of console_input_data before the PARSE EXTERNAL is issued.
Chapter 2. CP Commands 39