The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM

User IDs The password required to logon with
Minidisks Separate passwords for read access, write access and multi-write access
Both types of passwords should be modified. This can be done using the CHPW610 XEDIT
macro described in the next section.
4.9.1 Changing passwords in USER DIRECT
Changing the passwords can be done manually in XEDIT. However, this is both tedious and
error-prone. So an XEDIT macro named CHPW610 XEDIT has been included with this book.
The source code is in Appendix B.2.2, “The CHPW610 XEDIT macro” on page 248.
This macro will change all z/VM passwords to the same value, which may still not be
adequate security given the different function of the various user IDs. If you want different
passwords, you have to modify the USER DIRECT file manually, either with or without using the
CHPW52 XEDIT macro.
To modify all user ID and minidisk passwords to the same value, perform the following steps.
► Logon to MAINT.
► Link and access the LNXMAINT 192 disk to pick up the CHPW610 XEDIT macro:
==> vmlink lnxmaint 192
DMSVML2060I LNXMAINT 192 linked as 0120 file mode Z
► Make a backup copy of the USER DIRECT file and first be sure the password that you want
to use is not a string in the file. For example if you want to change all passwords to lnx4vm,
then do the following:
==> copy user direct c = direwrks = (oldd
==> x user direct c
====> /lnx4vm
DMSXDC546E Target not found
====> quit
The Target not found message shows that the string lnx4vm is not used in the USER
DIRECT file, so it is a good candidate for a password.
► Edit the USER DIRECT file with a parameter of (profile chpw610) followed by the new
password. Rather than invoking the default profile of PROFILE XEDIT, this command will
invoke the XEDIT macro named CHPW610 XEDIT and pass it the new password. For
example, to change all passwords to lnx4vm, enter the following command:
==> x user direct c (profile chpw610) lnx4vm
Changing all passwords to: LNX4VM
DMSXCG517I 1 occurrence(s) changed on 1 line(s)
DMSXCG517I 1 occurrence(s) changed on 1 line(s)
...
► When the profile finishes you are left in the XEDIT session with all passwords modified.
You may wish to first examine the changes. Then save the changes with the FILE
subcommand:
====> file
► Bring the changes online with the DIRECTXA command:
==> directxa user
z/VM USER DIRECTORY CREATION PROGRAM - VERSION 6 RELEASE 1.0
EOJ DIRECTORY UPDATED AND ON LINE
Chapter 4. Installing and configuring z/VM 63