To Provide Alternate Text to Display for Each Language

To display per-locale text on the login screen Language menu instead of the default display of the locale name, modify the Dtlogin*language*languageName resource name resource in Xresources:

Dtlogin*En_US*languageName: American

The text American will now be displayed rather than the locale name En_US.

Changing the Login Screen Behavior

To customize the login screen behavior, you can modify resources specified in the Xconfig file.

To modify Xconfig, copy Xconfig from /usr/dt/config to /etc/dt/config. After modifying /etc/dt/config/Xconfig, tell the login server to reread Xconfig by typing:

/usr/dt/bin/dtconfig -reset

This which issues the command kill -HUP login server process ID)

Resources specified in the Xconfig file include:

Dtlogin*authorize--Xaccess file specification

Dtlogin*environment--X server environment

Dtlogin*language--default language

Dtlogin*languageList--language list for login screen Language menu

Dtlogin*resources--Xresources specification

Dtlogin*setup--Xsetup file specification

Dtlogin*startup--Xstartup file specification

Dtlogin*session--Xsession file specification

Dtlogin*failsafeClient--Xfailsafe script specification

Dtlogin*reset--Xreset script specification

Dtlogin*userPath--PATH for Xsession and Xfailsafe

Dtlogin*systemPath--PATH for Xsetup, Xstartup, and Xfailsafe

Dtlogin*systemShell--SHELL for Xsetup, Xstartup, and Xfailsafe

Dtlogin.timeZone--TZ for all scripts

Changing the Login Screen Behavior Per Display

In the examples below, changing an Xconfig resource changes the login screen behavior for all displays. The resources listed with an * (asterisk) can be specified on a per-display basis. This enables you to specify custom login screen behavior for certain displays. To specify a resource for a particular display, the resource is specified as Dtlogin*displayName*resource. For example, if you would like to turn off user based access control for display expo:0 but leave it on for other displays, you would specify:

Dtlogin*expo_0*authorize: False

Note - Any special character in the display name, such as a : (colon) or . (period), is replaced by an _ (underbar).

Changing the X Server Access

By default, the login server allows X server access control on a per user basis and is based on authorization data stored and protected in the HomeDirectory/.Xauthority file. Only users who can read this file are allowed to connect to the X server. Generally, this is the preferred method of X server access control.

An alternative to user-based access control is host-based access control. Using this method, if a host is granted access to the X server, any user on that host is allowed to connect to the X server. Reasons to use host-based control include:

• Older R2 and R3 X clients will not be able to connect to an X server using user-based access control.

• On unsecured networks, a snooper may be able to intercept the authorization data passed between the X client and X server on the network.

  The Xconfig Dtlogin*authorize resource tells the login server to use user-based X server access control. To use host-based access control, change the authorize resource value to False, for example:

  Dtlogin*authorize: False

To Change the X Server Environment

If you want to provide the X server with one or more environment variables and values when started by the login server, you can specify them using the Dtlogin*environment resource in Xconfig. For example:

Dtlogin*environment: VAR1=foo VAR2=bar

will make the variables VAR1 and VAR2 available to the local X server process. These variables will also be exported to the Xsession and Xfailsafe scripts.

To Change the Default Language

When the user logs in to the desktop from the login screen, the user session is run under the locale selected from the Language submenu of the Options menu. If the user does not select a language, the login server default language is used. You can control the value of the default language by setting the Dtlogin*language resource in Xconfig. For example:

Dtlogin*language: Ja_JP

Check your system documentation to determine the languages installed on your system.

To Change the Content of the Login Screen Language Menu

By default the login server creates the login screen Language menu containing a list of all locales installed on the system. When the user selects a locale from the login screen language list, the login server will redisplay the login screen in the selected locale. When the user subsequently logs in, the login server will start a desktop session for the user in that locale.

You can specify your own list of languages by modifying the Dtlogin*languageList resource in Xconfig:

Dtlogin*languageList: En_US De_DE

The login server now displays only En_US and De_DE in the login screen Language menu.

Issuing Commands Before the Login Screen Appears

After the X server has started but before the login screen appears, the login server runs the Xsetup script. Xsetup runs with root authority and issues commands needing to be run before the display of the login screen.

To modify Xsetup, copy Xsetup from /usr/dt/config to /etc/dt/config. The next time the login screen is displayed, the modified Xsetup will be run.

Issuing Commands Before Starting the User Session

After the user enters the user name and password and they are authenticated, but before the user session is started, the login server runs the Xstartup script. Xstartup runs with root authority and issues commands needing to be run as root prior to the user session start.

To modify Xstartup, copy Xstartup from /usr/dt/config to /etc/dt/config. The next time the user logs in, the modified Xstartup will be run.

Starting a Desktop Session

By default, the login server starts the user session by running the Xsession script. Xsession runs with the user's authority and issues commands needed to start the desktop.

Note - Do not directly update the Xsession script.

See Chapter 2, Configuring Session Manager , for information on how to customize the user's desktop session startup.

Starting a Failsafe Session

If the user selects Failsafe Session from the Sessions submenu of the login screen Options menu, the login server runs the Xfailsafe script. Xfailsafe runs with the user's authority and issues commands needed to start a minimal windowing environment, usually a Terminal window and an optional window manager.

To modify Xfailsafe, copy Xfailsafe from /usr/dt/config to /etc/dt/config. The next time the user logs in, the modified Xfailsafe will be run.

After the User's Session Ends

After the user exits the desktop or failsafe session, the login server runs the Xreset script. Xreset runs with root authority and issues commands needing to be run as root after the end of the user's session.

If you wish to modify Xreset, copy Xreset from /usr/dt/config to /etc/dt/config. The next time the user logs in, the modified Xreset will be run.