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Trusted Extensions Developer's Guide     Oracle Solaris 10 1/13 Information Library
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Document Information


1.  Trusted Extensions APIs and Security Policy

2.  Labels and Clearances

3.  Label Code Examples

4.  Printing and the Label APIs

Printing Labeled Output

Designing a Label-Aware Application

Understanding the Multilevel Printing Service

get_peer_label() Label-Aware Function

Determining Whether the Printing Service Is Running in a Labeled Environment

Understanding the Remote Host Credential

Obtaining the Credential and Remote Host Label

Using the label_to_str() Function

Handling Memory Management

Using the Returned Label String

Validating the Label Request Against the Printer's Label Range

5.  Interprocess Communications

6.  Trusted X Window System

7.  Label Builder APIs

8.  Trusted Web Guard Prototype

9.  Experimental Java Bindings for the Solaris Trusted Extensions Label APIs

A.  Programmer's Reference

B.  Trusted Extensions API Reference


Understanding the Multilevel Printing Service

Because the printing service accepts requests from processes that operate at different labels, printing must be label-aware. Ordinarily, MAC allows access only to resources that are at the same labels at which the user is operating. Even when print requests are issued only at the same label, printing should be label-aware to enable the printed output to display labels on the printed page.

To handle labels, the printing service must perform these essential functions: