Inside Macintosh: Devices /

Chapter 1 - Device Manager / Device Manager Reference

Device Manager Functions

Controlling and Monitoring Device Drivers

You can use either the Control or PBControl function to send control information to a device driver, and you can use the Status or PBStatus function to obtain status information from a device driver. The Device Manager also provides the KillIO and PBKillIO functions for terminating all requests in a driver I/O queue.

The PBControl, PBStatus, and PBKillIO functions use the CntrlParam structure, described on page 1-53.

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Subtopics

Control

PBControl

Status

PBStatus

KillIO

PBKillIO