autopush Command

AIX Version 4.3 Commands Reference, Volume 1

autopush Command

Purpose

Configures lists of automatically pushed STREAMS modules.

Syntax

To Configure A List Of Automatically Pushed Streams Modules

autopush -f File

To Remove The Previous Configuration:

autopush -r -M Major -m Minor

To Show The Current Configuration:

autopush -g -M Major -m Minor

Description

The autopush command configures the list of modules to be automatically pushed onto the stream when a device is opened. It can also remove a previous setting or obtain information on a setting.

Flags

-f File	Sets up the autopush configuration for each driver according to the information stored in the specified file. The file specified by the File parameter consists of lines consisting of at least four fields per line. Each field is separated by a character space as shown in the following example: maj_ min_ last_min_ mod1 mod2 . . . modn The first three fields are integers that specify the major device number, minor device number, and last minor device number. The subsequent fields represent the names of modules. If the value of the `min_` field is -1, then all minor devices of a major driver specified by the `maj_` field are configured and the value of the `last_min_` field is ignored. If the value of the `last_min_` field is 0, then only a single minor device is configured. To configure a range of minor devices for a particular major, the value of the `min_` field must be less than the value of the `last_min_` field. The last fields of a line in the autopush file represent the list of module names. Each module name is separated by a character space. The maximum number of modules that can be automatically pushed on a stream is eight, and they are pushed onto the stream in the order they are listed. Comment lines start with a # (pound sign).
-r	Removes the previous configuration setting of a particular major and minor device number.
-g	Obtains the current configuration setting of a particular major and minor device number. It also returns the starting minor device number if the request corresponds to a setting of a range.
-M Major	Specifies a major device number.
-m Minor	Specifies a minor device number.

AIX provides an enhancement to the autopush command that makes it easier to specify major numbers. The name of a driver can be specified instead of its major number anywhere the major number is normally used.

Parameters

File	Contains at least the major device number, minor device number, last minor device number and modules.
Major	Specifies a major device number.
Minor	Specifies a minor device number.

Related Information

The streamio operations.

List of Streams Commands.

STREAMS Overview in AIX Communications Programming Concepts.