autopush(1M)


autopush -- configure lists of automatically pushed STREAMS modules

Synopsis

autopush -f file
autopush -r -M major -m minor
autopush -g -M major -m minor

Description

This command allows you to configure the list of modules to be automatically pushed onto the stream when a device is opened. It can also be used to remove a previous setting or get information on a setting.

The following options apply to autopush:

-f
This option sets up the autopush configuration for each driver according to the information stored in the specified file. An autopush file consists of lines of at least four fields each where the fields are separated by a space as shown below:
   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 remaining fields represent the names of modules. If min_ is -1, then all minor devices of a major driver specified by maj_ are configured and the value for last_min_ is ignored. If last_min_ is 0, then only a single minor device is configured. To configure a range of minor devices for a particular major, min_ must be less than last_min_.

The last fields of a line in the autopush file represent the list of module names where each is separated by a space. The maximum number of modules that can be automatically pushed on a stream is defined to be eight. The modules are pushed in the order they are specified. Comment lines start with a pound sign (#).

-r
This option removes the previous configuration setting of the particular major and minor device number specified with the -M and -m options respectively. If the values of major and minor correspond to a setting of a range of minor devices, where minor matches the first minor device number in the range, the configuration would be removed for the entire range.

-g
This option gets the current configuration setting of a particular major and minor device number specified with the -M and -m options respectively. It will also return the starting minor device number if the request corresponds to a setting of a range (as described for the -f option).

References

streamio(7)
30 January 1998
© 1998 The Santa Cruz Operation, Inc. All rights reserved.