NAME

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 one 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  fields  following  represent
     the  names  of  modules.  If min_ is -1, then all minor
     devices of a major driver specified by maj_ are config-
     ured  and  the  value  for  last_min_  is  ignored.  If
     last_min_ is 0, then only a single minor device is con-
     figured.   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 # 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 with the -f option).

SEE ALSO

streamio(7)
Programmer's Guide: STREAMS