AUTOPUSH(1M)        RISC/os Reference Manual         AUTOPUSH(1M)



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 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
     # sign.

     -r   This option removes the previous configuration setting
          of the particular major and minor device number speci-
          fied 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



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AUTOPUSH(1M)        RISC/os Reference Manual         AUTOPUSH(1M)



          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)
     STREAMS Programmer's Guide















































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