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MPXCALL(2)                    System Calls Manual                   MPXCALL(2)



NAME
       mpxcall - multiplexor and channel interface

SYNOPSIS
       mpxcall(arg1, arg2, arg3, cmd)

DESCRIPTION
       Mpxcall  supplies  a primitive interface to the kernel used by the rou-
       tines listed below.  Each routine that uses mpxcall passes  an  integer
       cmd  as  the  fourth argument.  These are defined in /usr/include/mx.h.
       Mpxcall always returns an integer which is to be interpreted in  accor-
       dance with the definition of cmd.

SEE ALSO
       group(2),   join(2),   extract(2),   connect(2),   chan(2),  attach(2),
       detach(2)

DIAGNOSTICS
       The value -1 is returned on error.



                                                                    MPXCALL(2)