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cups-driverd(8)                                  Apple Inc.                                  cups-driverd(8)



NAME
       cups-driverd - cups driver daemon

SYNOPSIS
       cups-driverd cat ppd-name
       cups-driverd list request_id limit options

DESCRIPTION
       cups-driverd  shows or lists PPD files. It is run in response to CUPS-Add-Modify-Printer or CUPS-Get-Devices CUPS-GetDevices
       Devices requests.  The first form ("cups-driverd cat ppd-name") writes the named PPD file to  stdout.
       The output format is an uncompressed PPD file.

       The  second form lists the available manufacturers or PPD files to stdout as indicated by the options
       argument. The output format is an IPP response message. The request_id argument  is  the  request  ID
       from  the  original IPP request, typically 1. The limit argument is the limit value from the original
       IPP request - 0 means no limit. Finally, the options argument is a space-delimited list of attributes
       ("name=value  name=value ...") that were passed in with the request. Currently cups-driverd looks for
       the ppd-make and requested-attributes attributes and tailors the output accordingly.

DRIVERS
       Drivers can be static PPD files under the  /usr/share/cups/model  directory  or  programs  under  the
       /usr/libexec/cups/driver directory. Static PPD files must conform to the Adobe PPD File Format Speci-fication Specification
       fication version 4.3 and may be compressed using the gzip(1) program. Driver programs must  implement
       the command-line interface shown in the next section.

   DRIVER PROGRAMS
       Driver  programs provide an interface to dynamically-generated PPD files. The following arguments are
       currently defined:

       drivername list
            Lists the supported PPD files to stdout.

       drivername cat ppdname
            Writes the named PPD file to stdout.

   LISTING FILES (drivername list)
       When run with the single argument "list", the program must list the available PPD files it can gener-ate generate
       ate to stdout using the following format:
           "drivername:ppdname" language "make" "make and model" "1284 device id"

       Drivername  is  the  name of the driver program. Ppdname is the name used to select the given driver.
       Language is the locale associated with the default language of the PPD file, typically "en". Make  is
       the  Manufacturer name from the PPD file. Make and model is the NickName name from the PPD file. 1284
       device id is the 1284DeviceId from the PPD file, if any.

   WRITING FILES (drivername cat ppdname)
       When the driver program is run with the "cat ppdname" arguments, it must write the named PPD file  to
       stdout,  uncompressed.  If  the  named PPD file does not exist, the driver program must not write any
       output to stdout and report the error to stderr instead.

   DRIVER ERROR MESSAGES
       Error messages can be relayed back to cupsd by writing them to stderr.  The  following  prefixes  are
       recognized:

       DEBUG: [drivername]
            Debugging messages

       ERROR: [drivername]
            Error messages

       INFO: [drivername]
            Informational messages

SEE ALSO
       cupsd(8), cupsd.conf(5), cupstestppd(1),
       http://localhost:631/help

COPYRIGHT
       Copyright 2007-2009 by Apple Inc.



16 June 2008                                        CUPS                                     cups-driverd(8)