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pseudo(5)

pseudo(5)                        File Formats                        pseudo(5)



NAME
       pseudo - configuration files for pseudo device drivers

DESCRIPTION
       Pseudo  devices  are devices that are implemented entirely in software.
       Drivers for pseudo devices must provide driver configuration  files  to
       inform the system of each pseudo device that should be created.


       Configuration  files for pseudo device drivers must identify the parent
       driver explicitly as pseudo, and must create an integer property called
       instance which is unique to this entry in the configuration file.


       Each  entry in the configuration file creates a prototype devinfo node.
       Each node is assigned an instance number which  is  determined  by  the
       value  of  the  instance  property. This property is only applicable to
       children of the pseudo parent, and is  required  since  pseudo  devices
       have  no  hardware address from which to determine the instance number.
       See driver.conf(5) for further details of configuration file syntax.

EXAMPLES
       Example 1 A sample configuration file.



       Here is a configuration file called ramdisk.conf for  a  pseudo  device
       driver  that  implements a RAM disk. This file creates two nodes called
       "ramdisk". The first entry creates ramdisk node  instance  0,  and  the
       second  creates ramdisk node, instance 1, with the additional disk-size
       property set to 512.


         #
         # Copyright (c) 1993, by Oracle and/or its affiliates.
         #
         #ident  "@(#)ramdisk.conf       1.3     93/06/04 SMI"
         name="ramdisk" parent="pseudo" instance=0;
         name="ramdisk" parent="pseudo" instance=1 disk-size=512;



SEE ALSO
       driver.conf(5), ddi_prop_op(9F)


       Writing Device Drivers in Oracle Solaris 11.4



Oracle Solaris 11.4               15 Jun 1993                        pseudo(5)
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