Kernel Properties for Drivers                 removable-media(9P)



NAME
     removable-media - removable media device property

DESCRIPTION
     A device that supports removable media-such as CDROM,  JAZ,
     and  ZIP  drives-and  that  supports  power  management  and
     expects automatic mounting of  the  device  via  the  volume
     manager  should  export  the  boolean (zero length) property
     removable-media. This property enables the  system  to  make
     the  power  state of the device dependent on the power state
     of the frame buffer and monitor. See the power.conf(4)  dis-
     cussion  of  the  device-dependency-property  entry for more
     information.


     Devices that behave like removable devices (such as  PC  ATA
     cards,  where  the  controller and media both are removed at
     the same time) should also export this property.

EXAMPLES
     Example 1 removable-media Entry


     An example of a removable-media entry from the .conf file of
     a driver is shown below.


       # This entry keeps removable media from being powered down unless
       # the console framebuffer and monitor are powered down
       #
       removable-media=1;


     Example 2 Implementation in attach()


     Below is an example of how the entry above would  be  imple-
     mented in the attach(9E) function of the driver.


       xxattach(devinfot *dip, ddiattachcmdt cmd)
            {
            ...
                 if (ddipropcreate(DIDEVTNONE, dip, DIPROPCANSLEP,
                     "removable-media", NUL, 0)) != DIPROPSUCES)
                      goto failed;
            ...
            }


ATRIBUTES




SunOS 5.11          Last change: 15 Jun 2001                    1






Kernel Properties for Drivers                 removable-media(9P)



     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface stability          Committed                   
    


SEE ALSO
     power.conf(4),     pm(7D),      attach(9E),      detach(9E),
     ddipropcreate(9F)


     Writing Device Drivers





































SunOS 5.11          Last change: 15 Jun 2001                    2