Kernel Functions for Drivers                     ldistrategy(9F)



NAME
     ldistrategy - Device strategy request

SYNOPSIS
     #include 

     int ldistrategy(ldihandlet lh,  struct buf *bp);


PARAMETERS
     lh     Layered handle.


     bp     Pointer to the buf(9S) structure.


DESCRIPTION
     The ldistrategy() function passes a strategy request to the
     device  entry  point for the device specified by the layered
     handle. This operation is supported for block devices.

RETURN VALUES
     The  ldistrategy()  function  returns  0  if  the  strategy
     request  has been passed on to the target device. Other pos-
     sible return values are:

     EINVAL     Invalid input parameters.


     ENOTSUP    Operation is not supported for this device.



     Once the request has been passed on to  the  target  devices
     strategy entry point, any further errors will be reported by
     bioerror(9F) and biodone(9F).  See  the  strategy(9E)  entry
     point for more information.

CONTEXT
     This function may be called from user or kernel context.















SunOS 5.11          Last change: 3 June 2003                    1