Manual Pages for UNIX Operating System command usage for man ldi_aread

Kernel Functions for Drivers                        ldi_aread(9F)



NAME
     ldi_aread, ldi_awrite - Issue an asynchronous read or  write
     request to a device

SYNOPSIS
     #include 

     int ldi_aread(ldi_handle_t lh,  struct aio_req *aio_reqp, cred_t *cr);


     int  ldi_awrite(ldi_handle_t lh,  struct aio_req *aio_reqp, cred_t *cr);


PARAMETERS
     lh           Layered handle.


     cr           Pointer to a credential structure.


     aio_reqp     Pointer  to  the  aio_req(9S)  structure   that
                  describes  where  the  data  is to be stored or
                  obtained from.


DESCRIPTION
     The  ldi_awrite()  function  passes  an  asynchronous  write
     request  to  a  device  entry point specified by the layered
     handle. This operation is supported for block and  character
     devices.


     The ldi_aread() function passes an asynchronous read request
     to  a  device  entry  point specified by the layered handle.
     This operation is supported for block and character devices.

RETURN VALUES
     The ldi_awrite() and ldi_aread()  functions  return  0  upon
     success. If a failure occurs before the request is passed on
     to the device, the possible return values are  shown  below.
     Otherwise any other error number may be returned by the dev-
     ice.

     EINVAL     Invalid input parameters.


     ENOTSUP    Operation is not supported for this device.


CONTEXT
     These functions may be called from user context.




SunOS 5.11          Last change: 3 June 2003                    1