ldi_strategy(9f) [opensolaris man page]

ldi_strategy(9F)					   Kernel Functions for Drivers 					  ldi_strategy(9F)

NAME

       ldi_strategy - Device strategy request

SYNOPSIS

       #include <sys/sunldi.h>

       int ldi_strategy(ldi_handle_t lh,  struct buf *bp);

PARAMETERS

       lh     Layered handle.

       bp     Pointer to the buf(9S) structure.

DESCRIPTION

       The ldi_strategy() function passes a strategy request to the device entry point for the device specified by the layered handle. This opera-
       tion is supported for block devices.

RETURN VALUES

       The ldi_strategy() function returns 0 if the strategy request has been passed on to the target device. Other possible 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							    3 June 2003 						  ldi_strategy(9F)

ldi_aread(9F)						   Kernel Functions for Drivers 					     ldi_aread(9F)

NAME

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

SYNOPSIS

       #include <sys/sunldi.h>

       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 device.

       EINVAL	       Invalid input parameters.

       ENOTSUP	       Operation is not supported for this device.

CONTEXT

       These functions may be called from user context.

SunOS 5.10							    3 June 2003 						     ldi_aread(9F)