'\" te
.\" Copyright (c) 2003, Sun Microsystems, Inc.,  All Rights Reserved
.TH ldi_strategy 9F "3 June 2003" "SunOS 5.11" "Kernel Functions for Drivers"
.SH NAME
ldi_strategy \- Device strategy request
.SH SYNOPSIS
.LP
.nf
#include <sys/sunldi.h>

\fBint\fR \fBldi_strategy\fR(\fBldi_handle_t\fR \fIlh\fR, \fB struct buf *\fR\fIbp\fR);
.fi

.SH PARAMETERS
.sp
.ne 2
.mk
.na
\fB\fIlh\fR \fR
.ad
.RS 7n
.rt  
Layered handle.
.RE

.sp
.ne 2
.mk
.na
\fB\fIbp\fR \fR
.ad
.RS 7n
.rt  
Pointer to the \fBbuf(9S)\fR structure.
.RE

.SH DESCRIPTION
.sp
.LP
The \fBldi_strategy()\fR 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.
.SH RETURN VALUES
.sp
.LP
The \fBldi_strategy()\fR function returns \fB0\fR if the strategy request has been passed on to the target device. Other possible return values are:
.sp
.ne 2
.mk
.na
\fBEINVAL\fR
.ad
.RS 11n
.rt  
Invalid input parameters.
.RE

.sp
.ne 2
.mk
.na
\fBENOTSUP\fR
.ad
.RS 11n
.rt  
Operation is not supported for this device.
.RE

.sp
.LP
Once the request has been passed on to the target devices strategy entry point, any further errors will be reported by \fBbioerror\fR(9F) and \fBbiodone\fR(9F). See the \fBstrategy\fR(9E) entry point for more information.
.SH CONTEXT
.sp
.LP
This function may be called from user or kernel context.