'\" te
.\"  Copyright (c) 2004, Sun Microsystems, Inc.,  All Rights Reserved
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
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.TH LDI_GET_SIZE 9F "Mar 18, 2004"
.SH NAME
ldi_get_size \- Retrieve device size
.SH SYNOPSIS
.LP
.nf
#include <sys/sunldi.h>

\fBint\fR \fBldi_get_size\fR(\fBldi_handle_t\fR \fIlh\fR, \fBuint64_t *\fR\fIsizep\fR);
.fi

.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIlh\fR \fR
.ad
.RS 10n
Layered handle.
.RE

.sp
.ne 2
.na
\fB\fIsizep\fR \fR
.ad
.RS 10n
Pointer to the caller's unsigned 64-bit integer buffer.
.RE

.SH DESCRIPTION
.sp
.LP
The \fBldi_get_size()\fR function uses the layered driver handle to calculate
and return a device's size. The device size is returned within the caller
supplied buffer (*\fIsizep\fR). A valid layered driver handle must be obtained
via the \fBldi_open_by_name\fR(9F) interface prior to calling
\fBldi_get_size()\fR.
.SH RETURN VALUES
.sp
.LP
The \fBldi_get_size()\fR function returns the following values:
.sp
.ne 2
.na
\fBDDI_SUCCESS\fR
.ad
.RS 15n
The device size has been returned within the caller supplied buffer.
.RE

.sp
.ne 2
.na
\fBDDI_FAILURE\fR
.ad
.RS 15n
The device size could not be found or determined.
.RE

.SH CONTEXT
.sp
.LP
This function may be called from user or kernel context.
.SH SEE ALSO
.sp
.LP
\fBldi_open_by_name\fR(9F)
.sp
.LP
\fIWriting Device Drivers\fR