Current File : //usr/share/man/man9f/ddi_driver_major.9f

'\" te
.\" Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved.
.TH ddi_driver_major 9F "18 Jun 2001" "SunOS 5.11" "Kernel Functions for Drivers"
.SH NAME
ddi_driver_major \- return driver's major device number
.SH SYNOPSIS
.LP
.nf
#include <sys/ddi.h>
#include <sys/sunddi.h>

\fBmajor_t\fR \fBddi_driver_major\fR(\fBdev_info_t *\fR\fIdip\fR);
.fi

.SH INTERFACE LEVEL
.sp
.LP
Solaris DDI specific (Solaris DDI)
.SH DESCRIPTION
.sp
.LP
\fBddi_driver_major()\fR returns the major device number for the driver associated with the supplied \fBdev_info node\fR. This value can then be used as an argument to \fBmakedevice\fR(9F) to construct a complete \fBdev_t\fR.
.SH PARAMETERS
.sp
.ne 2
.mk
.na
\fB\fIdip\fR\fR
.ad
.RS 7n
.rt  
A pointer to the device's \fBdev_info\fR structure.
.RE

.SH RETURN VALUES
.sp
.LP
\fBddi_driver_major()\fR returns the major number of the driver bound to a device, if any, or \fBDDI_MAJOR_T_NONE\fR otherwise.
.SH CONTEXT
.sp
.LP
\fBddi_driver_major()\fR can be called from kernel or interrupt context.
.SH SEE ALSO
.sp
.LP
\fBddi_driver_name\fR(9F)
.sp
.LP
\fIWriting Device Drivers\fR