1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1998 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.\" $FreeBSD$ 30.\" 31.Dd June 16, 1998 32.Dt DEVICE_GET_IVARS 9 33.Os 34.Sh NAME 35.Nm device_get_ivars , 36.Nm device_set_ivars 37.Nd access bus private variables 38.Sh SYNOPSIS 39.In sys/param.h 40.In sys/bus.h 41.Ft "void *" 42.Fn device_get_ivars "device_t dev" 43.Ft void 44.Fn device_set_ivars "device_t dev" "void *ivar" 45.Sh DESCRIPTION 46The 47.Fn device_get_ivars 48function returns the bus-specific instance variables of a device. 49.Pp 50The 51.Fn device_set_ivars 52function sets the bus-specific instance variables of a device. 53.Pp 54Typically, only bus drivers will use these functions. 55The kernel assumes that the bus driver will manage this memory, and no 56automatic memory allocation or deallocation happens. 57Client drivers should access ivars through the 58.Xr BUS_READ_IVAR 9 59interface instead. 60.Sh SEE ALSO 61.Xr device 9 62.Sh AUTHORS 63This manual page was written by 64.An Doug Rabson . 65