1.\" Copyright 2018, Joyent, Inc. 2.\" Copyright (c) 2000, Sun Microsystems, Inc. All Rights Reserved. 3.\" Copyright 1989 AT&T 4.\" The contents of this file are subject to the terms of the 5.\" Common Development and Distribution License (the "License"). 6.\" You may not use this file except in compliance with the License. 7.\" 8.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9.\" or http://www.opensolaris.org/os/licensing. 10.\" See the License for the specific language governing permissions 11.\" and limitations under the License. 12.\" 13.\" When distributing Covered Code, include this CDDL HEADER in each 14.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15.\" If applicable, add the following below this CDDL HEADER, with the 16.\" fields enclosed by brackets "[]" replaced with your own identifying 17.\" information: Portions Copyright [yyyy] [name of copyright owner] 18.Dd July 9, 2018 19.Dt IOVEC 9S 20.Os 21.Sh NAME 22.Nm iovec 23.Nd data storage structure for I/O using uio 24.Sh SYNOPSIS 25.In sys/uio.h 26.Sh INTERFACE LEVEL 27Architecture independent level 1 (DDI/DKI). 28.Sh DESCRIPTION 29An 30.Vt iovec 31structure describes a data storage area for transfer in a 32.Xr uio 9S 33structure. 34Conceptually, it can be thought of as a base address 35and length specification. 36.Sh STRUCTURE MEMBERS 37.Bd -literal -offset 2n 38caddr_t iov_base; /* base address of the data storage area */ 39 /* represented by the iovec structure */ 40int iov_len; /* size of the data storage area in bytes */ 41.Ed 42.Sh SEE ALSO 43.Xr uio 9S 44.Rs 45.%T Writing Device Drivers 46.Re 47