1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Chris Torek. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" from: @(#)bcopy.3 8.1 (Berkeley) 6/4/93 36.\" $NetBSD: bcopy.9,v 1.6 2002/02/13 08:18:36 ross Exp $ 37.\" 38.Dd July 7, 2001 39.Dt BCOPY 9 40.Os 41.Sh NAME 42.Nm bcopy 43.Nd copy byte string 44.Sh SYNOPSIS 45.Fd #include \*[Lt]sys/systm.h\*[Gt] 46.Ft void 47.Fn bcopy "const void *src" "void *dst" "size_t len" 48.Sh DESCRIPTION 49.Bf -symbolic 50The 51.Fn bcopy 52interface is obsolete. 53Do not add new code using it. 54It will soon be purged. 55Use 56.Xr memcpy 9 57instead. 58(The 59.Fn bcopy 60function is now a macro for 61.Xr memcpy 9 . ) 62.Ef 63.Pp 64The 65.Fn bcopy 66function 67copies 68.Fa len 69bytes from string 70.Fa src 71to string 72.Fa dst . 73.Pp 74.Bf -symbolic 75Unlike 76.Xr bcopy 3 77the two strings must not overlap! 78.Ef 79In the traditional 80.Bx 81kernel, overlapping copies were handled by the now-purged 82.Fn ovbcopy 83function. If you need to copy overlapping data, see 84.Xr memmove 9 . 85.Pp 86If 87.Fa len 88is zero, no bytes are copied. 89.Sh SEE ALSO 90.Xr bcopy 3 , 91.Xr memcpy 9 , 92.Xr memmove 9 93