copystr.c revision 302408
1/*- 2 * Copyright (C) 1995 Wolfgang Solfrank. 3 * Copyright (C) 1995 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by TooLs GmbH. 17 * 4. The name of TooLs GmbH may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: copystr.c,v 1.3 2000/06/08 06:47:17 kleink Exp $ 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: stable/11/sys/powerpc/powerpc/copystr.c 113038 2003-04-03 21:36:33Z obrien $"); 36 37#include <sys/param.h> 38#include <sys/errno.h> 39#include <sys/systm.h> 40 41/* 42 * Emulate copyinstr. 43 */ 44int 45copystr(kfaddr, kdaddr, len, done) 46 const void *kfaddr; 47 void *kdaddr; 48 size_t len; 49 size_t *done; 50{ 51 const u_char *kfp = kfaddr; 52 u_char *kdp = kdaddr; 53 size_t l; 54 int rv; 55 56 rv = ENAMETOOLONG; 57 for (l = 0; len-- > 0; l++) { 58 if (!(*kdp++ = *kfp++)) { 59 l++; 60 rv = 0; 61 break; 62 } 63 } 64 if (done != NULL) { 65 *done = l; 66 } 67 return rv; 68} 69