1/* 2 * Copyright (c) 2003-2005, 2007 Todd C. Miller <Todd.Miller@courtesan.com> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#include <config.h> 18 19#include <sys/types.h> 20 21#include "missing.h" 22 23/* 24 * Like bzero(3) but with a volatile pointer. The hope is that 25 * the compiler will not be able to optimize away this function. 26 */ 27void 28zero_bytes(v, n) 29 volatile void *v; 30 size_t n; 31{ 32 volatile char *p, *ep; 33 34 for (p = v, ep = p + n; p < ep; p++) 35 *p = 0; 36 return; 37} 38