mirror of
https://github.com/php/php-src.git
synced 2026-10-28 17:56:50 +08:00
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
|
|
+----------------------------------------------------------------------+
|
|
| Copyright © The PHP Group and Contributors. |
|
|
+----------------------------------------------------------------------+
|
|
| This source file is subject to the Modified BSD License that is |
|
|
| bundled with this package in the file LICENSE, and is available |
|
|
| through the World Wide Web at <https://www.php.net/license/>. |
|
|
| |
|
|
| SPDX-License-Identifier: BSD-3-Clause |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
#include "php.h"
|
|
|
|
#ifndef HAVE_EXPLICIT_BZERO
|
|
|
|
/* $OpenBSD: explicit_bzero.c,v 1.4 2015/08/31 02:53:57 guenther Exp $ */
|
|
/*
|
|
* Public domain.
|
|
* Written by Matthew Dempsky.
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
PHPAPI void php_explicit_bzero(void *dst, size_t siz)
|
|
{
|
|
#ifdef HAVE_MEMSET_EXPLICIT /* C23 */
|
|
memset_explicit(dst, 0, siz);
|
|
#elif defined(HAVE_EXPLICIT_MEMSET) /* NetBSD-specific */
|
|
explicit_memset(dst, 0, siz);
|
|
#elif defined(PHP_WIN32)
|
|
RtlSecureZeroMemory(dst, siz);
|
|
#elif defined(__GNUC__)
|
|
memset(dst, 0, siz);
|
|
asm __volatile__("" :: "r"(dst) : "memory");
|
|
#else
|
|
size_t i = 0;
|
|
volatile unsigned char *buf = (volatile unsigned char *)dst;
|
|
|
|
for (; i < siz; i ++)
|
|
buf[i] = 0;
|
|
#endif
|
|
}
|
|
#endif
|