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Annotation of embedaddon/sudo/common/zero_bytes.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (c) 2003-2005, 2007, 2010
        !             3:  *     Todd C. Miller <Todd.Miller@courtesan.com>
        !             4:  *
        !             5:  * Permission to use, copy, modify, and distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            16:  */
        !            17: 
        !            18: #include <config.h>
        !            19: 
        !            20: #include <sys/types.h>
        !            21: 
        !            22: #include "missing.h"
        !            23: 
        !            24: /*
        !            25:  * Like bzero(3) but with a volatile pointer.  The hope is that
        !            26:  * the compiler will not be able to optimize away this function.
        !            27:  */
        !            28: void
        !            29: zero_bytes(volatile void *v, size_t n)
        !            30: {
        !            31:     volatile char *p, *ep;
        !            32: 
        !            33:     for (p = v, ep = p + n; p < ep; p++)
        !            34:        *p = 0;
        !            35:     return;
        !            36: }