Annotation of embedaddon/sudo/common/zero_bytes.c, revision 1.1.1.1
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: }
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