Annotation of embedaddon/sudo/compat/memrchr.c, revision 1.1.1.2
1.1 misho 1: /*
1.1.1.2 ! misho 2: * Copyright (c) 2007, 2010-2011, 2013
! 3: * Todd C. Miller <Todd.Miller@courtesan.com>
1.1 misho 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:
1.1.1.2 ! misho 20: #ifndef HAVE_MEMRCHR
! 21:
1.1 misho 22: #include <sys/types.h>
23:
24: #include "missing.h"
25:
26: /*
27: * Reverse memchr()
28: * Find the last occurrence of 'c' in the buffer 's' of size 'n'.
29: */
30: void *
31: memrchr(const void *s, int c, size_t n)
32: {
33: const unsigned char *cp;
34:
35: if (n != 0) {
36: cp = (unsigned char *)s + n;
37: do {
38: if (*(--cp) == (unsigned char)c)
39: return (void *)cp;
40: } while (--n != 0);
41: }
42: return (void *)0;
43: }
1.1.1.2 ! misho 44: #endif /* HAVE_MEMRCHR */
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