2 * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
38 makebuf(size_t len, int guard_at_end)
41 size_t alloc_size = roundup2(len, PAGE_SIZE) + PAGE_SIZE;
43 buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
46 assert(munmap(buf + alloc_size - PAGE_SIZE, PAGE_SIZE) == 0);
47 return (buf + alloc_size - PAGE_SIZE - len);
49 assert(munmap(buf, PAGE_SIZE) == 0);
50 return (buf + PAGE_SIZE);
55 test_stpncpy(const char *s)
58 size_t size, len, bufsize, x;
62 for (i = 0; i <= 1; i++) {
63 for (j = 0; j <= 1; j++) {
64 for (bufsize = 0; bufsize <= size + 10; bufsize++) {
65 src = makebuf(size, i);
67 dst = makebuf(bufsize, j);
68 memset(dst, 'X', bufsize);
69 len = (bufsize < size) ? bufsize : size - 1;
70 assert(stpncpy(dst, src, bufsize) == dst+len);
71 assert(memcmp(src, dst, len) == 0);
72 for (x = len; x < bufsize; x++)
73 assert(dst[x] == '\0');
80 main(int argc, char *argv[])
86 printf("ok 1 - stpncpy\n");
88 printf("ok 2 - stpncpy\n");
89 test_stpncpy("glorp");
90 printf("ok 3 - stpncpy\n");