1/*-
2 * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/lib/libc/tests/string/wcsnlen_test.c 350539 2019-08-02 16:05:36Z brooks $");
29
30#include <sys/param.h>
31#include <sys/mman.h>
32#include <assert.h>
33#include <stdio.h>
34#include <stdlib.h>
35#include <string.h>
36#include <wchar.h>
37
38#include <atf-c.h>
39
40static void *
41makebuf(size_t len, int guard_at_end)
42{
43	char *buf;
44	size_t alloc_size = roundup2(len, PAGE_SIZE) + PAGE_SIZE;
45
46	buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
47	ATF_CHECK(buf);
48	if (guard_at_end) {
49		ATF_CHECK(munmap(buf + alloc_size - PAGE_SIZE, PAGE_SIZE) == 0);
50		return (buf + alloc_size - PAGE_SIZE - len);
51	} else {
52		ATF_CHECK(munmap(buf, PAGE_SIZE) == 0);
53		return (buf + PAGE_SIZE);
54	}
55}
56
57static void
58test_wcsnlen(const wchar_t *s)
59{
60	wchar_t *s1;
61	size_t size, len, bufsize;
62	int i;
63
64	size = wcslen(s) + 1;
65	for (i = 0; i <= 1; i++) {
66		for (bufsize = 0; bufsize <= size + 10; bufsize++) {
67			s1 = makebuf(bufsize * sizeof(wchar_t), i);
68			wmemcpy(s1, s, bufsize <= size ? bufsize : size);
69			len = (size > bufsize) ? bufsize : size - 1;
70			ATF_CHECK(wcsnlen(s1, bufsize) == len);
71		}
72	}
73}
74
75ATF_TC_WITHOUT_HEAD(nul);
76ATF_TC_BODY(nul, tc)
77{
78
79	test_wcsnlen(L"");
80}
81
82ATF_TC_WITHOUT_HEAD(foo);
83ATF_TC_BODY(foo, tc)
84{
85
86	test_wcsnlen(L"foo");
87}
88
89ATF_TC_WITHOUT_HEAD(glorp);
90ATF_TC_BODY(glorp, tc)
91{
92
93	test_wcsnlen(L"glorp");
94}
95
96ATF_TP_ADD_TCS(tp)
97{
98
99	ATF_TP_ADD_TC(tp, nul);
100	ATF_TP_ADD_TC(tp, foo);
101	ATF_TP_ADD_TC(tp, glorp);
102
103	return (atf_no_error());
104}
105