1/* $NetBSD: t_strcpy.c,v 1.1 2011/07/07 08:59:33 jruoho Exp $ */
2
3/*
4 * Written by J.T. Conklin <jtc@acorntoolworks.com>
5 * Public domain.
6 */
7
8#include <atf-c.h>
9#include <string.h>
10#include <unistd.h>
11#include <stdio.h>
12#include <stdlib.h>
13
14ATF_TC(strcpy_basic);
15ATF_TC_HEAD(strcpy_basic, tc)
16{
17        atf_tc_set_md_var(tc, "descr", "Test strcpy(3) results");
18}
19
20ATF_TC_BODY(strcpy_basic, tc)
21{
22	/* try to trick the compiler */
23	char * (*f)(char *, const char *s) = strcpy;
24
25	unsigned int a0, a1, t;
26	char buf0[64];
27	char buf1[64];
28	char *ret;
29
30	struct tab {
31		const char*	val;
32		size_t		len;
33	};
34
35	const struct tab tab[] = {
36		/*
37		 * patterns that check for all combinations of leading and
38		 * trailing unaligned characters (on a 64 bit processor)
39		 */
40
41		{ "",				0 },
42		{ "a",				1 },
43		{ "ab",				2 },
44		{ "abc",			3 },
45		{ "abcd",			4 },
46		{ "abcde",			5 },
47		{ "abcdef",			6 },
48		{ "abcdefg",			7 },
49		{ "abcdefgh",			8 },
50		{ "abcdefghi",			9 },
51		{ "abcdefghij",			10 },
52		{ "abcdefghijk",		11 },
53		{ "abcdefghijkl",		12 },
54		{ "abcdefghijklm",		13 },
55		{ "abcdefghijklmn",		14 },
56		{ "abcdefghijklmno",		15 },
57		{ "abcdefghijklmnop",		16 },
58		{ "abcdefghijklmnopq",		17 },
59		{ "abcdefghijklmnopqr",		18 },
60		{ "abcdefghijklmnopqrs",	19 },
61		{ "abcdefghijklmnopqrst",	20 },
62		{ "abcdefghijklmnopqrstu",	21 },
63		{ "abcdefghijklmnopqrstuv",	22 },
64		{ "abcdefghijklmnopqrstuvw",	23 },
65
66		/*
67		 * patterns that check for the cases where the expression:
68		 *
69		 *	((word - 0x7f7f..7f) & 0x8080..80)
70		 *
71		 * returns non-zero even though there are no zero bytes in
72		 * the word.
73		 */
74
75		{ "" "\xff\xff\xff\xff\xff\xff\xff\xff" "abcdefgh",	16 },
76		{ "a" "\xff\xff\xff\xff\xff\xff\xff\xff" "bcdefgh",	16 },
77		{ "ab" "\xff\xff\xff\xff\xff\xff\xff\xff" "cdefgh",	16 },
78		{ "abc" "\xff\xff\xff\xff\xff\xff\xff\xff" "defgh",	16 },
79		{ "abcd" "\xff\xff\xff\xff\xff\xff\xff\xff" "efgh",	16 },
80		{ "abcde" "\xff\xff\xff\xff\xff\xff\xff\xff" "fgh",	16 },
81		{ "abcdef" "\xff\xff\xff\xff\xff\xff\xff\xff" "gh",	16 },
82		{ "abcdefg" "\xff\xff\xff\xff\xff\xff\xff\xff" "h",	16 },
83		{ "abcdefgh" "\xff\xff\xff\xff\xff\xff\xff\xff" "",	16 },
84	};
85
86	for (a0 = 0; a0 < sizeof(long); ++a0) {
87		for (a1 = 0; a1 < sizeof(long); ++a1) {
88			for (t = 0; t < (sizeof(tab) / sizeof(tab[0])); ++t) {
89
90				memcpy(&buf1[a1], tab[t].val, tab[t].len + 1);
91				ret = f(&buf0[a0], &buf1[a1]);
92
93				/*
94				 * verify strcpy returns address of
95				 * first parameter
96				 */
97			    	if (&buf0[a0] != ret) {
98					fprintf(stderr, "a0 %d, a1 %d, t %d\n",
99					    a0, a1, t);
100					atf_tc_fail("strcpy did not return "
101					    "its first arg");
102				}
103
104				/*
105				 * verify string was copied correctly
106				 */
107				if (memcmp(&buf0[a0], &buf1[a1],
108					   tab[t].len + 1) != 0) {
109					fprintf(stderr, "a0 %d, a1 %d, t %d\n",
110					    a0, a1, t);
111					atf_tc_fail("not correctly copied");
112				}
113			}
114		}
115	}
116}
117
118ATF_TP_ADD_TCS(tp)
119{
120
121	ATF_TP_ADD_TC(tp, strcpy_basic);
122
123	return atf_no_error();
124}
125