1 /*-
2 * Copyright (c) 2009 David Schultz <[email protected]>
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("$FreeBSD$");
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
37 #include <atf-c.h>
38
39 static char *
makebuf(size_t len,int guard_at_end)40 makebuf(size_t len, int guard_at_end)
41 {
42 char *buf;
43 size_t alloc_size = roundup2(len, PAGE_SIZE) + PAGE_SIZE;
44
45 buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
46 assert(buf);
47 if (guard_at_end) {
48 assert(munmap(buf + alloc_size - PAGE_SIZE, PAGE_SIZE) == 0);
49 return (buf + alloc_size - PAGE_SIZE - len);
50 } else {
51 assert(munmap(buf, PAGE_SIZE) == 0);
52 return (buf + PAGE_SIZE);
53 }
54 }
55
56 static void
test_stpncpy(const char * s)57 test_stpncpy(const char *s)
58 {
59 char *src, *dst;
60 size_t size, len, bufsize, x;
61 int i, j;
62
63 size = strlen(s) + 1;
64 for (i = 0; i <= 1; i++) {
65 for (j = 0; j <= 1; j++) {
66 for (bufsize = 0; bufsize <= size + 10; bufsize++) {
67 src = makebuf(size, i);
68 memcpy(src, s, size);
69 dst = makebuf(bufsize, j);
70 memset(dst, 'X', bufsize);
71 len = (bufsize < size) ? bufsize : size - 1;
72 assert(stpncpy(dst, src, bufsize) == dst+len);
73 assert(memcmp(src, dst, len) == 0);
74 for (x = len; x < bufsize; x++)
75 assert(dst[x] == '\0');
76 }
77 }
78 }
79 }
80
81 ATF_TC_WITHOUT_HEAD(nul);
ATF_TC_BODY(nul,tc)82 ATF_TC_BODY(nul, tc)
83 {
84
85 test_stpncpy("");
86 }
87
88 ATF_TC_WITHOUT_HEAD(foo);
ATF_TC_BODY(foo,tc)89 ATF_TC_BODY(foo, tc)
90 {
91
92 test_stpncpy("foo");
93 }
94
95 ATF_TC_WITHOUT_HEAD(glorp);
ATF_TC_BODY(glorp,tc)96 ATF_TC_BODY(glorp, tc)
97 {
98
99 test_stpncpy("glorp");
100 }
101
ATF_TP_ADD_TCS(tp)102 ATF_TP_ADD_TCS(tp)
103 {
104
105 ATF_TP_ADD_TC(tp, nul);
106 ATF_TP_ADD_TC(tp, foo);
107 ATF_TP_ADD_TC(tp, glorp);
108
109 return (atf_no_error());
110 }
111