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MFV r354378,r354379,r354386: 10499 Multi-modifier protection (MMP)
[FreeBSD/FreeBSD.git] / contrib / netbsd-tests / lib / libc / gen / t_realpath.c
1 /* $NetBSD: t_realpath.c,v 1.2 2012/03/27 07:54:58 njoly Exp $ */
2
3 /*-
4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jukka Ruohonen.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_realpath.c,v 1.2 2012/03/27 07:54:58 njoly Exp $");
33
34 #include <sys/param.h>
35
36 #include <atf-c.h>
37 #ifdef  __FreeBSD__
38 #include <errno.h>
39 #endif
40 #include <fcntl.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <unistd.h>
45
46 static const struct {
47         const char *path;
48         const char *result;
49 } paths[] = {
50
51         { "/",                  "/"             },
52         { "///////",            "/"             },
53         { "",                   NULL            },
54         { "       ",            NULL            },
55         { "/      ",            NULL            },
56         { "      /",            NULL            },
57         { "/etc///",            "/etc"          },
58         { "///////etc",         "/etc"          },
59         { "/a/b/c/d/e",         NULL            },
60         { "    /usr/bin    ",   NULL            },
61         { "\\//////usr//bin",   NULL            },
62         { "//usr//bin//",       "/usr/bin"      },
63         { "//////usr//bin//",   "/usr/bin"      },
64         { "/usr/bin//////////", "/usr/bin"      },
65 };
66
67 ATF_TC(realpath_basic);
68 ATF_TC_HEAD(realpath_basic, tc)
69 {
70         atf_tc_set_md_var(tc, "descr", "A basic test of realpath(3)");
71 }
72
73 ATF_TC_BODY(realpath_basic, tc)
74 {
75         char buf[MAXPATHLEN];
76         char *ptr;
77         size_t i;
78
79         for (i = 0; i < __arraycount(paths); i++) {
80
81                 (void)memset(buf, '\0', sizeof(buf));
82
83                 ptr = realpath(paths[i].path, buf);
84
85                 if (ptr == NULL && paths[i].result == NULL)
86                         continue;
87
88                 if (ptr == NULL && paths[i].result != NULL)
89                         atf_tc_fail("realpath failed for '%s'", paths[i].path);
90
91                 if (strcmp(paths[i].result, buf) != 0)
92                         atf_tc_fail("expected '%s', got '%s'",
93                             paths[i].result, buf);
94         }
95 }
96
97 ATF_TC(realpath_huge);
98 ATF_TC_HEAD(realpath_huge, tc)
99 {
100         atf_tc_set_md_var(tc, "descr", "Test huge path with realpath(3)");
101 }
102
103 ATF_TC_BODY(realpath_huge, tc)
104 {
105         char result[MAXPATHLEN] = { 0 };
106         char buffer[MAXPATHLEN] = { 0 };
107
108         (void)memset(buffer, '/', sizeof(buffer) - 1);
109
110         ATF_CHECK(realpath(buffer, result) != NULL);
111         ATF_CHECK(strlen(result) == 1);
112         ATF_CHECK(result[0] == '/');
113 }
114
115 ATF_TC(realpath_symlink);
116 ATF_TC_HEAD(realpath_symlink, tc)
117 {
118         atf_tc_set_md_var(tc, "descr", "Test symbolic link with realpath(3)");
119 }
120
121 ATF_TC_BODY(realpath_symlink, tc)
122 {
123         char path[MAXPATHLEN] = { 0 };
124         char slnk[MAXPATHLEN] = { 0 };
125         char resb[MAXPATHLEN] = { 0 };
126         int fd;
127
128 #ifdef  __FreeBSD__
129         ATF_REQUIRE_MSG(getcwd(path, sizeof(path)) != NULL,
130             "getcwd(path) failed: %s", strerror(errno));
131         ATF_REQUIRE_MSG(getcwd(slnk, sizeof(slnk)) != NULL,
132             "getcwd(slnk) failed: %s", strerror(errno));
133 #else
134         (void)getcwd(path, sizeof(path));
135         (void)getcwd(slnk, sizeof(slnk));
136 #endif
137
138         (void)strlcat(path, "/realpath", sizeof(path));
139         (void)strlcat(slnk, "/symbolic", sizeof(slnk));
140
141         fd = open(path, O_RDONLY | O_CREAT, 0600);
142
143         ATF_REQUIRE(fd >= 0);
144         ATF_REQUIRE(symlink(path, slnk) == 0);
145         ATF_REQUIRE(close(fd) == 0);
146
147         ATF_REQUIRE(realpath(slnk, resb) != NULL);
148         ATF_REQUIRE(strcmp(resb, path) == 0);
149
150         ATF_REQUIRE(unlink(path) == 0);
151         ATF_REQUIRE(unlink(slnk) == 0);
152 }
153
154 ATF_TP_ADD_TCS(tp)
155 {
156
157         ATF_TP_ADD_TC(tp, realpath_basic);
158         ATF_TP_ADD_TC(tp, realpath_huge);
159         ATF_TP_ADD_TC(tp, realpath_symlink);
160
161         return atf_no_error();
162 }