t_realpath.c revision 319093 
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
46static 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
67ATF_TC(realpath_basic);
68ATF_TC_HEAD(realpath_basic, tc)
69{
70	atf_tc_set_md_var(tc, "descr", "A basic test of realpath(3)");
71}
72
73ATF_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
97ATF_TC(realpath_huge);
98ATF_TC_HEAD(realpath_huge, tc)
99{
100	atf_tc_set_md_var(tc, "descr", "Test huge path with realpath(3)");
101}
102
103ATF_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
115ATF_TC(realpath_symlink);
116ATF_TC_HEAD(realpath_symlink, tc)
117{
118	atf_tc_set_md_var(tc, "descr", "Test symbolic link with realpath(3)");
119}
120
121ATF_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
154ATF_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}
163