1 /* $OpenBSD: t_access.c,v 1.3 2021/12/13 16:56:48 deraadt Exp $ */
2 /* $NetBSD: t_access.c,v 1.3 2019/07/16 17:29:18 martin Exp $ */
3
4 /*-
5 * Copyright (c) 2011 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jukka Ruohonen.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "macros.h"
34
35 #include "atf-c.h"
36
37 #include <sys/stat.h>
38
39 #include <errno.h>
40 #include <fcntl.h>
41 #include <limits.h>
42 #include <stdint.h>
43 #include <stdlib.h>
44 #include <unistd.h>
45
46 static const char path[] = "access";
47 static const int mode[4] = { R_OK, W_OK, X_OK, F_OK };
48
49 ATF_TC_WITH_CLEANUP(access_access);
ATF_TC_HEAD(access_access,tc)50 ATF_TC_HEAD(access_access, tc)
51 {
52 atf_tc_set_md_var(tc, "descr", "Test access(2) for EACCES");
53 atf_tc_set_md_var(tc, "require.user", "unprivileged");
54 }
55
ATF_TC_BODY(access_access,tc)56 ATF_TC_BODY(access_access, tc)
57 {
58 const int perm[3] = { 0200, 0400, 0000 };
59 size_t i;
60 int fd;
61
62 fd = open(path, O_RDONLY | O_CREAT, 0600);
63
64 if (fd < 0)
65 return;
66
67 for (i = 0; i < __arraycount(mode) - 1; i++) {
68
69 ATF_REQUIRE(fchmod(fd, perm[i]) == 0);
70
71 errno = 0;
72
73 ATF_REQUIRE(access(path, mode[i]) != 0);
74 ATF_REQUIRE(errno == EACCES);
75 }
76
77 ATF_REQUIRE(close(fd) == 0);
78 }
79
ATF_TC_CLEANUP(access_access,tc)80 ATF_TC_CLEANUP(access_access, tc)
81 {
82 (void)unlink(path);
83 }
84
85 ATF_TC(access_fault);
ATF_TC_HEAD(access_fault,tc)86 ATF_TC_HEAD(access_fault, tc)
87 {
88 atf_tc_set_md_var(tc, "descr", "Test access(2) for EFAULT");
89 }
90
ATF_TC_BODY(access_fault,tc)91 ATF_TC_BODY(access_fault, tc)
92 {
93 size_t i;
94
95 for (i = 0; i < __arraycount(mode); i++) {
96
97 errno = 0;
98
99 ATF_REQUIRE(access(NULL, mode[i]) != 0);
100 ATF_REQUIRE(errno == EFAULT);
101
102 errno = 0;
103
104 ATF_REQUIRE(access((char *)-1, mode[i]) != 0);
105 ATF_REQUIRE(errno == EFAULT);
106 }
107 }
108
109 ATF_TC(access_inval);
ATF_TC_HEAD(access_inval,tc)110 ATF_TC_HEAD(access_inval, tc)
111 {
112 atf_tc_set_md_var(tc, "descr", "Test access(2) for EINVAL");
113 }
114
ATF_TC_BODY(access_inval,tc)115 ATF_TC_BODY(access_inval, tc)
116 {
117
118 errno = 0;
119
120 ATF_REQUIRE(access("/usr", -1) != 0);
121 ATF_REQUIRE(errno == EINVAL);
122 }
123
124 ATF_TC(access_notdir);
ATF_TC_HEAD(access_notdir,tc)125 ATF_TC_HEAD(access_notdir, tc)
126 {
127 atf_tc_set_md_var(tc, "descr", "Test access(2) for ENOTDIR");
128 }
129
ATF_TC_BODY(access_notdir,tc)130 ATF_TC_BODY(access_notdir, tc)
131 {
132 size_t i;
133
134 for (i = 0; i < __arraycount(mode); i++) {
135
136 errno = 0;
137
138 /*
139 * IEEE Std 1003.1-2008 about ENOTDIR:
140 *
141 * "A component of the path prefix is not a directory,
142 * or the path argument contains at least one non-<slash>
143 * character and ends with one or more trailing <slash>
144 * characters and the last pathname component names an
145 * existing file that is neither a directory nor a symbolic
146 * link to a directory."
147 */
148 ATF_REQUIRE(access("/etc/passwd//", mode[i]) != 0);
149 ATF_REQUIRE(errno == ENOTDIR);
150 }
151 }
152
153 ATF_TC(access_notexist);
ATF_TC_HEAD(access_notexist,tc)154 ATF_TC_HEAD(access_notexist, tc)
155 {
156 atf_tc_set_md_var(tc, "descr", "Test access(2) for ENOENT");
157 }
158
ATF_TC_BODY(access_notexist,tc)159 ATF_TC_BODY(access_notexist, tc)
160 {
161 size_t i;
162
163 for (i = 0; i < __arraycount(mode); i++) {
164
165 errno = 0;
166
167 ATF_REQUIRE(access("", mode[i]) != 0);
168 ATF_REQUIRE(errno == ENOENT);
169 }
170 }
171
172 ATF_TC(access_toolong);
ATF_TC_HEAD(access_toolong,tc)173 ATF_TC_HEAD(access_toolong, tc)
174 {
175 atf_tc_set_md_var(tc, "descr", "Test access(2) for ENAMETOOLONG");
176 }
177
ATF_TC_BODY(access_toolong,tc)178 ATF_TC_BODY(access_toolong, tc)
179 {
180 char *buf;
181 size_t i;
182
183 buf = malloc(PATH_MAX);
184
185 if (buf == NULL)
186 return;
187
188 for (i = 0; i < PATH_MAX; i++)
189 buf[i] = 'x';
190
191 for (i = 0; i < __arraycount(mode); i++) {
192
193 errno = 0;
194
195 ATF_REQUIRE(access(buf, mode[i]) != 0);
196 ATF_REQUIRE(errno == ENAMETOOLONG);
197 }
198
199 free(buf);
200 }
201
ATF_TP_ADD_TCS(tp)202 ATF_TP_ADD_TCS(tp)
203 {
204
205 ATF_TP_ADD_TC(tp, access_access);
206 ATF_TP_ADD_TC(tp, access_fault);
207 ATF_TP_ADD_TC(tp, access_inval);
208 ATF_TP_ADD_TC(tp, access_notdir);
209 ATF_TP_ADD_TC(tp, access_notexist);
210 ATF_TP_ADD_TC(tp, access_toolong);
211
212 return atf_no_error();
213 }
214