1 /* $NetBSD: t_mknod.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $ */
2
3 /*-
4 * Copyright (c) 2011 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_mknod.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $");
33
34 #include <sys/stat.h>
35
36 #include <atf-c.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <limits.h>
40 #include <paths.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <unistd.h>
44
45 static char path[] = "node";
46
47 ATF_TC_WITH_CLEANUP(mknod_err);
ATF_TC_HEAD(mknod_err,tc)48 ATF_TC_HEAD(mknod_err, tc)
49 {
50 atf_tc_set_md_var(tc, "descr",
51 "Test error conditions of mknod(2) (PR kern/45111)");
52 atf_tc_set_md_var(tc, "require.user", "root");
53 }
54
ATF_TC_BODY(mknod_err,tc)55 ATF_TC_BODY(mknod_err, tc)
56 {
57 char buf[PATH_MAX + 1];
58
59 (void)memset(buf, 'x', sizeof(buf));
60
61 #ifndef __FreeBSD__
62 /*
63 * As of FreeBSD 6.0 device nodes may be created in regular file systems but
64 * such nodes cannot be used to access devices. As a result an invalid dev
65 * argument is unchecked.
66 */
67 errno = 0;
68 ATF_REQUIRE_ERRNO(EINVAL, mknod(path, S_IFCHR, -1) == -1);
69 #endif
70
71 errno = 0;
72 ATF_REQUIRE_ERRNO(ENAMETOOLONG, mknod(buf, S_IFCHR, 0) == -1);
73
74 errno = 0;
75 ATF_REQUIRE_ERRNO(EFAULT, mknod((char *)-1, S_IFCHR, 0) == -1);
76
77 errno = 0;
78 ATF_REQUIRE_ERRNO(ENOENT, mknod("/a/b/c/d/e/f/g", S_IFCHR, 0) == -1);
79 }
80
ATF_TC_CLEANUP(mknod_err,tc)81 ATF_TC_CLEANUP(mknod_err, tc)
82 {
83 (void)unlink(path);
84 }
85
86 ATF_TC_WITH_CLEANUP(mknod_exist);
ATF_TC_HEAD(mknod_exist,tc)87 ATF_TC_HEAD(mknod_exist, tc)
88 {
89 atf_tc_set_md_var(tc, "descr", "Test EEXIST from mknod(2)");
90 atf_tc_set_md_var(tc, "require.user", "root");
91 }
92
ATF_TC_BODY(mknod_exist,tc)93 ATF_TC_BODY(mknod_exist, tc)
94 {
95 int fd;
96
97 fd = open("/etc/passwd", O_RDONLY);
98
99 if (fd >= 0) {
100
101 (void)close(fd);
102
103 errno = 0;
104 ATF_REQUIRE_ERRNO(EEXIST,
105 mknod("/etc/passwd", S_IFCHR, 0) == -1);
106 }
107
108 ATF_REQUIRE(mknod(path, S_IFCHR, 0) == 0);
109
110 errno = 0;
111 ATF_REQUIRE_ERRNO(EEXIST, mknod(path, S_IFCHR, 0) == -1);
112
113 ATF_REQUIRE(unlink(path) == 0);
114 }
115
ATF_TC_CLEANUP(mknod_exist,tc)116 ATF_TC_CLEANUP(mknod_exist, tc)
117 {
118 (void)unlink(path);
119 }
120
121 ATF_TC_WITH_CLEANUP(mknod_perm);
ATF_TC_HEAD(mknod_perm,tc)122 ATF_TC_HEAD(mknod_perm, tc)
123 {
124 atf_tc_set_md_var(tc, "descr", "Test permissions of mknod(2)");
125 atf_tc_set_md_var(tc, "require.user", "unprivileged");
126 }
127
ATF_TC_BODY(mknod_perm,tc)128 ATF_TC_BODY(mknod_perm, tc)
129 {
130
131 errno = 0;
132 ATF_REQUIRE_ERRNO(EPERM, mknod(path, S_IFCHR, 0) == -1);
133
134 errno = 0;
135 ATF_REQUIRE_ERRNO(EPERM, mknod(path, S_IFBLK, 0) == -1);
136 }
137
ATF_TC_CLEANUP(mknod_perm,tc)138 ATF_TC_CLEANUP(mknod_perm, tc)
139 {
140 (void)unlink(path);
141 }
142
143 ATF_TC_WITH_CLEANUP(mknod_stat);
ATF_TC_HEAD(mknod_stat,tc)144 ATF_TC_HEAD(mknod_stat, tc)
145 {
146 atf_tc_set_md_var(tc, "descr", "A basic test of mknod(2)");
147 atf_tc_set_md_var(tc, "require.user", "root");
148 }
149
ATF_TC_BODY(mknod_stat,tc)150 ATF_TC_BODY(mknod_stat, tc)
151 {
152 struct stat st;
153
154 (void)memset(&st, 0, sizeof(struct stat));
155
156 ATF_REQUIRE(mknod(path, S_IFCHR, 0) == 0);
157 ATF_REQUIRE(stat(path, &st) == 0);
158
159 if (S_ISCHR(st.st_mode) == 0)
160 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFCHR)");
161
162 ATF_REQUIRE(unlink(path) == 0);
163
164 (void)memset(&st, 0, sizeof(struct stat));
165
166 ATF_REQUIRE(mknod(path, S_IFBLK, 0) == 0);
167 ATF_REQUIRE(stat(path, &st) == 0);
168
169 if (S_ISBLK(st.st_mode) == 0)
170 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFBLK)");
171
172 ATF_REQUIRE(unlink(path) == 0);
173
174 (void)memset(&st, 0, sizeof(struct stat));
175
176 #ifdef __FreeBSD__
177 atf_tc_expect_fail("mknod does not allow S_IFREG");
178 #endif
179 ATF_REQUIRE(mknod(path, S_IFREG, 0) == 0);
180 ATF_REQUIRE(stat(path, &st) == 0);
181
182 if (S_ISREG(st.st_mode) == 0)
183 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFREG)");
184
185 ATF_REQUIRE(unlink(path) == 0);
186 }
187
ATF_TC_CLEANUP(mknod_stat,tc)188 ATF_TC_CLEANUP(mknod_stat, tc)
189 {
190 (void)unlink(path);
191 }
192
ATF_TP_ADD_TCS(tp)193 ATF_TP_ADD_TCS(tp)
194 {
195
196 ATF_TP_ADD_TC(tp, mknod_err);
197 ATF_TP_ADD_TC(tp, mknod_exist);
198 ATF_TP_ADD_TC(tp, mknod_perm);
199 ATF_TP_ADD_TC(tp, mknod_stat);
200
201 return atf_no_error();
202 }
203