1 /* $OpenBSD: t_umask.c,v 1.2 2021/12/13 16:56:48 deraadt Exp $ */
2 /* $NetBSD: t_umask.c,v 1.2 2017/01/13 19:34:19 christos 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 <sys/stat.h>
36 #include <sys/wait.h>
37
38 #include "atf-c.h"
39 #include <fcntl.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <unistd.h>
43
44 static const char path[] = "umask";
45 static const mode_t mask[] = {
46 S_IRWXU,
47 S_IRUSR,
48 S_IWUSR,
49 S_IXUSR,
50 S_IRWXG,
51 S_IRGRP,
52 S_IWGRP,
53 S_IXGRP,
54 S_IRWXO,
55 S_IROTH,
56 S_IWOTH,
57 S_IXOTH
58 };
59
60 ATF_TC_WITH_CLEANUP(umask_fork);
ATF_TC_HEAD(umask_fork,tc)61 ATF_TC_HEAD(umask_fork, tc)
62 {
63 atf_tc_set_md_var(tc, "descr", "Check that umask(2) is inherited");
64 }
65
ATF_TC_BODY(umask_fork,tc)66 ATF_TC_BODY(umask_fork, tc)
67 {
68 mode_t mode;
69 pid_t pid;
70 size_t i;
71 int sta;
72
73 for (i = 0; i < __arraycount(mask) - 1; i++) {
74
75 (void)umask(mask[i] | mask[i + 1]);
76
77 pid = fork();
78
79 if (pid < 0)
80 continue;
81
82 if (pid == 0) {
83
84 mode = umask(mask[i]);
85
86 if (mode != (mask[i] | mask[i + 1]))
87 _exit(EXIT_FAILURE);
88
89 _exit(EXIT_SUCCESS);
90 }
91
92 (void)wait(&sta);
93
94 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
95 goto fail;
96 }
97
98 return;
99
100 fail:
101 (void)umask(S_IWGRP | S_IWOTH);
102
103 atf_tc_fail("umask(2) was not inherited");
104 }
105
ATF_TC_CLEANUP(umask_fork,tc)106 ATF_TC_CLEANUP(umask_fork, tc)
107 {
108 (void)umask(S_IWGRP | S_IWOTH);
109 }
110
111 ATF_TC_WITH_CLEANUP(umask_open);
ATF_TC_HEAD(umask_open,tc)112 ATF_TC_HEAD(umask_open, tc)
113 {
114 atf_tc_set_md_var(tc, "descr", "A basic test of open(2) and umask(2)");
115 }
116
ATF_TC_BODY(umask_open,tc)117 ATF_TC_BODY(umask_open, tc)
118 {
119 const char *str = NULL;
120 struct stat st;
121 size_t i;
122 int fd;
123
124 for (i = 0; i < __arraycount(mask); i++) {
125
126 (void)umask(mask[i]);
127
128 fd = open(path, O_RDWR | O_CREAT, 0777);
129
130 if (fd < 0)
131 continue;
132
133 (void)close(fd);
134 (void)memset(&st, 0, sizeof(struct stat));
135
136 if (stat(path, &st) != 0) {
137 str = "failed to stat(2)";
138 goto out;
139 }
140
141 if ((st.st_mode & mask[i]) != 0) {
142 str = "invalid umask(2)";
143 goto out;
144 }
145
146 if (unlink(path) != 0) {
147 str = "failed to unlink(2)";
148 goto out;
149 }
150
151 }
152
153 out:
154 (void)umask(S_IWGRP | S_IWOTH);
155
156 if (str != NULL)
157 atf_tc_fail("%s", str);
158 }
159
ATF_TC_CLEANUP(umask_open,tc)160 ATF_TC_CLEANUP(umask_open, tc)
161 {
162 (void)umask(S_IWGRP | S_IWOTH);
163 (void)unlink(path);
164 }
165
166 ATF_TC_WITH_CLEANUP(umask_previous);
ATF_TC_HEAD(umask_previous,tc)167 ATF_TC_HEAD(umask_previous, tc)
168 {
169 atf_tc_set_md_var(tc, "descr", "Test the return value from umask(2)");
170 }
171
ATF_TC_BODY(umask_previous,tc)172 ATF_TC_BODY(umask_previous, tc)
173 {
174 mode_t mode;
175 size_t i;
176
177 for (i = 0; i < __arraycount(mask); i++) {
178
179 mode = umask(mask[i]);
180 mode = umask(mask[i]);
181
182 if (mode != mask[i])
183 goto fail;
184 }
185
186 return;
187
188 fail:
189 (void)umask(S_IWGRP | S_IWOTH);
190
191 atf_tc_fail("umask(2) did not return the previous mask");
192 }
193
ATF_TC_CLEANUP(umask_previous,tc)194 ATF_TC_CLEANUP(umask_previous, tc)
195 {
196 (void)umask(S_IWGRP | S_IWOTH);
197 }
198
ATF_TP_ADD_TCS(tp)199 ATF_TP_ADD_TCS(tp)
200 {
201
202 ATF_TP_ADD_TC(tp, umask_fork);
203 ATF_TP_ADD_TC(tp, umask_open);
204 ATF_TP_ADD_TC(tp, umask_previous);
205
206 return atf_no_error();
207 }
208