1/* $NetBSD: t_mkdir.c,v 1.2 2011/10/15 07:38:31 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2008, 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe and 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
32#include <sys/cdefs.h>
33__COPYRIGHT("@(#) Copyright (c) 2008\
34 The NetBSD Foundation, inc. All rights reserved.");
35__RCSID("$NetBSD: t_mkdir.c,v 1.2 2011/10/15 07:38:31 jruoho Exp $");
36
37#include <sys/stat.h>
38#include <sys/wait.h>
39
40#include <atf-c.h>
41#include <errno.h>
42#include <fcntl.h>
43#include <limits.h>
44#include <pwd.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <unistd.h>
49
50ATF_TC(mkdir_err);
51ATF_TC_HEAD(mkdir_err, tc)
52{
53	atf_tc_set_md_var(tc, "descr", "Checks errors from mkdir(2)");
54}
55
56ATF_TC_BODY(mkdir_err, tc)
57{
58	char buf[PATH_MAX + 1];
59	int fd;
60
61	(void)memset(buf, 'x', sizeof(buf));
62
63	fd = open("/etc", O_RDONLY);
64
65	if (fd >= 0) {
66
67		(void)close(fd);
68
69		errno = 0;
70		ATF_REQUIRE_ERRNO(EEXIST, mkdir("/etc", 0500) == -1);
71	}
72
73	errno = 0;
74	ATF_REQUIRE_ERRNO(EFAULT, mkdir((void *)-1, 0500) == -1);
75
76	errno = 0;
77	ATF_REQUIRE_ERRNO(ENAMETOOLONG, mkdir(buf, 0500) == -1);
78
79	errno = 0;
80	ATF_REQUIRE_ERRNO(ENOENT, mkdir("/a/b/c/d/e/f/g/h/i/j/k", 0500) == -1);
81}
82
83ATF_TC_WITH_CLEANUP(mkdir_perm);
84ATF_TC_HEAD(mkdir_perm, tc)
85{
86	atf_tc_set_md_var(tc, "descr", "Checks permissions with mkdir(2)");
87	atf_tc_set_md_var(tc, "require.user", "unprivileged");
88}
89
90ATF_TC_BODY(mkdir_perm, tc)
91{
92	errno = 0;
93	ATF_REQUIRE_ERRNO(EACCES, mkdir("/usr/__nonexistent__", 0500) == -1);
94}
95
96ATF_TC_CLEANUP(mkdir_perm, tc)
97{
98	(void)rmdir("/usr/__nonexistent__");
99}
100
101ATF_TC_WITH_CLEANUP(mkdir_mode);
102ATF_TC_HEAD(mkdir_mode, tc)
103{
104	atf_tc_set_md_var(tc, "descr", "Test that UIDs and GIDs are right "
105	    "for a directory created with mkdir(2)");
106	atf_tc_set_md_var(tc, "require.user", "root");
107}
108
109ATF_TC_BODY(mkdir_mode, tc)
110{
111	static const char *path = "/tmp/mkdir";
112	struct stat st_a, st_b;
113	struct passwd *pw;
114	pid_t pid;
115	int sta;
116
117	(void)memset(&st_a, 0, sizeof(struct stat));
118	(void)memset(&st_b, 0, sizeof(struct stat));
119
120	pw = getpwnam("nobody");
121
122	ATF_REQUIRE(pw != NULL);
123	ATF_REQUIRE(stat("/tmp", &st_a) == 0);
124
125	pid = fork();
126	ATF_REQUIRE(pid >= 0);
127
128	if (pid == 0) {
129
130		if (setuid(pw->pw_uid) != 0)
131			_exit(EXIT_FAILURE);
132
133		if (mkdir(path, 0500) != 0)
134			_exit(EXIT_FAILURE);
135
136		_exit(EXIT_SUCCESS);
137	}
138
139	(void)sleep(1);
140	(void)wait(&sta);
141
142	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
143		atf_tc_fail("failed to create '%s'", path);
144
145	ATF_REQUIRE(stat(path, &st_b) == 0);
146	ATF_REQUIRE(rmdir(path) == 0);
147
148	/*
149	 * The directory's owner ID should be set to the
150	 * effective UID, whereas the group ID should be
151	 * set to that of the parent directory.
152	 */
153	if (st_b.st_uid != pw->pw_uid)
154		atf_tc_fail("invalid UID for '%s'", path);
155
156	if (st_b.st_gid != st_a.st_gid)
157		atf_tc_fail("GID did not follow the parent directory");
158}
159
160ATF_TC_CLEANUP(mkdir_mode, tc)
161{
162	(void)rmdir("/tmp/mkdir");
163}
164
165ATF_TC(mkdir_trail);
166ATF_TC_HEAD(mkdir_trail, tc)
167{
168	atf_tc_set_md_var(tc, "descr", "Checks mkdir(2) for trailing slashes");
169}
170
171ATF_TC_BODY(mkdir_trail, tc)
172{
173	const char *tests[] = {
174		/*
175		 * IEEE 1003.1 second ed. 2.2.2.78:
176		 *
177		 * If the pathname refers to a directory, it may also have
178		 * one or more trailing slashes.  Multiple successive slashes
179		 * are considered to be the same as one slash.
180		 */
181		"dir1/",
182		"dir2//",
183
184		NULL,
185	};
186
187	const char **test;
188
189	for (test = &tests[0]; *test != NULL; ++test) {
190
191		(void)printf("Checking \"%s\"\n", *test);
192		(void)rmdir(*test);
193
194		ATF_REQUIRE(mkdir(*test, 0777) == 0);
195		ATF_REQUIRE(rename(*test, "foo") == 0);
196		ATF_REQUIRE(rename("foo/", *test) == 0);
197		ATF_REQUIRE(rmdir(*test) == 0);
198	}
199}
200
201ATF_TP_ADD_TCS(tp)
202{
203
204	ATF_TP_ADD_TC(tp, mkdir_err);
205	ATF_TP_ADD_TC(tp, mkdir_perm);
206	ATF_TP_ADD_TC(tp, mkdir_mode);
207	ATF_TP_ADD_TC(tp, mkdir_trail);
208
209	return atf_no_error();
210}
211