1 /*
2 * Copyright (c) 2024 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /* compile: xcrun -sdk macosx.internal clang -ldarwintest -o fmount_funmount fmount_funmount.c -g -Weverything */
30
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <fcntl.h>
34 #include <unistd.h>
35 #include <errno.h>
36 #include <sys/mount.h>
37 #include <sys/param.h>
38 #include <sys/stat.h>
39
40 #include <darwintest.h>
41 #include <darwintest/utils.h>
42
43 #define RUN_TEST TARGET_OS_OSX
44
45 #define FSTYPE_APFS "apfs"
46 #define FSTYPE_DEVFS "devfs"
47
48 static char template[MAXPATHLEN];
49 static char *testdir = NULL;
50
51 T_GLOBAL_META(
52 T_META_NAMESPACE("xnu.vfs"),
53 T_META_RADAR_COMPONENT_NAME("xnu"),
54 T_META_RADAR_COMPONENT_VERSION("vfs"),
55 T_META_ASROOT(false),
56 T_META_ENABLED(RUN_TEST),
57 T_META_CHECK_LEAKS(false));
58
59 static int
verify_fstypename(const char * name)60 verify_fstypename(const char *name)
61 {
62 int error;
63 struct statfs statfs_buf;;
64
65 error = statfs(testdir, &statfs_buf);
66 if (error) {
67 return errno;
68 }
69
70 if (strncmp(name, statfs_buf.f_fstypename, MFSNAMELEN)) {
71 return EINVAL;
72 }
73
74 return 0;
75 }
76
77 static void
cleanup(void)78 cleanup(void)
79 {
80 if (testdir) {
81 rmdir(testdir);
82 }
83 }
84
85 T_DECL(fmount_funmount,
86 "Test fmount() and funmount() system calls")
87 {
88 #if (!RUN_TEST)
89 T_SKIP("Not macOS");
90 #endif
91
92 int fd;
93
94 T_ATEND(cleanup);
95
96 T_SETUPBEGIN;
97
98 snprintf(template, sizeof(template), "%s/fmount_funmount-XXXXXX", dt_tmpdir());
99 T_ASSERT_POSIX_NOTNULL((testdir = mkdtemp(template)), "Creating test root dir");
100 T_ASSERT_POSIX_ZERO(verify_fstypename(FSTYPE_APFS), "Verifing fstype name equals %s", FSTYPE_APFS);
101
102 T_SETUPEND;
103
104 /* Mount phase */
105 T_ASSERT_POSIX_SUCCESS((fd = open(testdir, O_DIRECTORY)), "Open test root dir: %s", testdir);
106 T_ASSERT_POSIX_SUCCESS(fmount(FSTYPE_DEVFS, fd, MNT_RDONLY, NULL), "Mounting temporary %s mount using fmount(fd = %d)", FSTYPE_DEVFS, fd);
107 T_ASSERT_POSIX_ZERO(verify_fstypename(FSTYPE_DEVFS), "Verifing fstype name equals %s", FSTYPE_DEVFS);
108 T_ASSERT_POSIX_SUCCESS(close(fd), "Closing (fd = %d)", fd);
109
110 /* Unmount phase */
111 T_ASSERT_POSIX_SUCCESS((fd = open(testdir, O_DIRECTORY)), "Open test root dir: %s", testdir);
112 T_ASSERT_POSIX_SUCCESS(funmount(fd, MNT_FORCE), "Unmounting %s using funmount(fd = %d)", testdir, fd);
113 T_ASSERT_POSIX_ZERO(verify_fstypename(FSTYPE_APFS), "Verifing fstype name equals %s", FSTYPE_APFS);
114 T_ASSERT_POSIX_SUCCESS(close(fd), "Closing (fd = %d)", fd);
115 }
116