1 /*
2 * Check decoding of mount syscall.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Copyright (c) 2016-2018 The strace developers.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "tests.h"
32 #include <stdio.h>
33 #include <unistd.h>
34 #include <sys/mount.h>
35
36 #ifndef MS_MGC_VAL
37 # define MS_MGC_VAL 0xC0ED0000
38 #endif
39
40 #ifndef MS_RELATIME
41 # define MS_RELATIME (1ul << 21)
42 #endif
43
44 #if XLAT_RAW
45 # define str_unknown "0x300"
46 # define str_submount_200 "0x4000200"
47 # define str_mgc_val "0xc0ed0000"
48 # define str_remount "0x20"
49 # define str_bind "0x1000"
50 # define str_ro_nosuid_nodev_noexec "0xf"
51 # define str_ro_nosuid_nodev_noexec_relatime "0x20000f"
52 #elif XLAT_VERBOSE
53 # define str_unknown "0x300 /* MS_??? */"
54 # define str_submount_200 "0x4000200 /* MS_SUBMOUNT|0x200 */"
55 # define str_mgc_val "0xc0ed0000 /* MS_MGC_VAL */"
56 # define str_remount "0x20 /* MS_REMOUNT */"
57 # define str_bind "0x1000 /* MS_BIND */"
58 # define str_ro_nosuid_nodev_noexec \
59 "0xf /* MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC */"
60 # define str_ro_nosuid_nodev_noexec_relatime \
61 "0x20000f /* MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_RELATIME */"
62 #else /* !XLAT_RAW && !XLAT_VERBOSE */
63 # define str_unknown "0x300 /* MS_??? */"
64 # define str_submount_200 "MS_SUBMOUNT|0x200"
65 # define str_mgc_val "MS_MGC_VAL"
66 # define str_remount "MS_REMOUNT"
67 # define str_bind "MS_BIND"
68 # define str_ro_nosuid_nodev_noexec "MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC"
69 # define str_ro_nosuid_nodev_noexec_relatime \
70 "MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_RELATIME"
71 #endif /* XLAT_RAW, XLAT_VERBOSE */
72
73 int
main(void)74 main(void)
75 {
76 static const char source[] = "mount_source";
77 static const char target[] = "mount_target";
78 static const char fstype[] = "mount_fstype";
79 static const char data[] = "mount_data";
80 TAIL_ALLOC_OBJECT_CONST_PTR(char, bogus);
81
82 bogus[0] = 'a';
83
84 int rc = mount(NULL, NULL, NULL, 0, NULL);
85 printf("mount(NULL, NULL, NULL, 0, NULL) = %s\n",
86 sprintrc(rc));
87
88 rc = mount(bogus, bogus, bogus, 768, bogus);
89 printf("mount(%p, %p, %p, %s, %p) = %s\n",
90 bogus, bogus, bogus, str_unknown, bogus, sprintrc(rc));
91
92 rc = mount(bogus + 1, bogus + 1, bogus + 1, 0x4000200, bogus + 1);
93 printf("mount(%p, %p, %p, %s, %p) = %s\n",
94 bogus + 1, bogus + 1, bogus + 1, str_submount_200,
95 bogus + 1, sprintrc(rc));
96
97 rc = mount(source, target, fstype, 15, data);
98 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n",
99 source, target, fstype, str_ro_nosuid_nodev_noexec,
100 data, sprintrc(rc));
101
102 rc = mount(source, target, fstype, MS_RELATIME | 15, data);
103 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n",
104 source, target, fstype,
105 str_ro_nosuid_nodev_noexec_relatime,
106 data, sprintrc(rc));
107
108 rc = mount(source, target, fstype, MS_MGC_VAL, data);
109 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n",
110 source, target, fstype, str_mgc_val, data, sprintrc(rc));
111
112 rc = mount(source, target, fstype, MS_MGC_VAL | 15, data);
113 printf("mount(\"%s\", \"%s\", \"%s\", %s, \"%s\") = %s\n",
114 source, target, fstype,
115 str_mgc_val "|" str_ro_nosuid_nodev_noexec,
116 data, sprintrc(rc));
117
118 rc = mount(source, target, NULL, MS_REMOUNT, data);
119 printf("mount(\"%s\", \"%s\", NULL, %s, \"%s\") = %s\n",
120 source, target, str_remount, data, sprintrc(rc));
121
122 rc = mount(source, target, fstype, MS_REMOUNT, data);
123 printf("mount(\"%s\", \"%s\", %p, %s, \"%s\") = %s\n",
124 source, target, fstype, str_remount, data, sprintrc(rc));
125
126 rc = mount(source, target, NULL, MS_BIND, data);
127 printf("mount(\"%s\", \"%s\", NULL, %s, %p) = %s\n",
128 source, target, str_bind, data, sprintrc(rc));
129
130 rc = mount(source, target, fstype, MS_BIND, NULL);
131 printf("mount(\"%s\", \"%s\", %p, %s, NULL) = %s\n",
132 source, target, fstype, str_bind, sprintrc(rc));
133
134 puts("+++ exited with 0 +++");
135 return 0;
136 }
137