1 /*
2 * Check decoding of init_module syscall.
3 *
4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
5 * Copyright (c) 2016-2017 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
33 #include <asm/unistd.h>
34
35 #if defined(__NR_init_module)
36
37 # include <stdio.h>
38 # include <unistd.h>
39
40 # include "init_delete_module.h"
41
42 int
main(void)43 main(void)
44 {
45
46 static const kernel_ulong_t bogus_addr =
47 (kernel_ulong_t) 0xfffffeedfffffaceULL;
48 static const kernel_ulong_t bogus_len =
49 (kernel_ulong_t) 0xfffffca7ffffc0deULL;
50
51 long rc;
52 char *bogus_param1 = tail_alloc(PARAM1_LEN);
53 char *bogus_param2 = tail_alloc(PARAM2_LEN);
54 const char *errstr;
55
56 fill_memory_ex(bogus_param1, PARAM1_LEN, PARAM1_BASE, PARAM1_LEN);
57 fill_memory_ex(bogus_param2, PARAM2_LEN, PARAM2_BASE, PARAM2_LEN);
58
59 rc = syscall(__NR_init_module, NULL, F8ILL_KULONG_MASK, NULL);
60 printf("init_module(NULL, %llu, NULL) = %s\n",
61 (unsigned long long) F8ILL_KULONG_MASK, sprintrc(rc));
62
63 rc = syscall(__NR_init_module, bogus_addr, 0, bogus_param1);
64 errstr = sprintrc(rc);
65
66 printf("init_module(%#llx, 0, \"", (unsigned long long) bogus_addr);
67 print_str(PARAM1_BASE, MAX_STRLEN, false);
68 printf("\"...) = %s\n", errstr);
69
70 bogus_param1[PARAM1_LEN - 1] = '\0';
71
72 rc = syscall(__NR_init_module, bogus_addr, 0, bogus_param1);
73 errstr = sprintrc(rc);
74
75 printf("init_module(%#llx, 0, \"", (unsigned long long) bogus_addr);
76 print_str(PARAM1_BASE, MAX_STRLEN, false);
77 printf("\") = %s\n", errstr);
78
79 rc = syscall(__NR_init_module, bogus_addr, bogus_len,
80 bogus_param2 + PARAM2_LEN);
81 printf("init_module(%#llx, %llu, %p) = %s\n",
82 (unsigned long long) bogus_addr, (unsigned long long) bogus_len,
83 bogus_param2 + PARAM2_LEN, sprintrc(rc));
84
85 rc = syscall(__NR_init_module, NULL, bogus_len, bogus_param2);
86 printf("init_module(NULL, %llu, %p) = %s\n",
87 (unsigned long long) bogus_len, bogus_param2, sprintrc(rc));
88
89 bogus_param2[PARAM2_LEN - 1] = '\0';
90
91 rc = syscall(__NR_init_module, NULL, bogus_len, bogus_param2);
92 errstr = sprintrc(rc);
93
94 printf("init_module(NULL, %llu, \"", (unsigned long long) bogus_len);
95 print_str(PARAM2_BASE, PARAM2_LEN - 1, true);
96 printf("\") = %s\n", errstr);
97
98 puts("+++ exited with 0 +++");
99
100 return 0;
101 }
102
103 #else
104
105 SKIP_MAIN_UNDEFINED("__NR_init_module");
106
107 #endif
108