1 /*
2 * Check decoding of finit_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 #include "scno.h"
35
36 #if defined(__NR_finit_module)
37
38 # include <stdio.h>
39 # include <unistd.h>
40
41 # include "init_delete_module.h"
42
43 int
main(void)44 main(void)
45 {
46 static const kernel_ulong_t bogus_fd =
47 (kernel_ulong_t) 0xdeb0d1edbeeff00dULL;
48
49 static const struct {
50 kernel_ulong_t val;
51 const char *str;
52 } flags[] = {
53 { ARG_STR(0) },
54 { (kernel_ulong_t) 0xffffffff00000002ULL,
55 "MODULE_INIT_IGNORE_VERMAGIC" },
56 { (kernel_ulong_t) 0xbadc0deddefaced0ULL,
57 "0xdefaced0 /* MODULE_INIT_??? */" },
58 { (kernel_ulong_t) 0xfacef157dec0ded1ULL,
59 "MODULE_INIT_IGNORE_MODVERSIONS|0xdec0ded0" },
60 { -1LL, "MODULE_INIT_IGNORE_MODVERSIONS|"
61 "MODULE_INIT_IGNORE_VERMAGIC|0xfffffffc" },
62 };
63
64 long rc;
65 char *bogus_param1 = tail_alloc(PARAM1_LEN);
66 char *bogus_param2 = tail_alloc(PARAM2_LEN);
67 const char *errstr;
68
69 fill_memory_ex(bogus_param1, PARAM1_LEN, PARAM1_BASE, PARAM1_LEN);
70 fill_memory_ex(bogus_param2, PARAM2_LEN, PARAM2_BASE, PARAM2_LEN);
71
72 rc = syscall(__NR_finit_module, F8ILL_KULONG_MASK, NULL,
73 F8ILL_KULONG_MASK);
74 printf("finit_module(0, NULL, 0) = %s\n", sprintrc(rc));
75
76 rc = syscall(__NR_finit_module, bogus_fd, bogus_param1, flags[0].val);
77 errstr = sprintrc(rc);
78
79 printf("finit_module(%d, \"", (int) bogus_fd);
80 print_str(PARAM1_BASE, MAX_STRLEN, false);
81 printf("\"..., %s) = %s\n", flags[0].str, errstr);
82
83 bogus_param1[PARAM1_LEN - 1] = '\0';
84
85 rc = syscall(__NR_finit_module, bogus_fd, bogus_param1, flags[1].val);
86 errstr = sprintrc(rc);
87
88 printf("finit_module(%d, \"", (int) bogus_fd);
89 print_str(PARAM1_BASE, MAX_STRLEN, false);
90 printf("\", %s) = %s\n", flags[1].str, errstr);
91
92 rc = syscall(__NR_finit_module, bogus_fd, bogus_param2 + PARAM2_LEN,
93 flags[2].val);
94 printf("finit_module(%d, %p, %s) = %s\n",
95 (int) bogus_fd, bogus_param2 + PARAM2_LEN, flags[2].str,
96 sprintrc(rc));
97
98 rc = syscall(__NR_finit_module, bogus_fd, bogus_param2, flags[3].val);
99 printf("finit_module(%d, %p, %s) = %s\n",
100 (int) bogus_fd, bogus_param2, flags[3].str, sprintrc(rc));
101
102 bogus_param2[PARAM2_LEN - 1] = '\0';
103
104 rc = syscall(__NR_finit_module, bogus_fd, bogus_param2, flags[4].val);
105 errstr = sprintrc(rc);
106
107 printf("finit_module(%d, \"", (int) bogus_fd);
108 print_str(PARAM2_BASE, PARAM2_LEN - 1, true);
109 printf("\", %s) = %s\n", flags[4].str, errstr);
110
111 puts("+++ exited with 0 +++");
112
113 return 0;
114 }
115
116 #else
117
118 SKIP_MAIN_UNDEFINED("__NR_finit_module");
119
120 #endif
121