1 /*
2 * Check decoding of finit_module syscall.
3 *
4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "tests.h"
31
32 #include <asm/unistd.h>
33 #include "scno.h"
34
35 #if defined(__NR_finit_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 static const kernel_ulong_t bogus_fd =
46 (kernel_ulong_t) 0xdeb0d1edbeeff00dULL;
47
48 static const struct {
49 kernel_ulong_t val;
50 const char *str;
51 } flags[] = {
52 { ARG_STR(0) },
53 { (kernel_ulong_t) 0xffffffff00000002ULL,
54 "MODULE_INIT_IGNORE_VERMAGIC" },
55 { (kernel_ulong_t) 0xbadc0deddefaced0ULL,
56 "0xdefaced0 /* MODULE_INIT_??? */" },
57 { (kernel_ulong_t) 0xfacef157dec0ded1ULL,
58 "MODULE_INIT_IGNORE_MODVERSIONS|0xdec0ded0" },
59 { -1LL, "MODULE_INIT_IGNORE_MODVERSIONS|"
60 "MODULE_INIT_IGNORE_VERMAGIC|0xfffffffc" },
61 };
62
63 long rc;
64 char *bogus_param1 = tail_alloc(PARAM1_LEN);
65 char *bogus_param2 = tail_alloc(PARAM2_LEN);
66 const char *errstr;
67
68 fill_memory_ex(bogus_param1, PARAM1_LEN, PARAM1_BASE, PARAM1_LEN);
69 fill_memory_ex(bogus_param2, PARAM2_LEN, PARAM2_BASE, PARAM2_LEN);
70
71 rc = syscall(__NR_finit_module, bogus_zero, NULL, bogus_zero);
72 printf("finit_module(0, NULL, 0) = %s\n", sprintrc(rc));
73
74 rc = syscall(__NR_finit_module, bogus_fd, bogus_param1, flags[0].val);
75 errstr = sprintrc(rc);
76
77 printf("finit_module(%d, \"", (int) bogus_fd);
78 print_str(PARAM1_BASE, MAX_STRLEN, false);
79 printf("\"..., %s) = %s\n", flags[0].str, errstr);
80
81 bogus_param1[PARAM1_LEN - 1] = '\0';
82
83 rc = syscall(__NR_finit_module, bogus_fd, bogus_param1, flags[1].val);
84 errstr = sprintrc(rc);
85
86 printf("finit_module(%d, \"", (int) bogus_fd);
87 print_str(PARAM1_BASE, MAX_STRLEN, false);
88 printf("\", %s) = %s\n", flags[1].str, errstr);
89
90 rc = syscall(__NR_finit_module, bogus_fd, bogus_param2 + PARAM2_LEN,
91 flags[2].val);
92 printf("finit_module(%d, %p, %s) = %s\n",
93 (int) bogus_fd, bogus_param2 + PARAM2_LEN, flags[2].str,
94 sprintrc(rc));
95
96 rc = syscall(__NR_finit_module, bogus_fd, bogus_param2, flags[3].val);
97 printf("finit_module(%d, %p, %s) = %s\n",
98 (int) bogus_fd, bogus_param2, flags[3].str, sprintrc(rc));
99
100 bogus_param2[PARAM2_LEN - 1] = '\0';
101
102 rc = syscall(__NR_finit_module, bogus_fd, bogus_param2, flags[4].val);
103 errstr = sprintrc(rc);
104
105 printf("finit_module(%d, \"", (int) bogus_fd);
106 print_str(PARAM2_BASE, PARAM2_LEN - 1, true);
107 printf("\", %s) = %s\n", flags[4].str, errstr);
108
109 puts("+++ exited with 0 +++");
110
111 return 0;
112 }
113
114 #else
115
116 SKIP_MAIN_UNDEFINED("__NR_finit_module");
117
118 #endif
119