1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
// SPDX-License-Identifier: GPL-2.0
/*
* Linux Security Module infrastructure tests
* Tests for the lsm_list_modules system call
*
* Copyright © 2022 Casey Schaufler <casey@schaufler-ca.com>
*/
#define _GNU_SOURCE
#include <linux/lsm.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include "../kselftest_harness.h"
#include "common.h"
TEST(size_null_lsm_list_modules)
{
const long page_size = sysconf(_SC_PAGESIZE);
__u64 *syscall_lsms = calloc(page_size, 1);
ASSERT_NE(NULL, syscall_lsms);
errno = 0;
ASSERT_EQ(-1, lsm_list_modules(syscall_lsms, NULL, 0));
ASSERT_EQ(EFAULT, errno);
free(syscall_lsms);
}
TEST(ids_null_lsm_list_modules)
{
const long page_size = sysconf(_SC_PAGESIZE);
__u32 size = page_size;
errno = 0;
ASSERT_EQ(-1, lsm_list_modules(NULL, &size, 0));
ASSERT_EQ(EFAULT, errno);
ASSERT_NE(1, size);
}
TEST(size_too_small_lsm_list_modules)
{
const long page_size = sysconf(_SC_PAGESIZE);
__u64 *syscall_lsms = calloc(page_size, 1);
__u32 size = 1;
ASSERT_NE(NULL, syscall_lsms);
errno = 0;
ASSERT_EQ(-1, lsm_list_modules(syscall_lsms, &size, 0));
ASSERT_EQ(E2BIG, errno);
ASSERT_NE(1, size);
free(syscall_lsms);
}
TEST(flags_set_lsm_list_modules)
{
const long page_size = sysconf(_SC_PAGESIZE);
__u64 *syscall_lsms = calloc(page_size, 1);
__u32 size = page_size;
ASSERT_NE(NULL, syscall_lsms);
errno = 0;
ASSERT_EQ(-1, lsm_list_modules(syscall_lsms, &size, 7));
ASSERT_EQ(EINVAL, errno);
ASSERT_EQ(page_size, size);
free(syscall_lsms);
}
TEST(correct_lsm_list_modules)
{
const long page_size = sysconf(_SC_PAGESIZE);
__u32 size = page_size;
__u64 *syscall_lsms = calloc(page_size, 1);
char *sysfs_lsms = calloc(page_size, 1);
char *name;
char *cp;
int count;
int i;
ASSERT_NE(NULL, sysfs_lsms);
ASSERT_NE(NULL, syscall_lsms);
ASSERT_EQ(0, read_sysfs_lsms(sysfs_lsms, page_size));
count = lsm_list_modules(syscall_lsms, &size, 0);
ASSERT_LE(1, count);
cp = sysfs_lsms;
for (i = 0; i < count; i++) {
switch (syscall_lsms[i]) {
case LSM_ID_CAPABILITY:
name = "capability";
break;
case LSM_ID_SELINUX:
name = "selinux";
break;
case LSM_ID_SMACK:
name = "smack";
break;
case LSM_ID_TOMOYO:
name = "tomoyo";
break;
case LSM_ID_APPARMOR:
name = "apparmor";
break;
case LSM_ID_YAMA:
name = "yama";
break;
case LSM_ID_LOADPIN:
name = "loadpin";
break;
case LSM_ID_SAFESETID:
name = "safesetid";
break;
case LSM_ID_LOCKDOWN:
name = "lockdown";
break;
case LSM_ID_BPF:
name = "bpf";
break;
case LSM_ID_LANDLOCK:
name = "landlock";
break;
case LSM_ID_IMA:
name = "ima";
break;
case LSM_ID_EVM:
name = "evm";
break;
case LSM_ID_IPE:
name = "ipe";
break;
default:
name = "INVALID";
break;
}
ASSERT_EQ(0, strncmp(cp, name, strlen(name)));
cp += strlen(name) + 1;
}
free(sysfs_lsms);
free(syscall_lsms);
}
TEST_HARNESS_MAIN
|
