1 //===-- sanitizer_ioctl_test.cpp ------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Tests for ioctl interceptor implementation in sanitizer_common.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "sanitizer_common/sanitizer_platform.h"
14 #if SANITIZER_LINUX
15
16 #include <linux/input.h>
17 #include <vector>
18
19 #include "interception/interception.h"
20 #include "sanitizer_test_utils.h"
21 #include "sanitizer_common/sanitizer_platform_limits_posix.h"
22 #include "sanitizer_common/sanitizer_common.h"
23 #include "gtest/gtest.h"
24
25
26 using namespace __sanitizer;
27
28 #define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, sz) \
29 do { \
30 (void) ctx; \
31 (void) ptr; \
32 (void) sz; \
33 } while (0)
34 #define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sz) \
35 do { \
36 (void) ctx; \
37 (void) ptr; \
38 (void) sz; \
39 } while (0)
40
41 #include "sanitizer_common/sanitizer_common_interceptors_ioctl.inc"
42
43 static struct IoctlInit {
IoctlInitIoctlInit44 IoctlInit() {
45 ioctl_init();
46 // Avoid unused function warnings.
47 (void)&ioctl_common_pre;
48 (void)&ioctl_common_post;
49 (void)&ioctl_decode;
50 }
51 } ioctl_static_initializer;
52
TEST(SanitizerIoctl,Fixup)53 TEST(SanitizerIoctl, Fixup) {
54 EXPECT_EQ((unsigned)FIONBIO, ioctl_request_fixup(FIONBIO));
55
56 EXPECT_EQ(EVIOCGBIT(0, 0), ioctl_request_fixup(EVIOCGBIT(0, 16)));
57 EXPECT_EQ(EVIOCGBIT(0, 0), ioctl_request_fixup(EVIOCGBIT(1, 16)));
58 EXPECT_EQ(EVIOCGBIT(0, 0), ioctl_request_fixup(EVIOCGBIT(1, 17)));
59 EXPECT_EQ(EVIOCGBIT(0, 0), ioctl_request_fixup(EVIOCGBIT(31, 16)));
60 EXPECT_NE(EVIOCGBIT(0, 0), ioctl_request_fixup(EVIOCGBIT(32, 16)));
61
62 EXPECT_EQ(EVIOCGABS(0), ioctl_request_fixup(EVIOCGABS(0)));
63 EXPECT_EQ(EVIOCGABS(0), ioctl_request_fixup(EVIOCGABS(5)));
64 EXPECT_EQ(EVIOCGABS(0), ioctl_request_fixup(EVIOCGABS(63)));
65 EXPECT_NE(EVIOCGABS(0), ioctl_request_fixup(EVIOCGABS(64)));
66
67 EXPECT_EQ(EVIOCSABS(0), ioctl_request_fixup(EVIOCSABS(0)));
68 EXPECT_EQ(EVIOCSABS(0), ioctl_request_fixup(EVIOCSABS(5)));
69 EXPECT_EQ(EVIOCSABS(0), ioctl_request_fixup(EVIOCSABS(63)));
70 EXPECT_NE(EVIOCSABS(0), ioctl_request_fixup(EVIOCSABS(64)));
71
72 const ioctl_desc *desc = ioctl_lookup(EVIOCGKEY(16));
73 EXPECT_NE((void *)0, desc);
74 EXPECT_EQ(EVIOCGKEY(0), desc->req);
75 }
76
77 // Test decoding KVM ioctl numbers.
TEST(SanitizerIoctl,KVM_GET_MP_STATE)78 TEST(SanitizerIoctl, KVM_GET_MP_STATE) {
79 ioctl_desc desc;
80 unsigned int desc_value = SANITIZER_MIPS ? 0x4004ae98U : 0x8004ae98U;
81 bool res = ioctl_decode(desc_value, &desc);
82 EXPECT_TRUE(res);
83 EXPECT_EQ(ioctl_desc::WRITE, desc.type);
84 EXPECT_EQ(4U, desc.size);
85 }
86
TEST(SanitizerIoctl,KVM_GET_LAPIC)87 TEST(SanitizerIoctl, KVM_GET_LAPIC) {
88 ioctl_desc desc;
89 unsigned int desc_value = SANITIZER_MIPS ? 0x4400ae8eU : 0x8400ae8eU;
90 bool res = ioctl_decode(desc_value, &desc);
91 EXPECT_TRUE(res);
92 EXPECT_EQ(ioctl_desc::WRITE, desc.type);
93 EXPECT_EQ(1024U, desc.size);
94 }
95
TEST(SanitizerIoctl,KVM_GET_MSR_INDEX_LIST)96 TEST(SanitizerIoctl, KVM_GET_MSR_INDEX_LIST) {
97 ioctl_desc desc;
98 bool res = ioctl_decode(0xc004ae02U, &desc);
99 EXPECT_TRUE(res);
100 EXPECT_EQ(ioctl_desc::READWRITE, desc.type);
101 EXPECT_EQ(4U, desc.size);
102 }
103
104 #endif // SANITIZER_LINUX
105