1 /*
2 * Copyright (C) 2021 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <binder/MemoryHeapBase.h>
18 #include <cutils/ashmem.h>
19 #include <fcntl.h>
20
21 #include <gtest/gtest.h>
22 using namespace android;
23 #ifdef __BIONIC__
TEST(MemoryHeapBase,ForceMemfdRespected)24 TEST(MemoryHeapBase, ForceMemfdRespected) {
25 auto mHeap = sp<MemoryHeapBase>::make(10, MemoryHeapBase::FORCE_MEMFD, "Test mapping");
26 ASSERT_NE(mHeap.get(), nullptr);
27 int fd = mHeap->getHeapID();
28 EXPECT_NE(fd, -1);
29 EXPECT_FALSE(ashmem_valid(fd));
30 EXPECT_NE(fcntl(fd, F_GET_SEALS), -1);
31 }
32
TEST(MemoryHeapBase,MemfdSealed)33 TEST(MemoryHeapBase, MemfdSealed) {
34 auto mHeap = sp<MemoryHeapBase>::make(8192,
35 MemoryHeapBase::FORCE_MEMFD,
36 "Test mapping");
37 ASSERT_NE(mHeap.get(), nullptr);
38 int fd = mHeap->getHeapID();
39 EXPECT_NE(fd, -1);
40 EXPECT_EQ(fcntl(fd, F_GET_SEALS), F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL);
41 EXPECT_EQ(ftruncate(fd, 4096), -1);
42 }
43
TEST(MemoryHeapBase,MemfdUnsealed)44 TEST(MemoryHeapBase, MemfdUnsealed) {
45 auto mHeap = sp<MemoryHeapBase>::make(8192,
46 MemoryHeapBase::FORCE_MEMFD |
47 MemoryHeapBase::MEMFD_ALLOW_SEALING,
48 "Test mapping");
49 ASSERT_NE(mHeap.get(), nullptr);
50 int fd = mHeap->getHeapID();
51 EXPECT_NE(fd, -1);
52 EXPECT_EQ(fcntl(fd, F_GET_SEALS), F_SEAL_GROW | F_SEAL_SHRINK);
53 EXPECT_EQ(ftruncate(fd, 4096), -1);
54 }
55
TEST(MemoryHeapBase,MemfdSealedProtected)56 TEST(MemoryHeapBase, MemfdSealedProtected) {
57 auto mHeap = sp<MemoryHeapBase>::make(8192,
58 MemoryHeapBase::FORCE_MEMFD |
59 MemoryHeapBase::READ_ONLY,
60 "Test mapping");
61 ASSERT_NE(mHeap.get(), nullptr);
62 int fd = mHeap->getHeapID();
63 EXPECT_NE(fd, -1);
64 EXPECT_EQ(fcntl(fd, F_GET_SEALS),
65 F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL | F_SEAL_FUTURE_WRITE);
66 EXPECT_EQ(ftruncate(fd, 4096), -1);
67 }
68
TEST(MemoryHeapBase,MemfdUnsealedProtected)69 TEST(MemoryHeapBase, MemfdUnsealedProtected) {
70 auto mHeap = sp<MemoryHeapBase>::make(8192,
71 MemoryHeapBase::FORCE_MEMFD |
72 MemoryHeapBase::READ_ONLY |
73 MemoryHeapBase::MEMFD_ALLOW_SEALING,
74 "Test mapping");
75 ASSERT_NE(mHeap.get(), nullptr);
76 int fd = mHeap->getHeapID();
77 EXPECT_NE(fd, -1);
78 EXPECT_EQ(fcntl(fd, F_GET_SEALS), F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_FUTURE_WRITE);
79 EXPECT_EQ(ftruncate(fd, 4096), -1);
80 }
81
82 #else
TEST(MemoryHeapBase,HostMemfdExpected)83 TEST(MemoryHeapBase, HostMemfdExpected) {
84 auto mHeap = sp<MemoryHeapBase>::make(8192,
85 MemoryHeapBase::READ_ONLY,
86 "Test mapping");
87 ASSERT_NE(mHeap.get(), nullptr);
88 int fd = mHeap->getHeapID();
89 void* ptr = mHeap->getBase();
90 EXPECT_NE(ptr, MAP_FAILED);
91 EXPECT_TRUE(ashmem_valid(fd));
92 EXPECT_EQ(mHeap->getFlags(), MemoryHeapBase::READ_ONLY);
93 }
94
TEST(MemoryHeapBase,HostMemfdException)95 TEST(MemoryHeapBase,HostMemfdException) {
96 auto mHeap = sp<MemoryHeapBase>::make(8192,
97 MemoryHeapBase::FORCE_MEMFD |
98 MemoryHeapBase::READ_ONLY |
99 MemoryHeapBase::MEMFD_ALLOW_SEALING,
100 "Test mapping");
101 ASSERT_NE(mHeap.get(), nullptr);
102 int fd = mHeap->getHeapID();
103 void* ptr = mHeap->getBase();
104 EXPECT_EQ(mHeap->getFlags(), MemoryHeapBase::READ_ONLY);
105 EXPECT_TRUE(ashmem_valid(fd));
106 EXPECT_NE(ptr, MAP_FAILED);
107 }
108
109 #endif
110