1 /*
2 * Copyright (C) 2015 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 "oat_file.h"
18
19 #include <dlfcn.h>
20
21 #include <string>
22
23 #include "common_runtime_test.h"
24 #include "dexopt_test.h"
25 #include "gtest/gtest.h"
26 #include "scoped_thread_state_change-inl.h"
27 #include "vdex_file.h"
28
29 namespace art HIDDEN {
30
31 class OatFileTest : public DexoptTest {};
32
TEST_F(OatFileTest,LoadOat)33 TEST_F(OatFileTest, LoadOat) {
34 std::string dex_location = GetScratchDir() + "/LoadOat.jar";
35
36 Copy(GetDexSrc1(), dex_location);
37 GenerateOatForTest(dex_location.c_str(), CompilerFilter::kSpeed);
38
39 std::string oat_location;
40 std::string error_msg;
41 ASSERT_TRUE(OatFileAssistant::DexLocationToOatFilename(
42 dex_location, kRuntimeISA, &oat_location, &error_msg))
43 << error_msg;
44 std::unique_ptr<OatFile> odex_file(OatFile::Open(/*zip_fd=*/-1,
45 oat_location,
46 oat_location,
47 /*executable=*/false,
48 /*low_4gb=*/false,
49 dex_location,
50 &error_msg));
51 ASSERT_TRUE(odex_file.get() != nullptr);
52
53 // Check that the vdex file was loaded in the reserved space of odex file.
54 EXPECT_EQ(odex_file->GetVdexFile()->Begin(), odex_file->VdexBegin());
55 }
56
TEST_F(OatFileTest,ChangingMultiDexUncompressed)57 TEST_F(OatFileTest, ChangingMultiDexUncompressed) {
58 std::string dex_location = GetScratchDir() + "/MultiDexUncompressedAligned.jar";
59
60 Copy(GetTestDexFileName("MultiDexUncompressedAligned"), dex_location);
61 GenerateOatForTest(dex_location.c_str(), CompilerFilter::kVerify);
62
63 std::string oat_location;
64 std::string error_msg;
65 ASSERT_TRUE(OatFileAssistant::DexLocationToOatFilename(
66 dex_location, kRuntimeISA, &oat_location, &error_msg))
67 << error_msg;
68
69 // Ensure we can load that file. Just a precondition.
70 {
71 std::unique_ptr<OatFile> odex_file(OatFile::Open(/*zip_fd=*/-1,
72 oat_location,
73 oat_location,
74 /*executable=*/false,
75 /*low_4gb=*/false,
76 dex_location,
77 &error_msg));
78 ASSERT_TRUE(odex_file != nullptr);
79 ASSERT_EQ(2u, odex_file->GetOatDexFiles().size());
80 }
81
82 // Now replace the source.
83 Copy(GetTestDexFileName("MainUncompressedAligned"), dex_location);
84
85 // And try to load again.
86 std::unique_ptr<OatFile> odex_file(OatFile::Open(/*zip_fd=*/-1,
87 oat_location,
88 oat_location,
89 /*executable=*/false,
90 /*low_4gb=*/false,
91 dex_location,
92 &error_msg));
93 EXPECT_TRUE(odex_file == nullptr);
94 EXPECT_NE(std::string::npos, error_msg.find("expected 2 uncompressed dex files, but found 1"))
95 << error_msg;
96 }
97
TEST_F(OatFileTest,DlOpenLoad)98 TEST_F(OatFileTest, DlOpenLoad) {
99 std::string dex_location = GetScratchDir() + "/LoadOat.jar";
100
101 Copy(GetDexSrc1(), dex_location);
102 GenerateOatForTest(dex_location.c_str(), CompilerFilter::kSpeed);
103
104 std::string oat_location;
105 std::string error_msg;
106 ASSERT_TRUE(OatFileAssistant::DexLocationToOatFilename(
107 dex_location, kRuntimeISA, &oat_location, &error_msg))
108 << error_msg;
109
110 // Clear previous errors if any.
111 dlerror();
112 error_msg.clear();
113 std::unique_ptr<OatFile> odex_file(OatFile::Open(/*zip_fd=*/-1,
114 oat_location,
115 oat_location,
116 /*executable=*/true,
117 /*low_4gb=*/false,
118 dex_location,
119 &error_msg));
120 ASSERT_NE(odex_file.get(), nullptr) << error_msg;
121
122 #ifdef __GLIBC__
123 if (!error_msg.empty()) {
124 // If a valid oat file was returned but there was an error message, then dlopen failed
125 // but the backup ART ELF loader successfully loaded the oat file.
126 // The only expected reason for this is a bug in glibc that prevents loading dynamic
127 // shared objects with a read-only dynamic section:
128 // https://sourceware.org/bugzilla/show_bug.cgi?id=28340.
129 ASSERT_TRUE(error_msg == "DlOpen does not support read-only .dynamic section.") << error_msg;
130 GTEST_SKIP() << error_msg;
131 }
132 #else
133 // If a valid oat file was returned with no error message, then dlopen was successful.
134 ASSERT_TRUE(error_msg.empty()) << error_msg;
135 #endif
136
137 const char *dlerror_msg = dlerror();
138 ASSERT_EQ(dlerror_msg, nullptr) << dlerror_msg;
139
140 // Ensure that the oat file is loaded with dlopen by requesting information about it
141 // using dladdr.
142 Dl_info info;
143 ASSERT_NE(dladdr(odex_file->Begin(), &info), 0);
144 EXPECT_STREQ(info.dli_fname, oat_location.c_str())
145 << "dli_fname: " << info.dli_fname
146 << ", location: " << oat_location;
147 EXPECT_STREQ(info.dli_sname, "oatdata") << info.dli_sname;
148 }
149
150 } // namespace art
151