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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "exec_utils.h"
#include <unistd.h>
#include "android-base/stringprintf.h"
#include "base/file_utils.h"
#include "base/memory_tool.h"
#include "common_runtime_test.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace art {
std::string PrettyArguments(const char* signature);
std::string PrettyReturnType(const char* signature);
bool IsPidfdSupported() {
#ifdef __BIONIC__
return true;
#else
constexpr int SYS_pidfd_open = 434;
int pidfd = syscall(SYS_pidfd_open, getpid(), /*flags=*/0);
if (pidfd < 0) {
return false;
}
close(pidfd);
return true;
#endif
}
class ExecUtilsTest : public CommonRuntimeTest {};
TEST_F(ExecUtilsTest, ExecSuccess) {
std::vector<std::string> command;
if (kIsTargetBuild) {
std::string android_root(GetAndroidRoot());
command.push_back(android_root + "/bin/id");
} else {
command.push_back("/usr/bin/id");
}
std::string error_msg;
// Historical note: Running on Valgrind failed due to some memory
// that leaks in thread alternate signal stacks.
EXPECT_TRUE(Exec(command, &error_msg));
EXPECT_EQ(0U, error_msg.size()) << error_msg;
}
TEST_F(ExecUtilsTest, ExecError) {
std::vector<std::string> command;
command.push_back("bogus");
std::string error_msg;
// Historical note: Running on Valgrind failed due to some memory
// that leaks in thread alternate signal stacks.
EXPECT_FALSE(Exec(command, &error_msg));
EXPECT_FALSE(error_msg.empty());
}
TEST_F(ExecUtilsTest, EnvSnapshotAdditionsAreNotVisible) {
static constexpr const char* kModifiedVariable = "EXEC_SHOULD_NOT_EXPORT_THIS";
static constexpr int kOverwrite = 1;
// Set an variable in the current environment.
EXPECT_EQ(setenv(kModifiedVariable, "NEVER", kOverwrite), 0);
// Test that it is not exported.
std::vector<std::string> command;
if (kIsTargetBuild) {
std::string android_root(GetAndroidRoot());
command.push_back(android_root + "/bin/printenv");
} else {
command.push_back("/usr/bin/printenv");
}
command.push_back(kModifiedVariable);
std::string error_msg;
// Historical note: Running on Valgrind failed due to some memory
// that leaks in thread alternate signal stacks.
EXPECT_FALSE(Exec(command, &error_msg));
EXPECT_NE(0U, error_msg.size()) << error_msg;
}
TEST_F(ExecUtilsTest, EnvSnapshotDeletionsAreNotVisible) {
static constexpr const char* kDeletedVariable = "PATH";
static constexpr int kOverwrite = 1;
// Save the variable's value.
const char* save_value = getenv(kDeletedVariable);
EXPECT_NE(save_value, nullptr);
// Delete the variable.
EXPECT_EQ(unsetenv(kDeletedVariable), 0);
// Test that it is not exported.
std::vector<std::string> command;
if (kIsTargetBuild) {
std::string android_root(GetAndroidRoot());
command.push_back(android_root + "/bin/printenv");
} else {
command.push_back("/usr/bin/printenv");
}
command.push_back(kDeletedVariable);
std::string error_msg;
// Historical note: Running on Valgrind failed due to some memory
// that leaks in thread alternate signal stacks.
EXPECT_TRUE(Exec(command, &error_msg));
EXPECT_EQ(0U, error_msg.size()) << error_msg;
// Restore the variable's value.
EXPECT_EQ(setenv(kDeletedVariable, save_value, kOverwrite), 0);
}
static std::vector<std::string> SleepCommand(int sleep_seconds) {
std::vector<std::string> command;
if (kIsTargetBuild) {
command.push_back(GetAndroidRoot() + "/bin/sleep");
} else {
command.push_back("/bin/sleep");
}
command.push_back(android::base::StringPrintf("%d", sleep_seconds));
return command;
}
TEST_F(ExecUtilsTest, ExecTimeout) {
if (!IsPidfdSupported()) {
GTEST_SKIP() << "pidfd not supported";
}
static constexpr int kSleepSeconds = 5;
static constexpr int kWaitSeconds = 1;
std::vector<std::string> command = SleepCommand(kSleepSeconds);
std::string error_msg;
bool timed_out;
ASSERT_EQ(ExecAndReturnCode(command, kWaitSeconds, &timed_out, &error_msg), -1);
EXPECT_TRUE(timed_out);
}
TEST_F(ExecUtilsTest, ExecNoTimeout) {
if (!IsPidfdSupported()) {
GTEST_SKIP() << "pidfd not supported";
}
static constexpr int kSleepSeconds = 1;
static constexpr int kWaitSeconds = 5;
std::vector<std::string> command = SleepCommand(kSleepSeconds);
std::string error_msg;
bool timed_out;
ASSERT_EQ(ExecAndReturnCode(command, kWaitSeconds, &timed_out, &error_msg), 0);
EXPECT_FALSE(timed_out);
}
TEST_F(ExecUtilsTest, ExecTimeoutNotSupported) {
if (IsPidfdSupported()) {
GTEST_SKIP() << "pidfd supported";
}
std::string error_msg;
bool timed_out;
ASSERT_EQ(ExecAndReturnCode({"command"}, /*timeout_sec=*/0, &timed_out, &error_msg), -1);
EXPECT_THAT(error_msg, testing::HasSubstr("pidfd_open failed for pid"));
}
} // namespace art
|