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
|
/*
* Copyright (C) 2021 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 <gtest/gtest.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <unistd.h>
#if defined(__BIONIC__)
#include <sys/pidfd.h>
#endif
#include <android-base/silent_death_test.h>
#include <android-base/unique_fd.h>
using android::base::unique_fd;
using namespace std::chrono_literals;
using pidfd_DeathTest = SilentDeathTest;
TEST(pidfd, pidfd_open) {
#if defined(__BIONIC__)
pid_t child = fork();
ASSERT_NE(-1, child);
if (child == 0) {
_exit(42);
}
unique_fd pidfd(pidfd_open(child, 0));
if (pidfd.get() == -1) {
ASSERT_EQ(ENOSYS, errno);
GTEST_SKIP() << "pidfd_open not available";
}
siginfo_t siginfo;
int rc = waitid(P_PIDFD, pidfd.get(), &siginfo, WEXITED);
if (rc == -1) {
ASSERT_EQ(EINVAL, errno) << strerror(errno);
GTEST_SKIP() << "P_PIDFD not available";
}
ASSERT_EQ(child, siginfo.si_pid);
#endif
}
TEST(pidfd, pidfd_getfd) {
#if defined(__BIONIC__)
unique_fd r, w;
ASSERT_TRUE(android::base::Pipe(&r, &w));
unique_fd self(pidfd_open(getpid(), 0));
if (self.get() == -1) {
ASSERT_EQ(ENOSYS, errno);
GTEST_SKIP() << "pidfd_open not available";
}
unique_fd dup(pidfd_getfd(self.get(), r.get(), 0));
if (dup.get() == -1) {
ASSERT_EQ(ENOSYS, errno) << strerror(errno);
GTEST_SKIP() << "pidfd_getfd not available";
}
ASSERT_NE(r.get(), dup.get());
ASSERT_EQ(3, write(w.get(), "foo", 3));
char buf[4];
ASSERT_EQ(3, read(dup.get(), buf, sizeof(buf)));
ASSERT_EQ(0, memcmp(buf, "foo", 3));
#endif
}
TEST_F(pidfd_DeathTest, pidfd_send_signal) {
#if defined(__BIONIC__)
unique_fd self(pidfd_open(getpid(), 0));
if (self.get() == -1) {
ASSERT_EQ(ENOSYS, errno);
GTEST_SKIP() << "pidfd_open not available";
}
if (pidfd_send_signal(self.get(), 0, nullptr, 0) == -1) {
ASSERT_EQ(ENOSYS, errno);
GTEST_SKIP() << "pidfd_send_signal not available";
}
ASSERT_EXIT(({
// gtest will fork a child off for ASSERT_EXIT: `self` refers to the parent.
unique_fd child(pidfd_open(getpid(), 0));
pidfd_send_signal(child.get(), SIGINT, nullptr, 0);
}),
testing::KilledBySignal(SIGINT), "");
#endif
}
|
