platform_bionic/tests/fdtrack_test.cpp
Josh Gao 7596250722 Move fdtrack APIs to LLNDK.
Test: logcat -c; fdtrack_test; logcat -d
Change-Id: Ib6f75a7c8bbc4d6efa0708dcbbfe4ad3c0641022
2020-01-30 13:55:10 -08:00

120 lines
3.2 KiB
C++

/*
* Copyright (C) 2020 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 <dirent.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#if defined(__BIONIC__)
#include "platform/bionic/fdtrack.h"
#endif
#include <vector>
#include <android-base/unique_fd.h>
#if defined(__BIONIC__)
std::vector<android_fdtrack_event> FdtrackRun(void (*func)()) {
// Each bionic test is run in separate process, so we can safely use a static here.
static std::vector<android_fdtrack_event> events;
events.clear();
android_fdtrack_hook_t previous = nullptr;
android_fdtrack_hook_t hook = [](android_fdtrack_event* event) {
events.push_back(*event);
};
if (!android_fdtrack_compare_exchange_hook(&previous, hook)) {
errx(1, "failed to exchange hook: previous hook was %p", previous);
}
if (previous) {
errx(1, "hook was already registered?");
abort();
}
func();
if (!android_fdtrack_compare_exchange_hook(&hook, nullptr)) {
errx(1, "failed to reset hook");
}
return std::move(events);
}
#endif
TEST(fdtrack, open) {
#if defined(__BIONIC__)
static int fd = -1;
auto events = FdtrackRun([]() { fd = open("/dev/null", O_WRONLY | O_CLOEXEC); });
ASSERT_NE(-1, fd);
ASSERT_EQ(1U, events.size());
ASSERT_EQ(fd, events[0].fd);
ASSERT_EQ(ANDROID_FDTRACK_EVENT_TYPE_CREATE, events[0].type);
ASSERT_STREQ("open", events[0].data.create.function_name);
#endif
}
TEST(fdtrack, close) {
#if defined(__BIONIC__)
static int fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
ASSERT_NE(-1, fd);
auto events = FdtrackRun([]() { close(fd); });
ASSERT_EQ(1U, events.size());
ASSERT_EQ(fd, events[0].fd);
ASSERT_EQ(ANDROID_FDTRACK_EVENT_TYPE_CLOSE, events[0].type);
#endif
}
TEST(fdtrack, enable_disable) {
#if defined(__BIONIC__)
static int fd1 = -1;
static int fd2 = -1;
static int fd3 = -1;
auto events = FdtrackRun([]() {
if (!android_fdtrack_get_enabled()) {
errx(1, "fdtrack is disabled");
}
fd1 = open("/dev/null", O_WRONLY | O_CLOEXEC);
android_fdtrack_set_enabled(false);
fd2 = open("/dev/null", O_WRONLY | O_CLOEXEC);
android_fdtrack_set_enabled(true);
fd3 = open("/dev/null", O_WRONLY | O_CLOEXEC);
});
if (fd1 == -1 || fd2 == -1 || fd3 == -1) {
errx(1, "failed to open /dev/null");
}
ASSERT_EQ(2U, events.size());
ASSERT_EQ(fd1, events[0].fd);
ASSERT_EQ(ANDROID_FDTRACK_EVENT_TYPE_CREATE, events[0].type);
ASSERT_STREQ("open", events[0].data.create.function_name);
ASSERT_EQ(fd3, events[1].fd);
ASSERT_EQ(ANDROID_FDTRACK_EVENT_TYPE_CREATE, events[1].type);
ASSERT_STREQ("open", events[1].data.create.function_name);
#endif
}