3b38b12071
While this does not capture all nuances of optional programs, go devices, etc. it should be a useful starting point to tell us if something is really unexpected. Test: test-only change Test: passes on flame running qt-dev build (no-op) Test: passes on flame running RQ3A build Test: passes on raven running SP2A build Test: passes on barbet running aosp/master Change-Id: I43ff8c61c861c008cce459d2dcb487bb536c8da8
146 lines
4.5 KiB
C++
146 lines
4.5 KiB
C++
/*
|
|
* Copyright 2022 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.
|
|
*
|
|
* bpf_existence_test.cpp - checks that the device runs expected BPF programs
|
|
*/
|
|
|
|
#include <cstdint>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <android-base/strings.h>
|
|
#include <android-base/properties.h>
|
|
#include <android-modules-utils/sdk_level.h>
|
|
|
|
#include <gtest/gtest.h>
|
|
|
|
using std::find;
|
|
using std::string;
|
|
using std::vector;
|
|
|
|
using android::modules::sdklevel::IsAtLeastR;
|
|
using android::modules::sdklevel::IsAtLeastS;
|
|
using android::modules::sdklevel::IsAtLeastT;
|
|
|
|
class BpfExistenceTest : public ::testing::Test {
|
|
};
|
|
|
|
static const vector<string> INTRODUCED_R = {
|
|
"/sys/fs/bpf/prog_offload_schedcls_ingress_tether_ether",
|
|
"/sys/fs/bpf/prog_offload_schedcls_ingress_tether_rawip",
|
|
};
|
|
|
|
static const vector<string> INTRODUCED_S = {
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_downstream4_ether",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_downstream4_rawip",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_downstream6_ether",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_downstream6_rawip",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_upstream4_ether",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_upstream4_rawip",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_upstream6_ether",
|
|
"/sys/fs/bpf/tethering/prog_offload_schedcls_tether_upstream6_rawip",
|
|
};
|
|
|
|
static const vector<string> REMOVED_S = {
|
|
"/sys/fs/bpf/prog_offload_schedcls_ingress_tether_ether",
|
|
"/sys/fs/bpf/prog_offload_schedcls_ingress_tether_rawip",
|
|
};
|
|
|
|
static const vector<string> INTRODUCED_T = {
|
|
};
|
|
|
|
static const vector<string> REMOVED_T = {
|
|
};
|
|
|
|
void addAll(vector<string>* a, const vector<string>& b) {
|
|
a->insert(a->end(), b.begin(), b.end());
|
|
}
|
|
|
|
void removeAll(vector<string>* a, const vector<string> b) {
|
|
for (const auto& toRemove : b) {
|
|
auto iter = find(a->begin(), a->end(), toRemove);
|
|
while (iter != a->end()) {
|
|
a->erase(iter);
|
|
iter = find(a->begin(), a->end(), toRemove);
|
|
}
|
|
}
|
|
}
|
|
|
|
void getFileLists(vector<string>* expected, vector<string>* unexpected) {
|
|
unexpected->clear();
|
|
expected->clear();
|
|
|
|
addAll(unexpected, INTRODUCED_R);
|
|
addAll(unexpected, INTRODUCED_S);
|
|
addAll(unexpected, INTRODUCED_T);
|
|
|
|
if (IsAtLeastR()) {
|
|
addAll(expected, INTRODUCED_R);
|
|
removeAll(unexpected, INTRODUCED_R);
|
|
// Nothing removed in R.
|
|
}
|
|
|
|
if (IsAtLeastS()) {
|
|
addAll(expected, INTRODUCED_S);
|
|
removeAll(expected, REMOVED_S);
|
|
|
|
addAll(unexpected, REMOVED_S);
|
|
removeAll(unexpected, INTRODUCED_S);
|
|
}
|
|
|
|
// Nothing added or removed in SCv2.
|
|
|
|
if (IsAtLeastT()) {
|
|
addAll(expected, INTRODUCED_T);
|
|
removeAll(expected, REMOVED_T);
|
|
|
|
addAll(unexpected, REMOVED_T);
|
|
removeAll(unexpected, INTRODUCED_T);
|
|
}
|
|
}
|
|
|
|
void checkFiles() {
|
|
vector<string> mustExist;
|
|
vector<string> mustNotExist;
|
|
|
|
getFileLists(&mustExist, &mustNotExist);
|
|
|
|
for (const auto& file : mustExist) {
|
|
EXPECT_EQ(0, access(file.c_str(), R_OK)) << file << " does not exist";
|
|
}
|
|
for (const auto& file : mustNotExist) {
|
|
int ret = access(file.c_str(), R_OK);
|
|
int err = errno;
|
|
EXPECT_EQ(-1, ret) << file << " unexpectedly exists";
|
|
if (ret == -1) {
|
|
EXPECT_EQ(ENOENT, err) << " accessing " << file << " failed with errno " << err;
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_F(BpfExistenceTest, TestPrograms) {
|
|
// Pre-flight check to ensure test has been updated.
|
|
uint64_t buildVersionSdk = android::base::GetUintProperty<uint64_t>("ro.build.version.sdk", 0);
|
|
ASSERT_NE(0, buildVersionSdk) << "Unable to determine device SDK version";
|
|
if (buildVersionSdk > 33 && buildVersionSdk != 10000) {
|
|
FAIL() << "Unknown OS version " << buildVersionSdk << ", please update this test";
|
|
}
|
|
|
|
// Only unconfined root is guaranteed to be able to access everything in /sys/fs/bpf.
|
|
ASSERT_EQ(0, getuid()) << "This test must run as root.";
|
|
|
|
checkFiles();
|
|
}
|