sandboxed-api/sandboxed_api/sandbox2/limits_test.cc

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// Copyright 2019 Google LLC
//
// 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
//
// https://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 "sandboxed_api/sandbox2/limits.h"
#include <csignal>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "gtest/gtest.h"
#include "sandboxed_api/sandbox2/executor.h"
#include "sandboxed_api/sandbox2/result.h"
#include "sandboxed_api/sandbox2/sandbox2.h"
#include "sandboxed_api/testing.h"
#include "sandboxed_api/util/status_matchers.h"
namespace sandbox2 {
namespace {
using ::sapi::CreateDefaultPermissiveTestPolicy;
using ::sapi::GetTestSourcePath;
std::string GetLimitsTestcaseBinPath() {
return GetTestSourcePath("sandbox2/testcases/limits");
}
TEST(LimitsTest, RLimitASMmapUnderLimit) {
SKIP_SANITIZERS;
const std::string path = GetLimitsTestcaseBinPath();
std::vector<std::string> args = {path, "1"}; // mmap(1 MiB)
auto executor = std::make_unique<sandbox2::Executor>(path, args);
executor->limits()->set_rlimit_as(100ULL << 20); // 100 MiB
SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
CreateDefaultPermissiveTestPolicy(path).TryBuild());
sandbox2::Sandbox2 s2(std::move(executor), std::move(policy));
auto result = s2.Run();
ASSERT_EQ(result.final_status(), sandbox2::Result::OK);
EXPECT_EQ(result.reason_code(), 0);
}
TEST(LimitsTest, RLimitASMmapAboveLimit) {
SKIP_SANITIZERS;
const std::string path = GetLimitsTestcaseBinPath();
std::vector<std::string> args = {path, "2"}; // mmap(100 MiB)
auto executor = std::make_unique<sandbox2::Executor>(path, args);
executor->limits()->set_rlimit_as(100ULL << 20); // 100 MiB
SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
CreateDefaultPermissiveTestPolicy(path).TryBuild());
sandbox2::Sandbox2 s2(std::move(executor), std::move(policy));
auto result = s2.Run();
ASSERT_EQ(result.final_status(), sandbox2::Result::OK);
EXPECT_EQ(result.reason_code(), 0);
}
TEST(LimitsTest, RLimitASAllocaSmallUnderLimit) {
SKIP_SANITIZERS;
const std::string path = GetLimitsTestcaseBinPath();
std::vector<std::string> args = {path, "3"}; // alloca(1 MiB)
auto executor = std::make_unique<sandbox2::Executor>(path, args);
executor->limits()->set_rlimit_as(100ULL << 20); // 100 MiB
SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
CreateDefaultPermissiveTestPolicy(path).TryBuild());
sandbox2::Sandbox2 s2(std::move(executor), std::move(policy));
auto result = s2.Run();
ASSERT_EQ(result.final_status(), sandbox2::Result::OK);
EXPECT_EQ(result.reason_code(), 0);
}
TEST(LimitsTest, RLimitASAllocaBigUnderLimit) {
SKIP_SANITIZERS;
const std::string path = GetLimitsTestcaseBinPath();
std::vector<std::string> args = {path, "4"}; // alloca(8 MiB)
auto executor = std::make_unique<sandbox2::Executor>(path, args);
executor->limits()->set_rlimit_as(100ULL << 20); // 100 MiB
SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
CreateDefaultPermissiveTestPolicy(path).TryBuild());
sandbox2::Sandbox2 s2(std::move(executor), std::move(policy));
auto result = s2.Run();
ASSERT_EQ(result.final_status(), sandbox2::Result::SIGNALED);
EXPECT_EQ(result.reason_code(), SIGSEGV);
}
TEST(LimitsTest, RLimitASAllocaBigAboveLimit) {
SKIP_SANITIZERS;
const std::string path = GetLimitsTestcaseBinPath();
std::vector<std::string> args = {path, "5"}; // alloca(100 MiB)
auto executor = std::make_unique<sandbox2::Executor>(path, args);
executor->limits()->set_rlimit_as(100ULL << 20); // 100 MiB
SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
CreateDefaultPermissiveTestPolicy(path).TryBuild());
sandbox2::Sandbox2 s2(std::move(executor), std::move(policy));
auto result = s2.Run();
ASSERT_EQ(result.final_status(), sandbox2::Result::SIGNALED);
EXPECT_EQ(result.reason_code(), SIGSEGV);
}
} // namespace
} // namespace sandbox2