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/*
* Copyright (C) 2019 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 <stddef.h>
#include <stdint.h>
#include <string.h>
#include <chrono>
#include <android-base/file.h>
#include <android-base/unique_fd.h>
#include <libdm/dm_table.h>
#include <libdm/loop_control.h>
#include "test_util.h"
using namespace android;
using namespace android::base;
using namespace android::dm;
using namespace std;
using namespace std::chrono_literals;
/*
* This test aims at making the library crash, so these functions are not
* really useful.
* Keeping them here for future use.
*/
template <class T, class C>
void ASSERT_EQ(const T& /*a*/, const C& /*b*/) {
// if (a != b) {}
}
template <class T>
void ASSERT_FALSE(const T& /*a*/) {
// if (a) {}
}
template <class T, class C>
void ASSERT_GE(const T& /*a*/, const C& /*b*/) {
// if (a < b) {}
}
template <class T, class C>
void ASSERT_NE(const T& /*a*/, const C& /*b*/) {
// if (a == b) {}
}
template <class T>
void ASSERT_TRUE(const T& /*a*/) {
// if (!a) {}
}
template <class T, class C>
void EXPECT_EQ(const T& a, const C& b) {
ASSERT_EQ(a, b);
}
template <class T>
void EXPECT_TRUE(const T& a) {
ASSERT_TRUE(a);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
uint64_t val[6];
if (size != sizeof(val)) {
return 0;
}
memcpy(&val, &data[0], sizeof(*val));
unique_fd tmp1(CreateTempFile("file_1", 4096));
ASSERT_GE(tmp1, 0);
unique_fd tmp2(CreateTempFile("file_2", 4096));
ASSERT_GE(tmp2, 0);
LoopDevice loop_a(tmp1, 10s);
ASSERT_TRUE(loop_a.valid());
LoopDevice loop_b(tmp2, 10s);
ASSERT_TRUE(loop_b.valid());
// Define a 2-sector device, with each sector mapping to the first sector
// of one of our loop devices.
DmTable table;
ASSERT_TRUE(table.Emplace<DmTargetLinear>(val[0], val[1], loop_a.device(), val[2]));
ASSERT_TRUE(table.Emplace<DmTargetLinear>(val[3], val[4], loop_b.device(), val[5]));
ASSERT_TRUE(table.valid());
ASSERT_EQ(2u, table.num_sectors());
TempDevice dev("libdm-test-dm-linear", table);
ASSERT_TRUE(dev.valid());
ASSERT_FALSE(dev.path().empty());
auto& dm = DeviceMapper::Instance();
dev_t dev_number;
ASSERT_TRUE(dm.GetDeviceNumber(dev.name(), &dev_number));
ASSERT_NE(dev_number, 0);
std::string dev_string;
ASSERT_TRUE(dm.GetDeviceString(dev.name(), &dev_string));
ASSERT_FALSE(dev_string.empty());
// Test GetTableStatus.
vector<DeviceMapper::TargetInfo> targets;
ASSERT_TRUE(dm.GetTableStatus(dev.name(), &targets));
ASSERT_EQ(targets.size(), 2);
EXPECT_EQ(strcmp(targets[0].spec.target_type, "linear"), 0);
EXPECT_TRUE(targets[0].data.empty());
EXPECT_EQ(targets[0].spec.sector_start, 0);
EXPECT_EQ(targets[0].spec.length, 1);
EXPECT_EQ(strcmp(targets[1].spec.target_type, "linear"), 0);
EXPECT_TRUE(targets[1].data.empty());
EXPECT_EQ(targets[1].spec.sector_start, 1);
EXPECT_EQ(targets[1].spec.length, 1);
// Test GetTargetType().
EXPECT_EQ(DeviceMapper::GetTargetType(targets[0].spec), std::string{"linear"});
EXPECT_EQ(DeviceMapper::GetTargetType(targets[1].spec), std::string{"linear"});
// Normally the TestDevice destructor would delete this, but at least one
// test should ensure that device deletion works.
ASSERT_TRUE(dev.Destroy());
return 0;
}
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