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/*
* 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 <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include <iosfwd>
#include <memory>
#include <string>
#include <vector>
#include "android-base/stringprintf.h"
#include "base/bit_utils.h"
#include "base/common_art_test.h"
#include "base/os.h"
#include "base/unix_file/fd_file.h"
#include "odr_fs_utils.h"
namespace art {
namespace odrefresh {
class OdrFsUtilsTest : public CommonArtTest {};
namespace {
static bool CreateFile(const char* file_path, size_t bytes) {
std::unique_ptr<File> fp(OS::CreateEmptyFile(file_path));
if (!fp) {
return false;
}
std::vector<char> buffer(bytes, 0xa5);
if (!fp->WriteFully(buffer.data(), buffer.size())) {
fp->Erase();
return false;
}
if (fp->FlushClose() != 0) {
fp->Erase();
return false;
}
return true;
}
} // namespace
TEST_F(OdrFsUtilsTest, RemoveDirectory) {
ScratchDir scratch_dir(/*keep_files=*/false);
// Create some sub-directories and files
const std::string dir_paths[] = {
scratch_dir.GetPath() + "/a",
scratch_dir.GetPath() + "/b",
scratch_dir.GetPath() + "/b/c",
scratch_dir.GetPath() + "/d"
};
for (const auto& dir_path : dir_paths) {
ASSERT_EQ(0, mkdir(dir_path.c_str(), S_IRWXU));
}
const std::string file_paths[] = {
scratch_dir.GetPath() + "/zero.txt",
scratch_dir.GetPath() + "/a/one.txt",
scratch_dir.GetPath() + "/b/two.txt",
scratch_dir.GetPath() + "/b/c/three.txt",
scratch_dir.GetPath() + "/b/c/four.txt",
};
for (const auto& file_path : file_paths) {
ASSERT_TRUE(CreateFile(file_path.c_str(), 4096));
}
// Remove directory, all files and sub-directories
ASSERT_TRUE(RemoveDirectory(scratch_dir.GetPath()));
// Check nothing we created remains.
for (const auto& dir_path : dir_paths) {
ASSERT_FALSE(OS::DirectoryExists(dir_path.c_str()));
}
for (const auto& file_path : file_paths) {
ASSERT_FALSE(OS::FileExists(file_path.c_str(), true));
}
// And the original directory is also gone
ASSERT_FALSE(OS::DirectoryExists(scratch_dir.GetPath().c_str()));
}
TEST_F(OdrFsUtilsTest, EnsureDirectoryExistsBadPath) {
// Pick a path where not even a root test runner can write.
ASSERT_FALSE(EnsureDirectoryExists("/proc/unlikely/to/be/writable"));
}
TEST_F(OdrFsUtilsTest, EnsureDirectoryExistsEmptyPath) {
ASSERT_FALSE(EnsureDirectoryExists(""));
}
TEST_F(OdrFsUtilsTest, EnsureDirectoryExistsRelativePath) {
ASSERT_FALSE(EnsureDirectoryExists("a/b/c"));
}
TEST_F(OdrFsUtilsTest, EnsureDirectoryExistsSubDirs) {
ScratchDir scratch_dir(/*keep_files=*/false);
const char* relative_sub_dirs[] = {"a", "b/c", "d/e/f/"};
for (const char* relative_sub_dir : relative_sub_dirs) {
ASSERT_TRUE(EnsureDirectoryExists(scratch_dir.GetPath() + "/" + relative_sub_dir));
}
}
TEST_F(OdrFsUtilsTest, DISABLED_GetUsedSpace) {
static constexpr size_t kFirstFileBytes = 1;
static constexpr size_t kSecondFileBytes = 16111;
static constexpr size_t kBytesPerBlock = 512;
ScratchDir scratch_dir(/*keep_files=*/false);
const std::string first_file_path = scratch_dir.GetPath() + "/1.dat";
ASSERT_TRUE(CreateFile(first_file_path.c_str(), kFirstFileBytes));
struct stat sb;
ASSERT_EQ(0, stat(first_file_path.c_str(), &sb));
ASSERT_EQ(kFirstFileBytes, static_cast<decltype(kFirstFileBytes)>(sb.st_size));
uint64_t bytes_used = 0;
ASSERT_TRUE(GetUsedSpace(scratch_dir.GetPath().c_str(), &bytes_used));
const std::string second_file_path = scratch_dir.GetPath() + "/2.dat";
ASSERT_TRUE(CreateFile(second_file_path.c_str(), kSecondFileBytes));
ASSERT_TRUE(GetUsedSpace(scratch_dir.GetPath().c_str(), &bytes_used));
uint64_t expected_bytes_used = RoundUp(kFirstFileBytes, sb.st_blocks * kBytesPerBlock) +
RoundUp(kSecondFileBytes, sb.st_blocks * kBytesPerBlock);
ASSERT_EQ(expected_bytes_used, bytes_used);
const std::string sub_dir_path = scratch_dir.GetPath() + "/sub";
ASSERT_TRUE(EnsureDirectoryExists(sub_dir_path));
for (size_t i = 1; i < 32768; i *= 17) {
const std::string path = android::base::StringPrintf("%s/%zu", sub_dir_path.c_str(), i);
ASSERT_TRUE(CreateFile(path.c_str(), i));
expected_bytes_used += RoundUp(i, sb.st_blocks * kBytesPerBlock);
ASSERT_TRUE(GetUsedSpace(scratch_dir.GetPath().c_str(), &bytes_used));
ASSERT_EQ(expected_bytes_used, bytes_used);
}
}
TEST_F(OdrFsUtilsTest, GetUsedSpaceBadPath) {
ScratchDir scratch_dir(/*keep_files=*/false);
const std::string bad_path = scratch_dir.GetPath() + "/bad_path";
uint64_t bytes_used = ~0ull;
ASSERT_TRUE(GetUsedSpace(bad_path, &bytes_used));
ASSERT_EQ(0ull, bytes_used);
}
} // namespace odrefresh
} // namespace art