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/*
* Copyright (C) 2024 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <android-base/file.h>
#include <android-base/unique_fd.h>
#include "linker_phdr.h"
#include <gtest/gtest.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string>
using ::android::base::GetExecutableDirectory;
using ::android::base::unique_fd;
namespace {
static std::string GetTestElfPath(const std::string& filename) {
static std::string test_data_dir = GetExecutableDirectory();
return test_data_dir + "/" + filename;
}
bool GetPadSegment(const std::string& elf_path) {
std::string path = GetTestElfPath(elf_path);
unique_fd fd{TEMP_FAILURE_RETRY(open(path.c_str(), O_CLOEXEC | O_RDWR))};
EXPECT_GE(fd.get(), 0) << "Failed to open " << path << ": " << strerror(errno);
struct stat file_stat;
EXPECT_NE(TEMP_FAILURE_RETRY(fstat(fd.get(), &file_stat)), -1)
<< "Failed to stat " << path << ": " << strerror(errno);
ElfReader elf_reader;
EXPECT_TRUE(elf_reader.Read(path.c_str(), fd.get(), 0, file_stat.st_size))
<< "Failed to read ELF file";
return elf_reader.should_pad_segments();
}
}; // anonymous namespace
TEST(crt_pad_segment, note_absent) {
if (!page_size_migration_supported()) {
GTEST_SKIP() << "Kernel does not support page size migration";
}
ASSERT_FALSE(GetPadSegment("no_crt_pad_segment.so"));
}
TEST(crt_pad_segment, note_present_and_enabled) {
if (!page_size_migration_supported()) {
GTEST_SKIP() << "Kernel does not support page size migration";
}
ASSERT_TRUE(GetPadSegment("crt_pad_segment_enabled.so"));
}
TEST(crt_pad_segment, note_present_and_disabled) {
if (!page_size_migration_supported()) {
GTEST_SKIP() << "Kernel does not support page size migration";
}
ASSERT_FALSE(GetPadSegment("crt_pad_segment_disabled.so"));
}
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