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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 <sys/mount.h>
#include <sys/utsname.h>
#include <android-base/file.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <fstab/fstab.h>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <libdm/dm.h>
using testing::Contains;
using testing::Not;
static int GetVsrLevel() {
return android::base::GetIntProperty("ro.vendor.api_level", -1);
}
TEST(fs, ErofsSupported) {
// T-launch GKI kernels and higher must support EROFS.
if (GetVsrLevel() < __ANDROID_API_T__) {
GTEST_SKIP();
}
struct utsname uts;
ASSERT_EQ(uname(&uts), 0);
unsigned int major, minor;
ASSERT_EQ(sscanf(uts.release, "%u.%u", &major, &minor), 2);
// EROFS support only required in 5.10+
if (major < 5 || (major == 5 && minor < 10)) {
GTEST_SKIP();
}
std::string fs;
ASSERT_TRUE(android::base::ReadFileToString("/proc/filesystems", &fs));
EXPECT_THAT(fs, ::testing::HasSubstr("\terofs\n"));
ASSERT_EQ(access("/sys/fs/erofs", F_OK), 0);
}
TEST(fs, PartitionTypes) {
// Requirements only apply to Android 13+, 5.10+ devices.
int vsr_level = GetVsrLevel();
if (vsr_level < __ANDROID_API_T__) {
GTEST_SKIP();
}
struct utsname uts;
ASSERT_EQ(uname(&uts), 0);
unsigned int major, minor;
ASSERT_EQ(sscanf(uts.release, "%u.%u", &major, &minor), 2);
if (major < 5 || (major == 5 && minor < 10)) {
GTEST_SKIP();
}
android::fs_mgr::Fstab fstab;
ASSERT_TRUE(android::fs_mgr::ReadFstabFromFile("/proc/mounts", &fstab));
auto& dm = android::dm::DeviceMapper::Instance();
std::string super_bdev, userdata_bdev;
ASSERT_TRUE(android::base::Readlink("/dev/block/by-name/super", &super_bdev));
ASSERT_TRUE(android::base::Readlink("/dev/block/by-name/userdata", &userdata_bdev));
std::vector<std::string> must_be_f2fs = {"/data"};
if (vsr_level >= __ANDROID_API_U__) {
must_be_f2fs.emplace_back("/metadata");
}
for (const auto& entry : fstab) {
std::string parent_bdev = entry.blk_device;
while (true) {
auto basename = android::base::Basename(parent_bdev);
if (!android::base::StartsWith(basename, "dm-")) {
break;
}
auto parent = dm.GetParentBlockDeviceByPath(parent_bdev);
if (!parent || *parent == parent_bdev) {
break;
}
parent_bdev = *parent;
}
if (parent_bdev == userdata_bdev ||
android::base::StartsWith(parent_bdev, "/dev/block/loop")) {
if (entry.flags & MS_RDONLY) {
// APEXes should not be F2FS.
EXPECT_NE(entry.fs_type, "f2fs");
}
continue;
}
if (entry.flags & MS_RDONLY) {
if (parent_bdev != super_bdev) {
// Ignore non-AOSP partitions (eg anything outside of super).
continue;
}
std::vector<std::string> allowed = {"erofs", "ext4", "f2fs"};
EXPECT_NE(std::find(allowed.begin(), allowed.end(), entry.fs_type), allowed.end())
<< entry.mount_point;
} else {
if (std::find(must_be_f2fs.begin(), must_be_f2fs.end(), entry.mount_point) !=
must_be_f2fs.end()) {
EXPECT_EQ(entry.fs_type, "f2fs") << entry.mount_point;
}
}
}
}
TEST(fs, NoDtFstab) {
if (GetVsrLevel() < __ANDROID_API_Q__) {
GTEST_SKIP();
}
android::fs_mgr::Fstab fstab;
EXPECT_FALSE(android::fs_mgr::ReadFstabFromDt(&fstab, false));
}
TEST(fs, NoLegacyVerifiedBoot) {
if (GetVsrLevel() < __ANDROID_API_T__) {
GTEST_SKIP();
}
const auto& default_fstab_path = android::fs_mgr::GetFstabPath();
EXPECT_FALSE(default_fstab_path.empty());
std::string fstab_str;
EXPECT_TRUE(android::base::ReadFileToString(default_fstab_path, &fstab_str,
/* follow_symlinks = */ true));
for (const auto& line : android::base::Split(fstab_str, "\n")) {
auto fields = android::base::Tokenize(line, " \t");
// Ignores empty lines and comments.
if (fields.empty() || android::base::StartsWith(fields.front(), '#')) {
continue;
}
// Each line in a fstab should have at least five entries.
// <src> <mnt_point> <type> <mnt_flags and options> <fs_mgr_flags>
ASSERT_GE(fields.size(), 5);
EXPECT_THAT(android::base::Split(fields[4], ","), Not(Contains("verify")))
<< "AVB 1.0 isn't supported now, but the 'verify' flag is found:\n"
<< " " << line;
}
}
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