Merge "fs_mgr: Add VTS tests for EROFS."

    test_suites: ["general-tests"],

}

cc_test {

    name: "vts_fs_test",

    test_suites: [

        "vts",

        "device-tests",

    ],

    test_options: {

        min_shipping_api_level: 33,

    },

    require_root: true,

    auto_gen_config: true,

    cflags: [

        "-Wall",

        "-Werror",

    ],

    srcs: [

        "vts_fs_test.cpp",

    ],

    shared_libs: [

        "libbase",

        "libfs_mgr",

    ],

    static_libs: [

        "libfstab",

        "libgmock",

        "libgtest",

    ],

}

// 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>

static int GetVsrLevel() {

    return android::base::GetIntProperty("ro.vendor.api_level", -1);

}

TEST(fs, ErofsSupported) {

    // S and higher for this test.

    if (GetVsrLevel() < 31) {

        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"));

}

TEST(fs, PartitionTypes) {

    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));

    int vsr_level = GetVsrLevel();

    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 (vsr_level <= 32) {

            continue;

        }

        if (vsr_level == 33 && parent_bdev != super_bdev) {

            // Only check for dynamic partitions at this VSR level.

            continue;

        }

        if (entry.flags & MS_RDONLY) {

            EXPECT_EQ(entry.fs_type, "erofs") << entry.mount_point;

        } else {

            EXPECT_NE(entry.fs_type, "ext4") << entry.mount_point;

        }

    }

}