Merge "fs_mgr: Add VTS tests for EROFS." am: 4b7400756c am: bac4fb5a31

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1964587

Change-Id: Id2e3ab282b7a3039447f376045869a7c8204c0c6

fs_mgr/tests/Android.bp

@@ -88,3 +88,32 @@ java_test_host {
 
     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",
+    ],
+}

fs_mgr/tests/vts_fs_test.cpp

@@ -0,0 +1,102 @@
+// 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;
+        }
+    }
+}