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Commit aeb196fb authored by Yi-yo Chiang's avatar Yi-yo Chiang Committed by Automerger Merge Worker
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Merge "TransformFstabForDsu: Insert synthesised entry at end of mount group"... 

Merge "TransformFstabForDsu: Insert synthesised entry at end of mount group" am: ae0f4d5e am: 0f7d5911

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1991619

Change-Id: Iaa02ee90fc81ad80aca545154afbcc788439f8c5
parents 1908ff3d 0f7d5911

fs_mgr/fs_mgr_fstab.cpp

+6 −1
Original line number Diff line number Diff line
@@ -657,7 +657,12 @@ void TransformFstabForDsu(Fstab* fstab, const std::string& dsu_slot, 
            if (partition_ext4 == fstab->end()) {

                auto new_entry = *GetEntryForMountPoint(fstab, mount_point);

                new_entry.fs_type = "ext4";

                fstab->emplace_back(new_entry);

                auto it = std::find_if(fstab->rbegin(), fstab->rend(),

                                       [&mount_point](const auto& entry) {

                                           return entry.mount_point == mount_point;

                                       });

                auto end_of_mount_point_group = fstab->begin() + std::distance(it, fstab->rend());

                fstab->insert(end_of_mount_point_group, new_entry);

            }

        }

    }

fs_mgr/tests/fs_mgr_test.cpp

+73 −0
Original line number Diff line number Diff line
@@ -1104,3 +1104,76 @@ source none6 swap defaults readahead_size_kb=0 
    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));

    EXPECT_EQ(0, entry->readahead_size_kb);

}



TEST(fs_mgr, TransformFstabForDsu) {

    TemporaryFile tf;

    ASSERT_TRUE(tf.fd != -1);

    std::string fstab_contents = R"fs(

system /system      erofs   ro  wait,logical,first_stage_mount

system /system      ext4    ro  wait,logical,first_stage_mount

vendor /vendor      ext4    ro  wait,logical,first_stage_mount

data   /data        f2fs    noatime     wait

)fs";



    ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));



    Fstab fstab;

    EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));

    TransformFstabForDsu(&fstab, "dsu", {"system_gsi", "userdata_gsi"});

    ASSERT_EQ(4U, fstab.size());



    auto entry = fstab.begin();



    EXPECT_EQ("/system", entry->mount_point);

    EXPECT_EQ("system_gsi", entry->blk_device);

    entry++;



    EXPECT_EQ("/system", entry->mount_point);

    EXPECT_EQ("system_gsi", entry->blk_device);

    entry++;



    EXPECT_EQ("/vendor", entry->mount_point);

    EXPECT_EQ("vendor", entry->blk_device);

    entry++;



    EXPECT_EQ("/data", entry->mount_point);

    EXPECT_EQ("userdata_gsi", entry->blk_device);

    entry++;

}



TEST(fs_mgr, TransformFstabForDsu_synthesisExt4Entry) {

    TemporaryFile tf;

    ASSERT_TRUE(tf.fd != -1);

    std::string fstab_contents = R"fs(

system /system      erofs   ro  wait,logical,first_stage_mount

vendor /vendor      ext4    ro  wait,logical,first_stage_mount

data   /data        f2fs    noatime     wait

)fs";



    ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));



    Fstab fstab;

    EXPECT_TRUE(ReadFstabFromFile(tf.path, &fstab));

    TransformFstabForDsu(&fstab, "dsu", {"system_gsi", "userdata_gsi"});

    ASSERT_EQ(4U, fstab.size());



    auto entry = fstab.begin();



    EXPECT_EQ("/system", entry->mount_point);

    EXPECT_EQ("system_gsi", entry->blk_device);

    EXPECT_EQ("erofs", entry->fs_type);

    entry++;



    EXPECT_EQ("/system", entry->mount_point);

    EXPECT_EQ("system_gsi", entry->blk_device);

    EXPECT_EQ("ext4", entry->fs_type);

    entry++;



    EXPECT_EQ("/vendor", entry->mount_point);

    EXPECT_EQ("vendor", entry->blk_device);

    entry++;



    EXPECT_EQ("/data", entry->mount_point);

    EXPECT_EQ("userdata_gsi", entry->blk_device);

    entry++;

}