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Fill test disk partitions with random noise to expose more bugs.
[dcpomatic.git] / test / disk_writer_test.cc
diff --git a/test/disk_writer_test.cc b/test/disk_writer_test.cc
index 60d7fe22aeff1f576a7e0caf45323bb0bb923e7c..7b3778b671c7b9b9a930d18d3cf222df3e017147 100644 (file)
--- a/test/disk_writer_test.cc
+++ b/test/disk_writer_test.cc
@@ -40,18 +40,6 @@ using std::string;
 using std::vector;
 
 
 using std::vector;
 
 
-static
-void
-create_empty (boost::filesystem::path file, int size)
-{
-       auto fd = open (file.string().c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
-       BOOST_REQUIRE (fd != -1);
-       auto const r = posix_fallocate (fd, 0, size);
-       BOOST_REQUIRE_EQUAL (r, 0);
-       close (fd);
-}
-
-
 vector<string>
 ext2_ls (vector<string> arguments)
 {
 vector<string>
 ext2_ls (vector<string> arguments)
 {
@@ -91,8 +79,8 @@ BOOST_AUTO_TEST_CASE (disk_writer_test1)
        /* lwext4 has a lower limit of correct ext2 partition sizes it can make; 32Mb
         * does not work here: fsck gives errors about an incorrect free blocks count.
         */
        /* lwext4 has a lower limit of correct ext2 partition sizes it can make; 32Mb
         * does not work here: fsck gives errors about an incorrect free blocks count.
         */
-       create_empty (disk, 256 * 1024 * 1024);
-       create_empty (partition, 256 * 1024 * 1024);
+       make_random_file(disk, 256 * 1024 * 1024);
+       make_random_file(partition, 256 * 1024 * 1024);
 
        path dcp = "build/test/disk_writer_test1";
        create_directory (dcp);
 
        path dcp = "build/test/disk_writer_test1";
        create_directory (dcp);
@@ -138,3 +126,149 @@ BOOST_AUTO_TEST_CASE (disk_writer_test1)
        check_file ("build/test/disk_writer_test1/foo", "build/test/disk_writer_test1_foo_back");
 }
 
        check_file ("build/test/disk_writer_test1/foo", "build/test/disk_writer_test1_foo_back");
 }
 
+
+BOOST_AUTO_TEST_CASE (disk_writer_test2)
+{
+       using namespace boost::filesystem;
+       using namespace boost::process;
+
+       remove_all("build/test/disk_writer_test2.disk");
+       remove_all("build/test/disk_writer_test2.partition");
+       remove_all("build/test/disk_writer_test2");
+
+       Cleanup cl;
+
+       path const disk = "build/test/disk_writer_test2.disk";
+       path const partition = "build/test/disk_writer_test2.partition";
+
+       cl.add(disk);
+       cl.add(partition);
+
+       make_random_file(disk, 4LL * 1024LL * 1024LL * 1024LL);
+       make_random_file(partition, 4LL * 1024LL * 1024LL * 1024LL);
+
+       auto const dcp = TestPaths::private_data() / "xm";
+       dcpomatic::write(dcp, disk.string(), partition.string(), 0);
+
+       BOOST_CHECK_EQUAL(system("/sbin/e2fsck -fn build/test/disk_writer_test2.partition"), 0);
+
+       path const check = "build/test/disk_writer_test2";
+       create_directory(check);
+       cl.add(check);
+
+       for (auto original: directory_iterator(dcp)) {
+               auto path_in_copy = path("xm") / original.path().filename();
+               auto path_in_check = check / original.path().filename();
+               system("e2cp " + partition.string() + ":" + path_in_copy.string() + " " + path_in_check.string());
+               check_file(original.path(), path_in_check);
+       }
+
+       cl.run();
+}
+
+
+BOOST_AUTO_TEST_CASE (osx_drive_identification_test)
+{
+       vector<OSXDisk> disks;
+
+       auto disk = [&disks](string mount_point, string media_path, bool whole, std::vector<boost::filesystem::path> mount_points)
+       {
+               auto mp = analyse_osx_media_path (media_path);
+               if (mp) {
+                       disks.push_back({mount_point, {}, {}, *mp, whole, mount_points, 0});
+               }
+       };
+
+       auto find_unmounted = [](vector<OSXDisk> disks) {
+               auto drives = osx_disks_to_drives (disks);
+               vector<Drive> unmounted;
+               std::copy_if (drives.begin(), drives.end(), std::back_inserter(unmounted), [](Drive const& drive) { return !drive.mounted(); });
+               return unmounted;
+       };
+
+       disk("/dev/disk4s1", "IODeviceTree:/arm-io@10F00000/apcie@90000000/pci-bridge1@1/pcie-xhci@0/@7:1", false, {});
+       disk("/dev/disk4", "IODeviceTree:/arm-io@10F00000/apcie@90000000/pci-bridge1@1/pcie-xhci@0/@7:0", true, {});
+       disk("/dev/disk0", "IODeviceTree:/arm-io@10F00000/ans@77400000/iop-ans-nub/AppleANS3NVMeController/@1:0", true, {});
+       disk("/dev/disk0s1", "IODeviceTree:/arm-io@10F00000/ans@77400000/iop-ans-nub/AppleANS3NVMeController/@1:1", false, {});
+       disk("/dev/disk0s2", "IODeviceTree:/arm-io@10F00000/ans@77400000/iop-ans-nub/AppleANS3NVMeController/@1:2", false, {});
+       disk("/dev/disk0s3", "IODeviceTree:/arm-io@10F00000/ans@77400000/iop-ans-nub/AppleANS3NVMeController/@1:3", false, {});
+       disk("/dev/disk1", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/iBootSystemContainer@1/AppleAPFSContainerScheme/AppleAPFSMedia", true, {});
+       disk("/dev/disk2", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/RecoveryOSContainer@3/AppleAPFSContainerScheme/AppleAPFSMedia", true, {});
+       disk("/dev/disk3", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia", false, {});
+       disk("/dev/disk1s1", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/iBootSystemContainer@1/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/iSCPreboot@1", false, {});
+       disk("/dev/disk1s2", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/iBootSystemContainer@1/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/xART@2", false, {});
+       disk("/dev/disk1s3", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/iBootSystemContainer@1/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Hardware@3", false, {});
+       disk("/dev/disk1s4", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/iBootSystemContainer@1/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Recovery@4", false, {});
+       disk("/dev/disk2s1", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/RecoveryOSContainer@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Recovery@1", false, {});
+       disk("/dev/disk2s2", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/RecoveryOSContainer@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Update@2", false, {});
+       disk("/dev/disk3s1", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Macintosh HD@1", false, {});
+       disk("/dev/disk3s4", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Update@4", false, {"/System/Volumes/Update"});
+       disk("/dev/disk3s5", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Data@5", false, {"/System/Volumes/Data"});
+       disk("/dev/disk3s2", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Preboot@2", false, {"/System/Volumes/Preboot"});
+       disk("/dev/disk3s3", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Recovery@3", false, {});
+       disk("/dev/disk3s6", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/VM@6", false, {"/System/Volumes/VM"});
+       disk("/dev/disk3s1s1", "IOService:/AppleARMPE/arm-io@10F00000/AppleT810xIO/ans@77400000/AppleASCWrapV4/iop-ans-nub/RTBuddyV2/RTBuddyService/AppleANS3NVMeController/NS_01@1/IOBlockStorageDriver/APPLE SSD AP0512Q Media/IOGUIDPartitionScheme/Container@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Macintosh HD@1/com.apple.os.update-EA882DCA7A28EBA0A6E94689836BB10D77D84D1AEE2468E17775A447AA815278@1", false, {"/"});
+
+       vector<Drive> writeable = find_unmounted (disks);
+       BOOST_REQUIRE_EQUAL (writeable.size(), 1U);
+       BOOST_CHECK_EQUAL (writeable[0].device(), "/dev/disk4");
+
+       disks.clear ();
+       disk("/dev/disk4s1", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@0/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media/IOGUIDPartitionScheme/disk image@1", false, {});
+       disk("/dev/disk4", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@0/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media", true, {});
+       disk("/dev/disk3s1", "IODeviceTree:/PCI0@0/XHC1@14/@2:1", false, {});
+       disk("/dev/disk3", "IODeviceTree:/PCI0@0/XHC1@14/@2:0", true, {});
+       disk("/dev/disk0", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:0", true, {});
+       disk("/dev/disk0s1", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:1", false, {});
+       disk("/dev/disk0s2", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:2", false, {"/Volumes/Macintosh HD"});
+       disk("/dev/disk0s3", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:3", false, {});
+       disk("/dev/disk0s4", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:4", false, {});
+       disk("/dev/disk0s5", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:5", false, {"/Volumes/High Sierra"});
+       disk("/dev/disk0s6", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:6", false, {});
+       disk("/dev/disk0s7", "IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0/@0:7", false, {"/Volumes/Recovery HD"});
+       disk("/dev/disk1", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 3@3/AppleAPFSContainerScheme/AppleAPFSMedia", true, {});
+       disk("/dev/disk", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 4@4/AppleAPFSContainerScheme/AppleAPFSMedia", true, {});
+       disk("/dev/disk1s1", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 3@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Untitled - Data@1", false, {"/Volumes/Untitled - Data"});
+       disk("/dev/disk1s2", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 3@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Preboot@2", false, {});
+       disk("/dev/disk1s3", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 3@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Recovery@3", false, {});
+       disk("/dev/disk1s4", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 3@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/VM@4", false, {});
+       disk("/dev/disk1s5", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 3@3/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Untitled@5", false, {"/Volumes/Untitled"});
+       disk("/dev/disk2s1", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 4@4/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Catalina - Data@1", false, {});
+       disk("/dev/disk2s2", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 4@4/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Preboot@2", false, {});
+       disk("/dev/disk2s3", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 4@4/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Recovery@3", false, {});
+       disk("/dev/disk2s4", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 4@4/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/VM@4", false, {"/private/var/vm"});
+       disk("/dev/disk2s5", "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/APPLE HDD ST500LM012 Media/IOGUIDPartitionScheme/Untitled 4@4/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Catalina@5", false, {"/"});
+
+       writeable = find_unmounted (disks);
+       BOOST_REQUIRE_EQUAL (writeable.size(), 1U);
+       BOOST_CHECK_EQUAL (writeable[0].device(), "/dev/disk3");
+
+       disks.clear ();
+       disk("/dev/disk7", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@3/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media", true, {});
+       disk("/dev/disk7s1", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@3/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media/IOGUIDPartitionScheme/disk image@1", false, {});
+       disk("/dev/disk6s1", "MediaPathKey is IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@2/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media/IOGUIDPartitionScheme/disk image@1", false, {});
+       disk("/dev/disk6", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@2/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media", true, {});
+       disk("/dev/disk5s1", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@1/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media/IOGUIDPartitionScheme/disk image@1", false, {});
+       disk("/dev/disk5", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@1/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media", true, {});
+       disk("/dev/disk4s1", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@0/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media/IOGUIDPartitionScheme/disk image@1", false, {});
+       disk("/dev/disk4", "IOService:/IOResources/IOHDIXController/IOHDIXHDDriveOutKernel@0/IODiskImageBlockStorageDeviceOutKernel/IOBlockStorageDriver/Apple UDIF read-only compressed (zlib) Media", true, {});
+       disk("/dev/disk0", "IODeviceTree:/PCI0@1e0000/pci8086,2829@1F,2/PRT3@3/PMP@0/@0:0", true, {});
+       disk("/dev/disk2", "IODeviceTree:/PCI0@1e0000/pci8086,2829@1F,2/PRT1@1/PMP@0/@0:0", true, {});
+       disk("/dev/disk1", "IODeviceTree:/PCI0@1e0000/pci8086,2829@1F,2/PRT0@0/PMP@0/@0:0", true, {});
+       disk("/dev/disk1s1", "IODeviceTree:/PCI0@1e0000/pci8086,2829@1F,2/PRT0@0/PMP@0/@0:1", false, {"/Volumes/EFI"});
+       disk("/dev/disk2s1", "IODeviceTree:/PCI0@1e0000/pci8086,2829@1F,2/PRT1@1/PMP@0/@0:1", false, {});
+       disk("/dev/disk2s2", "IODeviceTree:/PCI0@1e0000/pci8086,2829@1F,2/PRT1@1/PMP@0/@0:2", false, {});
+       disk("/dev/disk3", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia", false, {});
+       disk("/dev/disk3s1", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/macOS - Data@1", false, {"/System/Volumes/Data"});
+       disk("/dev/disk3s2", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Preboot@2", false, {"/System/Volumes/Preboot"});
+       disk("/dev/disk3s3", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Recovery@3", false, {});
+       disk("/dev/disk3s4", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/VM@4", false, {"/System/Volumes/VM"});
+       disk("/dev/disk3s5", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/macOS@5", false, {});
+       disk("/dev/disk3s6", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/Update@6", false, {"/System/Volumes/Update"});
+       disk("/dev/disk3s5s1", "IOService:/AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/pci8086,2829@1F,2/AppleAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/VBOX HARDDISK Media/IOGUIDPartitionScheme/disk image@2/AppleAPFSContainerScheme/AppleAPFSMedia/AppleAPFSContainer/macOS@5/com.apple.os.update-5523D8E63431315F9F949CCDD0274BF797F5CEE4EAF616D4C66A01B8D6A83C7B@1", false, {"/"});
+
+       writeable = find_unmounted (disks);
+       BOOST_REQUIRE_EQUAL (writeable.size(), 1U);
+       BOOST_CHECK_EQUAL (writeable[0].device(), "/dev/disk0");
+}
+
2.0 development branch of dcpomatic