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      1 #include "host/commands/launch/flags.h"
      2 
      3 #include <iostream>
      4 
      5 #include <gflags/gflags.h>
      6 #include <glog/logging.h>
      7 
      8 #include "common/libs/strings/str_split.h"
      9 #include "common/libs/utils/environment.h"
     10 #include "common/libs/utils/files.h"
     11 #include "common/vsoc/lib/vsoc_memory.h"
     12 #include "host/commands/launch/boot_image_unpacker.h"
     13 #include "host/commands/launch/data_image.h"
     14 #include "host/commands/launch/launch.h"
     15 #include "host/commands/launch/launcher_defs.h"
     16 #include "host/commands/launch/ril_config.h"
     17 #include "host/libs/vm_manager/crosvm_manager.h"
     18 #include "host/libs/vm_manager/qemu_manager.h"
     19 #include "host/libs/vm_manager/vm_manager.h"
     20 
     21 using vsoc::GetPerInstanceDefault;
     22 using cvd::LauncherExitCodes;
     23 
     24 DEFINE_string(
     25     system_image, "",
     26     "Path to the system image, if empty it is assumed to be a file named "
     27     "system.img in the directory specified by -system_image_dir");
     28 DEFINE_string(cache_image, "", "Location of the cache partition image.");
     29 DEFINE_string(metadata_image, "", "Location of the metadata partition image "
     30               "to be generated.");
     31 DEFINE_int32(blank_metadata_image_mb, 16,
     32              "The size of the blank metadata image to generate, MB.");
     33 DEFINE_int32(cpus, 2, "Virtual CPU count.");
     34 DEFINE_string(data_image, "", "Location of the data partition image.");
     35 DEFINE_string(data_policy, "use_existing", "How to handle userdata partition."
     36             " Either 'use_existing', 'create_if_missing', 'resize_up_to', or "
     37             "'always_create'.");
     38 DEFINE_int32(blank_data_image_mb, 0,
     39              "The size of the blank data image to generate, MB.");
     40 DEFINE_string(blank_data_image_fmt, "ext4",
     41               "The fs format for the blank data image. Used with mkfs.");
     42 DEFINE_string(qemu_gdb, "",
     43               "Debug flag to pass to qemu. e.g. -qemu_gdb=tcp::1234");
     44 
     45 DEFINE_int32(x_res, 720, "Width of the screen in pixels");
     46 DEFINE_int32(y_res, 1280, "Height of the screen in pixels");
     47 DEFINE_int32(dpi, 160, "Pixels per inch for the screen");
     48 DEFINE_int32(refresh_rate_hz, 60, "Screen refresh rate in Hertz");
     49 DEFINE_int32(num_screen_buffers, 3, "The number of screen buffers");
     50 DEFINE_string(kernel_path, "",
     51               "Path to the kernel. Overrides the one from the boot image");
     52 DEFINE_bool(decompress_kernel, false,
     53             "Whether to decompress the kernel image. Required for crosvm.");
     54 DEFINE_string(kernel_decompresser_executable,
     55               vsoc::DefaultHostArtifactsPath("bin/extract-vmlinux"),
     56              "Path to the extract-vmlinux executable.");
     57 DEFINE_string(extra_kernel_cmdline, "",
     58               "Additional flags to put on the kernel command line");
     59 DEFINE_int32(loop_max_part, 7, "Maximum number of loop partitions");
     60 DEFINE_string(console, "ttyS0", "Console device for the guest kernel.");
     61 DEFINE_string(androidboot_console, "ttyS1",
     62               "Console device for the Android framework");
     63 DEFINE_string(
     64     hardware_name, "",
     65     "The codename of the device's hardware, one of {cutf_ivsh, cutf_cvm}");
     66 DEFINE_string(guest_security, "selinux",
     67               "The security module to use in the guest");
     68 DEFINE_bool(guest_enforce_security, true,
     69             "Whether to run in enforcing mode (non permissive). Ignored if "
     70             "-guest_security is empty.");
     71 DEFINE_bool(guest_audit_security, true,
     72             "Whether to log security audits.");
     73 DEFINE_string(boot_image, "", "Location of cuttlefish boot image.");
     74 DEFINE_int32(memory_mb, 2048,
     75              "Total amount of memory available for guest, MB.");
     76 std::string g_default_mempath{vsoc::GetDefaultMempath()};
     77 DEFINE_string(mempath, g_default_mempath.c_str(),
     78               "Target location for the shmem file.");
     79 DEFINE_string(mobile_interface, "", // default handled on ParseCommandLine
     80               "Network interface to use for mobile networking");
     81 DEFINE_string(mobile_tap_name, "", // default handled on ParseCommandLine
     82               "The name of the tap interface to use for mobile");
     83 std::string g_default_serial_number{GetPerInstanceDefault("CUTTLEFISHCVD")};
     84 DEFINE_string(serial_number, g_default_serial_number.c_str(),
     85               "Serial number to use for the device");
     86 DEFINE_string(instance_dir, "", // default handled on ParseCommandLine
     87               "A directory to put all instance specific files");
     88 DEFINE_string(
     89     vm_manager, vm_manager::CrosvmManager::name(),
     90     "What virtual machine manager to use, one of {qemu_cli, crosvm}");
     91 DEFINE_string(system_image_dir, vsoc::DefaultGuestImagePath(""),
     92               "Location of the system partition images.");
     93 DEFINE_string(vendor_image, "", "Location of the vendor partition image.");
     94 DEFINE_string(product_image, "", "Location of the product partition image.");
     95 DEFINE_string(super_image, "", "Location of the super partition image.");
     96 
     97 DEFINE_bool(deprecated_boot_completed, false, "Log boot completed message to"
     98             " host kernel. This is only used during transition of our clients."
     99             " Will be deprecated soon.");
    100 DEFINE_bool(start_vnc_server, true, "Whether to start the vnc server process.");
    101 DEFINE_string(vnc_server_binary,
    102               vsoc::DefaultHostArtifactsPath("bin/vnc_server"),
    103               "Location of the vnc server binary.");
    104 DEFINE_bool(start_stream_audio, false,
    105             "Whether to start the stream audio process.");
    106 DEFINE_string(stream_audio_binary,
    107               vsoc::DefaultHostArtifactsPath("bin/stream_audio"),
    108               "Location of the stream_audio binary.");
    109 DEFINE_string(virtual_usb_manager_binary,
    110               vsoc::DefaultHostArtifactsPath("bin/virtual_usb_manager"),
    111               "Location of the virtual usb manager binary.");
    112 DEFINE_string(kernel_log_monitor_binary,
    113               vsoc::DefaultHostArtifactsPath("bin/kernel_log_monitor"),
    114               "Location of the log monitor binary.");
    115 DEFINE_string(ivserver_binary,
    116               vsoc::DefaultHostArtifactsPath("bin/ivserver"),
    117               "Location of the ivshmem server binary.");
    118 DEFINE_int32(vnc_server_port, GetPerInstanceDefault(6444),
    119              "The port on which the vnc server should listen");
    120 DEFINE_int32(stream_audio_port, GetPerInstanceDefault(7444),
    121              "The port on which stream_audio should listen.");
    122 DEFINE_string(socket_forward_proxy_binary,
    123               vsoc::DefaultHostArtifactsPath("bin/socket_forward_proxy"),
    124               "Location of the socket_forward_proxy binary.");
    125 DEFINE_string(socket_vsock_proxy_binary,
    126               vsoc::DefaultHostArtifactsPath("bin/socket_vsock_proxy"),
    127               "Location of the socket_vsock_proxy binary.");
    128 DEFINE_string(adb_mode, "vsock_half_tunnel",
    129               "Mode for ADB connection. Can be 'usb' for USB forwarding, "
    130               "'tunnel' for a TCP connection tunneled through VSoC, "
    131               "'vsock_tunnel' for a TCP connection tunneled through vsock, "
    132               "'native_vsock' for a  direct connection to the guest ADB over "
    133               "vsock, 'vsock_half_tunnel' for a TCP connection forwarded to "
    134               "the guest ADB server, or a comma separated list of types as in "
    135               "'usb,tunnel'");
    136 DEFINE_bool(run_adb_connector, true,
    137             "Maintain adb connection by sending 'adb connect' commands to the "
    138             "server. Only relevant with -adb_mode=tunnel or vsock_tunnel");
    139 DEFINE_string(adb_connector_binary,
    140               vsoc::DefaultHostArtifactsPath("bin/adb_connector"),
    141               "Location of the adb_connector binary. Only relevant if "
    142               "-run_adb_connector is true");
    143 DEFINE_int32(vhci_port, GetPerInstanceDefault(0), "VHCI port to use for usb");
    144 DEFINE_string(guest_mac_address,
    145               GetPerInstanceDefault("00:43:56:44:80:"), // 00:43:56:44:80:0x
    146               "MAC address of the wifi interface to be created on the guest.");
    147 DEFINE_string(host_mac_address,
    148               "42:00:00:00:00:00",
    149               "MAC address of the wifi interface running on the host.");
    150 DEFINE_string(wifi_tap_name, "", // default handled on ParseCommandLine
    151               "The name of the tap interface to use for wifi");
    152 DEFINE_int32(vsock_guest_cid,
    153              vsoc::GetDefaultPerInstanceVsockCid(),
    154              "Guest identifier for vsock. Disabled if under 3.");
    155 
    156 // TODO(b/72969289) This should be generated
    157 DEFINE_string(dtb, "", "Path to the cuttlefish.dtb file");
    158 DEFINE_string(gsi_fstab,
    159               vsoc::DefaultHostArtifactsPath("config/gsi.fstab"),
    160               "Path to the GSI fstab file");
    161 
    162 DEFINE_string(uuid, vsoc::GetPerInstanceDefault(vsoc::kDefaultUuidPrefix),
    163               "UUID to use for the device. Random if not specified");
    164 DEFINE_bool(daemon, false,
    165             "Run cuttlefish in background, the launcher exits on boot "
    166             "completed/failed");
    167 
    168 DEFINE_string(device_title, "", "Human readable name for the instance, "
    169               "used by the vnc_server for its server title");
    170 DEFINE_string(setupwizard_mode, "DISABLED",
    171             "One of DISABLED,OPTIONAL,REQUIRED");
    172 
    173 DEFINE_string(qemu_binary,
    174               "/usr/bin/qemu-system-x86_64",
    175               "The qemu binary to use");
    176 DEFINE_string(crosvm_binary,
    177               vsoc::DefaultHostArtifactsPath("bin/crosvm"),
    178               "The Crosvm binary to use");
    179 DEFINE_bool(restart_subprocesses, true, "Restart any crashed host process");
    180 DEFINE_bool(run_e2e_test, true, "Run e2e test after device launches");
    181 DEFINE_string(e2e_test_binary,
    182               vsoc::DefaultHostArtifactsPath("bin/host_region_e2e_test"),
    183               "Location of the region end to end test binary");
    184 DEFINE_string(logcat_receiver_binary,
    185               vsoc::DefaultHostArtifactsPath("bin/logcat_receiver"),
    186               "Binary for the logcat server");
    187 DEFINE_string(logcat_mode, "", "How to send android's log messages from "
    188                                "guest to host. One of [serial, vsock]");
    189 DEFINE_int32(logcat_vsock_port, vsoc::GetPerInstanceDefault(5620),
    190              "The port for logcat over vsock");
    191 DEFINE_int32(frames_vsock_port, vsoc::GetPerInstanceDefault(5580),
    192              "The vsock port to receive frames from the guest on");
    193 namespace {
    194 
    195 template<typename S, typename T>
    196 static std::string concat(const S& s, const T& t) {
    197   std::ostringstream os;
    198   os << s << t;
    199   return os.str();
    200 }
    201 
    202 bool ResolveInstanceFiles() {
    203   if (FLAGS_system_image_dir.empty()) {
    204     LOG(ERROR) << "--system_image_dir must be specified.";
    205     return false;
    206   }
    207 
    208   // If user did not specify location of either of these files, expect them to
    209   // be placed in --system_image_dir location.
    210   std::string default_system_image = FLAGS_system_image_dir + "/system.img";
    211   SetCommandLineOptionWithMode("system_image", default_system_image.c_str(),
    212                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    213   std::string default_boot_image = FLAGS_system_image_dir + "/boot.img";
    214   SetCommandLineOptionWithMode("boot_image", default_boot_image.c_str(),
    215                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    216   std::string default_cache_image = FLAGS_system_image_dir + "/cache.img";
    217   SetCommandLineOptionWithMode("cache_image", default_cache_image.c_str(),
    218                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    219   std::string default_data_image = FLAGS_system_image_dir + "/userdata.img";
    220   SetCommandLineOptionWithMode("data_image", default_data_image.c_str(),
    221                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    222   std::string default_vendor_image = FLAGS_system_image_dir + "/vendor.img";
    223   SetCommandLineOptionWithMode("vendor_image", default_vendor_image.c_str(),
    224                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    225   std::string default_metadata_image = FLAGS_system_image_dir + "/metadata.img";
    226   SetCommandLineOptionWithMode("metadata_image", default_metadata_image.c_str(),
    227                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    228   std::string default_product_image = FLAGS_system_image_dir + "/product.img";
    229   SetCommandLineOptionWithMode("product_image", default_product_image.c_str(),
    230                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    231   std::string default_super_image = FLAGS_system_image_dir + "/super.img";
    232   SetCommandLineOptionWithMode("super_image", default_super_image.c_str(),
    233                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    234 
    235   return true;
    236 }
    237 
    238 std::string GetCuttlefishEnvPath() {
    239   return cvd::StringFromEnv("HOME", ".") + "/.cuttlefish.sh";
    240 }
    241 
    242 // Initializes the config object and saves it to file. It doesn't return it, all
    243 // further uses of the config should happen through the singleton
    244 bool InitializeCuttlefishConfiguration(
    245     const cvd::BootImageUnpacker& boot_image_unpacker) {
    246   vsoc::CuttlefishConfig tmp_config_obj;
    247   auto& memory_layout = *vsoc::VSoCMemoryLayout::Get();
    248   // Set this first so that calls to PerInstancePath below are correct
    249   tmp_config_obj.set_instance_dir(FLAGS_instance_dir);
    250   if (!vm_manager::VmManager::IsValidName(FLAGS_vm_manager)) {
    251     LOG(ERROR) << "Invalid vm_manager: " << FLAGS_vm_manager;
    252     return false;
    253   }
    254   tmp_config_obj.set_vm_manager(FLAGS_vm_manager);
    255 
    256   // TODO(b/77276633): This should be handled as part of the GPU configuration
    257   tmp_config_obj.add_kernel_cmdline("androidboot.hardware.egl=swiftshader");
    258 
    259   vm_manager::VmManager::ConfigureBootDevices(&tmp_config_obj);
    260 
    261   tmp_config_obj.set_serial_number(FLAGS_serial_number);
    262 
    263   tmp_config_obj.set_cpus(FLAGS_cpus);
    264   tmp_config_obj.set_memory_mb(FLAGS_memory_mb);
    265 
    266   tmp_config_obj.set_dpi(FLAGS_dpi);
    267   tmp_config_obj.set_setupwizard_mode(FLAGS_setupwizard_mode);
    268   tmp_config_obj.set_x_res(FLAGS_x_res);
    269   tmp_config_obj.set_y_res(FLAGS_y_res);
    270   tmp_config_obj.set_num_screen_buffers(FLAGS_num_screen_buffers);
    271   tmp_config_obj.set_refresh_rate_hz(FLAGS_refresh_rate_hz);
    272   tmp_config_obj.set_gdb_flag(FLAGS_qemu_gdb);
    273   std::vector<std::string> adb = cvd::StrSplit(FLAGS_adb_mode, ',');
    274   tmp_config_obj.set_adb_mode(std::set<std::string>(adb.begin(), adb.end()));
    275   tmp_config_obj.set_adb_ip_and_port("127.0.0.1:" + std::to_string(GetHostPort()));
    276 
    277   tmp_config_obj.set_device_title(FLAGS_device_title);
    278   if (FLAGS_kernel_path.size()) {
    279     tmp_config_obj.set_kernel_image_path(FLAGS_kernel_path);
    280     tmp_config_obj.set_use_unpacked_kernel(false);
    281   } else {
    282     tmp_config_obj.set_kernel_image_path(
    283         tmp_config_obj.PerInstancePath("kernel"));
    284     tmp_config_obj.set_use_unpacked_kernel(true);
    285   }
    286   tmp_config_obj.set_decompress_kernel(FLAGS_decompress_kernel);
    287   if (FLAGS_decompress_kernel) {
    288     tmp_config_obj.set_decompressed_kernel_image_path(
    289         tmp_config_obj.PerInstancePath("vmlinux"));
    290   }
    291 
    292   auto ramdisk_path = tmp_config_obj.PerInstancePath("ramdisk.img");
    293   bool use_ramdisk = boot_image_unpacker.HasRamdiskImage();
    294   if (!use_ramdisk) {
    295     LOG(INFO) << "No ramdisk present; assuming system-as-root build";
    296     ramdisk_path = "";
    297   }
    298 
    299   // Fallback for older builds, or builds from branches without DAP
    300   if (!FLAGS_super_image.empty() && !cvd::FileHasContent(FLAGS_super_image.c_str())) {
    301     LOG(INFO) << "No super image detected; assuming non-DAP build";
    302     FLAGS_super_image.clear();
    303   }
    304 
    305   // This needs to be done here because the dtb path depends on the presence of
    306   // the ramdisk. If we are booting a super image, the fstab is passed through
    307   // from the ramdisk, it should never be defined by dt.
    308   if (FLAGS_super_image.empty() && FLAGS_dtb.empty()) {
    309     if (use_ramdisk) {
    310       FLAGS_dtb = vsoc::DefaultHostArtifactsPath("config/initrd-root.dtb");
    311     } else {
    312       FLAGS_dtb = vsoc::DefaultHostArtifactsPath("config/system-root.dtb");
    313     }
    314   }
    315 
    316   tmp_config_obj.add_kernel_cmdline(boot_image_unpacker.kernel_cmdline());
    317   if (!use_ramdisk) {
    318     tmp_config_obj.add_kernel_cmdline("root=/dev/vda");
    319   }
    320   if (!FLAGS_super_image.empty()) {
    321     tmp_config_obj.add_kernel_cmdline("androidboot.super_partition=vda");
    322   }
    323   tmp_config_obj.add_kernel_cmdline("init=/init");
    324   tmp_config_obj.add_kernel_cmdline(
    325       concat("androidboot.serialno=", FLAGS_serial_number));
    326   tmp_config_obj.add_kernel_cmdline("mac80211_hwsim.radios=0");
    327   tmp_config_obj.add_kernel_cmdline(concat("androidboot.lcd_density=", FLAGS_dpi));
    328   tmp_config_obj.add_kernel_cmdline(
    329       concat("androidboot.setupwizard_mode=", FLAGS_setupwizard_mode));
    330   tmp_config_obj.add_kernel_cmdline(concat("loop.max_part=", FLAGS_loop_max_part));
    331   if (!FLAGS_console.empty()) {
    332     tmp_config_obj.add_kernel_cmdline(concat("console=", FLAGS_console));
    333   }
    334   if (!FLAGS_androidboot_console.empty()) {
    335     tmp_config_obj.add_kernel_cmdline(
    336         concat("androidboot.console=", FLAGS_androidboot_console));
    337   }
    338   if (!FLAGS_hardware_name.empty()) {
    339     tmp_config_obj.add_kernel_cmdline(
    340         concat("androidboot.hardware=", FLAGS_hardware_name));
    341   }
    342   if (FLAGS_logcat_mode == cvd::kLogcatVsockMode) {
    343     tmp_config_obj.add_kernel_cmdline(concat("androidboot.vsock_logcat_port=",
    344                                              FLAGS_logcat_vsock_port));
    345   }
    346   tmp_config_obj.set_hardware_name(FLAGS_hardware_name);
    347   if (!FLAGS_guest_security.empty()) {
    348     tmp_config_obj.add_kernel_cmdline(concat("security=", FLAGS_guest_security));
    349     if (FLAGS_guest_enforce_security) {
    350       tmp_config_obj.add_kernel_cmdline("enforcing=1");
    351     } else {
    352       tmp_config_obj.add_kernel_cmdline("enforcing=0");
    353       tmp_config_obj.add_kernel_cmdline("androidboot.selinux=permissive");
    354     }
    355     if (FLAGS_guest_audit_security) {
    356       tmp_config_obj.add_kernel_cmdline("audit=1");
    357     } else {
    358       tmp_config_obj.add_kernel_cmdline("audit=0");
    359     }
    360   }
    361   if (FLAGS_run_e2e_test) {
    362     tmp_config_obj.add_kernel_cmdline("androidboot.vsoc_e2e_test=1");
    363   }
    364   if (FLAGS_extra_kernel_cmdline.size()) {
    365     tmp_config_obj.add_kernel_cmdline(FLAGS_extra_kernel_cmdline);
    366   }
    367 
    368   if (FLAGS_super_image.empty()) {
    369     tmp_config_obj.set_system_image_path(FLAGS_system_image);
    370     tmp_config_obj.set_vendor_image_path(FLAGS_vendor_image);
    371     tmp_config_obj.set_product_image_path(FLAGS_product_image);
    372     tmp_config_obj.set_super_image_path("");
    373     tmp_config_obj.set_dtb_path(FLAGS_dtb);
    374     tmp_config_obj.set_gsi_fstab_path(FLAGS_gsi_fstab);
    375   } else {
    376     tmp_config_obj.set_system_image_path("");
    377     tmp_config_obj.set_vendor_image_path("");
    378     tmp_config_obj.set_product_image_path("");
    379     tmp_config_obj.set_super_image_path(FLAGS_super_image);
    380     tmp_config_obj.set_dtb_path("");
    381     tmp_config_obj.set_gsi_fstab_path("");
    382   }
    383 
    384   tmp_config_obj.set_ramdisk_image_path(ramdisk_path);
    385   tmp_config_obj.set_cache_image_path(FLAGS_cache_image);
    386   tmp_config_obj.set_data_image_path(FLAGS_data_image);
    387   tmp_config_obj.set_metadata_image_path(FLAGS_metadata_image);
    388 
    389   tmp_config_obj.set_mempath(FLAGS_mempath);
    390   tmp_config_obj.set_ivshmem_qemu_socket_path(
    391       tmp_config_obj.PerInstancePath("ivshmem_socket_qemu"));
    392   tmp_config_obj.set_ivshmem_client_socket_path(
    393       tmp_config_obj.PerInstancePath("ivshmem_socket_client"));
    394   tmp_config_obj.set_ivshmem_vector_count(memory_layout.GetRegions().size());
    395 
    396   if (AdbUsbEnabled(tmp_config_obj)) {
    397     tmp_config_obj.set_usb_v1_socket_name(tmp_config_obj.PerInstancePath("usb-v1"));
    398     tmp_config_obj.set_vhci_port(FLAGS_vhci_port);
    399     tmp_config_obj.set_usb_ip_socket_name(tmp_config_obj.PerInstancePath("usb-ip"));
    400   }
    401 
    402   tmp_config_obj.set_kernel_log_socket_name(tmp_config_obj.PerInstancePath("kernel-log"));
    403   tmp_config_obj.set_deprecated_boot_completed(FLAGS_deprecated_boot_completed);
    404   tmp_config_obj.set_console_path(tmp_config_obj.PerInstancePath("console"));
    405   tmp_config_obj.set_logcat_path(tmp_config_obj.PerInstancePath("logcat"));
    406   tmp_config_obj.set_logcat_receiver_binary(FLAGS_logcat_receiver_binary);
    407   tmp_config_obj.set_launcher_log_path(tmp_config_obj.PerInstancePath("launcher.log"));
    408   tmp_config_obj.set_launcher_monitor_socket_path(
    409       tmp_config_obj.PerInstancePath("launcher_monitor.sock"));
    410 
    411   tmp_config_obj.set_mobile_bridge_name(FLAGS_mobile_interface);
    412   tmp_config_obj.set_mobile_tap_name(FLAGS_mobile_tap_name);
    413   ConfigureRil(&tmp_config_obj);
    414 
    415   tmp_config_obj.set_wifi_tap_name(FLAGS_wifi_tap_name);
    416 
    417   tmp_config_obj.set_wifi_guest_mac_addr(FLAGS_guest_mac_address);
    418   tmp_config_obj.set_wifi_host_mac_addr(FLAGS_host_mac_address);
    419 
    420   tmp_config_obj.set_vsock_guest_cid(FLAGS_vsock_guest_cid);
    421 
    422   tmp_config_obj.set_entropy_source("/dev/urandom");
    423   tmp_config_obj.set_uuid(FLAGS_uuid);
    424 
    425   tmp_config_obj.set_qemu_binary(FLAGS_qemu_binary);
    426   tmp_config_obj.set_crosvm_binary(FLAGS_crosvm_binary);
    427   tmp_config_obj.set_ivserver_binary(FLAGS_ivserver_binary);
    428   tmp_config_obj.set_kernel_log_monitor_binary(FLAGS_kernel_log_monitor_binary);
    429 
    430   tmp_config_obj.set_enable_vnc_server(FLAGS_start_vnc_server);
    431   tmp_config_obj.set_vnc_server_binary(FLAGS_vnc_server_binary);
    432   tmp_config_obj.set_vnc_server_port(FLAGS_vnc_server_port);
    433 
    434   tmp_config_obj.set_enable_stream_audio(FLAGS_start_stream_audio);
    435   tmp_config_obj.set_stream_audio_binary(FLAGS_stream_audio_binary);
    436   tmp_config_obj.set_stream_audio_port(FLAGS_stream_audio_port);
    437 
    438   tmp_config_obj.set_restart_subprocesses(FLAGS_restart_subprocesses);
    439   tmp_config_obj.set_run_adb_connector(FLAGS_run_adb_connector);
    440   tmp_config_obj.set_adb_connector_binary(FLAGS_adb_connector_binary);
    441   tmp_config_obj.set_virtual_usb_manager_binary(
    442       FLAGS_virtual_usb_manager_binary);
    443   tmp_config_obj.set_socket_forward_proxy_binary(
    444       FLAGS_socket_forward_proxy_binary);
    445   tmp_config_obj.set_socket_vsock_proxy_binary(FLAGS_socket_vsock_proxy_binary);
    446   tmp_config_obj.set_run_as_daemon(FLAGS_daemon);
    447   tmp_config_obj.set_run_e2e_test(FLAGS_run_e2e_test);
    448   tmp_config_obj.set_e2e_test_binary(FLAGS_e2e_test_binary);
    449 
    450   tmp_config_obj.set_data_policy(FLAGS_data_policy);
    451   tmp_config_obj.set_blank_data_image_mb(FLAGS_blank_data_image_mb);
    452   tmp_config_obj.set_blank_data_image_fmt(FLAGS_blank_data_image_fmt);
    453 
    454   if(!AdbUsbEnabled(tmp_config_obj)) {
    455     tmp_config_obj.disable_usb_adb();
    456   }
    457 
    458   tmp_config_obj.set_logcat_mode(FLAGS_logcat_mode);
    459   tmp_config_obj.set_logcat_vsock_port(FLAGS_logcat_vsock_port);
    460   tmp_config_obj.set_frames_vsock_port(FLAGS_frames_vsock_port);
    461   if (!tmp_config_obj.enable_ivserver()) {
    462     tmp_config_obj.add_kernel_cmdline(concat("androidboot.vsock_frames_port=",
    463                                              FLAGS_frames_vsock_port));
    464   }
    465 
    466   tmp_config_obj.set_cuttlefish_env_path(GetCuttlefishEnvPath());
    467 
    468   auto config_file = GetConfigFilePath(tmp_config_obj);
    469   auto config_link = vsoc::GetGlobalConfigFileLink();
    470   // Save the config object before starting any host process
    471   if (!tmp_config_obj.SaveToFile(config_file)) {
    472     LOG(ERROR) << "Unable to save config object";
    473     return false;
    474   }
    475   setenv(vsoc::kCuttlefishConfigEnvVarName, config_file.c_str(), true);
    476   if (symlink(config_file.c_str(), config_link.c_str()) != 0) {
    477     LOG(ERROR) << "Failed to create symlink to config file at " << config_link
    478                << ": " << strerror(errno);
    479     return false;
    480   }
    481 
    482   return true;
    483 }
    484 
    485 void SetDefaultFlagsForQemu() {
    486   auto default_mobile_interface = GetPerInstanceDefault("cvd-mbr-");
    487   SetCommandLineOptionWithMode("mobile_interface",
    488                                default_mobile_interface.c_str(),
    489                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    490   auto default_mobile_tap_name = GetPerInstanceDefault("cvd-mtap-");
    491   SetCommandLineOptionWithMode("mobile_tap_name",
    492                                default_mobile_tap_name.c_str(),
    493                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    494   auto default_wifi_tap_name = GetPerInstanceDefault("cvd-wtap-");
    495   SetCommandLineOptionWithMode("wifi_tap_name",
    496                                default_wifi_tap_name.c_str(),
    497                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    498   auto default_instance_dir =
    499       cvd::StringFromEnv("HOME", ".") + "/cuttlefish_runtime";
    500   SetCommandLineOptionWithMode("instance_dir",
    501                                default_instance_dir.c_str(),
    502                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    503   SetCommandLineOptionWithMode("hardware_name", "cutf_ivsh",
    504                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    505   SetCommandLineOptionWithMode("decompress_kernel", "false",
    506                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    507   SetCommandLineOptionWithMode("logcat_mode", cvd::kLogcatSerialMode,
    508                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    509 }
    510 
    511 void SetDefaultFlagsForCrosvm() {
    512   auto default_mobile_interface = GetPerInstanceDefault("cvd-mbr-");
    513   SetCommandLineOptionWithMode("mobile_interface",
    514                                default_mobile_interface.c_str(),
    515                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    516   auto default_mobile_tap_name = GetPerInstanceDefault("cvd-mtap-");
    517   SetCommandLineOptionWithMode("mobile_tap_name",
    518                                default_mobile_tap_name.c_str(),
    519                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    520   auto default_wifi_tap_name = GetPerInstanceDefault("cvd-wtap-");
    521   SetCommandLineOptionWithMode("wifi_tap_name",
    522                                default_wifi_tap_name.c_str(),
    523                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    524   auto default_instance_dir =
    525       cvd::StringFromEnv("HOME", ".") + "/cuttlefish_runtime";
    526   SetCommandLineOptionWithMode("instance_dir",
    527                                default_instance_dir.c_str(),
    528                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    529   SetCommandLineOptionWithMode("hardware_name", "cutf_cvm",
    530                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    531   SetCommandLineOptionWithMode("decompress_kernel", "true",
    532                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    533   SetCommandLineOptionWithMode("run_e2e_test", "false",
    534                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    535   SetCommandLineOptionWithMode("logcat_mode", cvd::kLogcatVsockMode,
    536                                google::FlagSettingMode::SET_FLAGS_DEFAULT);
    537 }
    538 
    539 bool ParseCommandLineFlags(int* argc, char*** argv) {
    540   // The config_file is created by the launcher, so the launcher is the only
    541   // host process that doesn't use the flag.
    542   // Set the default to empty.
    543   google::SetCommandLineOptionWithMode("config_file", "",
    544                                        gflags::SET_FLAGS_DEFAULT);
    545   google::ParseCommandLineNonHelpFlags(argc, argv, true);
    546   bool invalid_manager = false;
    547   if (FLAGS_vm_manager == vm_manager::QemuManager::name()) {
    548     SetDefaultFlagsForQemu();
    549   } else if (FLAGS_vm_manager == vm_manager::CrosvmManager::name()) {
    550     SetDefaultFlagsForCrosvm();
    551   } else {
    552     std::cerr << "Unknown Virtual Machine Manager: " << FLAGS_vm_manager
    553               << std::endl;
    554     invalid_manager = true;
    555   }
    556   google::HandleCommandLineHelpFlags();
    557   if (invalid_manager) {
    558     return false;
    559   }
    560   // Set the env variable to empty (in case the caller passed a value for it).
    561   unsetenv(vsoc::kCuttlefishConfigEnvVarName);
    562 
    563   return ResolveInstanceFiles();
    564 }
    565 
    566 bool CleanPriorFiles() {
    567   // Everything on the instance directory
    568   std::string prior_files = FLAGS_instance_dir + "/*";
    569   // The shared memory file
    570   prior_files += " " + FLAGS_mempath;
    571   // The environment file
    572   prior_files += " " + GetCuttlefishEnvPath();
    573   // The global link to the config file
    574   prior_files += " " + vsoc::GetGlobalConfigFileLink();
    575   LOG(INFO) << "Assuming prior files of " << prior_files;
    576   std::string fuser_cmd = "fuser " + prior_files + " 2> /dev/null";
    577   int rval = std::system(fuser_cmd.c_str());
    578   // fuser returns 0 if any of the files are open
    579   if (WEXITSTATUS(rval) == 0) {
    580     LOG(ERROR) << "Clean aborted: files are in use";
    581     return false;
    582   }
    583   std::string clean_command = "rm -rf " + prior_files;
    584   rval = std::system(clean_command.c_str());
    585   if (WEXITSTATUS(rval) != 0) {
    586     LOG(ERROR) << "Remove of files failed";
    587     return false;
    588   }
    589   return true;
    590 }
    591 
    592 bool DecompressKernel(const std::string& src, const std::string& dst) {
    593   cvd::Command decomp_cmd(FLAGS_kernel_decompresser_executable);
    594   decomp_cmd.AddParameter(src);
    595   auto output_file = cvd::SharedFD::Creat(dst.c_str(), 0666);
    596   if (!output_file->IsOpen()) {
    597     LOG(ERROR) << "Unable to create decompressed image file: "
    598                << output_file->StrError();
    599     return false;
    600   }
    601   decomp_cmd.RedirectStdIO(cvd::Subprocess::StdIOChannel::kStdOut, output_file);
    602   auto decomp_proc = decomp_cmd.Start(false);
    603   return decomp_proc.Started() && decomp_proc.Wait() == 0;
    604 }
    605 } // namespace
    606 
    607 vsoc::CuttlefishConfig* InitFilesystemAndCreateConfig(int* argc, char*** argv) {
    608   if (!ParseCommandLineFlags(argc, argv)) {
    609     LOG(ERROR) << "Failed to parse command arguments";
    610     exit(LauncherExitCodes::kArgumentParsingError);
    611   }
    612 
    613   // Clean up prior files before saving the config file (doing it after would
    614   // delete it)
    615   if (!CleanPriorFiles()) {
    616     LOG(ERROR) << "Failed to clean prior files";
    617     exit(LauncherExitCodes::kPrioFilesCleanupError);
    618   }
    619   // Create instance directory if it doesn't exist.
    620   if (!cvd::DirectoryExists(FLAGS_instance_dir.c_str())) {
    621     LOG(INFO) << "Setting up " << FLAGS_instance_dir;
    622     if (mkdir(FLAGS_instance_dir.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0) {
    623       LOG(ERROR) << "Failed to create instance directory: "
    624                  << FLAGS_instance_dir << ". Error: " << errno;
    625       exit(LauncherExitCodes::kInstanceDirCreationError);
    626     }
    627   }
    628 
    629   if (!cvd::FileHasContent(FLAGS_boot_image)) {
    630     LOG(ERROR) << "File not found: " << FLAGS_boot_image;
    631     exit(cvd::kCuttlefishConfigurationInitError);
    632   }
    633 
    634   auto boot_img_unpacker = cvd::BootImageUnpacker::FromImage(FLAGS_boot_image);
    635 
    636   if (!InitializeCuttlefishConfiguration(*boot_img_unpacker)) {
    637     LOG(ERROR) << "Failed to initialize configuration";
    638     exit(LauncherExitCodes::kCuttlefishConfigurationInitError);
    639   }
    640   // Do this early so that the config object is ready for anything that needs it
    641   auto config = vsoc::CuttlefishConfig::Get();
    642   if (!config) {
    643     LOG(ERROR) << "Failed to obtain config singleton";
    644     exit(LauncherExitCodes::kCuttlefishConfigurationInitError);
    645   }
    646 
    647   if (!boot_img_unpacker->Unpack(config->ramdisk_image_path(),
    648                                  config->use_unpacked_kernel()
    649                                      ? config->kernel_image_path()
    650                                      : "")) {
    651     LOG(ERROR) << "Failed to unpack boot image";
    652     exit(LauncherExitCodes::kBootImageUnpackError);
    653   }
    654 
    655   if (config->decompress_kernel()) {
    656     if (!DecompressKernel(config->kernel_image_path(),
    657         config->decompressed_kernel_image_path())) {
    658       LOG(ERROR) << "Failed to decompress kernel";
    659       exit(LauncherExitCodes::kKernelDecompressError);
    660     }
    661   }
    662 
    663   ValidateAdbModeFlag(*config);
    664 
    665   // Create data if necessary
    666   if (!ApplyDataImagePolicy(*config)) {
    667     exit(cvd::kCuttlefishConfigurationInitError);
    668   }
    669 
    670   CreateBlankImage(FLAGS_metadata_image, FLAGS_blank_metadata_image_mb, "none");
    671 
    672   // Check that the files exist
    673   for (const auto& file :
    674        {config->system_image_path(), config->cache_image_path(),
    675         config->data_image_path(), config->vendor_image_path(),
    676         config->metadata_image_path(),  config->product_image_path(),
    677         config->super_image_path()}) {
    678     if (!file.empty() && !cvd::FileHasContent(file.c_str())) {
    679       LOG(ERROR) << "File not found: " << file;
    680       exit(cvd::kCuttlefishConfigurationInitError);
    681     }
    682   }
    683 
    684   return config;
    685 }
    686 
    687 std::string GetConfigFilePath(const vsoc::CuttlefishConfig& config) {
    688   return config.PerInstancePath("cuttlefish_config.json");
    689 }
    690