| /* |
| * Copyright (C) 2017 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 <limits.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| |
| #include <algorithm> |
| #include <functional> |
| #include <iostream> |
| #include <fstream> |
| #include <iomanip> |
| #include <memory> |
| #include <sstream> |
| #include <string> |
| #include <thread> |
| #include <vector> |
| |
| #include <gflags/gflags.h> |
| #include <glog/logging.h> |
| |
| #include "common/libs/fs/shared_fd.h" |
| #include "common/libs/fs/shared_select.h" |
| #include "common/libs/strings/str_split.h" |
| #include "common/libs/utils/environment.h" |
| #include "common/libs/utils/files.h" |
| #include "common/libs/utils/subprocess.h" |
| #include "common/libs/utils/size_utils.h" |
| #include "common/vsoc/lib/vsoc_memory.h" |
| #include "common/vsoc/shm/screen_layout.h" |
| #include "host/commands/launch/boot_image_unpacker.h" |
| #include "host/commands/launch/launcher_defs.h" |
| #include "host/commands/launch/pre_launch_initializers.h" |
| #include "host/commands/launch/vsoc_shared_memory.h" |
| #include "host/libs/config/cuttlefish_config.h" |
| #include "host/commands/kernel_log_monitor/kernel_log_server.h" |
| #include "host/libs/vm_manager/vm_manager.h" |
| #include "host/libs/vm_manager/libvirt_manager.h" |
| #include "host/libs/vm_manager/qemu_manager.h" |
| |
| using vsoc::GetPerInstanceDefault; |
| using cvd::LauncherExitCodes; |
| |
| DEFINE_string( |
| system_image, "", |
| "Path to the system image, if empty it is assumed to be a file named " |
| "system.img in the directory specified by -system_image_dir"); |
| DEFINE_string(cache_image, "", "Location of the cache partition image."); |
| DEFINE_int32(cpus, 2, "Virtual CPU count."); |
| DEFINE_string(data_image, "", "Location of the data partition image."); |
| DEFINE_string(data_policy, "use_existing", "How to handle userdata partition." |
| " Either 'use_existing', 'create_if_missing', or 'always_create'."); |
| DEFINE_int32(blank_data_image_mb, 0, |
| "The size of the blank data image to generate, MB."); |
| DEFINE_string(blank_data_image_fmt, "ext4", |
| "The fs format for the blank data image. Used with mkfs."); |
| DEFINE_string(qemu_gdb, "", |
| "Debug flag to pass to qemu. e.g. --qemu_gdb=tcp::1234"); |
| |
| DEFINE_int32(x_res, 720, "Width of the screen in pixels"); |
| DEFINE_int32(y_res, 1280, "Height of the screen in pixels"); |
| DEFINE_int32(dpi, 160, "Pixels per inch for the screen"); |
| DEFINE_int32(refresh_rate_hz, 60, "Screen refresh rate in Hertz"); |
| DEFINE_int32(num_screen_buffers, 3, "The number of screen buffers"); |
| |
| DEFINE_bool(disable_app_armor_security, false, |
| "Disable AppArmor security in libvirt. For debug only."); |
| DEFINE_bool(disable_dac_security, false, |
| "Disable DAC security in libvirt. For debug only."); |
| DEFINE_string(kernel_path, "", |
| "Path to the kernel. Overrides the one from the boot image"); |
| DEFINE_string(extra_kernel_cmdline, "", |
| "Additional flags to put on the kernel command line"); |
| DEFINE_int32(loop_max_part, 7, "Maximum number of loop partitions"); |
| DEFINE_string(console, "ttyS0", "Console device for the guest kernel."); |
| DEFINE_string(androidboot_console, "ttyS1", |
| "Console device for the Android framework"); |
| DEFINE_string(hardware_name, "vsoc", |
| "The codename of the device's hardware"); |
| DEFINE_string(guest_security, "selinux", |
| "The security module to use in the guest"); |
| DEFINE_bool(guest_enforce_security, false, |
| "Whether to run in enforcing mode (non permissive). Ignored if " |
| "-guest_security is empty."); |
| DEFINE_bool(guest_audit_security, true, |
| "Whether to log security audits."); |
| DEFINE_string(boot_image, "", "Location of cuttlefish boot image."); |
| DEFINE_int32(memory_mb, 2048, |
| "Total amount of memory available for guest, MB."); |
| std::string g_default_mempath{vsoc::GetDefaultMempath()}; |
| DEFINE_string(mempath, g_default_mempath.c_str(), |
| "Target location for the shmem file."); |
| DEFINE_string(mobile_interface, "", // default handled on ParseCommandLine |
| "Network interface to use for mobile networking"); |
| DEFINE_string(mobile_tap_name, "", // default handled on ParseCommandLine |
| "The name of the tap interface to use for mobile"); |
| std::string g_default_serial_number{GetPerInstanceDefault("CUTTLEFISHCVD")}; |
| DEFINE_string(serial_number, g_default_serial_number.c_str(), |
| "Serial number to use for the device"); |
| DEFINE_string(instance_dir, "", // default handled on ParseCommandLine |
| "A directory to put all instance specific files"); |
| DEFINE_string( |
| vm_manager, |
| vsoc::HostSupportsQemuCli() ? vm_manager::QemuManager::name() |
| : vm_manager::LibvirtManager::name(), |
| "What virtual machine manager to use, one of libvirt or qemu_cli"); |
| DEFINE_string(system_image_dir, vsoc::DefaultGuestImagePath(""), |
| "Location of the system partition images."); |
| DEFINE_string(vendor_image, "", "Location of the vendor partition image."); |
| |
| DEFINE_bool(deprecated_boot_completed, false, "Log boot completed message to" |
| " host kernel. This is only used during transition of our clients." |
| " Will be deprecated soon."); |
| DEFINE_bool(start_vnc_server, true, "Whether to start the vnc server process."); |
| DEFINE_string(vnc_server_binary, |
| vsoc::DefaultHostArtifactsPath("bin/vnc_server"), |
| "Location of the vnc server binary."); |
| DEFINE_string(virtual_usb_manager_binary, |
| vsoc::DefaultHostArtifactsPath("bin/virtual_usb_manager"), |
| "Location of the virtual usb manager binary."); |
| DEFINE_string(kernel_log_monitor_binary, |
| vsoc::DefaultHostArtifactsPath("bin/kernel_log_monitor"), |
| "Location of the log monitor binary."); |
| DEFINE_string(ivserver_binary, |
| vsoc::DefaultHostArtifactsPath("bin/ivserver"), |
| "Location of the ivshmem server binary."); |
| DEFINE_int32(vnc_server_port, GetPerInstanceDefault(6444), |
| "The port on which the vnc server should listen"); |
| DEFINE_string(socket_forward_proxy_binary, |
| vsoc::DefaultHostArtifactsPath("bin/socket_forward_proxy"), |
| "Location of the socket_forward_proxy binary."); |
| DEFINE_string(adb_mode, "tunnel", |
| "Mode for adb connection. Can be 'usb' for usb forwarding, " |
| "'tunnel' for tcp connection, or a comma separated list of types " |
| "as in 'usb,tunnel'"); |
| DEFINE_bool(run_adb_connector, true, |
| "Maintain adb connection by sending 'adb connect' commands to the " |
| "server. Only relevant with --adb_mode=tunnel"); |
| DEFINE_string(adb_connector_binary, |
| vsoc::DefaultHostArtifactsPath("bin/adb_connector"), |
| "Location of the adb_connector binary. Only relevant if " |
| "--run_adb_connector is true"); |
| DEFINE_int32(vhci_port, GetPerInstanceDefault(0), "VHCI port to use for usb"); |
| DEFINE_string(guest_mac_address, |
| GetPerInstanceDefault("00:43:56:44:80:"), // 00:43:56:44:80:0x |
| "MAC address of the wifi interface to be created on the guest."); |
| DEFINE_string(host_mac_address, |
| "42:00:00:00:00:00", |
| "MAC address of the wifi interface running on the host."); |
| DEFINE_string(wifi_interface, "", // default handled on ParseCommandLine |
| "Network interface to use for wifi"); |
| DEFINE_string(wifi_tap_name, "", // default handled on ParseCommandLine |
| "The name of the tap interface to use for wifi"); |
| // TODO(b/72969289) This should be generated |
| DEFINE_string(dtb, "", "Path to the cuttlefish.dtb file"); |
| |
| DEFINE_string(uuid, vsoc::GetPerInstanceDefault(vsoc::kDefaultUuidPrefix), |
| "UUID to use for the device. Random if not specified"); |
| DEFINE_bool(daemon, false, |
| "Run cuttlefish in background, the launcher exits on boot " |
| "completed/failed"); |
| |
| DEFINE_string(device_title, "", "Human readable name for the instance, " |
| "used by the vnc_server for its server title"); |
| |
| DECLARE_string(config_file); |
| |
| namespace { |
| const std::string kDataPolicyUseExisting = "use_existing"; |
| const std::string kDataPolicyCreateIfMissing = "create_if_missing"; |
| const std::string kDataPolicyAlwaysCreate = "always_create"; |
| |
| constexpr char kAdbModeTunnel[] = "tunnel"; |
| constexpr char kAdbModeUsb[] = "usb"; |
| |
| void CreateBlankImage( |
| const std::string& image, int image_mb, const std::string& image_fmt) { |
| LOG(INFO) << "Creating " << image; |
| std::string of = "of="; |
| of += image; |
| std::string count = "count="; |
| count += std::to_string(image_mb); |
| cvd::execute({"/bin/dd", "if=/dev/zero", of, "bs=1M", count}); |
| cvd::execute({"/sbin/mkfs", "-t", image_fmt, image}, {"PATH=/sbin"}); |
| } |
| |
| void RemoveFile(const std::string& file) { |
| LOG(INFO) << "Removing " << file; |
| cvd::execute({"/bin/rm", "-f", file}); |
| } |
| |
| bool ApplyDataImagePolicy(const char* data_image) { |
| bool data_exists = cvd::FileHasContent(data_image); |
| bool remove{}; |
| bool create{}; |
| |
| if (FLAGS_data_policy == kDataPolicyUseExisting) { |
| if (!data_exists) { |
| LOG(ERROR) << "Specified data image file does not exists: " << data_image; |
| return false; |
| } |
| if (FLAGS_blank_data_image_mb > 0) { |
| LOG(ERROR) << "You should NOT use -blank_data_image_mb with -data_policy=" |
| << kDataPolicyUseExisting; |
| return false; |
| } |
| create = false; |
| remove = false; |
| } else if (FLAGS_data_policy == kDataPolicyAlwaysCreate) { |
| remove = data_exists; |
| create = true; |
| } else if (FLAGS_data_policy == kDataPolicyCreateIfMissing) { |
| create = !data_exists; |
| remove = false; |
| } else { |
| LOG(ERROR) << "Invalid data_policy: " << FLAGS_data_policy; |
| return false; |
| } |
| |
| if (remove) { |
| RemoveFile(data_image); |
| } |
| |
| if (create) { |
| if (FLAGS_blank_data_image_mb <= 0) { |
| LOG(ERROR) << "-blank_data_image_mb is required to create data image"; |
| return false; |
| } |
| CreateBlankImage( |
| data_image, FLAGS_blank_data_image_mb, FLAGS_blank_data_image_fmt); |
| } else { |
| LOG(INFO) << data_image << " exists. Not creating it."; |
| } |
| |
| return true; |
| } |
| |
| std::string GetConfigFile() { |
| return vsoc::CuttlefishConfig::Get()->PerInstancePath( |
| "cuttlefish_config.json"); |
| } |
| |
| std::string GetConfigFileArg() { return "-config_file=" + GetConfigFile(); } |
| |
| std::string GetGuestPortArg() { |
| constexpr int kEmulatorPort = 5555; |
| return std::string{"--guest_ports="} + std::to_string(kEmulatorPort); |
| } |
| |
| int GetHostPort() { |
| constexpr int kFirstHostPort = 6520; |
| return vsoc::GetPerInstanceDefault(kFirstHostPort); |
| } |
| |
| std::string GetHostPortArg() { |
| return std::string{"--host_ports="} + std::to_string(GetHostPort()); |
| } |
| |
| std::string GetAdbConnectorPortArg() { |
| return std::string{"--ports="} + std::to_string(GetHostPort()); |
| } |
| |
| bool AdbModeEnabled(const char* mode) { |
| auto modes = cvd::StrSplit(FLAGS_adb_mode, ','); |
| return std::find(modes.begin(), modes.end(), mode) != modes.end(); |
| } |
| |
| bool AdbTunnelEnabled() { |
| return AdbModeEnabled(kAdbModeTunnel); |
| } |
| |
| bool AdbUsbEnabled() { |
| return AdbModeEnabled(kAdbModeUsb); |
| } |
| |
| void ValidateAdbModeFlag() { |
| if (!AdbUsbEnabled() && !AdbTunnelEnabled()) { |
| LOG(INFO) << "ADB not enabled"; |
| } |
| } |
| |
| int CreateIvServerUnixSocket(const std::string& path) { |
| return cvd::SharedFD::SocketLocalServer(path.c_str(), false, SOCK_STREAM, |
| 0666)->UNMANAGED_Dup(); |
| } |
| |
| bool AdbConnectorEnabled() { |
| return FLAGS_run_adb_connector && AdbTunnelEnabled(); |
| } |
| |
| void LaunchUsbServerIfEnabled(vsoc::CuttlefishConfig* config) { |
| if (!AdbUsbEnabled()) { |
| return; |
| } |
| auto socket_name = config->usb_v1_socket_name(); |
| auto usb_v1_server = cvd::SharedFD::SocketLocalServer( |
| socket_name.c_str(), false, SOCK_STREAM, 0666); |
| if (!usb_v1_server->IsOpen()) { |
| LOG(ERROR) << "Unable to create USB v1 server socket: " |
| << usb_v1_server->StrError(); |
| std::exit(cvd::LauncherExitCodes::kUsbV1SocketError); |
| } |
| int server_fd = usb_v1_server->UNMANAGED_Dup(); |
| if (server_fd < 0) { |
| LOG(ERROR) << "Unable to dup USB v1 server socket file descriptor: " |
| << strerror(errno); |
| std::exit(cvd::LauncherExitCodes::kUsbV1SocketError); |
| } |
| |
| cvd::subprocess({FLAGS_virtual_usb_manager_binary, |
| "-usb_v1_fd=" + std::to_string(server_fd), |
| GetConfigFileArg()}); |
| |
| close(server_fd); |
| } |
| |
| void LaunchKernelLogMonitor(vsoc::CuttlefishConfig* config, |
| cvd::SharedFD boot_events_pipe) { |
| auto log_name = config->kernel_log_socket_name(); |
| auto server = cvd::SharedFD::SocketLocalServer(log_name.c_str(), false, |
| SOCK_STREAM, 0666); |
| int server_fd = server->UNMANAGED_Dup(); |
| int subscriber_fd = -1; |
| if (boot_events_pipe->IsOpen()) { |
| subscriber_fd = boot_events_pipe->UNMANAGED_Dup(); |
| } |
| cvd::subprocess({FLAGS_kernel_log_monitor_binary, |
| "-log_server_fd=" + std::to_string(server_fd), |
| "-subscriber_fd=" + std::to_string(subscriber_fd), |
| GetConfigFileArg()}); |
| close(server_fd); |
| if (subscriber_fd >= 0) { |
| close(subscriber_fd); |
| } |
| } |
| |
| void LaunchIvServer(vsoc::CuttlefishConfig* config) { |
| // Resize gralloc region |
| auto actual_width = cvd::AlignToPowerOf2(FLAGS_x_res * 4, 4); // align to 16 |
| uint32_t screen_buffers_size = |
| FLAGS_num_screen_buffers * |
| cvd::AlignToPageSize(actual_width * FLAGS_y_res + 16 /* padding */); |
| screen_buffers_size += |
| (FLAGS_num_screen_buffers - 1) * 4096; /* Guard pages */ |
| |
| // TODO(b/79170615) Resize gralloc region too. |
| |
| vsoc::CreateSharedMemoryFile( |
| config->mempath(), |
| {{vsoc::layout::screen::ScreenLayout::region_name, screen_buffers_size}}); |
| |
| auto qemu_channel = |
| CreateIvServerUnixSocket(config->ivshmem_qemu_socket_path()); |
| auto client_channel = |
| CreateIvServerUnixSocket(config->ivshmem_client_socket_path()); |
| auto qemu_socket_arg = "-qemu_socket_fd=" + std::to_string(qemu_channel); |
| auto client_socket_arg = |
| "-client_socket_fd=" + std::to_string(client_channel); |
| cvd::subprocess({FLAGS_ivserver_binary, qemu_socket_arg, client_socket_arg, |
| GetConfigFileArg()}); |
| close(qemu_channel); |
| close(client_channel); |
| } |
| |
| void LaunchAdbConnectorIfEnabled() { |
| if (AdbConnectorEnabled()) { |
| cvd::subprocess({FLAGS_adb_connector_binary, |
| GetAdbConnectorPortArg()}); |
| } |
| } |
| |
| void LaunchSocketForwardProxyIfEnabled() { |
| if (AdbTunnelEnabled()) { |
| cvd::subprocess({FLAGS_socket_forward_proxy_binary, |
| GetGuestPortArg(), |
| GetHostPortArg(), |
| GetConfigFileArg()}); |
| } |
| } |
| |
| void LaunchVNCServerIfEnabled() { |
| if (FLAGS_start_vnc_server) { |
| // Launch the vnc server, don't wait for it to complete |
| auto port_options = "-port=" + std::to_string(FLAGS_vnc_server_port); |
| cvd::subprocess( |
| {FLAGS_vnc_server_binary, port_options, GetConfigFileArg()}); |
| } |
| } |
| |
| bool ResolveInstanceFiles() { |
| if (FLAGS_system_image_dir.empty()) { |
| LOG(ERROR) << "--system_image_dir must be specified."; |
| return false; |
| } |
| |
| // If user did not specify location of either of these files, expect them to |
| // be placed in --system_image_dir location. |
| if (FLAGS_system_image.empty()) { |
| FLAGS_system_image = FLAGS_system_image_dir + "/system.img"; |
| } |
| if (FLAGS_boot_image.empty()) { |
| FLAGS_boot_image = FLAGS_system_image_dir + "/boot.img"; |
| } |
| if (FLAGS_cache_image.empty()) { |
| FLAGS_cache_image = FLAGS_system_image_dir + "/cache.img"; |
| } |
| if (FLAGS_data_image.empty()) { |
| FLAGS_data_image = FLAGS_system_image_dir + "/userdata.img"; |
| } |
| if (FLAGS_vendor_image.empty()) { |
| FLAGS_vendor_image = FLAGS_system_image_dir + "/vendor.img"; |
| } |
| |
| // Create data if necessary |
| if (!ApplyDataImagePolicy(FLAGS_data_image.c_str())) { |
| return false; |
| } |
| |
| // Check that the files exist |
| for (const auto& file : |
| {FLAGS_system_image, FLAGS_vendor_image, FLAGS_cache_image, |
| FLAGS_data_image, FLAGS_boot_image}) { |
| if (!cvd::FileHasContent(file.c_str())) { |
| LOG(ERROR) << "File not found: " << file; |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool UnpackBootImage(const cvd::BootImageUnpacker& boot_image_unpacker, |
| vsoc::CuttlefishConfig* config) { |
| if (boot_image_unpacker.HasRamdiskImage()) { |
| if (!boot_image_unpacker.ExtractRamdiskImage( |
| config->ramdisk_image_path())) { |
| LOG(ERROR) << "Error extracting ramdisk from boot image"; |
| return false; |
| } |
| } |
| if (!FLAGS_kernel_path.size()) { |
| if (boot_image_unpacker.HasKernelImage()) { |
| if (!boot_image_unpacker.ExtractKernelImage( |
| config->kernel_image_path())) { |
| LOG(ERROR) << "Error extracting kernel from boot image"; |
| return false; |
| } |
| } else { |
| LOG(ERROR) << "No kernel found on boot image"; |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| template<typename S, typename T> |
| static std::string concat(const S& s, const T& t) { |
| std::ostringstream os; |
| os << s << t; |
| return os.str(); |
| } |
| |
| vsoc::CuttlefishConfig* InitializeCuttlefishConfiguration( |
| const cvd::BootImageUnpacker& boot_image_unpacker) { |
| auto& memory_layout = *vsoc::VSoCMemoryLayout::Get(); |
| auto config = vsoc::CuttlefishConfig::Get(); |
| if (!config) { |
| LOG(ERROR) << "Failed to instantiate config object. Most likely because " |
| "config file was specified and doesn't exits: '" |
| << FLAGS_config_file << "'"; |
| return nullptr; |
| } |
| // Set this first so that calls to PerInstancePath below are correct |
| config->set_instance_dir(FLAGS_instance_dir); |
| if (!vm_manager::VmManager::IsValidName(FLAGS_vm_manager)) { |
| LOG(ERROR) << "Invalid vm_manager: " << FLAGS_vm_manager; |
| return nullptr; |
| } |
| config->set_vm_manager(FLAGS_vm_manager); |
| |
| config->set_serial_number(FLAGS_serial_number); |
| |
| config->set_cpus(FLAGS_cpus); |
| config->set_memory_mb(FLAGS_memory_mb); |
| |
| config->set_dpi(FLAGS_dpi); |
| config->set_x_res(FLAGS_x_res); |
| config->set_y_res(FLAGS_y_res); |
| config->set_refresh_rate_hz(FLAGS_refresh_rate_hz); |
| config->set_gdb_flag(FLAGS_qemu_gdb); |
| config->set_adb_mode(FLAGS_adb_mode); |
| config->set_device_title(FLAGS_device_title); |
| if (FLAGS_kernel_path.size()) { |
| config->set_kernel_image_path(FLAGS_kernel_path); |
| } else { |
| config->set_kernel_image_path(config->PerInstancePath("kernel")); |
| } |
| |
| auto ramdisk_path = config->PerInstancePath("ramdisk.img"); |
| bool use_ramdisk = boot_image_unpacker.HasRamdiskImage(); |
| if (!use_ramdisk) { |
| LOG(INFO) << "No ramdisk present; assuming system-as-root build"; |
| ramdisk_path = ""; |
| } |
| |
| // This needs to be done here because the dtb path depends on the presence of |
| // the ramdisk |
| if (FLAGS_dtb.empty()) { |
| if (use_ramdisk) { |
| FLAGS_dtb = vsoc::DefaultHostArtifactsPath("config/initrd-root.dtb"); |
| } else { |
| FLAGS_dtb = vsoc::DefaultHostArtifactsPath("config/system-root.dtb"); |
| } |
| } |
| |
| config->add_kernel_cmdline(boot_image_unpacker.kernel_cmdline()); |
| if (!use_ramdisk) { |
| config->add_kernel_cmdline("root=/dev/vda init=/init"); |
| } |
| config->add_kernel_cmdline( |
| concat("androidboot.serialno=", FLAGS_serial_number)); |
| config->add_kernel_cmdline("mac80211_hwsim.radios=0"); |
| config->add_kernel_cmdline(concat("androidboot.lcd_density=", FLAGS_dpi)); |
| config->add_kernel_cmdline(concat("loop.max_part=", FLAGS_loop_max_part)); |
| if (!FLAGS_console.empty()) { |
| config->add_kernel_cmdline(concat("console=", FLAGS_console)); |
| } |
| if (!FLAGS_androidboot_console.empty()) { |
| config->add_kernel_cmdline( |
| concat("androidboot.console=", FLAGS_androidboot_console)); |
| } |
| if (!FLAGS_hardware_name.empty()) { |
| config->add_kernel_cmdline( |
| concat("androidboot.hardware=", FLAGS_hardware_name)); |
| } |
| if (!FLAGS_guest_security.empty()) { |
| config->add_kernel_cmdline(concat("security=", FLAGS_guest_security)); |
| if (FLAGS_guest_enforce_security) { |
| config->add_kernel_cmdline("enforcing=1"); |
| } else { |
| config->add_kernel_cmdline("enforcing=0"); |
| config->add_kernel_cmdline("androidboot.selinux=permissive"); |
| } |
| if (FLAGS_guest_audit_security) { |
| config->add_kernel_cmdline("audit=1"); |
| } else { |
| config->add_kernel_cmdline("audit=0"); |
| } |
| } |
| if (FLAGS_extra_kernel_cmdline.size()) { |
| config->add_kernel_cmdline(FLAGS_extra_kernel_cmdline); |
| } |
| |
| config->set_ramdisk_image_path(ramdisk_path); |
| config->set_system_image_path(FLAGS_system_image); |
| config->set_cache_image_path(FLAGS_cache_image); |
| config->set_data_image_path(FLAGS_data_image); |
| config->set_vendor_image_path(FLAGS_vendor_image); |
| config->set_dtb_path(FLAGS_dtb); |
| |
| config->set_mempath(FLAGS_mempath); |
| config->set_ivshmem_qemu_socket_path( |
| config->PerInstancePath("ivshmem_socket_qemu")); |
| config->set_ivshmem_client_socket_path( |
| config->PerInstancePath("ivshmem_socket_client")); |
| config->set_ivshmem_vector_count(memory_layout.GetRegions().size()); |
| |
| if (AdbUsbEnabled()) { |
| config->set_usb_v1_socket_name(config->PerInstancePath("usb-v1")); |
| config->set_vhci_port(FLAGS_vhci_port); |
| config->set_usb_ip_socket_name(config->PerInstancePath("usb-ip")); |
| } |
| |
| config->set_kernel_log_socket_name(config->PerInstancePath("kernel-log")); |
| config->set_deprecated_boot_completed(FLAGS_deprecated_boot_completed); |
| config->set_console_path(config->PerInstancePath("console")); |
| config->set_logcat_path(config->PerInstancePath("logcat")); |
| config->set_launcher_log_path(config->PerInstancePath("launcher.log")); |
| config->set_launcher_monitor_socket_path( |
| config->PerInstancePath("launcher_monitor.sock")); |
| |
| config->set_mobile_bridge_name(FLAGS_mobile_interface); |
| config->set_mobile_tap_name(FLAGS_mobile_tap_name); |
| |
| config->set_wifi_bridge_name(FLAGS_wifi_interface); |
| config->set_wifi_tap_name(FLAGS_wifi_tap_name); |
| |
| config->set_wifi_guest_mac_addr(FLAGS_guest_mac_address); |
| config->set_wifi_host_mac_addr(FLAGS_host_mac_address); |
| |
| config->set_entropy_source("/dev/urandom"); |
| config->set_uuid(FLAGS_uuid); |
| |
| config->set_disable_dac_security(FLAGS_disable_dac_security); |
| config->set_disable_app_armor_security(FLAGS_disable_app_armor_security); |
| |
| if(!AdbUsbEnabled()) { |
| config->disable_usb_adb(); |
| } |
| |
| config->set_cuttlefish_env_path(cvd::StringFromEnv("HOME", ".") + |
| "/.cuttlefish.sh"); |
| |
| return config; |
| } |
| |
| void SetDefaultFlagsForQemu() { |
| auto default_mobile_interface = GetPerInstanceDefault("cvd-mbr-"); |
| SetCommandLineOptionWithMode("mobile_interface", |
| default_mobile_interface.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_mobile_tap_name = GetPerInstanceDefault("cvd-mtap-"); |
| SetCommandLineOptionWithMode("mobile_tap_name", |
| default_mobile_tap_name.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_wifi_interface = GetPerInstanceDefault("cvd-wbr-"); |
| SetCommandLineOptionWithMode("wifi_interface", |
| default_wifi_interface.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_wifi_tap_name = GetPerInstanceDefault("cvd-wtap-"); |
| SetCommandLineOptionWithMode("wifi_tap_name", |
| default_wifi_tap_name.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_instance_dir = |
| cvd::StringFromEnv("HOME", ".") + "/cuttlefish_runtime"; |
| SetCommandLineOptionWithMode("instance_dir", |
| default_instance_dir.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| } |
| |
| void SetDefaultFlagsForLibvirt() { |
| auto default_mobile_interface = GetPerInstanceDefault("cvd-mobile-"); |
| SetCommandLineOptionWithMode("mobile_interface", |
| default_mobile_interface.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_mobile_tap_name = GetPerInstanceDefault("amobile"); |
| SetCommandLineOptionWithMode("mobile_tap_name", |
| default_mobile_tap_name.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_wifi_interface = GetPerInstanceDefault("cvd-wifi-"); |
| SetCommandLineOptionWithMode("wifi_interface", |
| default_wifi_interface.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_wifi_tap_name = GetPerInstanceDefault("awifi"); |
| SetCommandLineOptionWithMode("wifi_tap_name", |
| default_wifi_tap_name.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| auto default_instance_dir = |
| "/var/run/libvirt-" + |
| vsoc::GetPerInstanceDefault(vsoc::kDefaultUuidPrefix); |
| SetCommandLineOptionWithMode("instance_dir", |
| default_instance_dir.c_str(), |
| google::FlagSettingMode::SET_FLAGS_DEFAULT); |
| } |
| |
| bool ParseCommandLineFlags(int* argc, char*** argv) { |
| // The config_file is created by the launcher, so the launcher is the only |
| // host process that doesn't use the flag. |
| // Set the default to empty. |
| google::SetCommandLineOptionWithMode("config_file", "", |
| gflags::SET_FLAGS_DEFAULT); |
| google::ParseCommandLineNonHelpFlags(argc, argv, true); |
| bool invalid_manager = false; |
| if (FLAGS_vm_manager == vm_manager::LibvirtManager::name()) { |
| SetDefaultFlagsForLibvirt(); |
| } else if (FLAGS_vm_manager == vm_manager::QemuManager::name()) { |
| SetDefaultFlagsForQemu(); |
| } else { |
| std::cerr << "Unknown Virtual Machine Manager: " << FLAGS_vm_manager |
| << std::endl; |
| invalid_manager = true; |
| } |
| google::HandleCommandLineHelpFlags(); |
| if (invalid_manager) { |
| return false; |
| } |
| // Set the flag value to empty (in case the caller passed a value for it). |
| FLAGS_config_file = ""; |
| |
| ValidateAdbModeFlag(); |
| |
| return ResolveInstanceFiles(); |
| } |
| |
| bool WriteCuttlefishEnvironment(vsoc::CuttlefishConfig* config) { |
| auto env = cvd::SharedFD::Open(config->cuttlefish_env_path().c_str(), |
| O_CREAT | O_RDWR, 0755); |
| if (!env->IsOpen()) { |
| LOG(ERROR) << "Unable to create cuttlefish.env file"; |
| return false; |
| } |
| std::string config_env = "export CUTTLEFISH_PER_INSTANCE_PATH=\"" + |
| config->PerInstancePath(".") + "\"\n"; |
| config_env += "export ANDROID_SERIAL="; |
| if (AdbUsbEnabled()) { |
| config_env += config->serial_number(); |
| } else { |
| config_env += "127.0.0.1:" + std::to_string(GetHostPort()); |
| } |
| config_env += "\n"; |
| env->Write(config_env.c_str(), config_env.size()); |
| return true; |
| } |
| |
| // Forks and returns the write end of a pipe to the child process. The parent |
| // process waits for boot events to come through the pipe and exits accordingly. |
| cvd::SharedFD DaemonizeLauncher(vsoc::CuttlefishConfig* config) { |
| cvd::SharedFD read_end, write_end; |
| if (!cvd::SharedFD::Pipe(&read_end, &write_end)) { |
| LOG(ERROR) << "Unable to create pipe"; |
| return cvd::SharedFD(); // a closed FD |
| } |
| auto pid = fork(); |
| if (pid) { |
| // Explicitly close here, otherwise we may end up reading forever if the |
| // child process dies. |
| write_end->Close(); |
| monitor::BootEvent evt; |
| while(true) { |
| auto bytes_read = read_end->Read(&evt, sizeof(evt)); |
| if (bytes_read != sizeof(evt)) { |
| LOG(ERROR) << "Fail to read a complete event, read " << bytes_read |
| << " bytes only instead of the expected " << sizeof(evt); |
| std::exit(LauncherExitCodes::kPipeIOError); |
| } |
| if (evt == monitor::BootEvent::BootCompleted) { |
| LOG(INFO) << "Virtual device booted successfully"; |
| std::exit(LauncherExitCodes::kSuccess); |
| } |
| if (evt == monitor::BootEvent::BootFailed) { |
| LOG(ERROR) << "Virtual device failed to boot"; |
| std::exit(LauncherExitCodes::kVirtualDeviceBootFailed); |
| } |
| // Do nothing for the other signals |
| } |
| } else { |
| // The child returns the write end of the pipe |
| if (daemon(/*nochdir*/ 1, /*noclose*/ 1) != 0) { |
| LOG(ERROR) << "Failed to daemonize child process: " << strerror(errno); |
| std::exit(LauncherExitCodes::kDaemonizationError); |
| } |
| // Redirect standard I/O |
| auto log_path = config->launcher_log_path(); |
| auto log = |
| cvd::SharedFD::Open(log_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC, |
| S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); |
| if (!log->IsOpen()) { |
| LOG(ERROR) << "Failed to create launcher log file: " << log->StrError(); |
| std::exit(LauncherExitCodes::kDaemonizationError); |
| } |
| auto dev_null = cvd::SharedFD::Open("/dev/null", O_RDONLY); |
| if (!dev_null->IsOpen()) { |
| LOG(ERROR) << "Failed to open /dev/null: " << dev_null->StrError(); |
| std::exit(LauncherExitCodes::kDaemonizationError); |
| } |
| if (dev_null->UNMANAGED_Dup2(0) < 0) { |
| LOG(ERROR) << "Failed dup2 stdin: " << dev_null->StrError(); |
| std::exit(LauncherExitCodes::kDaemonizationError); |
| } |
| if (log->UNMANAGED_Dup2(1) < 0) { |
| LOG(ERROR) << "Failed dup2 stdout: " << log->StrError(); |
| std::exit(LauncherExitCodes::kDaemonizationError); |
| } |
| if (log->UNMANAGED_Dup2(2) < 0) { |
| LOG(ERROR) << "Failed dup2 seterr: " << log->StrError(); |
| std::exit(LauncherExitCodes::kDaemonizationError); |
| } |
| |
| read_end->Close(); |
| return write_end; |
| } |
| } |
| |
| // Stops the device. If this function is successful it returns on a child of the |
| // launcher (after it killed the laucher) and it should exit immediately |
| bool StopCvd(vm_manager::VmManager* vm_manager) { |
| vm_manager->Stop(); |
| auto pgid = getpgid(0); |
| auto child_pid = fork(); |
| if (child_pid > 0) { |
| // The parent just waits for the child to kill it. |
| int wstatus; |
| waitpid(child_pid, &wstatus, 0); |
| LOG(ERROR) << "The forked child exited before delivering signal with " |
| "status: " |
| << wstatus; |
| // If waitpid returns it means the child exited before the signal was |
| // delivered, notify the client of the error and continue serving |
| return false; |
| } else if (child_pid == 0) { |
| // The child makes sure it is in a different process group before |
| // killing everyone on its parent's |
| // This call should never fail (see SETPGID(2)) |
| if (setpgid(0, 0) != 0) { |
| LOG(ERROR) << "setpgid failed (" << strerror(errno) |
| << ") the launcher's child is about to kill itself"; |
| } |
| killpg(pgid, SIGKILL); |
| return true; |
| } else { |
| // The fork failed, the system is in pretty bad shape |
| LOG(FATAL) << "Unable to fork before on Stop: " << strerror(errno); |
| return false; |
| } |
| } |
| |
| void ServerLoop(cvd::SharedFD server, |
| vm_manager::VmManager* vm_manager) { |
| while (true) { |
| // TODO: use select to handle simultaneous connections. |
| auto client = cvd::SharedFD::Accept(*server); |
| cvd::LauncherAction action; |
| while (client->IsOpen() && client->Read(&action, sizeof(action)) > 0) { |
| switch (action) { |
| case cvd::LauncherAction::kStop: |
| if (StopCvd(vm_manager)) { |
| auto response = cvd::LauncherResponse::kSuccess; |
| client->Write(&response, sizeof(response)); |
| std::exit(0); |
| } else { |
| auto response = cvd::LauncherResponse::kError; |
| client->Write(&response, sizeof(response)); |
| } |
| break; |
| default: |
| LOG(ERROR) << "Unrecognized launcher action: " |
| << static_cast<char>(action); |
| auto response = cvd::LauncherResponse::kError; |
| client->Write(&response, sizeof(response)); |
| } |
| } |
| } |
| } |
| } // namespace |
| |
| int main(int argc, char** argv) { |
| ::android::base::InitLogging(argv, android::base::StderrLogger); |
| if (!ParseCommandLineFlags(&argc, &argv)) { |
| return LauncherExitCodes::kArgumentParsingError; |
| } |
| |
| auto boot_img_unpacker = cvd::BootImageUnpacker::FromImage(FLAGS_boot_image); |
| // Do this early so that the config object is ready for anything that needs it |
| auto config = InitializeCuttlefishConfiguration(*boot_img_unpacker); |
| if (!config) { |
| return LauncherExitCodes::kCuttlefishConfigurationInitError; |
| } |
| |
| auto vm_manager = vm_manager::VmManager::Get(config->vm_manager(), config); |
| |
| // Check host configuration |
| std::vector<std::string> config_commands; |
| if (!vm_manager->ValidateHostConfiguration(&config_commands)) { |
| LOG(ERROR) << "Validation of user configuration failed"; |
| std::cout << "Execute the following to correctly configure:" << std::endl; |
| for (auto& command : config_commands) { |
| std::cout << " " << command << std::endl; |
| } |
| std::cout << "You may need to logout for the changes to take effect" |
| << std::endl; |
| return LauncherExitCodes::kInvalidHostConfiguration; |
| } |
| |
| if (!vm_manager->EnsureInstanceDirExists()) { |
| LOG(ERROR) << "Failed to create instance directory: " << FLAGS_instance_dir; |
| return LauncherExitCodes::kInstanceDirCreationError; |
| } |
| |
| if (!vm_manager->CleanPriorFiles()) { |
| LOG(ERROR) << "Failed to clean prior files"; |
| return LauncherExitCodes::kPrioFilesCleanupError; |
| } |
| |
| if (!UnpackBootImage(*boot_img_unpacker, config)) { |
| LOG(ERROR) << "Failed to unpack boot image"; |
| return LauncherExitCodes::kBootImageUnpackError; |
| } |
| |
| if (!WriteCuttlefishEnvironment(config)) { |
| LOG(ERROR) << "Unable to write cuttlefish environment file"; |
| } |
| |
| auto config_file = GetConfigFile(); |
| auto config_link = vsoc::GetGlobalConfigFileLink(); |
| // Save the config object before starting any host process |
| if (!config->SaveToFile(config_file)) { |
| return LauncherExitCodes::kCuttlefishConfigurationSaveError; |
| } |
| if (symlink(config_file.c_str(), config_link.c_str()) != 0) { |
| LOG(ERROR) << "Failed to create symlink to config file at " << config_link |
| << ": " << strerror(errno); |
| return LauncherExitCodes::kCuttlefishConfigurationSaveError; |
| } |
| |
| LOG(INFO) << "The following files contain useful debugging information:"; |
| if (FLAGS_daemon) { |
| LOG(INFO) << " Launcher log: " << config->launcher_log_path(); |
| } |
| LOG(INFO) << " Android's logcat output: " << config->logcat_path(); |
| LOG(INFO) << " Kernel log: " << config->PerInstancePath("kernel.log"); |
| LOG(INFO) << " Instance configuration: " << GetConfigFile(); |
| LOG(INFO) << " Instance environment: " << config->cuttlefish_env_path(); |
| LOG(INFO) << "To access the console run: socat file:$(tty),raw,echo=0 " |
| << config->console_path(); |
| |
| auto launcher_monitor_path = config->launcher_monitor_socket_path(); |
| auto launcher_monitor_socket = cvd::SharedFD::SocketLocalServer( |
| launcher_monitor_path.c_str(), false, SOCK_STREAM, 0666); |
| if (!launcher_monitor_socket->IsOpen()) { |
| LOG(ERROR) << "Error when opening launcher server: " |
| << launcher_monitor_socket->StrError(); |
| return cvd::LauncherExitCodes::kMonitorCreationFailed; |
| } |
| cvd::SharedFD boot_events_pipe; |
| if (FLAGS_daemon) { |
| boot_events_pipe = DaemonizeLauncher(config); |
| if (!boot_events_pipe->IsOpen()) { |
| return LauncherExitCodes::kDaemonizationError; |
| } |
| } else { |
| // Make sure the launcher runs in its own process group even when running in |
| // foreground |
| if (getsid(0) != getpid()) { |
| int retval = setpgid(0, 0); |
| if (retval) { |
| LOG(ERROR) << "Failed to create new process group: " << strerror(errno); |
| std::exit(LauncherExitCodes::kProcessGroupError); |
| } |
| } |
| } |
| |
| LaunchKernelLogMonitor(config, boot_events_pipe); |
| LaunchUsbServerIfEnabled(config); |
| LaunchIvServer(config); |
| |
| // Initialize the regions that require so before the VM starts. |
| PreLaunchInitializers::Initialize(config); |
| |
| // Start the guest VM |
| if (!vm_manager->Start()) { |
| LOG(ERROR) << "Unable to start vm_manager"; |
| // TODO(111453282): All host processes should die here. |
| return LauncherExitCodes::kVMCreationError; |
| } |
| |
| LaunchSocketForwardProxyIfEnabled(); |
| LaunchVNCServerIfEnabled(); |
| LaunchAdbConnectorIfEnabled(); |
| |
| ServerLoop(launcher_monitor_socket, vm_manager); // Should not return |
| LOG(ERROR) << "The server loop returned, it should never happen!!"; |
| return cvd::LauncherExitCodes::kServerError; |
| } |
