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android / device / google / cuttlefish / e940de4ec592290b8acda1366bac1cae89c77c2f / . / host / commands / assemble_cvd / flags.cc
blob: 827ac4f964d5585d9bfb78a1b7467c38455f2799 [file] [log] [blame]
#include "host/commands/assemble_cvd/flags.h"
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <unistd.h>
#include <algorithm>
#include <iostream>
#include <fstream>
#include <android-base/strings.h>
#include <gflags/gflags.h>
#include <glog/logging.h>
#include "common/libs/utils/environment.h"
#include "common/libs/utils/files.h"
#include "host/commands/assemble_cvd/boot_image_unpacker.h"
#include "host/commands/assemble_cvd/data_image.h"
#include "host/commands/assemble_cvd/image_aggregator.h"
#include "host/commands/assemble_cvd/assembler_defs.h"
#include "host/commands/assemble_cvd/super_image_mixer.h"
#include "host/libs/config/fetcher_config.h"
#include "host/libs/vm_manager/crosvm_manager.h"
#include "host/libs/vm_manager/qemu_manager.h"
#include "host/libs/vm_manager/vm_manager.h"
using vsoc::ForCurrentInstance;
using cvd::AssemblerExitCodes;
DEFINE_string(cache_image, "", "Location of the cache partition image.");
DEFINE_string(metadata_image, "", "Location of the metadata partition image "
"to be generated.");
DEFINE_int32(blank_metadata_image_mb, 16,
"The size of the blank metadata image to generate, MB.");
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', 'resize_up_to', 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, "f2fs",
"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_string(kernel_path, "",
"Path to the kernel. Overrides the one from the boot image");
DEFINE_string(initramfs_path, "", "Path to the initramfs");
DEFINE_bool(decompress_kernel, false,
"Whether to decompress the kernel 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_bool(guest_enforce_security, true,
"Whether to run in enforcing mode (non permissive).");
DEFINE_bool(guest_audit_security, true,
"Whether to log security audits.");
DEFINE_bool(guest_force_normal_boot, true,
"Whether to force the boot sequence to skip recovery.");
DEFINE_string(boot_image, "",
"Location of cuttlefish boot image. If empty it is assumed to be "
"boot.img in the directory specified by -system_image_dir.");
DEFINE_string(vendor_boot_image, "",
"Location of cuttlefish vendor boot image. If empty it is assumed to "
"be vendor_boot.img in the directory specified by -system_image_dir.");
DEFINE_int32(memory_mb, 2048,
"Total amount of memory available for guest, MB.");
DEFINE_string(serial_number, ForCurrentInstance("CUTTLEFISHCVD"),
"Serial number to use for the device");
DEFINE_string(assembly_dir,
cvd::StringFromEnv("HOME", ".") + "/cuttlefish_assembly",
"A directory to put generated files common between instances");
DEFINE_string(instance_dir,
cvd::StringFromEnv("HOME", ".") + "/cuttlefish_runtime",
"A directory to put all instance specific files");
DEFINE_string(
vm_manager, vm_manager::CrosvmManager::name(),
"What virtual machine manager to use, one of {qemu_cli, crosvm}");
DEFINE_string(
gpu_mode, vsoc::kGpuModeGuestSwiftshader,
"What gpu configuration to use, one of {guest_swiftshader, drm_virgl}");
DEFINE_string(system_image_dir, vsoc::DefaultGuestImagePath(""),
"Location of the system partition images.");
DEFINE_string(super_image, "", "Location of the super partition image.");
DEFINE_string(misc_image, "",
"Location of the misc partition image. If the image does not "
"exist, a blank new misc partition image is created.");
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, false, "Whether to start the vnc server process. "
"The VNC server runs at port 6443 + i for "
"the vsoc-i user or CUTTLEFISH_INSTANCE=i, "
"starting from 1.");
DEFINE_bool(start_webrtc, false, "[Experimental] Whether to start the webrtc process.");
DEFINE_string(
webrtc_assets_dir,
vsoc::DefaultHostArtifactsPath("usr/share/webrtc/assets"),
"[Experimental] Path to WebRTC webpage assets.");
DEFINE_string(
webrtc_certs_dir,
vsoc::DefaultHostArtifactsPath("usr/share/webrtc/certs"),
"[Experimental] Path to WebRTC certificates directory.");
DEFINE_string(
webrtc_public_ip,
"127.0.0.1",
"[Experimental] Public IPv4 address of your server, a.b.c.d format");
DEFINE_bool(
webrtc_enable_adb_websocket,
false,
"[Experimental] If enabled, exposes local adb service through a websocket.");
DEFINE_string(adb_mode, "vsock_half_tunnel",
"Mode for ADB connection."
"'vsock_tunnel' for a TCP connection tunneled through vsock, "
"'native_vsock' for a direct connection to the guest ADB over "
"vsock, 'vsock_half_tunnel' for a TCP connection forwarded to "
"the guest ADB server, or a comma separated list of types as in "
"'native_vsock,vsock_half_tunnel'");
DEFINE_bool(run_adb_connector, true,
"Maintain adb connection by sending 'adb connect' commands to the "
"server. Only relevant with -adb_mode=tunnel or vsock_tunnel");
DEFINE_string(uuid, vsoc::ForCurrentInstance(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");
DEFINE_string(setupwizard_mode, "DISABLED",
"One of DISABLED,OPTIONAL,REQUIRED");
DEFINE_string(qemu_binary,
"/usr/bin/qemu-system-x86_64",
"The qemu binary to use");
DEFINE_string(crosvm_binary,
vsoc::DefaultHostArtifactsPath("bin/crosvm"),
"The Crosvm binary to use");
DEFINE_bool(restart_subprocesses, true, "Restart any crashed host process");
DEFINE_string(logcat_mode, "", "How to send android's log messages from "
"guest to host. One of [serial, vsock]");
DEFINE_bool(enable_tombstone_receiver, true, "Enables the tombstone logger on "
"both the guest and the host");
DEFINE_bool(use_bootloader, false, "Boots the device using a bootloader");
DEFINE_string(bootloader, "", "Bootloader binary path");
DEFINE_string(boot_slot, "", "Force booting into the given slot. If empty, "
"the slot will be chosen based on the misc partition if using a "
"bootloader. It will default to 'a' if empty and not using a "
"bootloader.");
DEFINE_int32(num_instances, 1, "Number of Android guests to launch");
DEFINE_bool(resume, true, "Resume using the disk from the last session, if "
"possible. i.e., if --noresume is passed, the disk "
"will be reset to the state it was initially launched "
"in. This flag is ignored if the underlying partition "
"images have been updated since the first launch.");
namespace {
const std::string kKernelDefaultPath = "kernel";
const std::string kInitramfsImg = "initramfs.img";
const std::string kRamdiskConcatExt = ".concat";
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.
std::string default_boot_image = FLAGS_system_image_dir + "/boot.img";
SetCommandLineOptionWithMode("boot_image", default_boot_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
std::string default_cache_image = FLAGS_system_image_dir + "/cache.img";
SetCommandLineOptionWithMode("cache_image", default_cache_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
std::string default_data_image = FLAGS_system_image_dir + "/userdata.img";
SetCommandLineOptionWithMode("data_image", default_data_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
std::string default_metadata_image = FLAGS_system_image_dir + "/metadata.img";
SetCommandLineOptionWithMode("metadata_image", default_metadata_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
std::string default_super_image = FLAGS_system_image_dir + "/super.img";
SetCommandLineOptionWithMode("super_image", default_super_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
std::string default_misc_image = FLAGS_system_image_dir + "/misc.img";
SetCommandLineOptionWithMode("misc_image", default_misc_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
std::string default_vendor_boot_image = FLAGS_system_image_dir
+ "/vendor_boot.img";
SetCommandLineOptionWithMode("vendor_boot_image",
default_vendor_boot_image.c_str(),
google::FlagSettingMode::SET_FLAGS_DEFAULT);
return true;
}
std::string GetCuttlefishEnvPath() {
return cvd::StringFromEnv("HOME", ".") + "/.cuttlefish.sh";
}
std::string GetLegacyConfigFilePath(const vsoc::CuttlefishConfig& config) {
return config.ForDefaultInstance().PerInstancePath("cuttlefish_config.json");
}
int NumStreamers() {
auto start_flags = {FLAGS_start_vnc_server, FLAGS_start_webrtc};
return std::count(start_flags.begin(), start_flags.end(), true);
}
std::string StrForInstance(const std::string& prefix, int num) {
std::ostringstream stream;
stream << prefix << std::setfill('0') << std::setw(2) << num;
return stream.str();
}
// Initializes the config object and saves it to file. It doesn't return it, all
// further uses of the config should happen through the singleton
vsoc::CuttlefishConfig InitializeCuttlefishConfiguration(
const cvd::BootImageUnpacker& boot_image_unpacker,
const cvd::FetcherConfig& fetcher_config) {
// At most one streamer can be started.
CHECK(NumStreamers() <= 1);
vsoc::CuttlefishConfig tmp_config_obj;
tmp_config_obj.set_assembly_dir(FLAGS_assembly_dir);
if (!vm_manager::VmManager::IsValidName(FLAGS_vm_manager)) {
LOG(FATAL) << "Invalid vm_manager: " << FLAGS_vm_manager;
}
if (!vm_manager::VmManager::IsValidName(FLAGS_vm_manager)) {
LOG(FATAL) << "Invalid vm_manager: " << FLAGS_vm_manager;
}
tmp_config_obj.set_vm_manager(FLAGS_vm_manager);
tmp_config_obj.set_gpu_mode(FLAGS_gpu_mode);
if (vm_manager::VmManager::ConfigureGpuMode(tmp_config_obj.vm_manager(),
tmp_config_obj.gpu_mode()).empty()) {
LOG(FATAL) << "Invalid gpu_mode=" << FLAGS_gpu_mode <<
" does not work with vm_manager=" << FLAGS_vm_manager;
}
tmp_config_obj.set_cpus(FLAGS_cpus);
tmp_config_obj.set_memory_mb(FLAGS_memory_mb);
tmp_config_obj.set_dpi(FLAGS_dpi);
tmp_config_obj.set_setupwizard_mode(FLAGS_setupwizard_mode);
tmp_config_obj.set_x_res(FLAGS_x_res);
tmp_config_obj.set_y_res(FLAGS_y_res);
tmp_config_obj.set_refresh_rate_hz(FLAGS_refresh_rate_hz);
tmp_config_obj.set_gdb_flag(FLAGS_qemu_gdb);
std::vector<std::string> adb = android::base::Split(FLAGS_adb_mode, ",");
tmp_config_obj.set_adb_mode(std::set<std::string>(adb.begin(), adb.end()));
std::string discovered_kernel = fetcher_config.FindCvdFileWithSuffix(kKernelDefaultPath);
std::string foreign_kernel = FLAGS_kernel_path.size() ? FLAGS_kernel_path : discovered_kernel;
if (foreign_kernel.size()) {
tmp_config_obj.set_kernel_image_path(foreign_kernel);
tmp_config_obj.set_use_unpacked_kernel(false);
} else {
tmp_config_obj.set_kernel_image_path(
tmp_config_obj.AssemblyPath(kKernelDefaultPath.c_str()));
tmp_config_obj.set_use_unpacked_kernel(true);
}
tmp_config_obj.set_decompress_kernel(FLAGS_decompress_kernel);
if (FLAGS_decompress_kernel) {
tmp_config_obj.set_decompressed_kernel_image_path(
tmp_config_obj.AssemblyPath("vmlinux"));
}
auto ramdisk_path = tmp_config_obj.AssemblyPath("ramdisk.img");
auto vendor_ramdisk_path = tmp_config_obj.AssemblyPath("vendor_ramdisk.img");
if (!boot_image_unpacker.HasRamdiskImage()) {
LOG(FATAL) << "A ramdisk is required, but the boot image did not have one.";
}
tmp_config_obj.set_boot_image_kernel_cmdline(boot_image_unpacker.kernel_cmdline());
tmp_config_obj.set_loop_max_part(FLAGS_loop_max_part);
tmp_config_obj.set_guest_enforce_security(FLAGS_guest_enforce_security);
tmp_config_obj.set_guest_audit_security(FLAGS_guest_audit_security);
tmp_config_obj.set_guest_force_normal_boot(FLAGS_guest_force_normal_boot);
tmp_config_obj.set_extra_kernel_cmdline(FLAGS_extra_kernel_cmdline);
tmp_config_obj.set_ramdisk_image_path(ramdisk_path);
tmp_config_obj.set_vendor_ramdisk_image_path(vendor_ramdisk_path);
std::string discovered_ramdisk = fetcher_config.FindCvdFileWithSuffix(kInitramfsImg);
std::string foreign_ramdisk = FLAGS_initramfs_path.size () ? FLAGS_initramfs_path : discovered_ramdisk;
if (foreign_kernel.size() && !foreign_ramdisk.size()) {
// If there's a kernel that's passed in without an initramfs, that implies
// user error or a kernel built with no modules. In either case, let's
// choose to avoid loading the modules from the vendor ramdisk which are
// built for the default cf kernel. Once boot occurs, user error will
// become obvious.
tmp_config_obj.set_final_ramdisk_path(ramdisk_path);
} else {
tmp_config_obj.set_final_ramdisk_path(ramdisk_path + kRamdiskConcatExt);
if(foreign_ramdisk.size()) {
tmp_config_obj.set_initramfs_path(foreign_ramdisk);
}
}
tmp_config_obj.set_deprecated_boot_completed(FLAGS_deprecated_boot_completed);
tmp_config_obj.set_logcat_receiver_binary(
vsoc::DefaultHostArtifactsPath("bin/logcat_receiver"));
tmp_config_obj.set_config_server_binary(
vsoc::DefaultHostArtifactsPath("bin/config_server"));
tmp_config_obj.set_qemu_binary(FLAGS_qemu_binary);
tmp_config_obj.set_crosvm_binary(FLAGS_crosvm_binary);
tmp_config_obj.set_console_forwarder_binary(
vsoc::DefaultHostArtifactsPath("bin/console_forwarder"));
tmp_config_obj.set_kernel_log_monitor_binary(
vsoc::DefaultHostArtifactsPath("bin/kernel_log_monitor"));
tmp_config_obj.set_enable_vnc_server(FLAGS_start_vnc_server);
tmp_config_obj.set_vnc_server_binary(
vsoc::DefaultHostArtifactsPath("bin/vnc_server"));
tmp_config_obj.set_enable_webrtc(FLAGS_start_webrtc);
tmp_config_obj.set_webrtc_binary(
vsoc::DefaultHostArtifactsPath("bin/webRTC"));
tmp_config_obj.set_webrtc_assets_dir(FLAGS_webrtc_assets_dir);
tmp_config_obj.set_webrtc_public_ip(FLAGS_webrtc_public_ip);
tmp_config_obj.set_webrtc_certs_dir(FLAGS_webrtc_certs_dir);
tmp_config_obj.set_webrtc_enable_adb_websocket(
FLAGS_webrtc_enable_adb_websocket);
tmp_config_obj.set_restart_subprocesses(FLAGS_restart_subprocesses);
tmp_config_obj.set_run_adb_connector(FLAGS_run_adb_connector);
tmp_config_obj.set_adb_connector_binary(
vsoc::DefaultHostArtifactsPath("bin/adb_connector"));
tmp_config_obj.set_socket_vsock_proxy_binary(
vsoc::DefaultHostArtifactsPath("bin/socket_vsock_proxy"));
tmp_config_obj.set_run_as_daemon(FLAGS_daemon);
tmp_config_obj.set_data_policy(FLAGS_data_policy);
tmp_config_obj.set_blank_data_image_mb(FLAGS_blank_data_image_mb);
tmp_config_obj.set_blank_data_image_fmt(FLAGS_blank_data_image_fmt);
tmp_config_obj.set_logcat_mode(FLAGS_logcat_mode);
tmp_config_obj.set_enable_tombstone_receiver(FLAGS_enable_tombstone_receiver);
tmp_config_obj.set_tombstone_receiver_binary(
vsoc::DefaultHostArtifactsPath("bin/tombstone_receiver"));
tmp_config_obj.set_use_bootloader(FLAGS_use_bootloader);
tmp_config_obj.set_bootloader(FLAGS_bootloader);
if (!FLAGS_boot_slot.empty()) {
tmp_config_obj.set_boot_slot(FLAGS_boot_slot);
}
tmp_config_obj.set_cuttlefish_env_path(GetCuttlefishEnvPath());
std::vector<int> instance_nums;
for (int i = 0; i < FLAGS_num_instances; i++) {
instance_nums.push_back(vsoc::GetInstance() + i);
}
for (const auto& num : instance_nums) {
auto instance = tmp_config_obj.ForInstance(num);
auto const_instance = const_cast<const vsoc::CuttlefishConfig&>(tmp_config_obj)
.ForInstance(num);
// Set this first so that calls to PerInstancePath below are correct
instance.set_instance_dir(FLAGS_instance_dir + "." + std::to_string(num));
instance.set_serial_number(FLAGS_serial_number + std::to_string(num));
instance.set_mobile_bridge_name(StrForInstance("cvd-mbr-", num));
instance.set_mobile_tap_name(StrForInstance("cvd-mtap-", num));
instance.set_wifi_tap_name(StrForInstance("cvd-wtap-", num));
instance.set_vsock_guest_cid(3 + num - 1);
instance.set_uuid(FLAGS_uuid);
instance.set_vnc_server_port(6444 + num - 1);
instance.set_host_port(6520 + num - 1);
instance.set_adb_ip_and_port("127.0.0.1:" + std::to_string(6520 + num - 1));
instance.set_device_title(FLAGS_device_title);
instance.set_virtual_disk_paths({const_instance.PerInstancePath("overlay.img")});
}
return tmp_config_obj;
}
bool SaveConfig(const vsoc::CuttlefishConfig& tmp_config_obj) {
auto config_file = GetConfigFilePath(tmp_config_obj);
auto config_link = vsoc::GetGlobalConfigFileLink();
// Save the config object before starting any host process
if (!tmp_config_obj.SaveToFile(config_file)) {
LOG(ERROR) << "Unable to save config object";
return false;
}
auto legacy_config_file = GetLegacyConfigFilePath(tmp_config_obj);
if (!tmp_config_obj.SaveToFile(legacy_config_file)) {
LOG(ERROR) << "Unable to save legacy config object";
return false;
}
setenv(vsoc::kCuttlefishConfigEnvVarName, config_file.c_str(), true);
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 false;
}
return true;
}
void SetDefaultFlagsForQemu() {
// TODO(b/144119457) Use the serial port.
SetCommandLineOptionWithMode("logcat_mode", cvd::kLogcatVsockMode,
google::FlagSettingMode::SET_FLAGS_DEFAULT);
}
void SetDefaultFlagsForCrosvm() {
SetCommandLineOptionWithMode("logcat_mode", cvd::kLogcatVsockMode,
google::FlagSettingMode::SET_FLAGS_DEFAULT);
}
bool ParseCommandLineFlags(int* argc, char*** argv) {
google::ParseCommandLineNonHelpFlags(argc, argv, true);
bool invalid_manager = false;
if (FLAGS_vm_manager == vm_manager::QemuManager::name()) {
SetDefaultFlagsForQemu();
} else if (FLAGS_vm_manager == vm_manager::CrosvmManager::name()) {
SetDefaultFlagsForCrosvm();
} else {
std::cerr << "Unknown Virtual Machine Manager: " << FLAGS_vm_manager
<< std::endl;
invalid_manager = true;
}
if (NumStreamers() == 0) {
// This makes the vnc server the default streamer unless the user requests
// another via a --star_<streamer> flag, while at the same time it's
// possible to run without any streamer by setting --start_vnc_server=false.
SetCommandLineOptionWithMode("start_vnc_server", "true",
google::FlagSettingMode::SET_FLAGS_DEFAULT);
}
google::HandleCommandLineHelpFlags();
if (invalid_manager) {
return false;
}
// Set the env variable to empty (in case the caller passed a value for it).
unsetenv(vsoc::kCuttlefishConfigEnvVarName);
return ResolveInstanceFiles();
}
std::string cpp_basename(const std::string& str) {
char* copy = strdup(str.c_str()); // basename may modify its argument
std::string ret(basename(copy));
free(copy);
return ret;
}
bool CleanPriorFiles(const std::string& path, const std::set<std::string>& preserving) {
if (preserving.count(cpp_basename(path))) {
LOG(INFO) << "Preserving: " << path;
return true;
}
struct stat statbuf;
if (lstat(path.c_str(), &statbuf) < 0) {
int error_num = errno;
if (error_num == ENOENT) {
return true;
} else {
LOG(ERROR) << "Could not stat \"" << path << "\": " << strerror(error_num);
return false;
}
}
if ((statbuf.st_mode & S_IFMT) != S_IFDIR) {
LOG(INFO) << "Deleting: " << path;
if (unlink(path.c_str()) < 0) {
int error_num = errno;
LOG(ERROR) << "Could not unlink \"" << path << "\", error was " << strerror(error_num);
return false;
}
return true;
}
std::unique_ptr<DIR, int(*)(DIR*)> dir(opendir(path.c_str()), closedir);
if (!dir) {
int error_num = errno;
LOG(ERROR) << "Could not clean \"" << path << "\": error was " << strerror(error_num);
return false;
}
for (auto entity = readdir(dir.get()); entity != nullptr; entity = readdir(dir.get())) {
std::string entity_name(entity->d_name);
if (entity_name == "." || entity_name == "..") {
continue;
}
std::string entity_path = path + "/" + entity_name;
if (!CleanPriorFiles(entity_path.c_str(), preserving)) {
return false;
}
}
if (rmdir(path.c_str()) < 0) {
if (!(errno == EEXIST || errno == ENOTEMPTY)) {
// If EEXIST or ENOTEMPTY, probably because a file was preserved
int error_num = errno;
LOG(ERROR) << "Could not rmdir \"" << path << "\", error was " << strerror(error_num);
return false;
}
}
return true;
}
bool CleanPriorFiles(const std::vector<std::string>& paths, const std::set<std::string>& preserving) {
std::string prior_files;
for (auto path : paths) {
struct stat statbuf;
if (stat(path.c_str(), &statbuf) < 0 && errno != ENOENT) {
// If ENOENT, it doesn't exist yet, so there is no work to do'
int error_num = errno;
LOG(ERROR) << "Could not stat \"" << path << "\": " << strerror(error_num);
return false;
}
bool is_directory = (statbuf.st_mode & S_IFMT) == S_IFDIR;
prior_files += (is_directory ? (path + "/*") : path) + " ";
}
LOG(INFO) << "Assuming prior files of " << prior_files;
std::string lsof_cmd = "lsof -t " + prior_files + " >/dev/null 2>&1";
int rval = std::system(lsof_cmd.c_str());
// lsof returns 0 if any of the files are open
if (WEXITSTATUS(rval) == 0) {
LOG(ERROR) << "Clean aborted: files are in use";
return false;
}
for (const auto& path : paths) {
if (!CleanPriorFiles(path, preserving)) {
LOG(ERROR) << "Remove of file under \"" << path << "\" failed";
return false;
}
}
return true;
}
bool CleanPriorFiles(const vsoc::CuttlefishConfig& config, const std::set<std::string>& preserving) {
std::vector<std::string> paths = {
// Everything in the assembly directory
FLAGS_assembly_dir,
// The environment file
GetCuttlefishEnvPath(),
// The global link to the config file
vsoc::GetGlobalConfigFileLink(),
};
for (const auto& instance : config.Instances()) {
paths.push_back(instance.instance_dir());
}
paths.push_back(FLAGS_instance_dir);
return CleanPriorFiles(paths, preserving);
}
bool DecompressKernel(const std::string& src, const std::string& dst) {
cvd::Command decomp_cmd(vsoc::DefaultHostArtifactsPath("bin/extract-vmlinux"));
decomp_cmd.AddParameter(src);
auto output_file = cvd::SharedFD::Creat(dst.c_str(), 0666);
if (!output_file->IsOpen()) {
LOG(ERROR) << "Unable to create decompressed image file: "
<< output_file->StrError();
return false;
}
decomp_cmd.RedirectStdIO(cvd::Subprocess::StdIOChannel::kStdOut, output_file);
auto decomp_proc = decomp_cmd.Start();
return decomp_proc.Started() && decomp_proc.Wait() == 0;
}
void ValidateAdbModeFlag(const vsoc::CuttlefishConfig& config) {
auto adb_modes = config.adb_mode();
adb_modes.erase(vsoc::AdbMode::Unknown);
if (adb_modes.size() < 1) {
LOG(INFO) << "ADB not enabled";
}
}
} // namespace
namespace {
std::vector<ImagePartition> disk_config() {
std::vector<ImagePartition> partitions;
partitions.push_back(ImagePartition {
.label = "super",
.image_file_path = FLAGS_super_image,
});
partitions.push_back(ImagePartition {
.label = "userdata",
.image_file_path = FLAGS_data_image,
});
partitions.push_back(ImagePartition {
.label = "cache",
.image_file_path = FLAGS_cache_image,
});
partitions.push_back(ImagePartition {
.label = "metadata",
.image_file_path = FLAGS_metadata_image,
});
partitions.push_back(ImagePartition {
.label = "boot",
.image_file_path = FLAGS_boot_image,
});
partitions.push_back(ImagePartition {
.label = "misc",
.image_file_path = FLAGS_misc_image
});
return partitions;
}
std::chrono::system_clock::time_point LastUpdatedInputDisk() {
std::chrono::system_clock::time_point ret;
for (auto& partition : disk_config()) {
auto partition_mod_time = cvd::FileModificationTime(partition.image_file_path);
if (partition_mod_time > ret) {
ret = partition_mod_time;
}
}
return ret;
}
bool ShouldCreateCompositeDisk(const vsoc::CuttlefishConfig& config) {
if (!cvd::FileExists(config.composite_disk_path())) {
return true;
}
auto composite_age = cvd::FileModificationTime(config.composite_disk_path());
return composite_age < LastUpdatedInputDisk();
}
bool ConcatRamdisks(const std::string& new_ramdisk_path, const std::string& ramdisk_a_path,
const std::string& ramdisk_b_path) {
// clear out file of any pre-existing content
std::ofstream new_ramdisk(new_ramdisk_path, std::ios_base::binary | std::ios_base::trunc);
std::ifstream ramdisk_a(ramdisk_a_path, std::ios_base::binary);
std::ifstream ramdisk_b(ramdisk_b_path, std::ios_base::binary);
if(!new_ramdisk.is_open() || !ramdisk_a.is_open() || !ramdisk_b.is_open()) {
return false;
}
new_ramdisk << ramdisk_a.rdbuf() << ramdisk_b.rdbuf();
return true;
}
off_t AvailableSpaceAtPath(const std::string& path) {
struct statvfs vfs;
if (statvfs(path.c_str(), &vfs) != 0) {
int error_num = errno;
LOG(ERROR) << "Could not find space available at " << path << ", error was "
<< strerror(error_num);
return 0;
}
return vfs.f_bsize * vfs.f_bavail; // block size * free blocks for unprivileged users
}
off_t USERDATA_IMAGE_RESERVED = 4l * (1l << 30l); // 4 GiB
off_t AGGREGATE_IMAGE_RESERVED = 12l * (1l << 30l); // 12 GiB
bool CreateCompositeDisk(const vsoc::CuttlefishConfig& config) {
if (!cvd::SharedFD::Open(config.composite_disk_path().c_str(), O_WRONLY | O_CREAT, 0644)->IsOpen()) {
LOG(ERROR) << "Could not ensure " << config.composite_disk_path() << " exists";
return false;
}
if (FLAGS_vm_manager == vm_manager::CrosvmManager::name()) {
auto existing_size = cvd::FileSize(FLAGS_data_image);
auto available_space = AvailableSpaceAtPath(FLAGS_data_image);
if (available_space < USERDATA_IMAGE_RESERVED - existing_size) {
// TODO(schuffelen): Duplicate this check in run_cvd when it can run on a separate machine
LOG(ERROR) << "Not enough space in fs containing " << FLAGS_data_image;
LOG(ERROR) << "Wanted " << (USERDATA_IMAGE_RESERVED - existing_size);
LOG(ERROR) << "Got " << available_space;
return false;
}
std::string header_path = config.AssemblyPath("gpt_header.img");
std::string footer_path = config.AssemblyPath("gpt_footer.img");
CreateCompositeDisk(disk_config(), header_path, footer_path, config.composite_disk_path());
} else {
auto existing_size = cvd::FileSize(config.composite_disk_path());
auto available_space = AvailableSpaceAtPath(config.composite_disk_path());
if (available_space < AGGREGATE_IMAGE_RESERVED - existing_size) {
LOG(ERROR) << "Not enough space to create " << config.composite_disk_path();
LOG(ERROR) << "Wanted " << (AGGREGATE_IMAGE_RESERVED - existing_size);
LOG(ERROR) << "Got " << available_space;
return false;
}
AggregateImage(disk_config(), config.composite_disk_path());
}
return true;
}
} // namespace
const vsoc::CuttlefishConfig* InitFilesystemAndCreateConfig(
int* argc, char*** argv, cvd::FetcherConfig fetcher_config) {
if (!ParseCommandLineFlags(argc, argv)) {
LOG(ERROR) << "Failed to parse command arguments";
exit(AssemblerExitCodes::kArgumentParsingError);
}
auto boot_img_unpacker =
cvd::BootImageUnpacker::FromImages(FLAGS_boot_image,
FLAGS_vendor_boot_image);
{
// The config object is created here, but only exists in memory until the
// SaveConfig line below. Don't launch cuttlefish subprocesses between these
// two operations, as those will assume they can read the config object from
// disk.
auto config = InitializeCuttlefishConfiguration(*boot_img_unpacker, fetcher_config);
std::set<std::string> preserving;
if (FLAGS_resume && ShouldCreateCompositeDisk(config)) {
LOG(WARNING) << "Requested resuming a previous session (the default behavior) "
<< "but the base images have changed under the overlay, making the "
<< "overlay incompatible. Wiping the overlay files.";
} else if (FLAGS_resume && !ShouldCreateCompositeDisk(config)) {
preserving.insert("overlay.img");
preserving.insert("gpt_header.img");
preserving.insert("gpt_footer.img");
preserving.insert("composite.img");
preserving.insert("access-kregistry");
}
if (!CleanPriorFiles(config, preserving)) {
LOG(ERROR) << "Failed to clean prior files";
exit(AssemblerExitCodes::kPrioFilesCleanupError);
}
// Create assembly directory if it doesn't exist.
if (!cvd::DirectoryExists(FLAGS_assembly_dir.c_str())) {
LOG(INFO) << "Setting up " << FLAGS_assembly_dir;
if (mkdir(FLAGS_assembly_dir.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0
&& errno != EEXIST) {
LOG(ERROR) << "Failed to create assembly directory: "
<< FLAGS_assembly_dir << ". Error: " << errno;
exit(AssemblerExitCodes::kAssemblyDirCreationError);
}
}
for (const auto& instance : config.Instances()) {
// Create instance directory if it doesn't exist.
if (!cvd::DirectoryExists(instance.instance_dir().c_str())) {
LOG(INFO) << "Setting up " << FLAGS_instance_dir << ".N";
if (mkdir(instance.instance_dir().c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0
&& errno != EEXIST) {
LOG(ERROR) << "Failed to create instance directory: "
<< FLAGS_instance_dir << ". Error: " << errno;
exit(AssemblerExitCodes::kInstanceDirCreationError);
}
}
auto internal_dir = instance.instance_dir() + "/" + vsoc::kInternalDirName;
if (!cvd::DirectoryExists(internal_dir)) {
if (mkdir(internal_dir.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) < 0
&& errno != EEXIST) {
LOG(ERROR) << "Failed to create internal instance directory: "
<< internal_dir << ". Error: " << errno;
exit(AssemblerExitCodes::kInstanceDirCreationError);
}
}
}
if (!SaveConfig(config)) {
LOG(ERROR) << "Failed to initialize configuration";
exit(AssemblerExitCodes::kCuttlefishConfigurationInitError);
}
}
std::string first_instance = FLAGS_instance_dir + "." + std::to_string(vsoc::GetInstance());
if (symlink(first_instance.c_str(), FLAGS_instance_dir.c_str()) < 0) {
LOG(ERROR) << "Could not symlink \"" << first_instance << "\" to \"" << FLAGS_instance_dir << "\"";
exit(cvd::kCuttlefishConfigurationInitError);
}
if (!cvd::FileHasContent(FLAGS_boot_image)) {
LOG(ERROR) << "File not found: " << FLAGS_boot_image;
exit(cvd::kCuttlefishConfigurationInitError);
}
if (!cvd::FileHasContent(FLAGS_vendor_boot_image)) {
LOG(ERROR) << "File not found: " << FLAGS_vendor_boot_image;
exit(cvd::kCuttlefishConfigurationInitError);
}
// Do this early so that the config object is ready for anything that needs it
auto config = vsoc::CuttlefishConfig::Get();
if (!config) {
LOG(ERROR) << "Failed to obtain config singleton";
exit(AssemblerExitCodes::kCuttlefishConfigurationInitError);
}
if (!boot_img_unpacker->Unpack(config->ramdisk_image_path(),
config->vendor_ramdisk_image_path(),
config->use_unpacked_kernel()
? config->kernel_image_path()
: "")) {
LOG(ERROR) << "Failed to unpack boot image";
exit(AssemblerExitCodes::kBootImageUnpackError);
}
// TODO(134522463) as part of the bootloader refactor, repack the vendor boot
// image and use the bootloader to load both the boot and vendor ramdisk.
// Until then, this hack to get gki modules into cuttlefish will suffice.
// If a vendor ramdisk comes in via this mechanism, let it supercede the one
// in the vendor boot image. This flag is what kernel presubmit testing uses
// to pass in the kernel ramdisk.
// If no kernel is passed in or an initramfs is made available, the default
// vendor boot ramdisk or the initramfs provided should be appended to the
// boot ramdisk. If a kernel IS provided with no initramfs, it is safe to
// safe to assume that the kernel was built with no modules and expects no
// modules for cf to run properly.
std::string discovered_kernel = fetcher_config.FindCvdFileWithSuffix(kKernelDefaultPath);
std::string foreign_kernel = FLAGS_kernel_path.size() ? FLAGS_kernel_path : discovered_kernel;
std::string discovered_ramdisk = fetcher_config.FindCvdFileWithSuffix(kInitramfsImg);
std::string foreign_ramdisk = FLAGS_initramfs_path.size () ? FLAGS_initramfs_path : discovered_ramdisk;
if(!foreign_kernel.size() || foreign_ramdisk.size()) {
const std::string& vendor_ramdisk_path =
config->initramfs_path().size() ? config->initramfs_path()
: config->vendor_ramdisk_image_path();
if(!ConcatRamdisks(config->final_ramdisk_path(),
config->ramdisk_image_path(), vendor_ramdisk_path)) {
LOG(ERROR) << "Failed to concatenate ramdisk and vendor ramdisk";
exit(AssemblerExitCodes::kInitRamFsConcatError);
}
}
if (config->decompress_kernel()) {
if (!DecompressKernel(config->kernel_image_path(),
config->decompressed_kernel_image_path())) {
LOG(ERROR) << "Failed to decompress kernel";
exit(AssemblerExitCodes::kKernelDecompressError);
}
}
ValidateAdbModeFlag(*config);
// Create misc if necessary
if (!InitializeMiscImage(FLAGS_misc_image)) {
exit(cvd::kCuttlefishConfigurationInitError);
}
// Create data if necessary
if (!ApplyDataImagePolicy(*config, FLAGS_data_image)) {
exit(cvd::kCuttlefishConfigurationInitError);
}
if (!cvd::FileExists(FLAGS_metadata_image)) {
CreateBlankImage(FLAGS_metadata_image, FLAGS_blank_metadata_image_mb, "none");
}
for (const auto& instance : config->Instances()) {
if (!cvd::FileExists(instance.access_kregistry_path())) {
CreateBlankImage(instance.access_kregistry_path(), 2, "none", "1M");
}
}
if (SuperImageNeedsRebuilding(fetcher_config, *config)) {
if (!RebuildSuperImage(fetcher_config, *config, FLAGS_super_image)) {
LOG(ERROR) << "Super image rebuilding requested but could not be completed.";
exit(cvd::kCuttlefishConfigurationInitError);
}
}
if (ShouldCreateCompositeDisk(*config)) {
if (!CreateCompositeDisk(*config)) {
exit(cvd::kDiskSpaceError);
}
}
for (auto instance : config->Instances()) {
auto overlay_path = instance.PerInstancePath("overlay.img");
if (!cvd::FileExists(overlay_path) || ShouldCreateCompositeDisk(*config) || !FLAGS_resume
|| cvd::FileModificationTime(overlay_path) < cvd::FileModificationTime(config->composite_disk_path())) {
if (FLAGS_resume) {
LOG(WARNING) << "Requested to continue an existing session, but the overlay was "
<< "newer than its underlying composite disk. Wiping the overlay.";
}
CreateQcowOverlay(config->crosvm_binary(), config->composite_disk_path(), overlay_path);
CreateBlankImage(instance.access_kregistry_path(), 2, "none", "1M");
}
}
for (auto instance : config->Instances()) {
// Check that the files exist
for (const auto& file : instance.virtual_disk_paths()) {
if (!file.empty() && !cvd::FileHasContent(file.c_str())) {
LOG(ERROR) << "File not found: " << file;
exit(cvd::kCuttlefishConfigurationInitError);
}
}
}
return config;
}
std::string GetConfigFilePath(const vsoc::CuttlefishConfig& config) {
return config.AssemblyPath("cuttlefish_config.json");
}