Merge "compos: mount BuildManifestSystemExt.apk if exists"
diff --git a/compos/apk/assets/vm_config_system_ext.json b/compos/apk/assets/vm_config_system_ext.json
new file mode 100644
index 0000000..e60dee7
--- /dev/null
+++ b/compos/apk/assets/vm_config_system_ext.json
@@ -0,0 +1,33 @@
+{
+ "version": 1,
+ "os": {
+ "name": "microdroid"
+ },
+ "task": {
+ "type": "executable",
+ "command": "/apex/com.android.compos/bin/compsvc"
+ },
+ "extra_apks": [
+ {
+ "path": "/system/etc/security/fsverity/BuildManifest.apk"
+ },
+ {
+ "path": "/system_ext/etc/security/fsverity/BuildManifestSystemExt.apk"
+ }
+ ],
+ "apexes": [
+ {
+ "name": "com.android.art"
+ },
+ {
+ "name": "com.android.compos"
+ },
+ {
+ "name": "com.android.sdkext"
+ },
+ {
+ "name": "{CLASSPATH}"
+ }
+ ],
+ "export_tombstones": true
+}
diff --git a/compos/apk/assets/vm_config_system_ext_staged.json b/compos/apk/assets/vm_config_system_ext_staged.json
new file mode 100644
index 0000000..99a4160
--- /dev/null
+++ b/compos/apk/assets/vm_config_system_ext_staged.json
@@ -0,0 +1,34 @@
+{
+ "version": 1,
+ "os": {
+ "name": "microdroid"
+ },
+ "task": {
+ "type": "executable",
+ "command": "/apex/com.android.compos/bin/compsvc"
+ },
+ "prefer_staged": true,
+ "extra_apks": [
+ {
+ "path": "/system/etc/security/fsverity/BuildManifest.apk"
+ },
+ {
+ "path": "/system_ext/etc/security/fsverity/BuildManifestSystemExt.apk"
+ }
+ ],
+ "apexes": [
+ {
+ "name": "com.android.art"
+ },
+ {
+ "name": "com.android.compos"
+ },
+ {
+ "name": "com.android.sdkext"
+ },
+ {
+ "name": "{CLASSPATH}"
+ }
+ ],
+ "export_tombstones": true
+}
diff --git a/compos/common/compos_client.rs b/compos/common/compos_client.rs
index 5ea5c06..49396d7 100644
--- a/compos/common/compos_client.rs
+++ b/compos/common/compos_client.rs
@@ -17,7 +17,10 @@
//! Support for starting CompOS in a VM and connecting to the service
use crate::timeouts::TIMEOUTS;
-use crate::{COMPOS_APEX_ROOT, COMPOS_DATA_ROOT, COMPOS_VSOCK_PORT, DEFAULT_VM_CONFIG_PATH};
+use crate::{
+ get_vm_config_path, BUILD_MANIFEST_APK_PATH, BUILD_MANIFEST_SYSTEM_EXT_APK_PATH,
+ COMPOS_APEX_ROOT, COMPOS_DATA_ROOT, COMPOS_VSOCK_PORT,
+};
use android_system_virtualizationservice::aidl::android::system::virtualizationservice::{
IVirtualizationService::IVirtualizationService,
VirtualMachineAppConfig::{DebugLevel::DebugLevel, VirtualMachineAppConfig},
@@ -47,10 +50,10 @@
pub cpus: Option<NonZeroU32>,
/// List of task profiles to apply to the VM
pub task_profiles: Vec<String>,
- /// If present, overrides the path to the VM config JSON file
- pub config_path: Option<String>,
/// If present, overrides the amount of RAM to give the VM
pub memory_mib: Option<i32>,
+ /// Whether the VM prefers staged APEXes or activated ones (false; default)
+ pub prefer_staged: bool,
}
impl ComposClient {
@@ -60,6 +63,7 @@
instance_image: File,
idsig: &Path,
idsig_manifest_apk: &Path,
+ idsig_manifest_ext_apk: &Path,
parameters: &VmParameters,
) -> Result<Self> {
let protected_vm = want_protected_vm()?;
@@ -74,11 +78,27 @@
let apk_fd = ParcelFileDescriptor::new(apk_fd);
let idsig_fd = prepare_idsig(service, &apk_fd, idsig)?;
- let manifest_apk_fd = File::open("/system/etc/security/fsverity/BuildManifest.apk")
+ let manifest_apk_fd = File::open(BUILD_MANIFEST_APK_PATH)
.context("Failed to open build manifest APK file")?;
let manifest_apk_fd = ParcelFileDescriptor::new(manifest_apk_fd);
let idsig_manifest_apk_fd = prepare_idsig(service, &manifest_apk_fd, idsig_manifest_apk)?;
+ // Prepare a few things based on whether /system_ext exists, including:
+ // 1. generate the additional idsig FD for the APK from /system_ext, then pass to VS
+ // 2. select the correct VM config json
+ let (extra_idsigs, has_system_ext) =
+ if let Ok(manifest_ext_apk_fd) = File::open(BUILD_MANIFEST_SYSTEM_EXT_APK_PATH) {
+ // Optional idsig in /system_ext is found, so prepare additionally.
+ let manifest_ext_apk_fd = ParcelFileDescriptor::new(manifest_ext_apk_fd);
+ let idsig_manifest_ext_apk_fd =
+ prepare_idsig(service, &manifest_ext_apk_fd, idsig_manifest_ext_apk)?;
+
+ (vec![idsig_manifest_apk_fd, idsig_manifest_ext_apk_fd], true)
+ } else {
+ (vec![idsig_manifest_apk_fd], false)
+ };
+ let config_path = get_vm_config_path(has_system_ext, parameters.prefer_staged);
+
let debug_level = match (protected_vm, parameters.debug_mode) {
(_, true) => DebugLevel::FULL,
(false, false) => DebugLevel::APP_ONLY,
@@ -97,15 +117,14 @@
(Some(console_fd), Some(log_fd))
};
- let config_path = parameters.config_path.as_deref().unwrap_or(DEFAULT_VM_CONFIG_PATH);
let config = VirtualMachineConfig::AppConfig(VirtualMachineAppConfig {
name: String::from("Compos"),
apk: Some(apk_fd),
idsig: Some(idsig_fd),
instanceImage: Some(instance_fd),
- configPath: config_path.to_owned(),
+ configPath: config_path,
debugLevel: debug_level,
- extraIdsigs: vec![idsig_manifest_apk_fd],
+ extraIdsigs: extra_idsigs,
protectedVm: protected_vm,
memoryMib: parameters.memory_mib.unwrap_or(0), // 0 means use the default
numCpus: parameters.cpus.map_or(1, NonZeroU32::get) as i32,
diff --git a/compos/common/lib.rs b/compos/common/lib.rs
index a5b1ea8..c9555d5 100644
--- a/compos/common/lib.rs
+++ b/compos/common/lib.rs
@@ -48,16 +48,31 @@
/// The file that holds the idsig for the CompOS Payload APK.
pub const IDSIG_FILE: &str = "idsig";
-/// The file that holds the idsig for the build manifest APK (that makes enumerated files from
-/// /system available in CompOS).
+/// The file that holds the idsig for the build manifest APK that makes enumerated files from
+/// /system available in CompOS.
pub const IDSIG_MANIFEST_APK_FILE: &str = "idsig_manifest_apk";
-/// The path within our config APK of our default VM configuration file, used at boot time.
-pub const DEFAULT_VM_CONFIG_PATH: &str = "assets/vm_config.json";
-
-/// The path within our config APK of the VM configuration file we use when compiling staged
-/// APEXes before reboot.
-pub const PREFER_STAGED_VM_CONFIG_PATH: &str = "assets/vm_config_staged.json";
+/// The file that holds the idsig for the build manifest APK that makes enumerated files from
+/// /system_ext available in CompOS.
+pub const IDSIG_MANIFEST_EXT_APK_FILE: &str = "idsig_manifest_ext_apk";
/// Number of CPUs to run dex2oat (actually the entire compos VM) with
pub const DEX2OAT_THREADS_PROP_NAME: &str = "dalvik.vm.boot-dex2oat-threads";
+
+/// The Android path of fs-verity build manifest APK for /system.
+pub const BUILD_MANIFEST_APK_PATH: &str = "/system/etc/security/fsverity/BuildManifest.apk";
+
+/// The Android path of fs-verity build manifest APK for /system_ext.
+pub const BUILD_MANIFEST_SYSTEM_EXT_APK_PATH: &str =
+ "/system_ext/etc/security/fsverity/BuildManifestSystemExt.apk";
+
+/// Returns the path of proper VM config for the current device.
+pub fn get_vm_config_path(has_system_ext: bool, prefer_staged: bool) -> String {
+ match (has_system_ext, prefer_staged) {
+ (false, false) => "assets/vm_config.json",
+ (false, true) => "assets/vm_config_staged.json",
+ (true, false) => "assets/vm_config_system_ext.json",
+ (true, true) => "assets/vm_config_system_ext_staged.json",
+ }
+ .to_owned()
+}
diff --git a/compos/composd/src/instance_manager.rs b/compos/composd/src/instance_manager.rs
index 451222e..c3d6592 100644
--- a/compos/composd/src/instance_manager.rs
+++ b/compos/composd/src/instance_manager.rs
@@ -22,10 +22,7 @@
use anyhow::{bail, Result};
use binder::Strong;
use compos_common::compos_client::VmParameters;
-use compos_common::{
- CURRENT_INSTANCE_DIR, DEX2OAT_THREADS_PROP_NAME, PREFER_STAGED_VM_CONFIG_PATH,
- TEST_INSTANCE_DIR,
-};
+use compos_common::{CURRENT_INSTANCE_DIR, DEX2OAT_THREADS_PROP_NAME, TEST_INSTANCE_DIR};
use rustutils::system_properties;
use std::num::NonZeroU32;
use std::str::FromStr;
@@ -47,16 +44,14 @@
pub fn start_current_instance(&self) -> Result<CompOsInstance> {
let mut vm_parameters = new_vm_parameters()?;
- vm_parameters.config_path = Some(PREFER_STAGED_VM_CONFIG_PATH.to_owned());
+ vm_parameters.prefer_staged = true;
self.start_instance(CURRENT_INSTANCE_DIR, vm_parameters)
}
pub fn start_test_instance(&self, prefer_staged: bool) -> Result<CompOsInstance> {
let mut vm_parameters = new_vm_parameters()?;
vm_parameters.debug_mode = true;
- if prefer_staged {
- vm_parameters.config_path = Some(PREFER_STAGED_VM_CONFIG_PATH.to_owned());
- }
+ vm_parameters.prefer_staged = prefer_staged;
self.start_instance(TEST_INSTANCE_DIR, vm_parameters)
}
diff --git a/compos/composd/src/instance_starter.rs b/compos/composd/src/instance_starter.rs
index aaa4695..fc4c58b 100644
--- a/compos/composd/src/instance_starter.rs
+++ b/compos/composd/src/instance_starter.rs
@@ -24,7 +24,10 @@
use binder::{LazyServiceGuard, ParcelFileDescriptor, Strong};
use compos_aidl_interface::aidl::com::android::compos::ICompOsService::ICompOsService;
use compos_common::compos_client::{ComposClient, VmParameters};
-use compos_common::{COMPOS_DATA_ROOT, IDSIG_FILE, IDSIG_MANIFEST_APK_FILE, INSTANCE_IMAGE_FILE};
+use compos_common::{
+ COMPOS_DATA_ROOT, IDSIG_FILE, IDSIG_MANIFEST_APK_FILE, IDSIG_MANIFEST_EXT_APK_FILE,
+ INSTANCE_IMAGE_FILE,
+};
use log::info;
use std::fs;
use std::path::{Path, PathBuf};
@@ -66,6 +69,7 @@
instance_image: PathBuf,
idsig: PathBuf,
idsig_manifest_apk: PathBuf,
+ idsig_manifest_ext_apk: PathBuf,
vm_parameters: VmParameters,
}
@@ -76,12 +80,14 @@
let instance_image = instance_root_path.join(INSTANCE_IMAGE_FILE);
let idsig = instance_root_path.join(IDSIG_FILE);
let idsig_manifest_apk = instance_root_path.join(IDSIG_MANIFEST_APK_FILE);
+ let idsig_manifest_ext_apk = instance_root_path.join(IDSIG_MANIFEST_EXT_APK_FILE);
Self {
instance_name: instance_name.to_owned(),
instance_root,
instance_image,
idsig,
idsig_manifest_apk,
+ idsig_manifest_ext_apk,
vm_parameters,
}
}
@@ -102,6 +108,7 @@
// Delete existing idsig files. Ignore error in case idsig doesn't exist.
let _ = fs::remove_file(&self.idsig);
let _ = fs::remove_file(&self.idsig_manifest_apk);
+ let _ = fs::remove_file(&self.idsig_manifest_ext_apk);
let instance = self.start_vm(virtualization_service)?;
@@ -126,6 +133,7 @@
instance_image,
&self.idsig,
&self.idsig_manifest_apk,
+ &self.idsig_manifest_ext_apk,
&self.vm_parameters,
)
.context("Starting VM")?;
diff --git a/compos/composd/src/odrefresh_task.rs b/compos/composd/src/odrefresh_task.rs
index 5c926b1..a07a7f9 100644
--- a/compos/composd/src/odrefresh_task.rs
+++ b/compos/composd/src/odrefresh_task.rs
@@ -161,9 +161,18 @@
let output_dir_raw_fd = output_dir_fd.as_raw_fd();
let staging_dir_raw_fd = staging_dir_fd.as_raw_fd();
+ // Get the /system_ext FD differently because it may not exist.
+ // TODO(245761690): pass system_ext_dir_raw_fd to service.odrefresh(...)
+ let (_system_ext_dir_raw_fd, ro_dir_fds) =
+ if let Ok(system_ext_dir_fd) = open_dir(Path::new("/system_ext")) {
+ (system_ext_dir_fd.as_raw_fd(), vec![system_dir_fd, system_ext_dir_fd])
+ } else {
+ (-1, vec![system_dir_fd])
+ };
+
// Spawn a fd_server to serve the FDs.
let fd_server_config = FdServerConfig {
- ro_dir_fds: vec![system_dir_fd],
+ ro_dir_fds,
rw_dir_fds: vec![staging_dir_fd, output_dir_fd],
..Default::default()
};
diff --git a/compos/verify/verify.rs b/compos/verify/verify.rs
index 3abdc74..5b7a8ad 100644
--- a/compos/verify/verify.rs
+++ b/compos/verify/verify.rs
@@ -28,7 +28,7 @@
};
use compos_common::{
COMPOS_DATA_ROOT, CURRENT_INSTANCE_DIR, IDSIG_FILE, IDSIG_MANIFEST_APK_FILE,
- INSTANCE_IMAGE_FILE, TEST_INSTANCE_DIR,
+ IDSIG_MANIFEST_EXT_APK_FILE, INSTANCE_IMAGE_FILE, TEST_INSTANCE_DIR,
};
use log::error;
use std::fs::File;
@@ -93,6 +93,7 @@
let instance_image = instance_dir.join(INSTANCE_IMAGE_FILE);
let idsig = instance_dir.join(IDSIG_FILE);
let idsig_manifest_apk = instance_dir.join(IDSIG_MANIFEST_APK_FILE);
+ let idsig_manifest_ext_apk = instance_dir.join(IDSIG_MANIFEST_EXT_APK_FILE);
let instance_image = File::open(instance_image).context("Failed to open instance image")?;
@@ -111,6 +112,7 @@
instance_image,
&idsig,
&idsig_manifest_apk,
+ &idsig_manifest_ext_apk,
&VmParameters { debug_mode: args.debug, ..Default::default() },
)?;