第一次畫流程圖畫的不好
通過adb install安裝應用時對framework來說會首先調用Pm.java的runInstall()方法
private int runInstall(){
int installFlags = 0;
int userId = UserHandle.USER_ALL;
String installerPackageName = null;
String opt;
String originatingUriString = null;
String referrer = null;
String abi = null;
while ((opt=nextOption()) != null) {
if (opt.equals("-l")) {
installFlags |= PackageManager.INSTALL_FORWARD_LOCK;
} else if (opt.equals("-r")) {
installFlags |= PackageManager.INSTALL_REPLACE_EXISTING;
} else if (opt.equals("-i")) {
installerPackageName = nextOptionData();
if (installerPackageName == null) {
System.err.println("Error: no value specified for -i");
return 1;
}
} else if (opt.equals("-t")) {
installFlags |= PackageManager.INSTALL_ALLOW_TEST;
} else if (opt.equals("-s")) {
// Override if -s option is specified.
installFlags |= PackageManager.INSTALL_EXTERNAL;
} else if (opt.equals("-f")) {
// Override if -s option is specified.
installFlags |= PackageManager.INSTALL_INTERNAL;
} else if (opt.equals("-d")) {
installFlags |= PackageManager.INSTALL_ALLOW_DOWNGRADE;
} else if (opt.equals("--originating-uri")) {
originatingUriString = nextOptionData();
if (originatingUriString == null) {
System.err.println("Error: must supply argument for --originating-uri");
return 1;
}
} else if (opt.equals("--referrer")) {
referrer = nextOptionData();
if (referrer == null) {
System.err.println("Error: must supply argument for --referrer");
return 1;
}
} else if (opt.equals("--abi")) {
abi = checkAbiArgument(nextOptionData());
} else if (opt.equals("--user")) {
userId = Integer.parseInt(nextOptionData());
} else {
System.err.println("Error: Unknown option: " + opt);
return 1;
}
}
if (userId == UserHandle.USER_ALL) {
userId = UserHandle.USER_OWNER;
installFlags |= PackageManager.INSTALL_ALL_USERS;
}
final Uri verificationURI;
final Uri originatingURI;
final Uri referrerURI;
if (originatingUriString != null) {
originatingURI = Uri.parse(originatingUriString);
} else {
originatingURI = null;
}
if (referrer != null) {
referrerURI = Uri.parse(referrer);
} else {
referrerURI = null;
}
// Populate apkURI, must be present
final String apkFilePath = nextArg();
System.err.println("\tpkg: " + apkFilePath);
if (apkFilePath == null) {
System.err.println("Error: no package specified");
return 1;
}
// Populate verificationURI, optionally present
final String verificationFilePath = nextArg();
if (verificationFilePath != null) {
System.err.println("\tver: " + verificationFilePath);
verificationURI = Uri.fromFile(new File(verificationFilePath));
} else {
verificationURI = null;
}
LocalPackageInstallObserver obs = new LocalPackageInstallObserver();
try {
VerificationParams verificationParams = new VerificationParams(verificationURI,
originatingURI, referrerURI, VerificationParams.NO_UID, null);
mPm.installPackageAsUser(apkFilePath, obs.getBinder(), installFlags,
installerPackageName, verificationParams, abi, userId);
synchronized (obs) {
while (!obs.finished) {
try {
obs.wait();
} catch (InterruptedException e) {
}
}
if (obs.result == PackageManager.INSTALL_SUCCEEDED) {
System.out.println("Success");
return 0;
} else {
System.err.println("Failure ["
+ installFailureToString(obs)
+ "]");
return 1;
}
}
} catch (RemoteException e) {
System.err.println(e.toString());
System.err.println(PM_NOT_RUNNING_ERR);
return 1;
}
}
通過代碼可以看出，系統會根據adb傳入的參數做不同的處理並且會檢查文件是否是以.apk結尾，會通過mPm.installPackageAsUser進行apk的安裝，先看下mPm，通過asInterface轉換得到PackageManagerService
IPackageManager mPm;
mPm = IPackageManager.Stub.asInterface(ServiceManager.getService("package"));
關於ServiceManager.getService("package")的參數package是SystemServer調用PackageManagerService的main()方法時加入的
public static final PackageManagerService main(Context context, Installer installer,
boolean factoryTest, boolean onlyCore) {
PackageManagerService m = new PackageManagerService(context, installer,
factoryTest, onlyCore);
ServiceManager.addService("package", m);
return m;
}
然後看下PackageManagerService的installPackageAsUser()方法
@Override
public void installPackageAsUser(String originPath, IPackageInstallObserver2 observer,
int installFlags, String installerPackageName, VerificationParams verificationParams,
String packageAbiOverride, int userId) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.INSTALL_PACKAGES, null);
final int callingUid = Binder.getCallingUid();
enforceCrossUserPermission(callingUid, userId, true, true, "installPackageAsUser");
if (isUserRestricted(userId, UserManager.DISALLOW_INSTALL_APPS)) {
try {
if (observer != null) {
observer.onPackageInstalled("", INSTALL_FAILED_USER_RESTRICTED, null, null);
}
} catch (RemoteException re) {
}
return;
}
if ((callingUid == Process.SHELL_UID) || (callingUid == Process.ROOT_UID)) {
installFlags |= PackageManager.INSTALL_FROM_ADB;
} else {
// Caller holds INSTALL_PACKAGES permission, so we're less strict
// about installerPackageName.
installFlags &= ~PackageManager.INSTALL_FROM_ADB;
installFlags &= ~PackageManager.INSTALL_ALL_USERS;
}
UserHandle user;
if ((installFlags & PackageManager.INSTALL_ALL_USERS) != 0) {
user = UserHandle.ALL;
} else {
user = new UserHandle(userId);
}
verificationParams.setInstallerUid(callingUid);
mFilePath = originPath;
final File originFile = new File(originPath);
final OriginInfo origin = OriginInfo.fromUntrustedFile(originFile);
final Message msg = mHandler.obtainMessage(INIT_COPY);
msg.obj = new InstallParams(origin, observer, installFlags,
installerPackageName, verificationParams, user, packageAbiOverride);
mHandler.sendMessage(msg);
}
這裏面會做一些UID和權限的檢查，只有有權限纔可以安裝apk，在最後通過mHandler傳出INIT_COPY消息，然後看下消息接收的地方doHandleMessage
case INIT_COPY: {
HandlerParams params = (HandlerParams) msg.obj;
int idx = mPendingInstalls.size();
if (DEBUG_INSTALL) Slog.i(TAG, "init_copy idx=" + idx + ": " + params);
// If a bind was already initiated we dont really
// need to do anything. The pending install
// will be processed later on.
if (!mBound) {
// If this is the only one pending we might
// have to bind to the service again.
if (!connectToService()) {
Slog.e(TAG, "Failed to bind to media container service");
params.serviceError();
return;
} else {
// Once we bind to the service, the first
// pending request will be processed.
mPendingInstalls.add(idx, params);
}
} else {
mPendingInstalls.add(idx, params);
// Already bound to the service. Just make
// sure we trigger off processing the first request.
if (idx == 0) {
mHandler.sendEmptyMessage(MCS_BOUND);
}
}
break;
}
在這個方法中mBound主要時用來判斷DefaultContainerService服務是否connect，連接則爲true否則爲false，系統通過mPendingInstalls.add(idx, params);將apk的信息添加在mPendingInstalls中，當我們的apk排在第一位時會觸發mHandler.sendEmptyMessage(MCS_BOUND);真正的去安裝我們的apk，看下MCS_BOUND消息的處理
case MCS_BOUND:{
if (DEBUG_INSTALL) Slog.i(TAG, "mcs_bound");
if (msg.obj != null) {
mContainerService = (IMediaContainerService) msg.obj;
}
if (mContainerService == null) {
// Something seriously wrong. Bail out
Slog.e(TAG, "Cannot bind to media container service");
for (HandlerParams params : mPendingInstalls) {
// Indicate service bind error
params.serviceError();
}
mPendingInstalls.clear();
} else if (mPendingInstalls.size() > 0) {
HandlerParams params = mPendingInstalls.get(0);
if (params != null) {
if (params.startCopy()) {
// We are done... look for more work or to
// go idle.
if (DEBUG_SD_INSTALL) Log.i(TAG,
"Checking for more work or unbind...");
// Delete pending install
if (mPendingInstalls.size() > 0) {
mPendingInstalls.remove(0);
}
if (mPendingInstalls.size() == 0) {
if (mBound) {
if (DEBUG_SD_INSTALL) Log.i(TAG,
"Posting delayed MCS_UNBIND");
removeMessages(MCS_UNBIND);
Message ubmsg = obtainMessage(MCS_UNBIND);
// Unbind after a little delay, to avoid
// continual thrashing.
sendMessageDelayed(ubmsg, 10000);
}
} else {
// There are more pending requests in queue.
// Just post MCS_BOUND message to trigger processing
// of next pending install.
if (DEBUG_SD_INSTALL) Log.i(TAG,
"Posting MCS_BOUND for next work");
mHandler.sendEmptyMessage(MCS_BOUND);
}
}
}
} else {
// Should never happen ideally.
Slog.w(TAG, "Empty queue");
}
break;
}
當MediaContainerService服務正常且apk的信息存在時，系統就會調用params.startCopy()去複製我們的apk，在複製完成之後就會從mPendingInstalls中將這個apk移除隊列並解綁服務，我們繼續看下startCopy()方法
final boolean startCopy() {
boolean res;
try {
if (DEBUG_INSTALL) Slog.i(TAG, "startCopy " + mUser + ": " + this);
if (++mRetries > MAX_RETRIES) {
Slog.w(TAG, "Failed to invoke remote methods on default container service. Giving up");
mHandler.sendEmptyMessage(MCS_GIVE_UP);
handleServiceError();
return false;
} else {
handleStartCopy();
Slog.i(TAG, "Apk copy done");
res = true;
}
} catch (RemoteException e) {
if (DEBUG_INSTALL) Slog.i(TAG, "Posting install MCS_RECONNECT");
mHandler.sendEmptyMessage(MCS_RECONNECT);
res = false;
}
handleReturnCode();
return res;
}
系統通過handleStartCopy()去copy我們的apk，其中涉及一些存儲空間檢查,權限檢查等等安全校驗
handleReturnCode()則是我們apk安裝的下一步
@Override
void handleReturnCode() {
// If mArgs is null, then MCS couldn't be reached. When it
// reconnects, it will try again to install. At that point, this
// will succeed.
if (mArgs != null) {
processPendingInstall(mArgs, mRet);
}
}
通過調用processPendingInstall來進行安裝apk，判斷條件mArgs則是在handleStartCopy()中進行賦值，在handleStartCopy這一步沒有問題時纔會進入processPendingInstall()
private void processPendingInstall(final InstallArgs args, final int currentStatus) {
// Queue up an async operation since the package installation may take a little while.
mHandler.post(new Runnable() {
public void run() {
mHandler.removeCallbacks(this);
// Result object to be returned
PackageInstalledInfo res = new PackageInstalledInfo();
res.returnCode = currentStatus;
res.uid = -1;
res.pkg = null;
res.removedInfo = new PackageRemovedInfo();
if (res.returnCode == PackageManager.INSTALL_SUCCEEDED) {
args.doPreInstall(res.returnCode);
synchronized (mInstallLock) {
installPackageLI(args, res);
}
args.doPostInstall(res.returnCode, res.uid);
}
// A restore should be performed at this point if (a) the install
// succeeded, (b) the operation is not an update, and (c) the new
// package has not opted out of backup participation.
final boolean update = res.removedInfo.removedPackage != null;
final int flags = (res.pkg == null) ? 0 : res.pkg.applicationInfo.flags;
boolean doRestore = !update
&& ((flags & ApplicationInfo.FLAG_ALLOW_BACKUP) != 0);
// Set up the post-install work request bookkeeping. This will be used
// and cleaned up by the post-install event handling regardless of whether
// there's a restore pass performed. Token values are >= 1.
int token;
if (mNextInstallToken < 0) mNextInstallToken = 1;
token = mNextInstallToken++;
PostInstallData data = new PostInstallData(args, res);
mRunningInstalls.put(token, data);
if (DEBUG_INSTALL) Log.v(TAG, "+ starting restore round-trip " + token);
if (res.returnCode == PackageManager.INSTALL_SUCCEEDED && doRestore) {
// Pass responsibility to the Backup Manager. It will perform a
// restore if appropriate, then pass responsibility back to the
// Package Manager to run the post-install observer callbacks
// and broadcasts.
IBackupManager bm = IBackupManager.Stub.asInterface(
ServiceManager.getService(Context.BACKUP_SERVICE));
if (bm != null) {
if (DEBUG_INSTALL) Log.v(TAG, "token " + token
+ " to BM for possible restore");
try {
if (bm.isBackupServiceActive(UserHandle.USER_OWNER)) {
bm.restoreAtInstall(res.pkg.applicationInfo.packageName, token);
} else {
doRestore = false;
}
} catch (RemoteException e) {
// can't happen; the backup manager is local
} catch (Exception e) {
Slog.e(TAG, "Exception trying to enqueue restore", e);
doRestore = false;
}
} else {
Slog.e(TAG, "Backup Manager not found!");
doRestore = false;
}
}
if (!doRestore) {
// No restore possible, or the Backup Manager was mysteriously not
// available -- just fire the post-install work request directly.
if (DEBUG_INSTALL) Log.v(TAG, "No restore - queue post-install for " + token);
Message msg = mHandler.obtainMessage(POST_INSTALL, token, 0);
mHandler.sendMessage(msg);
}
}
});
}
在這個方法中做的事情還是很多的
1 installPackageLI(args, res);負責下一步安裝
2 args.doPostInstall(res.returnCode, res.uid); 判斷是否執行clean操作
3 bm.restoreAtInstall(res.pkg.applicationInfo.packageName, token);對apk進行備份且調用mPackageManagerBinder.finishPackageInstall(token);完成apk的安裝
我們先看下第一步installPackageLI(args, res)
private void installPackageLI(InstallArgs args, PackageInstalledInfo res) {
final int installFlags = args.installFlags;
String installerPackageName = args.installerPackageName;
File tmpPackageFile = new File(args.getCodePath());
boolean forwardLocked = ((installFlags & PackageManager.INSTALL_FORWARD_LOCK) != 0);
boolean onSd = ((installFlags & PackageManager.INSTALL_EXTERNAL) != 0);
boolean replace = false;
final int scanFlags = SCAN_NEW_INSTALL | SCAN_FORCE_DEX | SCAN_UPDATE_SIGNATURE;
// Result object to be returned
res.returnCode = PackageManager.INSTALL_SUCCEEDED;
if (DEBUG_INSTALL) Slog.d(TAG, "installPackageLI: path=" + tmpPackageFile);
// Retrieve PackageSettings and parse package
final int parseFlags = mDefParseFlags | PackageParser.PARSE_CHATTY
| (forwardLocked ? PackageParser.PARSE_FORWARD_LOCK : 0)
| (onSd ? PackageParser.PARSE_ON_SDCARD : 0);
PackageParser pp = new PackageParser();
pp.setSeparateProcesses(mSeparateProcesses);
pp.setDisplayMetrics(mMetrics);
final PackageParser.Package pkg;
try {
if (DEBUG_INSTALL) Slog.i(TAG, "Start parsing apk: " + installerPackageName);
pkg = pp.parsePackage(tmpPackageFile, parseFlags);
if (DEBUG_INSTALL) Slog.i(TAG, "Parsing done for apk: " + installerPackageName);
} catch (PackageParserException e) {
res.setError("Failed parse during installPackageLI", e);
return;
}
// Mark that we have an install time CPU ABI override.
pkg.cpuAbiOverride = args.abiOverride;
String pkgName = res.name = pkg.packageName;
if ((pkg.applicationInfo.flags&ApplicationInfo.FLAG_TEST_ONLY) != 0) {
if ((installFlags & PackageManager.INSTALL_ALLOW_TEST) == 0) {
res.setError(INSTALL_FAILED_TEST_ONLY, "installPackageLI");
return;
}
}
try {
pp.collectCertificates(pkg, parseFlags);
pp.collectManifestDigest(pkg);
} catch (PackageParserException e) {
res.setError("Failed collect during installPackageLI", e);
return;
}
/* If the installer passed in a manifest digest, compare it now. */
if (args.manifestDigest != null) {
if (DEBUG_INSTALL) {
final String parsedManifest = pkg.manifestDigest == null ? "null"
: pkg.manifestDigest.toString();
Slog.d(TAG, "Comparing manifests: " + args.manifestDigest.toString() + " vs. "
+ parsedManifest);
}
if (!args.manifestDigest.equals(pkg.manifestDigest)) {
res.setError(INSTALL_FAILED_PACKAGE_CHANGED, "Manifest digest changed");
return;
}
} else if (DEBUG_INSTALL) {
final String parsedManifest = pkg.manifestDigest == null
? "null" : pkg.manifestDigest.toString();
Slog.d(TAG, "manifestDigest was not present, but parser got: " + parsedManifest);
}
// Get rid of all references to package scan path via parser.
pp = null;
String oldCodePath = null;
boolean systemApp = false;
/// M: [Operator] record if the original package is an operator package
boolean vendorApp = false;
synchronized (mPackages) {
// Check if installing already existing package
if ((installFlags & PackageManager.INSTALL_REPLACE_EXISTING) != 0) {
String oldName = mSettings.mRenamedPackages.get(pkgName);
if (pkg.mOriginalPackages != null
&& pkg.mOriginalPackages.contains(oldName)
&& mPackages.containsKey(oldName)) {
// This package is derived from an original package,
// and this device has been updating from that original
// name. We must continue using the original name, so
// rename the new package here.
pkg.setPackageName(oldName);
pkgName = pkg.packageName;
replace = true;
if (DEBUG_INSTALL) Slog.d(TAG, "Replacing existing renamed package: oldName="
+ oldName + " pkgName=" + pkgName);
} else if (mPackages.containsKey(pkgName)) {
// This package, under its official name, already exists
// on the device; we should replace it.
replace = true;
if (DEBUG_INSTALL) Slog.d(TAG, "Replace existing pacakge: " + pkgName);
}
}
PackageSetting ps = mSettings.mPackages.get(pkgName);
if (ps != null) {
if (DEBUG_INSTALL) Slog.d(TAG, "Existing package: " + ps);
// Quick sanity check that we're signed correctly if updating;
// we'll check this again later when scanning, but we want to
// bail early here before tripping over redefined permissions.
if (!ps.keySetData.isUsingUpgradeKeySets() || ps.sharedUser != null) {
try {
verifySignaturesLP(ps, pkg);
} catch (PackageManagerException e) {
res.setError(e.error, e.getMessage());
return;
}
} else {
if (!checkUpgradeKeySetLP(ps, pkg)) {
res.setError(INSTALL_FAILED_UPDATE_INCOMPATIBLE, "Package "
+ pkg.packageName + " upgrade keys do not match the "
+ "previously installed version");
return;
}
}
oldCodePath = mSettings.mPackages.get(pkgName).codePathString;
if (ps.pkg != null && ps.pkg.applicationInfo != null) {
systemApp = (ps.pkg.applicationInfo.flags &
ApplicationInfo.FLAG_SYSTEM) != 0;
vendorApp = isVendorApp(ps.pkg);
}
res.origUsers = ps.queryInstalledUsers(sUserManager.getUserIds(), true);
}
// Check whether the newly-scanned package wants to define an already-defined perm
int N = pkg.permissions.size();
for (int i = N-1; i >= 0; i--) {
PackageParser.Permission perm = pkg.permissions.get(i);
BasePermission bp = mSettings.mPermissions.get(perm.info.name);
if (bp != null) {
// If the defining package is signed with our cert, it's okay. This
// also includes the "updating the same package" case, of course.
// "updating same package" could also involve key-rotation.
final boolean sigsOk;
if (!bp.sourcePackage.equals(pkg.packageName)
|| !(bp.packageSetting instanceof PackageSetting)
|| !bp.packageSetting.keySetData.isUsingUpgradeKeySets()
|| ((PackageSetting) bp.packageSetting).sharedUser != null) {
sigsOk = compareSignatures(bp.packageSetting.signatures.mSignatures,
pkg.mSignatures) == PackageManager.SIGNATURE_MATCH;
} else {
sigsOk = checkUpgradeKeySetLP((PackageSetting) bp.packageSetting, pkg);
}
if (!sigsOk) {
// If the owning package is the system itself, we log but allow
// install to proceed; we fail the install on all other permission
// redefinitions.
if (!bp.sourcePackage.equals("android")) {
res.setError(INSTALL_FAILED_DUPLICATE_PERMISSION, "Package "
+ pkg.packageName + " attempting to redeclare permission "
+ perm.info.name + " already owned by " + bp.sourcePackage);
res.origPermission = perm.info.name;
res.origPackage = bp.sourcePackage;
return;
} else {
Slog.w(TAG, "Package " + pkg.packageName
+ " attempting to redeclare system permission "
+ perm.info.name + "; ignoring new declaration");
pkg.permissions.remove(i);
}
}
}
}
}
/// M: [Operator] Updated operator apps can only be installed on data storage
if ((systemApp || vendorApp) && onSd) {
// Disable updates to system apps on sdcard
res.setError(INSTALL_FAILED_INVALID_INSTALL_LOCATION,
"Cannot install updates to system or vendor apps on sdcard");
return;
}
if (!args.doRename(res.returnCode, pkg, oldCodePath)) {
res.setError(INSTALL_FAILED_INSUFFICIENT_STORAGE, "Failed rename");
return;
}
if (DEBUG_INSTALL) Slog.i(TAG, "Start installation for package: " + installerPackageName);
mIsInstallApkFlag = true;
if (replace) {
replacePackageLI(pkg, parseFlags, scanFlags | SCAN_REPLACING, args.user,
installerPackageName, res);
} else {
installNewPackageLI(pkg, parseFlags, scanFlags | SCAN_DELETE_DATA_ON_FAILURES,
args.user, installerPackageName, res);
}
if (DEBUG_INSTALL) Slog.i(TAG, "Installation done for package: " + installerPackageName);
synchronized (mPackages) {
final PackageSetting ps = mSettings.mPackages.get(pkgName);
if (ps != null) {
res.newUsers = ps.queryInstalledUsers(sUserManager.getUserIds(), true);
}
}
}
這個方法做的事情很多，通過pp.parsePackage對apk進行解析然後通過pp.collectCertificates(pkg, parseFlags);
和pp.collectManifestDigest(pkg);通過這兩個方法對apk進行簽名證書的解析和保存，關於這部分可參考PMS-應用安裝過程簽名（Android L）
這篇文章中pp.collectManifestDigest(pkg)部分後續補齊
之後系統就會對apk的簽名，證書，權限等進行驗證，最後根據apk是否已經存在會有不同的流程，是否覆蓋安裝
if (replace) {
replacePackageLI(pkg, parseFlags, scanFlags | SCAN_REPLACING, args.user,
installerPackageName, res);
} else {
installNewPackageLI(pkg, parseFlags, scanFlags | SCAN_DELETE_DATA_ON_FAILURES,
args.user, installerPackageName, res);
}
這裏面我們主要看下installNewPackageLI非覆蓋安裝
private void installNewPackageLI(PackageParser.Package pkg,
int parseFlags, int scanFlags, UserHandle user,
String installerPackageName, PackageInstalledInfo res) {
// Remember this for later, in case we need to rollback this install
String pkgName = pkg.packageName;
if (DEBUG_INSTALL) Slog.d(TAG, "installNewPackageLI: " + pkg);
boolean dataDirExists = getDataPathForPackage(pkg.packageName, 0).exists();
synchronized(mPackages) {
if (mSettings.mRenamedPackages.containsKey(pkgName)) {
// A package with the same name is already installed, though
// it has been renamed to an older name. The package we
// are trying to install should be installed as an update to
// the existing one, but that has not been requested, so bail.
res.setError(INSTALL_FAILED_ALREADY_EXISTS, "Attempt to re-install " + pkgName
+ " without first uninstalling package running as "
+ mSettings.mRenamedPackages.get(pkgName));
return;
}
if (mPackages.containsKey(pkgName)) {
// Don't allow installation over an existing package with the same name.
res.setError(INSTALL_FAILED_ALREADY_EXISTS, "Attempt to re-install " + pkgName
+ " without first uninstalling.");
return;
}
}
try {
PackageParser.Package newPackage = scanPackageLI(pkg, parseFlags, scanFlags,
System.currentTimeMillis(), user);
updateSettingsLI(newPackage, installerPackageName, null, null, res);
// delete the partially installed application. the data directory will have to be
// restored if it was already existing
if (res.returnCode != PackageManager.INSTALL_SUCCEEDED) {
// remove package from internal structures. Note that we want deletePackageX to
// delete the package data and cache directories that it created in
// scanPackageLocked, unless those directories existed before we even tried to
// install.
deletePackageLI(pkgName, UserHandle.ALL, false, null, null,
dataDirExists ? PackageManager.DELETE_KEEP_DATA : 0,
res.removedInfo, true);
}
} catch (PackageManagerException e) {
res.setError("Package couldn't be installed in " + pkg.codePath, e);
}
}
在這一部分中，主要做了三件事，
1 scanPackageLI 繼續執行安裝流程
2 updateSettingsLI 更新應用相關的packagesetting
3 deletePackageLI 安裝失敗之後刪除apk相關的資源
其他的先不看，我們繼續看scanPackageLI方法
{
final File scanFile = new File(pkg.codePath);
if (pkg.applicationInfo.getCodePath() == null ||
pkg.applicationInfo.getResourcePath() == null) {
// Bail out. The resource and code paths haven't been set.
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Code and resource paths haven't been set correctly");
}
if(mIsInstallApkFlag) {
Log.d("DYNA", "PackageName: " + pkg.packageName);
Log.d("DYNA", "App Signature: " + pkg.mSignatures[0].toCharsString());
mIsInstallApkFlag = false;
Signature[] testkeySigns = null;
PackageSetting testkeyps = mSettings.mPackages.get("com.android.webview");
if (testkeyps != null) {
PackageParser.Package testkeypkg = testkeyps.pkg;
if(testkeypkg != null) {
testkeySigns = testkeypkg.mSignatures;
}
}
Signature[] platformSigns = null;
PackageSetting platformps = mSettings.mPackages.get("com.mediatek.ppl");
if (platformps != null) {
PackageParser.Package platformpkg = platformps.pkg;
if(platformpkg != null) {
platformSigns = platformpkg.mSignatures;
}
}
if ((parseFlags&PackageParser.PARSE_IS_SYSTEM) != 0) {
pkg.applicationInfo.flags |= ApplicationInfo.FLAG_SYSTEM;
} else {
// Only allow system apps to be flagged as core apps.
pkg.coreApp = false;
}
if ((parseFlags&PackageParser.PARSE_IS_PRIVILEGED) != 0) {
pkg.applicationInfo.flags |= ApplicationInfo.FLAG_PRIVILEGED;
}
/** M: [Operator] Add operator flags @{ */
if ((parseFlags & PackageParser.PARSE_IS_OPERATOR) != 0) {
pkg.applicationInfo.flagsEx |= ApplicationInfo.FLAG_EX_OPERATOR;
}
/** @} */
if (mCustomResolverComponentName != null &&
mCustomResolverComponentName.getPackageName().equals(pkg.packageName)) {
setUpCustomResolverActivity(pkg);
}
if (pkg.packageName.equals("android")) {
synchronized (mPackages) {
if (mAndroidApplication != null) {
Slog.w(TAG, "*************************************************");
Slog.w(TAG, "Core android package being redefined. Skipping.");
Slog.w(TAG, " file=" + scanFile);
Slog.w(TAG, "*************************************************");
throw new PackageManagerException(INSTALL_FAILED_DUPLICATE_PACKAGE,
"Core android package being redefined. Skipping.");
}
// Set up information for our fall-back user intent resolution activity.
mPlatformPackage = pkg;
pkg.mVersionCode = mSdkVersion;
mAndroidApplication = pkg.applicationInfo;
if (!mResolverReplaced) {
mResolveActivity.applicationInfo = mAndroidApplication;
mResolveActivity.name = ResolverActivity.class.getName();
mResolveActivity.packageName = mAndroidApplication.packageName;
mResolveActivity.processName = "system:ui";
mResolveActivity.launchMode = ActivityInfo.LAUNCH_MULTIPLE;
mResolveActivity.documentLaunchMode = ActivityInfo.DOCUMENT_LAUNCH_NEVER;
mResolveActivity.flags = ActivityInfo.FLAG_EXCLUDE_FROM_RECENTS;
mResolveActivity.theme = R.style.Theme_Holo_Dialog_Alert;
mResolveActivity.exported = true;
mResolveActivity.enabled = true;
mResolveInfo.activityInfo = mResolveActivity;
mResolveInfo.priority = 0;
mResolveInfo.preferredOrder = 0;
mResolveInfo.match = 0;
mResolveComponentName = new ComponentName(
mAndroidApplication.packageName, mResolveActivity.name);
}
}
}
/** M: [CIP] skip duplicated mediatek-res.apk @{ */
/// This will replace original resources with CIP resources
if (pkg.packageName.equals("com.mediatek")) {
synchronized (mPackages) {
if (mMediatekApplication != null) {
Slog.w(TAG, "*************************************************");
Slog.w(TAG, "Core mediatek package being redefined. Skipping.");
Slog.w(TAG, " file=" + scanFile);
Slog.w(TAG, "*************************************************");
throw new PackageManagerException(INSTALL_FAILED_DUPLICATE_PACKAGE,
"Core android package being redefined. Skipping.");
}
mMediatekApplication = pkg.applicationInfo;
}
}
/** @} */
if (DEBUG_PACKAGE_SCANNING) {
if ((parseFlags & PackageParser.PARSE_CHATTY) != 0)
Log.d(TAG, "Scanning package " + pkg.packageName);
}
if (mPackages.containsKey(pkg.packageName)
|| mSharedLibraries.containsKey(pkg.packageName)) {
throw new PackageManagerException(INSTALL_FAILED_DUPLICATE_PACKAGE,
"Application package " + pkg.packageName
+ " already installed. Skipping duplicate.");
}
// Initialize package source and resource directories
File destCodeFile = new File(pkg.applicationInfo.getCodePath());
File destResourceFile = new File(pkg.applicationInfo.getResourcePath());
SharedUserSetting suid = null;
PackageSetting pkgSetting = null;
if (!isSystemApp(pkg)) {
// Only system apps can use these features.
pkg.mOriginalPackages = null;
pkg.mRealPackage = null;
pkg.mAdoptPermissions = null;
}
// writer
synchronized (mPackages) {
if (pkg.mSharedUserId != null) {
suid = mSettings.getSharedUserLPw(pkg.mSharedUserId, 0, true);
if (suid == null) {
throw new PackageManagerException(INSTALL_FAILED_INSUFFICIENT_STORAGE,
"Creating application package " + pkg.packageName
+ " for shared user failed");
}
if (DEBUG_PACKAGE_SCANNING) {
if ((parseFlags & PackageParser.PARSE_CHATTY) != 0)
Log.d(TAG, "Shared UserID " + pkg.mSharedUserId + " (uid=" + suid.userId
+ "): packages=" + suid.packages);
}
}
// Check if we are renaming from an original package name.
PackageSetting origPackage = null;
String realName = null;
if (pkg.mOriginalPackages != null) {
// This package may need to be renamed to a previously
// installed name. Let's check on that...
final String renamed = mSettings.mRenamedPackages.get(pkg.mRealPackage);
if (pkg.mOriginalPackages.contains(renamed)) {
// This package had originally been installed as the
// original name, and we have already taken care of
// transitioning to the new one. Just update the new
// one to continue using the old name.
realName = pkg.mRealPackage;
if (!pkg.packageName.equals(renamed)) {
// Callers into this function may have already taken
// care of renaming the package; only do it here if
// it is not already done.
pkg.setPackageName(renamed);
}
} else {
for (int i=pkg.mOriginalPackages.size()-1; i>=0; i--) {
if ((origPackage = mSettings.peekPackageLPr(
pkg.mOriginalPackages.get(i))) != null) {
// We do have the package already installed under its
// original name... should we use it?
if (!verifyPackageUpdateLPr(origPackage, pkg)) {
// New package is not compatible with original.
origPackage = null;
continue;
} else if (origPackage.sharedUser != null) {
// Make sure uid is compatible between packages.
if (!origPackage.sharedUser.name.equals(pkg.mSharedUserId)) {
Slog.w(TAG, "Unable to migrate data from " + origPackage.name
+ " to " + pkg.packageName + ": old uid "
+ origPackage.sharedUser.name
+ " differs from " + pkg.mSharedUserId);
origPackage = null;
continue;
}
} else {
if (DEBUG_UPGRADE) Log.v(TAG, "Renaming new package "
+ pkg.packageName + " to old name " + origPackage.name);
}
break;
}
}
}
}
if (mTransferedPackages.contains(pkg.packageName)) {
Slog.w(TAG, "Package " + pkg.packageName
+ " was transferred to another, but its .apk remains");
}
// Just create the setting, don't add it yet. For already existing packages
// the PkgSetting exists already and doesn't have to be created.
pkgSetting = mSettings.getPackageLPw(pkg, origPackage, realName, suid, destCodeFile,
destResourceFile, pkg.applicationInfo.nativeLibraryRootDir,
pkg.applicationInfo.primaryCpuAbi,
pkg.applicationInfo.secondaryCpuAbi,
pkg.applicationInfo.flags, pkg.applicationInfo.flagsEx, user, false);
if (pkgSetting == null) {
throw new PackageManagerException(INSTALL_FAILED_INSUFFICIENT_STORAGE,
"Creating application package " + pkg.packageName + " failed");
}
if (pkgSetting.origPackage != null) {
// If we are first transitioning from an original package,
// fix up the new package's name now. We need to do this after
// looking up the package under its new name, so getPackageLP
// can take care of fiddling things correctly.
pkg.setPackageName(origPackage.name);
// File a report about this.
String msg = "New package " + pkgSetting.realName
+ " renamed to replace old package " + pkgSetting.name;
reportSettingsProblem(Log.WARN, msg);
// Make a note of it.
mTransferedPackages.add(origPackage.name);
// No longer need to retain this.
pkgSetting.origPackage = null;
}
if (realName != null) {
// Make a note of it.
mTransferedPackages.add(pkg.packageName);
}
if (mSettings.isDisabledSystemPackageLPr(pkg.packageName)) {
/** M: [Operator] Operator package should not have FLAG_UPDATED_SYSTEM_APP @{ */
if ((parseFlags & PackageParser.PARSE_IS_OPERATOR) == 0) {
pkg.applicationInfo.flags |= ApplicationInfo.FLAG_UPDATED_SYSTEM_APP;
}
/** @} */
}
if ((parseFlags&PackageParser.PARSE_IS_SYSTEM_DIR) == 0) {
// Check all shared libraries and map to their actual file path.
// We only do this here for apps not on a system dir, because those
// are the only ones that can fail an install due to this. We
// will take care of the system apps by updating all of their
// library paths after the scan is done.
updateSharedLibrariesLPw(pkg, null);
}
if (mFoundPolicyFile) {
SELinuxMMAC.assignSeinfoValue(pkg);
}
pkg.applicationInfo.uid = pkgSetting.appId;
pkg.mExtras = pkgSetting;
if (!pkgSetting.keySetData.isUsingUpgradeKeySets() || pkgSetting.sharedUser != null) {
try {
verifySignaturesLP(pkgSetting, pkg);
// We just determined the app is signed correctly, so bring
// over the latest parsed certs.
pkgSetting.signatures.mSignatures = pkg.mSignatures;
} catch (PackageManagerException e) {
if (((parseFlags & PackageParser.PARSE_IS_SYSTEM_DIR) | (parseFlags & PackageParser.PARSE_IS_OPERATOR)) == 0) {
throw e;
}
// The signature has changed, but this package is in the system
// image... let's recover!
pkgSetting.signatures.mSignatures = pkg.mSignatures;
// However... if this package is part of a shared user, but it
// doesn't match the signature of the shared user, let's fail.
// What this means is that you can't change the signatures
// associated with an overall shared user, which doesn't seem all
// that unreasonable.
if (pkgSetting.sharedUser != null) {
if (compareSignatures(pkgSetting.sharedUser.signatures.mSignatures,
pkg.mSignatures) != PackageManager.SIGNATURE_MATCH) {
throw new PackageManagerException(
INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES,
"Signature mismatch for shared user : "
+ pkgSetting.sharedUser);
}
}
// File a report about this.
String msg = "System package " + pkg.packageName
+ " signature changed; retaining data.";
reportSettingsProblem(Log.WARN, msg);
}
} else {
if (!checkUpgradeKeySetLP(pkgSetting, pkg)) {
throw new PackageManagerException(INSTALL_FAILED_UPDATE_INCOMPATIBLE, "Package "
+ pkg.packageName + " upgrade keys do not match the "
+ "previously installed version");
} else {
// We just determined the app is signed correctly, so bring
// over the latest parsed certs.
pkgSetting.signatures.mSignatures = pkg.mSignatures;
}
}
// Verify that this new package doesn't have any content providers
// that conflict with existing packages. Only do this if the
// package isn't already installed, since we don't want to break
// things that are installed.
if ((scanFlags & SCAN_NEW_INSTALL) != 0) {
final int N = pkg.providers.size();
int i;
for (i=0; i<N; i++) {
PackageParser.Provider p = pkg.providers.get(i);
if (p.info.authority != null) {
String names[] = p.info.authority.split(";");
for (int j = 0; j < names.length; j++) {
if (mProvidersByAuthority.containsKey(names[j])) {
PackageParser.Provider other = mProvidersByAuthority.get(names[j]);
final String otherPackageName =
((other != null && other.getComponentName() != null) ?
other.getComponentName().getPackageName() : "?");
throw new PackageManagerException(
INSTALL_FAILED_CONFLICTING_PROVIDER,
"Can't install because provider name " + names[j]
+ " (in package " + pkg.applicationInfo.packageName
+ ") is already used by " + otherPackageName);
}
}
}
}
}
if (pkg.mAdoptPermissions != null) {
// This package wants to adopt ownership of permissions from
// another package.
for (int i = pkg.mAdoptPermissions.size() - 1; i >= 0; i--) {
final String origName = pkg.mAdoptPermissions.get(i);
final PackageSetting orig = mSettings.peekPackageLPr(origName);
if (orig != null) {
if (verifyPackageUpdateLPr(orig, pkg)) {
Slog.i(TAG, "Adopting permissions from " + origName + " to "
+ pkg.packageName);
mSettings.transferPermissionsLPw(origName, pkg.packageName);
}
}
}
}
}
final String pkgName = pkg.packageName;
final long scanFileTime = scanFile.lastModified();
final boolean forceDex = (scanFlags & SCAN_FORCE_DEX) != 0;
pkg.applicationInfo.processName = fixProcessName(
pkg.applicationInfo.packageName,
pkg.applicationInfo.processName,
pkg.applicationInfo.uid);
File dataPath;
if (mPlatformPackage == pkg) {
// The system package is special.
dataPath = new File(Environment.getDataDirectory(), "system");
pkg.applicationInfo.dataDir = dataPath.getPath();
} else {
// This is a normal package, need to make its data directory.
dataPath = getDataPathForPackage(pkg.packageName, 0);
boolean uidError = false;
if (dataPath.exists()) {
int currentUid = 0;
try {
StructStat stat = Os.stat(dataPath.getPath());
currentUid = stat.st_uid;
} catch (ErrnoException e) {
Slog.e(TAG, "Couldn't stat path " + dataPath.getPath(), e);
}
// If we have mismatched owners for the data path, we have a problem.
if (currentUid != pkg.applicationInfo.uid) {
boolean recovered = false;
if (currentUid == 0) {
// The directory somehow became owned by root. Wow.
// This is probably because the system was stopped while
// installd was in the middle of messing with its libs
// directory. Ask installd to fix that.
int ret = mInstaller.fixUid(pkgName, pkg.applicationInfo.uid,
pkg.applicationInfo.uid);
if (ret >= 0) {
recovered = true;
String msg = "Package " + pkg.packageName
+ " unexpectedly changed to uid 0; recovered to " +
+ pkg.applicationInfo.uid;
reportSettingsProblem(Log.WARN, msg);
}
}
if (!recovered && ((parseFlags&PackageParser.PARSE_IS_SYSTEM) != 0
|| (scanFlags&SCAN_BOOTING) != 0)) {
// If this is a system app, we can at least delete its
// current data so the application will still work.
int ret = removeDataDirsLI(pkgName);
if (ret >= 0) {
// TODO: Kill the processes first
// Old data gone!
String prefix = (parseFlags&PackageParser.PARSE_IS_SYSTEM) != 0
? "System package " : "Third party package ";
String msg = prefix + pkg.packageName
+ " has changed from uid: "
+ currentUid + " to "
+ pkg.applicationInfo.uid + "; old data erased";
reportSettingsProblem(Log.WARN, msg);
recovered = true;
// And now re-install the app.
ret = createDataDirsLI(pkgName, pkg.applicationInfo.uid,
pkg.applicationInfo.seinfo);
if (ret == -1) {
// Ack should not happen!
msg = prefix + pkg.packageName
+ " could not have data directory re-created after delete.";
reportSettingsProblem(Log.WARN, msg);
throw new PackageManagerException(
INSTALL_FAILED_INSUFFICIENT_STORAGE, msg);
}
}
if (!recovered) {
mHasSystemUidErrors = true;
}
} else if (!recovered) {
// If we allow this install to proceed, we will be broken.
// Abort, abort!
throw new PackageManagerException(INSTALL_FAILED_UID_CHANGED,
"scanPackageLI");
}
if (!recovered) {
pkg.applicationInfo.dataDir = "/mismatched_uid/settings_"
+ pkg.applicationInfo.uid + "/fs_"
+ currentUid;
pkg.applicationInfo.nativeLibraryDir = pkg.applicationInfo.dataDir;
pkg.applicationInfo.nativeLibraryRootDir = pkg.applicationInfo.dataDir;
String msg = "Package " + pkg.packageName
+ " has mismatched uid: "
+ currentUid + " on disk, "
+ pkg.applicationInfo.uid + " in settings";
// writer
synchronized (mPackages) {
mSettings.mReadMessages.append(msg);
mSettings.mReadMessages.append('\n');
uidError = true;
if (!pkgSetting.uidError) {
reportSettingsProblem(Log.ERROR, msg);
}
}
}
}
pkg.applicationInfo.dataDir = dataPath.getPath();
if (mShouldRestoreconData) {
Slog.i(TAG, "SELinux relabeling of " + pkg.packageName + " issued.");
mInstaller.restoreconData(pkg.packageName, pkg.applicationInfo.seinfo,
pkg.applicationInfo.uid);
}
} else {
if (DEBUG_PACKAGE_SCANNING) {
if ((parseFlags & PackageParser.PARSE_CHATTY) != 0)
Log.v(TAG, "Want this data dir: " + dataPath);
}
//invoke installer to do the actual installation
int ret = createDataDirsLI(pkgName, pkg.applicationInfo.uid,
pkg.applicationInfo.seinfo);
if (ret < 0) {
// Error from installer
throw new PackageManagerException(INSTALL_FAILED_INSUFFICIENT_STORAGE,
"Unable to create data dirs [errorCode=" + ret + "]");
}
if (dataPath.exists()) {
pkg.applicationInfo.dataDir = dataPath.getPath();
} else {
Slog.w(TAG, "Unable to create data directory: " + dataPath);
pkg.applicationInfo.dataDir = null;
}
}
pkgSetting.uidError = uidError;
}
final String path = scanFile.getPath();
final String codePath = pkg.applicationInfo.getCodePath();
final String cpuAbiOverride = deriveAbiOverride(pkg.cpuAbiOverride, pkgSetting);
if (isSystemApp(pkg) && !isUpdatedSystemApp(pkg)) {
setBundledAppAbisAndRoots(pkg, pkgSetting);
// If we haven't found any native libraries for the app, check if it has
// renderscript code. We'll need to force the app to 32 bit if it has
// renderscript bitcode.
if (pkg.applicationInfo.primaryCpuAbi == null
&& pkg.applicationInfo.secondaryCpuAbi == null
&& Build.SUPPORTED_64_BIT_ABIS.length > 0) {
NativeLibraryHelper.Handle handle = null;
try {
handle = NativeLibraryHelper.Handle.create(scanFile);
if (NativeLibraryHelper.hasRenderscriptBitcode(handle)) {
pkg.applicationInfo.primaryCpuAbi = Build.SUPPORTED_32_BIT_ABIS[0];
}
} catch (IOException ioe) {
Slog.w(TAG, "Error scanning system app : " + ioe);
} finally {
IoUtils.closeQuietly(handle);
}
}
setNativeLibraryPaths(pkg);
} else {
// TODO: We can probably be smarter about this stuff. For installed apps,
// we can calculate this information at install time once and for all. For
// system apps, we can probably assume that this information doesn't change
// after the first boot scan. As things stand, we do lots of unnecessary work.
// Give ourselves some initial paths; we'll come back for another
// pass once we've determined ABI below.
setNativeLibraryPaths(pkg);
final boolean isAsec = isForwardLocked(pkg) || isExternal(pkg);
final String nativeLibraryRootStr = pkg.applicationInfo.nativeLibraryRootDir;
final boolean useIsaSpecificSubdirs = pkg.applicationInfo.nativeLibraryRootRequiresIsa;
NativeLibraryHelper.Handle handle = null;
try {
handle = NativeLibraryHelper.Handle.create(scanFile);
// TODO(multiArch): This can be null for apps that didn't go through the
// usual installation process. We can calculate it again, like we
// do during install time.
//
// TODO(multiArch): Why do we need to rescan ASEC apps again ? It seems totally
// unnecessary.
final File nativeLibraryRoot = new File(nativeLibraryRootStr);
// Null out the abis so that they can be recalculated.
pkg.applicationInfo.primaryCpuAbi = null;
pkg.applicationInfo.secondaryCpuAbi = null;
if (isMultiArch(pkg.applicationInfo)) {
// Warn if we've set an abiOverride for multi-lib packages..
// By definition, we need to copy both 32 and 64 bit libraries for
// such packages.
if (pkg.cpuAbiOverride != null
&& !NativeLibraryHelper.CLEAR_ABI_OVERRIDE.equals(pkg.cpuAbiOverride)) {
Slog.w(TAG, "Ignoring abiOverride for multi arch application.");
}
int abi32 = PackageManager.NO_NATIVE_LIBRARIES;
int abi64 = PackageManager.NO_NATIVE_LIBRARIES;
if (Build.SUPPORTED_32_BIT_ABIS.length > 0) {
if (isAsec) {
abi32 = NativeLibraryHelper.findSupportedAbi(handle, Build.SUPPORTED_32_BIT_ABIS);
} else {
abi32 = NativeLibraryHelper.copyNativeBinariesForSupportedAbi(handle,
nativeLibraryRoot, Build.SUPPORTED_32_BIT_ABIS,
useIsaSpecificSubdirs);
}
}
maybeThrowExceptionForMultiArchCopy(
"Error unpackaging 32 bit native libs for multiarch app.", abi32);
if (Build.SUPPORTED_64_BIT_ABIS.length > 0) {
if (isAsec) {
abi64 = NativeLibraryHelper.findSupportedAbi(handle, Build.SUPPORTED_64_BIT_ABIS);
} else {
abi64 = NativeLibraryHelper.copyNativeBinariesForSupportedAbi(handle,
nativeLibraryRoot, Build.SUPPORTED_64_BIT_ABIS,
useIsaSpecificSubdirs);
}
}
maybeThrowExceptionForMultiArchCopy(
"Error unpackaging 64 bit native libs for multiarch app.", abi64);
if (abi64 >= 0) {
pkg.applicationInfo.primaryCpuAbi = Build.SUPPORTED_64_BIT_ABIS[abi64];
}
if (abi32 >= 0) {
final String abi = Build.SUPPORTED_32_BIT_ABIS[abi32];
if (abi64 >= 0) {
pkg.applicationInfo.secondaryCpuAbi = abi;
} else {
pkg.applicationInfo.primaryCpuAbi = abi;
}
}
} else {
String[] abiList = (cpuAbiOverride != null) ?
new String[] { cpuAbiOverride } : Build.SUPPORTED_ABIS;
// Enable gross and lame hacks for apps that are built with old
// SDK tools. We must scan their APKs for renderscript bitcode and
// not launch them if it's present. Don't bother checking on devices
// that don't have 64 bit support.
boolean needsRenderScriptOverride = false;
if (Build.SUPPORTED_64_BIT_ABIS.length > 0 && cpuAbiOverride == null &&
NativeLibraryHelper.hasRenderscriptBitcode(handle)) {
abiList = Build.SUPPORTED_32_BIT_ABIS;
needsRenderScriptOverride = true;
}
final int copyRet;
if (isAsec) {
copyRet = NativeLibraryHelper.findSupportedAbi(handle, abiList);
} else {
copyRet = NativeLibraryHelper.copyNativeBinariesForSupportedAbi(handle,
nativeLibraryRoot, abiList, useIsaSpecificSubdirs);
}
if (copyRet < 0 && copyRet != PackageManager.NO_NATIVE_LIBRARIES) {
throw new PackageManagerException(INSTALL_FAILED_INTERNAL_ERROR,
"Error unpackaging native libs for app, errorCode=" + copyRet);
}
if (copyRet >= 0) {
pkg.applicationInfo.primaryCpuAbi = abiList[copyRet];
} else if (copyRet == PackageManager.NO_NATIVE_LIBRARIES && cpuAbiOverride != null) {
pkg.applicationInfo.primaryCpuAbi = cpuAbiOverride;
} else if (needsRenderScriptOverride) {
pkg.applicationInfo.primaryCpuAbi = abiList[0];
} else if (copyRet == PackageManager.NO_NATIVE_LIBRARIES && Build.SUPPORTED_64_BIT_ABIS.length > 0) {
/// M: Use ArchHelper to verify if the package has other libraries within assets,
/// which may cause crash with wrongly setup the primary abi to 64bit
String apkPath = pkg.applicationInfo.getBaseCodePath();
Slog.d(TAG, "Double check libs within assets, apk file is " + apkPath);
ArchHelper archHelper = new ArchHelper(apkPath);
int assetArch = archHelper.findSupportedArch();
Slog.d(TAG, "libs arch is " + assetArch);
if (assetArch == ArchHelper.ARCH_ARM) {
Slog.i(TAG, "Force primary CPU ABI to 32 bit");
pkg.applicationInfo.primaryCpuAbi = Build.SUPPORTED_32_BIT_ABIS[0];
} else if (assetArch == ArchHelper.ARCH_MULTI) {
Slog.i(TAG, "Package has both 32 & 64 bit libs, keep with system default");
}
}
}
} catch (IOException ioe) {
Slog.e(TAG, "Unable to get canonical file " + ioe.toString());
} finally {
IoUtils.closeQuietly(handle);
}
// Now that we've calculated the ABIs and determined if it's an internal app,
// we will go ahead and populate the nativeLibraryPath.
setNativeLibraryPaths(pkg);
if (DEBUG_INSTALL) Slog.i(TAG, "Linking native library dir for " + path);
final int[] userIds = sUserManager.getUserIds();
synchronized (mInstallLock) {
// Create a native library symlink only if we have native libraries
// and if the native libraries are 32 bit libraries. We do not provide
// this symlink for 64 bit libraries.
if (pkg.applicationInfo.primaryCpuAbi != null &&
!VMRuntime.is64BitAbi(pkg.applicationInfo.primaryCpuAbi)) {
final String nativeLibPath = pkg.applicationInfo.nativeLibraryDir;
for (int userId : userIds) {
if (mInstaller.linkNativeLibraryDirectory(pkg.packageName, nativeLibPath, userId) < 0) {
throw new PackageManagerException(INSTALL_FAILED_INTERNAL_ERROR,
"Failed linking native library dir (user=" + userId + ")");
}
}
}
}
}
// This is a special case for the "system" package, where the ABI is
// dictated by the zygote configuration (and init.rc). We should keep track
// of this ABI so that we can deal with "normal" applications that run under
// the same UID correctly.
if (mPlatformPackage == pkg) {
pkg.applicationInfo.primaryCpuAbi = VMRuntime.getRuntime().is64Bit() ?
Build.SUPPORTED_64_BIT_ABIS[0] : Build.SUPPORTED_32_BIT_ABIS[0];
}
pkgSetting.primaryCpuAbiString = pkg.applicationInfo.primaryCpuAbi;
pkgSetting.secondaryCpuAbiString = pkg.applicationInfo.secondaryCpuAbi;
pkgSetting.cpuAbiOverrideString = cpuAbiOverride;
// Copy the derived override back to the parsed package, so that we can
// update the package settings accordingly.
pkg.cpuAbiOverride = cpuAbiOverride;
if (DEBUG_ABI_SELECTION) {
Slog.d(TAG, "Resolved nativeLibraryRoot for " + pkg.applicationInfo.packageName
+ " to root=" + pkg.applicationInfo.nativeLibraryRootDir + ", isa="
+ pkg.applicationInfo.nativeLibraryRootRequiresIsa);
}
// Push the derived path down into PackageSettings so we know what to
// clean up at uninstall time.
pkgSetting.legacyNativeLibraryPathString = pkg.applicationInfo.nativeLibraryRootDir;
if (DEBUG_ABI_SELECTION) {
Slog.d(TAG, "Abis for package[" + pkg.packageName + "] are" +
" primary=" + pkg.applicationInfo.primaryCpuAbi +
" secondary=" + pkg.applicationInfo.secondaryCpuAbi);
}
if ((scanFlags&SCAN_BOOTING) == 0 && pkgSetting.sharedUser != null) {
// We don't do this here during boot because we can do it all
// at once after scanning all existing packages.
//
// We also do this *before* we perform dexopt on this package, so that
// we can avoid redundant dexopts, and also to make sure we've got the
// code and package path correct.
adjustCpuAbisForSharedUserLPw(pkgSetting.sharedUser.packages,
pkg, forceDex, (scanFlags & SCAN_DEFER_DEX) != 0);
}
if ((scanFlags & SCAN_NO_DEX) == 0) {
Slog.i(TAG, "Perform pre-dex opt for package: " + pkg.packageName);
if (performDexOptLI(pkg, null /* instruction sets */, forceDex,
(scanFlags & SCAN_DEFER_DEX) != 0, false) == DEX_OPT_FAILED) {
throw new PackageManagerException(INSTALL_FAILED_DEXOPT, "scanPackageLI");
}
}
if (mFactoryTest && pkg.requestedPermissions.contains(
android.Manifest.permission.FACTORY_TEST)) {
pkg.applicationInfo.flags |= ApplicationInfo.FLAG_FACTORY_TEST;
}
ArrayList<PackageParser.Package> clientLibPkgs = null;
// writer
synchronized (mPackages) {
if ((pkg.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM) != 0) {
// Only system apps can add new shared libraries.
if (pkg.libraryNames != null) {
for (int i=0; i<pkg.libraryNames.size(); i++) {
String name = pkg.libraryNames.get(i);
boolean allowed = false;
if (isUpdatedSystemApp(pkg)) {
// New library entries can only be added through the
// system image. This is important to get rid of a lot
// of nasty edge cases: for example if we allowed a non-
// system update of the app to add a library, then uninstalling
// the update would make the library go away, and assumptions
// we made such as through app install filtering would now
// have allowed apps on the device which aren't compatible
// with it. Better to just have the restriction here, be
// conservative, and create many fewer cases that can negatively
// impact the user experience.
final PackageSetting sysPs = mSettings
.getDisabledSystemPkgLPr(pkg.packageName);
if (sysPs.pkg != null && sysPs.pkg.libraryNames != null) {
for (int j=0; j<sysPs.pkg.libraryNames.size(); j++) {
if (name.equals(sysPs.pkg.libraryNames.get(j))) {
allowed = true;
allowed = true;
break;
}
}
}
} else {
allowed = true;
}
if (allowed) {
if (!mSharedLibraries.containsKey(name)) {
mSharedLibraries.put(name, new SharedLibraryEntry(null, pkg.packageName));
} else if (!name.equals(pkg.packageName)) {
Slog.w(TAG, "Package " + pkg.packageName + " library "
+ name + " already exists; skipping");
}
} else {
Slog.w(TAG, "Package " + pkg.packageName + " declares lib "
+ name + " that is not declared on system image; skipping");
}
}
if ((scanFlags&SCAN_BOOTING) == 0) {
// If we are not booting, we need to update any applications
// that are clients of our shared library. If we are booting,
// this will all be done once the scan is complete.
clientLibPkgs = updateAllSharedLibrariesLPw(pkg);
}
}
}
}
// We also need to dexopt any apps that are dependent on this library. Note that
// if these fail, we should abort the install since installing the library will
// result in some apps being broken.
if (clientLibPkgs != null) {
if ((scanFlags & SCAN_NO_DEX) == 0) {
for (int i = 0; i < clientLibPkgs.size(); i++) {
PackageParser.Package clientPkg = clientLibPkgs.get(i);
if (performDexOptLI(clientPkg, null /* instruction sets */, forceDex,
(scanFlags & SCAN_DEFER_DEX) != 0, false) == DEX_OPT_FAILED) {
throw new PackageManagerException(INSTALL_FAILED_DEXOPT,
"scanPackageLI failed to dexopt clientLibPkgs");
}
}
}
}
// Request the ActivityManager to kill the process(only for existing packages)
// so that we do not end up in a confused state while the user is still using the older
// version of the application while the new one gets installed.
if ((scanFlags & SCAN_REPLACING) != 0) {
killApplication(pkg.applicationInfo.packageName,
pkg.applicationInfo.uid, "update pkg");
}
// Also need to kill any apps that are dependent on the library.
if (clientLibPkgs != null) {
for (int i=0; i<clientLibPkgs.size(); i++) {
PackageParser.Package clientPkg = clientLibPkgs.get(i);
killApplication(clientPkg.applicationInfo.packageName,
clientPkg.applicationInfo.uid, "update lib");
}
}
// writer
synchronized (mPackages) {
// We don't expect installation to fail beyond this point
// Add the new setting to mSettings
mSettings.insertPackageSettingLPw(pkgSetting, pkg);
// Add the new setting to mPackages
mPackages.put(pkg.applicationInfo.packageName, pkg);
// Make sure we don't accidentally delete its data.
final Iterator<PackageCleanItem> iter = mSettings.mPackagesToBeCleaned.iterator();
while (iter.hasNext()) {
PackageCleanItem item = iter.next();
if (pkgName.equals(item.packageName)) {
iter.remove();
}
}
// Take care of first install / last update times.
if (currentTime != 0) {
if (pkgSetting.firstInstallTime == 0) {
pkgSetting.firstInstallTime = pkgSetting.lastUpdateTime = currentTime;
} else if ((scanFlags&SCAN_UPDATE_TIME) != 0) {
pkgSetting.lastUpdateTime = currentTime;
}
} else if (pkgSetting.firstInstallTime == 0) {
// We need *something*. Take time time stamp of the file.
pkgSetting.firstInstallTime = pkgSetting.lastUpdateTime = scanFileTime;
} else if ((parseFlags&PackageParser.PARSE_IS_SYSTEM_DIR) != 0) {
if (scanFileTime != pkgSetting.timeStamp) {
// A package on the system image has changed; consider this
// to be an update.
pkgSetting.lastUpdateTime = scanFileTime;
}
}
// Add the package's KeySets to the global KeySetManagerService
KeySetManagerService ksms = mSettings.mKeySetManagerService;
try {
// Old KeySetData no longer valid.
ksms.removeAppKeySetDataLPw(pkg.packageName);
ksms.addSigningKeySetToPackageLPw(pkg.packageName, pkg.mSigningKeys);
if (pkg.mKeySetMapping != null) {
for (Map.Entry<String, ArraySet<PublicKey>> entry :
pkg.mKeySetMapping.entrySet()) {
if (entry.getValue() != null) {
ksms.addDefinedKeySetToPackageLPw(pkg.packageName,
entry.getValue(), entry.getKey());
}
}
if (pkg.mUpgradeKeySets != null) {
for (String upgradeAlias : pkg.mUpgradeKeySets) {
ksms.addUpgradeKeySetToPackageLPw(pkg.packageName, upgradeAlias);
}
}
}
} catch (NullPointerException e) {
Slog.e(TAG, "Could not add KeySet to " + pkg.packageName, e);
} catch (IllegalArgumentException e) {
Slog.e(TAG, "Could not add KeySet to malformed package" + pkg.packageName, e);
}
int N = pkg.providers.size();
StringBuilder r = null;
int i;
for (i=0; i<N; i++) {
PackageParser.Provider p = pkg.providers.get(i);
p.info.processName = fixProcessName(pkg.applicationInfo.processName,
p.info.processName, pkg.applicationInfo.uid);
mProviders.addProvider(p);
p.syncable = p.info.isSyncable;
if (p.info.authority != null) {
String names[] = p.info.authority.split(";");
p.info.authority = null;
for (int j = 0; j < names.length; j++) {
if (j == 1 && p.syncable) {
// We only want the first authority for a provider to possibly be
// syncable, so if we already added this provider using a different
// authority clear the syncable flag. We copy the provider before
// changing it because the mProviders object contains a reference
// to a provider that we don't want to change.
// Only do this for the second authority since the resulting provider
// object can be the same for all future authorities for this provider.
p = new PackageParser.Provider(p);
p.syncable = false;
}
if (!mProvidersByAuthority.containsKey(names[j])) {
mProvidersByAuthority.put(names[j], p);
if (p.info.authority == null) {
p.info.authority = names[j];
} else {
p.info.authority = p.info.authority + ";" + names[j];
}
if (DEBUG_PACKAGE_SCANNING) {
if ((parseFlags & PackageParser.PARSE_CHATTY) != 0)
Log.d(TAG, "Registered content provider: " + names[j]
+ ", className = " + p.info.name + ", isSyncable = "
+ p.info.isSyncable);
}
} else {
PackageParser.Provider other = mProvidersByAuthority.get(names[j]);
Slog.w(TAG, "Skipping provider name " + names[j] +
" (in package " + pkg.applicationInfo.packageName +
"): name already used by "
+ ((other != null && other.getComponentName() != null)
? other.getComponentName().getPackageName() : "?"));
}
}
}
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(p.info.name);
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Providers: " + r);
}
N = pkg.services.size();
r = null;
for (i=0; i<N; i++) {
PackageParser.Service s = pkg.services.get(i);
s.info.processName = fixProcessName(pkg.applicationInfo.processName,
s.info.processName, pkg.applicationInfo.uid);
mServices.addService(s);
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(s.info.name);
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Services: " + r);
}
N = pkg.receivers.size();
r = null;
for (i=0; i<N; i++) {
PackageParser.Activity a = pkg.receivers.get(i);
a.info.processName = fixProcessName(pkg.applicationInfo.processName,
a.info.processName, pkg.applicationInfo.uid);
mReceivers.addActivity(a, "receiver");
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(a.info.name);
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Receivers: " + r);
}
N = pkg.activities.size();
r = null;
for (i=0; i<N; i++) {
PackageParser.Activity a = pkg.activities.get(i);
a.info.processName = fixProcessName(pkg.applicationInfo.processName,
a.info.processName, pkg.applicationInfo.uid);
mActivities.addActivity(a, "activity");
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(a.info.name);
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Activities: " + r);
}
N = pkg.permissionGroups.size();
r = null;
for (i=0; i<N; i++) {
PackageParser.PermissionGroup pg = pkg.permissionGroups.get(i);
PackageParser.PermissionGroup cur = mPermissionGroups.get(pg.info.name);
if (cur == null) {
mPermissionGroups.put(pg.info.name, pg);
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(pg.info.name);
}
} else {
Slog.w(TAG, "Permission group " + pg.info.name + " from package "
+ pg.info.packageName + " ignored: original from "
+ cur.info.packageName);
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append("DUP:");
r.append(pg.info.name);
}
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Permission Groups: " + r);
}
N = pkg.permissions.size();
r = null;
for (i=0; i<N; i++) {
PackageParser.Permission p = pkg.permissions.get(i);
ArrayMap<String, BasePermission> permissionMap =
p.tree ? mSettings.mPermissionTrees
: mSettings.mPermissions;
p.group = mPermissionGroups.get(p.info.group);
if (p.info.group == null || p.group != null) {
BasePermission bp = permissionMap.get(p.info.name);
// Allow system apps to redefine non-system permissions
if (bp != null && !Objects.equals(bp.sourcePackage, p.info.packageName)) {
final boolean currentOwnerIsSystem = (bp.perm != null
&& isSystemApp(bp.perm.owner));
if (isSystemApp(p.owner)) {
if (bp.type == BasePermission.TYPE_BUILTIN && bp.perm == null) {
// It's a built-in permission and no owner, take ownership now
bp.packageSetting = pkgSetting;
bp.perm = p;
bp.uid = pkg.applicationInfo.uid;
bp.sourcePackage = p.info.packageName;
} else if (!currentOwnerIsSystem) {
String msg = "New decl " + p.owner + " of permission "
+ p.info.name + " is system; overriding " + bp.sourcePackage;
reportSettingsProblem(Log.WARN, msg);
bp = null;
}
}
}
if (bp == null) {
bp = new BasePermission(p.info.name, p.info.packageName,
BasePermission.TYPE_NORMAL);
permissionMap.put(p.info.name, bp);
}
if (bp.perm == null) {
if (bp.sourcePackage == null
|| bp.sourcePackage.equals(p.info.packageName)) {
BasePermission tree = findPermissionTreeLP(p.info.name);
if (tree == null
|| tree.sourcePackage.equals(p.info.packageName)) {
bp.packageSetting = pkgSetting;
bp.perm = p;
bp.uid = pkg.applicationInfo.uid;
bp.sourcePackage = p.info.packageName;
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(p.info.name);
}
} else {
Slog.w(TAG, "Permission " + p.info.name + " from package "
+ p.info.packageName + " ignored: base tree "
+ tree.name + " is from package "
+ tree.sourcePackage);
}
} else {
Slog.w(TAG, "Permission " + p.info.name + " from package "
+ p.info.packageName + " ignored: original from "
+ bp.sourcePackage);
}
} else if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append("DUP:");
r.append(p.info.name);
}
if (bp.perm == p) {
bp.protectionLevel = p.info.protectionLevel;
}
} else {
Slog.w(TAG, "Permission " + p.info.name + " from package "
+ p.info.packageName + " ignored: no group "
+ p.group);
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Permissions: " + r);
}
N = pkg.instrumentation.size();
r = null;
for (i=0; i<N; i++) {
PackageParser.Instrumentation a = pkg.instrumentation.get(i);
a.info.packageName = pkg.applicationInfo.packageName;
a.info.sourceDir = pkg.applicationInfo.sourceDir;
a.info.publicSourceDir = pkg.applicationInfo.publicSourceDir;
a.info.splitSourceDirs = pkg.applicationInfo.splitSourceDirs;
a.info.splitPublicSourceDirs = pkg.applicationInfo.splitPublicSourceDirs;
a.info.dataDir = pkg.applicationInfo.dataDir;
// TODO: Update instrumentation.nativeLibraryDir as well ? Does it
// need other information about the application, like the ABI and what not ?
a.info.nativeLibraryDir = pkg.applicationInfo.nativeLibraryDir;
mInstrumentation.put(a.getComponentName(), a);
if ((parseFlags&PackageParser.PARSE_CHATTY) != 0) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(a.info.name);
}
}
if (r != null) {
if (DEBUG_PACKAGE_SCANNING) Log.d(TAG, " Instrumentation: " + r);
}
if (pkg.protectedBroadcasts != null) {
N = pkg.protectedBroadcasts.size();
for (i=0; i<N; i++) {
mProtectedBroadcasts.add(pkg.protectedBroadcasts.get(i));
}
}
pkgSetting.setTimeStamp(scanFileTime);
// Create idmap files for pairs of (packages, overlay packages).
// Note: "android", ie framework-res.apk, is handled by native layers.
if (pkg.mOverlayTarget != null) {
// This is an overlay package.
if (pkg.mOverlayTarget != null && !pkg.mOverlayTarget.equals("android")) {
if (!mOverlays.containsKey(pkg.mOverlayTarget)) {
mOverlays.put(pkg.mOverlayTarget,
new ArrayMap<String, PackageParser.Package>());
}
ArrayMap<String, PackageParser.Package> map = mOverlays.get(pkg.mOverlayTarget);
map.put(pkg.packageName, pkg);
PackageParser.Package orig = mPackages.get(pkg.mOverlayTarget);
if (orig != null && !createIdmapForPackagePairLI(orig, pkg)) {
throw new PackageManagerException(INSTALL_FAILED_UPDATE_INCOMPATIBLE,
"scanPackageLI failed to createIdmap");
}
}
} else if (mOverlays.containsKey(pkg.packageName) &&
!pkg.packageName.equals("android")) {
// This is a regular package, with one or more known overlay packages.
createIdmapsForPackageLI(pkg);
}
}
return pkg;
}
這一部分的內容非常多，大體上看會對系統apk做一些設置，簽名驗證，Selinux安全策略的驗證，Provider的檢查，權限的檢查，apk詳細信息存儲更新設置等，在這個方法之後執行上面說過的updateSettingsLI
private void updateSettingsLI(PackageParser.Package newPackage, String installerPackageName,
int[] allUsers, boolean[] perUserInstalled,
PackageInstalledInfo res) {
String pkgName = newPackage.packageName;
synchronized (mPackages) {
//write settings. the installStatus will be incomplete at this stage.
//note that the new package setting would have already been
//added to mPackages. It hasn't been persisted yet.
mSettings.setInstallStatus(pkgName, PackageSettingBase.PKG_INSTALL_INCOMPLETE);
mSettings.writeLPr();
}
if (DEBUG_INSTALL) Slog.d(TAG, "New package installed in " + newPackage.codePath);
synchronized (mPackages) {
updatePermissionsLPw(newPackage.packageName, newPackage,
UPDATE_PERMISSIONS_REPLACE_PKG | (newPackage.permissions.size() > 0
? UPDATE_PERMISSIONS_ALL : 0));
// For system-bundled packages, we assume that installing an upgraded version
// of the package implies that the user actually wants to run that new code,
// so we enable the package.
if (isSystemApp(newPackage)) {
// NB: implicit assumption that system package upgrades apply to all users
if (DEBUG_INSTALL) {
Slog.d(TAG, "Implicitly enabling system package on upgrade: " + pkgName);
}
PackageSetting ps = mSettings.mPackages.get(pkgName);
if (ps != null) {
if (res.origUsers != null) {
for (int userHandle : res.origUsers) {
ps.setEnabled(COMPONENT_ENABLED_STATE_DEFAULT,
userHandle, installerPackageName);
}
}
// Also convey the prior install/uninstall state
if (allUsers != null && perUserInstalled != null) {
for (int i = 0; i < allUsers.length; i++) {
if (DEBUG_INSTALL) {
Slog.d(TAG, " user " + allUsers[i]
+ " => " + perUserInstalled[i]);
}
ps.setInstalled(perUserInstalled[i], allUsers[i]);
}
// these install state changes will be persisted in the
// upcoming call to mSettings.writeLPr().
}
}
}
res.name = pkgName;
res.uid = newPackage.applicationInfo.uid;
res.pkg = newPackage;
mSettings.setInstallStatus(pkgName, PackageSettingBase.PKG_INSTALL_COMPLETE);
mSettings.setInstallerPackageName(pkgName, installerPackageName);
res.returnCode = PackageManager.INSTALL_SUCCEEDED;
//to update install status
mSettings.writeLPr();
}
}
這個方法核心就是updatePermissionsLPw更新權限相關以及寫入PKG_INSTALL_COMPLETE和INSTALL_SUCCEEDED，最終會進入processPendingInstall()中得備份流程調用mPackageManagerBinder.finishPackageInstall(token)完成整個apk得安裝