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Fix mDeviceOwnerUserId locking and annotation

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The following methods were mismarked as requiring the mRestrictionsLock
in commit I1f1f024199db85d4023323169441c8514ea3cc3a. The reason was because mDeviceOwnerUserId requires that lock and it wasn't always being acquired. The correct solution is to acquire that lock. The mismarked annotations can then be removed; they weren't ever obeyed anyway.

Bug: 226607885
Test: atest UserManagerServiceTest
Change-Id: I7df5dde12e5f28ed7cd9b648aad9a5373ab4d097
This commit is contained in:
Adam Bookatz
2022-05-02 11:02:54 -07:00
parent a730b1041a
commit 107757dd7f
1 changed files with 16 additions and 9 deletions
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25
services/core/java/com/android/server/pm/UserManagerService.java
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@@ -291,6 +291,7 @@ public class UserManagerService extends IUserManager.Stub {
private final Handler mHandler;
private final File mUsersDir;
@GuardedBy("mPackagesLock")
private final File mUserListFile;
private static final IBinder mUserRestriconToken = new Binder();
@@ -3016,7 +3017,7 @@ public class UserManagerService extends IUserManager.Stub {
mUpdatingSystemUserMode = true;
}
@GuardedBy({"mRestrictionsLock", "mPackagesLock"})
@GuardedBy({"mPackagesLock"})
private void readUserListLP() {
if (!mUserListFile.exists()) {
fallbackToSingleUserLP();
@@ -3084,8 +3085,10 @@ public class UserManagerService extends IUserManager.Stub {
} else if (name.equals(TAG_DEVICE_OWNER_USER_ID)
// Legacy name, should only be encountered when upgrading from pre-O.
|| name.equals(TAG_GLOBAL_RESTRICTION_OWNER_ID)) {
mDeviceOwnerUserId =
parser.getAttributeInt(null, ATTR_ID, mDeviceOwnerUserId);
synchronized (mRestrictionsLock) {
mDeviceOwnerUserId =
parser.getAttributeInt(null, ATTR_ID, mDeviceOwnerUserId);
}
} else if (name.equals(TAG_DEVICE_POLICY_RESTRICTIONS)) {
// Should only happen when upgrading from pre-O (version < 7).
oldDevicePolicyGlobalUserRestrictions =
@@ -3107,7 +3110,7 @@ public class UserManagerService extends IUserManager.Stub {
* Upgrade steps between versions, either for fixing bugs or changing the data format.
* @param oldGlobalUserRestrictions Pre-O global device policy restrictions.
*/
@GuardedBy({"mRestrictionsLock", "mPackagesLock"})
@GuardedBy({"mPackagesLock"})
private void upgradeIfNecessaryLP(Bundle oldGlobalUserRestrictions) {
upgradeIfNecessaryLP(oldGlobalUserRestrictions, mUserVersion, mUserTypeVersion);
}
@@ -3116,7 +3119,7 @@ public class UserManagerService extends IUserManager.Stub {
* Version of {@link #upgradeIfNecessaryLP(Bundle)} that takes in the userVersion for testing
* purposes. For non-tests, use {@link #upgradeIfNecessaryLP(Bundle)}.
*/
@GuardedBy({"mRestrictionsLock", "mPackagesLock"})
@GuardedBy({"mPackagesLock"})
@VisibleForTesting
void upgradeIfNecessaryLP(Bundle oldGlobalUserRestrictions, int userVersion,
int userTypeVersion) {
@@ -3377,7 +3380,7 @@ public class UserManagerService extends IUserManager.Stub {
userInfo.profileBadge = getFreeProfileBadgeLU(userInfo.profileGroupId, userInfo.userType);
}
@GuardedBy({"mPackagesLock", "mRestrictionsLock"})
@GuardedBy({"mPackagesLock"})
private void fallbackToSingleUserLP() {
int flags = UserInfo.FLAG_SYSTEM | UserInfo.FLAG_INITIALIZED | UserInfo.FLAG_ADMIN
| UserInfo.FLAG_PRIMARY;
@@ -3582,7 +3585,7 @@ public class UserManagerService extends IUserManager.Stub {
* <user id="2"></user>
* </users>
*/
@GuardedBy({"mRestrictionsLock", "mPackagesLock"})
@GuardedBy({"mPackagesLock"})
private void writeUserListLP() {
if (DBG) {
debug("writeUserList");
@@ -3607,7 +3610,9 @@ public class UserManagerService extends IUserManager.Stub {
}
serializer.endTag(null, TAG_GUEST_RESTRICTIONS);
serializer.startTag(null, TAG_DEVICE_OWNER_USER_ID);
serializer.attributeInt(null, ATTR_ID, mDeviceOwnerUserId);
synchronized (mRestrictionsLock) {
serializer.attributeInt(null, ATTR_ID, mDeviceOwnerUserId);
}
serializer.endTag(null, TAG_DEVICE_OWNER_USER_ID);
int[] userIdsToWrite;
synchronized (mUsersLock) {
@@ -5935,7 +5940,9 @@ public class UserManagerService extends IUserManager.Stub {
pw.println();
pw.println("Device properties:");
pw.println(" Device owner id:" + mDeviceOwnerUserId);
synchronized (mRestrictionsLock) {
pw.println(" Device owner id:" + mDeviceOwnerUserId);
}
pw.println();
pw.println(" Guest restrictions:");
synchronized (mGuestRestrictions) {