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-rw-r--r--packages/SettingsProvider/src/com/android/providers/settings/SettingsState.java40
-rw-r--r--packages/SettingsProvider/test/src/com/android/providers/settings/SettingsStateTest.java94
2 files changed, 120 insertions, 14 deletions
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsState.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsState.java
index 528af2ec2528..cd667ca05f61 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsState.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsState.java
@@ -48,6 +48,7 @@ import android.util.Xml;
import android.util.proto.ProtoOutputStream;
import com.android.internal.annotations.GuardedBy;
+import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.util.ArrayUtils;
import com.android.internal.util.FrameworkStatsLog;
@@ -376,8 +377,8 @@ final class SettingsState {
Setting newSetting = new Setting(name, oldSetting.getValue(), null,
oldSetting.getPackageName(), oldSetting.getTag(), false,
oldSetting.getId());
- int newSize = getNewMemoryUsagePerPackageLocked(newSetting.getPackageName(), oldValue,
- newSetting.getValue(), oldDefaultValue, newSetting.getDefaultValue());
+ int newSize = getNewMemoryUsagePerPackageLocked(newSetting.getPackageName(), 0,
+ oldValue, newSetting.getValue(), oldDefaultValue, newSetting.getDefaultValue());
checkNewMemoryUsagePerPackageLocked(newSetting.getPackageName(), newSize);
mSettings.put(name, newSetting);
updateMemoryUsagePerPackageLocked(newSetting.getPackageName(), newSize);
@@ -414,8 +415,9 @@ final class SettingsState {
String oldDefaultValue = (oldState != null) ? oldState.defaultValue : null;
String newDefaultValue = makeDefault ? value : oldDefaultValue;
- int newSize = getNewMemoryUsagePerPackageLocked(packageName, oldValue, value,
- oldDefaultValue, newDefaultValue);
+ int newSize = getNewMemoryUsagePerPackageLocked(packageName,
+ oldValue == null ? name.length() : 0 /* deltaKeySize */,
+ oldValue, value, oldDefaultValue, newDefaultValue);
checkNewMemoryUsagePerPackageLocked(packageName, newSize);
Setting newState;
@@ -559,8 +561,12 @@ final class SettingsState {
}
Setting oldState = mSettings.remove(name);
- int newSize = getNewMemoryUsagePerPackageLocked(oldState.packageName, oldState.value,
- null, oldState.defaultValue, null);
+ if (oldState == null) {
+ return false;
+ }
+ int newSize = getNewMemoryUsagePerPackageLocked(oldState.packageName,
+ -name.length() /* deltaKeySize */,
+ oldState.value, null, oldState.defaultValue, null);
FrameworkStatsLog.write(FrameworkStatsLog.SETTING_CHANGED, name, /* value= */ "",
/* newValue= */ "", oldState.value, /* tag */ "", false, getUserIdFromKey(mKey),
@@ -583,15 +589,16 @@ final class SettingsState {
}
Setting setting = mSettings.get(name);
+ if (setting == null) {
+ return false;
+ }
Setting oldSetting = new Setting(setting);
String oldValue = setting.getValue();
String oldDefaultValue = setting.getDefaultValue();
- String newValue = oldDefaultValue;
- String newDefaultValue = oldDefaultValue;
- int newSize = getNewMemoryUsagePerPackageLocked(setting.packageName, oldValue,
- newValue, oldDefaultValue, newDefaultValue);
+ int newSize = getNewMemoryUsagePerPackageLocked(setting.packageName, 0, oldValue,
+ oldDefaultValue, oldDefaultValue, oldDefaultValue);
checkNewMemoryUsagePerPackageLocked(setting.packageName, newSize);
if (!setting.reset()) {
@@ -725,8 +732,8 @@ final class SettingsState {
}
@GuardedBy("mLock")
- private int getNewMemoryUsagePerPackageLocked(String packageName, String oldValue,
- String newValue, String oldDefaultValue, String newDefaultValue) {
+ private int getNewMemoryUsagePerPackageLocked(String packageName, int deltaKeySize,
+ String oldValue, String newValue, String oldDefaultValue, String newDefaultValue) {
if (isExemptFromMemoryUsageCap(packageName)) {
return 0;
}
@@ -735,7 +742,7 @@ final class SettingsState {
final int newValueSize = (newValue != null) ? newValue.length() : 0;
final int oldDefaultValueSize = (oldDefaultValue != null) ? oldDefaultValue.length() : 0;
final int newDefaultValueSize = (newDefaultValue != null) ? newDefaultValue.length() : 0;
- final int deltaSize = newValueSize + newDefaultValueSize
+ final int deltaSize = deltaKeySize + newValueSize + newDefaultValueSize
- oldValueSize - oldDefaultValueSize;
return Math.max((currentSize != null) ? currentSize + deltaSize : deltaSize, 0);
}
@@ -1577,4 +1584,11 @@ final class SettingsState {
}
return false;
}
+
+ @VisibleForTesting
+ public int getMemoryUsage(String packageName) {
+ synchronized (mLock) {
+ return mPackageToMemoryUsage.getOrDefault(packageName, 0);
+ }
+ }
}
diff --git a/packages/SettingsProvider/test/src/com/android/providers/settings/SettingsStateTest.java b/packages/SettingsProvider/test/src/com/android/providers/settings/SettingsStateTest.java
index 66b809aeae30..f6d43292eafe 100644
--- a/packages/SettingsProvider/test/src/com/android/providers/settings/SettingsStateTest.java
+++ b/packages/SettingsProvider/test/src/com/android/providers/settings/SettingsStateTest.java
@@ -295,7 +295,7 @@ public class SettingsStateTest extends AndroidTestCase {
settingsState.deleteSettingLocked(SETTING_NAME);
// Should not throw if usage is under the cap
- settingsState.insertSettingLocked(SETTING_NAME, Strings.repeat("A", 19999),
+ settingsState.insertSettingLocked(SETTING_NAME, Strings.repeat("A", 19975),
null, false, "p1");
settingsState.deleteSettingLocked(SETTING_NAME);
try {
@@ -313,5 +313,97 @@ public class SettingsStateTest extends AndroidTestCase {
assertTrue(ex.getMessage().contains("p1"));
}
assertTrue(settingsState.getSettingLocked(SETTING_NAME).isNull());
+ try {
+ settingsState.insertSettingLocked(Strings.repeat("A", 20001), "",
+ null, false, "p1");
+ fail("Should throw because it exceeded per package memory usage");
+ } catch (IllegalStateException ex) {
+ assertTrue(ex.getMessage().contains("You are adding too many system settings"));
+ }
+ }
+
+ public void testMemoryUsagePerPackage() {
+ SettingsState settingsState = new SettingsState(getContext(), mLock, mSettingsFile, 1,
+ SettingsState.MAX_BYTES_PER_APP_PACKAGE_LIMITED, Looper.getMainLooper());
+
+ // Test inserting one key with default
+ final String testKey1 = SETTING_NAME;
+ final String testValue1 = Strings.repeat("A", 100);
+ settingsState.insertSettingLocked(testKey1, testValue1, null, true, TEST_PACKAGE);
+ int expectedMemUsage = testKey1.length() + testValue1.length()
+ + testValue1.length() /* size for default */;
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test inserting another key
+ final String testKey2 = SETTING_NAME + "2";
+ settingsState.insertSettingLocked(testKey2, testValue1, null, false, TEST_PACKAGE);
+ expectedMemUsage += testKey2.length() + testValue1.length();
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test updating first key with new default
+ final String testValue2 = Strings.repeat("A", 300);
+ settingsState.insertSettingLocked(testKey1, testValue2, null, true, TEST_PACKAGE);
+ expectedMemUsage += (testValue2.length() - testValue1.length()) * 2;
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test updating first key without new default
+ final String testValue3 = Strings.repeat("A", 50);
+ settingsState.insertSettingLocked(testKey1, testValue3, null, false, TEST_PACKAGE);
+ expectedMemUsage -= testValue2.length() - testValue3.length();
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test updating second key
+ settingsState.insertSettingLocked(testKey2, testValue2, null, false, TEST_PACKAGE);
+ expectedMemUsage -= testValue1.length() - testValue2.length();
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test resetting key
+ settingsState.resetSettingLocked(testKey1);
+ expectedMemUsage += testValue2.length() - testValue3.length();
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test resetting default value
+ settingsState.resetSettingDefaultValueLocked(testKey1);
+ expectedMemUsage -= testValue2.length();
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test deletion
+ settingsState.deleteSettingLocked(testKey2);
+ expectedMemUsage -= testValue2.length() + testKey2.length() /* key is deleted too */;
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test another package with a different key
+ final String testPackage2 = TEST_PACKAGE + "2";
+ final String testKey3 = SETTING_NAME + "3";
+ settingsState.insertSettingLocked(testKey3, testValue1, null, true, testPackage2);
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+ final int expectedMemUsage2 = testKey3.length() + testValue1.length() * 2;
+ assertEquals(expectedMemUsage2, settingsState.getMemoryUsage(testPackage2));
+
+ // Test system package
+ settingsState.insertSettingLocked(testKey1, testValue1, null, true, SYSTEM_PACKAGE);
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+ assertEquals(expectedMemUsage2, settingsState.getMemoryUsage(testPackage2));
+ assertEquals(0, settingsState.getMemoryUsage(SYSTEM_PACKAGE));
+
+ // Test invalid value
+ try {
+ settingsState.insertSettingLocked(testKey1, Strings.repeat("A", 20001), null, false,
+ TEST_PACKAGE);
+ fail("Should throw because it exceeded per package memory usage");
+ } catch (IllegalStateException ex) {
+ assertTrue(ex.getMessage().contains("You are adding too many system settings"));
+ }
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
+
+ // Test invalid key
+ try {
+ settingsState.insertSettingLocked(Strings.repeat("A", 20001), "", null, false,
+ TEST_PACKAGE);
+ fail("Should throw because it exceeded per package memory usage");
+ } catch (IllegalStateException ex) {
+ assertTrue(ex.getMessage().contains("You are adding too many system settings"));
+ }
+ assertEquals(expectedMemUsage, settingsState.getMemoryUsage(TEST_PACKAGE));
}
}
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-30 05:36:36 +0000