Merge "Revert^2 "Utils required for CrashRecovery module"" into main (d5e36cdf) · Commits · e / os / android_frameworks_base

packages/CrashRecovery/services/java/com/android/server/PackageWatchdog.java

+3 −3

Original line number	Diff line number	Diff line
		@@ -39,15 +39,15 @@ import android.text.TextUtils;
		import android.util.ArrayMap;
		import android.util.ArraySet;
		import android.util.AtomicFile;
		import android.util.BackgroundThread;
		import android.util.LongArrayQueue;
		import android.util.Slog;
		import android.util.Xml;
		import android.utils.BackgroundThread;
		import android.utils.LongArrayQueue;
		import android.utils.XmlUtils;

		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.util.IndentingPrintWriter;
		import com.android.internal.util.XmlUtils;
		import com.android.modules.utils.TypedXmlPullParser;
		import com.android.modules.utils.TypedXmlSerializer;

packages/CrashRecovery/services/java/com/android/server/RescueParty.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -31,7 +31,6 @@ import android.content.pm.VersionedPackage;
		import android.crashrecovery.flags.Flags;
		import android.os.Build;
		import android.os.Environment;
		import android.os.FileUtils;
		import android.os.PowerManager;
		import android.os.RecoverySystem;
		import android.os.SystemClock;
		@@ -44,10 +43,11 @@ import android.text.TextUtils;
		import android.util.ArraySet;
		import android.util.Log;
		import android.util.Slog;
		import android.utils.ArrayUtils;
		import android.utils.FileUtils;

		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.util.ArrayUtils;
		import com.android.server.PackageWatchdog.FailureReasons;
		import com.android.server.PackageWatchdog.PackageHealthObserver;
		import com.android.server.PackageWatchdog.PackageHealthObserverImpact;

packages/CrashRecovery/services/java/com/android/utils/ArrayUtils.java

0 → 100644

+115 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2024 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.utils;

		import android.annotation.NonNull;
		import android.annotation.Nullable;

		import java.io.File;
		import java.util.List;
		import java.util.Objects;

		/**
		* Copied over from frameworks/base/core/java/com/android/internal/util/ArrayUtils.java
		*
		* @hide
		*/
		public class ArrayUtils {
		private ArrayUtils() { /* cannot be instantiated */ }
		public static final File[] EMPTY_FILE = new File[0];


		/**
		* Return first index of {@code value} in {@code array}, or {@code -1} if
		* not found.
		*/
		public static <T> int indexOf(@Nullable T[] array, T value) {
		if (array == null) return -1;
		for (int i = 0; i < array.length; i++) {
		if (Objects.equals(array[i], value)) return i;
		}
		return -1;
		}

		/** @hide */
		public static @NonNull File[] defeatNullable(@Nullable File[] val) {
		return (val != null) ? val : EMPTY_FILE;
		}

		/**
		* Checks if given array is null or has zero elements.
		*/
		public static boolean isEmpty(@Nullable int[] array) {
		return array == null \|\| array.length == 0;
		}

		/**
		* True if the byte array is null or has length 0.
		*/
		public static boolean isEmpty(@Nullable byte[] array) {
		return array == null \|\| array.length == 0;
		}

		/**
		* Converts from List of bytes to byte array
		* @param list
		* @return byte[]
		*/
		public static byte[] toPrimitive(List<byte[]> list) {
		if (list.size() == 0) {
		return new byte[0];
		}
		int byteLen = list.get(0).length;
		byte[] array = new byte[list.size() * byteLen];
		for (int i = 0; i < list.size(); i++) {
		for (int j = 0; j < list.get(i).length; j++) {
		array[i * byteLen + j] = list.get(i)[j];
		}
		}
		return array;
		}

		/**
		* Adds value to given array if not already present, providing set-like
		* behavior.
		*/
		public static @NonNull int[] appendInt(@Nullable int[] cur, int val) {
		return appendInt(cur, val, false);
		}

		/**
		* Adds value to given array.
		*/
		public static @NonNull int[] appendInt(@Nullable int[] cur, int val,
		boolean allowDuplicates) {
		if (cur == null) {
		return new int[] { val };
		}
		final int n = cur.length;
		if (!allowDuplicates) {
		for (int i = 0; i < n; i++) {
		if (cur[i] == val) {
		return cur;
		}
		}
		}
		int[] ret = new int[n + 1];
		System.arraycopy(cur, 0, ret, 0, n);
		ret[n] = val;
		return ret;
		}
		}

packages/CrashRecovery/services/java/com/android/util/BackgroundThread.java→packages/CrashRecovery/services/java/com/android/utils/BackgroundThread.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -14,7 +14,7 @@
		* limitations under the License.
		*/

		package android.util;
		package android.utils;

		import android.annotation.NonNull;
		import android.os.Handler;

packages/CrashRecovery/services/java/com/android/utils/FileUtils.java

0 → 100644

+128 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2024 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.utils;

		import android.annotation.NonNull;
		import android.annotation.Nullable;

		import java.io.BufferedInputStream;
		import java.io.ByteArrayOutputStream;
		import java.io.File;
		import java.io.FileInputStream;
		import java.io.FileOutputStream;
		import java.io.IOException;
		import java.io.InputStream;

		/**
		* Bits and pieces copied from hidden API of android.os.FileUtils.
		*
		* @hide
		*/
		public class FileUtils {
		/**
		* Read a text file into a String, optionally limiting the length.
		*
		* @param file to read (will not seek, so things like /proc files are OK)
		* @param max length (positive for head, negative of tail, 0 for no limit)
		* @param ellipsis to add of the file was truncated (can be null)
		* @return the contents of the file, possibly truncated
		* @throws IOException if something goes wrong reading the file
		* @hide
		*/
		public static @Nullable String readTextFile(@Nullable File file, @Nullable int max,
		@Nullable String ellipsis) throws IOException {
		InputStream input = new FileInputStream(file);
		// wrapping a BufferedInputStream around it because when reading /proc with unbuffered
		// input stream, bytes read not equal to buffer size is not necessarily the correct
		// indication for EOF; but it is true for BufferedInputStream due to its implementation.
		BufferedInputStream bis = new BufferedInputStream(input);
		try {
		long size = file.length();
		if (max > 0 \|\| (size > 0 && max == 0)) { // "head" mode: read the first N bytes
		if (size > 0 && (max == 0 \|\| size < max)) max = (int) size;
		byte[] data = new byte[max + 1];
		int length = bis.read(data);
		if (length <= 0) return "";
		if (length <= max) return new String(data, 0, length);
		if (ellipsis == null) return new String(data, 0, max);
		return new String(data, 0, max) + ellipsis;
		} else if (max < 0) { // "tail" mode: keep the last N
		int len;
		boolean rolled = false;
		byte[] last = null;
		byte[] data = null;
		do {
		if (last != null) rolled = true;
		byte[] tmp = last;
		last = data;
		data = tmp;
		if (data == null) data = new byte[-max];
		len = bis.read(data);
		} while (len == data.length);

		if (last == null && len <= 0) return "";
		if (last == null) return new String(data, 0, len);
		if (len > 0) {
		rolled = true;
		System.arraycopy(last, len, last, 0, last.length - len);
		System.arraycopy(data, 0, last, last.length - len, len);
		}
		if (ellipsis == null \|\| !rolled) return new String(last);
		return ellipsis + new String(last);
		} else { // "cat" mode: size unknown, read it all in streaming fashion
		ByteArrayOutputStream contents = new ByteArrayOutputStream();
		int len;
		byte[] data = new byte[1024];
		do {
		len = bis.read(data);
		if (len > 0) contents.write(data, 0, len);
		} while (len == data.length);
		return contents.toString();
		}
		} finally {
		bis.close();
		input.close();
		}
		}

		/**
		* Perform an fsync on the given FileOutputStream. The stream at this
		* point must be flushed but not yet closed.
		*
		* @hide
		*/
		public static boolean sync(FileOutputStream stream) {
		try {
		if (stream != null) {
		stream.getFD().sync();
		}
		return true;
		} catch (IOException e) {
		}
		return false;
		}

		/**
		* List the files in the directory or return empty file.
		*
		* @hide
		*/
		public static @NonNull File[] listFilesOrEmpty(@Nullable File dir) {
		return (dir != null) ? ArrayUtils.defeatNullable(dir.listFiles())
		: ArrayUtils.EMPTY_FILE;
		}
		}