1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server; 18 19 import android.content.Context; 20 import android.os.Binder; 21 import android.os.Environment; 22 import android.os.StatFs; 23 import android.os.SystemClock; 24 import android.os.storage.StorageManager; 25 import android.service.diskstats.DiskStatsAppSizesProto; 26 import android.service.diskstats.DiskStatsCachedValuesProto; 27 import android.service.diskstats.DiskStatsFreeSpaceProto; 28 import android.service.diskstats.DiskStatsServiceDumpProto; 29 import android.util.Log; 30 import android.util.Slog; 31 import android.util.proto.ProtoOutputStream; 32 33 import com.android.internal.util.DumpUtils; 34 import com.android.server.storage.DiskStatsFileLogger; 35 import com.android.server.storage.DiskStatsLoggingService; 36 37 import libcore.io.IoUtils; 38 39 import org.json.JSONArray; 40 import org.json.JSONException; 41 import org.json.JSONObject; 42 43 import java.io.File; 44 import java.io.FileDescriptor; 45 import java.io.FileOutputStream; 46 import java.io.IOException; 47 import java.io.PrintWriter; 48 49 /** 50 * This service exists only as a "dumpsys" target which reports 51 * statistics about the status of the disk. 52 */ 53 public class DiskStatsService extends Binder { 54 private static final String TAG = "DiskStatsService"; 55 private static final String DISKSTATS_DUMP_FILE = "/data/system/diskstats_cache.json"; 56 57 private final Context mContext; 58 59 public DiskStatsService(Context context) { 60 mContext = context; 61 DiskStatsLoggingService.schedule(context); 62 } 63 64 @Override 65 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 66 if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, TAG, pw)) return; 67 68 // Run a quick-and-dirty performance test: write 512 bytes 69 byte[] junk = new byte[512]; 70 for (int i = 0; i < junk.length; i++) junk[i] = (byte) i; // Write nonzero bytes 71 72 File tmp = new File(Environment.getDataDirectory(), "system/perftest.tmp"); 73 FileOutputStream fos = null; 74 IOException error = null; 75 76 long before = SystemClock.uptimeMillis(); 77 try { 78 fos = new FileOutputStream(tmp); 79 fos.write(junk); 80 } catch (IOException e) { 81 error = e; 82 } finally { 83 try { if (fos != null) fos.close(); } catch (IOException e) {} 84 } 85 86 long after = SystemClock.uptimeMillis(); 87 if (tmp.exists()) tmp.delete(); 88 89 boolean protoFormat = hasOption(args, "--proto"); 90 ProtoOutputStream proto = null; 91 92 if (protoFormat) { 93 proto = new ProtoOutputStream(fd); 94 pw = null; 95 proto.write(DiskStatsServiceDumpProto.HAS_TEST_ERROR, error != null); 96 if (error != null) { 97 proto.write(DiskStatsServiceDumpProto.ERROR_MESSAGE, error.toString()); 98 } else { 99 proto.write(DiskStatsServiceDumpProto.WRITE_512B_LATENCY_MILLIS, after - before); 100 } 101 } else { 102 if (error != null) { 103 pw.print("Test-Error: "); 104 pw.println(error.toString()); 105 } else { 106 pw.print("Latency: "); 107 pw.print(after - before); 108 pw.println("ms [512B Data Write]"); 109 } 110 } 111 112 reportFreeSpace(Environment.getDataDirectory(), "Data", pw, proto, 113 DiskStatsFreeSpaceProto.FOLDER_DATA); 114 reportFreeSpace(Environment.getDownloadCacheDirectory(), "Cache", pw, proto, 115 DiskStatsFreeSpaceProto.FOLDER_CACHE); 116 reportFreeSpace(new File("/system"), "System", pw, proto, 117 DiskStatsFreeSpaceProto.FOLDER_SYSTEM); 118 119 boolean fileBased = StorageManager.isFileEncryptedNativeOnly(); 120 boolean blockBased = fileBased ? false : StorageManager.isBlockEncrypted(); 121 if (protoFormat) { 122 if (fileBased) { 123 proto.write(DiskStatsServiceDumpProto.ENCRYPTION, 124 DiskStatsServiceDumpProto.ENCRYPTION_FILE_BASED); 125 } else if (blockBased) { 126 proto.write(DiskStatsServiceDumpProto.ENCRYPTION, 127 DiskStatsServiceDumpProto.ENCRYPTION_FULL_DISK); 128 } else { 129 proto.write(DiskStatsServiceDumpProto.ENCRYPTION, 130 DiskStatsServiceDumpProto.ENCRYPTION_NONE); 131 } 132 } else if (fileBased) { 133 pw.println("File-based Encryption: true"); 134 } 135 136 if (protoFormat) { 137 reportCachedValuesProto(proto); 138 } else { 139 reportCachedValues(pw); 140 } 141 142 if (protoFormat) { 143 proto.flush(); 144 } 145 // TODO: Read /proc/yaffs and report interesting values; 146 // add configurable (through args) performance test parameters. 147 } 148 149 private void reportFreeSpace(File path, String name, PrintWriter pw, 150 ProtoOutputStream proto, int folderType) { 151 try { 152 StatFs statfs = new StatFs(path.getPath()); 153 long bsize = statfs.getBlockSize(); 154 long avail = statfs.getAvailableBlocks(); 155 long total = statfs.getBlockCount(); 156 if (bsize <= 0 || total <= 0) { 157 throw new IllegalArgumentException( 158 "Invalid stat: bsize=" + bsize + " avail=" + avail + " total=" + total); 159 } 160 161 if (proto != null) { 162 long freeSpaceToken = proto.start(DiskStatsServiceDumpProto.PARTITIONS_FREE_SPACE); 163 proto.write(DiskStatsFreeSpaceProto.FOLDER, folderType); 164 proto.write(DiskStatsFreeSpaceProto.AVAILABLE_SPACE, avail * bsize / 1024); 165 proto.write(DiskStatsFreeSpaceProto.TOTAL_SPACE, total * bsize / 1024); 166 proto.end(freeSpaceToken); 167 } else { 168 pw.print(name); 169 pw.print("-Free: "); 170 pw.print(avail * bsize / 1024); 171 pw.print("K / "); 172 pw.print(total * bsize / 1024); 173 pw.print("K total = "); 174 pw.print(avail * 100 / total); 175 pw.println("% free"); 176 } 177 } catch (IllegalArgumentException e) { 178 if (proto != null) { 179 // Empty proto 180 } else { 181 pw.print(name); 182 pw.print("-Error: "); 183 pw.println(e.toString()); 184 } 185 return; 186 } 187 } 188 189 private boolean hasOption(String[] args, String arg) { 190 for (String opt : args) { 191 if (arg.equals(opt)) { 192 return true; 193 } 194 } 195 return false; 196 } 197 198 // If you change this method, make sure to modify the Proto version of this method as well. 199 private void reportCachedValues(PrintWriter pw) { 200 try { 201 String jsonString = IoUtils.readFileAsString(DISKSTATS_DUMP_FILE); 202 JSONObject json = new JSONObject(jsonString); 203 pw.print("App Size: "); 204 pw.println(json.getLong(DiskStatsFileLogger.APP_SIZE_AGG_KEY)); 205 pw.print("App Cache Size: "); 206 pw.println(json.getLong(DiskStatsFileLogger.APP_CACHE_AGG_KEY)); 207 pw.print("Photos Size: "); 208 pw.println(json.getLong(DiskStatsFileLogger.PHOTOS_KEY)); 209 pw.print("Videos Size: "); 210 pw.println(json.getLong(DiskStatsFileLogger.VIDEOS_KEY)); 211 pw.print("Audio Size: "); 212 pw.println(json.getLong(DiskStatsFileLogger.AUDIO_KEY)); 213 pw.print("Downloads Size: "); 214 pw.println(json.getLong(DiskStatsFileLogger.DOWNLOADS_KEY)); 215 pw.print("System Size: "); 216 pw.println(json.getLong(DiskStatsFileLogger.SYSTEM_KEY)); 217 pw.print("Other Size: "); 218 pw.println(json.getLong(DiskStatsFileLogger.MISC_KEY)); 219 pw.print("Package Names: "); 220 pw.println(json.getJSONArray(DiskStatsFileLogger.PACKAGE_NAMES_KEY)); 221 pw.print("App Sizes: "); 222 pw.println(json.getJSONArray(DiskStatsFileLogger.APP_SIZES_KEY)); 223 pw.print("Cache Sizes: "); 224 pw.println(json.getJSONArray(DiskStatsFileLogger.APP_CACHES_KEY)); 225 } catch (IOException | JSONException e) { 226 Log.w(TAG, "exception reading diskstats cache file", e); 227 } 228 } 229 230 private void reportCachedValuesProto(ProtoOutputStream proto) { 231 try { 232 String jsonString = IoUtils.readFileAsString(DISKSTATS_DUMP_FILE); 233 JSONObject json = new JSONObject(jsonString); 234 long cachedValuesToken = proto.start(DiskStatsServiceDumpProto.CACHED_FOLDER_SIZES); 235 236 proto.write(DiskStatsCachedValuesProto.AGG_APPS_SIZE, 237 json.getLong(DiskStatsFileLogger.APP_SIZE_AGG_KEY)); 238 proto.write(DiskStatsCachedValuesProto.AGG_APPS_CACHE_SIZE, 239 json.getLong(DiskStatsFileLogger.APP_CACHE_AGG_KEY)); 240 proto.write(DiskStatsCachedValuesProto.PHOTOS_SIZE, 241 json.getLong(DiskStatsFileLogger.PHOTOS_KEY)); 242 proto.write(DiskStatsCachedValuesProto.VIDEOS_SIZE, 243 json.getLong(DiskStatsFileLogger.VIDEOS_KEY)); 244 proto.write(DiskStatsCachedValuesProto.AUDIO_SIZE, 245 json.getLong(DiskStatsFileLogger.AUDIO_KEY)); 246 proto.write(DiskStatsCachedValuesProto.DOWNLOADS_SIZE, 247 json.getLong(DiskStatsFileLogger.DOWNLOADS_KEY)); 248 proto.write(DiskStatsCachedValuesProto.SYSTEM_SIZE, 249 json.getLong(DiskStatsFileLogger.SYSTEM_KEY)); 250 proto.write(DiskStatsCachedValuesProto.OTHER_SIZE, 251 json.getLong(DiskStatsFileLogger.MISC_KEY)); 252 253 JSONArray packageNamesArray = json.getJSONArray(DiskStatsFileLogger.PACKAGE_NAMES_KEY); 254 JSONArray appSizesArray = json.getJSONArray(DiskStatsFileLogger.APP_SIZES_KEY); 255 JSONArray cacheSizesArray = json.getJSONArray(DiskStatsFileLogger.APP_CACHES_KEY); 256 final int len = packageNamesArray.length(); 257 if (len == appSizesArray.length() && len == cacheSizesArray.length()) { 258 for (int i = 0; i < len; i++) { 259 long packageToken = proto.start(DiskStatsCachedValuesProto.APP_SIZES); 260 261 proto.write(DiskStatsAppSizesProto.PACKAGE_NAME, 262 packageNamesArray.getString(i)); 263 proto.write(DiskStatsAppSizesProto.APP_SIZE, appSizesArray.getLong(i)); 264 proto.write(DiskStatsAppSizesProto.CACHE_SIZE, cacheSizesArray.getLong(i)); 265 266 proto.end(packageToken); 267 } 268 } else { 269 Slog.wtf(TAG, "Sizes of packageNamesArray, appSizesArray and cacheSizesArray " 270 + "are not the same"); 271 } 272 273 proto.end(cachedValuesToken); 274 } catch (IOException | JSONException e) { 275 Log.w(TAG, "exception reading diskstats cache file", e); 276 } 277 } 278 } 279
