【文章內容簡介】 8 // The reboot call is blocking, so we need to do it on another thread. 19 Thread thr = new Thread(Reboot) { 20 @Override 21 public void run() { 22 try { 23 (context, packageFile)。 24 } catch (IOException e) { 25 (TAG, Can39。t perform rebootInstallPackage, e)。 26 } 27 } 28 }。 29 ()。 30 }3. ./frameworks/base/core/java/android/os/:340 60 public class RecoverySystem {.....328 public static void installPackage(Context context, File packageFile)329 throws IOException {330 String filename = ()。331 String strExt2Path =().toString()。332 if((strExt2Path))333 {334 if(())335 {336 String newpath = (4)。337 (TAG, !!! REBOOTING TO INSTALL 1 + newpath + !!!)。338 String arg = update_package= + newpath。339 arg += \nlocale= + ().toString()。340 bootCommand(context, arg, true)。341 }342 else343 {344 String newpath =new String(/sdcard)+(())。345 (TAG, !!! REBOOTING TO INSTALL 2 + newpath + !!!)。346 String arg = update_package= + newpath。347 arg += \nlocale= + ().toString()。348 bootCommand(context, arg, true)。349 }350 351 }352 else if((().toString()))353 {354 if(())355 {356 String absPath = ()。357 if((,0)==1 amp。amp。 (/mnt/sda1/))358 {359 String newpath =new String(/udisk/)+(10)。360 (TAG, !!! REBOOTING TO INSTALL 31 + newpath + !!!)。361 String arg = update_package= + newpath。362 arg += \nlocale= + ().toString()。363 bootCommand(context, arg, true)。364 }365 else4. ./frameworks/base/core/java/android/os/:452 60 public class RecoverySystem { ......452 private static void bootCommand(Context context, String arg, Boolean update) throws IOException {453 ()。 // In case we need it454 ()。 // In case it39。s not writable455 ()。456 457 FileWriter mand = new FileWriter(COMMAND_FILE)。458 try {459 (arg)。460 (\n)。461 } finally {462 ()。463 }464 465 // Having written the mand file, go ahead and reboot466 PowerManager pm = (PowerManager) ()。467 if(update)468 (update)。469 else470 (recovery)。471 472 throw new IOException(Reboot failed (no permissions?))。473 }5. ./frameworks/base/services/java//android/server/power/:364 79 public final class PowerManagerService extends 80 implements {...... 364 private static native void nativeReboot(String reason) throws IOException。6. ./frameworks/base/services/jni/:277277 static void nativeReboot(JNIEnv *env, jclass clazz, jstring reason) {278 if (!closeCPU1())279 return。280 if (reason == NULL) {281 android_reboot(ANDROID_RB_RESTART, 0, 0)。282 } else {283 const char *chars = envGetStringUTFChars(reason, NULL)。284 android_reboot(ANDROID_RB_RESTART2, 0, (char *) chars)。285 envReleaseStringUTFChars(reason, chars)。 // In case it fails.286 }287 jniThrowIOException(env, errno)。288 }293 static JNINativeMethod gPowerManagerServiceMethods[] = {294 /* name, signature, funcPtr */295 { nativeInit, ()V,296 (void*) nativeInit },297 { nativeSetPowerState, (ZZ)V,298 (void*) nativeSetPowerState },299 { nativeAcquireSuspendBlocker, (Ljava/lang/String。)V,300 (void*) nativeAcquireSuspendBlocker },301 { nativeReleaseSuspendBlocker, (Ljava/lang/String。)V,302 (void*) nativeReleaseSuspendBlocker },303 { nativeSetInteractive, (Z)V,304 (void*) nativeSetInteractive },305 { nativeSetAutoSuspend, (Z)V,306 (void*) nativeSetAutoSuspend },307 { nativeShutdown, ()V,308 (void*) nativeShutdown },309 { nativeRebo