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      1 /*
      2  * Copyright (C) 2017 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 #include "BootAnimationUtil.h"
     18 
     19 #include <vector>
     20 #include <inttypes.h>
     21 
     22 #include <binder/IServiceManager.h>
     23 #include <cutils/properties.h>
     24 #include <utils/Log.h>
     25 #include <utils/SystemClock.h>
     26 #include <android-base/properties.h>
     27 
     28 namespace android {
     29 namespace {
     30 
     31 static constexpr char PLAY_SOUND_PROP_NAME[] = "persist.sys.bootanim.play_sound";
     32 static constexpr char BOOT_COMPLETED_PROP_NAME[] = "sys.boot_completed";
     33 static constexpr char POWER_CTL_PROP_NAME[] = "sys.powerctl";
     34 static constexpr char BOOTREASON_PROP_NAME[] = "ro.boot.bootreason";
     35 static const std::vector<std::string> PLAY_SOUND_BOOTREASON_BLACKLIST {
     36   "kernel_panic",
     37   "Panic",
     38   "Watchdog",
     39 };
     40 
     41 }  // namespace
     42 
     43 
     44 bool bootAnimationDisabled() {
     45     char value[PROPERTY_VALUE_MAX];
     46     property_get("debug.sf.nobootanimation", value, "0");
     47     if (atoi(value) > 0) {
     48         return true;
     49     }
     50 
     51     property_get("ro.boot.quiescent", value, "0");
     52     return atoi(value) > 0;
     53 }
     54 
     55 void waitForSurfaceFlinger() {
     56     // TODO: replace this with better waiting logic in future, b/35253872
     57     int64_t waitStartTime = elapsedRealtime();
     58     sp<IServiceManager> sm = defaultServiceManager();
     59     const String16 name("SurfaceFlinger");
     60     const int SERVICE_WAIT_SLEEP_MS = 100;
     61     const int LOG_PER_RETRIES = 10;
     62     int retry = 0;
     63     while (sm->checkService(name) == nullptr) {
     64         retry++;
     65         if ((retry % LOG_PER_RETRIES) == 0) {
     66             ALOGW("Waiting for SurfaceFlinger, waited for %" PRId64 " ms",
     67                   elapsedRealtime() - waitStartTime);
     68         }
     69         usleep(SERVICE_WAIT_SLEEP_MS * 1000);
     70     };
     71     int64_t totalWaited = elapsedRealtime() - waitStartTime;
     72     if (totalWaited > SERVICE_WAIT_SLEEP_MS) {
     73         ALOGI("Waiting for SurfaceFlinger took %" PRId64 " ms", totalWaited);
     74     }
     75 }
     76 
     77 bool playSoundsAllowed() {
     78     // Only play sounds for system boots, not runtime restarts.
     79     if (android::base::GetBoolProperty(BOOT_COMPLETED_PROP_NAME, false)) {
     80         return false;
     81     }
     82     // no audio while shutting down
     83     if (!android::base::GetProperty(POWER_CTL_PROP_NAME, "").empty()) {
     84         return false;
     85     }
     86     // Read the system property to see if we should play the sound.
     87     // If it's not present, default to allowed.
     88     if (!property_get_bool(PLAY_SOUND_PROP_NAME, 1)) {
     89         return false;
     90     }
     91 
     92     // Don't play sounds if this is a reboot due to an error.
     93     char bootreason[PROPERTY_VALUE_MAX];
     94     if (property_get(BOOTREASON_PROP_NAME, bootreason, nullptr) > 0) {
     95         for (const auto& str : PLAY_SOUND_BOOTREASON_BLACKLIST) {
     96             if (strcasecmp(str.c_str(), bootreason) == 0) {
     97                 return false;
     98             }
     99         }
    100     }
    101     return true;
    102 }
    103 
    104 }  // namespace android
    105