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      1 /*
      2  * Copyright (C) 2016 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 #define LOG_TAG "storaged"
     18 #define KLOG_LEVEL 6
     19 
     20 #include <fcntl.h>
     21 #include <getopt.h>
     22 #include <pthread.h>
     23 #include <stdio.h>
     24 #include <sys/capability.h>
     25 #include <sys/prctl.h>
     26 #include <sys/resource.h>
     27 #include <sys/stat.h>
     28 #include <sys/types.h>
     29 #include <vector>
     30 
     31 #include <android-base/macros.h>
     32 #include <android-base/logging.h>
     33 #include <android-base/stringprintf.h>
     34 #include <binder/ProcessState.h>
     35 #include <binder/IServiceManager.h>
     36 #include <binder/IPCThreadState.h>
     37 #include <cutils/android_get_control_file.h>
     38 #include <cutils/sched_policy.h>
     39 #include <private/android_filesystem_config.h>
     40 
     41 #include <storaged.h>
     42 #include <storaged_service.h>
     43 #include <storaged_utils.h>
     44 
     45 using namespace std;
     46 using namespace android;
     47 
     48 sp<storaged_t> storaged_sp;
     49 
     50 // Function of storaged's main thread
     51 void* storaged_main(void* /* unused */) {
     52     storaged_sp = new storaged_t();
     53 
     54     storaged_sp->init();
     55     storaged_sp->report_storage_info();
     56 
     57     LOG_TO(SYSTEM, INFO) << "storaged: Start";
     58 
     59     for (;;) {
     60         storaged_sp->event_checked();
     61         storaged_sp->pause();
     62     }
     63     return NULL;
     64 }
     65 
     66 void help_message(void) {
     67     printf("usage: storaged [OPTION]\n");
     68     printf("  -u    --uid                   Dump uid I/O usage to stdout\n");
     69     printf("  -t    --task                  Dump task I/O usage to stdout\n");
     70     printf("  -p    --perf                  Dump I/O perf history to stdout\n");
     71     printf("  -s    --start                 Start storaged (default)\n");
     72     fflush(stdout);
     73 }
     74 
     75 int main(int argc, char** argv) {
     76     bool flag_main_service = false;
     77     bool flag_dump_uid = false;
     78     bool flag_dump_task = false;
     79     bool flag_dump_perf = false;
     80     int opt;
     81 
     82     for (;;) {
     83         int opt_idx = 0;
     84         static struct option long_options[] = {
     85             {"perf",        no_argument,    nullptr, 'p'},
     86             {"start",       no_argument,    nullptr, 's'},
     87             {"task",        no_argument,    nullptr, 't'},
     88             {"uid",         no_argument,    nullptr, 'u'},
     89             {nullptr,       0,              nullptr,  0}
     90         };
     91         opt = getopt_long(argc, argv, ":pstu", long_options, &opt_idx);
     92         if (opt == -1) {
     93             break;
     94         }
     95 
     96         switch (opt) {
     97         case 'p':
     98             flag_dump_perf = true;
     99             break;
    100         case 's':
    101             flag_main_service = true;
    102             break;
    103         case 't':
    104             flag_dump_task = true;
    105             break;
    106         case 'u':
    107             flag_dump_uid = true;
    108             break;
    109         default:
    110             help_message();
    111             return 0;
    112         }
    113     }
    114 
    115     if (argc == 1) {
    116         flag_main_service = true;
    117     }
    118 
    119     if (flag_main_service && (flag_dump_uid || flag_dump_task)) {
    120         fprintf(stderr, "Invalid arguments. Option \"start\" and \"dump\" cannot be used together.\n");
    121         help_message();
    122         return -1;
    123     }
    124 
    125     if (flag_main_service) { // start main thread
    126         // Start the main thread of storaged
    127         pthread_t storaged_main_thread;
    128         errno = pthread_create(&storaged_main_thread, NULL, storaged_main, NULL);
    129         if (errno != 0) {
    130             PLOG_TO(SYSTEM, ERROR) << "Failed to create main thread";
    131             return -1;
    132         }
    133 
    134         if (StoragedService::start() != android::OK ||
    135             StoragedPrivateService::start() != android::OK) {
    136             PLOG_TO(SYSTEM, ERROR) << "Failed to start storaged service";
    137             return -1;
    138         }
    139 
    140         android::ProcessState::self()->startThreadPool();
    141         IPCThreadState::self()->joinThreadPool();
    142         pthread_join(storaged_main_thread, NULL);
    143 
    144         return 0;
    145     }
    146 
    147     sp<IStoragedPrivate> storaged_service = get_storaged_pri_service();
    148     if (storaged_service == NULL) {
    149         fprintf(stderr, "Cannot find storaged service.\nMaybe run storaged --start first?\n");
    150         return -1;
    151     }
    152 
    153     if (flag_dump_uid || flag_dump_task) {
    154         vector<UidInfo> uid_io;
    155         binder::Status status = storaged_service->dumpUids(&uid_io);
    156         if (!status.isOk() || uid_io.size() == 0) {
    157             fprintf(stderr, "UID I/O info is not available.\n");
    158             return 0;
    159         }
    160 
    161         sort_running_uids_info(uid_io);
    162         log_console_running_uids_info(uid_io, flag_dump_task);
    163     }
    164 
    165     if (flag_dump_perf) {
    166         vector<int> perf_history;
    167         binder::Status status = storaged_service->dumpPerfHistory(&perf_history);
    168         if (!status.isOk() || perf_history.size() == 0) {
    169             fprintf(stderr, "I/O perf history is not available.\n");
    170             return 0;
    171         }
    172 
    173         log_console_perf_history(perf_history);
    174     }
    175 
    176     return 0;
    177 }
    178