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      1 /*
      2  * Copyright (C) 2013 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 <errno.h>
     18 #include <stdio.h>
     19 #include <stdlib.h>
     20 #include <cutils/properties.h>
     21 #include <cutils/android_reboot.h>
     22 #include <unistd.h>
     23 
     24 int main(int argc, char *argv[])
     25 {
     26     int ret;
     27     size_t prop_len;
     28     char property_val[PROPERTY_VALUE_MAX];
     29     const char *cmd = "reboot";
     30     char *optarg = "";
     31 
     32     opterr = 0;
     33     do {
     34         int c;
     35 
     36         c = getopt(argc, argv, "p");
     37 
     38         if (c == -1) {
     39             break;
     40         }
     41 
     42         switch (c) {
     43         case 'p':
     44             cmd = "shutdown";
     45             break;
     46         case '?':
     47             fprintf(stderr, "usage: %s [-p] [rebootcommand]\n", argv[0]);
     48             exit(EXIT_FAILURE);
     49         }
     50     } while (1);
     51 
     52     if(argc > optind + 1) {
     53         fprintf(stderr, "%s: too many arguments\n", argv[0]);
     54         exit(EXIT_FAILURE);
     55     }
     56 
     57     if (argc > optind)
     58         optarg = argv[optind];
     59 
     60     prop_len = snprintf(property_val, sizeof(property_val), "%s,%s", cmd, optarg);
     61     if (prop_len >= sizeof(property_val)) {
     62         fprintf(stderr, "reboot command too long: %s\n", optarg);
     63         exit(EXIT_FAILURE);
     64     }
     65 
     66     ret = property_set(ANDROID_RB_PROPERTY, property_val);
     67     if(ret < 0) {
     68         perror("reboot");
     69         exit(EXIT_FAILURE);
     70     }
     71 
     72     // Don't return early. Give the reboot command time to take effect
     73     // to avoid messing up scripts which do "adb shell reboot && adb wait-for-device"
     74     while(1) { pause(); }
     75 
     76     fprintf(stderr, "Done\n");
     77     return 0;
     78 }
     79