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 sp<storaged_t> storaged;
46
47 // Function of storaged's main thread
storaged_main(void *)48 void* storaged_main(void* /* unused */) {
49 storaged = new storaged_t();
50
51 storaged->init_battery_service();
52
53 LOG_TO(SYSTEM, INFO) << "storaged: Start";
54
55 for (;;) {
56 storaged->event_checked();
57 storaged->pause();
58 }
59 return NULL;
60 }
61
help_message(void)62 static void help_message(void) {
63 printf("usage: storaged [OPTION]\n");
64 printf(" -u --uid Dump uid I/O usage to stdout\n");
65 printf(" -s --start Start storaged (default)\n");
66 fflush(stdout);
67 }
68
main(int argc,char ** argv)69 int main(int argc, char** argv) {
70 int flag_main_service = 0;
71 int flag_dump_uid = 0;
72 int opt;
73
74 for (;;) {
75 int opt_idx = 0;
76 static struct option long_options[] = {
77 {"start", no_argument, 0, 's'},
78 {"kill", no_argument, 0, 'k'},
79 {"uid", no_argument, 0, 'u'},
80 {"help", no_argument, 0, 'h'}
81 };
82 opt = getopt_long(argc, argv, ":skdhu0", long_options, &opt_idx);
83 if (opt == -1) {
84 break;
85 }
86
87 switch (opt) {
88 case 's':
89 flag_main_service = 1;
90 break;
91 case 'u':
92 flag_dump_uid = 1;
93 break;
94 case 'h':
95 help_message();
96 return 0;
97 case '?':
98 default:
99 fprintf(stderr, "no supported option\n");
100 help_message();
101 return -1;
102 }
103 }
104
105 if (argc == 1) {
106 flag_main_service = 1;
107 }
108
109 if (flag_main_service && flag_dump_uid) {
110 fprintf(stderr, "Invalid arguments. Option \"start\" and \"dump\" cannot be used together.\n");
111 help_message();
112 return -1;
113 }
114
115 if (flag_main_service) { // start main thread
116 report_storage_health();
117 // Start the main thread of storaged
118 pthread_t storaged_main_thread;
119 errno = pthread_create(&storaged_main_thread, NULL, storaged_main, NULL);
120 if (errno != 0) {
121 PLOG_TO(SYSTEM, ERROR) << "Failed to create main thread";
122 return -1;
123 }
124
125 defaultServiceManager()->addService(String16("storaged"), new Storaged());
126 android::ProcessState::self()->startThreadPool();
127 IPCThreadState::self()->joinThreadPool();
128 pthread_join(storaged_main_thread, NULL);
129
130 return 0;
131 }
132
133 if (flag_dump_uid) {
134 sp<IStoraged> storaged_service = get_storaged_service();
135 if (storaged_service == NULL) {
136 fprintf(stderr, "Cannot find storaged service.\nMaybe run storaged --start first?\n");
137 return -1;
138 }
139 std::vector<struct uid_info> res = storaged_service->dump_uids(NULL);
140
141 if (res.size() == 0) {
142 fprintf(stderr, "UID I/O is not readable in this version of kernel.\n");
143 return 0;
144 }
145
146 sort_running_uids_info(res);
147 log_console_running_uids_info(res);
148
149 return 0;
150 }
151
152 return 0;
153 }
154