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 storaged->report_storage_info();
53
54 LOG_TO(SYSTEM, INFO) << "storaged: Start";
55
56 for (;;) {
57 storaged->event_checked();
58 storaged->pause();
59 }
60 return NULL;
61 }
62
help_message(void)63 static void help_message(void) {
64 printf("usage: storaged [OPTION]\n");
65 printf(" -u --uid Dump uid I/O usage to stdout\n");
66 printf(" -s --start Start storaged (default)\n");
67 fflush(stdout);
68 }
69
main(int argc,char ** argv)70 int main(int argc, char** argv) {
71 int flag_main_service = 0;
72 int flag_dump_uid = 0;
73 int opt;
74
75 for (;;) {
76 int opt_idx = 0;
77 static struct option long_options[] = {
78 {"start", no_argument, 0, 's'},
79 {"kill", no_argument, 0, 'k'},
80 {"uid", no_argument, 0, 'u'},
81 {"help", no_argument, 0, 'h'}
82 };
83 opt = getopt_long(argc, argv, ":skdhu0", long_options, &opt_idx);
84 if (opt == -1) {
85 break;
86 }
87
88 switch (opt) {
89 case 's':
90 flag_main_service = 1;
91 break;
92 case 'u':
93 flag_dump_uid = 1;
94 break;
95 case 'h':
96 help_message();
97 return 0;
98 case '?':
99 default:
100 fprintf(stderr, "no supported option\n");
101 help_message();
102 return -1;
103 }
104 }
105
106 if (argc == 1) {
107 flag_main_service = 1;
108 }
109
110 if (flag_main_service && flag_dump_uid) {
111 fprintf(stderr, "Invalid arguments. Option \"start\" and \"dump\" cannot be used together.\n");
112 help_message();
113 return -1;
114 }
115
116 if (flag_main_service) { // start main thread
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