1 /*
2 * Copyright (C) 2018 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 "builtins.h"
18 #include "first_stage_init.h"
19 #include "init.h"
20 #include "selinux.h"
21 #include "subcontext.h"
22 #include "ueventd.h"
23
24 #include <android-base/logging.h>
25
26 #if __has_feature(address_sanitizer)
27 #include <sanitizer/asan_interface.h>
28 #endif
29
30 #if __has_feature(address_sanitizer)
31 // Load asan.options if it exists since these are not yet in the environment.
32 // Always ensure detect_container_overflow=0 as there are false positives with this check.
33 // Always ensure abort_on_error=1 to ensure we reboot to bootloader for development builds.
__asan_default_options()34 extern "C" const char* __asan_default_options() {
35 return "include_if_exists=/system/asan.options:detect_container_overflow=0:abort_on_error=1";
36 }
37
38 __attribute__((no_sanitize("address", "memory", "thread", "undefined"))) extern "C" void
__sanitizer_report_error_summary(const char * summary)39 __sanitizer_report_error_summary(const char* summary) {
40 LOG(ERROR) << "Init (error summary): " << summary;
41 }
42
43 __attribute__((no_sanitize("address", "memory", "thread", "undefined"))) static void
AsanReportCallback(const char * str)44 AsanReportCallback(const char* str) {
45 LOG(ERROR) << "Init: " << str;
46 }
47 #endif
48
49 using namespace android::init;
50
main(int argc,char ** argv)51 int main(int argc, char** argv) {
52 #if __has_feature(address_sanitizer)
53 __asan_set_error_report_callback(AsanReportCallback);
54 #endif
55 // Boost prio which will be restored later
56 setpriority(PRIO_PROCESS, 0, -20);
57 if (!strcmp(basename(argv[0]), "ueventd")) {
58 return ueventd_main(argc, argv);
59 }
60
61 if (argc > 1) {
62 if (!strcmp(argv[1], "subcontext")) {
63 android::base::InitLogging(argv, &android::base::KernelLogger);
64 const BuiltinFunctionMap& function_map = GetBuiltinFunctionMap();
65
66 return SubcontextMain(argc, argv, &function_map);
67 }
68
69 if (!strcmp(argv[1], "selinux_setup")) {
70 return SetupSelinux(argv);
71 }
72
73 if (!strcmp(argv[1], "second_stage")) {
74 return SecondStageMain(argc, argv);
75 }
76 }
77
78 return FirstStageMain(argc, argv);
79 }
80