1
2 /*
3 * Copyright (c) 2021 Huawei Device Co., Ltd.
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 #include <errno.h>
17 #include <fcntl.h>
18 #include <pthread.h>
19 #include <sched.h>
20 #include <signal.h>
21 #include <stdbool.h>
22 #include <stdint.h>
23 #include <stdio.h>
24 #include <sys/capability.h>
25 #include <sys/mman.h>
26 #include <sys/prctl.h>
27 #include <sys/syscall.h>
28 #include <sys/time.h>
29 #include <sys/types.h>
30 #include <sys/uio.h>
31 #include <sys/wait.h>
32 #include <linux/futex.h>
33
34 #include "beget_ext.h"
35 #include "securec.h"
36 #include "init_cmds.h"
37 #include "init_log.h"
38 #include "init_service.h"
39 #include "hookmgr.h"
40 #include "bootstage.h"
41 #include "crash_handler.h"
42
43 static const SignalInfo g_platformSignals[] = {
44 { SIGABRT, "SIGABRT" },
45 { SIGBUS, "SIGBUS" },
46 { SIGFPE, "SIGFPE" },
47 { SIGILL, "SIGILL" },
48 { SIGSEGV, "SIGSEGV" },
49 #if defined(SIGSTKFLT)
50 { SIGSTKFLT, "SIGSTKFLT" },
51 #endif
52 { SIGSYS, "SIGSYS" },
53 { SIGTRAP, "SIGTRAP" },
54 };
55
DoCriticalInit(void)56 static void DoCriticalInit(void)
57 {
58 #ifndef OHOS_LITE
59 Service service = {
60 .pid = 1,
61 .name = "init",
62 };
63
64 BEGET_LOGI("ServiceReap init begin");
65 HookMgrExecute(GetBootStageHookMgr(), INIT_SERVICE_REAP, (void *)&service, NULL);
66 BEGET_LOGI("ServiceReap init end!");
67 #endif
68 }
69
SignalHandler(int sig,siginfo_t * si,void * context)70 static void SignalHandler(int sig, siginfo_t *si, void *context)
71 {
72 int32_t pid = getpid();
73 if (pid == 1) {
74 sleep(1);
75 DoCriticalInit();
76 ExecReboot("panic");
77 } else {
78 exit(-1);
79 }
80 }
81
InstallLocalSignalHandler(void)82 void InstallLocalSignalHandler(void)
83 {
84 sigset_t set;
85 sigemptyset(&set);
86 struct sigaction action;
87 memset_s(&action, sizeof(action), 0, sizeof(action));
88 action.sa_sigaction = SignalHandler;
89 action.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
90
91 for (size_t i = 0; i < sizeof(g_platformSignals) / sizeof(g_platformSignals[0]); i++) {
92 int32_t sig = g_platformSignals[i].sigNo;
93 sigemptyset(&action.sa_mask);
94 sigaddset(&action.sa_mask, sig);
95
96 sigaddset(&set, sig);
97 if (sigaction(sig, &action, NULL) != 0) {
98 BEGET_LOGE("Failed to register signal(%d)", sig);
99 }
100 }
101 sigprocmask(SIG_UNBLOCK, &set, NULL);
102 }