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 <libunwind.h>
35
36#include "beget_ext.h"
37#include "securec.h"
38#include "init_cmds.h"
39#include "init_log.h"
40#include "crash_handler.h"
41
42static const SignalInfo g_platformSignals[] = {
43    { SIGABRT, "SIGABRT" },
44    { SIGBUS, "SIGBUS" },
45    { SIGFPE, "SIGFPE" },
46    { SIGILL, "SIGILL" },
47    { SIGSEGV, "SIGSEGV" },
48#if defined(SIGSTKFLT)
49    { SIGSTKFLT, "SIGSTKFLT" },
50#endif
51    { SIGSYS, "SIGSYS" },
52    { SIGTRAP, "SIGTRAP" },
53};
54
55static void SignalHandler(int sig, siginfo_t *si, void *context)
56{
57    int32_t pid = getpid();
58    if (pid == 1) {
59        ExecReboot("panic");
60    }
61}
62
63void InstallLocalSignalHandler(void)
64{
65    sigset_t set;
66    sigemptyset(&set);
67    struct sigaction action;
68    memset_s(&action, sizeof(action), 0, sizeof(action));
69    action.sa_sigaction = SignalHandler;
70    action.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
71
72    for (size_t i = 0; i < sizeof(g_platformSignals) / sizeof(g_platformSignals[0]); i++) {
73        int32_t sig = g_platformSignals[i].sigNo;
74        sigemptyset(&action.sa_mask);
75        sigaddset(&action.sa_mask, sig);
76
77        sigaddset(&set, sig);
78        if (sigaction(sig, &action, NULL) != 0) {
79            BEGET_LOGE("Failed to register signal(%d)", sig);
80        }
81    }
82    sigprocmask(SIG_UNBLOCK, &set, NULL);
83}