mirror of
https://gitee.com/openharmony/startup_init
synced 2024-11-27 10:20:46 +00:00
92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <signal.h>
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#include <sys/wait.h>
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#include "control_fd.h"
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#include "init.h"
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#include "init_adapter.h"
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#include "init_log.h"
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#include "init_param.h"
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#include "init_context.h"
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#include "init_service_manager.h"
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#include "loop_event.h"
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#include "crash_handler.h"
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static SignalHandle g_sigHandle = NULL;
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static pid_t HandleSigChild(const struct signalfd_siginfo *siginfo)
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{
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int procStat = 0;
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pid_t sigPID = waitpid(-1, &procStat, WNOHANG);
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if (sigPID <= 0) {
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return sigPID;
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}
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Service* service = GetServiceByPid(sigPID);
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const char *serviceName = (service == NULL) ? "Unknown" : service->name;
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// check child process exit status
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if (WIFSIGNALED(procStat)) {
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INIT_LOGW("Child process %s(pid %d) exit with signal : %d", serviceName, sigPID, WTERMSIG(procStat));
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} else if (WIFEXITED(procStat)) {
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INIT_LOGW("Child process %s(pid %d) exit with code : %d", serviceName, sigPID, WEXITSTATUS(procStat));
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if (service != NULL) {
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service->lastErrno = WEXITSTATUS(procStat);
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}
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}
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CmdServiceProcessDelClient(sigPID);
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StopSubInit(sigPID);
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INIT_LOGW("Service warning %s, SIGCHLD received, pid:%d uid:%d status:%d.",
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serviceName, sigPID, siginfo->ssi_uid, procStat);
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CheckWaitPid(sigPID);
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ServiceReap(service);
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return sigPID;
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}
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INIT_STATIC void ProcessSignal(const struct signalfd_siginfo *siginfo)
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{
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switch (siginfo->ssi_signo) {
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case SIGCHLD: {
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while (HandleSigChild(siginfo) > 0) {
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;
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}
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break;
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}
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case SIGTERM: {
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INIT_LOGI("SigHandler, SIGTERM received.");
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SystemWriteParam("startup.device.ctl", "stop");
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// exec reboot use toybox reboot cmd
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ExecReboot("reboot");
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break;
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}
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default:
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INIT_LOGI("SigHandler, unsupported signal %d.", siginfo->ssi_signo);
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break;
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}
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}
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void SignalInit(void)
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{
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if (LE_CreateSignalTask(LE_GetDefaultLoop(), &g_sigHandle, ProcessSignal) == 0) {
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if (LE_AddSignal(LE_GetDefaultLoop(), g_sigHandle, SIGCHLD) != 0) {
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INIT_LOGW("start SIGCHLD handler failed");
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}
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if (LE_AddSignal(LE_GetDefaultLoop(), g_sigHandle, SIGTERM) != 0) {
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INIT_LOGW("start SIGTERM handler failed");
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}
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}
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InstallLocalSignalHandler();
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}
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