mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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46 lines
951 B
46 lines
951 B
4 years ago
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/*
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* This program handles SIGINT and forwards it to another process.
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* It is intended to be run as PID 1.
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*
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* Docker starts processes with "docker run" as PID 1.
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* On Linux, the default signal handler for PID 1 ignores any signals.
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* Therefore Ctrl-C aka SIGINT is ignored per default.
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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int pid = 0;
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void
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handle_sigint (int signum)
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{
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if(pid)
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kill(pid, SIGINT);
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}
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int main(int argc, char *argv[]){
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struct sigaction new_action;
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int status = -1;
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/* Set up the structure to specify the new action. */
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new_action.sa_handler = handle_sigint;
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sigemptyset (&new_action.sa_mask);
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new_action.sa_flags = 0;
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sigaction (SIGINT, &new_action, (void*)0);
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pid = fork();
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if(pid){
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wait(&status);
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return WEXITSTATUS(status);
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}else{
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status = execvp(argv[1], &argv[1]);
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perror("exec");
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return status;
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}
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}
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