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#include #include #include #include

void SignalH() { kill(getppid(),SIGKILL); printf("Parent killed"); return; }

int main() { int ret = fork(); if(ret==0) { sigset_t set; struct sigaction act; act.sa_handler = SignalH; if(sigaction(SIGINT,&act,NULL)==-1){ perror("Error using sigaction"); return -1; } sigemptyset(&set); sigaddset(&set,SIGUSR1); sigaddset(&set,SIGUSR2); sigprocmask(SIG_BLOCK,&set,NULL); printf("Child: My Parent id is %d ",getppid()); pause(); }else{ wait(NULL); printf("Parent: After child's termination "); } }