#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#include <stdio.h>

/* A "fire and forget" version of system().
   I.E. we don't have to wait for the child */
void systemIgnore(char *command) {
    int pid;
    if (command == 0) {
        fprintf(stderr,"NULL command passed to systemIgnore?\n");
        return;
    }
    pid = fork();
    if (pid == -1) {
        fprintf(stderr,"systemIgnore couldn't fork(1)!\n");
        return;
    }
    if (pid != 0) { //parent
        pid_t retpid;
        retpid = waitpid(pid, NULL, 0); //reap temp child
        //fprintf(stderr,"systemIgnore::waitpid returned [%d]\n", retpid);
    } else { //child
        int tmppid;
        tmppid = fork();
        if (tmppid == -1) {
            fprintf(stderr,"systemIgnore couldn't fork(2)!\n");
            _exit(127);
        }
        if (tmppid != 0) {
            _exit(0);
        } else { //grandchild will be reaped by init on exit
            setpgrp(); //so one can kill the whole group
            char *argv[4];
            argv[0] = "sh";
            argv[1] = "-c";
            argv[2] = command;
            argv[3] = NULL;
            execv("/bin/sh", argv);
            _exit(127); //error if get to here
        }
    }
}

#ifdef TEST_SI
int main(int argc, char** argv) {
    systemIgnore(argv[1]);
    //while(1){sleep(1);}
    return 0;
}
#endif