daemon.c

/* This is my template to fork a deamon process in *nix */
/* <[email protected]> */

static void fork_daemon(void) {
    pid_t pid = fork();
    if(pid < 0) {
        fprintf(stderr, "Fork daemon failed\n");
        exit(EXIT_FAILURE);
    } else if(pid > 0) {
        // Success. The parent leaves here
        exit(EXIT_SUCCESS);
    }

    /* Fork off for the second time */
    /* This is needed to detach the deamon from a terminal */
    pid = fork();
    if(pid < 0) {
        fprintf(stderr, "Fork daemon failed (step two)\n");
        exit(EXIT_FAILURE);
    } else if(pid > 0) {
        // Success. The parent again leaves here
        exit(EXIT_SUCCESS);
    }
}