static int child()

in src/native/unix/native/jsvc-unix.c [823:953]

• 102 lines of code
• 24 McCabe index (conditional complexity)

static int child(arg_data *args, home_data *data, uid_t uid, gid_t gid)
{
    int ret = 0;
    struct sigaction act;

    /* check the pid file */
    ret = check_pid(args);
    if (args->vers != true && args->chck != true) {
        if (ret == 122)
            return ret;
        if (ret < 0)
            return ret;
    }

#ifdef OS_LINUX
    /* setuid()/setgid() only apply the current thread so we must do it now */
    if (linuxset_user_group(args->user, uid, gid) != 0)
        return 4;
#endif
    /* Initialize the Java VM */
    if (java_init(args, data) != true) {
        log_debug("java_init failed");
        return 1;
    }
    else
        log_debug("java_init done");

    /* Check wether we need to dump the VM version */
    if (args->vers == true) {
        log_error("jsvc (Apache Commons Daemon) " JSVC_VERSION_STRING);
        log_error("Copyright (c) 1999-2025 Apache Software Foundation.");
        if (java_version() != true) {
            return -1;
        }
        else
            return 0;
    }
    /* Check wether we need to dump the VM version */
    else if (args->vershow == true) {
        if (java_version() != true) {
            return 7;
        }
    }

    /* Do we have to do a "check-only" initialization? */
    if (args->chck == true) {
        if (java_check(args) != true)
            return 2;
        printf("Service \"%s\" checked successfully\n", args->clas);
        return 0;
    }

    /* Load the service */
    if (java_load(args) != true) {
        log_debug("java_load failed");
        return 3;
    }
    else
        log_debug("java_load done");

    /* Downgrade user */
#ifdef OS_LINUX
    if (args->user && set_caps(0) != 0) {
        log_debug("set_caps (0) failed");
        return 4;
    }
#else
    if (set_user_group(args->user, uid, gid) != 0)
        return 4;
#endif

    /* Start the service */
    if (java_start() != true) {
        log_debug("java_start failed");
        return 5;
    }
    else
        log_debug("java_start done");

    /* Install signal handlers */
    memset(&act, '\0', sizeof(act));
    act.sa_handler = handler;
    sigemptyset(&act.sa_mask);
    act.sa_flags = SA_RESTART | SA_NOCLDSTOP;

    sigaction(SIGHUP, &act, NULL);
    sigaction(SIGUSR1, &act, NULL);
    sigaction(SIGUSR2, &act, NULL);
    sigaction(SIGTERM, &act, NULL);
    sigaction(SIGINT, &act, NULL);
    controlled = getpid ();
    log_debug("Waiting for a signal to be delivered");
    create_tmp_file(args);
    while (!stopping) {
#if defined(OSD_POSIX)
        java_sleep(60);
        /* pause(); */
#else
        /* pause() is not threadsafe */
        sleep(60);
#endif
        if (doreopen) {
            doreopen = false;
            set_output(args->outfile, args->errfile, args->redirectstdin, args->procname);
        }
        if (dosignal) {
            dosignal = false;
            java_signal();
        }
    }
    remove_tmp_file(args);
    log_debug("Shutdown or reload requested: exiting");

    /* Stop the service */
    if (java_stop() != true)
        return 6;

    if (doreload == true)
        ret = 123;
    else
        ret = 0;

    /* Destroy the service */
    java_destroy();

    /* Destroy the Java VM */
    if (JVM_destroy(ret) != true)
        return 7;

    return ret;
}