Ejemplo n.º 1
0
void* eng_uevt_thread(void *x)
{
    struct pollfd ufd;
    int sock = -1;
    int nr;

    sock = uevent_open_socket(256*1024, true);
    if(-1 == sock){
        ENG_LOG("%s: socket init failed !\n", __FUNCTION__);
        return 0;
    }
    if(eng_usb_state()) {
	g_armlog_enable = 1;
	sem_post(&g_armlog_sem);
    }
    ufd.events = POLLIN;
    ufd.fd = sock;
    while(1) {
        ufd.revents = 0;
        nr = poll(&ufd, 1, -1);
        if (nr <= 0)
            continue;
        if (ufd.revents == POLLIN)
            handle_device_fd(sock);
    }

    return 0;    
}
Ejemplo n.º 2
0
int main(void)
{
	int fd = 0;

	fd = open_uevent_socket();
	if (fd < 0) {
		printf("error!\n");
		return -1;
	}

	handle_device_fd(fd);
}
Ejemplo n.º 3
0
int ueventd_main(int argc, char **argv)
{
    /*
     * init sets the umask to 077 for forked processes. We need to
     * create files with exact permissions, without modification by
     * the umask.
     */
    umask(000);

    /* Prevent fire-and-forget children from becoming zombies.
     * If we should need to wait() for some children in the future
     * (as opposed to none right now), double-forking here instead
     * of ignoring SIGCHLD may be the better solution.
     */
    signal(SIGCHLD, SIG_IGN);

    open_devnull_stdio();
    klog_init();
    klog_set_level(KLOG_NOTICE_LEVEL);

    NOTICE("ueventd started!\n");

    selinux_callback cb;
    cb.func_log = selinux_klog_callback;
    selinux_set_callback(SELINUX_CB_LOG, cb);

    std::string hardware = property_get("ro.hardware");

    ueventd_parse_config_file("/ueventd.rc");
    ueventd_parse_config_file(android::base::StringPrintf("/ueventd.%s.rc", hardware.c_str()).c_str());

    device_init();

    pollfd ufd;
    ufd.events = POLLIN;
    ufd.fd = get_device_fd();

    while (true) {
        ufd.revents = 0;
        int nr = poll(&ufd, 1, -1);
        if (nr <= 0) {
            continue;
        }
        if (ufd.revents & POLLIN) {
            handle_device_fd();
        }
    }

    return 0;
}
Ejemplo n.º 4
0
int do_devwait(int nargs, char **args) {

    int dev_fd, uevent_fd, rc, timeout = DEVWAIT_TIMEOUT;
    struct pollfd ufds[1];

    uevent_fd = open_uevent_socket();

    ufds[0].fd = uevent_fd;
    ufds[0].events = POLLIN;

    for(;;) {

        dev_fd = open(args[1], O_RDONLY);
        if (dev_fd < 0) {
            if (errno != ENOENT) {
                ERROR("%s: open failed with error %d\n", __func__, errno);
                rc = -errno;
                break;
            }
        } else {
            return 0;
        }

        ufds[0].revents = 0;

        rc = poll(ufds, 1, DEVWAIT_POLL_TIME);

        if (rc == 0) {
            if (timeout > 0)
                timeout -= DEVWAIT_POLL_TIME;
            else {
                ERROR("%s: timed out waiting on file: %s\n", __func__, args[1]);
                rc = -ETIME;
                break;
            }
            continue;
        } else if (rc < 0) {
            ERROR("%s: poll request failed for file: %s\n", __func__, args[1]);
            break;
        }

        if (ufds[0].revents == POLLIN)
            handle_device_fd(uevent_fd);
    }

    return rc;
}
Ejemplo n.º 5
0
int ueventd_main(int argc, char **argv)
{
    struct pollfd ufd;
    int nr;
    char tmp[32];

        /* Prevent fire-and-forget children from becoming zombies.
         * If we should need to wait() for some children in the future
         * (as opposed to none right now), double-forking here instead
         * of ignoring SIGCHLD may be the better solution.
         */
    signal(SIGCHLD, SIG_IGN);

    open_devnull_stdio();
    klog_init();

    INFO("starting ueventd\n");

    /* Respect hardware passed in through the kernel cmd line. Here we will look
     * for androidboot.hardware param in kernel cmdline, and save its value in
     * hardware[]. */
    import_kernel_cmdline(0, import_kernel_nv);

    get_hardware_name(hardware, &revision);

    ueventd_parse_config_file("/ueventd.rc");

    snprintf(tmp, sizeof(tmp), "/ueventd.%s.rc", hardware);
    ueventd_parse_config_file(tmp);

    device_init();

    ufd.events = POLLIN;
    ufd.fd = get_device_fd();

    while(1) {
        ufd.revents = 0;
        nr = poll(&ufd, 1, -1);
        if (nr <= 0)
            continue;
        if (ufd.revents == POLLIN)
               handle_device_fd();
    }
}
Ejemplo n.º 6
0
int ueventd_main(int argc, char **argv)
{
    struct pollfd ufd;
    int nr;
    char tmp[32];

    /*
     * init sets the umask to 077 for forked processes. We need to
     * create files with exact permissions, without modification by
     * the umask.
     */
    umask(000);

    /* Prevent fire-and-forget children from becoming zombies.
     * If we should need to wait() for some children in the future
     * (as opposed to none right now), double-forking here instead
     * of ignoring SIGCHLD may be the better solution.
     */
    signal(SIGCHLD, SIG_IGN);

    open_devnull_stdio();
    klog_init();

    INFO("starting ueventd\n");

    /* Respect hardware passed in through the kernel cmd line. Here we will look
     * for androidboot.hardware param in kernel cmdline, and save its value in
     * hardware[]. */
    import_kernel_cmdline(0, import_kernel_nv);

    get_hardware_name(hardware, &revision);

    ueventd_parse_config_file("/ueventd.rc");

    snprintf(tmp, sizeof(tmp), "/ueventd.%s.rc", hardware);
    ueventd_parse_config_file(tmp);

    /* aosp-hybris move original ramdisk files to /android dir, so we
     * also need to parse this dirs.
     */
    ueventd_parse_config_file("/android/ueventd.rc");

    snprintf(tmp, sizeof(tmp), "/android/ueventd.%s.rc", hardware);
    ueventd_parse_config_file(tmp);

    device_init();

    ufd.events = POLLIN;
    ufd.fd = get_device_fd();

    while(1) {
        ufd.revents = 0;
        nr = poll(&ufd, 1, -1);
        if (nr <= 0)
            continue;
        if (ufd.revents & POLLERR) {
            ERROR("got POLLERR, terminating ueventd\n");
            exit(1);
        }
        if (ufd.revents == POLLIN)
            handle_device_fd();
    }
}
Ejemplo n.º 7
0
int ueventd_main(int argc, char **argv)
{
    struct pollfd ufd;
    int nr;
    char tmp[32];

    /* kernel will launch a program in user space to load
     * modules, by default it is modprobe.
     * Kernel doesn't send module parameters, so we don't
     * need to support them.
     * No deferred loading in this case.
     */
    if (!strcmp(basename(argv[0]), "modprobe")) {
        if (argc >= 4
                && argv[3] != NULL
                && *argv[3] != '\0') {
            uid_t uid;

            /* We only accept requests from root user (kernel) */
            uid = getuid();
            if (uid)
                return -EPERM;

            return module_probe(argv[3]);
        } else {
            /* modprobe is called without enough arguments */
            return -EINVAL;
        }
    }

    /*
     * init sets the umask to 077 for forked processes. We need to
     * create files with exact permissions, without modification by
     * the umask.
     */
    umask(000);

    /* Prevent fire-and-forget children from becoming zombies.
     * If we should need to wait() for some children in the future
     * (as opposed to none right now), double-forking here instead
     * of ignoring SIGCHLD may be the better solution.
     */
    signal(SIGCHLD, SIG_IGN);

    open_devnull_stdio();
    klog_init();

    INFO("starting ueventd\n");

    /* Respect hardware passed in through the kernel cmd line. Here we will look
     * for androidboot.hardware param in kernel cmdline, and save its value in
     * hardware[]. */
    import_kernel_cmdline(0, import_kernel_nv);

    get_hardware_name(hardware, &revision);

    ueventd_parse_config_file("/ueventd.rc");

    snprintf(tmp, sizeof(tmp), "/ueventd.%s.rc", hardware);
    ueventd_parse_config_file(tmp);

    device_init();

    ufd.events = POLLIN;
    ufd.fd = get_device_fd();

    while(1) {
        ufd.revents = 0;
        nr = poll(&ufd, 1, -1);
        if (nr <= 0)
            continue;
        if (ufd.revents == POLLIN)
               handle_device_fd();
    }
}
Ejemplo n.º 8
0
int ueventd_main(int argc, char **argv)
{
    struct pollfd ufd;
    int nr;
    char tmp[32];

    /*
     * init sets the umask to 077 for forked processes. We need to
     * create files with exact permissions, without modification by
     * the umask.
     */
    umask(000);

    /* Prevent fire-and-forget children from becoming zombies.
     * If we should need to wait() for some children in the future
     * (as opposed to none right now), double-forking here instead
     * of ignoring SIGCHLD may be the better solution.
     */
    signal(SIGCHLD, SIG_IGN);

    open_devnull_stdio();
    klog_init();
#if LOG_UEVENTS
    /* Ensure we're at a logging level that will show the events */
    if (klog_get_level() < KLOG_INFO_LEVEL) {
        klog_set_level(KLOG_INFO_LEVEL);
    }
#endif

    union selinux_callback cb;
    cb.func_log = log_callback;
    selinux_set_callback(SELINUX_CB_LOG, cb);

    INFO("starting ueventd\n");

    /* Respect hardware passed in through the kernel cmd line. Here we will look
     * for androidboot.hardware param in kernel cmdline, and save its value in
     * hardware[]. */
    import_kernel_cmdline(0, import_kernel_nv);

    get_hardware_name(hardware, &revision);

    ueventd_parse_config_file("/ueventd.rc");

    snprintf(tmp, sizeof(tmp), "/ueventd.%s.rc", hardware);
    ueventd_parse_config_file(tmp);

    device_init();

    ufd.events = POLLIN;
    ufd.fd = get_device_fd();

    while(1) {
        ufd.revents = 0;
        nr = poll(&ufd, 1, -1);
        if (nr <= 0)
            continue;
        if (ufd.revents & POLLIN)
               handle_device_fd();
    }
}