C++ (Cpp) sysfs_get_class_devices Examples

Example #1

File: libbridge_init.c Project: houzhenggang/ralink_sdk

/*
 * New interface uses sysfs to find bridges
 */
static int new_foreach_bridge(int (*iterator)(const char *name, void *),
                              void *arg)
{
    struct sysfs_class_device *dev;
    struct dlist *devlist;
    int count = 0;

    if (!br_class_net) {
        dprintf("no class /sys/class/net\n");
        return -EOPNOTSUPP;
    }

    devlist = sysfs_get_class_devices(br_class_net);
    if (!devlist) {
        dprintf("Can't read devices from sysfs\n");
        return -errno;
    }

    dlist_for_each_data(devlist, dev, struct sysfs_class_device) {
        if (isbridge(dev)) {
            ++count;
            if (iterator(dev->name, arg))
                break;
        }
    }

    return count;
}

Example #2

File: sysfs_class_block.c Project: neufbox/misc

int main(int argc, char *argv[])
{
	struct sysfs_class *sf_class;
	struct sysfs_device *sf_dev;
	struct sysfs_class_device *sf_cdev;
	struct dlist *sf_cdev_list = NULL;
	char buffer[64];
	int port;

	struct sysfs_attribute *sf_attr;
	struct sysfs_attribute *sf_part;
	struct dlist *sf_part_list = NULL;

	sf_class = sysfs_open_class("block");

	if (sf_class != NULL)
	{
		sf_cdev_list = sysfs_get_class_devices(sf_class);
		if (sf_cdev_list != NULL)
		{
			dlist_for_each_data(sf_cdev_list, sf_cdev, struct sysfs_class_device)
			{
				sf_dev = sysfs_get_classdev_device(sf_cdev);
				if (sf_dev != NULL)
				{
					port = *(strstr(sf_dev->path, "/usb1/") + 8) - 48;
					if ((port != 1) && (port != 2))
					{
						port = -1;
					}

					printf("%s, USB port %d\n", sf_cdev->name, port);

					/* size */
					snprintf(buffer, 64, "%s/size", sf_cdev->path);

					sf_attr = sysfs_open_attribute(buffer);
					if (sf_attr != NULL)
					{
						if (sysfs_read_attribute(sf_attr) == 0)
						{
							printf("size: %s", sf_attr->value);
						}
						sysfs_close_attribute(sf_attr);
					}

					/* vendor */
					snprintf(buffer, 64, "%s/device/vendor", sf_cdev->path);

					sf_attr = sysfs_open_attribute(buffer);
					if (sf_attr != NULL)
					{
						if (sysfs_read_attribute(sf_attr) == 0)
						{
							printf("vendor: %s", sf_attr->value);
						}
						sysfs_close_attribute(sf_attr);
					}

					/* model */
					snprintf(buffer, 64, "%s/device/model", sf_cdev->path);

					sf_attr = sysfs_open_attribute(buffer);
					if (sf_attr != NULL)
					{
						if (sysfs_read_attribute(sf_attr) == 0)
						{
							printf("model: %s", sf_attr->value);
						}
						sysfs_close_attribute(sf_attr);
					}

					sf_part_list = sysfs_open_directory_list(sf_cdev->path);
					if (sf_part_list != NULL)
					{
						dlist_for_each_data(sf_part_list, sf_part, struct sysfs_attribute)
						{
							if (strncmp("queue", (char *) sf_part, 5) != 0)
							{
								snprintf(buffer, 64, "%s/%s/size", sf_cdev->path, sf_part);

								sf_attr = sysfs_open_attribute(buffer);
								if (sf_attr != NULL)
								{
									if (sysfs_read_attribute(sf_attr) == 0)
									{
										printf("%s - size: %s", sf_part, sf_attr->value);
									}
									sysfs_close_attribute(sf_attr);
								}
							}
						}
					}