static void
do_list_local ()
{
struct udev *udev;
struct udev_enumerate *enumerate;
struct udev_list_entry *devices, *dev_list_entry;
struct udev_device *dev;
const gchar *path;
const gchar *idVendor;
const gchar *idProduct;
const gchar *bConfValue;
const gchar *bNumIntfs;
const gchar *busid;
/* Create libudev context. */
udev = udev_new ();
/* Create libudev device enumeration. */
enumerate = udev_enumerate_new (udev);
/* Take only USB devices that are not hubs and do not have
* the bInterfaceNumber attribute, i.e. are not interfaces.
*/
udev_enumerate_add_match_subsystem (enumerate, "usb");
udev_enumerate_add_nomatch_sysattr (enumerate, "bDeviceClass", "09");
udev_enumerate_add_nomatch_sysattr (enumerate, "bInterfaceNumber", NULL);
udev_enumerate_scan_devices (enumerate);
devices = udev_enumerate_get_list_entry (enumerate);
/* Show information about each device. */
udev_list_entry_foreach (dev_list_entry, devices) {
path = udev_list_entry_get_name (dev_list_entry);
dev = udev_device_new_from_syspath (udev, path);
/* Get device information. */
idVendor = udev_device_get_sysattr_value (dev, "idVendor");
idProduct = udev_device_get_sysattr_value (dev, "idProduct");
bConfValue = udev_device_get_sysattr_value (dev, "bConfigurationValue");
bNumIntfs = udev_device_get_sysattr_value (dev, "bNumInterfaces");
busid = udev_device_get_sysname (dev);
if (!idVendor || !idProduct || !bConfValue || !bNumIntfs) {
g_printerr ("problem getting device attributes: %s\n",
g_strerror (errno));
break;
}
g_print (" - busid %s (%.4s:%.4s)\n\n", busid, idVendor, idProduct);
udev_device_unref (dev);
}
udevGetDevices(struct udev *udev, virUdevStatus status)
{
struct udev_enumerate *enumerate;
/* Create a new enumeration to create a list */
enumerate = udev_enumerate_new(udev);
if (!enumerate)
return NULL;
/* Enumerate all network subsystem devices */
udev_enumerate_add_match_subsystem(enumerate, "net");
/* Ignore devices that are part of a bridge */
udev_enumerate_add_nomatch_sysattr(enumerate, "brport/state", NULL);
/* State of the device */
switch (status) {
case VIR_UDEV_IFACE_ACTIVE:
udev_enumerate_add_match_sysattr(enumerate, "operstate", "up");
break;
case VIR_UDEV_IFACE_INACTIVE:
udev_enumerate_add_match_sysattr(enumerate, "operstate", "down");
break;
case VIR_UDEV_IFACE_ALL:
break;
}
/* We don't want to see the TUN devices that QEMU creates for other guests
* running on this machine. By saying nomatch NULL, we just are getting
* devices without the tun_flags sysattr.
*/
udev_enumerate_add_nomatch_sysattr(enumerate, "tun_flags", NULL);
return enumerate;
}
