size_t size;
value[0] = '\0';
+ /* read the value specified by [usb/]*/
util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
- val = udev_device_get_sysattr_value(event->dev, attr);
- if (val != NULL)
- util_strlcpy(value, val, sizeof(value));
+ /* try to read attribute of the current device */
+ if (value[0] == '\0') {
+ val = udev_device_get_sysattr_value(event->dev, attr);
+ if (val != NULL)
+ util_strlcpy(value, val, sizeof(value));
+ }
- /* try the current device, other matches may have selected */
+ /* try to read the attribute of the parent device, other matches have selected */
if (value[0] == '\0' && event->dev_parent != NULL && event->dev_parent != event->dev) {
val = udev_device_get_sysattr_value(event->dev_parent, attr);
if (val != NULL)
util_strlcpy(program, cmd, sizeof(program));
udev_event_apply_format(event, program, sizeof(program));
+ if (event->trace)
+ fprintf(stderr, "run %s (%llu) '%s'\n",
+ udev_device_get_syspath(event->dev),
+ udev_device_get_seqnum(event->dev),
+ program);
envp = udev_device_get_properties_envp(event->dev);
if (util_run_program(event->udev, program, envp, NULL, 0, NULL) != 0) {
if (!udev_list_entry_get_flag(list_entry))