%entities; ]> systemd udev_device_has_tag 3 udev_device_has_tag udev_device_get_devlinks_list_entry udev_device_get_properties_list_entry udev_device_get_tags_list_entry udev_device_get_sysattr_list_entry udev_device_get_property_value udev_device_get_sysattr_value udev_device_set_sysattr_value Retrieve or set device attributes #include <libudev.h> struct udev_list_entry *udev_device_get_devlinks_list_entry struct udev_device *udev_device struct udev_list_entry *udev_device_get_properties_list_entry struct udev_device *udev_device struct udev_list_entry *udev_device_get_tags_list_entry struct udev_device *udev_device struct udev_list_entry *udev_device_get_sysattr_list_entry struct udev_device *udev_device const char *udev_device_get_property_value struct udev_device *udev_device const char *key int udev_device_has_tag struct udev_device *udev_device const char *tag const char *udev_device_get_sysattr_value struct udev_device *udev_device const char *sysattr int udev_device_set_sysattr_value struct udev_device *udev_device const char *sysattr const char *value On success, udev_device_get_devlinks_list_entry(), udev_device_get_properties_list_entry(), udev_device_get_tags_list_entry() and udev_device_get_sysattr_list_entry() return a pointer to the first entry of the retrieved list. If that list is empty, or if an error occurred, NULL is returned. On success, udev_device_get_property_value() and udev_device_get_sysattr_value() return a pointer to a constant string of the requested value. On error, NULL is returned. On success, udev_device_set_sysattr_value() returns an integer greater than, or equal to, 0. On failure, a negative error code is returned. On success, udev_device_has_tag() returns 1 or 0, depending on whether the device has the given tag or not. On failure, a negative error code is returned. udev_new3, udev_device_new_from_syspath3, udev_device_get_syspath3, udev_enumerate_new3, udev_monitor_new_from_netlink3, udev_list_entry3, systemd1,