NAME

       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

SYNOPSIS

       #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);

RETURN 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.

SEE ALSO

       udev_new(3), udev_device_new_from_syspath(3), udev_device_get_syspath(3), udev_enumerate_new(3),
       udev_monitor_new_from_netlink(3), udev_list_entry(3), systemd(1),