diff options
Diffstat (limited to 'libudev/libudev-device.c')
| -rw-r--r-- | libudev/libudev-device.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/libudev/libudev-device.c b/libudev/libudev-device.c index 66f806316f..16bee19dff 100644 --- a/libudev/libudev-device.c +++ b/libudev/libudev-device.c @@ -63,6 +63,7 @@ struct udev_device { struct udev_list_node sysattr_list; struct udev_list_node tags_list; unsigned long long int seqnum; + unsigned long long int usec_initialized; int event_timeout; int timeout; int devlink_priority; @@ -284,6 +285,9 @@ int udev_device_read_db(struct udev_device *udev_device) case 'W': udev_device_set_watch_handle(udev_device, atoi(val)); break; + case 'I': + udev_device_set_usec_initialized(udev_device, strtoull(val, NULL, 10)); + break; } } fclose(f); @@ -1095,6 +1099,44 @@ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) } /** + * udev_device_get_usec_since_initialized: + * @udev_device: udev device + * + * Return the number of microseconds passed since udev set up the + * device for the first time. + * + * This is only implemented for devices with need to store properties + * in the udev database. All other devices return 0 here. + * + * Returns: the number of microseconds since the device was first seen. + **/ +unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device) +{ + unsigned long long now; + + if (udev_device == NULL) + return 0; + if (!udev_device->info_loaded) + udev_device_read_db(udev_device); + if (udev_device->usec_initialized == 0) + return 0; + now = usec_monotonic(); + if (now == 0) + return 0; + return now - udev_device->usec_initialized; +} + +unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device) +{ + return udev_device->usec_initialized; +} + +void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized) +{ + udev_device->usec_initialized = usec_initialized; +} + +/** * udev_device_get_sysattr_value: * @udev_device: udev device * @sysattr: attribute name @@ -1318,7 +1360,7 @@ const char *udev_device_get_id_filename(struct udev_device *udev_device) * device node permissions and context, or has renamed a network * device. * - * For now, this is only implemented for devices with a device node + * This is only implemented for devices with a device node * or network interfaces. All other devices return 1 here. * * Returns: 1 if the device is set up. 0 otherwise. |