* Add {e,s,fs}{u,g}id to KDBUS_ITEM_CREDS, so users have a way to
get more fine-grained credential information.
+ * Removed KDBUS_CMD_CANCEL. The interface was not usable from
+ threaded userspace implementation due to inherit races. Instead,
+ add an item type KDBUS_ITEM_SIGMASK to store a sigmask that is
+ set before the sync SEND ioctl puts the task to sleep, and restore
+ it afterwards, similar to ppoll().
+
* Dropped startttime from KDBUS_ITEM_PIDS
* Restrict names of custom endpoints to names with a "<uid>-" prefix,