K 10 svn:author V 5 markj K 8 svn:date V 27 2018-08-04T20:29:58.556860Z K 7 svn:log V 436 Fix the regression test for PR 181741. With r337328, the test hangs becase the sendmsg() call will block until the receive buffer is at least partially drained. Fix the problem by using a non-blocking socket and allowing short writes. Also assert that a SCM_CREDS message was received if one was expected. PR: 181741 MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D16516 END