From nobody Sun May 17 21:47:00 2026 X-Original-To: current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4gJZKJ4Cm1z6d5jr for ; Sun, 17 May 2026 21:47:16 +0000 (UTC) (envelope-from kib@freebsd.org) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4gJZKH6MYGz3dcH; Sun, 17 May 2026 21:47:15 +0000 (UTC) (envelope-from kib@freebsd.org) Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=freebsd.org (policy=none); spf=softfail (mx1.freebsd.org: 2001:470:d5e7:1::1 is neither permitted nor denied by domain of kib@freebsd.org) smtp.mailfrom=kib@freebsd.org Received: from tom.home (kib@localhost [127.0.0.1] (may be forged)) by kib.kiev.ua (8.18.1/8.18.1) with ESMTP id 64HLl1td030086; Mon, 18 May 2026 00:47:04 +0300 (EEST) (envelope-from kib@freebsd.org) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua 64HLl1td030086 Received: (from kostik@localhost) by tom.home (8.18.1/8.18.1/Submit) id 64HLl0wQ030085; Mon, 18 May 2026 00:47:00 +0300 (EEST) (envelope-from kib@freebsd.org) X-Authentication-Warning: tom.home: kostik set sender to kib@freebsd.org using -f Date: Mon, 18 May 2026 00:47:00 +0300 From: Konstantin Belousov To: current@freebsd.org Cc: gerald@freebsd.org Subject: ntsync(9) Message-ID: List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham autolearn_force=no version=4.0.2 X-Spam-Checker-Version: SpamAssassin 4.0.2 (2025-08-27) on tom.home X-Spamd-Result: default: False [-3.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; DMARC_POLICY_SOFTFAIL(0.10)[freebsd.org : No valid SPF, No valid DKIM,none]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; FREEFALL_USER(0.00)[kib]; ARC_NA(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US]; R_SPF_SOFTFAIL(0.00)[~all]; R_DKIM_NA(0.00)[]; MLMMJ_DEST(0.00)[current@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MISSING_XM_UA(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_TLS_LAST(0.00)[]; HAS_XAW(0.00)[] X-Spamd-Bar: -- X-Rspamd-Queue-Id: 4gJZKH6MYGz3dcH Hello, since the recent hype around ntsync driver for Linux, written no less than 'Linux incorporates Windows features', I decided that FreeBSD should support the trend. Useful technical summary is available at https://fedoraproject.org/wiki/Changes/NTSYNC-Contained Apparently, there is some documentation https://docs.kernel.org/userspace-api/ntsync.html (which mis-spells ioctl names), and the test suite that seems to be more useful. FreeBSD port of the test suite can be found at https://github.com/kostikbel/freebsd-ntsync-test and the FreeBSD driver implementation at https://reviews.freebsd.org/D57038 This is a clean-room implementation, I did not read GPL-ed code. I used the documentation as reference, and ensured that the test suite passes fully. Amusingly, there was one test that contained bug in the check.