From owner-svn-src-head@freebsd.org Fri Sep 8 12:14:28 2017 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D682BE14DD8; Fri, 8 Sep 2017 12:14:28 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from mail.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 8A70071E17; Fri, 8 Sep 2017 12:14:28 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from John-Baldwins-MacBook-Pro-2.local (unknown [50.235.236.73]) by mail.baldwin.cx (Postfix) with ESMTPSA id F256A10A7DB; Fri, 8 Sep 2017 08:14:26 -0400 (EDT) Subject: Re: svn commit: r323254 - head/sys/compat/freebsd32 To: Maxim Sobolev , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org References: <201709070429.v874Tvom033960@repo.freebsd.org> From: John Baldwin Message-ID: <6d00a409-2be8-fc15-b68f-993d97366aab@FreeBSD.org> Date: Fri, 8 Sep 2017 08:14:26 -0400 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <201709070429.v874Tvom033960@repo.freebsd.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.4.3 (mail.baldwin.cx); Fri, 08 Sep 2017 08:14:27 -0400 (EDT) X-Virus-Scanned: clamav-milter 0.99.2 at mail.baldwin.cx X-Virus-Status: Clean X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Sep 2017 12:14:29 -0000 On 9/7/17 12:29 AM, Maxim Sobolev wrote: > Author: sobomax > Date: Thu Sep 7 04:29:57 2017 > New Revision: 323254 > URL: https://svnweb.freebsd.org/changeset/base/323254 > > Log: > In the recvmsg32() system call iterate over returned structure(s) > and convert any messages of types SCM_BINTIME, SCM_TIMESTAMP, > SCM_REALTIME and SCM_MONOTONIC from 64-bit to its 32-bit > representation. Otherwise we either run out of user-supplied > buffer to copy those out resulting in the MSG_CTRUNC or simply > return values that the userland 32-bit code is not going > to parse correctly. This fixes at least two regression tests > failing to function properly in 32-bit compat mode: > > tools/regression/sockets/udp_pingpong > tools/regression/sockets/unix_cmsg > > PR: kern/222039 > MFC after: 30 days Is this correct on !amd64? Other 32-bit platforms use a 64-bit time_t (note the time32_t type defined earlier in freebsd32.h). struct bintime32 should use time32_t for the seconds field, not uint32_t. I think that will be sufficient to make this correct on !amd64 (it also means that bintime32 == bintime on !amd64 so you could perhaps use a simpler BT_CP for !amd64, but the existing one is probably ok). -- John Baldwin