From owner-dev-commits-src-branches@freebsd.org Sun Feb 28 03:49:05 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5A4FE55F16B; Sun, 28 Feb 2021 03:49:05 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Dp8X122Nzz4pHk; Sun, 28 Feb 2021 03:49:05 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 388681C15; Sun, 28 Feb 2021 03:49:05 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 11S3n5nD024164; Sun, 28 Feb 2021 03:49:05 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 11S3n5UX024163; Sun, 28 Feb 2021 03:49:05 GMT (envelope-from git) Date: Sun, 28 Feb 2021 03:49:05 GMT Message-Id: <202102280349.11S3n5UX024163@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Guangyuan Yang Subject: git: 115ea98aede3 - stable/12 - pwrite(2): add a BUGS section MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: ygy X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: 115ea98aede324e6f0c032a4d481d128df7bc81f Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Feb 2021 03:49:05 -0000 The branch stable/12 has been updated by ygy (doc committer): URL: https://cgit.FreeBSD.org/src/commit/?id=115ea98aede324e6f0c032a4d481d128df7bc81f commit 115ea98aede324e6f0c032a4d481d128df7bc81f Author: Guangyuan Yang AuthorDate: 2021-02-20 08:03:15 +0000 Commit: Guangyuan Yang CommitDate: 2021-02-28 02:58:36 +0000 pwrite(2): add a BUGS section Add a BUGS section about using pwrite(2) when O_APPEND is set on the fd. Submitted by: Ka Ho Ng Reviewed by: gbe, yuripv Differential Revision: https://reviews.freebsd.org/D28372 (cherry picked from commit 504e64af32ba6c62fdcc894a3b1da76061c64796) --- lib/libc/sys/write.2 | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/lib/libc/sys/write.2 b/lib/libc/sys/write.2 index fb70c5e4186b..89b1da7f24d9 100644 --- a/lib/libc/sys/write.2 +++ b/lib/libc/sys/write.2 @@ -28,7 +28,7 @@ .\" @(#)write.2 8.5 (Berkeley) 4/2/94 .\" $FreeBSD$ .\" -.Dd March 30, 2020 +.Dd February 11, 2021 .Dt WRITE 2 .Os .Sh NAME @@ -294,3 +294,17 @@ The .Fn write function appeared in .At v1 . +.Sh BUGS +The +.Fn pwrite +system call appends the file without changing the file offset if +.Dv O_APPEND +is set, contrary to +.St -p1003.1-2008 +where +.Fn pwrite +writes into +.Fa offset +regardless of whether +.Dv O_APPEND +is set.