Date: Tue, 22 Sep 2020 15:48:15 -0500 From: Kyle Evans <kevans@freebsd.org> To: Alan Somers <asomers@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-head <svn-src-head@freebsd.org> Subject: Re: svn commit: r365643 - head/bin/cp Message-ID: <CACNAnaGXCt=PezNX-5KU7xTk%2By-um37p8sk1c1KUEc4ywDQ5uQ@mail.gmail.com> In-Reply-To: <202009112049.08BKnavL032212@repo.freebsd.org> References: <202009112049.08BKnavL032212@repo.freebsd.org>
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On Fri, Sep 11, 2020 at 3:49 PM Alan Somers <asomers@freebsd.org> wrote: > > Author: asomers > Date: Fri Sep 11 20:49:36 2020 > New Revision: 365643 > URL: https://svnweb.freebsd.org/changeset/base/365643 > > Log: > cp: fall back to read/write if copy_file_range fails > > Even though copy_file_range has a file-system agnostic version, it still > fails on devfs (perhaps because the file descriptor is non-seekable?) In > that case, fallback to old-fashioned read/write. Fixes > "cp /dev/null /tmp/null" > Hi, Any objection to adding a quick UPDATING entry for this? I'm seeing occasional reports of this breakage as recent as today on IRC from folks that were a little bit thrown off by this because it throws up fairly far into the build and looks like a stand build regression instead of a cp regression. Thanks, Kyle Evans
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