svn commit: r365643 - head/bin/cp

[Alan Somers]

On Tue, Sep 22, 2020 at 2:48 PM Kyle Evans <kevans at freebsd.org> wrote:

> On Fri, Sep 11, 2020 at 3:49 PM Alan Somers <asomers at 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
>

No objection.  Can you suggest the proper wording?