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From: "Robert White" <rwhite@casabyte.com>
To: "'Jesse Pollard'" <jesse@cats-chateau.net>,
       "'Florian Weimer'" <fw@deneb.enyo.de>
Cc: <Valdis.Kletnieks@vt.edu>, "'Daniel Gryniewicz'" <dang@fprintf.net>,
       "'linux-kernel mailing list'" <linux-kernel@vger.kernel.org>
Subject: RE: OT: why no file copy() libc/syscall ??
Date: Wed, 26 Nov 2003 18:40:29 -0800
Organization: Casabyte, Inc.
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(Among the other N objections, add things like the lack of any sort of
control or option parameters)
...
N += 1: Sparse Copying (e.g. seeking past blocks of zeros)
N += 1: Unlink or overwrite or what?
N += 1: In-Kernel locking and resolution for pages that are mandatory
lock(ed)
N += 1: No fine-grained control for concurrency issues (multiple writers)

Start with doing a cp --help and move on from there for an unbounded list of
issues that sys_copy(int fd1, int fd2) does not even come close to
addressing.