musl - Re: coreutils cp mishandles error return from lchmod

Message-ID: <87ftg7k1at.fsf@oldenburg2.str.redhat.com>
Date: Wed, 22 Jan 2020 15:34:18 +0100
From: Florian Weimer <fweimer@...hat.com>
To: Rich Felker <dalias@...c.org>
Cc: bug-coreutils@....org,  musl@...ts.openwall.com
Subject: Re: coreutils cp mishandles error return from lchmod

* Rich Felker:

> coreutils should be opting to use the system-provided lchmod, which is
> safe, and correctly handling error returns (silently treating
> EOPNOTSUPP as success) rather than as hard errors.

glibc's lchmod always returns ENOSYS (except on Hurd).  I don't know how
lchmod is used in coreutils, but I suspect it is not particularly
useful.

Thanks,
Florian

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