GNU bug report logs - #51857
cross-filesystem copying broken on macOS with coreutils >= 9.0

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Message #38 received at 51857 <at> debbugs.gnu.org (full text, mbox):

From: Sudhip Nashi <sudhipnashi <at> icloud.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 51857 <at> debbugs.gnu.org, Gnulib bugs <bug-gnulib <at> gnu.org>,
 Pádraig Brady <P <at> draigbrady.com>,
 Cameron Katri <me <at> cameronkatri.com>
Subject: Re: bug#51857: cross-filesystem copying broken on macOS with
 coreutils >= 9.0
Date: Mon, 15 Nov 2021 17:46:14 -0600

Awesome, thanks for the quick response! I’ll give this a go and let you know the results.

> On Nov 15, 2021, at 5:41 PM, Paul Eggert <eggert <at> cs.ucla.edu> wrote:
> 
> On 11/15/21 10:37, Sudhip Nashi wrote:
>> Turns out lseek is broken (or at least works differently) on macOS as well (https://lists.gnu.org/archive/html/bug-gnulib/2018-09/msg00054.html). Funny coincidence! I’ll take a better look later this week if I can and try to see what the exact problem is.
> 
> Thanks, I think I see the problem now.
> 
> Eventually macOS will likely get fixed to work around this lseek+SEEK_DATA incompatibility (as FreeBSD, Solaris, etc. all do things the Linux way and that's what I think will appear in the next POSIX), but in the meantime I attempted to work around the portability issue by installing the attached patch into Gnulib, and by syncing coreutils to the latest Gnulib.
> 
> I don't use macOS so have not tested this. Please give it a try, either by building from bleeding-edge coreutils on Savannah, or by building from the tarball temporarily here:
> 
> https://www.cs.ucla.edu/~eggert/coreutils-9.0.26-0f4d9.tar.gz
> 
> Thanks.<0001-lseek-port-around-macOS-SEEK_DATA-glitch.patch>

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