GNU bug report logs - #13028
inplace: new program

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From: Pádraig Brady <P <at> draigBrady.com>
To: Reuben Thomas <rrt <at> sc3d.org>
Cc: 13028 <at> debbugs.gnu.org, "David A. Wheeler" <dwheeler <at> dwheeler.com>
Subject: bug#13028: inplace
Date: Mon, 12 Sep 2022 12:57:07 +0100

On 12/09/2022 09:07, Reuben Thomas wrote:
> On Mon, 16 May 2016 at 15:42, Pádraig Brady <P <at> draigbrady.com <mailto:P <at> draigbrady.com>> wrote:
> 
> 
>     I just don't have the time at present to complete this.
> 
>     I did implement ACID file replacement using POSIX APIs a while ago in:
>     https://github.com/pixelb/crudini <https://github.com/pixelb/crudini>
>     The commit messages there have details on fsync()ing requirements etc.
> 
>     Implementation in C in coreutils could also use other APIs where available
>     like renameat2(..., RENAME_EXCHANGE) and exchangedata() etc.
>     I noticed XFS_IOC_SWAPEXT but that's currently hardcoded
>     to support only same sized replacements (for defragment apps).
>     I was thinking of providing a wrapper for exchangedata() in gnulib,
>     which could be leveraged where available or falling back to
>     the current POSIX APIs.
> 
> 
> Did you get any further? I was prompted to look up this thread by a deprecation message for "tempfile" from Victor Porton's "inplace" script, which I still use!

Not yet unfortunately

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