linux-kernel - Re: [PATCH v4 0/4] fat: add support for the renameat2 RENAME

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87ilpbtrsm.fsf@mail.parknet.co.jp>
Date:   Wed, 08 Jun 2022 18:42:33 +0900
From:   OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:     Javier Martinez Canillas <javierm@...hat.com>
Cc:     Lennart Poettering <lennart@...ttering.net>,
        linux-kernel@...r.kernel.org, Colin Walters <walters@...bum.org>,
        Peter Jones <pjones@...hat.com>,
        Alberto Ruiz <aruiz@...hat.com>,
        Christian Kellner <ckellner@...hat.com>,
        Chung-Chiang Cheng <cccheng@...ology.com>,
        Muhammad Usama Anjum <usama.anjum@...labora.com>,
        Alexander Larsson <alexl@...hat.com>,
        Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v4 0/4] fat: add support for the renameat2
 RENAME_EXCHANGE flag

Javier Martinez Canillas <javierm@...hat.com> writes:

> Hello OGAWA,
>
> On 6/1/22 19:32, Javier Martinez Canillas wrote:
>> Hello,
>> 
>> The series adds support for the renameat2 system call RENAME_EXCHANGE flag
>> (which allows to atomically replace two paths) to the vfat filesystem code.
>> 
>> There are many use cases for this, but we are particularly interested in
>> making possible for vfat filesystems to be part of OSTree [0] deployments.
>> 
>> Currently OSTree relies on symbolic links to make the deployment updates
>> an atomic transactional operation. But RENAME_EXCHANGE could be used [1]
>> to achieve a similar level of robustness when using a vfat filesystem.
>> 
>> Patch #1 is just a preparatory patch to introduce the RENAME_EXCHANGE
>> support, patch #2 moves some code blocks in vfat_rename() to a set of
>> helper functions, that can be reused by tvfat_rename_exchange() that's
>> added by patch #3 and finally patch #4 adds some kselftests to test it.
>> 
>
> I think that addressed all the issues you pointed out in v3, please let me
> know if there's anything else that is needed for this patch series.
>
> Would these be merged by you or should I ping someone else? I'm not
> that familiar with how filesystem patches make into the mainline tree.

Sorry, it is just the my issue. I was traveling latest week, so is not
reviewing yet. I'll do soon.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>