linux-ext4 - Re: [RFD] Common userspace tool for fscypto

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Date:   Mon, 24 Oct 2016 13:59:57 +0200
From:   Richard Weinberger <richard@....at>
To:     Michael Halcrow <mhalcrow@...gle.com>
Cc:     linux-fsdevel <linux-fsdevel@...r.kernel.org>, kzak@...hat.com,
        Theodore Ts'o <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Eric Biggers <ebiggers@...gle.com>,
        David Gstir <david@...ma-star.at>,
        Ext4 Developers List <linux-ext4@...r.kernel.org>,
        linux-f2fs-devel@...ts.sourceforge.net,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFD] Common userspace tool for fscypto

Michael,

On 19.10.2016 19:36, Michael Halcrow wrote:
> On Wed, Oct 19, 2016 at 4:35 AM, Richard Weinberger <richard@....at> wrote:
>> Hi!
>>
>> Since file level encryption has more than one user, currently ext4, f2fs and soon ubifs
>> it would be nice to have a single tool to control fscrypto from userspace.
>>
>> For ext4 we have already at least two tools, one as part of e2fsprogs and another
>> one on github[0]. IMHO the latter one is much more user friendly and intuitive to use.
>> I as unable to find the userspace tool for f2fs.
>>
>> That said, what about implementing such a tool as part of util-linux to control
>> fscrypto? We (David and I) would volunteer.
> 
> While discussing several changes we have staged for release (we're
> trying to minimize churn by batching a large set of format changes all
> at once), we've recently recognized this need on my team and were
> planning on starting work on exactly what you propose.

Can you please some details?
Will it be GPL? Part of util-linux?
What features does it have?
I hope more than just being a wrapper to the ioctls().

Thanks,
//richard

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