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From: Richard Weinberger <richard.weinberger@gmail.com>
Date: Tue, 1 May 2018 13:04:36 +0200
Message-ID: <CAFLxGvxpe78WhrEKcKRt5XRBMtT-mZUe9Bm=sQsn8-f1TnX0eQ@mail.gmail.com>
Subject: Re: Suggested new user link command
To: Tony Wallace <tony@tony.gen.nz>
Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at>,
        LKML <linux-kernel@vger.kernel.org>
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On Tue, May 1, 2018 at 12:58 PM, Tony Wallace <tony@tony.gen.nz> wrote:
> Good point.  But there are gid and uid fields in inode disc record.
>
> https://ext4.wiki.kernel.org/index.php/Ext4_Disk_Layout#Inode_Table
>
> I assume these can be use to ensure that the directory in which it is to
> be placed has permissions to accept the inode.  If that is not the case
> then it would have to be a root only syscall.

Before we dig into details, please come up with a very good use case. :-)
But I'm with Bernd, I don't think it is worth the permissions hassle.

-- 
Thanks,
//richard