linux-kernel - Re: [PATCH 07/11] fs: Allow CAP_SYS_ADMIN in s_user

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Message-ID: <CAOssrKeSTY1pAhpmegFWdGh7irNbT4veG5JaYFj8Q1JjMynadw@mail.gmail.com>
Date:   Wed, 14 Feb 2018 13:28:12 +0100
From:   Miklos Szeredi <mszeredi@...hat.com>
To:     Dongsu Park <dongsu@...volk.io>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Linux Containers <containers@...ts.linux-foundation.org>,
        Alban Crequy <alban@...volk.io>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        Sargun Dhillon <sargun@...gun.me>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH 07/11] fs: Allow CAP_SYS_ADMIN in s_user_ns to freeze and
 thaw filesystems

On Fri, Dec 22, 2017 at 3:32 PM, Dongsu Park <dongsu@...volk.io> wrote:
> From: Seth Forshee <seth.forshee@...onical.com>
>
> The user in control of a super block should be allowed to freeze
> and thaw it. Relax the restrictions on the FIFREEZE and FITHAW
> ioctls to require CAP_SYS_ADMIN in s_user_ns.

Why is this required for unprivileged fuse?

Fuse doesn't support freeze, so this seems to make no sense in the
context of this patchset.

Thanks,
Miklos