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From: Chirantan Ekbote <chirantan@chromium.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
	Stephen Smalley <stephen.smalley.work@gmail.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Linux FS Devel <linux-fsdevel@vger.kernel.org>,
	virtio-fs-list <virtio-fs@redhat.com>,
	Dylan Reid <dgreid@chromium.org>,
	Suleiman Souhlal <suleiman@chromium.org>,
	fuse-devel <fuse-devel@lists.sourceforge.net>,
	SElinux list <selinux@vger.kernel.org>
Subject: Re: [RESEND] [PATCHv4 1/2] uapi: fuse: Add FUSE_SECURITY_CTX
Date: Tue, 15 Jun 2021 18:35:21 +0900	[thread overview]
Message-ID: <CAJFHJrpu9vewcD2er6oB_xwtF4Pc-njkRaA7rfJwsTvw5Fi2og@mail.gmail.com> (raw)
In-Reply-To: <20210614212808.GD869400@redhat.com>

Hi Vivek,

On Tue, Jun 15, 2021 at 6:28 AM Vivek Goyal <vgoyal@redhat.com> wrote:
>
> On Wed, Jul 22, 2020 at 06:07:57PM +0900, Chirantan Ekbote wrote:
> > Add the FUSE_SECURITY_CTX flag for the `flags` field of the
> > fuse_init_out struct.  When this flag is set the kernel will append the
> > security context for a newly created inode to the request (create,
> > mkdir, mknod, and symlink).  The server is responsible for ensuring that
> > the inode appears atomically with the requested security context.
> >
> > For example, if the server is backed by a "real" linux file system then
> > it can write the security context value to
> > /proc/thread-self/attr/fscreate before making the syscall to create the
> > inode.
> >
> > Signed-off-by: Chirantan Ekbote <chirantan@chromium.org>
>
> Hi Chirantan,
>
> I am wondering what's the status of this work now. Looks like it
> was not merged.
>
> We also need the capability to set selinux security xattrs on newly
> created files in virtiofs.
>
> Will you be interested in reviving this work and send patches again
> and copy the selinux as well as linux security module list
> (linux-security-module@vger.kernel.org) as suggested by casey.
>

Not really.  We have our own local solution for this (see below) so if
you or someone else wants to pick it up, please go ahead.

> How are you managing in the meantime. Carrying patches in your own
> kernel?
>

Kind of. This patch series changes the protocol and the feature bit we
were using was claimed by FUSE_SUBMOUNTS instead so carrying it
locally is not really viable long term.  Instead we're carrying a
patch similar to the original RFC patch that doesn't change the
protocol [1].

Chirantan

[1]: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2581172

  reply	other threads:[~2021-06-15  9:35 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-22  9:07 Chirantan Ekbote
2020-07-22  9:07 ` [RESEND] [PATCHv4 2/2] fuse: Call security hooks on new inodes Chirantan Ekbote
2020-08-14  5:20 ` [RESEND] [PATCHv4 1/2] uapi: fuse: Add FUSE_SECURITY_CTX Chirantan Ekbote
2020-08-14 15:44   ` Casey Schaufler
2021-06-14 21:28 ` Vivek Goyal
2021-06-15  9:35   ` Chirantan Ekbote [this message]
2021-06-15 13:32     ` Vivek Goyal

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