linux-kernel - [PATCH 0/2] virtio-fs: Add 'file' mount option

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-next>] [day] [month] [year] [list]

Message-ID: <20240709111918.31233-1-hreitz@redhat.com>
Date: Tue,  9 Jul 2024 13:19:16 +0200
From: Hanna Czenczek <hreitz@...hat.com>
To: linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	virtualization@...ts.linux.dev
Cc: Hanna Czenczek <hreitz@...hat.com>,
	Miklos Szeredi <mszeredi@...hat.com>,
	German Maglione <gmaglione@...hat.com>,
	Stefan Hajnoczi <stefanha@...hat.com>,
	Eugenio Pérez <eperezma@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Vivek Goyal <vgoyal@...hat.com>
Subject: [PATCH 0/2] virtio-fs: Add 'file' mount option

Hi,

We want to be able to mount filesystems that just consist of one regular
file via virtio-fs, i.e. no root directory, just a file as the root
node.

While that is possible via FUSE itself (through the 'rootmode' mount
option, which is automatically set by the fusermount help program to
match the mount point's inode mode), there is no virtio-fs option yet
that would allow changing the rootmode from S_IFDIR to S_IFREG.

To do that, this series introduces a new 'file' mount option that does
precisely that.  Alternatively, we could provide the same 'rootmode'
option that FUSE has, but as laid out in patch 1's commit description,
that option is a bit cumbersome for virtio-fs (in a way that it is not
for FUSE), and its usefulness as a more general option is limited.

Hanna Czenczek (2):
  virtio-fs: Add 'file' mount option
  virtio-fs: Document 'file' mount option

 fs/fuse/virtio_fs.c                    | 9 ++++++++-
 Documentation/filesystems/virtiofs.rst | 5 ++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

-- 
2.45.1