Re: [Virtio-fs] [PATCH for-5.1 0/3] virtiofsd: allow virtiofsd to run in a container

[Vivek Goyal]

On Wed, Jul 22, 2020 at 02:02:03PM +0100, Stefan Hajnoczi wrote:
> Container runtimes handle namespace setup and remove privileges needed by
> virtiofsd to perform sandboxing. Luckily the container environment already
> provides most of the sandbox that virtiofsd needs for security.
> 
> Introduce a new "virtiofsd -o chroot" option that uses chroot(2) instead of
> namespaces. This option allows virtiofsd to work inside a container.
> 
> Please see the individual patches for details on the changes and security
> implications.
> 
> Given that people are starting to attempt running virtiofsd in containers I
> think this should go into QEMU 5.1.

Hi Stefan,

I have written a document to help with testing virtiofs with any changes.

https://github.com/rhvgoyal/misc/blob/master/virtiofs-tests/virtio-fs-testing-requirement.txt

Will be good to run some of these tests to make sure there are no
regressions due to these changes.

Thanks
Vivek

> 
> Stefan Hajnoczi (3):
>   virtiofsd: drop CAP_DAC_READ_SEARCH
>   virtiofsd: add container-friendly -o chroot sandboxing option
>   virtiofsd: probe unshare(CLONE_FS) and print an error
> 
>  tools/virtiofsd/fuse_virtio.c    | 13 +++++++++
>  tools/virtiofsd/helper.c         |  3 +++
>  tools/virtiofsd/passthrough_ll.c | 45 +++++++++++++++++++++++++++++---
>  3 files changed, 58 insertions(+), 3 deletions(-)
> 
> -- 
> 2.26.2
> 
> 
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