Re: [PATCH] bhyve: implement virtio-9p support

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On 10/8/20 3:18 PM, Roman Bogorodskiy wrote:
   Roman Bogorodskiy wrote:

Recently virtio-9p support was added to bhyve.

On the host side it looks this way:

   bhyve .... -s 25:0,virtio-9p,sharename=/path/to/shared/dir

It could also have ",ro" suffix to make share read-only.

In the Linux guest, this share is mounted with:

   mount -t 9p sharename /mnt/sharename

In the guest user will see the same permissions and ownership
information for this directory as on the host. No uid/gid remapping is
supported, so those could resolve to wrong user or group names.

The same applies to the other side: chowning/chmodding in the guest will
set specified ownership and permissions on the host.

In libvirt domain XML it's modeled using the 'filesystem' element:

   <filesystem type='mount'>
     <source dir='/path/to/shared/dir'/>
     <target dir='sharename'/>
   </filesystem>

Optional 'readonly' sub-element enables read-only mode.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@xxxxxxxxx>
---
  src/bhyve/bhyve_capabilities.c                | 14 ++++
  src/bhyve/bhyve_capabilities.h                |  1 +
  src/bhyve/bhyve_command.c                     | 72 +++++++++++++++++++
  src/bhyve/bhyve_device.c                      | 10 +++
  src/libvirt_private.syms                      |  1 +
  .../bhyvexml2argv-fs-9p-readonly.args         | 10 +++
  .../bhyvexml2argv-fs-9p-readonly.ldargs       |  3 +
  .../bhyvexml2argv-fs-9p-readonly.xml          | 28 ++++++++
  ...exml2argv-fs-9p-unsupported-accessmode.xml | 27 +++++++
  ...bhyvexml2argv-fs-9p-unsupported-driver.xml | 28 ++++++++
  .../bhyvexml2argv-fs-9p.args                  | 10 +++
  .../bhyvexml2argv-fs-9p.ldargs                |  3 +
  .../bhyvexml2argvdata/bhyvexml2argv-fs-9p.xml | 27 +++++++
  tests/bhyvexml2argvtest.c                     |  9 ++-
  .../bhyvexml2xmlout-fs-9p.xml                 | 38 ++++++++++
  tests/bhyvexml2xmltest.c                      |  1 +
  16 files changed, 281 insertions(+), 1 deletion(-)
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-readonly.args
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-readonly.ldargs
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-readonly.xml
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-unsupported-accessmode.xml
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-unsupported-driver.xml
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p.args
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p.ldargs
  create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p.xml
  create mode 100644 tests/bhyvexml2xmloutdata/bhyvexml2xmlout-fs-9p.xml

This is missing
tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-unsupported-type.xml

It doesn't seem to be important enough to justify sending v2 just
because of it, so it's here:

https://gitlab.com/rbogorodskiy/libvirt/-/blob/bhyve-9p/tests/bhyvexml2argvdata/bhyvexml2argv-fs-9p-unsupported-type.xml

Yep, with this squashed in:

Reviewed-by: Michal Privoznik <mprivozn@xxxxxxxxxx>

Michal




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