[libvirt PATCHv2 07/10] qemu: validate virtiofs filesystems
Peter Krempa
pkrempa at redhat.com
Fri Jan 24 08:17:13 UTC 2020
On Thu, Jan 23, 2020 at 18:46:08 +0100, Ján Tomko wrote:
> Reject unsupported configurations.
>
> Signed-off-by: Ján Tomko <jtomko at redhat.com>
> ---
> src/qemu/qemu_domain.c | 33 +++++++++++++++++++++++++++++++--
> 1 file changed, 31 insertions(+), 2 deletions(-)
>
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index eb8e82b545..4db0075b89 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -8276,8 +8276,37 @@ qemuDomainDeviceDefValidateFS(virDomainFSDefPtr fs,
> return -1;
>
> case VIR_DOMAIN_FS_DRIVER_TYPE_VIRTIOFS:
> - /* TODO: vhost-user-fs-pci */
> - return 0;
> + if (!fs->binary) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("missing virtiofs binary"));
"missing virtiofs binary path" perhaps?
Also the schema documents that the path is optional and the
documentation never mentions that the path must be provided. I also
didn't find any filling of a default, thus one of these is wrong.
> + return -1;
> + }
> + if (fs->accessmode != VIR_DOMAIN_FS_ACCESSMODE_PASSTHROUGH) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("virtiofs only supports passthrough accessmode"));
> + return -1;
> + }
> + if (fs->wrpolicy != VIR_DOMAIN_FS_WRPOLICY_DEFAULT) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("virtiofs does not support wrpolicy"));
> + return -1;
> + }
> + if (fs->model != VIR_DOMAIN_FS_MODEL_DEFAULT) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("virtiofs does not support model"));
> + return -1;
> + }
> + if (fs->format != VIR_STORAGE_FILE_NONE) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("virtiofs does not support format"));
> + return -1;
> + }
The schema should also reject this.
> + if (def->mem.access != VIR_DOMAIN_MEMORY_ACCESS_SHARED) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("virtiofs requires shared memory"));
> + return -1;
> + }
> + break;
>
> case VIR_DOMAIN_FS_DRIVER_TYPE_LAST:
> default:
Except for the issue with the path to the virtiofs binary this patch
looks okay.
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