Re: [libvirt PATCH] conf: Restrict use of <portForward> to the passt backend

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On Tue, Apr 18, 2023 at 03:19:45PM +0200, Ján Tomko wrote:
> On a Tuesday in 2023, Andrea Bolognani wrote:
> > That's already the case in practice, but it's a better
> > experience for the user if we reject this configuration
> > outright instead of silently ignoring part of it.
> >
> > Signed-off-by: Andrea Bolognani <abologna@xxxxxxxxxx>
> > ---
> > src/conf/domain_validate.c                    |  9 +++++++++
> > ...t-user-slirp-portforward.x86_64-latest.err |  1 +
> > .../net-user-slirp-portforward.xml            | 20 +++++++++++++++++++
> > tests/qemuxml2argvtest.c                      |  1 +
> > 4 files changed, 31 insertions(+)
> > create mode 100644 tests/qemuxml2argvdata/net-user-slirp-portforward.x86_64-latest.err
> > create mode 100644 tests/qemuxml2argvdata/net-user-slirp-portforward.xml
>
> Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx>

Thanks for the review!

Right before pushing, I realized that VIR_ERR_INTERNAL_ERROR is
probably not the best fit for this scenario. Are you okay with me
squashing in the changes below?


diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
index 9c7ee6d75d..e04b85fee4 100644
--- a/src/conf/domain_validate.c
+++ b/src/conf/domain_validate.c
@@ -2101,7 +2101,7 @@ virDomainNetDefValidate(const virDomainNetDef *net)
         (net->type != VIR_DOMAIN_NET_TYPE_USER ||
          (net->type == VIR_DOMAIN_NET_TYPE_USER &&
           net->backend.type != VIR_DOMAIN_NET_BACKEND_PASST))) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("The <portForward> element can only be used
with <interface type='user'> and its 'passt' backend"));
         return -1;
     }
diff --git a/tests/qemuxml2argvdata/net-user-slirp-portforward.x86_64-latest.err
b/tests/qemuxml2argvdata/net-user-slirp-portforward.x86_64-latest.err
index f296db1e8c..eaa934742e 100644
--- a/tests/qemuxml2argvdata/net-user-slirp-portforward.x86_64-latest.err
+++ b/tests/qemuxml2argvdata/net-user-slirp-portforward.x86_64-latest.err
@@ -1 +1 @@
-internal error: The <portForward> element can only be used with
<interface type='user'> and its 'passt' backend
+unsupported configuration: The <portForward> element can only be used
with <interface type='user'> and its 'passt' backend
-- 
Andrea Bolognani / Red Hat / Virtualization





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