[libvirt] [PATCH 3/3] qemu: domain: Add /dev/sev into the domain mount namespace selectively

[Erik Skultety]

Instead of exposing /dev/sev to every domain, do it selectively.

Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
 src/qemu/qemu_domain.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 32a43f2064..a4cdb8d355 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -12112,6 +12112,26 @@ qemuDomainSetupLoader(virQEMUDriverConfigPtr cfg ATTRIBUTE_UNUSED,
 }
 
 
+static int
+qemuDomainSetupLaunchSecurity(virQEMUDriverConfigPtr cfg ATTRIBUTE_UNUSED,
+                              virDomainObjPtr vm,
+                              const struct qemuDomainCreateDeviceData *data)
+{
+    virDomainSEVDefPtr sev = vm->def->sev;
+
+    if (!sev || sev->sectype != VIR_DOMAIN_LAUNCH_SECURITY_SEV)
+        return 0;
+
+    VIR_DEBUG("Setting up launch security");
+
+    if (qemuDomainCreateDevice("/dev/sev", data, false) < 0)
+        return -1;
+
+    VIR_DEBUG("Set up launch security");
+    return 0;
+}
+
+
 int
 qemuDomainBuildNamespace(virQEMUDriverConfigPtr cfg,
                          virSecurityManagerPtr mgr,
@@ -12183,6 +12203,9 @@ qemuDomainBuildNamespace(virQEMUDriverConfigPtr cfg,
     if (qemuDomainSetupLoader(cfg, vm, &data) < 0)
         goto cleanup;
 
+    if (qemuDomainSetupLaunchSecurity(cfg, vm, &data) < 0)
+        goto cleanup;
+
     /* Save some mount points because we want to share them with the host */
     for (i = 0; i < ndevMountsPath; i++) {
         struct stat sb;
-- 
2.20.1