[libvirt] [PATCH 3/5] qemu: domain: Add /dev/sev into the domain mount namespace selectively
Instead of exposing /dev/sev to every domain, do it selectively.
Signed-off-by: Erik Skultety <eskultet(a)redhat.com>
---
src/qemu/qemu_domain.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 5bfe4fe14e..f02c45535a 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -116,6 +116,7 @@ VIR_ENUM_IMPL(qemuDomainNamespace, QEMU_DOMAIN_NS_LAST,
#define DEVPREFIX "/dev/"
#define DEV_VFIO "/dev/vfio/vfio"
#define DEVICE_MAPPER_CONTROL_PATH "/dev/mapper/control"
+#define DEV_SEV "/dev/sev"
struct _qemuDomainLogContext {
@@ -12200,6 +12201,26 @@ 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,
@@ -12271,6 +12292,9 @@ 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