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From d0f98bd3ab59c5c4fa085f22df4763caabcef3b0 Mon Sep 17 00:00:00 2001
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Message-Id: <d0f98bd3ab59c5c4fa085f22df4763caabcef3b0@dist-git>
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From: Erik Skultety <eskultet@redhat.com>
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Date: Fri, 1 Feb 2019 17:21:56 +0100
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Subject: [PATCH] qemu: domain: Add /dev/sev into the domain mount namespace
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selectively
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Instead of exposing /dev/sev to every domain, do it selectively.
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Signed-off-by: Erik Skultety <eskultet@redhat.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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(cherry picked from commit 6fd4c8f8785a063112c8161a3a3f5ad3cb6647ea)
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https: //bugzilla.redhat.com/show_bug.cgi?id=1665400
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Signed-off-by: Erik Skultety <eskultet@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/qemu/qemu_domain.c | 24 ++++++++++++++++++++++++
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1 file changed, 24 insertions(+)
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diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
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index 0ddc6ef4a7..c530733e97 100644
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--- a/src/qemu/qemu_domain.c
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+++ b/src/qemu/qemu_domain.c
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@@ -118,6 +118,7 @@ VIR_ENUM_IMPL(qemuDomainNamespace, QEMU_DOMAIN_NS_LAST,
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#define DEVPREFIX "/dev/"
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#define DEV_VFIO "/dev/vfio/vfio"
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#define DEVICE_MAPPER_CONTROL_PATH "/dev/mapper/control"
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+#define DEV_SEV "/dev/sev"
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struct _qemuDomainLogContext {
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@@ -11652,6 +11653,26 @@ qemuDomainSetupLoader(virQEMUDriverConfigPtr cfg ATTRIBUTE_UNUSED,
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}
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+static int
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+qemuDomainSetupLaunchSecurity(virQEMUDriverConfigPtr cfg ATTRIBUTE_UNUSED,
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+ virDomainObjPtr vm,
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+ const struct qemuDomainCreateDeviceData *data)
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+{
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+ virDomainSEVDefPtr sev = vm->def->sev;
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+
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+ if (!sev || sev->sectype != VIR_DOMAIN_LAUNCH_SECURITY_SEV)
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+ return 0;
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+
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+ VIR_DEBUG("Setting up launch security");
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+
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+ if (qemuDomainCreateDevice(DEV_SEV, data, false) < 0)
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+ return -1;
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+
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+ VIR_DEBUG("Set up launch security");
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+ return 0;
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+}
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+
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+
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int
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qemuDomainBuildNamespace(virQEMUDriverConfigPtr cfg,
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virSecurityManagerPtr mgr,
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@@ -11723,6 +11744,9 @@ qemuDomainBuildNamespace(virQEMUDriverConfigPtr cfg,
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if (qemuDomainSetupLoader(cfg, vm, &data) < 0)
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goto cleanup;
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+ if (qemuDomainSetupLaunchSecurity(cfg, vm, &data) < 0)
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+ goto cleanup;
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+
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/* Save some mount points because we want to share them with the host */
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for (i = 0; i < ndevMountsPath; i++) {
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struct stat sb;
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--
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2.20.1
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