[libvirt] [PATCH 15/19] vircgroup: introduce virCgroupV2DenyAllDevices

[Pavel Hrdina]

If we want to deny all devices we just need to replace any existing
program with new program with empty map.

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
 src/util/vircgroupv2.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
index 6c3f2bf522..4bcdd16814 100644
--- a/src/util/vircgroupv2.c
+++ b/src/util/vircgroupv2.c
@@ -2087,6 +2087,16 @@ virCgroupV2AllowAllDevices(virCgroupPtr group,
 }
 
 
+static int
+virCgroupV2DenyAllDevices(virCgroupPtr group)
+{
+    if (virCgroupV2DeviceDetectProg(group) < 0)
+        return -1;
+
+    return virCgroupV2DeviceCreateProg(group);
+}
+
+
 virCgroupBackend virCgroupV2Backend = {
     .type = VIR_CGROUP_BACKEND_TYPE_V2,
 
@@ -2139,6 +2149,7 @@ virCgroupBackend virCgroupV2Backend = {
     .allowDevice = virCgroupV2AllowDevice,
     .denyDevice = virCgroupV2DenyDevice,
     .allowAllDevices = virCgroupV2AllowAllDevices,
+    .denyAllDevices = virCgroupV2DenyAllDevices,
 
     .setCpuShares = virCgroupV2SetCpuShares,
     .getCpuShares = virCgroupV2GetCpuShares,
-- 
2.20.1