[libvirt] [PATCH v2 1/5] security, apparmor: add (Set|Restore)MemoryLabel
Recent changes have made implementing this mandatory to hot add any
memory.
Implementing this in apparmor fixes this as well as allows hot-add of nvdimm
tpye memory with an nvdimmPath set generating a AppArmor rule for that
path.
Example hot adding:
<memory model='nvdimm'>
<source>
<path>/tmp/nvdimm-test</path>
</source>
<target>
<size unit='KiB'>524288</size>
<node>0</node>
</target>
</memory>
Creates now:
"/tmp/nvdimm-test" rwk,
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1755153
Signed-off-by: Christian Ehrhardt <christian.ehrhardt(a)canonical.com>
---
src/security/security_apparmor.c | 43 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/src/security/security_apparmor.c b/src/security/security_apparmor.c
index a989992..7509552 100644
--- a/src/security/security_apparmor.c
+++ b/src/security/security_apparmor.c
@@ -718,6 +718,46 @@ AppArmorRestoreSecurityDiskLabel(virSecurityManagerPtr mgr,
/* Called when hotplugging */
static int
+AppArmorSetMemoryLabel(virSecurityManagerPtr mgr,
+ virDomainDefPtr def,
+ virDomainMemoryDefPtr mem)
+{
+ switch ((virDomainMemoryModel) mem->model) {
+ case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
+ if (!virFileExists(mem->nvdimmPath)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("%s: \'%s\' does not exist"),
+ __func__, mem->nvdimmPath);
+ return -1;
+ }
+ return reload_profile(mgr, def, mem->nvdimmPath, true);
+ break;
+ case VIR_DOMAIN_MEMORY_MODEL_NONE:
+ case VIR_DOMAIN_MEMORY_MODEL_DIMM:
+ case VIR_DOMAIN_MEMORY_MODEL_LAST:
+ break;
+ }
+
+ return 0;
+}
+
+
+static int
+AppArmorRestoreMemoryLabel(virSecurityManagerPtr mgr,
+ virDomainDefPtr def,
+ virDomainMemoryDefPtr mem ATTRIBUTE_UNUSED)
+{
+ virSecurityLabelDefPtr secdef =
+ virDomainDefGetSecurityLabelDef(def, SECURITY_APPARMOR_NAME);
+
+ if (!secdef || !secdef->relabel)
+ return 0;
+
+ return reload_profile(mgr, def, NULL, false);
+}
+
+/* Called when hotplugging */
+static int
AppArmorSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainDefPtr def,
virStorageSourcePtr src)
@@ -1115,6 +1155,9 @@ virSecurityDriver virAppArmorSecurityDriver = {
.domainSetSecurityImageLabel = AppArmorSetSecurityImageLabel,
.domainRestoreSecurityImageLabel = AppArmorRestoreSecurityImageLabel,
+ .domainSetSecurityMemoryLabel = AppArmorSetMemoryLabel,
+ .domainRestoreSecurityMemoryLabel = AppArmorRestoreMemoryLabel,
+
.domainSetSecurityDaemonSocketLabel = AppArmorSetSecurityDaemonSocketLabel,
.domainSetSecuritySocketLabel = AppArmorSetSecuritySocketLabel,
.domainClearSecuritySocketLabel = AppArmorClearSecuritySocketLabel,
--
2.7.4