[libvirt] [PATCH v3 2/5] security, apparmor: add (Set|Restore)InputLabel
d8116b5a "security: Introduce functions for input device hot(un)plug"
implemented the code (Set|Restore)InputLabel for several security modules,
this patch adds an AppArmor implementation for it as well.
That fixes hot-plugging event input devices by generating a rule for the
path that needs to be accessed.
Example hot adding:
<input type='passthrough' bus='virtio'>
<source evdev='/dev/input/event0' />
</input>
Creates now:
"/dev/input/event0" 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 | 48 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/src/security/security_apparmor.c b/src/security/security_apparmor.c
index 18908c8..92acc9e 100644
--- a/src/security/security_apparmor.c
+++ b/src/security/security_apparmor.c
@@ -761,6 +761,51 @@ AppArmorRestoreMemoryLabel(virSecurityManagerPtr mgr,
/* Called when hotplugging */
static int
+AppArmorSetInputLabel(virSecurityManagerPtr mgr,
+ virDomainDefPtr def,
+ virDomainInputDefPtr input)
+{
+ if (input == NULL)
+ return 0;
+
+ switch ((virDomainInputType) input->type) {
+ case VIR_DOMAIN_INPUT_TYPE_PASSTHROUGH:
+ if (input->source.evdev == NULL) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("%s: passthrough input device has no source"),
+ __func__);
+ return -1;
+ }
+ if (!virFileExists(input->source.evdev)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("%s: \'%s\' does not exist"),
+ __func__, input->source.evdev);
+ return -1;
+ }
+ return reload_profile(mgr, def, input->source.evdev, true);
+ break;
+
+ case VIR_DOMAIN_INPUT_TYPE_MOUSE:
+ case VIR_DOMAIN_INPUT_TYPE_TABLET:
+ case VIR_DOMAIN_INPUT_TYPE_KBD:
+ case VIR_DOMAIN_INPUT_TYPE_LAST:
+ break;
+ }
+
+ return 0;
+}
+
+
+static int
+AppArmorRestoreInputLabel(virSecurityManagerPtr mgr,
+ virDomainDefPtr def,
+ virDomainInputDefPtr input ATTRIBUTE_UNUSED)
+{
+ return reload_profile(mgr, def, NULL, false);
+}
+
+/* Called when hotplugging */
+static int
AppArmorSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainDefPtr def,
virStorageSourcePtr src)
@@ -1161,6 +1206,9 @@ virSecurityDriver virAppArmorSecurityDriver = {
.domainSetSecurityMemoryLabel = AppArmorSetMemoryLabel,
.domainRestoreSecurityMemoryLabel = AppArmorRestoreMemoryLabel,
+ .domainSetSecurityInputLabel = AppArmorSetInputLabel,
+ .domainRestoreSecurityInputLabel = AppArmorRestoreInputLabel,
+
.domainSetSecurityDaemonSocketLabel = AppArmorSetSecurityDaemonSocketLabel,
.domainSetSecuritySocketLabel = AppArmorSetSecuritySocketLabel,
.domainClearSecuritySocketLabel = AppArmorClearSecuritySocketLabel,
--
2.7.4