[libvirt] [PATCH] selinux: Avoid label reservations for type = none during restart

[Shivaprasad G Bhat]

The problem is libvirt kills the guests during libvirt restart if more than
guest has security type as none. This is because, libvirt as part of guest-
reconnect tries to reserve the security labels. In case of type=none, the range
of security context happen to be same for several guests. During reservation,
the second attempt to reserve the same range fails and the Guests would be
killed. The fix is to avoid reserving labels for type = none during libvirt
restart.

Signed-off-by: Shivaprasad G Bhat <sbhat at linux.vnet.ibm.com>
---
 src/security/security_selinux.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/security/security_selinux.c b/src/security/security_selinux.c
index 008c58c..2f8a7f2 100644
--- a/src/security/security_selinux.c
+++ b/src/security/security_selinux.c
@@ -739,7 +739,8 @@ virSecuritySELinuxReserveSecurityLabel(virSecurityManagerPtr mgr,
     virSecurityLabelDefPtr seclabel;
 
     seclabel = virDomainDefGetSecurityLabelDef(def, SECURITY_SELINUX_NAME);
-    if (!seclabel || seclabel->type == VIR_DOMAIN_SECLABEL_STATIC)
+    if (!seclabel || seclabel->type == VIR_DOMAIN_SECLABEL_STATIC ||
+        seclabel->type == VIR_DOMAIN_SECLABEL_NONE)
         return 0;
 
     if (getpidcon_raw(pid, &pctx) == -1) {