security: Fix labelling host devices (bz 1145968)

The check for ISCSI devices was missing a check of subsys type, which
meant we could skip labelling of other host devices as well. This fixes
USB hotplug on F21

https://bugzilla.redhat.com/show_bug.cgi?id=1145968

src/security/security_apparmor.c

@@ -828,7 +828,8 @@ AppArmorSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
     /* Like AppArmorRestoreSecurityImageLabel() for a networked disk,
      * do nothing for an iSCSI hostdev
      */
-    if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
+    if (dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+        scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
         return 0;
 
     if (profile_loaded(secdef->imagelabel) < 0)

src/security/security_dac.c

@@ -523,7 +523,8 @@ virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
     /* Like virSecurityDACSetSecurityImageLabel() for a networked disk,
      * do nothing for an iSCSI hostdev
      */
-    if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
+    if (dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+        scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
         return 0;
 
     cbdata.manager = mgr;
@@ -657,7 +658,8 @@ virSecurityDACRestoreSecurityHostdevLabel(virSecurityManagerPtr mgr,
     /* Like virSecurityDACRestoreSecurityImageLabelInt() for a networked disk,
      * do nothing for an iSCSI hostdev
      */
-    if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
+    if (dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+        scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
         return 0;
 
     switch ((virDomainHostdevSubsysType) dev->source.subsys.type) {

src/security/security_selinux.c

@@ -1329,7 +1329,8 @@ virSecuritySELinuxSetSecurityHostdevSubsysLabel(virDomainDefPtr def,
     /* Like virSecuritySELinuxSetSecurityImageLabelInternal() for a networked
      * disk, do nothing for an iSCSI hostdev
      */
-    if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
+    if (dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+        scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
         return 0;
 
     switch (dev->source.subsys.type) {
@@ -1522,7 +1523,8 @@ virSecuritySELinuxRestoreSecurityHostdevSubsysLabel(virSecurityManagerPtr mgr,
     /* Like virSecuritySELinuxRestoreSecurityImageLabelInt() for a networked
      * disk, do nothing for an iSCSI hostdev
      */
-    if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
+    if (dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+        scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
         return 0;
 
     switch (dev->source.subsys.type) {