Skip file-based security checks for network disks

Network disks are accessed by qemu directly, and have no
associated file on the host, so checking for file ownership etc.
is unnecessary.
Signed-off-by: NJosh Durgin <joshd@hq.newdream.net>

src/conf/domain_conf.c

@@ -8353,7 +8353,7 @@ int virDomainDiskDefForeachPath(virDomainDiskDefPtr disk,
     size_t depth = 0;
     char *nextpath = NULL;
 
-    if (!disk->src)
+    if (!disk->src || disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK)
         return 0;
 
     if (disk->driverType) {

src/qemu/qemu_security_dac.c

@@ -144,7 +144,7 @@ qemuSecurityDACRestoreSecurityImageLabelInt(virSecurityDriverPtr drv ATTRIBUTE_U
     if (disk->readonly || disk->shared)
         return 0;
 
-    if (!disk->src)
+    if (!disk->src || disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK)
         return 0;
 
     /* If we have a shared FS & doing migrated, we must not

src/security/security_apparmor.c

@@ -619,7 +619,7 @@ AppArmorSetSecurityImageLabel(virSecurityDriverPtr drv,
     if (secdef->type == VIR_DOMAIN_SECLABEL_STATIC)
         return 0;
 
-    if (!disk->src)
+    if (!disk->src || disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK)
         return 0;
 
     if (secdef->imagelabel) {

src/security/security_selinux.c

@@ -436,7 +436,7 @@ SELinuxRestoreSecurityImageLabelInt(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
     if (disk->readonly || disk->shared)
         return 0;
 
-    if (!disk->src)
+    if (!disk->src || disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK)
         return 0;
 
     /* If we have a shared FS & doing migrated, we must not