storage: Pass block device to qemu if found.

We check for block storage for standalone container.
If block device is detected, we pass that to qemu.
Skip bind-mounting the rootfs in that case.

Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>

src/hypervisor.c

@@ -149,6 +149,15 @@ cc_oci_append_storage_args(struct cc_oci_config *config,
 		return false;
 	}
 
+	if (config->device_name) {
+		g_ptr_array_add(additional_args, g_strdup("-device"));
+		g_ptr_array_add(additional_args, g_strdup_printf("virtio-blk,drive=drive-%d,scsi=off,config-wce=off",
+			       config->state.block_index));
+		g_ptr_array_add(additional_args, g_strdup_printf("-drive\nid=drive-%d,file=%s,aio=threads,format=raw,if=none",
+			       config->state.block_index, 
+			       config->device_name));
+	}
+
 	workload_dir = cc_oci_get_workload_dir(config);
 	if (! workload_dir) {
 		g_critical ("No workload");

src/oci.c

@@ -703,14 +703,16 @@ cc_oci_create (struct cc_oci_config *config)
 	 * Bind mount container rootfs
 	 */
 	if (! config->pod) {
-		if (! cc_oci_add_rootfs_mount(config)) {
-			g_critical("failed to add container rootfs bind mount");
-			return false;
-		}
+		if (! cc_oci_rootfs_is_block_device(config)) {
+			if (! cc_oci_add_rootfs_mount(config)) {
+				g_critical("failed to add container rootfs bind mount");
+				return false;
+			}
 
-		if (! cc_handle_rootfs_mount(config)) {
-			g_critical("failed to mount container rootfs");
-			return false;
+			if (! cc_handle_rootfs_mount(config)) {
+				g_critical("failed to mount container rootfs");
+				return false;
+			}
 		}
 	}