[PATCH 4/6] libxl: introduce libxl__device_disk_add_t

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

Introduce libxl__device_disk_add_t that takes an additional
xs_transaction_t paramter.
Implement libxl_device_disk_add using libxl__device_disk_add_t.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
 tools/libxl/libxl.c |   19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index ce5e7be..fe63fd5 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -1278,14 +1278,16 @@ static int libxl__device_from_disk(libxl__gc *gc, uint32_t domid,
     return 0;
 }
 
-int libxl_device_disk_add(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk)
+
+static int libxl__device_disk_add_t(libxl__gc *gc, uint32_t domid, xs_transaction_t t,
+        libxl_device_disk *disk)
 {
-    GC_INIT(ctx);
     flexarray_t *front;
     flexarray_t *back;
     char *dev;
     libxl__device device;
     int major, minor, rc;
+    libxl_ctx *ctx = gc->owner;
 
     rc = libxl__device_disk_setdefault(gc, disk);
     if (rc) goto out;
@@ -1381,9 +1383,9 @@ int libxl_device_disk_add(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *dis
     flexarray_append(front, "device-type");
     flexarray_append(front, disk->is_cdrom ? "cdrom" : "disk");
 
-    libxl__device_generic_add(gc, &device,
-                             libxl__xs_kvs_of_flexarray(gc, back, back->count),
-                             libxl__xs_kvs_of_flexarray(gc, front, front->count));
+    libxl__device_generic_add_t(gc, t, &device,
+            libxl__xs_kvs_of_flexarray(gc, back, back->count),
+            libxl__xs_kvs_of_flexarray(gc, front, front->count));
 
     rc = 0;
 
@@ -1391,6 +1393,13 @@ out_free:
     flexarray_free(back);
     flexarray_free(front);
 out:
+    return rc;
+}
+
+int libxl_device_disk_add(libxl_ctx *ctx, uint32_t domid, libxl_device_disk *disk)
+{
+    GC_INIT(ctx);
+    int rc = libxl__device_disk_add_t(gc, domid, XBT_NULL, disk);
     GC_FREE;
     return rc;
 }
-- 
1.7.2.5