libxl: add libxl__qmp_run_command_flexarray() function

Add a function libxl__qmp_run_command_flexarray() to run a qmp command
with an array of arguments. The arguments are name-value pairs stored
in a flexarray.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index ce8e17abbea3fc362c91deabb72027623b925ae0..01aabad5d99387ae6ee8f2a45d877996b350a632 100644 (file)
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1772,6 +1772,9 @@ typedef struct libxl__qmp_handler libxl__qmp_handler;
  */
 _hidden libxl__qmp_handler *libxl__qmp_initialize(libxl__gc *gc,
                                                   uint32_t domid);
+_hidden int libxl__qmp_run_command_flexarray(libxl__gc *gc, int domid,
+                                             const char *cmd,
+                                             flexarray_t *array);
 /* ask to QEMU the serial port information and store it in xenstore. */
 _hidden int libxl__qmp_query_serial(libxl__qmp_handler *qmp);
 _hidden int libxl__qmp_pci_add(libxl__gc *gc, int d, libxl_device_pci *pcidev);

diff --git a/tools/libxl/libxl_qmp.c b/tools/libxl/libxl_qmp.c
index 63c49c50700b8aab92a54eeb282b66be783c184b..f6748e6e1e6ba2e6c5d155308795c6d8f6aa04ed 100644 (file)
--- a/tools/libxl/libxl_qmp.c
+++ b/tools/libxl/libxl_qmp.c
@@ -827,6 +827,22 @@ static int qmp_run_command(libxl__gc *gc, int domid,
     return rc;
 }
 
+int libxl__qmp_run_command_flexarray(libxl__gc *gc, int domid,
+                                     const char *cmd, flexarray_t *array)
+{
+    libxl__json_object *args = NULL;
+    int i;
+    void *name, *value;
+
+    for (i = 0; i < array->count; i += 2) {
+        flexarray_get(array, i, &name);
+        flexarray_get(array, i + 1, &value);
+        qmp_parameters_add_string(gc, &args, (char *)name, (char *)value);
+    }
+
+    return qmp_run_command(gc, domid, cmd, args, NULL, NULL);
+}
+
 int libxl__qmp_pci_add(libxl__gc *gc, int domid, libxl_device_pci *pcidev)
 {
     libxl__qmp_handler *qmp = NULL;