[PATCH V2 1/3] libxl_qmp, Introduce libxl__qmp_insert_cdrom.

[Anthony PERARD <anthony.perard@citrix.com>]

This function can eject or change the CDROM for a guest that use qemu-xen as a
device-model.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
 tools/libxl/libxl_internal.h |  1 +
 tools/libxl/libxl_qmp.c      | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index afa36a7..4240ef2 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1406,6 +1406,7 @@ _hidden int libxl__qmp_resume(libxl__gc *gc, int domid);
 _hidden int libxl__qmp_save(libxl__gc *gc, int domid, const char *filename);
 /* Set dirty bitmap logging status */
 _hidden int libxl__qmp_set_global_dirty_log(libxl__gc *gc, int domid, bool enable);
+_hidden int libxl__qmp_insert_cdrom(libxl__gc *gc, int domid, const libxl_device_disk *disk);
 /* close and free the QMP handler */
 _hidden void libxl__qmp_close(libxl__qmp_handler *qmp);
 /* remove the socket file, if the file has already been removed,
diff --git a/tools/libxl/libxl_qmp.c b/tools/libxl/libxl_qmp.c
index 5fa0c65..7f1dd98 100644
--- a/tools/libxl/libxl_qmp.c
+++ b/tools/libxl/libxl_qmp.c
@@ -913,6 +913,22 @@ int libxl__qmp_set_global_dirty_log(libxl__gc *gc, int domid, bool enable)
                            NULL, NULL);
 }
 
+int libxl__qmp_insert_cdrom(libxl__gc *gc, int domid,
+                            const libxl_device_disk *disk)
+{
+    libxl__json_object *args = NULL;
+    int dev_number = libxl__device_disk_dev_number(disk->vdev, NULL, NULL);
+
+    QMP_PARAMETERS_SPRINTF(&args, "device", "ide-%i", dev_number);
+
+    if (disk->format == LIBXL_DISK_FORMAT_EMPTY) {
+        return qmp_run_command(gc, domid, "eject", args, NULL, NULL);
+    } else {
+        qmp_parameters_add_string(gc, &args, "target", disk->pdev_path);
+        return qmp_run_command(gc, domid, "change", args, NULL, NULL);
+    }
+}
+
 int libxl__qmp_initializations(libxl__gc *gc, uint32_t domid,
                                const libxl_domain_config *guest_config)
 {
-- 
Anthony PERARD