[PATCH 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      |   35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 0 deletions(-)

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index c369fd3..eb8786c 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1389,6 +1389,7 @@ _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 2c5559f..aebc733 100644
--- a/tools/libxl/libxl_qmp.c
+++ b/tools/libxl/libxl_qmp.c
@@ -1024,6 +1024,41 @@ out:
     return rc;
 }
 
+int libxl__qmp_insert_cdrom(libxl__gc *gc, int domid,
+                            const libxl_device_disk *disk)
+{
+    libxl__qmp_handler *qmp = NULL;
+    char *device_id;
+    int rc = 0;
+
+    device_id = libxl__sprintf(gc, "ide-%s", disk->vdev);
+    if (!device_id)
+        return ERROR_NOMEM;
+
+    qmp = libxl__qmp_initialize(gc, domid);
+    if (!qmp)
+        return ERROR_FAIL;
+
+    if (disk->format == LIBXL_DISK_FORMAT_EMPTY) {
+        libxl__json_object *args = NULL;
+
+        args = qmp_parameters_add_string(gc, NULL, "device", device_id);
+        if (!args) {
+            rc = ERROR_NOMEM;
+            goto out;
+        }
+        rc = qmp_synchronous_send(qmp, "eject", args, NULL, NULL, qmp->timeout);
+        libxl__json_object_free(gc, args);
+    } else {
+        char *file = disk->pdev_path;
+        rc = qmp_change(gc, qmp, device_id, file, NULL);
+    }
+
+out:
+    libxl__qmp_close(qmp);
+    return rc;
+}
+
 int libxl__qmp_initializations(libxl__gc *gc, uint32_t domid,
                                const libxl_domain_config *guest_config)
 {
-- 
Anthony PERARD