[Xen-devel] [PATCH 3/4] libxl: only allow guests with a device model to use cd-{eject/insert}

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/libxl/libxl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 9d785a4..232e2c1 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2909,6 +2909,12 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, 
libxl_device_disk *disk,
         goto out;
     }
 
+    if (dm_ver == LIBXL_DEVICE_MODEL_VERSION_NONE) {
+        LOG(ERROR, "HVM guests without a device model cannot use cd-insert");
+        rc = ERROR_FAIL;
+        goto out;
+    }
+
     disks = libxl_device_disk_list(ctx, domid, &num);
     for (i = 0; i < num; i++) {
         if (disks[i].is_cdrom && !strcmp(disk->vdev, disks[i].vdev))
-- 
2.6.4 (Apple Git-63)


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