[Xen-devel] [PATCH 2/3] libxl: don't execute hotplug scripts if device is on a driver domain

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

Prevent hotplug script execution from libxl if device is on a
different domain.

Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Ian Jackson <ian.jackson@xxxxxxxxxx>
Cc: George Dunlap <george.dunlap@xxxxxxxxxx>
---
 tools/libxl/libxl_device.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/tools/libxl/libxl_device.c b/tools/libxl/libxl_device.c
index b1fc4ef..bc86648 100644
--- a/tools/libxl/libxl_device.c
+++ b/tools/libxl/libxl_device.c
@@ -903,6 +903,13 @@ static void device_hotplug(libxl__egc *egc, 
libxl__ao_device *aodev)
     int hotplug;
     pid_t pid;
 
+    /*
+     * If device is attached from a driver domain don't try to execute
+     * hotplug scripts
+     */
+    if (aodev->dev->backend_domid != LIBXL_TOOLSTACK_DOMID)
+        goto out;
+
     /* Check if we have to execute hotplug scripts for this device
      * and return the necessary args/env vars for execution */
     hotplug = libxl__get_hotplug_script_info(gc, aodev->dev, &args, &env,
-- 
1.7.7.5 (Apple Git-26)


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