[PATCH v2 5/5] libxl: add "downscript=no" to Qemu call

[Roger Pau Monne <roger.pau@citrix.com>]

Currently we only pass script=no to Qemu, to avoid calling any scripts when
attaching a tap interface, but we should also pass downscript=no to avoid Qemu
trying to execute a script when disconnecting the interface. This prevents the
following harmless error message:

/etc/qemu-ifdown: could not launch network script

Changes since v1:

 * Indentation fixes.

Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
---
 tools/libxl/libxl_dm.c |   27 ++++++++++++++++++---------
 1 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index 04f76c2..d9c1786 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -216,11 +216,18 @@ static char ** libxl__build_device_model_args_old(libxl__gc *gc,
                 else
                     ifname = libxl__sprintf(gc, "xentap-%s", vifs[i].ifname);
                 flexarray_vappend(dm_args,
-                                "-net", libxl__sprintf(gc, "nic,vlan=%d,macaddr=%s,model=%s",
-                                                       vifs[i].devid, smac, vifs[i].model),
-                                "-net", libxl__sprintf(gc, "tap,vlan=%d,ifname=%s,bridge=%s,script=%s",
-                                                       vifs[i].devid, ifname, vifs[i].bridge, libxl_tapif_script(gc)),
-                                NULL);
+                                  "-net",
+                                  libxl__sprintf(gc,
+                                      "nic,vlan=%d,macaddr=%s,model=%s",
+                                      vifs[i].devid, smac, vifs[i].model),
+                                  "-net",
+                                  libxl__sprintf(gc,
+                                      "tap,vlan=%d,ifname=%s,bridge=%s,"
+                                      "script=%s,downscript=%s",
+                                      vifs[i].devid, ifname, vifs[i].bridge,
+                                      libxl_tapif_script(gc),
+                                      libxl_tapif_script(gc)),
+                                  NULL);
                 ioemu_vifs++;
             }
         }
@@ -461,10 +468,12 @@ static char ** libxl__build_device_model_args_new(libxl__gc *gc,
                                                 vifs[i].model, vifs[i].devid,
                                                 vifs[i].devid, smac));
                 flexarray_append(dm_args, "-netdev");
-                flexarray_append(dm_args,
-                   libxl__sprintf(gc, "type=tap,id=net%d,ifname=%s,script=%s",
-                                                vifs[i].devid, ifname,
-                                                libxl_tapif_script(gc)));
+                flexarray_append(dm_args, libxl__sprintf(gc, 
+                                          "type=tap,id=net%d,ifname=%s,"
+                                          "script=%s,downscript=%s",
+                                          vifs[i].devid, ifname,
+                                          libxl_tapif_script(gc),
+                                          libxl_tapif_script(gc)));
                 ioemu_vifs++;
             }
         }
-- 
1.7.7.5 (Apple Git-26)