xl: Add defaultbridge config option for xl.conf

Currently guests created with the xl stack will have "xenbr0"
written as their default into xenstore. It can be changed in
the individual guest config files, but there is no way to
have that default globally changed.

Add a config option to xl.conf that allows to have a different
default bridge name.

Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/tools/libxl/xl.c b/tools/libxl/xl.c
index 9dac99842e..df9b1e7528 100644
--- a/tools/libxl/xl.c
+++ b/tools/libxl/xl.c
@@ -38,6 +38,7 @@ int dryrun_only;
 int autoballoon = 1;
 char *lockfile;
 char *default_vifscript = NULL;
+char *default_bridge = NULL;
 enum output_format default_output_format = OUTPUT_FORMAT_JSON;
 
 static xentoollog_level minmsglevel = XTL_PROGRESS;
@@ -79,6 +80,9 @@ static void parse_global_config(const char *configfile,
     if (!xlu_cfg_get_string (config, "vifscript", &buf, 0))
         default_vifscript = strdup(buf);
 
+    if (!xlu_cfg_get_string (config, "defaultbridge", &buf, 0))
+	default_bridge = strdup(buf);
+
     if (!xlu_cfg_get_string (config, "output_format", &buf, 0)) {
         if (!strcmp(buf, "json"))
             default_output_format = OUTPUT_FORMAT_JSON;