libxl: add new "defbool" built in type.

This type is a but like a "boolean" but with a third state "default" (so really
I suppose it's a tristate).

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/tools/libxl/libxlu_cfg.c b/tools/libxl/libxlu_cfg.c
index e3659c7654..c32cf046c1 100644
--- a/tools/libxl/libxlu_cfg.c
+++ b/tools/libxl/libxlu_cfg.c
@@ -237,6 +237,17 @@ int xlu_cfg_get_long(const XLU_Config *cfg, const char *n,
     return 0;
 }
 
+int xlu_cfg_get_defbool(const XLU_Config *cfg, const char *n, libxl_defbool *b,
+                     int dont_warn)
+{
+    int ret;
+    long l;
+
+    ret = xlu_cfg_get_long(cfg, n, &l, dont_warn);
+    if (ret) return ret;
+    libxl_defbool_set(b, !!l);
+    return 0;
+}
 
 int xlu_cfg_get_list(const XLU_Config *cfg, const char *n,
                      XLU_ConfigList **list_r, int *entries_r, int dont_warn) {