[PATCH 14/19] libxl: Provide libxl_string_list_length

[Ian Jackson <ian.jackson@eu.citrix.com>]

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---
 tools/libxl/libxl.c |    8 ++++++++
 tools/libxl/libxl.h |    1 +
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index f41b62f..8910420 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -177,6 +177,14 @@ void libxl_string_list_dispose(libxl_string_list *psl)
     free(sl);
 }
 
+int libxl_string_list_length(const libxl_string_list *psl)
+{
+    if (!psl) return 0;
+    int i = 0;
+    while (*psl++) i++;
+    return i;
+}
+
 void libxl_key_value_list_dispose(libxl_key_value_list *pkvl)
 {
     int i;
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 0219f81..b376316 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -273,6 +273,7 @@ typedef uint8_t libxl_mac[6];
 
 typedef char **libxl_string_list;
 void libxl_string_list_dispose(libxl_string_list *sl);
+int libxl_string_list_length(const libxl_string_list *sl);
 
 typedef char **libxl_key_value_list;
 void libxl_key_value_list_dispose(libxl_key_value_list *kvl);
-- 
1.7.2.5