libxl: Intruduce libxl__strndup.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

2 files changed, 11 insertions, 0 deletions

diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index ef5f6ae5db..56e6618653 100644
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -159,6 +159,16 @@ char *libxl__strdup(libxl__gc *gc, const char *c)
     return s;
 }
 
+char *libxl__strndup(libxl__gc *gc, const char *c, size_t n)
+{
+    char *s = strndup(c, n);
+
+    if (s)
+        libxl__ptr_add(gc, s);
+
+    return s;
+}
+
 char *libxl__dirname(libxl__gc *gc, const char *s)
 {
     char *c;
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 1d2c58ecbe..2ebd18d2ea 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -148,6 +148,7 @@ _hidden void *libxl__calloc(libxl__gc *gc, size_t nmemb, size_t size);
 _hidden void *libxl__realloc(libxl__gc *gc, void *ptr, size_t new_size);
 _hidden char *libxl__sprintf(libxl__gc *gc, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3);
 _hidden char *libxl__strdup(libxl__gc *gc, const char *c);
+_hidden char *libxl__strndup(libxl__gc *gc, const char *c, size_t n);
 _hidden char *libxl__dirname(libxl__gc *gc, const char *s);
 
 _hidden char **libxl__xs_kvs_of_flexarray(libxl__gc *gc, flexarray_t *array, int length);