Add a utility function to append a DATA_BLOB to a talloc object

[metze/samba/wip.git] / source3 / lib / util.c

diff --git a/source3/lib/util.c b/source3/lib/util.c
index 201d87aeb5cf51a9eddea8cdd0d914ecc5e0737f..ec43ea7037dc73aa05e0c81447b89906992f9a10 100644 (file)
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -2990,6 +2990,32 @@ void *talloc_check_name_abort(const void *ptr, const char *name)
        return NULL;
 }
 
+/**********************************************************************
+ Append a DATA_BLOB to a talloc'ed object
+***********************************************************************/
+
+void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
+{
+       size_t old_size = 0;
+       char *result;
+
+       if (blob.length == 0) {
+               return buf;
+       }
+
+       if (buf != NULL) {
+               old_size = talloc_get_size(buf);
+       }
+
+       result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
+       if (result == NULL) {
+               return NULL;
+       }
+
+       memcpy(result + old_size, blob.data, blob.length);
+       return result;
+}
+
 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
 {
        switch (share_access & ~FILE_SHARE_DELETE) {