1 files changed, 21 insertions, 0 deletions
diff --git a/windows/utils/get_system_dir.c b/windows/utils/get_system_dir.c
new file mode 100644
index 00000000..049cd7fc
--- /dev/null
+++ b/windows/utils/get_system_dir.c
@@ -0,0 +1,21 @@
+/*
+ * Wrapper function around GetSystemDirectory that deals with
+ * allocating the output buffer, and also caches the result for future
+ * calls.
+ */
+
+#include "putty.h"
+
+const char *get_system_dir(void)
+{
+    static char *sysdir = NULL;
+    static size_t sysdirsize = 0;
+
+    if (!sysdir) {
+        size_t len;
+        while ((len = GetSystemDirectory(sysdir, sysdirsize)) >= sysdirsize)
+            sgrowarray(sysdir, sysdirsize, len);
+    }
+
+    return sysdir;
+}