From da391022160804785dad7d53b464e0448ab8aba0 Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Mon, 20 Dec 2021 17:05:14 +0100
Subject: common: Add set_membuf_err.

* common/membuf.c (set_membuf_err): New.
---
 common/membuf.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'common/membuf.c')

diff --git a/common/membuf.c b/common/membuf.c
index 009fbc336..60491b590 100644
--- a/common/membuf.c
+++ b/common/membuf.c
@@ -231,3 +231,15 @@ peek_membuf (membuf_t *mb, size_t *len)
     *len = mb->len;
   return p;
 }
+
+/* To assist using membuf with function returning an error, this
+ * function sets the membuf into the error state.  */
+void
+set_membuf_err (membuf_t *mb, gpg_error_t err)
+{
+  if (!mb->out_of_core)
+    {
+      int myerr = gpg_err_code_to_errno (gpg_err_code (err));
+      mb->out_of_core = myerr? myerr : EINVAL;
+    }
+}
-- 
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