From 25701f105b947500f920eb5a13e328f8f7843d38 Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Thu, 28 Jul 2022 12:00:45 +0900
Subject: w32: Fix for bidirectional pipe.

* src/estream.c (func_w32_seek): Return an error with ESPIPE, when
it's pipe.

--

GnuPG-bug-id: 6112
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
---
 src/estream.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/estream.c b/src/estream.c
index 07a5d97..17d599f 100644
--- a/src/estream.c
+++ b/src/estream.c
@@ -1560,6 +1560,12 @@ func_w32_seek (void *cookie, gpgrt_off_t *offset, int whence)
       return -1;
     }
 
+  if (GetFileType (w32_cookie->hd) == FILE_TYPE_PIPE)
+    {
+      _set_errno (ESPIPE);
+      return -1;
+    }
+
   if (whence == SEEK_SET)
     {
       method = FILE_BEGIN;
-- 
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