1 files changed, 26 insertions, 0 deletions
diff --git a/common/iobuf.c b/common/iobuf.c
index 4ec151f5f..04b17ff17 100644
--- a/common/iobuf.c
+++ b/common/iobuf.c
@@ -1260,6 +1260,32 @@ iobuf_is_pipe_filename (const char *fname)
   return check_special_filename (fname) != -1;
 }
 
+
+/* Either open the file specified by the file descriptor FD or - if FD
+   is -1, the file with name FNAME.  As of now MODE is assumed to be
+   "rb" if FNAME is used.  In contrast to iobuf_fdopen the file
+   descriptor FD will not be closed during an iobuf_close.  */
+iobuf_t
+iobuf_open_fd_or_name (gnupg_fd_t fd, const char *fname, const char *mode)
+{
+  iobuf_t a;
+
+  if (fd == -1)
+    a = iobuf_open (fname);
+  else
+    {
+      int fd2;
+
+      fd2 = dup (fd);
+      if (fd2 == -1)
+        a = NULL;
+      else
+        a = iobuf_fdopen (fd2, mode);
+    }
+  return a;
+}
+
+
 /****************
  * Create a head iobuf for reading from a file
  * returns: NULL if an error occures and sets errno