X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/1ccd5f670a432f98e94b384dd169a1a760dced9a..fc6fb551537b5af8988576071ff6e1240cff269f:/src/src/structs.h

diff --git a/src/src/structs.h b/src/src/structs.h
index c16899a0c..6adb30023 100644
--- a/src/src/structs.h
+++ b/src/src/structs.h
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2017 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -25,6 +25,13 @@ struct smtp_outblock;
 struct transport_info;
 struct router_info;
 
+/* Growable-string */
+typedef struct gstring {
+  int	size;		/* Current capacity of string memory */
+  int	ptr;		/* Offset at which to append further chars */
+  uschar * s;		/* The string memory */
+} gstring;
+
 /* Structure for remembering macros for the configuration file */
 
 typedef struct macro_item {
@@ -238,7 +245,7 @@ typedef int (*tpt_chunk_cmd_cb)(struct transport_context *, unsigned, unsigned);
 typedef struct transport_context {
   union {			/* discriminated by option topt_output_string */
     int			  fd;	/* file descriptor to write message to */
-    uschar *		  msg;	/* allocated string with written message */
+    gstring *		  msg;	/* allocated string with written message */
   } u;
   transport_instance	* tblock;		/* transport */
   struct address_item	* addr;
@@ -249,10 +256,6 @@ typedef struct transport_context {
   /* items below only used with option topt_use_bdat */
   tpt_chunk_cmd_cb	  chunk_cb;		/* per-datachunk callback */
   void			* smtp_context;
-
-  /* items below only used with option topt_output_string */
-  int			  msg_size;
-  int			  msg_ptr;
 } transport_ctx;