$NetBSD: patch-aa,v 1.14 2023/09/06 16:00:15 vins Exp $

Portability fixes for NetBSD pty(4).

--- pty.c.orig	2014-04-26 10:58:35.000000000 +0000
+++ pty.c
@@ -318,6 +318,45 @@ char **ttyn;
 
 /***************************************************************/
 
+#if defined(__NetBSD__) && !defined(PTY_DONE)
+#define PTY_DONE
+
+#include <sys/param.h>
+#include <string.h>
+
+int
+OpenPTY(ttyn)
+char **ttyn;
+{
+  int m, s, f;
+  char *t;
+
+  do
+    {
+      if (openpty(&m, &s, TtyName, NULL, NULL) < 0)
+        return -1;
+      close(m);
+      close(s);
+
+      strcpy(PtyName, TtyName);
+      t = strrchr(PtyName, '/');
+      if ((t == NULL ) || (*++t != 't'))
+        return -1;
+      *t = 'p';
+
+      f = open(PtyName, O_RDWR | O_NOCTTY);
+    }
+  while (f < 0);
+
+  initmaster(f);
+  *ttyn = TtyName;
+
+  return f;
+}
+#endif
+
+/***************************************************************/
+
 #if defined(HAVE_OPENPTY) && !defined(PTY_DONE)
 #define PTY_DONE
 int