From fa34ba9e7c455b1f1b6d206ecf7a66a46b9a2324 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Wed, 23 Sep 2020 13:06:55 -0500
Subject: [PATCH] Attempt to set raw attributes on new socket PTYs

Attempt to set raw attributes on new socket PTYs to fix an issue on
Linux wherein any data written to a socket before the PTY subordinate
has been opened would be looped back in canonical mode, causing
frame errors; if tcsetattr() fails (usually on a non-Linux platform),
set errno to 0
---
 src/sock.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/sock.c b/src/sock.c
index c9eb926..55b036b 100644
--- a/src/sock.c
+++ b/src/sock.c
@@ -21,6 +21,7 @@ struct slot {
 
 static int bind_pty(patty_ax25_sock *sock) {
     int ptysub;
+    struct termios t;
 
     if (openpty(&sock->fd, &ptysub, sock->pty, NULL, NULL) < 0) {
         goto error_openpty;
@@ -34,6 +35,13 @@ static int bind_pty(patty_ax25_sock *sock) {
         goto error_unlockpt;
     }
 
+    memset(&t, '\0', sizeof(t));
+    cfmakeraw(&t);
+
+    if (tcsetattr(sock->fd, TCSANOW, &t) < 0) {
+        errno = 0;
+    }
+
     return 0;
 
 error_unlockpt: