From 160f1bf92cdf74cdea1453f774ff18c1d63e721a Mon Sep 17 00:00:00 2001
From: Willy Tarreau <w@1wt.eu>
Date: Sun, 11 Dec 2022 19:50:32 +0100
Subject: src: add support for non-standard baud rates on MacOS

@deepcoder reported in issue #14 that MacOS doesn't support non-standard
baud rates. A similar issue was already addressed by avrdude here by using
the IOSSIOSPEED ioctl:

  https://github.com/avrdudes/avrdude/issues/771

This patch attempts the same method here.
---
 src/bt.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/bt.c b/src/bt.c
index 7055818..3194f21 100644
--- a/src/bt.c
+++ b/src/bt.c
@@ -48,6 +48,9 @@
 #if defined(__FreeBSD__)
 #include <sys/sysctl.h>
 #endif
+#if defined(__APPLE__)
+#include <IOKit/serial/ioss.h>
+#endif
 
 #define MAXPORTS 100
 #define BUFSIZE 2048
@@ -551,6 +554,13 @@ int set_port(int fd, int baud)
 			if (cfsetispeed(&tio, baud_flag) == -1)
 				return -1;
 		}
+#ifdef __APPLE__
+		/* try to set a non-standard baud rate */
+		else if (ioctl(fd, IOSSIOSPEED, &baud) >= 0) {
+			/* finally succeeded */
+			baud_flag = 0;
+		}
+#endif
 
 		if (baud_flag == ~0) { /* baud rate not found */
 			errno = EINVAL;
-- 
2.17.5