Disable a bunch of undesirable termios flags. ICRNL, in particular,

is liable to have been set on serial ports previously used as
terminal devices, and definitely wants not to be set on serial ports
being used for callout.

[originally from svn r6865]

diff --git a/unix/uxser.c b/unix/uxser.c
index 463f4c43f7952d25a1bf29da5d7ab5f09fa1fc6a..d6471084d56fee296aa45e6a7e2399ff8113b6e9 100644 (file)
--- a/unix/uxser.c
+++ b/unix/uxser.c
@@ -205,7 +205,16 @@ static const char *serial_configure(Serial serial, Config *cfg)
 
     options.c_cflag |= CLOCAL | CREAD;
     options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
-    options.c_oflag &= ~OPOST;
+    options.c_iflag &= ~(ISTRIP | IGNCR | INLCR | ICRNL
+#ifdef IUCLC
+                        | IUCLC
+#endif
+                        );
+    options.c_oflag &= ~(OPOST
+#ifdef ONLCR
+                        | ONLCR
+#endif
+                        | OCRNL | ONOCR | ONLRET);
     options.c_cc[VMIN] = 1;
     options.c_cc[VTIME] = 0;