fhandler_serial.cc: MARK and SPACE parity for serial port
Marek Smetana
mara.smetana@gmail.com
Wed Jan 27 20:30:11 GMT 2021
Hi,
This patch add MARK and SPACE parity support to serial port
---
winsup/cygwin/fhandler_serial.cc | 9 ++++++++-
winsup/cygwin/include/sys/termios.h | 1 +
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/fhandler_serial.cc
b/winsup/cygwin/fhandler_serial.cc
index fd5b45899..23d69eca5 100644
--- a/winsup/cygwin/fhandler_serial.cc
+++ b/winsup/cygwin/fhandler_serial.cc
@@ -727,7 +727,10 @@ fhandler_serial::tcsetattr (int action, const struct
termios *t)
/* -------------- Set parity ------------------ */
if (t->c_cflag & PARENB)
- state.Parity = (t->c_cflag & PARODD) ? ODDPARITY : EVENPARITY;
+ if(t->c_cflag & CMSPAR)
+ state.Parity = (t->c_cflag & PARODD) ? MARKPARITY : SPACEPARITY;
+ else
+ state.Parity = (t->c_cflag & PARODD) ? ODDPARITY : EVENPARITY;
else
state.Parity = NOPARITY;
@@ -1068,6 +1071,10 @@ fhandler_serial::tcgetattr (struct termios *t)
t->c_cflag |= (PARENB | PARODD);
if (state.Parity == EVENPARITY)
t->c_cflag |= PARENB;
+ if (state.Parity == MARKPARITY)
+ t->c_cflag |= (PARENB | PARODD | CMSPAR);
+ if (state.Parity == SPACEPARITY)
+ t->c_cflag |= (PARENB | CMSPAR);
/* -------------- Parity errors ------------------ */
diff --git a/winsup/cygwin/include/sys/termios.h
b/winsup/cygwin/include/sys/termios.h
index 17e8d83a3..933851c21 100644
--- a/winsup/cygwin/include/sys/termios.h
+++ b/winsup/cygwin/include/sys/termios.h
@@ -185,6 +185,7 @@ POSIX commands */
#define PARODD 0x00200
#define HUPCL 0x00400
#define CLOCAL 0x00800
+#define CMSPAR 0x40000000 /* Mark or space (stick) parity. */
/* Extended baud rates above 37K. */
#define CBAUDEX 0x0100f
---
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