Hello,
as originally requested in Red Hat Bugzilla #445213, I would like to ask
you to add support for DTR/DSR hardware control flow to stty command.
Patch adds the support similar way as existing RTS/CTS hardware control
flow. As the change is pretty small and will affect almost noone, I
didn't added it to NEWS file.
Greetings,
Ondrej Vasik
>From 1afd7863391e5a8ef8dbfcd007681873137ae3d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Va=C5=A1=C3=ADk?= <[email protected]>
Date: Tue, 5 Feb 2013 15:00:47 +0100
Subject: [PATCH] stty: add support for DTR/DSR hardware control flow
Originally requested in Red Hat bugzilla #445213.
* src/stty.c (mode_info): add support for DTR/DSR hardware control flow
* doc/coreutils.texi: document it
* tests/misc/stty.sh: add it to the stty test
---
doc/coreutils.texi | 7 +++++++
src/stty.c | 5 ++++-
tests/misc/stty.sh | 2 +-
3 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index e29af8b..d5a8a9e 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -13311,6 +13311,13 @@ Disable modem control signals. May be negated.
@cindex flow control, hardware
@cindex RTS/CTS flow control
Enable RTS/CTS flow control. Non-POSIX@. May be negated.
+
+@item cdtrdsr
+@opindex cdtrdsr
+@cindex hardware flow control
+@cindex flow control, hardware
+@cindex DTR/DSR flow control
+Enable DTR/DSR flow control. Non-POSIX@. May be negated.
@end table
diff --git a/src/stty.c b/src/stty.c
index fe0f22f..60d45e2 100644
--- a/src/stty.c
+++ b/src/stty.c
@@ -217,7 +217,9 @@ static struct mode_info const mode_info[] =
#ifdef CRTSCTS
{"crtscts", control, REV, CRTSCTS, 0},
#endif
-
+#ifdef CDTRDSR
+ {"cdtrdsr", control, REV, CDTRDSR, 0},
+#endif
{"ignbrk", input, SANE_UNSET | REV, IGNBRK, 0},
{"brkint", input, SANE_SET | REV, BRKINT, 0},
{"ignpar", input, REV, IGNPAR, 0},
@@ -581,6 +583,7 @@ Control settings:\n\
[-]clocal disable modem control signals\n\
[-]cread allow input to be received\n\
* [-]crtscts enable RTS/CTS handshaking\n\
+ * [-]cdtrdsr enable DTR/DSR handshaking\n\
csN set character size to N bits, N in [5..8]\n\
"), stdout);
fputs (_("\
diff --git a/tests/misc/stty.sh b/tests/misc/stty.sh
index 0657a74..a0f3878 100755
--- a/tests/misc/stty.sh
+++ b/tests/misc/stty.sh
@@ -52,7 +52,7 @@ for opt in $options; do
# other serial control settings give the same error. So skip them.
# Also on ppc*|sparc* glibc platforms 'icanon' gives the same error.
# See: http://debbugs.gnu.org/7228#14
- case $opt in parenb|parodd|cstopb|crtscts|icanon) continue;; esac
+ case $opt in parenb|parodd|cstopb|crtscts|icanon|cdtrdsr) continue;; esac
stty $opt || fail=1
--
1.7.1
