Import sources from 2011-03-30 iso image

1 files changed, 37 insertions, 0 deletions

diff --git a/sys/src/ape/lib/v/plan9/tty.c b/sys/src/ape/lib/v/plan9/tty.c
new file mode 100755
index 000000000..dae26d48f
--- /dev/null
+++ b/sys/src/ape/lib/v/plan9/tty.c
@@ -0,0 +1,37 @@
+/*
+ * turn raw (no echo, etc.) on and off.
+ * ptyfs is gone, so don't even try tcsetattr, etc.
+ */
+#define _POSIX_SOURCE
+#define _RESEARCH_SOURCE
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <libv.h>
+
+static int ctlfd = -1;
+
+/* fd is ignored */
+
+tty_echooff(int fd)
+{
+	if(ctlfd >= 0)
+		return 0;
+	ctlfd = open("/dev/consctl", O_WRONLY);
+	if(ctlfd < 0)
+		return -1;
+	write(ctlfd, "rawon", 5);
+	return 0;
+}
+
+tty_echoon(int fd)
+{
+	if(ctlfd >= 0){
+		write(ctlfd, "rawoff", 6);
+		close(ctlfd);
+		ctlfd = -1;
+		return 0;
+	}
+	return -1;
+}