From 801aa5532f36514b1a73de034591c1e7ae324a05 Mon Sep 17 00:00:00 2001
From: Charlie Shepherd <masterdriverz@gentoo.org>
Date: Fri, 23 Nov 2007 20:49:27 +0000
Subject: Add tty applet

---
 toys/Config.in |  8 ++++++++
 toys/toylist.h |  1 +
 toys/tty.c     | 13 +++++++++++++
 3 files changed, 22 insertions(+)
 create mode 100644 toys/tty.c

diff --git a/toys/Config.in b/toys/Config.in
index e387d245..0c3cb1e3 100644
--- a/toys/Config.in
+++ b/toys/Config.in
@@ -452,6 +452,14 @@ config TRUE
 	help
 	  Return zero.
 
+config TTY
+	bool "tty"
+	default y
+	help
+	  Print the filename of the terminal connected to standard input.
+
+	  -s	Don't print anything, only return an exit status.
+
 config WHICH
 	bool "which"
 	default y
diff --git a/toys/toylist.h b/toys/toylist.h
index 87bffed7..d7f30dcb 100644
--- a/toys/toylist.h
+++ b/toys/toylist.h
@@ -129,5 +129,6 @@ USE_SYNC(NEWTOY(sync, NULL, TOYFLAG_BIN))
 USE_TOUCH(NEWTOY(touch, "l#t:r:mca", TOYFLAG_BIN))
 USE_TOYSH(NEWTOY(toysh, "c:i", TOYFLAG_BIN))
 USE_TRUE(NEWTOY(true, NULL, TOYFLAG_BIN))
+USE_TTY(NEWTOY(tty, "s", TOYFLAG_BIN))
 USE_WHICH(NEWTOY(which, "a", TOYFLAG_USR|TOYFLAG_BIN))
 USE_YES(NEWTOY(yes, "", TOYFLAG_USR|TOYFLAG_BIN))
diff --git a/toys/tty.c b/toys/tty.c
new file mode 100644
index 00000000..c6eeac0a
--- /dev/null
+++ b/toys/tty.c
@@ -0,0 +1,13 @@
+#include "toys.h"
+
+int tty_main(void)
+{
+	char *name = ttyname(0);
+	if (!toys.optflags) {
+		if (name)
+			puts(name);
+		else
+			puts("Not a tty");
+	}
+	return !name;
+}
-- 
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