1 files changed, 14 insertions, 0 deletions
diff --git a/src/unistd/ttyname.c b/src/unistd/ttyname.c
new file mode 100644
index 00000000..0f3e1141
--- /dev/null
+++ b/src/unistd/ttyname.c
@@ -0,0 +1,14 @@
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+
+char *ttyname(int fd)
+{
+	static char buf[TTY_NAME_MAX];
+	int result;
+	if ((result = ttyname_r(fd, buf, sizeof buf))) {
+		errno = result;
+		return NULL;
+	}
+	return buf;
+}