1 files changed, 31 insertions, 0 deletions
diff --git a/usr/klibc/pty.c b/usr/klibc/pty.c
new file mode 100644
index 0000000..7fcb2ba
--- /dev/null
+++ b/usr/klibc/pty.c
@@ -0,0 +1,31 @@
+/*
+ * pty.c
+ *
+ * Basic Unix98 PTY functionality; assumes devpts mounted on /dev/pts
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+
+char *ptsname(int fd)
+{
+	static char buffer[32];	/* Big enough to hold even a 64-bit pts no */
+	unsigned int ptyno;
+
+	if (ioctl(fd, TIOCGPTN, &ptyno))
+		return NULL;
+
+	snprintf(buffer, sizeof buffer, "/dev/pts/%u", ptyno);
+
+	return buffer;
+}
+
+int unlockpt(int fd)
+{
+	int unlock = 0;
+
+	return ioctl(fd, TIOCSPTLCK, &unlock);
+}