diff --git a/arch/um/include/line.h b/arch/um/include/line.h
new file mode 100644
index 0000000..6d81ecc
--- /dev/null
+++ b/arch/um/include/line.h
@@ -0,0 +1,108 @@
+/* 
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __LINE_H__
+#define __LINE_H__
+
+#include "linux/list.h"
+#include "linux/workqueue.h"
+#include "linux/tty.h"
+#include "linux/interrupt.h"
+#include "asm/semaphore.h"
+#include "chan_user.h"
+#include "mconsole_kern.h"
+
+struct line_driver {
+	char *name;
+	char *device_name;
+	char *devfs_name;
+	short major;
+	short minor_start;
+	short type;
+	short subtype;
+	int read_irq;
+	char *read_irq_name;
+	int write_irq;
+	char *write_irq_name;
+	char *symlink_from;
+	char *symlink_to;
+	struct mc_device mc;
+};
+
+struct line {
+	char *init_str;
+	int init_pri;
+	struct list_head chan_list;
+	int valid;
+	int count;
+	struct semaphore sem;
+	char *buffer;
+	char *head;
+	char *tail;
+	int sigio;
+	struct work_struct task;
+	struct line_driver *driver;
+	int have_irq;
+};
+
+#define LINE_INIT(str, d) \
+	{ init_str :	str, \
+	  init_pri :	INIT_STATIC, \
+	  chan_list : 	{ }, \
+	  valid :	1, \
+	  sem : 	{ }, \
+	  buffer :	NULL, \
+	  head :	NULL, \
+	  tail :	NULL, \
+	  sigio :	0, \
+ 	  driver :	d, \
+          have_irq :	0 }
+
+struct lines {
+	int num;
+};
+
+#define LINES_INIT(n) {  num :		n }
+
+extern void line_close(struct tty_struct *tty, struct file * filp);
+extern int line_open(struct line *lines, struct tty_struct *tty, 
+		     struct chan_opts *opts);
+extern int line_setup(struct line *lines, int num, char *init, 
+		      int all_allowed);
+extern int line_write(struct tty_struct *tty, const unsigned char *buf, int len);
+extern void line_put_char(struct tty_struct *tty, unsigned char ch);
+extern void line_set_termios(struct tty_struct *tty, struct termios * old);
+extern int line_chars_in_buffer(struct tty_struct *tty);
+extern int line_write_room(struct tty_struct *tty);
+extern int line_ioctl(struct tty_struct *tty, struct file * file,
+		      unsigned int cmd, unsigned long arg);
+extern char *add_xterm_umid(char *base);
+extern int line_setup_irq(int fd, int input, int output, struct tty_struct *tty);
+extern void line_close_chan(struct line *line);
+extern void line_disable(struct tty_struct *tty, int current_irq);
+extern struct tty_driver * line_register_devfs(struct lines *set, 
+				struct line_driver *line_driver, 
+				struct tty_operations *driver,
+				struct line *lines,
+				int nlines);
+extern void lines_init(struct line *lines, int nlines);
+extern void close_lines(struct line *lines, int nlines);
+extern int line_config(struct line *lines, int num, char *str);
+extern int line_remove(struct line *lines, int num, char *str);
+extern int line_get_config(char *dev, struct line *lines, int num, char *str, 
+			   int size, char **error_out);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */