BSD 4.4 Lite Kernel Sources

1 files changed, 217 insertions, 0 deletions

diff --git a/sys/sys/tty.h b/sys/sys/tty.h
new file mode 100644
index 0000000..4a89b03
--- /dev/null
+++ b/sys/sys/tty.h
@@ -0,0 +1,217 @@
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)tty.h	8.6 (Berkeley) 1/21/94
+ */
+
+#include <sys/termios.h>
+#include <sys/select.h>		/* For struct selinfo. */
+
+/*
+ * Clists are character lists, which is a variable length linked list
+ * of cblocks, with a count of the number of characters in the list.
+ */
+struct clist {
+	int	c_cc;		/* Number of characters in the clist. */
+	char	*c_cf;		/* Pointer to the first cblock. */
+	char	*c_cl;		/* Pointer to the last cblock. */
+};
+
+/*
+ * Per-tty structure.
+ *
+ * Should be split in two, into device and tty drivers.
+ * Glue could be masks of what to echo and circular buffer
+ * (low, high, timeout).
+ */
+struct tty {
+	struct	clist t_rawq;		/* Device raw input queue. */
+	long	t_rawcc;		/* Raw input queue statistics. */
+	struct	clist t_canq;		/* Device canonical queue. */
+	long	t_cancc;		/* Canonical queue statistics. */
+	struct	clist t_outq;		/* Device output queue. */
+	long	t_outcc;		/* Output queue statistics. */
+	char	t_line;			/* Interface to device drivers. */
+	dev_t	t_dev;			/* Device. */
+	int	t_state;		/* Device and driver (TS*) state. */
+	int	t_flags;		/* Tty flags. */
+	struct	pgrp *t_pgrp;		/* Foreground process group. */
+	struct	session *t_session;	/* Enclosing session. */
+	struct	selinfo t_rsel;		/* Tty read/oob select. */
+	struct	selinfo t_wsel;		/* Tty write select. */
+	struct	termios t_termios;	/* Termios state. */
+	struct	winsize t_winsize;	/* Window size. */
+					/* Start output. */
+	void	(*t_oproc) __P((struct tty *));
+					/* Stop output. */
+	void	(*t_stop) __P((struct tty *, int));
+					/* Set hardware state. */
+	int	(*t_param) __P((struct tty *, struct termios *));
+	void	*t_sc;			/* XXX: net/if_sl.c:sl_softc. */
+	short	t_column;		/* Tty output column. */
+	short	t_rocount, t_rocol;	/* Tty. */
+	short	t_hiwat;		/* High water mark. */
+	short	t_lowat;		/* Low water mark. */
+	short	t_gen;			/* Generation number. */
+};
+
+#define	t_cc		t_termios.c_cc
+#define	t_cflag		t_termios.c_cflag
+#define	t_iflag		t_termios.c_iflag
+#define	t_ispeed	t_termios.c_ispeed
+#define	t_lflag		t_termios.c_lflag
+#define	t_min		t_termios.c_min
+#define	t_oflag		t_termios.c_oflag
+#define	t_ospeed	t_termios.c_ospeed
+#define	t_time		t_termios.c_time
+
+#define	TTIPRI	25			/* Sleep priority for tty reads. */
+#define	TTOPRI	26			/* Sleep priority for tty writes. */
+
+#define	TTMASK	15
+#define	OBUFSIZ	100
+#define	TTYHOG	1024
+
+#ifdef KERNEL
+#define	TTMAXHIWAT	roundup(2048, CBSIZE)
+#define	TTMINHIWAT	roundup(100, CBSIZE)
+#define	TTMAXLOWAT	256
+#define	TTMINLOWAT	32
+#endif
+
+/* These flags are kept in t_state. */
+#define	TS_ASLEEP	0x00001		/* Process waiting for tty. */
+#define	TS_ASYNC	0x00002		/* Tty in async I/O mode. */
+#define	TS_BUSY		0x00004		/* Draining output. */
+#define	TS_CARR_ON	0x00008		/* Carrier is present. */
+#define	TS_FLUSH	0x00010		/* Outq has been flushed during DMA. */
+#define	TS_ISOPEN	0x00020		/* Open has completed. */
+#define	TS_TBLOCK	0x00040		/* Further input blocked. */
+#define	TS_TIMEOUT	0x00080		/* Wait for output char processing. */
+#define	TS_TTSTOP	0x00100		/* Output paused. */
+#define	TS_WOPEN	0x00200		/* Open in progress. */
+#define	TS_XCLUDE	0x00400		/* Tty requires exclusivity. */
+
+/* State for intra-line fancy editing work. */
+#define	TS_BKSL		0x00800		/* State for lowercase \ work. */
+#define	TS_CNTTB	0x01000		/* Counting tab width, ignore FLUSHO. */
+#define	TS_ERASE	0x02000		/* Within a \.../ for PRTRUB. */
+#define	TS_LNCH		0x04000		/* Next character is literal. */
+#define	TS_TYPEN	0x08000		/* Retyping suspended input (PENDIN). */
+#define	TS_LOCAL	(TS_BKSL | TS_CNTTB | TS_ERASE | TS_LNCH | TS_TYPEN)
+
+/* Character type information. */
+#define	ORDINARY	0
+#define	CONTROL		1
+#define	BACKSPACE	2
+#define	NEWLINE		3
+#define	TAB		4
+#define	VTAB		5
+#define	RETURN		6
+
+struct speedtab {
+	int sp_speed;			/* Speed. */
+	int sp_code;			/* Code. */
+};
+
+/* Modem control commands (driver). */
+#define	DMSET		0
+#define	DMBIS		1
+#define	DMBIC		2
+#define	DMGET		3
+
+/* Flags on a character passed to ttyinput. */
+#define	TTY_CHARMASK	0x000000ff	/* Character mask */
+#define	TTY_QUOTE	0x00000100	/* Character quoted */
+#define	TTY_ERRORMASK	0xff000000	/* Error mask */
+#define	TTY_FE		0x01000000	/* Framing error or BREAK condition */
+#define	TTY_PE		0x02000000	/* Parity error */
+
+/* Is tp controlling terminal for p? */
+#define	isctty(p, tp)							\
+	((p)->p_session == (tp)->t_session && (p)->p_flag & P_CONTROLT)
+
+/* Is p in background of tp? */
+#define	isbackground(p, tp)						\
+	(isctty((p), (tp)) && (p)->p_pgrp != (tp)->t_pgrp)
+
+#ifdef KERNEL
+extern	struct ttychars ttydefaults;
+
+/* Symbolic sleep message strings. */
+extern	 char ttyin[], ttyout[], ttopen[], ttclos[], ttybg[], ttybuf[];
+
+int	 b_to_q __P((char *cp, int cc, struct clist *q));
+void	 catq __P((struct clist *from, struct clist *to));
+void	 clist_init __P((void));
+int	 getc __P((struct clist *q));
+void	 ndflush __P((struct clist *q, int cc));
+int	 ndqb __P((struct clist *q, int flag));
+char	*nextc __P((struct clist *q, char *cp, int *c));
+int	 putc __P((int c, struct clist *q));
+int	 q_to_b __P((struct clist *q, char *cp, int cc));
+int	 unputc __P((struct clist *q));
+
+int	 nullmodem __P((struct tty *tp, int flag));
+int	 tputchar __P((int c, struct tty *tp));
+int	 ttioctl __P((struct tty *tp, int com, void *data, int flag));
+int	 ttread __P((struct tty *tp, struct uio *uio, int flag));
+void	 ttrstrt __P((void *tp));
+int	 ttselect __P((dev_t device, int rw, struct proc *p));
+void	 ttsetwater __P((struct tty *tp));
+int	 ttspeedtab __P((int speed, struct speedtab *table));
+int	 ttstart __P((struct tty *tp));
+void	 ttwakeup __P((struct tty *tp));
+int	 ttwrite __P((struct tty *tp, struct uio *uio, int flag));
+void	 ttychars __P((struct tty *tp));
+int	 ttycheckoutq __P((struct tty *tp, int wait));
+int	 ttyclose __P((struct tty *tp));
+void	 ttyflush __P((struct tty *tp, int rw));
+void	 ttyinfo __P((struct tty *tp));
+int	 ttyinput __P((int c, struct tty *tp));
+int	 ttylclose __P((struct tty *tp, int flag));
+int	 ttymodem __P((struct tty *tp, int flag));
+int	 ttyopen __P((dev_t device, struct tty *tp));
+int	 ttyoutput __P((int c, struct tty *tp));
+void	 ttypend __P((struct tty *tp));
+void	 ttyretype __P((struct tty *tp));
+void	 ttyrub __P((int c, struct tty *tp));
+int	 ttysleep __P((struct tty *tp,
+	    void *chan, int pri, char *wmesg, int timeout));
+int	 ttywait __P((struct tty *tp));
+int	 ttywflush __P((struct tty *tp));
+#endif