4.4BSD/usr/include/sys/tty.h
/*-
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* 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 8.1 (Berkeley) 6/2/93
*/
#include <sys/termios.h>
#include <sys/select.h> /* for struct selinfo */
/*
* Clists are character lists, which is a variable length linked list
* of cblocks, wiht a count of the number of characters in the list.
*/
struct clist {
int c_cc; /* count of characters in queue */
char *c_cf; /* first character/cblock */
char *c_cl; /* last chararacter/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; /* queues */
struct clist t_canq;
struct clist t_outq;
void (*t_oproc)(); /* device */
#ifdef sun4c
void (*t_stop)(); /* device */
#endif
int (*t_param)(); /* device */
struct selinfo t_rsel; /* tty read/oob select */
struct selinfo t_wsel; /* tty write select */
caddr_t T_LINEP; /* XXX */
caddr_t t_addr; /* ??? */
dev_t t_dev; /* device */
int t_flags; /* (compat) some of both */
int t_state; /* some of both */
struct session *t_session; /* tty */
struct pgrp *t_pgrp; /* foreground process group */
char t_line; /* glue */
short t_col; /* tty */
short t_rocount, t_rocol; /* tty */
short t_hiwat; /* hi water mark */
short t_lowat; /* low water mark */
struct winsize t_winsize; /* window size */
struct termios t_termios; /* termios state */
#define t_iflag t_termios.c_iflag
#define t_oflag t_termios.c_oflag
#define t_cflag t_termios.c_cflag
#define t_lflag t_termios.c_lflag
#define t_min t_termios.c_min
#define t_time t_termios.c_time
#define t_cc t_termios.c_cc
#define t_ispeed t_termios.c_ispeed
#define t_ospeed t_termios.c_ospeed
long t_cancc; /* stats */
long t_rawcc;
long t_outcc;
short t_gen; /* generation number */
};
#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
extern struct ttychars ttydefaults;
#endif /* KERNEL */
/* internal state bits */
#define TS_TIMEOUT 0x000001 /* delay timeout in progress */
#define TS_WOPEN 0x000002 /* waiting for open to complete */
#define TS_ISOPEN 0x000004 /* device is open */
#define TS_FLUSH 0x000008 /* outq has been flushed during DMA */
#define TS_CARR_ON 0x000010 /* software copy of carrier-present */
#define TS_BUSY 0x000020 /* output in progress */
#define TS_ASLEEP 0x000040 /* wakeup when output done */
#define TS_XCLUDE 0x000080 /* exclusive-use flag against open */
#define TS_TTSTOP 0x000100 /* output stopped by ctl-s */
/* was TS_HUPCLS 0x000200 * hang up upon last close */
#define TS_TBLOCK 0x000400 /* tandem queue blocked */
#define TS_ASYNC 0x004000 /* tty in async i/o mode */
/* state for intra-line fancy editing work */
#define TS_BKSL 0x010000 /* state for lowercase \ work */
#define TS_ERASE 0x040000 /* within a \.../ for PRTRUB */
#define TS_LNCH 0x080000 /* next character is literal */
#define TS_TYPEN 0x100000 /* retyping suspended input (PENDIN) */
#define TS_CNTTB 0x200000 /* counting tab width, ignore FLUSHO */
#define TS_LOCAL (TS_BKSL|TS_ERASE|TS_LNCH|TS_TYPEN|TS_CNTTB)
/* define partab character types */
#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;
int sp_code;
};
/*
* Flags on 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&SCTTY)
/*
* Is p in background of tp
*/
#define isbackground(p, tp) (isctty((p), (tp)) && \
(p)->p_pgrp != (tp)->t_pgrp)
/*
* Modem control commands (driver).
*/
#define DMSET 0
#define DMBIS 1
#define DMBIC 2
#define DMGET 3
#ifdef KERNEL
/* symbolic sleep message strings */
extern char ttyin[], ttyout[], ttopen[], ttclos[], ttybg[], ttybuf[];
#endif