282 lines
11 KiB
C
282 lines
11 KiB
C
/*-
|
|
* 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
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _SYS_TTY_H_
|
|
#define _SYS_TTY_H_
|
|
|
|
#include <sys/termios.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/selinfo.h>
|
|
|
|
/*
|
|
* 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. */
|
|
int c_cbcount; /* Number of cblocks. */
|
|
int c_cbmax; /* Max # cblocks allowed for this clist. */
|
|
int c_cbreserved; /* # cblocks reserved for this 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. */
|
|
int t_line; /* Interface to device drivers. */
|
|
union {
|
|
dev_t t_kdev; /* Device. */
|
|
udev_t t_udev; /* Userland (sysctl) instance. */
|
|
void *t_devp; /* Keep user/kernel size in sync. */
|
|
} ttyu;
|
|
int t_state; /* Device and driver (TS*) state. */
|
|
int t_flags; /* Tty flags. */
|
|
int t_timeout; /* Timeout for ttywait() */
|
|
struct pgrp *t_pgrp; /* Foreground process group. */
|
|
struct session *t_session; /* Enclosing session. */
|
|
struct sigio *t_sigio; /* Information for async I/O. */
|
|
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)(struct tty *);
|
|
/* Stop output. */
|
|
void (*t_stop)(struct tty *, int);
|
|
/* Set hardware state. */
|
|
int (*t_param)(struct tty *, struct termios *);
|
|
void *t_sc; /* XXX: net/if_sl.c:sl_softc. */
|
|
int t_column; /* Tty output column. */
|
|
int t_rocount, t_rocol; /* Tty. */
|
|
int t_ififosize; /* Total size of upstream fifos. */
|
|
int t_ihiwat; /* High water mark for input. */
|
|
int t_ilowat; /* Low water mark for input. */
|
|
speed_t t_ispeedwat; /* t_ispeed override for watermarks. */
|
|
int t_ohiwat; /* High water mark for output. */
|
|
int t_olowat; /* Low water mark for output. */
|
|
speed_t t_ospeedwat; /* t_ospeed override for watermarks. */
|
|
int t_gen; /* Generation number. */
|
|
SLIST_ENTRY(tty) t_list; /* Global chain of ttys for pstat(8) */
|
|
};
|
|
|
|
#define t_cc t_termios.c_cc
|
|
#define t_cflag t_termios.c_cflag
|
|
#define t_dev ttyu.t_kdev
|
|
#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 (PSOCK + 1) /* Sleep priority for tty reads. */
|
|
#define TTOPRI (PSOCK + 2) /* Sleep priority for tty writes. */
|
|
|
|
/*
|
|
* User data unfortunately has to be copied through buffers on the way to
|
|
* and from clists. The buffers are on the stack so their sizes must be
|
|
* fairly small.
|
|
*/
|
|
#define IBUFSIZ 384 /* Should be >= max value of MIN. */
|
|
#define OBUFSIZ 100
|
|
|
|
#ifndef TTYHOG
|
|
#define TTYHOG 1024
|
|
#endif
|
|
|
|
#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_SO_OLOWAT 0x00001 /* Wake up when output <= low water. */
|
|
#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. */
|
|
#ifdef notyet
|
|
#define TS_WOPEN 0x00200 /* Open in progress. */
|
|
#endif
|
|
#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)
|
|
|
|
/* Extras. */
|
|
#define TS_CAN_BYPASS_L_RINT 0x010000 /* Device in "raw" mode. */
|
|
#define TS_CONNECTED 0x020000 /* Connection open. */
|
|
#define TS_SNOOP 0x040000 /* Device is being snooped on. */
|
|
#define TS_SO_OCOMPLETE 0x080000 /* Wake up when output completes. */
|
|
#define TS_ZOMBIE 0x100000 /* Connection lost. */
|
|
|
|
/* Hardware flow-control-invoked bits. */
|
|
#define TS_CAR_OFLOW 0x200000 /* For MDMBUF (XXX handle in driver). */
|
|
#ifdef notyet
|
|
#define TS_CTS_OFLOW 0x400000 /* For CCTS_OFLOW. */
|
|
#define TS_DSR_OFLOW 0x800000 /* For CDSR_OFLOW. */
|
|
#endif
|
|
|
|
/* 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 */
|
|
#define TTY_PE 0x02000000 /* Parity error */
|
|
#define TTY_OE 0x04000000 /* Overrun error */
|
|
#define TTY_BI 0x08000000 /* Break condition */
|
|
|
|
/* 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)
|
|
|
|
/* Unique sleep addresses. */
|
|
#define TSA_CARR_ON(tp) ((void *)&(tp)->t_rawq)
|
|
#define TSA_HUP_OR_INPUT(tp) ((void *)&(tp)->t_rawq.c_cf)
|
|
#define TSA_OCOMPLETE(tp) ((void *)&(tp)->t_outq.c_cl)
|
|
#define TSA_OLOWAT(tp) ((void *)&(tp)->t_outq)
|
|
#define TSA_PTC_READ(tp) ((void *)&(tp)->t_outq.c_cf)
|
|
#define TSA_PTC_WRITE(tp) ((void *)&(tp)->t_rawq.c_cl)
|
|
#define TSA_PTS_READ(tp) ((void *)&(tp)->t_canq)
|
|
|
|
#ifdef _KERNEL
|
|
#ifdef MALLOC_DECLARE
|
|
MALLOC_DECLARE(M_TTYS);
|
|
#endif
|
|
extern struct tty *constty; /* Temporary virtual console. */
|
|
|
|
int b_to_q(char *cp, int cc, struct clist *q);
|
|
void catq(struct clist *from, struct clist *to);
|
|
void clist_alloc_cblocks(struct clist *q, int ccmax, int ccres);
|
|
void clist_free_cblocks(struct clist *q);
|
|
int getc(struct clist *q);
|
|
void ndflush(struct clist *q, int cc);
|
|
char *nextc(struct clist *q, char *cp, int *c);
|
|
void nottystop(struct tty *tp, int rw);
|
|
int putc(int c, struct clist *q);
|
|
int q_to_b(struct clist *q, char *cp, int cc);
|
|
void termioschars(struct termios *t);
|
|
int tputchar(int c, struct tty *tp);
|
|
int ttcompat(struct tty *tp, u_long com, caddr_t data, int flag);
|
|
int ttioctl(struct tty *tp, u_long com, void *data, int flag);
|
|
int ttread(struct tty *tp, struct uio *uio, int flag);
|
|
void ttrstrt(void *tp);
|
|
int ttsetcompat(struct tty *tp, u_long *com, caddr_t data,
|
|
struct termios *term);
|
|
void ttsetwater(struct tty *tp);
|
|
int ttspeedtab(int speed, struct speedtab *table);
|
|
int ttstart(struct tty *tp);
|
|
void ttwakeup(struct tty *tp);
|
|
int ttwrite(struct tty *tp, struct uio *uio, int flag);
|
|
void ttwwakeup(struct tty *tp);
|
|
void ttyblock(struct tty *tp);
|
|
void ttychars(struct tty *tp);
|
|
int ttycheckoutq(struct tty *tp, int wait);
|
|
int ttyclose(struct tty *tp);
|
|
void ttyflush(struct tty *tp, int rw);
|
|
void ttyfree(struct tty *tp);
|
|
void ttyinfo(struct tty *tp);
|
|
int ttyinput(int c, struct tty *tp);
|
|
int ttykqfilter(dev_t dev, struct knote *kn);
|
|
int ttylclose(struct tty *tp, int flag);
|
|
struct tty *ttymalloc(struct tty *tp);
|
|
int ttymodem(struct tty *tp, int flag);
|
|
int ttyopen(dev_t device, struct tty *tp);
|
|
int ttypoll(dev_t dev, int events, struct thread *td);
|
|
int ttyread(dev_t dev, struct uio *uio, int flag);
|
|
void ttyregister(struct tty *tp);
|
|
int ttysleep(struct tty *tp, void *chan, int pri, char *wmesg, int timo);
|
|
int ttywait(struct tty *tp);
|
|
int ttywrite(dev_t dev, struct uio *uio, int flag);
|
|
int unputc(struct clist *q);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS_TTY_H_ */
|