/* $NetBSD: tty.h,v 1.70.6.1 2006/06/03 19:44:04 kardel Exp $ */ /*- * 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. 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 8.7 (Berkeley) 1/9/95 */ #ifndef _SYS_TTY_H_ #define _SYS_TTY_H_ #include #include #include /* For struct selinfo. */ #include #include #include /* * Clists are actually ring buffers. The c_cc, c_cf, c_cl fields have * exactly the same behaviour as in true clists. * if c_cq is NULL, the ring buffer has no TTY_QUOTE functionality * (but, saves memory and CPU time) * * *DON'T* play with c_cs, c_ce, c_cq, or c_cl outside tty_subr.c!!! */ struct clist { int c_cc; /* count of characters in queue */ int c_cn; /* total ring buffer length */ u_char *c_cf; /* points to first character */ u_char *c_cl; /* points to next open character */ u_char *c_cs; /* start of ring buffer */ u_char *c_ce; /* c_ce + c_len */ u_char *c_cq; /* N bits/bytes long, see tty_subr.c */ }; /* * 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 { TAILQ_ENTRY(tty) tty_link; /* Link in global tty list. */ struct simplelock t_slock; /* mutex for all access to this 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. */ struct callout t_rstrt_ch; /* for delayed output start */ long t_outcc; /* Output queue statistics. */ struct linesw *t_linesw; /* Interface to device drivers. */ dev_t t_dev; /* Device. */ int t_state; /* Device and driver (TS*) state. */ int t_wopen; /* Processes waiting for open. */ 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)(struct tty *); /* Set hardware state. */ int (*t_param)(struct tty *, struct termios *); /* Set hardware flow control. */ int (*t_hwiflow)(struct tty *, int); 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 __TTY_ENABLE_SLOCK #ifdef __TTY_ENABLE_SLOCK #define TTY_LOCK(tp) simple_lock(&(tp)->t_slock) #define TTY_UNLOCK(tp) simple_unlock(&(tp)->t_slock) #else /* __TTY_ENABLE_SLOCK */ #define TTY_LOCK(tp) /**/ #define TTY_UNLOCK(tp) /**/ #endif /* __TTY_ENABLE_SLOCK */ #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_oflag t_termios.c_oflag #define t_ospeed t_termios.c_ospeed #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 /* _KERNEL */ /* 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_DIALOUT 0x00010 /* Tty used for dialout. */ #define TS_FLUSH 0x00020 /* Outq has been flushed during DMA. */ #define TS_ISOPEN 0x00040 /* Open has completed. */ #define TS_TBLOCK 0x00080 /* Further input blocked. */ #define TS_TIMEOUT 0x00100 /* Wait for output char processing. */ #define TS_TTSTOP 0x00200 /* Output paused. */ #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) /* * ttylist_head is defined here so that user-land has access to it. */ TAILQ_HEAD(ttylist_head, tty); /* the ttylist is a TAILQ */ #ifdef _KERNEL #include MALLOC_DECLARE(M_TTYS); extern int tty_count; /* number of ttys in global ttylist */ extern struct ttychars ttydefaults; /* Symbolic sleep message strings. */ extern const char ttyin[], ttyout[], ttopen[], ttclos[], ttybg[], ttybuf[]; int b_to_q(const u_char *, int, struct clist *); void catq(struct clist *, struct clist *); void clist_init(void); int getc(struct clist *); void ndflush(struct clist *, int); int ndqb(struct clist *, int); u_char *nextc(struct clist *, u_char *, int *); int putc(int, struct clist *); int q_to_b(struct clist *, u_char *, int); int unputc(struct clist *); int nullmodem(struct tty *, int); int tputchar(int, int, struct tty *); int ttioctl(struct tty *, u_long, caddr_t, int, struct lwp *); int ttread(struct tty *, struct uio *, int); void ttrstrt(void *); int ttpoll(struct tty *, int, struct lwp *); void ttsetwater(struct tty *); int ttspeedtab(int, const struct speedtab *); int ttstart(struct tty *); void ttwakeup(struct tty *); int ttwrite(struct tty *, struct uio *, int); void ttychars(struct tty *); int ttycheckoutq(struct tty *, int); int ttyclose(struct tty *); void ttyflush(struct tty *, int); void ttyinfo(struct tty *, int); int ttyinput(int, struct tty *); int ttylclose(struct tty *, int); int ttylopen(dev_t, struct tty *); int ttykqfilter(dev_t, struct knote *); int ttymodem(struct tty *, int); int ttyopen(struct tty *, int, int); int ttyoutput(int, struct tty *); void ttypend(struct tty *); void ttyretype(struct tty *); void ttyrub(int, struct tty *); int ttysleep(struct tty *, void *, int, const char *, int); int ttywait(struct tty *); int ttywflush(struct tty *); void tty_attach(struct tty *); void tty_detach(struct tty *); struct tty *ttymalloc(void); void ttyfree(struct tty *); u_char *firstc(struct clist *, int *); int clalloc(struct clist *, int, int); void clfree(struct clist *); #if defined(_KERNEL_OPT) #include "opt_compat_freebsd.h" #include "opt_compat_sunos.h" #include "opt_compat_svr4.h" #include "opt_compat_43.h" #include "opt_compat_osf1.h" #endif #if defined(COMPAT_43) || defined(COMPAT_SUNOS) || defined(COMPAT_SVR4) || \ defined(COMPAT_FREEBSD) || defined(COMPAT_OSF1) || defined(LKM) # define COMPAT_OLDTTY int ttcompat(struct tty *, u_long, caddr_t, int, struct lwp *); #endif #endif /* _KERNEL */ #endif /* !_SYS_TTY_H_ */