/*- * 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. * * %sccs.include.redist.c% * * @(#)tty.h 8.7 (Berkeley) 01/09/95 */ #include #include /* 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. */ u_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, u_long 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