/*- * Copyright (c) 1982, 1986 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. * * from: @(#)tty.h 7.10 (Berkeley) 6/26/91 * $Id: tty.h,v 1.4 1993/10/16 17:18:06 rgrimes Exp $ */ #ifndef _SYS_TTY_H_ #define _SYS_TTY_H_ #include/* * Ring buffers provide a contiguous, dense storage for * character data used by the tty driver. */ #define RBSZ 1024 struct ringb { char *rb_hd; /* head of buffer segment to be read */ char *rb_tl; /* tail of buffer segment to be written */ char rb_buf[RBSZ]; /* segment contents */ }; #define RB_SUCC(rbp, p) \ ((p) >= (rbp)->rb_buf + RBSZ - 1 ? (rbp)->rb_buf : (p) + 1) #define RB_ROLLOVER(rbp, p) \ ((p) > (rbp)->rb_buf + RBSZ - 1 ? (rbp)->rb_buf : (p)) #define RB_PRED(rbp, p) \ ((p) <= (rbp)->rb_buf ? (rbp)->rb_buf + RBSZ - 1 : (p) - 1) #define RB_LEN(rp) \ ((rp)->rb_hd <= (rp)->rb_tl ? (rp)->rb_tl - (rp)->rb_hd : \ RBSZ - ((rp)->rb_hd - (rp)->rb_tl)) #define RB_CONTIGPUT(rp) \ (RB_PRED(rp, (rp)->rb_hd) < (rp)->rb_tl ? \ (rp)->rb_buf + RBSZ - (rp)->rb_tl : \ RB_PRED(rp, (rp)->rb_hd) - (rp)->rb_tl) #define RB_CONTIGGET(rp) \ ((rp)->rb_hd <= (rp)->rb_tl ? (rp)->rb_tl - (rp)->rb_hd : \ (rp)->rb_buf + RBSZ - (rp)->rb_hd) /* * 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 { int (*t_oproc)(); /* device */ int (*t_param)(); /* device */ pid_t t_rsel; /* tty */ pid_t t_wsel; 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 */ short t_mask; /* interrupt mask */ struct ringb t_raw; /* ring buffers */ struct ringb t_can; struct ringb t_out; }; #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 (RBSZ/2) /* XXX */ #define TTMINHIWAT 128 #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_RCOLL 0x000800 /* collision in read select */ #define TS_WCOLL 0x001000 /* collision in write select */ #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 #endif /* _SYS_TTY_H_ */