1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)tty.h 7.8 (Berkeley) 12/16/90 7 */ 8 9 #include <sys/termios.h> 10 11 /* 12 * A clist structure is the head of a linked list queue 13 * of characters. The characters are stored in blocks 14 * containing a link and CBSIZE (param.h) characters. 15 * The routines in tty_subr.c manipulate these structures. 16 */ 17 struct clist { 18 int c_cc; /* character count */ 19 char *c_cf; /* pointer to first char */ 20 char *c_cl; /* pointer to last char */ 21 }; 22 23 /* 24 * Per-tty structure. 25 * 26 * Should be split in two, into device and tty drivers. 27 * Glue could be masks of what to echo and circular buffer 28 * (low, high, timeout). 29 */ 30 struct tty { 31 struct clist t_rawq; /* queues */ 32 struct clist t_canq; 33 struct clist t_outq; 34 int (*t_oproc)(); /* device */ 35 int (*t_param)(); /* device */ 36 struct proc *t_rsel; /* tty */ 37 struct proc *t_wsel; 38 caddr_t T_LINEP; /* XXX */ 39 caddr_t t_addr; /* ??? */ 40 dev_t t_dev; /* device */ 41 int t_flags; /* (compat) some of both */ 42 int t_state; /* some of both */ 43 struct session *t_session; /* tty */ 44 struct pgrp *t_pgrp; /* foreground process group */ 45 char t_line; /* glue */ 46 short t_col; /* tty */ 47 short t_rocount, t_rocol; /* tty */ 48 short t_hiwat; /* hi water mark */ 49 short t_lowat; /* low water mark */ 50 struct winsize t_winsize; /* window size */ 51 struct termios t_termios; /* termios state */ 52 #define t_iflag t_termios.c_iflag 53 #define t_oflag t_termios.c_oflag 54 #define t_cflag t_termios.c_cflag 55 #define t_lflag t_termios.c_lflag 56 #define t_min t_termios.c_min 57 #define t_time t_termios.c_time 58 #define t_cc t_termios.c_cc 59 #define t_ispeed t_termios.c_ispeed 60 #define t_ospeed t_termios.c_ospeed 61 long t_cancc; /* stats */ 62 long t_rawcc; 63 long t_outcc; 64 short t_gen; /* generation number */ 65 }; 66 67 #define TTIPRI 28 68 #define TTOPRI 29 69 70 /* limits */ 71 #define TTMASK 15 72 #define OBUFSIZ 100 73 #define TTYHOG 1024 74 #ifdef KERNEL 75 #define TTMAXHIWAT roundup(2048, CBSIZE) 76 #define TTMINHIWAT roundup(100, CBSIZE) 77 #define TTMAXLOWAT 256 78 #define TTMINLOWAT 32 79 extern struct ttychars ttydefaults; 80 #endif /*KERNEL*/ 81 82 /* internal state bits */ 83 #define TS_TIMEOUT 0x000001 /* delay timeout in progress */ 84 #define TS_WOPEN 0x000002 /* waiting for open to complete */ 85 #define TS_ISOPEN 0x000004 /* device is open */ 86 #define TS_FLUSH 0x000008 /* outq has been flushed during DMA */ 87 #define TS_CARR_ON 0x000010 /* software copy of carrier-present */ 88 #define TS_BUSY 0x000020 /* output in progress */ 89 #define TS_ASLEEP 0x000040 /* wakeup when output done */ 90 #define TS_XCLUDE 0x000080 /* exclusive-use flag against open */ 91 #define TS_TTSTOP 0x000100 /* output stopped by ctl-s */ 92 #define TS_HUPCLS 0x000200 /* hang up upon last close */ 93 #define TS_TBLOCK 0x000400 /* tandem queue blocked */ 94 #define TS_RCOLL 0x000800 /* collision in read select */ 95 #define TS_WCOLL 0x001000 /* collision in write select */ 96 #define TS_ASYNC 0x004000 /* tty in async i/o mode */ 97 /* state for intra-line fancy editing work */ 98 #define TS_BKSL 0x010000 /* state for lowercase \ work */ 99 #define TS_ERASE 0x040000 /* within a \.../ for PRTRUB */ 100 #define TS_LNCH 0x080000 /* next character is literal */ 101 #define TS_TYPEN 0x100000 /* retyping suspended input (PENDIN) */ 102 #define TS_CNTTB 0x200000 /* counting tab width, leave FLUSHO alone */ 103 104 #define TS_LOCAL (TS_BKSL|TS_ERASE|TS_LNCH|TS_TYPEN|TS_CNTTB) 105 106 /* define partab character types */ 107 #define ORDINARY 0 108 #define CONTROL 1 109 #define BACKSPACE 2 110 #define NEWLINE 3 111 #define TAB 4 112 #define VTAB 5 113 #define RETURN 6 114 115 struct speedtab { 116 int sp_speed; 117 int sp_code; 118 }; 119 /* 120 * Flags on character passed to ttyinput 121 */ 122 #define TTY_CHARMASK 0x000000ff /* Character mask */ 123 #define TTY_QUOTE 0x00000100 /* Character quoted */ 124 #define TTY_ERRORMASK 0xff000000 /* Error mask */ 125 #define TTY_FE 0x01000000 /* Framing error or BREAK condition */ 126 #define TTY_PE 0x02000000 /* Parity error */ 127 128 /* 129 * Is tp controlling terminal for p 130 */ 131 #define isctty(p, tp) ((p)->p_session == (tp)->t_session && \ 132 (p)->p_flag&SCTTY) 133 /* 134 * Is p in background of tp 135 */ 136 #define isbackground(p, tp) (isctty((p), (tp)) && \ 137 (p)->p_pgrp != (tp)->t_pgrp) 138 /* 139 * Modem control commands (driver). 140 */ 141 #define DMSET 0 142 #define DMBIS 1 143 #define DMBIC 2 144 #define DMGET 3 145 146 #ifdef KERNEL 147 /* symbolic sleep message strings */ 148 extern char ttyin[], ttyout[], ttopen[], ttclos[], ttybg[], ttybuf[]; 149 #endif 150