Annotation of src/sys/sys/tty.h, Revision 1.29
1.29 ! christos 1: /* $NetBSD: tty.h,v 1.28 1995/03/26 20:24:57 jtc Exp $ */
1.25 cgd 2:
3: /*-
4: * Copyright (c) 1982, 1986, 1993
5: * The Regents of the University of California. All rights reserved.
6: * (c) UNIX System Laboratories, Inc.
7: * All or some portions of this file are derived from material licensed
8: * to the University of California by American Telephone and Telegraph
9: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10: * the permission of UNIX System Laboratories, Inc.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the University of
23: * California, Berkeley and its contributors.
24: * 4. Neither the name of the University nor the names of its contributors
25: * may be used to endorse or promote products derived from this software
26: * without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38: * SUCH DAMAGE.
39: *
40: * @(#)tty.h 8.6 (Berkeley) 1/21/94
41: */
42:
43: #include <sys/termios.h>
44: #include <sys/select.h> /* For struct selinfo. */
45:
46: #ifndef REAL_CLISTS
47: /*
48: * Clists are actually ring buffers. The c_cc, c_cf, c_cl fields have
49: * exactly the same behaviour as in true clists.
50: * if c_cq is NULL, the ring buffer has no TTY_QUOTE functionality
51: * (but, saves memory and cpu time)
52: *
53: * *DON'T* play with c_cs, c_ce, c_cq, or c_cl outside tty_subr.c!!!
54: */
55: struct clist {
56: int c_cc; /* count of characters in queue */
57: int c_cn; /* total ring buffer length */
58: u_char *c_cf; /* points to first character */
59: u_char *c_cl; /* points to next open character */
60: u_char *c_cs; /* start of ring buffer */
61: u_char *c_ce; /* c_ce + c_len */
62: u_char *c_cq; /* N bits/bytes long, see tty_subr.c */
63: };
64: #else
65: /*
66: * Clists are character lists, which is a variable length linked list
67: * of cblocks, with a count of the number of characters in the list.
68: */
69: struct clist {
70: int c_cc; /* Number of characters in the clist. */
71: u_char *c_cf; /* Pointer to the first cblock. */
72: u_char *c_cl; /* Pointer to the last cblock. */
73: };
74: #endif
75:
76: /*
77: * Per-tty structure.
78: *
79: * Should be split in two, into device and tty drivers.
80: * Glue could be masks of what to echo and circular buffer
81: * (low, high, timeout).
82: */
83: struct tty {
84: struct clist t_rawq; /* Device raw input queue. */
85: long t_rawcc; /* Raw input queue statistics. */
86: struct clist t_canq; /* Device canonical queue. */
87: long t_cancc; /* Canonical queue statistics. */
88: struct clist t_outq; /* Device output queue. */
89: long t_outcc; /* Output queue statistics. */
1.26 cgd 90: u_char t_line; /* Interface to device drivers. */
1.25 cgd 91: dev_t t_dev; /* Device. */
92: int t_state; /* Device and driver (TS*) state. */
93: int t_flags; /* Tty flags. */
94: struct pgrp *t_pgrp; /* Foreground process group. */
95: struct session *t_session; /* Enclosing session. */
96: struct selinfo t_rsel; /* Tty read/oob select. */
97: struct selinfo t_wsel; /* Tty write select. */
98: struct termios t_termios; /* Termios state. */
99: struct winsize t_winsize; /* Window size. */
100: /* Start output. */
101: void (*t_oproc) __P((struct tty *));
102: /* Set hardware state. */
103: int (*t_param) __P((struct tty *, struct termios *));
104: /* Set hardware flow control. */
105: int (*t_hwiflow) __P((struct tty *tp, int flag));
106: void *t_sc; /* XXX: net/if_sl.c:sl_softc. */
107: short t_column; /* Tty output column. */
108: short t_rocount, t_rocol; /* Tty. */
109: short t_hiwat; /* High water mark. */
110: short t_lowat; /* Low water mark. */
111: short t_gen; /* Generation number. */
112: };
113:
114: #define t_cc t_termios.c_cc
115: #define t_cflag t_termios.c_cflag
116: #define t_iflag t_termios.c_iflag
117: #define t_ispeed t_termios.c_ispeed
118: #define t_lflag t_termios.c_lflag
119: #define t_min t_termios.c_min
120: #define t_oflag t_termios.c_oflag
121: #define t_ospeed t_termios.c_ospeed
122: #define t_time t_termios.c_time
123:
124: #define TTIPRI 25 /* Sleep priority for tty reads. */
125: #define TTOPRI 26 /* Sleep priority for tty writes. */
126:
127: #define TTMASK 15
128: #define OBUFSIZ 100
129: #define TTYHOG 1024
130:
1.28 jtc 131: #ifdef _KERNEL
1.25 cgd 132: #define TTMAXHIWAT roundup(2048, CBSIZE)
133: #define TTMINHIWAT roundup(100, CBSIZE)
134: #define TTMAXLOWAT 256
135: #define TTMINLOWAT 32
136: #endif
137:
138: /* These flags are kept in t_state. */
139: #define TS_ASLEEP 0x00001 /* Process waiting for tty. */
140: #define TS_ASYNC 0x00002 /* Tty in async I/O mode. */
141: #define TS_BUSY 0x00004 /* Draining output. */
142: #define TS_CARR_ON 0x00008 /* Carrier is present. */
143: #define TS_FLUSH 0x00010 /* Outq has been flushed during DMA. */
144: #define TS_ISOPEN 0x00020 /* Open has completed. */
145: #define TS_TBLOCK 0x00040 /* Further input blocked. */
146: #define TS_TIMEOUT 0x00080 /* Wait for output char processing. */
147: #define TS_TTSTOP 0x00100 /* Output paused. */
148: #define TS_WOPEN 0x00200 /* Open in progress. */
149: #define TS_XCLUDE 0x00400 /* Tty requires exclusivity. */
150:
151: /* State for intra-line fancy editing work. */
152: #define TS_BKSL 0x00800 /* State for lowercase \ work. */
153: #define TS_CNTTB 0x01000 /* Counting tab width, ignore FLUSHO. */
154: #define TS_ERASE 0x02000 /* Within a \.../ for PRTRUB. */
155: #define TS_LNCH 0x04000 /* Next character is literal. */
156: #define TS_TYPEN 0x08000 /* Retyping suspended input (PENDIN). */
157: #define TS_LOCAL (TS_BKSL | TS_CNTTB | TS_ERASE | TS_LNCH | TS_TYPEN)
158:
159: /* Character type information. */
160: #define ORDINARY 0
161: #define CONTROL 1
162: #define BACKSPACE 2
163: #define NEWLINE 3
164: #define TAB 4
165: #define VTAB 5
166: #define RETURN 6
167:
168: struct speedtab {
169: int sp_speed; /* Speed. */
170: int sp_code; /* Code. */
171: };
172:
173: /* Modem control commands (driver). */
174: #define DMSET 0
175: #define DMBIS 1
176: #define DMBIC 2
177: #define DMGET 3
178:
179: /* Flags on a character passed to ttyinput. */
180: #define TTY_CHARMASK 0x000000ff /* Character mask */
181: #define TTY_QUOTE 0x00000100 /* Character quoted */
182: #define TTY_ERRORMASK 0xff000000 /* Error mask */
183: #define TTY_FE 0x01000000 /* Framing error or BREAK condition */
184: #define TTY_PE 0x02000000 /* Parity error */
185:
186: /* Is tp controlling terminal for p? */
187: #define isctty(p, tp) \
188: ((p)->p_session == (tp)->t_session && (p)->p_flag & P_CONTROLT)
189:
190: /* Is p in background of tp? */
191: #define isbackground(p, tp) \
192: (isctty((p), (tp)) && (p)->p_pgrp != (tp)->t_pgrp)
193:
1.28 jtc 194: #ifdef _KERNEL
1.25 cgd 195: extern struct ttychars ttydefaults;
196:
197: /* Symbolic sleep message strings. */
198: extern char ttyin[], ttyout[], ttopen[], ttclos[], ttybg[], ttybuf[];
199:
200: int b_to_q __P((u_char *cp, int cc, struct clist *q));
201: void catq __P((struct clist *from, struct clist *to));
202: void clist_init __P((void));
203: int getc __P((struct clist *q));
204: void ndflush __P((struct clist *q, int cc));
205: int ndqb __P((struct clist *q, int flag));
206: u_char *nextc __P((struct clist *q, u_char *cp, int *c));
207: int putc __P((int c, struct clist *q));
208: int q_to_b __P((struct clist *q, u_char *cp, int cc));
209: int unputc __P((struct clist *q));
210:
211: int nullmodem __P((struct tty *tp, int flag));
212: int tputchar __P((int c, struct tty *tp));
1.27 mycroft 213: int ttioctl __P((struct tty *tp, u_long com, caddr_t data, int flag,
1.25 cgd 214: struct proc *p));
215: int ttread __P((struct tty *tp, struct uio *uio, int flag));
216: void ttrstrt __P((void *tp));
217: int ttselect __P((dev_t device, int rw, struct proc *p));
218: void ttsetwater __P((struct tty *tp));
219: int ttspeedtab __P((int speed, struct speedtab *table));
220: int ttstart __P((struct tty *tp));
221: void ttwakeup __P((struct tty *tp));
222: int ttwrite __P((struct tty *tp, struct uio *uio, int flag));
223: void ttychars __P((struct tty *tp));
224: int ttycheckoutq __P((struct tty *tp, int wait));
225: int ttyclose __P((struct tty *tp));
226: void ttyflush __P((struct tty *tp, int rw));
227: void ttyinfo __P((struct tty *tp));
228: int ttyinput __P((int c, struct tty *tp));
229: int ttylclose __P((struct tty *tp, int flag));
230: int ttymodem __P((struct tty *tp, int flag));
231: int ttyopen __P((dev_t device, struct tty *tp));
232: int ttyoutput __P((int c, struct tty *tp));
233: void ttypend __P((struct tty *tp));
234: void ttyretype __P((struct tty *tp));
235: void ttyrub __P((int c, struct tty *tp));
236: int ttysleep __P((struct tty *tp,
237: void *chan, int pri, char *wmesg, int timeout));
238: int ttywait __P((struct tty *tp));
239: int ttywflush __P((struct tty *tp));
240:
241: struct tty *ttymalloc __P((void));
242: void ttyfree __P((struct tty *));
243: u_char *firstc __P((struct clist *clp, int *c));
1.29 ! christos 244:
! 245: int cttyopen __P((dev_t, int, int, struct proc *));
! 246: int cttyread __P((dev_t, struct uio *, int));
! 247: int cttywrite __P((dev_t, struct uio *, int));
! 248: int cttyioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
! 249: int cttyselect __P((dev_t, int, struct proc *));
! 250:
! 251: int clalloc __P((struct clist *, int, int));
! 252: void clfree __P((struct clist *));
! 253:
! 254: #if defined(COMPAT_43) || defined(COMPAT_SUNOS) || defined(COMPAT_SVR4) || \
! 255: defined(COMPAT_FREEBSD)
! 256: # define COMPAT_OLDTTY
! 257: int ttcompat __P((struct tty *, u_long, caddr_t, int, struct proc *));
! 258: #endif
! 259:
1.25 cgd 260: #endif
CVSweb <webmaster@jp.NetBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to tty.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / sys