5bbae50149
On RELENG_6 (and probably RELENG_7) we see our syscons windows and pseudo-terminals have the following buffer sizes: | LINE RAW CAN OUT IHIWT ILOWT OHWT LWT COL STATE SESS PGID DISC | ttyv0 0 0 0 7680 6720 2052 256 7 OCcl 1146 1146 term | ttyp0 0 0 0 7680 6720 1296 256 0 OCc 82033 82033 term These buffer sizes make no sense, because we often have much more output than input, but I guess having higher input buffer sizes improves guarantees of the system. On MPSAFE TTY I just sent both the input and output buffer sizes to 7 KB, which is pretty big on a standard FreeBSD install with 8 syscons windows and some PTY's. Reduce the baud rate to 9600 baud, which means we now have the following buffer sizes: | LINE INQ CAN LIN LOW OUTQ USE LOW COL SESS PGID STATE | ttyv0 1920 0 0 192 1984 0 199 7 2401 2401 Oil | pts/0 1920 0 0 192 1984 0 199 5631 1305 2526 Oi This is a lot smaller, but for pseudo-devices this should be good enough. You need to do a lot of punching to fill up a 7.5 KB input buffer. If it turns out things don't work out this way, we'll just switch to 19200 baud.
105 lines
3.7 KiB
C
105 lines
3.7 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ttydefaults.h 8.4 (Berkeley) 1/21/94
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* $FreeBSD$
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*/
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/*
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* System wide defaults for terminal state.
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*/
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#ifndef _SYS_TTYDEFAULTS_H_
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#define _SYS_TTYDEFAULTS_H_
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/*
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* Defaults on "first" open.
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*/
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#define TTYDEF_IFLAG (BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
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#define TTYDEF_OFLAG (OPOST | ONLCR)
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#define TTYDEF_LFLAG_NOECHO (ICANON | ISIG | IEXTEN)
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#define TTYDEF_LFLAG_ECHO (TTYDEF_LFLAG_NOECHO \
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| ECHO | ECHOE | ECHOKE | ECHOCTL)
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#define TTYDEF_LFLAG TTYDEF_LFLAG_ECHO
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#define TTYDEF_CFLAG (CREAD | CS8 | HUPCL)
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#define TTYDEF_SPEED (B9600)
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/*
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* Control Character Defaults
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*/
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/*
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* XXX: A lot of code uses lowercase characters, but control-character
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* conversion is actually only valid when applied to uppercase
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* characters. We just treat lowercase characters as if they were
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* inserted as uppercase.
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*/
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#define CTRL(x) ((x) >= 'a' && (x) <= 'z' ? \
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((x) - 'a' + 1) : (((x) - 'A' + 1) & 0x7f))
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#define CEOF CTRL('D')
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#define CEOL 0xff /* XXX avoid _POSIX_VDISABLE */
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#define CERASE CTRL('?')
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#define CERASE2 CTRL('H')
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#define CINTR CTRL('C')
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#define CSTATUS CTRL('T')
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#define CKILL CTRL('U')
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#define CMIN 1
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#define CQUIT CTRL('\\')
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#define CSUSP CTRL('Z')
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#define CTIME 0
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#define CDSUSP CTRL('Y')
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#define CSTART CTRL('Q')
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#define CSTOP CTRL('S')
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#define CLNEXT CTRL('V')
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#define CDISCARD CTRL('O')
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#define CWERASE CTRL('W')
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#define CREPRINT CTRL('R')
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#define CEOT CEOF
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/* compat */
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#define CBRK CEOL
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#define CRPRNT CREPRINT
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#define CFLUSH CDISCARD
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/* PROTECTED INCLUSION ENDS HERE */
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#endif /* !_SYS_TTYDEFAULTS_H_ */
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/*
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* #define TTYDEFCHARS to include an array of default control characters.
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*/
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#ifdef TTYDEFCHARS
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static cc_t ttydefchars[NCCS] = {
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CEOF, CEOL, CEOL, CERASE, CWERASE, CKILL, CREPRINT,
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CERASE2, CINTR, CQUIT, CSUSP, CDSUSP, CSTART, CSTOP, CLNEXT,
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CDISCARD, CMIN, CTIME, CSTATUS, _POSIX_VDISABLE
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};
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#undef TTYDEFCHARS
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#endif
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