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26df6d1340
This patch is against the 2.6.34 source.
Paraphrased from the 1989 BSD patch by David Borman @ cray.com:
These are the changes needed for the kernel to support
LINEMODE in the server.
There is a new bit in the termios local flag word, EXTPROC.
When this bit is set, several aspects of the terminal driver
are disabled. Input line editing, character echo, and mapping
of signals are all disabled. This allows the telnetd to turn
off these functions when in linemode, but still keep track of
what state the user wants the terminal to be in.
New ioctl:
TIOCSIG Generate a signal to processes in the
current process group of the pty.
There is a new mode for packet driver, the TIOCPKT_IOCTL bit.
When packet mode is turned on in the pty, and the EXTPROC bit
is set, then whenever the state of the pty is changed, the
next read on the master side of the pty will have the TIOCPKT_IOCTL
bit set. This allows the process on the server side of the pty
to know when the state of the terminal has changed; it can then
issue the appropriate ioctl to retrieve the new state.
Since the original BSD patches accompanied the source code for telnet
I've left that reference here, but obviously the feature is useful for
any remote terminal protocol, including ssh.
The corresponding feature has existed in the BSD tty driver since 1989.
For historical reference, a good copy of the relevant files can be found
here:
http://anonsvn.mit.edu/viewvc/krb5/trunk/src/appl/telnet/?pathrev=17741
Signed-off-by: Howard Chu <hyc@symas.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
236 lines
5.7 KiB
C
236 lines
5.7 KiB
C
/* $Id: termbits.h,v 1.1 2000/07/10 16:32:31 bjornw Exp $ */
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#ifndef __ARCH_ETRAX100_TERMBITS_H__
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#define __ARCH_ETRAX100_TERMBITS_H__
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#include <linux/posix_types.h>
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typedef unsigned char cc_t;
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typedef unsigned int speed_t;
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typedef unsigned int tcflag_t;
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#define NCCS 19
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struct termios {
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tcflag_t c_iflag; /* input mode flags */
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tcflag_t c_oflag; /* output mode flags */
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tcflag_t c_cflag; /* control mode flags */
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tcflag_t c_lflag; /* local mode flags */
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cc_t c_line; /* line discipline */
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cc_t c_cc[NCCS]; /* control characters */
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};
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struct termios2 {
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tcflag_t c_iflag; /* input mode flags */
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tcflag_t c_oflag; /* output mode flags */
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tcflag_t c_cflag; /* control mode flags */
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tcflag_t c_lflag; /* local mode flags */
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cc_t c_line; /* line discipline */
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cc_t c_cc[NCCS]; /* control characters */
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speed_t c_ispeed; /* input speed */
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speed_t c_ospeed; /* output speed */
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};
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struct ktermios {
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tcflag_t c_iflag; /* input mode flags */
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tcflag_t c_oflag; /* output mode flags */
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tcflag_t c_cflag; /* control mode flags */
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tcflag_t c_lflag; /* local mode flags */
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cc_t c_line; /* line discipline */
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cc_t c_cc[NCCS]; /* control characters */
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speed_t c_ispeed; /* input speed */
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speed_t c_ospeed; /* output speed */
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};
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/* c_cc characters */
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#define VINTR 0
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#define VQUIT 1
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#define VERASE 2
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#define VKILL 3
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#define VEOF 4
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#define VTIME 5
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#define VMIN 6
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#define VSWTC 7
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#define VSTART 8
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#define VSTOP 9
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#define VSUSP 10
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#define VEOL 11
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#define VREPRINT 12
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#define VDISCARD 13
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#define VWERASE 14
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#define VLNEXT 15
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#define VEOL2 16
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/* c_iflag bits */
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#define IGNBRK 0000001
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#define BRKINT 0000002
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#define IGNPAR 0000004
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#define PARMRK 0000010
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#define INPCK 0000020
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#define ISTRIP 0000040
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#define INLCR 0000100
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#define IGNCR 0000200
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#define ICRNL 0000400
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#define IUCLC 0001000
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#define IXON 0002000
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#define IXANY 0004000
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#define IXOFF 0010000
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#define IMAXBEL 0020000
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#define IUTF8 0040000
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/* c_oflag bits */
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#define OPOST 0000001
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#define OLCUC 0000002
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#define ONLCR 0000004
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#define OCRNL 0000010
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#define ONOCR 0000020
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#define ONLRET 0000040
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#define OFILL 0000100
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#define OFDEL 0000200
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#define NLDLY 0000400
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#define NL0 0000000
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#define NL1 0000400
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#define CRDLY 0003000
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#define CR0 0000000
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#define CR1 0001000
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#define CR2 0002000
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#define CR3 0003000
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#define TABDLY 0014000
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#define TAB0 0000000
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#define TAB1 0004000
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#define TAB2 0010000
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#define TAB3 0014000
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#define XTABS 0014000
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#define BSDLY 0020000
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#define BS0 0000000
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#define BS1 0020000
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#define VTDLY 0040000
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#define VT0 0000000
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#define VT1 0040000
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#define FFDLY 0100000
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#define FF0 0000000
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#define FF1 0100000
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/* c_cflag bit meaning */
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/*
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* 3 2 1
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* 10 987 654 321 098 765 432 109 876 543 210
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* | | ||| CBAUD
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* obaud
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*
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* ||CSIZE
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*
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* |CSTOP
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* |CREAD
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* |CPARENB
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*
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* |CPARODD
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* |HUPCL
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* |CLOCAL
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* |CBAUDEX
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* 10 987 654 321 098 765 432 109 876 543 210
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* | || || CIBAUD, IBSHIFT=16
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* ibaud
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* |CMSPAR
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* | CRTSCTS
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* x x xxx xxx x x xx Free bits
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*/
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#define CBAUD 0010017
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#define B0 0000000 /* hang up */
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#define B50 0000001
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#define B75 0000002
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#define B110 0000003
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#define B134 0000004
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#define B150 0000005
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#define B200 0000006
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#define B300 0000007
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#define B600 0000010
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#define B1200 0000011
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#define B1800 0000012
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#define B2400 0000013
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#define B4800 0000014
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#define B9600 0000015
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#define B19200 0000016
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#define B38400 0000017
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#define EXTA B19200
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#define EXTB B38400
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#define CSIZE 0000060
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#define CS5 0000000
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#define CS6 0000020
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#define CS7 0000040
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#define CS8 0000060
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#define CSTOPB 0000100
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#define CREAD 0000200
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#define PARENB 0000400
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#define PARODD 0001000
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#define HUPCL 0002000
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#define CLOCAL 0004000
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#define CBAUDEX 0010000
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#define BOTHER 0010000
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#define B57600 0010001
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#define B115200 0010002
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#define B230400 0010003
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#define B460800 0010004
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/* Unsupported rates, but needed to avoid compile error. */
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#define B500000 0010005
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#define B576000 0010006
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#define B1000000 0010010
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#define B1152000 0010011
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#define B1500000 0010012
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#define B2000000 0010013
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#define B2500000 0010014
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#define B3000000 0010015
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#define B3500000 0010016
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#define B4000000 0010017
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/* etrax supports these additional three baud rates */
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#define B921600 0010005
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#define B1843200 0010006
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#define B6250000 0010007
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/* ETRAX FS supports this as well */
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#define B12500000 0010010
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#define CIBAUD 002003600000 /* input baud rate (used in v32) */
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/* The values for CIBAUD bits are the same as the values for CBAUD and CBAUDEX
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* shifted left IBSHIFT bits.
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*/
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#define IBSHIFT 16
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#define CMSPAR 010000000000 /* mark or space (stick) parity - PARODD=space*/
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#define CRTSCTS 020000000000 /* flow control */
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/* c_lflag bits */
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#define ISIG 0000001
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#define ICANON 0000002
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#define XCASE 0000004
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#define ECHO 0000010
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#define ECHOE 0000020
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#define ECHOK 0000040
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#define ECHONL 0000100
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#define NOFLSH 0000200
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#define TOSTOP 0000400
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#define ECHOCTL 0001000
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#define ECHOPRT 0002000
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#define ECHOKE 0004000
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#define FLUSHO 0010000
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#define PENDIN 0040000
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#define IEXTEN 0100000
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#define EXTPROC 0200000
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/* tcflow() and TCXONC use these */
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#define TCOOFF 0
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#define TCOON 1
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#define TCIOFF 2
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#define TCION 3
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/* tcflush() and TCFLSH use these */
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#define TCIFLUSH 0
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#define TCOFLUSH 1
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#define TCIOFLUSH 2
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/* tcsetattr uses these */
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#define TCSANOW 0
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#define TCSADRAIN 1
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#define TCSAFLUSH 2
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#endif
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