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- /* systty.h - System-dependent definitions for terminals.
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU Emacs is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifdef HAVE_TERMIOS
- #define HAVE_TCATTR
- #endif
-
- /* Include the proper files. */
- #ifdef HAVE_TERMIO
- #ifdef __DGUX
- #include <sys/ioctl.h>
- #endif
- #ifndef NO_TERMIO
- #include <termio.h>
- #endif /* not NO_TERMIO */
- #include <fcntl.h>
- #else
- #ifdef HAVE_TERMIOS
- #if defined(_AIX) && defined(_I386)
- #include <termios.h> /* termios.h needs to be before termio.h */
- #include <termio.h>
- #else
- #include <termio.h>
- #include <termios.h>
- #endif /* _AIX && _I386 */
- #include <fcntl.h>
- #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
- #ifndef VMS
- #include <sgtty.h>
- #else /* VMS */
- #include <descrip.h>
- static struct iosb
- {
- short status;
- short offset;
- short termlen;
- short term;
- } input_iosb;
-
- extern int waiting_for_ast;
- extern int stop_input;
- #if 0 /* VAX C doeasn't understand initializing declarations */
- extern int input_ef = 0;
- extern int timer_ef = 0;
- extern int process_ef = 0;
- #else
- extern int input_ef;
- extern int timer_ef;
- extern int process_ef;
- #endif
- extern int input_eflist;
- extern int timer_eflist;
-
- static $DESCRIPTOR (input_dsc, "TT");
- static int terminator_mask[2] = { 0, 0 };
-
- static struct sensemode {
- short status;
- unsigned char xmit_baud;
- unsigned char rcv_baud;
- unsigned char crfill;
- unsigned char lffill;
- unsigned char parity;
- unsigned char unused;
- char class;
- char type;
- short scr_wid;
- unsigned long tt_char : 24, scr_len : 8;
- unsigned long tt2_char;
- } sensemode_iosb;
- #endif /* VMS */
- #endif /* not HAVE_TERMIOS */
- #endif /* not HAVE_TERMIO */
-
- #ifdef AIX
- /* Get files for keyboard remapping */
- #define HFNKEYS 2
- #include <sys/hft.h>
- #include <sys/devinfo.h>
- #endif
-
- /* Get rid of LLITOUT in 4.1, since it is said to stimulate kernel bugs. */
- #ifdef BSD4_1
- #undef LLITOUT
- #define LLITOUT 0
- #endif /* 4.1 */
-
- #ifdef NEED_BSDTTY
- #include <sys/bsdtty.h>
- #endif
-
- #if defined (HPUX) && defined (HAVE_PTYS)
- #include <sys/ptyio.h>
- #endif
-
- #ifdef AIX
- #include <sys/pty.h>
- #include <unistd.h>
- #endif /* AIX */
-
- #ifdef IRIX4
- /* Get _getpty prototype */
- #include <unistd.h>
- #endif
-
- #ifdef SYSV_PTYS
- #include <sys/types.h>
- #include <sys/tty.h>
- #ifdef titan
- #include <sys/ttyhw.h>
- #include <sys/stream.h>
- #endif
- #ifndef NO_PTY_H
- #include <sys/pty.h>
- #endif
- #endif
-
- /* saka@pfu.fujitsu.co.JP writes:
- FASYNC defined in this file. But, FASYNC don't working.
- so no problem, because unrequest_sigio only need. */
- #if defined (pfa)
- #include <sys/file.h>
- #endif
-
-
- /* Special cases - inhibiting the use of certain features. */
-
- #ifdef APOLLO
- #undef TIOCSTART
- #endif
-
- #ifdef XENIX
- #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
- #endif
-
- #ifdef BROKEN_TIOCGETC
- #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
- #endif
-
- /* UNIPLUS systems may have FIONREAD. */
- #ifdef UNIPLUS
- #include <sys.ioctl.h>
- #endif
-
- /* Allow m- file to inhibit use of FIONREAD. */
- #ifdef BROKEN_FIONREAD
- #undef FIONREAD
- #undef ASYNC
- #endif
-
- /* Interrupt input is not used if there is no FIONREAD. */
- #ifndef FIONREAD
- #undef SIGIO
- #endif
-
- /* On TERMIOS systems, the tcmumbleattr calls take care of these
- parameters, and it's a bad idea to use them (on AIX, it makes the
- tty hang for a long time). */
- #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
- #define HAVE_LTCHARS
- #endif
-
- #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
- #define HAVE_TCHARS
- #endif
-
-
- /* Try to establish the correct character to disable terminal functions
- in a system-independent manner. Note that USG (at least) define
- _POSIX_VDISABLE as 0! */
-
- #ifdef _POSIX_VDISABLE
- #define CDISABLE _POSIX_VDISABLE
- #else /* not _POSIX_VDISABLE */
- #ifdef CDEL
- #undef CDISABLE
- #define CDISABLE CDEL
- #else /* not CDEL */
- #define CDISABLE 255
- #endif /* not CDEL */
- #endif /* not _POSIX_VDISABLE */
-
- /* Get the number of characters queued for output. */
-
- /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
- queued for output to the terminal FD in *SIZE, if FD is a tty.
- Returns -1 if there was an error (i.e. FD is not a tty), 0
- otherwise. */
- #ifdef TIOCOUTQ
- #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TIOCOUTQ, (size)))
- #endif
-
- #ifdef HAVE_TERMIO
- #ifdef TCOUTQ
- #undef EMACS_OUTQSIZE
- #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TCOUTQ, (size)))
- #endif
- #endif
-
-
- /* Manipulate a terminal's current process group. */
-
- /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
- controlling process group.
-
- EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
- current process group. Return -1 if there is an error.
-
- EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
- current process group to *PGID. Return -1 if there is an error. */
-
- #ifdef HPUX
- /* HPUX tty process group stuff doesn't work, says the anonymous voice
- from the past. */
- #else
- #ifdef TIOCGPGRP
- #define EMACS_HAVE_TTY_PGRP
- #else
- #ifdef HAVE_TERMIOS
- #define EMACS_HAVE_TTY_PGRP
- #endif
- #endif
- #endif
-
- #ifdef EMACS_HAVE_TTY_PGRP
-
- #ifdef HAVE_TERMIOS
-
- #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp ((fd)))
- #define EMACS_SET_TTY_PGRP(fd, pgid) (tcsetpgrp ((fd), *(pgid)))
-
- #else
- #ifdef TIOCSPGRP
-
- #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
- #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
-
- #endif
- #endif
-
- #else
-
- /* Just ignore this for now and hope for the best */
- #define EMACS_GET_TTY_PGRP(fd, pgid) 0
- #define EMACS_SET_TTY_PGRP(fd, pgif) 0
-
- #endif
-
-
- /* Manipulate a TTY's input/output processing parameters. */
-
- /* struct emacs_tty is a structure used to hold the current tty
- parameters. If the terminal has several structures describing its
- state, for example a struct tchars, a struct sgttyb, a struct
- tchars, a struct ltchars, and a struct pagechars, struct
- emacs_tty should contain an element for each parameter struct
- that Emacs may change.
-
- EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
- of the tty on FD in *P. Return zero if all's well, or -1 if we ran
- into an error we couldn't deal with.
-
- EMACS_SET_TTY (int FD, struct emacs_tty *P, int waitp)
- sets the parameters of the tty on FD according to the contents of
- *P. If waitp is non-zero, we wait for all queued output to be
- written before making the change; otherwise, we forget any queued
- input and make the change immediately.
- Return 0 if all went well, and -1 if anything failed.
-
- EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
- expands tabs to spaces upon output; in that case, there is no
- advantage to using tabs over spaces. */
-
-
- /* For each tty parameter structure that Emacs might want to save and restore,
- - include an element for it in this structure, and
- - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
- new members. */
-
- struct emacs_tty {
-
- /* There is always one of the following elements, so there is no need
- for dummy get and set definitions. */
- #ifdef HAVE_TCATTR
- struct termios main;
- #else
- #ifdef HAVE_TERMIO
- struct termio main;
- #else
- #ifdef VMS
- struct sensemode main;
- #else
- struct sgttyb main;
- #endif
- #endif
- #endif
-
- /* If we have TERMIOS, we don't need to do this - they're taken care of
- by the tc*attr calls. */
- #ifndef HAVE_TERMIOS
- #ifdef HAVE_LTCHARS
- struct ltchars ltchars;
- #endif
-
- #ifdef HAVE_TCHARS
- struct tchars tchars;
- int lmode;
- #endif
- #endif
- };
-
- /* Define EMACS_GET_TTY and EMACS_SET_TTY,
- the macros for reading and setting parts of `struct emacs_tty'.
-
- These got pretty unmanageable (huge macros are hard to debug), and
- finally needed some code which couldn't be done as part of an
- expression, so we moved them out to their own functions in sysdep.c. */
- #define EMACS_GET_TTY(fd, p) (emacs_get_tty ((fd), (p)))
- #define EMACS_SET_TTY(fd, p, waitp) (emacs_set_tty ((fd), (p), (waitp)))
-
-
- /* Define EMACS_TTY_TABS_OK. */
-
- #ifdef HAVE_TERMIOS
-
- #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
-
- #else /* not def HAVE_TERMIOS */
- #ifdef HAVE_TERMIO
-
- #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
-
- #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
- #ifdef VMS
-
- #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
-
- #else
-
- #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
-
- #endif /* not def VMS */
- #endif /* not def HAVE_TERMIO */
- #endif /* not def HAVE_TERMIOS */
-