Simplify termio code.

All non-MSDOS non-WINDOWSNT platforms define HAVE_TERMIOS, so
HAVE_TERMIO code is obsolete.
Replace HAVE_TERMIOS conditionals with !DOS_NT.
* src/systty.h: Do not define HAVE_TCATTR.
Remove HAVE_TERMIO, HAVE_LTCHARS and HAVE_TCHARS code.
Do not define EMACS_HAVE_TTY_PGRP.  Only define
EMACS_GET_TTY_PGRP for !DOS_NT.
* src/sysdep.c: Include sysselect.h unconditionally.  Do not include
sys/ioctl.h and termios.h, systty.h does it.  Use
HAVE_SYS_UTSNAME_H instead of USG as an include guard.
(init_baud_rate): Remove HAVE_TERMIO code.
(child_setup_tty): Remove HAVE_TERMIO code.
(emacs_get_tty, emacs_set_tty): Remove HAVE_TERMIO, HAVE_TCHARS
and HAVE_LTCHARS code.  Use !DOS_NT instead of HAVE_TCATTR.
(new_ltchars, new_tchars): Remove, unused.
(init_sys_modes): Remove HAVE_TERMIO, HAVE_TCHARS and HAVE_LTCHARS
code.  Remove special casing for __mips__, it was a no-op.  Remove
HAVE_TCATTR conditional, it is implied by HAVE_TERMIOS.
(init_sys_modes): Remove HPUX special case.
* src/process.c: Include stdlib.h unconditionally.  Do not include
fcntl.h, systty.h does it.  Remove conditional code for
HAVE_SERIAL, it is always true.
(process_send_signal): Remove HAVE_TERMIOS conditional, it's
always true when SIGNALS_VIA_CHARACTERS is true.
(Fcontinue_process, Fprocess_send_eof): Simplify conditionals:
!WINDOWSNT means HAVE_TERMIOS.
(create_process): Remove HAVE_TERMIOS, it's inside a HAVE_PTYS
conditional, which is true for all HAVE_TERMIOS systems.
* src/keyboard.c (init_keyboard): Do not use HAVE_TERMIO, use !DOS_NT
instead of HAVE_TERMIOS.
* src/emacs.c (shut_down_emacs): Use !defined DOS_NT instead of
EMACS_HAVE_TTY_PGRP.
* src/callproc.c (child_setup): Move EMACS_SET_TTY_PGRP use to the
non-MSDOS, non-WINDOWSNT code, it's only defined for such systems
anyway.

1 files changed, 11 insertions, 169 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index 2ae3c509522..e7d35d46bf7 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -35,15 +35,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 
 #include "lisp.h"
-/* Including stdlib.h isn't necessarily enough to get srandom
-   declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2.  */
-
-/* The w32 build defines select stuff in w32.h, which is included by
-   sys/select.h (included below).   */
-#ifndef WINDOWSNT
 #include "sysselect.h"
-#endif
-
 #include "blockinput.h"
 
 #ifdef WINDOWSNT
@@ -84,17 +76,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <fcntl.h>
 #endif
 
-#ifndef MSDOS
-#include <sys/ioctl.h>
-#endif
-
 #include "systty.h"
 #include "syswait.h"
 
-#if defined (USG)
+#ifdef HAVE_SYS_UTSNAME_H
 #include <sys/utsname.h>
 #include <memory.h>
-#endif /* USG */
+#endif /* HAVE_SYS_UTSNAME_H */
 
 #include "keyboard.h"
 #include "frame.h"
@@ -149,17 +137,6 @@ static const int baud_convert[] =
     1800, 2400, 4800, 9600, 19200, 38400
   };
 
-#ifdef HAVE_SPEED_T
-#include <termios.h>
-#else
-#if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
-#else
-#if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
-#include <termios.h>
-#endif
-#endif
-#endif
-
 int emacs_ospeed;
 
 void croak (char *) NO_RETURN;
@@ -308,32 +285,11 @@ init_baud_rate (int fd)
 #ifdef DOS_NT
     emacs_ospeed = 15;
 #else  /* not DOS_NT */
-#ifdef HAVE_TERMIOS
       struct termios sg;
 
       sg.c_cflag = B9600;
       tcgetattr (fd, &sg);
       emacs_ospeed = cfgetospeed (&sg);
-#else /* not TERMIOS */
-#ifdef HAVE_TERMIO
-      struct termio sg;
-
-      sg.c_cflag = B9600;
-#ifdef HAVE_TCATTR
-      tcgetattr (fd, &sg);
-#else
-      ioctl (fd, TCGETA, &sg);
-#endif
-      emacs_ospeed = sg.c_cflag & CBAUD;
-#else /* neither TERMIOS nor TERMIO */
-      struct sgttyb sg;
-
-      sg.sg_ospeed = B9600;
-      if (ioctl (fd, TIOCGETP, &sg) < 0)
-	abort ();
-      emacs_ospeed = sg.sg_ospeed;
-#endif /* not HAVE_TERMIO */
-#endif /* not HAVE_TERMIOS */
 #endif /* not DOS_NT */
     }
 
@@ -417,7 +373,7 @@ wait_for_termination (int pid)
 void
 flush_pending_output (int channel)
 {
-#ifdef HAVE_TERMIOS
+#ifndef DOS_NT
   /* If we try this, we get hit with SIGTTIN, because
      the child's tty belongs to the child's pgrp. */
 #else
@@ -447,8 +403,6 @@ child_setup_tty (int out)
   struct emacs_tty s;
 
   EMACS_GET_TTY (out, &s);
-
-#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
   s.main.c_oflag |= OPOST;	/* Enable output postprocessing */
   s.main.c_oflag &= ~ONLCR;	/* Disable map of NL to CR-NL on output */
 #ifdef NLDLY
@@ -526,19 +480,7 @@ child_setup_tty (int out)
   s.main.c_cc[VTIME] = 0;
 #endif
 
-#else /* not HAVE_TERMIO */
-
-  s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE
-		       | CBREAK | TANDEM);
-  s.main.sg_flags |= LPASS8;
-  s.main.sg_erase = 0377;
-  s.main.sg_kill = 0377;
-  s.lmode = LLITOUT | s.lmode;        /* Don't strip 8th bit */
-
-#endif /* not HAVE_TERMIO */
-
   EMACS_SET_TTY (out, &s, 0);
-
 #endif /* not WINDOWSNT */
 }
 #endif	/* MSDOS */
@@ -841,38 +783,11 @@ int
 emacs_get_tty (int fd, struct emacs_tty *settings)
 {
   /* Retrieve the primary parameters - baud rate, character size, etcetera.  */
-#ifdef HAVE_TCATTR
+#ifndef DOS_NT
   /* We have those nifty POSIX tcmumbleattr functions.  */
   memset (&settings->main, 0, sizeof (settings->main));
   if (tcgetattr (fd, &settings->main) < 0)
     return -1;
-
-#else
-#ifdef HAVE_TERMIO
-  /* The SYSV-style interface?  */
-  if (ioctl (fd, TCGETA, &settings->main) < 0)
-    return -1;
-
-#else
-#ifndef DOS_NT
-  /* I give up - I hope you have the BSD ioctls.  */
-  if (ioctl (fd, TIOCGETP, &settings->main) < 0)
-    return -1;
-#endif /* not DOS_NT */
-#endif
-#endif
-
-  /* Suivant - Do we have to get struct ltchars data?  */
-#ifdef HAVE_LTCHARS
-  if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0)
-    return -1;
-#endif
-
-  /* How about a struct tchars and a wordful of lmode bits?  */
-#ifdef HAVE_TCHARS
-  if (ioctl (fd, TIOCGETC, &settings->tchars) < 0
-      || ioctl (fd, TIOCLGET, &settings->lmode) < 0)
-    return -1;
 #endif
 
   /* We have survived the tempest.  */
@@ -888,7 +803,7 @@ int
 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp)
 {
   /* Set the primary parameters - baud rate, character size, etcetera.  */
-#ifdef HAVE_TCATTR
+#ifndef DOS_NT
   int i;
   /* We have those nifty POSIX tcmumbleattr functions.
      William J. Smith <wjs@wiis.wang.com> writes:
@@ -926,34 +841,6 @@ emacs_set_tty (int fd, struct emacs_tty *settings, int flushp)
 	else
 	  continue;
       }
-
-#else
-#ifdef HAVE_TERMIO
-  /* The SYSV-style interface?  */
-  if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0)
-    return -1;
-
-#else
-#ifndef DOS_NT
-  /* I give up - I hope you have the BSD ioctls.  */
-  if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
-    return -1;
-#endif /* not DOS_NT */
-
-#endif
-#endif
-
-  /* Suivant - Do we have to get struct ltchars data?  */
-#ifdef HAVE_LTCHARS
-  if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0)
-    return -1;
-#endif
-
-  /* How about a struct tchars and a wordful of lmode bits?  */
-#ifdef HAVE_TCHARS
-  if (ioctl (fd, TIOCSETC, &settings->tchars) < 0
-      || ioctl (fd, TIOCLSET, &settings->lmode) < 0)
-    return -1;
 #endif
 
   /* We have survived the tempest.  */
@@ -976,13 +863,6 @@ unsigned char _sobuf[BUFSIZ+8];
 char _sobuf[BUFSIZ];
 #endif
 
-#ifdef HAVE_LTCHARS
-static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1};
-#endif
-#ifdef HAVE_TCHARS
-static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1};
-#endif
-
 /* Initialize the terminal mode on all tty devices that are currently
    open. */
 
@@ -1016,7 +896,7 @@ init_sys_modes (struct tty_display_info *tty_out)
 
   tty = *tty_out->old_tty;
 
-#if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
+#if !defined (DOS_NT)
   XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]);
 
   tty.main.c_iflag |= (IGNBRK);	/* Ignore break condition */
@@ -1088,12 +968,11 @@ init_sys_modes (struct tty_display_info *tty_out)
 					   of C-z */
 #endif /* VSWTCH */
 
-#if defined (__mips__) || defined (HAVE_TCATTR)
 #ifdef VSUSP
-  tty.main.c_cc[VSUSP] = CDISABLE;	/* Turn off mips handling of C-z.  */
+  tty.main.c_cc[VSUSP] = CDISABLE;	/* Turn off handling of C-z.  */
 #endif /* VSUSP */
 #ifdef V_DSUSP
-  tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y.  */
+  tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off handling of C-y.  */
 #endif /* V_DSUSP */
 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP.  */
   tty.main.c_cc[VDSUSP] = CDISABLE;
@@ -1129,7 +1008,6 @@ init_sys_modes (struct tty_display_info *tty_out)
       tty.main.c_cc[VSTOP] = CDISABLE;
 #endif /* VSTOP */
     }
-#endif /* mips or HAVE_TCATTR */
 
 #ifdef AIX
   tty.main.c_cc[VSTRT] = CDISABLE;
@@ -1152,41 +1030,8 @@ init_sys_modes (struct tty_display_info *tty_out)
   tty.main.c_iflag &= ~IGNBRK;
   tty.main.c_iflag &= ~BRKINT;
 #endif
-#else /* if not HAVE_TERMIO */
-#ifndef DOS_NT
-  XSETINT (Vtty_erase_char, tty.main.sg_erase);
-  tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS);
-  if (meta_key)
-    tty.main.sg_flags |= ANYP;
-  tty.main.sg_flags |= interrupt_input ? RAW : CBREAK;
 #endif /* not DOS_NT */
-#endif /* not HAVE_TERMIO */
-
-  /* If going to use CBREAK mode, we must request C-g to interrupt
-     and turn off start and stop chars, etc.  If not going to use
-     CBREAK mode, do this anyway so as to turn off local flow
-     control for user coming over network on 4.2; in this case,
-     only t_stopc and t_startc really matter.  */
-#ifndef HAVE_TERMIO
-#ifdef HAVE_TCHARS
-  /* Note: if not using CBREAK mode, it makes no difference how we
-     set this */
-  tty.tchars = new_tchars;
-  tty.tchars.t_intrc = quit_char;
-  if (tty_out->flow_control)
-    {
-      tty.tchars.t_startc = '\021';
-      tty.tchars.t_stopc = '\023';
-    }
 
-  tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | tty_out->old_tty.lmode;
-
-#endif /* HAVE_TCHARS */
-#endif /* not HAVE_TERMIO */
-
-#ifdef HAVE_LTCHARS
-  tty.ltchars = new_ltchars;
-#endif /* HAVE_LTCHARS */
 #ifdef MSDOS	/* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
   if (!tty_out->term_initted)
     internal_terminal_init ();
@@ -1205,7 +1050,7 @@ init_sys_modes (struct tty_display_info *tty_out)
   if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0);
 #endif
 
-#if defined (HAVE_TERMIOS) || defined (HPUX)
+#if !defined (DOS_NT)
 #ifdef TCOON
   if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON);
 #endif
@@ -2688,7 +2533,7 @@ strsignal (int code)
 }
 #endif /* HAVE_STRSIGNAL */
 
-#ifdef HAVE_TERMIOS
+#ifndef DOS_NT
 /* For make-serial-process  */
 int
 serial_open (char *port)
@@ -2717,9 +2562,6 @@ serial_open (char *port)
 
   return fd;
 }
-#endif /* TERMIOS  */
-
-#ifdef HAVE_TERMIOS
 
 #if !defined (HAVE_CFMAKERAW)
 /* Workaround for targets which are missing cfmakeraw.  */
@@ -2906,7 +2748,7 @@ serial_configure (struct Lisp_Process *p,
   p->childp = childp2;
 
 }
-#endif /* TERMIOS  */
+#endif /* not DOS_NT  */
 
 /* System depended enumeration of and access to system processes a-la ps(1).  */