1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
32 /* Including stdlib.h isn't necessarily enough to get srandom
33 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
35 /* The w32 build defines select stuff in w32.h, which is included by
36 sys/select.h (included below). */
38 #include "sysselect.h"
41 #include "blockinput.h"
45 #define write sys_write
50 #endif /* not WINDOWSNT */
52 /* Does anyone other than VMS need this? */
54 #define sys_fwrite fwrite
59 #include <sys/types.h>
64 #if !defined (USG) || defined (BSD_PGRPS)
66 #define setpgrp setpgid
70 /* Get SI_SRPC_DOMAIN, if it is available. */
71 #ifdef HAVE_SYS_SYSTEMINFO_H
72 #include <sys/systeminfo.h>
75 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
79 #include <sys/param.h>
83 extern unsigned start
__asm__ ("start");
100 #include <sys/ioctl.h>
107 #include <sys/utsname.h>
111 extern int quit_char
;
113 #include "keyboard.h"
116 #include "termhooks.h"
117 #include "termchar.h"
118 #include "termopts.h"
119 #include "dispextern.h"
121 #include "cm.h" /* for reset_sys_modes */
123 /* For serial_configure and serial_open. */
124 extern Lisp_Object QCport
, QCspeed
, QCprocess
;
125 extern Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
126 extern Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
130 /* In process.h which conflicts with the local copy. */
132 int _cdecl
_spawnlp (int, const char *, const char *, ...);
133 int _cdecl
_getpid (void);
134 extern char *getwd (char *);
137 #include "syssignal.h"
144 #ifndef HAVE_STRUCT_UTIMBUF
145 /* We want to use utime rather than utimes, but we couldn't find the
146 structure declaration. We'll use the traditional one. */
154 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
159 static int baud_convert
[] =
161 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
162 1800, 2400, 4800, 9600, 19200, 38400
168 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
170 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
178 void croak
P_ ((char *)) NO_RETURN
;
180 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
182 SIGMASKTYPE sigprocmask_set
;
185 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
187 /* Return the current working directory. Returns NULL on errors.
188 Any other returned value must be freed with free. This is used
189 only when get_current_dir_name is not defined on the system. */
191 get_current_dir_name ()
195 struct stat dotstat
, pwdstat
;
196 /* If PWD is accurate, use it instead of calling getwd. PWD is
197 sometimes a nicer name, and using it may avoid a fatal error if a
198 parent directory is searchable but not readable. */
199 if ((pwd
= getenv ("PWD")) != 0
200 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
201 && stat (pwd
, &pwdstat
) == 0
202 && stat (".", &dotstat
) == 0
203 && dotstat
.st_ino
== pwdstat
.st_ino
204 && dotstat
.st_dev
== pwdstat
.st_dev
206 && strlen (pwd
) < MAXPATHLEN
210 buf
= (char *) malloc (strlen (pwd
) + 1);
218 size_t buf_size
= 1024;
219 buf
= (char *) malloc (buf_size
);
224 if (getcwd (buf
, buf_size
) == buf
)
228 int tmp_errno
= errno
;
234 buf
= (char *) realloc (buf
, buf_size
);
242 /* We need MAXPATHLEN here. */
243 buf
= (char *) malloc (MAXPATHLEN
+ 1);
246 if (getwd (buf
) == NULL
)
248 int tmp_errno
= errno
;
260 /* Discard pending input on all input descriptors. */
266 struct emacs_tty buf
;
271 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
272 while (dos_keyread () != -1)
274 #else /* not MSDOS */
276 struct tty_display_info
*tty
;
277 for (tty
= tty_list
; tty
; tty
= tty
->next
)
279 if (tty
->input
) /* Is the device suspended? */
281 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
282 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
286 #endif /* not MSDOS */
287 #endif /* not WINDOWSNT */
293 /* Arrange for character C to be read as the next input from
295 XXX What if we have multiple ttys?
301 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
304 /* Should perhaps error if in batch mode */
306 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
307 #else /* no TIOCSTI */
308 error ("Cannot stuff terminal input characters in this version of Unix");
309 #endif /* no TIOCSTI */
315 init_baud_rate (int fd
)
323 #else /* not DOS_NT */
329 emacs_ospeed
= cfgetospeed (&sg
);
330 #else /* not TERMIOS */
338 ioctl (fd
, TCGETA
, &sg
);
340 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
341 #else /* neither TERMIOS nor TERMIO */
344 sg
.sg_ospeed
= B9600
;
345 if (ioctl (fd
, TIOCGETP
, &sg
) < 0)
347 emacs_ospeed
= sg
.sg_ospeed
;
348 #endif /* not HAVE_TERMIO */
349 #endif /* not HAVE_TERMIOS */
350 #endif /* not DOS_NT */
353 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
354 ? baud_convert
[emacs_ospeed
] : 9600);
362 set_exclusive_use (fd
)
366 ioctl (fd
, FIOCLEX
, 0);
368 /* Ok to do nothing if this feature does not exist */
373 wait_without_blocking ()
376 wait3 (0, WNOHANG
| WUNTRACED
, 0);
378 croak ("wait_without_blocking");
380 synch_process_alive
= 0;
383 #endif /* not subprocesses */
385 int wait_debugging
; /* Set nonzero to make following function work under dbx
386 (at least for bsd). */
389 wait_for_termination_signal ()
392 /* Wait for subprocess with process id `pid' to terminate and
393 make sure it will get eliminated (not remain forever as a zombie) */
396 wait_for_termination (pid
)
402 #if defined (BSD_SYSTEM) || defined (HPUX)
403 /* Note that kill returns -1 even if the process is just a zombie now.
404 But inevitably a SIGCHLD interrupt should be generated
405 and child_sig will do wait3 and make the process go away. */
406 /* There is some indication that there is a bug involved with
407 termination of subprocesses, perhaps involving a kernel bug too,
408 but no idea what it is. Just as a hunch we signal SIGCHLD to see
409 if that causes the problem to go away or get worse. */
410 sigsetmask (sigmask (SIGCHLD
));
411 if (0 > kill (pid
, 0))
413 sigsetmask (SIGEMPTYMASK
);
414 kill (getpid (), SIGCHLD
);
420 sigpause (SIGEMPTYMASK
);
421 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
422 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
423 sigblock (sigmask (SIGCHLD
));
425 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
427 sigunblock (sigmask (SIGCHLD
));
431 sigsuspend (&empty_mask
);
432 #else /* not POSIX_SIGNALS */
433 #ifdef HAVE_SYSV_SIGPAUSE
435 if (0 > kill (pid
, 0))
441 #else /* not HAVE_SYSV_SIGPAUSE */
445 #else /* not WINDOWSNT */
446 if (0 > kill (pid
, 0))
448 /* Using sleep instead of pause avoids timing error.
449 If the inferior dies just before the sleep,
450 we lose just one second. */
452 #endif /* not WINDOWSNT */
453 #endif /* not HAVE_SYSV_SIGPAUSE */
454 #endif /* not POSIX_SIGNALS */
455 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
456 #else /* not subprocesses */
459 #else /* not __DJGPP__ > 1 */
460 if (kill (pid
, 0) < 0)
463 #endif /* not __DJGPP__ > 1*/
464 #endif /* not subprocesses */
471 * flush any pending output
472 * (may flush input as well; it does not matter the way we use it)
476 flush_pending_output (channel
)
480 /* If we try this, we get hit with SIGTTIN, because
481 the child's tty belongs to the child's pgrp. */
484 ioctl (channel
, TCFLSH
, 1);
488 /* 3rd arg should be ignored
489 but some 4.2 kernels actually want the address of an int
490 and nonzero means something different. */
491 ioctl (channel
, TIOCFLUSH
, &zero
);
497 /* Set up the terminal at the other end of a pseudo-terminal that
498 we will be controlling an inferior through.
499 It should not echo or do line-editing, since that is done
500 in Emacs. No padding needed for insertion into an Emacs buffer. */
503 child_setup_tty (out
)
509 EMACS_GET_TTY (out
, &s
);
511 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
512 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
513 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
515 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
516 Some versions of GNU Hurd do not have FFDLY? */
518 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
519 /* No output delays */
521 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
522 /* No output delays */
525 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
526 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
528 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
531 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
534 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
536 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
537 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
538 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
539 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
540 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
541 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
544 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
547 #ifdef SIGNALS_VIA_CHARACTERS
548 /* the QUIT and INTR character are used in process_send_signal
549 so set them here to something useful. */
550 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
551 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
552 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
553 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
554 #endif /* not SIGNALS_VIA_CHARACTERS */
557 /* AIX enhanced edit loses NULs, so disable it */
560 s
.main
.c_iflag
&= ~ASCEDIT
;
562 /* Also, PTY overloads NUL and BREAK.
563 don't ignore break, but don't signal either, so it looks like NUL. */
564 s
.main
.c_iflag
&= ~IGNBRK
;
565 s
.main
.c_iflag
&= ~BRKINT
;
566 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
567 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
568 would force it to 0377. That looks like duplicated code. */
569 #ifndef SIGNALS_VIA_CHARACTERS
570 /* QUIT and INTR work better as signals, so disable character forms */
571 s
.main
.c_cc
[VQUIT
] = CDISABLE
;
572 s
.main
.c_cc
[VINTR
] = CDISABLE
;
573 s
.main
.c_lflag
&= ~ISIG
;
574 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
575 s
.main
.c_cc
[VEOL
] = CDISABLE
;
576 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
579 #else /* not HAVE_TERMIO */
581 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
583 s
.main
.sg_flags
|= LPASS8
;
584 s
.main
.sg_erase
= 0377;
585 s
.main
.sg_kill
= 0377;
586 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
588 #endif /* not HAVE_TERMIO */
590 EMACS_SET_TTY (out
, &s
, 0);
592 #endif /* not DOS_NT */
595 #endif /* subprocesses */
597 /* Record a signal code and the handler for it. */
601 SIGTYPE (*handler
) P_ ((int));
604 static void save_signal_handlers
P_ ((struct save_signal
*));
605 static void restore_signal_handlers
P_ ((struct save_signal
*));
607 /* Suspend the Emacs process; give terminal to its superior. */
612 #if defined (SIGTSTP) && !defined (MSDOS)
615 int pgrp
= EMACS_GETPGRP (0);
616 EMACS_KILLPG (pgrp
, SIGTSTP
);
619 #else /* No SIGTSTP */
620 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
621 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
622 kill (getpid (), SIGQUIT
);
624 #else /* No SIGTSTP or USG_JOBCTRL */
626 /* On a system where suspending is not implemented,
627 instead fork a subshell and let it talk directly to the terminal
631 #endif /* no USG_JOBCTRL */
632 #endif /* no SIGTSTP */
635 /* Fork a subshell. */
640 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
642 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
645 struct save_signal saved_handlers
[5];
647 unsigned char *str
= 0;
650 saved_handlers
[0].code
= SIGINT
;
651 saved_handlers
[1].code
= SIGQUIT
;
652 saved_handlers
[2].code
= SIGTERM
;
654 saved_handlers
[3].code
= SIGIO
;
655 saved_handlers
[4].code
= 0;
657 saved_handlers
[3].code
= 0;
660 /* Mentioning current_buffer->buffer would mean including buffer.h,
661 which somehow wedges the hp compiler. So instead... */
663 dir
= intern ("default-directory");
664 if (NILP (Fboundp (dir
)))
666 dir
= Fsymbol_value (dir
);
670 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
671 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
673 bcopy (SDATA (dir
), str
, len
);
674 if (str
[len
- 1] != '/') str
[len
++] = '/';
681 save_signal_handlers (saved_handlers
);
682 synch_process_alive
= 1;
683 #endif /* __DJGPP__ > 1 */
687 error ("Can't spawn subshell");
694 #ifdef DOS_NT /* MW, Aug 1993 */
697 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
700 sh
= (char *) egetenv ("SHELL");
704 /* Use our buffer's default directory for the subshell. */
706 chdir ((char *) str
);
709 close_process_descs (); /* Close Emacs's pipes/ptys */
712 #ifdef SET_EMACS_PRIORITY
714 extern EMACS_INT emacs_priority
;
716 if (emacs_priority
< 0)
717 nice (-emacs_priority
);
721 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
723 char *epwd
= getenv ("PWD");
724 char old_pwd
[MAXPATHLEN
+1+4];
726 /* If PWD is set, pass it with corrected value. */
729 strcpy (old_pwd
, epwd
);
730 if (str
[len
- 1] == '/')
732 setenv ("PWD", str
, 1);
737 putenv (old_pwd
); /* restore previous value */
739 #else /* not MSDOS */
741 /* Waits for process completion */
742 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
745 write (1, "Can't execute subshell", 22);
746 #else /* not WINDOWSNT */
747 execlp (sh
, sh
, (char *) 0);
748 write (1, "Can't execute subshell", 22);
750 #endif /* not WINDOWSNT */
751 #endif /* not MSDOS */
754 /* Do this now if we did not do it before. */
755 #if !defined (MSDOS) || __DJGPP__ == 1
756 save_signal_handlers (saved_handlers
);
757 synch_process_alive
= 1;
761 wait_for_termination (pid
);
763 restore_signal_handlers (saved_handlers
);
764 synch_process_alive
= 0;
768 save_signal_handlers (saved_handlers
)
769 struct save_signal
*saved_handlers
;
771 while (saved_handlers
->code
)
773 saved_handlers
->handler
774 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
780 restore_signal_handlers (saved_handlers
)
781 struct save_signal
*saved_handlers
;
783 while (saved_handlers
->code
)
785 signal (saved_handlers
->code
, saved_handlers
->handler
);
791 /* If SIGIO is broken, don't do anything. */
808 unrequest_sigio (void)
815 int old_fcntl_flags
[MAXDESC
];
822 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
823 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
825 interrupts_deferred
= 0;
833 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
837 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
838 /* XXX Uhm, FASYNC is not used anymore here. */
839 /* XXX Yeah, but you need it for SIGIO, don't you? */
848 sigunblock (sigmask (SIGWINCH
));
850 sigunblock (sigmask (SIGIO
));
852 interrupts_deferred
= 0;
856 unrequest_sigio (void)
861 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
867 sigblock (sigmask (SIGWINCH
));
869 sigblock (sigmask (SIGIO
));
870 interrupts_deferred
= 1;
873 #else /* no FASYNC */
879 if (noninteractive
|| read_socket_hook
)
882 croak ("request_sigio");
888 if (noninteractive
|| read_socket_hook
)
891 croak ("unrequest_sigio");
899 /* Saving and restoring the process group of Emacs's terminal. */
903 /* The process group of which Emacs was a member when it initially
906 If Emacs was in its own process group (i.e. inherited_pgroup ==
907 getpid ()), then we know we're running under a shell with job
908 control (Emacs would never be run as part of a pipeline).
911 If Emacs was not in its own process group, then we know we're
912 running under a shell (or a caller) that doesn't know how to
913 separate itself from Emacs (like sh). Emacs must be in its own
914 process group in order to receive SIGIO correctly. In this
915 situation, we put ourselves in our own pgroup, forcibly set the
916 tty's pgroup to our pgroup, and make sure to restore and reinstate
917 the tty's pgroup just like any other terminal setting. If
918 inherited_group was not the tty's pgroup, then we'll get a
919 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
920 it goes foreground in the future, which is what should happen.
922 This variable is initialized in emacs.c. */
923 int inherited_pgroup
;
925 /* Split off the foreground process group to Emacs alone. When we are
926 in the foreground, but not started in our own process group,
927 redirect the tty device handle FD to point to our own process
928 group. We need to be in our own process group to receive SIGIO
931 narrow_foreground_group (int fd
)
935 setpgrp (0, inherited_pgroup
);
937 /* XXX inherited_pgroup should not be zero here, but GTK seems to
939 if (! inherited_pgroup
)
940 abort (); /* Should not happen. */
942 if (inherited_pgroup
!= me
)
943 EMACS_SET_TTY_PGRP (fd
, &me
); /* XXX This only works on the controlling tty. */
947 /* Set the tty to our original foreground group. */
949 widen_foreground_group (int fd
)
951 if (inherited_pgroup
!= getpid ())
952 EMACS_SET_TTY_PGRP (fd
, &inherited_pgroup
);
953 setpgrp (0, inherited_pgroup
);
956 #endif /* BSD_PGRPS */
958 /* Getting and setting emacs_tty structures. */
960 /* Set *TC to the parameters associated with the terminal FD.
961 Return zero if all's well, or -1 if we ran into an error we
962 couldn't deal with. */
964 emacs_get_tty (fd
, settings
)
966 struct emacs_tty
*settings
;
968 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
970 /* We have those nifty POSIX tcmumbleattr functions. */
971 bzero (&settings
->main
, sizeof (settings
->main
));
972 if (tcgetattr (fd
, &settings
->main
) < 0)
977 /* The SYSV-style interface? */
978 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
983 /* I give up - I hope you have the BSD ioctls. */
984 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
986 #endif /* not DOS_NT */
990 /* Suivant - Do we have to get struct ltchars data? */
992 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
996 /* How about a struct tchars and a wordful of lmode bits? */
998 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
999 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1003 /* We have survived the tempest. */
1008 /* Set the parameters of the tty on FD according to the contents of
1009 *SETTINGS. If FLUSHP is non-zero, we discard input.
1010 Return 0 if all went well, and -1 if anything failed. */
1013 emacs_set_tty (fd
, settings
, flushp
)
1015 struct emacs_tty
*settings
;
1018 /* Set the primary parameters - baud rate, character size, etcetera. */
1021 /* We have those nifty POSIX tcmumbleattr functions.
1022 William J. Smith <wjs@wiis.wang.com> writes:
1023 "POSIX 1003.1 defines tcsetattr to return success if it was
1024 able to perform any of the requested actions, even if some
1025 of the requested actions could not be performed.
1026 We must read settings back to ensure tty setup properly.
1027 AIX requires this to keep tty from hanging occasionally." */
1028 /* This make sure that we don't loop indefinitely in here. */
1029 for (i
= 0 ; i
< 10 ; i
++)
1030 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1041 bzero (&new, sizeof (new));
1042 /* Get the current settings, and see if they're what we asked for. */
1043 tcgetattr (fd
, &new);
1044 /* We cannot use memcmp on the whole structure here because under
1045 * aix386 the termios structure has some reserved field that may
1048 if ( new.c_iflag
== settings
->main
.c_iflag
1049 && new.c_oflag
== settings
->main
.c_oflag
1050 && new.c_cflag
== settings
->main
.c_cflag
1051 && new.c_lflag
== settings
->main
.c_lflag
1052 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1060 /* The SYSV-style interface? */
1061 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1066 /* I give up - I hope you have the BSD ioctls. */
1067 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1069 #endif /* not DOS_NT */
1074 /* Suivant - Do we have to get struct ltchars data? */
1076 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1080 /* How about a struct tchars and a wordful of lmode bits? */
1082 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1083 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1087 /* We have survived the tempest. */
1094 int old_fcntl_owner
[MAXDESC
];
1095 #endif /* F_SETOWN */
1097 /* This may also be defined in stdio,
1098 but if so, this does no harm,
1099 and using the same name avoids wasting the other one's space. */
1102 unsigned char _sobuf
[BUFSIZ
+8];
1104 char _sobuf
[BUFSIZ
];
1108 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1111 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1114 /* Initialize the terminal mode on all tty devices that are currently
1118 init_all_sys_modes (void)
1120 struct tty_display_info
*tty
;
1121 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1122 init_sys_modes (tty
);
1125 /* Initialize the terminal mode on the given tty device. */
1128 init_sys_modes (tty_out
)
1129 struct tty_display_info
*tty_out
;
1131 struct emacs_tty tty
;
1133 Vtty_erase_char
= Qnil
;
1138 if (!tty_out
->output
)
1139 return; /* The tty is suspended. */
1143 /* read_socket_hook is not global anymore. I think doing this
1144 unconditionally will not cause any problems. */
1145 if (! read_socket_hook
&& EQ (Vinitial_window_system
, Qnil
))
1147 narrow_foreground_group (fileno (tty_out
->input
));
1150 if (! tty_out
->old_tty
)
1151 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
1153 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
1155 tty
= *tty_out
->old_tty
;
1157 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1158 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
1160 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1161 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1162 #ifdef INLCR /* I'm just being cautious,
1163 since I can't check how widespread INLCR is--rms. */
1164 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1167 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1169 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1170 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1172 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1174 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1175 if (tty_out
->flow_control
)
1177 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1179 tty
.main
.c_iflag
&= ~IXANY
;
1183 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1184 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1186 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1188 if (tty_out
->meta_key
)
1190 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1191 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1194 if (tty_out
->input
== stdin
)
1196 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1197 /* Set up C-g for both SIGQUIT and SIGINT.
1198 We don't know which we will get, but we handle both alike
1199 so which one it really gives us does not matter. */
1200 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1204 /* We normally don't get interrupt or quit signals from tty
1205 devices other than our controlling terminal; therefore,
1206 we must handle C-g as normal input. Unfortunately, this
1207 means that the interrupt and quit feature must be
1208 disabled on secondary ttys, or we would not even see the
1211 Note that even though emacsclient could have special code
1212 to pass SIGINT to Emacs, we should _not_ enable
1213 interrupt/quit keys for emacsclient frames. This means
1214 that we can't break out of loops in C code from a
1215 secondary tty frame, but we can always decide what
1216 display the C-g came from, which is more important from a
1217 usability point of view. (Consider the case when two
1218 people work together using the same Emacs instance.) */
1219 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
1220 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
1222 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1223 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1225 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1229 #if defined (__mips__) || defined (HAVE_TCATTR)
1231 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1234 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1235 #endif /* V_DSUSP */
1236 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1237 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1240 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1243 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1244 #endif /* VREPRINT */
1246 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1247 #endif /* VWERASE */
1249 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1250 #endif /* VDISCARD */
1252 if (tty_out
->flow_control
)
1255 tty
.main
.c_cc
[VSTART
] = '\021';
1258 tty
.main
.c_cc
[VSTOP
] = '\023';
1264 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1267 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1270 #endif /* mips or HAVE_TCATTR */
1274 /* AIX enhanced edit loses NULs, so disable it. */
1275 tty
.main
.c_line
= 0;
1276 tty
.main
.c_iflag
&= ~ASCEDIT
;
1278 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1279 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1280 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1281 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1282 #endif /* IBMR2AIX */
1283 if (tty_out
->flow_control
)
1286 tty
.main
.c_cc
[VSTART
] = '\021';
1289 tty
.main
.c_cc
[VSTOP
] = '\023';
1292 /* Also, PTY overloads NUL and BREAK.
1293 don't ignore break, but don't signal either, so it looks like NUL.
1294 This really serves a purpose only if running in an XTERM window
1295 or via TELNET or the like, but does no harm elsewhere. */
1296 tty
.main
.c_iflag
&= ~IGNBRK
;
1297 tty
.main
.c_iflag
&= ~BRKINT
;
1299 #else /* if not HAVE_TERMIO */
1301 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1302 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1304 tty
.main
.sg_flags
|= ANYP
;
1305 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1306 #endif /* not DOS_NT */
1307 #endif /* not HAVE_TERMIO */
1309 /* If going to use CBREAK mode, we must request C-g to interrupt
1310 and turn off start and stop chars, etc. If not going to use
1311 CBREAK mode, do this anyway so as to turn off local flow
1312 control for user coming over network on 4.2; in this case,
1313 only t_stopc and t_startc really matter. */
1316 /* Note: if not using CBREAK mode, it makes no difference how we
1318 tty
.tchars
= new_tchars
;
1319 tty
.tchars
.t_intrc
= quit_char
;
1320 if (tty_out
->flow_control
)
1322 tty
.tchars
.t_startc
= '\021';
1323 tty
.tchars
.t_stopc
= '\023';
1326 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| tty_out
->old_tty
.lmode
;
1328 #endif /* HAVE_TCHARS */
1329 #endif /* not HAVE_TERMIO */
1332 tty
.ltchars
= new_ltchars
;
1333 #endif /* HAVE_LTCHARS */
1334 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1335 if (!tty_out
->term_initted
)
1336 internal_terminal_init ();
1337 dos_ttraw (tty_out
);
1340 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1342 /* This code added to insure that, if flow-control is not to be used,
1343 we have an unlocked terminal at the start. */
1346 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1349 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1352 #if defined (HAVE_TERMIOS) || defined (HPUX)
1354 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1359 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1360 if (interrupt_input
)
1362 old_fcntl_owner
[fileno (tty_out
->input
)] =
1363 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1364 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1365 init_sigio (fileno (tty_out
->input
));
1367 if (gpm_tty
== tty_out
)
1369 /* Arrange for mouse events to give us SIGIO signals. */
1370 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1371 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1372 init_sigio (gpm_fd
);
1374 #endif /* HAVE_GPM */
1376 #endif /* F_GETOWN */
1377 #endif /* F_SETFL */
1380 /* This symbol is defined on recent USG systems.
1381 Someone says without this call USG won't really buffer the file
1382 even with a call to setbuf. */
1383 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1385 setbuf (tty_out
->output
, (char *) _sobuf
);
1388 if (tty_out
->terminal
->set_terminal_modes_hook
)
1389 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1391 if (!tty_out
->term_initted
)
1393 Lisp_Object tail
, frame
;
1394 FOR_EACH_FRAME (tail
, frame
)
1396 /* XXX This needs to be revised. */
1397 if (FRAME_TERMCAP_P (XFRAME (frame
))
1398 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1399 init_frame_faces (XFRAME (frame
));
1403 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1405 /* XXX This seems wrong on multi-tty. */
1406 if (display_completed
)
1407 direct_output_forward_char (0);
1411 Lisp_Object tail
, frame
;
1413 FOR_EACH_FRAME (tail
, frame
)
1415 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1416 || FRAME_MSDOS_P (XFRAME (frame
)))
1417 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1418 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1422 tty_out
->term_initted
= 1;
1425 /* Return nonzero if safe to use tabs in output.
1426 At the time this is called, init_sys_modes has not been done yet. */
1429 tabs_safe_p (int fd
)
1431 struct emacs_tty etty
;
1433 EMACS_GET_TTY (fd
, &etty
);
1434 return EMACS_TTY_TABS_OK (&etty
);
1437 /* Get terminal size from system.
1438 Store number of lines into *HEIGHTP and width into *WIDTHP.
1439 We store 0 if there's no valid information. */
1442 get_tty_size (int fd
, int *widthp
, int *heightp
)
1448 struct winsize size
;
1450 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1451 *widthp
= *heightp
= 0;
1454 *widthp
= size
.ws_col
;
1455 *heightp
= size
.ws_row
;
1461 /* SunOS - style. */
1462 struct ttysize size
;
1464 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1465 *widthp
= *heightp
= 0;
1468 *widthp
= size
.ts_cols
;
1469 *heightp
= size
.ts_lines
;
1474 *widthp
= ScreenCols ();
1475 *heightp
= ScreenRows ();
1476 #else /* system doesn't know size */
1480 #endif /* not SunOS-style */
1481 #endif /* not BSD-style */
1484 /* Set the logical window size associated with descriptor FD
1485 to HEIGHT and WIDTH. This is used mainly with ptys. */
1488 set_window_size (fd
, height
, width
)
1489 int fd
, height
, width
;
1494 struct winsize size
;
1495 size
.ws_row
= height
;
1496 size
.ws_col
= width
;
1498 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1499 return 0; /* error */
1506 /* SunOS - style. */
1507 struct ttysize size
;
1508 size
.ts_lines
= height
;
1509 size
.ts_cols
= width
;
1511 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1517 #endif /* not SunOS-style */
1518 #endif /* not BSD-style */
1523 /* Prepare all terminal devices for exiting Emacs. */
1526 reset_all_sys_modes (void)
1528 struct tty_display_info
*tty
;
1529 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1530 reset_sys_modes (tty
);
1533 /* Prepare the terminal for closing it; move the cursor to the
1534 bottom of the frame, turn off interrupt-driven I/O, etc. */
1537 reset_sys_modes (tty_out
)
1538 struct tty_display_info
*tty_out
;
1545 if (!tty_out
->term_initted
)
1548 if (!tty_out
->output
)
1549 return; /* The tty is suspended. */
1551 /* Go to and clear the last line of the terminal. */
1553 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1555 /* Code adapted from tty_clear_end_of_line. */
1556 if (tty_out
->TS_clr_line
)
1558 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1561 { /* have to do it the hard way */
1563 tty_turn_off_insert (tty_out
);
1565 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1567 fputc (' ', tty_out
->output
);
1571 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1572 fflush (tty_out
->output
);
1574 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1575 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1578 /* Avoid possible loss of output when changing terminal modes. */
1579 fsync (fileno (tty_out
->output
));
1583 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1584 if (interrupt_input
)
1586 reset_sigio (fileno (tty_out
->input
));
1587 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1588 old_fcntl_owner
[fileno (tty_out
->input
)]);
1590 #endif /* F_SETOWN */
1592 fcntl (fileno (tty_out
->input
), F_SETFL
,
1593 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1595 #endif /* F_SETFL */
1597 if (tty_out
->old_tty
)
1598 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1599 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1602 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1607 widen_foreground_group (fileno (tty_out
->input
));
1613 /* Set up the proper status flags for use of a pty. */
1619 /* I'm told that TOICREMOTE does not mean control chars
1620 "can't be sent" but rather that they don't have
1621 input-editing or signaling effects.
1622 That should be good, because we have other ways
1623 to do those things in Emacs.
1624 However, telnet mode seems not to work on 4.2.
1625 So TIOCREMOTE is turned off now. */
1627 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1628 will hang. In particular, the "timeout" feature (which
1629 causes a read to return if there is no data available)
1630 does this. Also it is known that telnet mode will hang
1631 in such a way that Emacs must be stopped (perhaps this
1632 is the same problem).
1634 If TIOCREMOTE is turned off, then there is a bug in
1635 hp-ux which sometimes loses data. Apparently the
1636 code which blocks the master process when the internal
1637 buffer fills up does not work. Other than this,
1638 though, everything else seems to work fine.
1640 Since the latter lossage is more benign, we may as well
1641 lose that way. -- cph */
1643 #if defined(UNIX98_PTYS)
1646 ioctl (fd
, FIONBIO
, &on
);
1651 #endif /* HAVE_PTYS */
1653 #if !defined(CANNOT_DUMP) || !defined(SYSTEM_MALLOC)
1654 /* Some systems that cannot dump also cannot implement these. */
1657 * Return the address of the start of the text segment prior to
1658 * doing an unexec. After unexec the return value is undefined.
1659 * See crt0.c for further explanation and _start.
1663 #if !(defined (__NetBSD__) && defined (__ELF__))
1664 #ifndef HAVE_TEXT_START
1669 return ((char *) TEXT_START
);
1671 extern int _start ();
1672 return ((char *) _start
);
1673 #endif /* TEXT_START */
1675 #endif /* not HAVE_TEXT_START */
1679 * Return the address of the start of the data segment prior to
1680 * doing an unexec. After unexec the return value is undefined.
1681 * See crt0.c for further information and definition of data_start.
1683 * Apparently, on BSD systems this is etext at startup. On
1684 * USG systems (swapping) this is highly mmu dependent and
1685 * is also dependent on whether or not the program is running
1686 * with shared text. Generally there is a (possibly large)
1687 * gap between end of text and start of data with shared text.
1689 * On Uniplus+ systems with shared text, data starts at a
1690 * fixed address. Each port (from a given oem) is generally
1691 * different, and the specific value of the start of data can
1692 * be obtained via the UniPlus+ specific "uvar" system call,
1693 * however the method outlined in crt0.c seems to be more portable.
1695 * Probably what will have to happen when a USG unexec is available,
1696 * at least on UniPlus, is temacs will have to be made unshared so
1697 * that text and data are contiguous. Then once loadup is complete,
1698 * unexec will produce a shared executable where the data can be
1699 * at the normal shared text boundary and the startofdata variable
1700 * will be patched by unexec to the correct value.
1704 #ifndef start_of_data
1709 return ((char *) DATA_START
);
1711 #ifdef ORDINARY_LINK
1713 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
1714 * data_start isn't defined. We take the address of environ, which
1715 * is known to live at or near the start of the system crt0.c, and
1716 * we don't sweat the handful of bytes that might lose.
1718 extern char **environ
;
1720 return ((char *) &environ
);
1722 extern int data_start
;
1723 return ((char *) &data_start
);
1724 #endif /* ORDINARY_LINK */
1725 #endif /* DATA_START */
1727 #endif /* start_of_data */
1728 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
1730 /* init_system_name sets up the string for the Lisp function
1731 system-name to return. */
1733 extern Lisp_Object Vsystem_name
;
1736 #include <sys/socket.h>
1738 #endif /* HAVE_SOCKETS */
1741 #ifndef HAVE_H_ERRNO
1744 #endif /* TRY_AGAIN */
1749 #ifndef HAVE_GETHOSTNAME
1752 Vsystem_name
= build_string (uts
.nodename
);
1753 #else /* HAVE_GETHOSTNAME */
1754 unsigned int hostname_size
= 256;
1755 char *hostname
= (char *) alloca (hostname_size
);
1757 /* Try to get the host name; if the buffer is too short, try
1758 again. Apparently, the only indication gethostname gives of
1759 whether the buffer was large enough is the presence or absence
1760 of a '\0' in the string. Eech. */
1763 gethostname (hostname
, hostname_size
- 1);
1764 hostname
[hostname_size
- 1] = '\0';
1766 /* Was the buffer large enough for the '\0'? */
1767 if (strlen (hostname
) < hostname_size
- 1)
1770 hostname_size
<<= 1;
1771 hostname
= (char *) alloca (hostname_size
);
1774 /* Turn the hostname into the official, fully-qualified hostname.
1775 Don't do this if we're going to dump; this can confuse system
1776 libraries on some machines and make the dumped emacs core dump. */
1779 #endif /* not CANNOT_DUMP */
1780 if (! index (hostname
, '.'))
1783 #ifdef HAVE_GETADDRINFO
1784 struct addrinfo
*res
;
1785 struct addrinfo hints
;
1788 memset (&hints
, 0, sizeof(hints
));
1789 hints
.ai_socktype
= SOCK_STREAM
;
1790 hints
.ai_flags
= AI_CANONNAME
;
1792 for (count
= 0;; count
++)
1794 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1795 || ret
!= EAI_AGAIN
)
1800 Fsleep_for (make_number (1), Qnil
);
1805 struct addrinfo
*it
= res
;
1808 char *fqdn
= it
->ai_canonname
;
1809 if (fqdn
&& index (fqdn
, '.')
1810 && strcmp (fqdn
, "localhost.localdomain") != 0)
1816 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1817 strcpy (hostname
, it
->ai_canonname
);
1821 #else /* !HAVE_GETADDRINFO */
1823 for (count
= 0;; count
++)
1829 hp
= gethostbyname (hostname
);
1831 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1838 Fsleep_for (make_number (1), Qnil
);
1843 char *fqdn
= (char *) hp
->h_name
;
1845 if (!index (fqdn
, '.'))
1847 /* We still don't have a fully qualified domain name.
1848 Try to find one in the list of alternate names */
1849 char **alias
= hp
->h_aliases
;
1851 && (!index (*alias
, '.')
1852 || !strcmp (*alias
, "localhost.localdomain")))
1859 #endif /* !HAVE_GETADDRINFO */
1861 #endif /* HAVE_SOCKETS */
1862 Vsystem_name
= build_string (hostname
);
1863 #endif /* HAVE_GETHOSTNAME */
1866 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1867 if (*p
== ' ' || *p
== '\t')
1873 #if !defined (HAVE_SELECT)
1875 #include "sysselect.h"
1878 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
1879 /* Cause explanatory error message at compile time,
1880 since the select emulation is not good enough for X. */
1881 int *x
= &x_windows_lose_if_no_select_system_call
;
1884 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
1885 * Only checks read descriptors.
1887 /* How long to wait between checking fds in select */
1888 #define SELECT_PAUSE 1
1891 /* For longjmp'ing back to read_input_waiting. */
1893 jmp_buf read_alarm_throw
;
1895 /* Nonzero if the alarm signal should throw back to read_input_waiting.
1896 The read_socket_hook function sets this to 1 while it is waiting. */
1898 int read_alarm_should_throw
;
1904 signal (SIGALRM
, SIG_IGN
);
1905 SIGNAL_THREAD_CHECK (SIGALRM
);
1906 if (read_alarm_should_throw
)
1907 longjmp (read_alarm_throw
, 1);
1911 /* Only rfds are checked. */
1913 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
1915 SELECT_TYPE
*rfds
, *wfds
, *efds
;
1916 EMACS_TIME
*timeout
;
1918 /* XXX This needs to be updated for multi-tty support. Is there
1919 anybody who needs to emulate select these days? */
1924 extern int proc_buffered_char
[];
1925 #ifndef subprocesses
1926 int process_tick
= 0, update_tick
= 0;
1928 extern int process_tick
, update_tick
;
1932 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
1933 /* If we're using X, then the native select will work; we only need the
1934 emulation for non-X usage. */
1935 if (!NILP (Vinitial_window_system
))
1936 return select (nfds
, rfds
, wfds
, efds
, timeout
);
1938 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
1939 local_timeout
= &timeoutval
;
1951 /* If we are looking only for the terminal, with no timeout,
1952 just read it and wait -- that's more efficient. */
1953 if (*local_timeout
== 100000 && process_tick
== update_tick
1954 && FD_ISSET (0, &orfds
))
1957 for (fd
= 1; fd
< nfds
; ++fd
)
1958 if (FD_ISSET (fd
, &orfds
))
1960 if (! detect_input_pending ())
1961 read_input_waiting ();
1967 /* Once a second, till the timer expires, check all the flagged read
1968 * descriptors to see if any input is available. If there is some then
1969 * set the corresponding bit in the return copy of rfds.
1973 register int to_check
, fd
;
1977 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
1979 if (FD_ISSET (fd
, &orfds
))
1981 int avail
= 0, status
= 0;
1984 avail
= detect_input_pending (); /* Special keyboard handler */
1988 status
= ioctl (fd
, FIONREAD
, &avail
);
1989 #else /* no FIONREAD */
1990 /* Hoping it will return -1 if nothing available
1991 or 0 if all 0 chars requested are read. */
1992 if (proc_buffered_char
[fd
] >= 0)
1996 avail
= read (fd
, &buf
, 1);
1998 proc_buffered_char
[fd
] = buf
;
2000 #endif /* no FIONREAD */
2002 if (status
>= 0 && avail
> 0)
2010 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2013 turn_on_atimers (0);
2014 signal (SIGALRM
, select_alarm
);
2016 alarm (SELECT_PAUSE
);
2018 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2019 while (select_alarmed
== 0 && *local_timeout
!= 0
2020 && process_tick
== update_tick
)
2022 /* If we are interested in terminal input,
2023 wait by reading the terminal.
2024 That makes instant wakeup for terminal input at least. */
2025 if (FD_ISSET (0, &orfds
))
2027 read_input_waiting ();
2028 if (detect_input_pending ())
2034 (*local_timeout
) -= SELECT_PAUSE
;
2036 /* Reset the old alarm if there was one. */
2037 turn_on_atimers (1);
2039 if (*local_timeout
== 0) /* Stop on timer being cleared */
2044 #endif /* not WINDOWSNT */
2046 /* Read keyboard input into the standard buffer,
2047 waiting for at least one character. */
2050 read_input_waiting ()
2052 /* XXX This needs to be updated for multi-tty support. Is there
2053 anybody who needs to emulate select these days? */
2055 extern int quit_char
;
2057 if (read_socket_hook
)
2059 struct input_event hold_quit
;
2061 EVENT_INIT (hold_quit
);
2062 hold_quit
.kind
= NO_EVENT
;
2064 read_alarm_should_throw
= 0;
2065 if (! setjmp (read_alarm_throw
))
2066 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2070 if (hold_quit
.kind
!= NO_EVENT
)
2071 kbd_buffer_store_event (&hold_quit
);
2075 struct input_event e
;
2077 nread
= read (fileno (stdin
), buf
, 1);
2080 /* Scan the chars for C-g and store them in kbd_buffer. */
2081 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2082 e
.frame_or_window
= selected_frame
;
2084 for (i
= 0; i
< nread
; i
++)
2086 /* Convert chars > 0177 to meta events if desired.
2087 We do this under the same conditions that read_avail_input does. */
2088 if (read_socket_hook
== 0)
2090 /* If the user says she has a meta key, then believe her. */
2091 if (meta_key
== 1 && (buf
[i
] & 0x80))
2092 e
.modifiers
= meta_modifier
;
2097 XSETINT (e
.code
, buf
[i
]);
2098 kbd_buffer_store_event (&e
);
2099 /* Don't look at input that follows a C-g too closely.
2100 This reduces lossage due to autorepeat on C-g. */
2101 if (buf
[i
] == quit_char
)
2107 #if !defined (HAVE_SELECT)
2108 #define select sys_select
2111 #endif /* not HAVE_SELECT */
2112 #endif /* not MSDOS */
2114 /* POSIX signals support - DJB */
2115 /* Anyone with POSIX signals should have ANSI C declarations */
2117 #ifdef POSIX_SIGNALS
2119 sigset_t empty_mask
, full_mask
;
2122 sys_signal (int signal_number
, signal_handler_t action
)
2124 struct sigaction new_action
, old_action
;
2125 sigemptyset (&new_action
.sa_mask
);
2126 new_action
.sa_handler
= action
;
2127 new_action
.sa_flags
= 0;
2128 #if defined (SA_RESTART)
2129 /* Emacs mostly works better with restartable system services. If this
2130 flag exists, we probably want to turn it on here.
2131 However, on some systems this resets the timeout of `select'
2132 which means that `select' never finishes if it keeps getting signals.
2133 BROKEN_SA_RESTART is defined on those systems. */
2134 /* It's not clear why the comment above says "mostly works better". --Stef
2135 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
2136 for pending input so we need long-running syscalls to be interrupted
2137 after a signal that sets the interrupt_input_pending flag. */
2138 /* Non-interactive keyboard input goes through stdio, where we always
2139 want restartable system calls. */
2140 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
2143 new_action
.sa_flags
= SA_RESTART
;
2145 sigaction (signal_number
, &new_action
, &old_action
);
2146 return (old_action
.sa_handler
);
2150 /* If we're compiling with GCC, we don't need this function, since it
2151 can be written as a macro. */
2153 sys_sigmask (int sig
)
2156 sigemptyset (&mask
);
2157 sigaddset (&mask
, sig
);
2162 /* I'd like to have these guys return pointers to the mask storage in here,
2163 but there'd be trouble if the code was saving multiple masks. I'll be
2164 safe and pass the structure. It normally won't be more than 2 bytes
2168 sys_sigblock (sigset_t new_mask
)
2171 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2176 sys_sigunblock (sigset_t new_mask
)
2179 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2184 sys_sigsetmask (sigset_t new_mask
)
2187 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2191 #endif /* POSIX_SIGNALS */
2193 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2194 static char *my_sys_siglist
[NSIG
];
2198 # define sys_siglist my_sys_siglist
2204 #ifdef POSIX_SIGNALS
2205 sigemptyset (&empty_mask
);
2206 sigfillset (&full_mask
);
2209 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2213 sys_siglist
[SIGABRT
] = "Aborted";
2216 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2219 sys_siglist
[SIGALRM
] = "Alarm clock";
2222 sys_siglist
[SIGBUS
] = "Bus error";
2225 sys_siglist
[SIGCLD
] = "Child status changed";
2228 sys_siglist
[SIGCHLD
] = "Child status changed";
2231 sys_siglist
[SIGCONT
] = "Continued";
2234 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2237 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2240 sys_siglist
[SIGEMT
] = "Emulation trap";
2243 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2246 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2249 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2252 sys_siglist
[SIGHUP
] = "Hangup";
2255 sys_siglist
[SIGILL
] = "Illegal instruction";
2258 sys_siglist
[SIGINT
] = "Interrupt";
2261 sys_siglist
[SIGIO
] = "I/O possible";
2264 sys_siglist
[SIGIOINT
] = "I/O intervention required";
2267 sys_siglist
[SIGIOT
] = "IOT trap";
2270 sys_siglist
[SIGKILL
] = "Killed";
2273 sys_siglist
[SIGLOST
] = "Resource lost";
2276 sys_siglist
[SIGLWP
] = "SIGLWP";
2279 sys_siglist
[SIGMSG
] = "Monitor mode data available";
2282 sys_siglist
[SIGWIND
] = "SIGPHONE";
2285 sys_siglist
[SIGPIPE
] = "Broken pipe";
2288 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
2291 sys_siglist
[SIGPROF
] = "Profiling timer expired";
2294 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
2297 sys_siglist
[SIGPWR
] = "Power-fail restart";
2300 sys_siglist
[SIGQUIT
] = "Quit";
2303 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
2306 sys_siglist
[SIGSAK
] = "Secure attention";
2309 sys_siglist
[SIGSEGV
] = "Segmentation violation";
2312 sys_siglist
[SIGSOUND
] = "Sound completed";
2315 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
2318 sys_siglist
[SIGSTP
] = "Stopped (user)";
2321 sys_siglist
[SIGSYS
] = "Bad argument to system call";
2324 sys_siglist
[SIGTERM
] = "Terminated";
2327 sys_siglist
[SIGTHAW
] = "SIGTHAW";
2330 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
2333 sys_siglist
[SIGTSTP
] = "Stopped (user)";
2336 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
2339 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
2342 sys_siglist
[SIGURG
] = "Urgent I/O condition";
2345 sys_siglist
[SIGUSR1
] = "User defined signal 1";
2348 sys_siglist
[SIGUSR2
] = "User defined signal 2";
2351 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
2354 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
2357 sys_siglist
[SIGWINCH
] = "Window size changed";
2360 sys_siglist
[SIGWIND
] = "SIGWIND";
2363 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
2366 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
2369 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
2378 /* Figure out how many bits the system's random number generator uses.
2379 `random' and `lrand48' are assumed to return 31 usable bits.
2380 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2381 so we'll shift it and treat it like the 15-bit USG `rand'. */
2385 # define RAND_BITS 31
2386 # else /* !HAVE_RANDOM */
2387 # ifdef HAVE_LRAND48
2388 # define RAND_BITS 31
2389 # define random lrand48
2390 # else /* !HAVE_LRAND48 */
2391 # define RAND_BITS 15
2392 # if RAND_MAX == 32767
2393 # define random rand
2394 # else /* RAND_MAX != 32767 */
2395 # if RAND_MAX == 2147483647
2396 # define random() (rand () >> 16)
2397 # else /* RAND_MAX != 2147483647 */
2399 # define random rand
2401 # define random() (rand () >> 16)
2403 # endif /* RAND_MAX != 2147483647 */
2404 # endif /* RAND_MAX != 32767 */
2405 # endif /* !HAVE_LRAND48 */
2406 # endif /* !HAVE_RANDOM */
2407 #endif /* !RAND_BITS */
2414 srandom ((unsigned int)arg
);
2416 # ifdef HAVE_LRAND48
2419 srand ((unsigned int)arg
);
2425 * Build a full Emacs-sized word out of whatever we've got.
2426 * This suffices even for a 64-bit architecture with a 15-bit rand.
2431 long val
= random ();
2432 #if VALBITS > RAND_BITS
2433 val
= (val
<< RAND_BITS
) ^ random ();
2434 #if VALBITS > 2*RAND_BITS
2435 val
= (val
<< RAND_BITS
) ^ random ();
2436 #if VALBITS > 3*RAND_BITS
2437 val
= (val
<< RAND_BITS
) ^ random ();
2438 #if VALBITS > 4*RAND_BITS
2439 val
= (val
<< RAND_BITS
) ^ random ();
2440 #endif /* need at least 5 */
2441 #endif /* need at least 4 */
2442 #endif /* need at least 3 */
2443 #endif /* need at least 2 */
2444 return val
& ((1L << VALBITS
) - 1);
2447 #ifndef HAVE_STRERROR
2453 extern char *sys_errlist
[];
2454 extern int sys_nerr
;
2456 if (errnum
>= 0 && errnum
< sys_nerr
)
2457 return sys_errlist
[errnum
];
2458 return (char *) "Unknown error";
2460 #endif /* not WINDOWSNT */
2461 #endif /* ! HAVE_STRERROR */
2464 emacs_open (path
, oflag
, mode
)
2468 register int rtnval
;
2470 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2471 && (errno
== EINTR
))
2481 register int rtnval
;
2483 while ((rtnval
= close (fd
)) == -1
2484 && (errno
== EINTR
))
2487 /* If close is interrupted SunOS 4.1 may or may not have closed the
2488 file descriptor. If it did the second close will fail with
2489 errno = EBADF. That means we have succeeded. */
2490 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2497 emacs_read (fildes
, buf
, nbyte
)
2502 register int rtnval
;
2504 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2505 && (errno
== EINTR
))
2511 emacs_write (fildes
, buf
, nbyte
)
2516 register int rtnval
, bytes_written
;
2522 rtnval
= write (fildes
, buf
, nbyte
);
2529 /* I originally used `QUIT' but that might causes files to
2530 be truncated if you hit C-g in the middle of it. --Stef */
2531 if (interrupt_input_pending
)
2532 handle_async_input ();
2533 if (pending_atimers
)
2534 do_pending_atimers ();
2539 return (bytes_written
? bytes_written
: -1);
2544 bytes_written
+= rtnval
;
2546 return (bytes_written
);
2551 * All of the following are for USG.
2553 * On USG systems the system calls are INTERRUPTIBLE by signals
2554 * that the user program has elected to catch. Thus the system call
2555 * must be retried in these cases. To handle this without massive
2556 * changes in the source code, we remap the standard system call names
2557 * to names for our own functions in sysdep.c that do the system call
2558 * with retries. Actually, for portability reasons, it is good
2559 * programming practice, as this example shows, to limit all actual
2560 * system calls to a single occurrence in the source. Sure, this
2561 * adds an extra level of function call overhead but it is almost
2562 * always negligible. Fred Fish, Unisoft Systems Inc.
2566 * Warning, this function may not duplicate 4.2 action properly
2567 * under error conditions.
2571 /* In 4.1, param.h fails to define this. */
2572 #define MAXPATHLEN 1024
2581 char *npath
, *spath
;
2582 extern char *getcwd ();
2584 BLOCK_INPUT
; /* getcwd uses malloc */
2585 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2591 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2592 up to first slash. Should be harmless on other systems. */
2593 while (*npath
&& *npath
!= '/')
2595 strcpy (pathname
, npath
);
2596 free (spath
); /* getcwd uses malloc */
2601 #endif /* HAVE_GETWD */
2604 * Emulate rename using unlink/link. Note that this is
2605 * only partially correct. Also, doesn't enforce restriction
2606 * that files be of same type (regular->regular, dir->dir, etc).
2615 if (access (from
, 0) == 0)
2618 if (link (from
, to
) == 0)
2619 if (unlink (from
) == 0)
2628 #if defined(HPUX) && !defined(HAVE_PERROR)
2630 /* HPUX curses library references perror, but as far as we know
2631 it won't be called. Anyway this definition will do for now. */
2636 #endif /* HPUX and not HAVE_PERROR */
2641 * Emulate BSD dup2. First close newd if it already exists.
2642 * Then, attempt to dup oldd. If not successful, call dup2 recursively
2643 * until we are, then close the unsuccessful ones.
2650 register int fd
, ret
;
2655 return fcntl (oldd
, F_DUPFD
, newd
);
2662 ret
= dup2 (old
,new);
2668 #endif /* not HAVE_DUP2 */
2671 * Gettimeofday. Simulate as much as possible. Only accurate
2672 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2673 * Only needed when subprocesses are defined.
2677 #ifndef HAVE_GETTIMEOFDAY
2682 gettimeofday (tp
, tzp
)
2684 struct timezone
*tzp
;
2686 extern long time ();
2688 tp
->tv_sec
= time ((long *)0);
2691 tzp
->tz_minuteswest
= -1;
2697 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2700 * This function will go away as soon as all the stubs fixed. (fnf)
2707 printf ("%s not yet implemented\r\n", badfunc
);
2708 reset_all_sys_modes ();
2714 /* Directory routines for systems that don't have them. */
2716 #ifdef SYSV_SYSTEM_DIR
2720 #if !defined (HAVE_CLOSEDIR)
2723 closedir (DIR *dirp
/* stream from opendir */)
2727 rtnval
= emacs_close (dirp
->dd_fd
);
2729 /* Some systems (like Solaris) allocate the buffer and the DIR all
2730 in one block. Why in the world are we freeing this ourselves
2732 #if ! defined (SOLARIS2)
2733 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
2735 xfree ((char *) dirp
);
2739 #endif /* not HAVE_CLOSEDIR */
2740 #endif /* SYSV_SYSTEM_DIR */
2744 set_file_times (filename
, atime
, mtime
)
2745 const char *filename
;
2746 EMACS_TIME atime
, mtime
;
2749 struct timeval tv
[2];
2752 return utimes (filename
, tv
);
2753 #else /* not HAVE_UTIMES */
2755 utb
.actime
= EMACS_SECS (atime
);
2756 utb
.modtime
= EMACS_SECS (mtime
);
2757 return utime (filename
, &utb
);
2758 #endif /* not HAVE_UTIMES */
2761 /* mkdir and rmdir functions, for systems which don't have them. */
2765 * Written by Robert Rother, Mariah Corporation, August 1985.
2767 * If you want it, it's yours. All I ask in return is that if you
2768 * figure out how to do this in a Bourne Shell script you send me
2770 * sdcsvax!rmr or rmr@uscd
2772 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2773 * subroutine. 11Mar86; hoptoad!gnu
2775 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2776 * subroutine didn't return EEXIST. It does now.
2782 #ifdef MKDIR_PROTOTYPE
2786 mkdir (dpath
, dmode
)
2791 int cpid
, status
, fd
;
2792 struct stat statbuf
;
2794 if (stat (dpath
, &statbuf
) == 0)
2796 errno
= EEXIST
; /* Stat worked, so it already exists */
2800 /* If stat fails for a reason other than non-existence, return error */
2801 if (errno
!= ENOENT
)
2804 synch_process_alive
= 1;
2805 switch (cpid
= fork ())
2808 case -1: /* Error in fork */
2809 return (-1); /* Errno is set already */
2811 case 0: /* Child process */
2813 * Cheap hack to set mode of new directory. Since this
2814 * child process is going away anyway, we zap its umask.
2815 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2816 * directory. Does anybody care?
2818 status
= umask (0); /* Get current umask */
2819 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2820 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2827 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2828 _exit (-1); /* Can't exec /bin/mkdir */
2830 default: /* Parent process */
2831 wait_for_termination (cpid
);
2834 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2835 || synch_process_termsig
!= 0)
2837 errno
= EIO
; /* We don't know why, but */
2838 return -1; /* /bin/mkdir failed */
2843 #endif /* not HAVE_MKDIR */
2850 int cpid
, status
, fd
;
2851 struct stat statbuf
;
2853 if (stat (dpath
, &statbuf
) != 0)
2855 /* Stat just set errno. We don't have to */
2859 synch_process_alive
= 1;
2860 switch (cpid
= fork ())
2863 case -1: /* Error in fork */
2864 return (-1); /* Errno is set already */
2866 case 0: /* Child process */
2867 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2874 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2875 _exit (-1); /* Can't exec /bin/rmdir */
2877 default: /* Parent process */
2878 wait_for_termination (cpid
);
2881 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2882 || synch_process_termsig
!= 0)
2884 errno
= EIO
; /* We don't know why, but */
2885 return -1; /* /bin/rmdir failed */
2890 #endif /* !HAVE_RMDIR */
2900 register int length
;
2902 while (length
-- > 0)
2906 #endif /* no bzero */
2907 #endif /* BSTRING */
2909 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
2912 /* Saying `void' requires a declaration, above, where bcopy is used
2913 and that declaration causes pain for systems where bcopy is a macro. */
2914 bcopy (b1
, b2
, length
)
2917 register int length
;
2919 while (length
-- > 0)
2922 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
2927 bcmp (b1
, b2
, length
) /* This could be a macro! */
2930 register int length
;
2932 while (length
-- > 0)
2938 #endif /* no bcmp */
2939 #endif /* not BSTRING */
2941 #ifndef HAVE_STRSIGNAL
2948 if (0 <= code
&& code
< NSIG
)
2950 /* Cast to suppress warning if the table has const char *. */
2951 signame
= (char *) sys_siglist
[code
];
2956 #endif /* HAVE_STRSIGNAL */
2959 /* For make-serial-process */
2960 int serial_open (char *port
)
2964 fd
= emacs_open ((char*) port
,
2977 error ("Could not open %s: %s",
2978 port
, emacs_strerror (errno
));
2981 ioctl (fd
, TIOCEXCL
, (char *) 0);
2986 #endif /* TERMIOS */
2990 #if !defined (HAVE_CFMAKERAW)
2991 /* Workaround for targets which are missing cfmakeraw. */
2992 /* Pasted from man page. */
2993 static void cfmakeraw (struct termios
*termios_p
)
2995 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2996 termios_p
->c_oflag
&= ~OPOST
;
2997 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2998 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2999 termios_p
->c_cflag
|= CS8
;
3001 #endif /* !defined (HAVE_CFMAKERAW */
3003 #if !defined (HAVE_CFSETSPEED)
3004 /* Workaround for targets which are missing cfsetspeed. */
3005 static int cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
3007 return (cfsetispeed (termios_p
, vitesse
)
3008 + cfsetospeed (termios_p
, vitesse
));
3012 /* For serial-process-configure */
3014 serial_configure (struct Lisp_Process
*p
,
3015 Lisp_Object contact
)
3017 Lisp_Object childp2
= Qnil
;
3018 Lisp_Object tem
= Qnil
;
3019 struct termios attr
;
3021 char summary
[4] = "???"; /* This usually becomes "8N1". */
3023 childp2
= Fcopy_sequence (p
->childp
);
3025 /* Read port attributes and prepare default configuration. */
3026 err
= tcgetattr (p
->outfd
, &attr
);
3028 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
3030 #if defined (CLOCAL)
3031 attr
.c_cflag
|= CLOCAL
;
3034 attr
.c_cflag
| CREAD
;
3037 /* Configure speed. */
3038 if (!NILP (Fplist_member (contact
, QCspeed
)))
3039 tem
= Fplist_get (contact
, QCspeed
);
3041 tem
= Fplist_get (p
->childp
, QCspeed
);
3043 err
= cfsetspeed (&attr
, XINT (tem
));
3045 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
3046 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
3048 /* Configure bytesize. */
3049 if (!NILP (Fplist_member (contact
, QCbytesize
)))
3050 tem
= Fplist_get (contact
, QCbytesize
);
3052 tem
= Fplist_get (p
->childp
, QCbytesize
);
3054 tem
= make_number (8);
3056 if (XINT (tem
) != 7 && XINT (tem
) != 8)
3057 error (":bytesize must be nil (8), 7, or 8");
3058 summary
[0] = XINT(tem
) + '0';
3059 #if defined (CSIZE) && defined (CS7) && defined (CS8)
3060 attr
.c_cflag
&= ~CSIZE
;
3061 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
3063 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
3064 if (XINT (tem
) != 8)
3065 error ("Bytesize cannot be changed");
3067 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
3069 /* Configure parity. */
3070 if (!NILP (Fplist_member (contact
, QCparity
)))
3071 tem
= Fplist_get (contact
, QCparity
);
3073 tem
= Fplist_get (p
->childp
, QCparity
);
3074 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
3075 error (":parity must be nil (no parity), `even', or `odd'");
3076 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
3077 attr
.c_cflag
&= ~(PARENB
| PARODD
);
3078 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
3083 else if (EQ (tem
, Qeven
))
3086 attr
.c_cflag
|= PARENB
;
3087 attr
.c_iflag
|= (IGNPAR
| INPCK
);
3089 else if (EQ (tem
, Qodd
))
3092 attr
.c_cflag
|= (PARENB
| PARODD
);
3093 attr
.c_iflag
|= (IGNPAR
| INPCK
);
3096 /* Don't error on no parity, which should be set by cfmakeraw. */
3098 error ("Parity cannot be configured");
3100 childp2
= Fplist_put (childp2
, QCparity
, tem
);
3102 /* Configure stopbits. */
3103 if (!NILP (Fplist_member (contact
, QCstopbits
)))
3104 tem
= Fplist_get (contact
, QCstopbits
);
3106 tem
= Fplist_get (p
->childp
, QCstopbits
);
3108 tem
= make_number (1);
3110 if (XINT (tem
) != 1 && XINT (tem
) != 2)
3111 error (":stopbits must be nil (1 stopbit), 1, or 2");
3112 summary
[2] = XINT (tem
) + '0';
3113 #if defined (CSTOPB)
3114 attr
.c_cflag
&= ~CSTOPB
;
3115 if (XINT (tem
) == 2)
3116 attr
.c_cflag
|= CSTOPB
;
3118 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
3119 if (XINT (tem
) != 1)
3120 error ("Stopbits cannot be configured");
3122 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
3124 /* Configure flowcontrol. */
3125 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
3126 tem
= Fplist_get (contact
, QCflowcontrol
);
3128 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
3129 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
3130 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
3131 #if defined (CRTSCTS)
3132 attr
.c_cflag
&= ~CRTSCTS
;
3134 #if defined (CNEW_RTSCTS)
3135 attr
.c_cflag
&= ~CNEW_RTSCTS
;
3137 #if defined (IXON) && defined (IXOFF)
3138 attr
.c_iflag
&= ~(IXON
| IXOFF
);
3142 /* Already configured. */
3144 else if (EQ (tem
, Qhw
))
3146 #if defined (CRTSCTS)
3147 attr
.c_cflag
|= CRTSCTS
;
3148 #elif defined (CNEW_RTSCTS)
3149 attr
.c_cflag
|= CNEW_RTSCTS
;
3151 error ("Hardware flowcontrol (RTS/CTS) not supported");
3154 else if (EQ (tem
, Qsw
))
3156 #if defined (IXON) && defined (IXOFF)
3157 attr
.c_iflag
|= (IXON
| IXOFF
);
3159 error ("Software flowcontrol (XON/XOFF) not supported");
3162 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
3164 /* Activate configuration. */
3165 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
3167 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
3169 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
3170 p
->childp
= childp2
;
3173 #endif /* TERMIOS */
3175 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
3176 (do not change this comment) */