1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86, 87, 88, 93, 94 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include "blockinput.h"
29 #define min(x,y) ((x) > (y) ? (y) : (x))
31 /* In this file, open, read and write refer to the system calls,
32 not our sugared interfaces sys_open, sys_read and sys_write.
33 Contrariwise, for systems where we use the system calls directly,
34 define sys_read, etc. here as aliases for them. */
37 #define sys_write write
38 #endif /* `read' is not a macro */
44 #define sys_close close
51 #else /* `open' is a macro */
53 #endif /* `open' is a macro */
55 /* Does anyone other than VMS need this? */
57 #define sys_fwrite fwrite
63 #include <sys/types.h>
67 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
71 #include <sys/param.h>
96 #define MAXIOSIZE ( 32 * PAGESIZE ) /* Don't I/O more than 32 blocks at a time */
100 #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG)
101 because the vms compiler doesn't grok `defined' */
109 #endif /* not 4.1 bsd */
112 /* On some systems (DGUX comes to mind real fast) FASYNC causes
113 background writes to the terminal to stop all processes in the
114 process group when invoked under the csh (and probably any shell
115 with job control). This stops Emacs dead in its tracks when coming
121 #include <sys/ioctl.h>
126 #ifdef BROKEN_TIOCGWINSZ
131 #include <sys/utsname.h>
133 #ifndef MEMORY_IN_STRING_H
138 #include <sys/sioctl.h>
141 #include <sys/stream.h>
142 #include <sys/ptem.h>
144 #endif /* TIOCGWINSZ */
147 extern int quit_char
;
151 #include "termhooks.h"
152 #include "termchar.h"
153 #include "termopts.h"
154 #include "dispextern.h"
157 #ifdef NONSYSTEM_DIR_LIBRARY
159 #endif /* NONSYSTEM_DIR_LIBRARY */
161 #include "syssignal.h"
164 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
170 #define LNOFLSH 0100000
173 static int baud_convert
[] =
178 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
179 1800, 2400, 4800, 9600, 19200, 38400
185 /* The file descriptor for Emacs's input terminal.
186 Under Unix, this is normaly zero except when using X;
187 under VMS, we place the input channel number here.
188 This allows us to write more code that works for both VMS and Unix. */
191 /* Specify a different file descriptor for further input operations. */
200 /* Discard pending input on descriptor input_fd. */
204 struct emacs_tty buf
;
209 /* Discarding input is not safe when the input could contain
210 replies from the X server. So don't do it. */
211 if (read_socket_hook
)
216 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
217 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
223 ioctl (input_fd
, TIOCFLUSH
, &zero
);
225 #else /* not Apollo */
226 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
227 while (dos_keyread () != -1)
229 #else /* not MSDOS */
230 EMACS_GET_TTY (input_fd
, &buf
);
231 EMACS_SET_TTY (input_fd
, &buf
, 0);
232 #endif /* not MSDOS */
233 #endif /* not Apollo */
239 /* Arrange for character C to be read as the next input from
245 /* Should perhaps error if in batch mode */
247 ioctl (input_fd
, TIOCSTI
, &c
);
248 #else /* no TIOCSTI */
249 error ("Cannot stuff terminal input characters in this version of Unix");
250 #endif /* no TIOCSTI */
267 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
268 &sg
.class, 12, 0, 0, 0, 0 );
269 ospeed
= sg
.xmit_baud
;
275 tcgetattr (input_fd
, &sg
);
276 ospeed
= cfgetospeed (&sg
);
277 #else /* neither VMS nor TERMIOS */
283 tcgetattr (input_fd
, &sg
);
285 ioctl (input_fd
, TCGETA
, &sg
);
287 ospeed
= sg
.c_cflag
& CBAUD
;
288 #else /* neither VMS nor TERMIOS nor TERMIO */
291 sg
.sg_ospeed
= B9600
;
292 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
294 ospeed
= sg
.sg_ospeed
;
295 #endif /* not HAVE_TERMIO */
296 #endif /* not HAVE_TERMIOS */
298 #endif /* not MSDOS */
301 baud_rate
= (ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
302 ? baud_convert
[ospeed
] : 9600);
308 set_exclusive_use (fd
)
312 ioctl (fd
, FIOCLEX
, 0);
314 /* Ok to do nothing if this feature does not exist */
319 wait_without_blocking ()
322 wait3 (0, WNOHANG
| WUNTRACED
, 0);
324 croak ("wait_without_blocking");
326 synch_process_alive
= 0;
329 #endif /* not subprocesses */
331 int wait_debugging
; /* Set nonzero to make following function work under dbx
332 (at least for bsd). */
335 wait_for_termination_signal ()
338 /* Wait for subprocess with process id `pid' to terminate and
339 make sure it will get eliminated (not remain forever as a zombie) */
341 wait_for_termination (pid
)
350 status
= SYS$
FORCEX (&pid
, 0, 0);
353 #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5))
354 /* Note that kill returns -1 even if the process is just a zombie now.
355 But inevitably a SIGCHLD interrupt should be generated
356 and child_sig will do wait3 and make the process go away. */
357 /* There is some indication that there is a bug involved with
358 termination of subprocesses, perhaps involving a kernel bug too,
359 but no idea what it is. Just as a hunch we signal SIGCHLD to see
360 if that causes the problem to go away or get worse. */
361 sigsetmask (sigmask (SIGCHLD
));
362 if (0 > kill (pid
, 0))
364 sigsetmask (SIGEMPTYMASK
);
365 kill (getpid (), SIGCHLD
);
371 sigpause (SIGEMPTYMASK
);
372 #else /* not BSD, and not HPUX version >= 6 */
373 #if defined (UNIPLUS)
374 if (0 > kill (pid
, 0))
377 #else /* neither BSD nor UNIPLUS: random sysV */
378 #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */
379 sigblock (sigmask (SIGCHLD
));
380 if (0 > kill (pid
, 0))
382 sigunblock (sigmask (SIGCHLD
));
385 sigpause (SIGEMPTYMASK
);
386 #else /* not POSIX_SIGNALS */
387 #ifdef HAVE_SYSV_SIGPAUSE
389 if (0 > kill (pid
, 0))
395 #else /* not HAVE_SYSV_SIGPAUSE */
396 if (0 > kill (pid
, 0))
398 /* Using sleep instead of pause avoids timing error.
399 If the inferior dies just before the sleep,
400 we lose just one second. */
402 #endif /* not HAVE_SYSV_SIGPAUSE */
403 #endif /* not POSIX_SIGNALS */
404 #endif /* not UNIPLUS */
405 #endif /* not BSD, and not HPUX version >= 6 */
407 #else /* not subprocesses */
409 if (kill (pid
, 0) < 0)
415 if (status
== pid
|| status
== -1)
418 #endif /* not subprocesses */
425 * flush any pending output
426 * (may flush input as well; it does not matter the way we use it)
429 flush_pending_output (channel
)
433 /* If we try this, we get hit with SIGTTIN, because
434 the child's tty belongs to the child's pgrp. */
437 ioctl (channel
, TCFLSH
, 1);
441 /* 3rd arg should be ignored
442 but some 4.2 kernels actually want the address of an int
443 and nonzero means something different. */
444 ioctl (channel
, TIOCFLUSH
, &zero
);
451 /* Set up the terminal at the other end of a pseudo-terminal that
452 we will be controlling an inferior through.
453 It should not echo or do line-editing, since that is done
454 in Emacs. No padding needed for insertion into an Emacs buffer. */
456 child_setup_tty (out
)
462 EMACS_GET_TTY (out
, &s
);
464 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
465 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
466 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
468 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
469 /* No output delays */
471 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
472 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
474 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
477 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
479 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
481 /* Said to be unnecessary: */
482 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
483 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
486 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
487 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
488 s
.main
.c_cc
[VERASE
] = 0377; /* disable erase processing */
489 s
.main
.c_cc
[VKILL
] = 0377; /* disable kill processing */
492 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
496 /* AIX enhanced edit loses NULs, so disable it */
499 s
.main
.c_iflag
&= ~ASCEDIT
;
501 /* Also, PTY overloads NUL and BREAK.
502 don't ignore break, but don't signal either, so it looks like NUL. */
503 s
.main
.c_iflag
&= ~IGNBRK
;
504 s
.main
.c_iflag
&= ~BRKINT
;
505 /* QUIT and INTR work better as signals, so disable character forms */
506 s
.main
.c_cc
[VINTR
] = 0377;
507 #ifdef SIGNALS_VIA_CHARACTERS
508 /* the QUIT and INTR character are used in process_send_signal
509 so set them here to something useful. */
510 if (s
.main
.c_cc
[VQUIT
] == 0377)
511 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
512 if (s
.main
.c_cc
[VINTR
] == 0377)
513 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
514 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
515 /* QUIT and INTR work better as signals, so disable character forms */
516 s
.main
.c_cc
[VQUIT
] = 0377;
517 s
.main
.c_cc
[VINTR
] = 0377;
518 s
.main
.c_lflag
&= ~ISIG
;
519 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
520 s
.main
.c_cc
[VEOL
] = 0377;
521 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
524 #else /* not HAVE_TERMIO */
526 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
528 s
.main
.sg_flags
|= LPASS8
;
529 s
.main
.sg_erase
= 0377;
530 s
.main
.sg_kill
= 0377;
531 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
533 #endif /* not HAVE_TERMIO */
535 EMACS_SET_TTY (out
, &s
, 0);
544 ioctl (out
, FIOASYNC
, &zero
);
547 #endif /* not MSDOS */
551 #endif /* subprocesses */
557 EMACS_SET_TTY_PGRP (input_fd
, &pid
);
560 /* Record a signal code and the handler for it. */
564 SIGTYPE (*handler
) ();
567 /* Suspend the Emacs process; give terminal to its superior. */
572 /* "Foster" parentage allows emacs to return to a subprocess that attached
573 to the current emacs as a cheaper than starting a whole new process. This
574 is set up by KEPTEDITOR.COM. */
575 unsigned long parent_id
, foster_parent_id
;
578 fpid_string
= getenv ("EMACS_PARENT_PID");
579 if (fpid_string
!= NULL
)
581 sscanf (fpid_string
, "%x", &foster_parent_id
);
582 if (foster_parent_id
!= 0)
583 parent_id
= foster_parent_id
;
585 parent_id
= getppid ();
588 parent_id
= getppid ();
590 xfree (fpid_string
); /* On VMS, this was malloc'd */
592 if (parent_id
&& parent_id
!= 0xffffffff)
594 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
595 int status
= LIB$
ATTACH (&parent_id
) & 1;
596 signal (SIGINT
, oldsig
);
605 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
606 d_prompt
.a
= "Emacs: "; /* Just a reminder */
607 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
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 */
636 /* Fork a subshell. */
641 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
643 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
646 struct save_signal saved_handlers
[5];
648 saved_handlers
[0].code
= SIGINT
;
649 saved_handlers
[1].code
= SIGQUIT
;
650 saved_handlers
[2].code
= SIGTERM
;
652 saved_handlers
[3].code
= SIGIO
;
653 saved_handlers
[4].code
= 0;
655 saved_handlers
[3].code
= 0;
659 error ("Can't spawn subshell");
664 #ifdef MSDOS /* MW, Aug 1993 */
667 sh
= (char *) egetenv ("SHELL");
671 /* Use our buffer's default directory for the subshell. */
677 /* mentioning current_buffer->buffer would mean including buffer.h,
678 which somehow wedges the hp compiler. So instead... */
680 dir
= intern ("default-directory");
682 if (XFASTINT (Fboundp (dir
)) == XFASTINT (Qnil
))
684 dir
= Fsymbol_value (dir
);
685 if (XTYPE (dir
) != Lisp_String
)
688 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
689 len
= XSTRING (dir
)->size
;
690 bcopy (XSTRING (dir
)->data
, str
, len
);
691 if (str
[len
- 1] != '/') str
[len
++] = '/';
697 close_process_descs (); /* Close Emacs's pipes/ptys */
702 extern int emacs_priority
;
705 nice (-emacs_priority
);
709 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
713 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
714 #else /* not MSDOS */
716 write (1, "Can't execute subshell", 22);
718 #endif /* not MSDOS */
721 save_signal_handlers (saved_handlers
);
722 synch_process_alive
= 1;
723 wait_for_termination (pid
);
724 restore_signal_handlers (saved_handlers
);
728 save_signal_handlers (saved_handlers
)
729 struct save_signal
*saved_handlers
;
731 while (saved_handlers
->code
)
733 saved_handlers
->handler
734 = (SIGTYPE (*) ()) signal (saved_handlers
->code
, SIG_IGN
);
739 restore_signal_handlers (saved_handlers
)
740 struct save_signal
*saved_handlers
;
742 while (saved_handlers
->code
)
744 signal (saved_handlers
->code
, saved_handlers
->handler
);
756 old_fcntl_flags
= fcntl (input_fd
, F_GETFL
, 0) & ~FASYNC
;
766 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
771 sigunblock (sigmask (SIGWINCH
));
773 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
775 interrupts_deferred
= 0;
781 sigblock (sigmask (SIGWINCH
));
783 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
784 interrupts_deferred
= 1;
787 #else /* no FASYNC */
788 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
793 ioctl (input_fd
, FIOASYNC
, &on
);
794 interrupts_deferred
= 0;
801 ioctl (input_fd
, FIOASYNC
, &off
);
802 interrupts_deferred
= 1;
805 #else /* not FASYNC, not STRIDE */
817 sigaddset(&st
, SIGIO
);
818 ioctl (input_fd
, FIOASYNC
, &on
);
819 interrupts_deferred
= 0;
820 sigprocmask(SIG_UNBLOCK
, &st
, (sigset_t
*)0);
827 ioctl (input_fd
, FIOASYNC
, &off
);
828 interrupts_deferred
= 1;
835 croak ("request_sigio");
840 croak ("unrequest_sigio");
848 /* Saving and restoring the process group of Emacs's terminal. */
852 /* The process group of which Emacs was a member when it initially
855 If Emacs was in its own process group (i.e. inherited_pgroup ==
856 getpid ()), then we know we're running under a shell with job
857 control (Emacs would never be run as part of a pipeline).
860 If Emacs was not in its own process group, then we know we're
861 running under a shell (or a caller) that doesn't know how to
862 separate itself from Emacs (like sh). Emacs must be in its own
863 process group in order to receive SIGIO correctly. In this
864 situation, we put ourselves in our own pgroup, forcibly set the
865 tty's pgroup to our pgroup, and make sure to restore and reinstate
866 the tty's pgroup just like any other terminal setting. If
867 inherited_group was not the tty's pgroup, then we'll get a
868 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
869 it goes foreground in the future, which is what should happen. */
870 int inherited_pgroup
;
872 /* Split off the foreground process group to Emacs alone.
873 When we are in the foreground, but not started in our own process
874 group, redirect the TTY to point to our own process group. We need
875 to be in our own process group to receive SIGIO properly. */
876 narrow_foreground_group ()
880 setpgrp (0, inherited_pgroup
);
881 if (inherited_pgroup
!= me
)
882 EMACS_SET_TTY_PGRP (input_fd
, &me
);
886 /* Set the tty to our original foreground group. */
887 widen_foreground_group ()
889 if (inherited_pgroup
!= getpid ())
890 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
891 setpgrp (0, inherited_pgroup
);
894 #endif /* BSD_PGRPS */
896 /* Getting and setting emacs_tty structures. */
898 /* Set *TC to the parameters associated with the terminal FD.
899 Return zero if all's well, or -1 if we ran into an error we
900 couldn't deal with. */
902 emacs_get_tty (fd
, settings
)
904 struct emacs_tty
*settings
;
906 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
908 /* We have those nifty POSIX tcmumbleattr functions. */
909 if (tcgetattr (fd
, &settings
->main
) < 0)
914 /* The SYSV-style interface? */
915 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
920 /* Vehemently Monstrous System? :-) */
921 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
922 &settings
->main
.class, 12, 0, 0, 0, 0)
928 /* I give up - I hope you have the BSD ioctls. */
929 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
931 #endif /* not MSDOS */
936 /* Suivant - Do we have to get struct ltchars data? */
938 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
942 /* How about a struct tchars and a wordful of lmode bits? */
944 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
945 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
949 /* We have survived the tempest. */
954 /* Set the parameters of the tty on FD according to the contents of
955 *SETTINGS. If WAITP is non-zero, we wait for all queued output to
956 be written before making the change; otherwise, we forget any
957 queued input and make the change immediately.
958 Return 0 if all went well, and -1 if anything failed. */
960 emacs_set_tty (fd
, settings
, waitp
)
962 struct emacs_tty
*settings
;
965 /* Set the primary parameters - baud rate, character size, etcetera. */
968 /* We have those nifty POSIX tcmumbleattr functions.
969 William J. Smith <wjs@wiis.wang.com> writes:
970 "POSIX 1003.1 defines tcsetattr() to return success if it was
971 able to perform any of the requested actions, even if some
972 of the requested actions could not be performed.
973 We must read settings back to ensure tty setup properly.
974 AIX requires this to keep tty from hanging occasionally." */
975 /* This make sure that we don't loop indefinitely in here. */
976 for (i
= 0 ; i
< 10 ; i
++)
977 if (tcsetattr (fd
, waitp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
988 /* Get the current settings, and see if they're what we asked for. */
989 tcgetattr (fd
, &new);
990 /* We cannot use memcmp on the whole structure here because under
991 * aix386 the termios structure has some reserved field that may
994 if ( new.c_iflag
== settings
->main
.c_iflag
995 && new.c_oflag
== settings
->main
.c_oflag
996 && new.c_cflag
== settings
->main
.c_cflag
997 && new.c_lflag
== settings
->main
.c_lflag
998 && memcmp(new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1006 /* The SYSV-style interface? */
1007 if (ioctl (fd
, waitp
? TCSETAW
: TCSETAF
, &settings
->main
) < 0)
1012 /* Vehemently Monstrous System? :-) */
1013 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1014 &settings
->main
.class, 12, 0, 0, 0, 0)
1020 /* I give up - I hope you have the BSD ioctls. */
1021 if (ioctl (fd
, (waitp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1023 #endif /* not MSDOS */
1029 /* Suivant - Do we have to get struct ltchars data? */
1031 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1035 /* How about a struct tchars and a wordful of lmode bits? */
1037 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1038 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1042 /* We have survived the tempest. */
1047 /* The initial tty mode bits */
1048 struct emacs_tty old_tty
;
1050 int term_initted
; /* 1 if outer tty status has been recorded */
1053 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1058 #ifndef F_SETOWN_BUG
1060 int old_fcntl_owner
;
1061 #endif /* F_SETOWN */
1062 #endif /* F_SETOWN_BUG */
1064 /* This may also be defined in stdio,
1065 but if so, this does no harm,
1066 and using the same name avoids wasting the other one's space. */
1068 #if defined (USG) || defined (DGUX)
1069 unsigned char _sobuf
[BUFSIZ
+8];
1071 char _sobuf
[BUFSIZ
];
1075 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1078 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1083 struct emacs_tty tty
;
1087 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1088 extern int (*interrupt_signal
) ();
1097 input_ef
= get_kbd_event_flag ();
1098 /* LIB$GET_EF (&input_ef); */
1099 SYS$
CLREF (input_ef
);
1100 waiting_for_ast
= 0;
1102 timer_ef
= get_timer_event_flag ();
1103 /* LIB$GET_EF (&timer_ef); */
1104 SYS$
CLREF (timer_ef
);
1108 LIB$
GET_EF (&process_ef
);
1109 SYS$
CLREF (process_ef
);
1111 if (input_ef
/ 32 != process_ef
/ 32)
1112 croak ("Input and process event flags in different clusters.");
1114 if (input_ef
/ 32 != timer_ef
/ 32)
1115 croak ("Input and timer event flags in different clusters.");
1117 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1118 ((unsigned) 1 << (process_ef
% 32));
1120 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1121 ((unsigned) 1 << (timer_ef
% 32));
1123 sys_access_reinit ();
1125 #endif /* not VMS */
1128 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1129 narrow_foreground_group ();
1132 EMACS_GET_TTY (input_fd
, &old_tty
);
1134 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1138 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1139 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1140 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1142 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1144 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1145 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1147 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1149 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1152 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1154 tty
.main
.c_iflag
&= ~IXANY
;
1158 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1159 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1161 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1165 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1166 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1169 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1170 /* Set up C-g for both SIGQUIT and SIGINT.
1171 We don't know which we will get, but we handle both alike
1172 so which one it really gives us does not matter. */
1173 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1174 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1175 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1177 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1180 #if defined (mips) || defined (HAVE_TCATTR)
1182 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1185 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1186 #endif /* V_DSUSP */
1187 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1188 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1191 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1194 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1195 #endif /* VREPRINT */
1197 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1198 #endif /* VWERASE */
1200 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1201 #endif /* VDISCARD */
1202 #endif /* mips or HAVE_TCATTR */
1205 /* AIX enhanced edit loses NULs, so disable it */
1206 tty
.main
.c_line
= 0;
1207 tty
.main
.c_iflag
&= ~ASCEDIT
;
1209 tty
.main
.c_cc
[VSTRT
] = 255;
1210 tty
.main
.c_cc
[VSTOP
] = 255;
1211 tty
.main
.c_cc
[VSUSP
] = 255;
1212 tty
.main
.c_cc
[VDSUSP
] = 255;
1213 #endif /* IBMR2AIX */
1214 /* Also, PTY overloads NUL and BREAK.
1215 don't ignore break, but don't signal either, so it looks like NUL.
1216 This really serves a purpose only if running in an XTERM window
1217 or via TELNET or the like, but does no harm elsewhere. */
1218 tty
.main
.c_iflag
&= ~IGNBRK
;
1219 tty
.main
.c_iflag
&= ~BRKINT
;
1221 #else /* if not HAVE_TERMIO */
1223 tty
.main
.tt_char
|= TT$M_NOECHO
;
1225 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1227 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1229 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1230 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1231 #else /* not VMS (BSD, that is) */
1233 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1235 tty
.main
.sg_flags
|= ANYP
;
1236 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1238 #endif /* not VMS (BSD, that is) */
1239 #endif /* not HAVE_TERMIO */
1241 /* If going to use CBREAK mode, we must request C-g to interrupt
1242 and turn off start and stop chars, etc. If not going to use
1243 CBREAK mode, do this anyway so as to turn off local flow
1244 control for user coming over network on 4.2; in this case,
1245 only t_stopc and t_startc really matter. */
1248 /* Note: if not using CBREAK mode, it makes no difference how we
1250 tty
.tchars
= new_tchars
;
1251 tty
.tchars
.t_intrc
= quit_char
;
1254 tty
.tchars
.t_startc
= '\021';
1255 tty
.tchars
.t_stopc
= '\023';
1258 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1260 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1261 anything, and leaving it in breaks the meta key. Go figure. */
1262 tty
.lmode
&= ~LLITOUT
;
1269 #endif /* HAVE_TCHARS */
1270 #endif /* not HAVE_TERMIO */
1273 tty
.ltchars
= new_ltchars
;
1274 #endif /* HAVE_LTCHARS */
1275 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1276 internal_terminal_init ();
1280 EMACS_SET_TTY (input_fd
, &tty
, 0);
1282 /* This code added to insure that, if flow-control is not to be used,
1283 we have an unlocked terminal at the start. */
1286 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1290 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1298 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1299 to be only LF. This is the way that is done. */
1302 if (ioctl (1, HFTGETID
, &tty
) != -1)
1303 write (1, "\033[20l", 5);
1309 /* Appears to do nothing when in PASTHRU mode.
1310 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1311 interrupt_signal, oob_chars, 0, 0, 0, 0);
1313 queue_kbd_input (0);
1318 #ifndef F_SETOWN_BUG
1319 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1320 if (interrupt_input
)
1322 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1323 fcntl (input_fd
, F_SETOWN
, getpid ());
1326 #endif /* F_GETOWN */
1327 #endif /* F_SETOWN_BUG */
1328 #endif /* F_SETFL */
1331 if (interrupt_input
)
1335 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1339 /* This symbol is defined on recent USG systems.
1340 Someone says without this call USG won't really buffer the file
1341 even with a call to setbuf. */
1342 setvbuf (stdout
, _sobuf
, _IOFBF
, sizeof _sobuf
);
1344 setbuf (stdout
, _sobuf
);
1346 set_terminal_modes ();
1347 if (term_initted
&& no_redraw_on_reenter
)
1349 if (display_completed
)
1350 direct_output_forward_char (0);
1356 if (FRAMEP (Vterminal_frame
))
1357 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1364 /* Return nonzero if safe to use tabs in output.
1365 At the time this is called, init_sys_modes has not been done yet. */
1369 struct emacs_tty tty
;
1371 EMACS_GET_TTY (input_fd
, &tty
);
1372 return EMACS_TTY_TABS_OK (&tty
);
1375 /* Get terminal size from system.
1376 Store number of lines into *heightp and width into *widthp.
1377 If zero or a negative number is stored, the value is not valid. */
1379 get_frame_size (widthp
, heightp
)
1380 int *widthp
, *heightp
;
1386 struct winsize size
;
1388 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1389 *widthp
= *heightp
= 0;
1392 *widthp
= size
.ws_col
;
1393 *heightp
= size
.ws_row
;
1399 /* SunOS - style. */
1400 struct ttysize size
;
1402 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1403 *widthp
= *heightp
= 0;
1406 *widthp
= size
.ts_cols
;
1407 *heightp
= size
.ts_lines
;
1413 struct sensemode tty
;
1415 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1416 &tty
.class, 12, 0, 0, 0, 0);
1417 *widthp
= tty
.scr_wid
;
1418 *heightp
= tty
.scr_len
;
1422 *widthp
= ScreenCols ();
1423 *heightp
= ScreenRows ();
1424 #else /* system doesn't know size */
1429 #endif /* not VMS */
1430 #endif /* not SunOS-style */
1431 #endif /* not BSD-style */
1435 /* Prepare the terminal for exiting Emacs; move the cursor to the
1436 bottom of the frame, turn off interrupt-driven I/O, etc. */
1446 if (read_socket_hook
|| !EQ (Vwindow_system
, Qnil
))
1448 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1449 clear_end_of_line (FRAME_WIDTH (selected_frame
));
1450 /* clear_end_of_line may move the cursor */
1451 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1454 /* HFT devices normally use ^J as a LF/CR. We forced it to
1455 do the LF only. Now, we need to reset it. */
1458 if (ioctl (1, HFTGETID
, &tty
) != -1)
1459 write (1, "\033[20h", 5);
1463 reset_terminal_modes ();
1467 /* Avoid possible loss of output when changing terminal modes. */
1468 fsync (fileno (stdout
));
1473 #ifndef F_SETOWN_BUG
1474 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1475 if (interrupt_input
)
1478 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1480 #endif /* F_SETOWN */
1481 #endif /* F_SETOWN_BUG */
1482 #endif /* F_SETFL */
1484 if (interrupt_input
)
1488 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1491 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1500 widen_foreground_group ();
1506 /* Set up the proper status flags for use of a pty. */
1511 /* I'm told that TOICREMOTE does not mean control chars
1512 "can't be sent" but rather that they don't have
1513 input-editing or signaling effects.
1514 That should be good, because we have other ways
1515 to do those things in Emacs.
1516 However, telnet mode seems not to work on 4.2.
1517 So TIOCREMOTE is turned off now. */
1519 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1520 will hang. In particular, the "timeout" feature (which
1521 causes a read to return if there is no data available)
1522 does this. Also it is known that telnet mode will hang
1523 in such a way that Emacs must be stopped (perhaps this
1524 is the same problem).
1526 If TIOCREMOTE is turned off, then there is a bug in
1527 hp-ux which sometimes loses data. Apparently the
1528 code which blocks the master process when the internal
1529 buffer fills up does not work. Other than this,
1530 though, everything else seems to work fine.
1532 Since the latter lossage is more benign, we may as well
1533 lose that way. -- cph */
1538 ioctl (fd
, FIONBIO
, &on
);
1543 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1544 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1545 /* cause EMACS not to die when it should, i.e., when its own controlling */
1546 /* tty goes away. I've complained to the AIX developers, and they may */
1547 /* change this behavior, but I'm not going to hold my breath. */
1548 signal (SIGHUP
, SIG_IGN
);
1551 #endif /* HAVE_PTYS */
1555 /* Assigning an input channel is done at the start of Emacs execution.
1556 This is called each time Emacs is resumed, also, but does nothing
1557 because input_chain is no longer zero. */
1565 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1571 /* Deassigning the input channel is done before exiting. */
1575 return SYS$
DASSGN (input_fd
);
1580 /* Request reading one character into the keyboard buffer.
1581 This is done as soon as the buffer becomes empty. */
1586 extern kbd_input_ast ();
1588 waiting_for_ast
= 0;
1590 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1591 &input_iosb
, kbd_input_ast
, 1,
1592 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1597 /* Ast routine that is called when keyboard input comes in
1598 in accord with the SYS$QIO above. */
1602 register int c
= -1;
1603 int old_errno
= errno
;
1604 extern EMACS_TIME
*input_available_clear_time
;
1606 if (waiting_for_ast
)
1607 SYS$
SETEF (input_ef
);
1608 waiting_for_ast
= 0;
1611 if (input_count
== 25)
1613 printf ("Ast # %d,", input_count
);
1614 printf (" iosb = %x, %x, %x, %x",
1615 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1618 if (input_iosb
.offset
)
1622 printf (", char = 0%o", c
);
1634 struct input_event e
;
1635 e
.kind
= ascii_keystroke
;
1636 XSET (e
.code
, Lisp_Int
, c
);
1638 XSET(e
.frame_or_window
, Lisp_Frame
, selected_frame
);
1640 e
.frame_or_window
= Qnil
;
1642 kbd_buffer_store_event (&e
);
1644 if (input_available_clear_time
)
1645 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1649 /* Wait until there is something in kbd_buffer. */
1651 wait_for_kbd_input ()
1653 extern int have_process_input
, process_exited
;
1655 /* If already something, avoid doing system calls. */
1656 if (detect_input_pending ())
1660 /* Clear a flag, and tell ast routine above to set it. */
1661 SYS$
CLREF (input_ef
);
1662 waiting_for_ast
= 1;
1663 /* Check for timing error: ast happened while we were doing that. */
1664 if (!detect_input_pending ())
1666 /* No timing error: wait for flag to be set. */
1667 set_waiting_for_input (0);
1668 SYS$
WFLOR (input_ef
, input_eflist
);
1669 clear_waiting_for_input (0);
1670 if (!detect_input_pending ())
1671 /* Check for subprocess input availability */
1673 int dsp
= have_process_input
|| process_exited
;
1675 SYS$
CLREF (process_ef
);
1676 if (have_process_input
)
1677 process_command_input ();
1682 update_mode_lines
++;
1683 prepare_menu_bars ();
1684 redisplay_preserve_echo_area ();
1688 waiting_for_ast
= 0;
1691 /* Get rid of any pending QIO, when we are about to suspend
1692 or when we want to throw away pending input.
1693 We wait for a positive sign that the AST routine has run
1694 and therefore there is no I/O request queued when we return.
1695 SYS$SETAST is used to avoid a timing error. */
1700 printf ("At end_kbd_input.\n");
1704 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1706 SYS$
CANCEL (input_fd
);
1711 /* Clear a flag, and tell ast routine above to set it. */
1712 SYS$
CLREF (input_ef
);
1713 waiting_for_ast
= 1;
1715 SYS$
CANCEL (input_fd
);
1717 SYS$
WAITFR (input_ef
);
1718 waiting_for_ast
= 0;
1721 /* Wait for either input available or time interval expiry. */
1723 input_wait_timeout (timeval
)
1724 int timeval
; /* Time to wait, in seconds */
1727 static int zero
= 0;
1728 static int large
= -10000000;
1730 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1732 /* If already something, avoid doing system calls. */
1733 if (detect_input_pending ())
1737 /* Clear a flag, and tell ast routine above to set it. */
1738 SYS$
CLREF (input_ef
);
1739 waiting_for_ast
= 1;
1740 /* Check for timing error: ast happened while we were doing that. */
1741 if (!detect_input_pending ())
1743 /* No timing error: wait for flag to be set. */
1745 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1746 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1748 waiting_for_ast
= 0;
1751 /* The standard `sleep' routine works some other way
1752 and it stops working if you have ever quit out of it.
1753 This one continues to work. */
1759 static int zero
= 0;
1760 static int large
= -10000000;
1762 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1765 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1766 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
1781 croak ("request sigio");
1786 croak ("unrequest sigio");
1791 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
1796 #ifndef SYSTEM_MALLOC
1803 /* Some systems that cannot dump also cannot implement these. */
1806 * Return the address of the start of the text segment prior to
1807 * doing an unexec. After unexec the return value is undefined.
1808 * See crt0.c for further explanation and _start.
1812 #if !defined (CANNOT_UNEXEC) && !defined (HAVE_TEXT_START)
1817 return ((char *) TEXT_START
);
1821 return ((char *) csrt
);
1822 #else /* not GOULD */
1823 extern int _start ();
1824 return ((char *) _start
);
1826 #endif /* TEXT_START */
1828 #endif /* not CANNOT_UNEXEC and not HAVE_TEXT_START */
1831 * Return the address of the start of the data segment prior to
1832 * doing an unexec. After unexec the return value is undefined.
1833 * See crt0.c for further information and definition of data_start.
1835 * Apparently, on BSD systems this is etext at startup. On
1836 * USG systems (swapping) this is highly mmu dependent and
1837 * is also dependent on whether or not the program is running
1838 * with shared text. Generally there is a (possibly large)
1839 * gap between end of text and start of data with shared text.
1841 * On Uniplus+ systems with shared text, data starts at a
1842 * fixed address. Each port (from a given oem) is generally
1843 * different, and the specific value of the start of data can
1844 * be obtained via the UniPlus+ specific "uvar" system call,
1845 * however the method outlined in crt0.c seems to be more portable.
1847 * Probably what will have to happen when a USG unexec is available,
1848 * at least on UniPlus, is temacs will have to be made unshared so
1849 * that text and data are contiguous. Then once loadup is complete,
1850 * unexec will produce a shared executable where the data can be
1851 * at the normal shared text boundry and the startofdata variable
1852 * will be patched by unexec to the correct value.
1860 return ((char *) DATA_START
);
1862 #ifdef ORDINARY_LINK
1864 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
1865 * data_start isn't defined. We take the address of environ, which
1866 * is known to live at or near the start of the system crt0.c, and
1867 * we don't sweat the handful of bytes that might lose.
1869 extern char **environ
;
1871 return((char *) &environ
);
1873 extern int data_start
;
1874 return ((char *) &data_start
);
1875 #endif /* ORDINARY_LINK */
1876 #endif /* DATA_START */
1878 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
1881 /* Some systems that cannot dump also cannot implement these. */
1884 * Return the address of the end of the text segment prior to
1885 * doing an unexec. After unexec the return value is undefined.
1892 return ((char *) TEXT_END
);
1895 return ((char *) &etext
);
1900 * Return the address of the end of the data segment prior to
1901 * doing an unexec. After unexec the return value is undefined.
1908 return ((char *) DATA_END
);
1911 return ((char *) &edata
);
1915 #endif /* not CANNOT_DUMP */
1917 /* get_system_name returns as its value
1918 a string for the Lisp function system-name to return. */
1924 /* Can't have this within the function since `static' is #defined to
1925 nothing for some USG systems. */
1926 static char *get_system_name_cache
;
1927 static int get_system_name_predump_p
;
1932 #include <sys/socket.h>
1934 #endif /* HAVE_SOCKETS */
1935 #endif /* not VMS */
1936 #endif /* not BSD4_1 */
1945 /* If the cached value is from before the dump, and we've dumped
1946 since then, then the cached value is no good. */
1947 if (get_system_name_predump_p
&& initialized
&& get_system_name_cache
)
1949 xfree (get_system_name_cache
);
1950 get_system_name_cache
= 0;
1953 if (!get_system_name_cache
)
1955 /* No cached value, so get the name from the system. */
1958 if ((sp
= egetenv ("SYS$NODE")) == 0)
1964 if ((end
= index (sp
, ':')) != 0)
1967 get_system_name_cache
= (char *) xmalloc (strlen (sp
) + 1);
1968 strcpy (get_system_name_cache
, sp
);
1970 #ifndef HAVE_GETHOSTNAME
1973 get_system_name_cache
= (char *) xmalloc (strlen (uts
.nodename
) + 1);
1974 strcpy (get_system_name_cache
, uts
.nodename
);
1975 #else /* HAVE_GETHOSTNAME */
1977 int hostname_size
= 256;
1978 char *hostname
= (char *) xmalloc (hostname_size
);
1980 /* Try to get the host name; if the buffer is too short, try
1981 again. Apparently, the only indication gethostname gives of
1982 whether the buffer was large enough is the presence or absence
1983 of a '\0' in the string. Eech. */
1986 gethostname (hostname
, hostname_size
- 1);
1987 hostname
[hostname_size
- 1] = '\0';
1989 /* Was the buffer large enough for the '\0'? */
1990 if (strlen (hostname
) < hostname_size
- 1)
1993 hostname_size
<<= 1;
1994 hostname
= (char *) xrealloc (hostname
, hostname_size
);
1996 get_system_name_cache
= hostname
;
1998 /* Turn the hostname into the official, fully-qualified hostname.
1999 Don't do this if we're going to dump; this can confuse system
2000 libraries on some machines and make the dumped emacs core dump. */
2003 #endif /* not CANNOT_DUMP */
2005 struct hostent
*hp
= gethostbyname (hostname
);
2008 char *fqdn
= hp
->h_name
;
2009 if (!index (fqdn
, '.'))
2011 /* We still don't have a fully qualified domain name.
2012 Try to find one in the list of alternate names */
2013 char **alias
= hp
->h_aliases
;
2014 while (*alias
&& !index (*alias
, '.'))
2019 hostname
= (char *) xrealloc (hostname
, strlen (fqdn
) + 1);
2020 strcpy (hostname
, fqdn
);
2023 #endif /* HAVE_SOCKETS */
2024 get_system_name_cache
= hostname
;
2026 #endif /* HAVE_GETHOSTNAME */
2029 get_system_name_predump_p
= !initialized
;
2032 return (get_system_name_cache
);
2039 #ifdef HAVE_X_WINDOWS
2040 /* Cause explanatory error message at compile time,
2041 since the select emulation is not good enough for X. */
2042 int *x
= &x_windows_lose_if_no_select_system_call
;
2045 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2046 * Only checks read descriptors.
2048 /* How long to wait between checking fds in select */
2049 #define SELECT_PAUSE 1
2052 /* For longjmp'ing back to read_input_waiting. */
2054 jmp_buf read_alarm_throw
;
2056 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2057 The read_socket_hook function sets this to 1 while it is waiting. */
2059 int read_alarm_should_throw
;
2067 #else /* not BSD4_1 */
2068 signal (SIGALRM
, SIG_IGN
);
2069 #endif /* not BSD4_1 */
2070 if (read_alarm_should_throw
)
2071 longjmp (read_alarm_throw
, 1);
2074 /* Only rfds are checked. */
2076 select (nfds
, rfds
, wfds
, efds
, timeout
)
2078 int *rfds
, *wfds
, *efds
, *timeout
;
2080 int ravail
= 0, orfds
= 0, old_alarm
;
2081 int timeoutval
= timeout
? *timeout
: 100000;
2082 int *local_timeout
= &timeoutval
;
2083 extern int proc_buffered_char
[];
2084 #ifndef subprocesses
2085 int process_tick
= 0, update_tick
= 0;
2087 extern int process_tick
, update_tick
;
2089 SIGTYPE (*old_trap
) ();
2102 /* If we are looking only for the terminal, with no timeout,
2103 just read it and wait -- that's more efficient. */
2104 if (orfds
== 1 && *local_timeout
== 100000 && process_tick
== update_tick
)
2106 if (! detect_input_pending ())
2107 read_input_waiting ();
2112 /* Once a second, till the timer expires, check all the flagged read
2113 * descriptors to see if any input is available. If there is some then
2114 * set the corresponding bit in the return copy of rfds.
2118 register int to_check
, bit
, fd
;
2122 for (to_check
= nfds
, bit
= 1, fd
= 0; --to_check
>= 0; bit
<<= 1, fd
++)
2126 int avail
= 0, status
= 0;
2129 avail
= detect_input_pending (); /* Special keyboard handler */
2133 status
= ioctl (fd
, FIONREAD
, &avail
);
2134 #else /* no FIONREAD */
2136 abort (); /* I don't think we need it. */
2137 #else /* not MSDOS */
2138 /* Hoping it will return -1 if nothing available
2139 or 0 if all 0 chars requested are read. */
2140 if (proc_buffered_char
[fd
] >= 0)
2144 avail
= read (fd
, &buf
, 1);
2146 proc_buffered_char
[fd
] = buf
;
2148 #endif /* not MSDOS */
2149 #endif /* no FIONREAD */
2151 if (status
>= 0 && avail
> 0)
2159 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2161 old_alarm
= alarm (0);
2162 old_trap
= signal (SIGALRM
, select_alarm
);
2164 alarm (SELECT_PAUSE
);
2165 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2166 while (select_alarmed
== 0 && *local_timeout
!= 0
2167 && process_tick
== update_tick
)
2170 sleep_or_kbd_hit (SELECT_PAUSE
, (orfds
& 1) != 0);
2172 #else /* not MSDOS */
2173 /* If we are interested in terminal input,
2174 wait by reading the terminal.
2175 That makes instant wakeup for terminal input at least. */
2178 read_input_waiting ();
2179 if (detect_input_pending ())
2184 #endif /* not MSDOS */
2186 (*local_timeout
) -= SELECT_PAUSE
;
2187 /* Reset the old alarm if there was one */
2189 signal (SIGALRM
, old_trap
);
2192 /* Reset or forge an interrupt for the original handler. */
2193 old_alarm
-= SELECT_PAUSE
;
2195 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2199 if (*local_timeout
== 0) /* Stop on timer being cleared */
2205 /* Read keyboard input into the standard buffer,
2206 waiting for at least one character. */
2208 /* Make all keyboard buffers much bigger when using X windows. */
2209 #ifdef HAVE_X_WINDOWS
2210 #define BUFFER_SIZE_FACTOR 16
2212 #define BUFFER_SIZE_FACTOR 1
2215 read_input_waiting ()
2217 struct input_event e
;
2219 extern int quit_char
;
2221 if (read_socket_hook
)
2223 struct input_event buf
[256];
2225 read_alarm_should_throw
= 0;
2226 if (! setjmp (read_alarm_throw
))
2227 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2231 /* Scan the chars for C-g and store them in kbd_buffer. */
2232 for (i
= 0; i
< nread
; i
++)
2234 kbd_buffer_store_event (&buf
[i
]);
2235 /* Don't look at input that follows a C-g too closely.
2236 This reduces lossage due to autorepeat on C-g. */
2237 if (buf
[i
].kind
== ascii_keystroke
2238 && XINT(buf
[i
].code
) == quit_char
)
2245 nread
= read (fileno (stdin
), buf
, 1);
2247 /* Scan the chars for C-g and store them in kbd_buffer. */
2248 e
.kind
= ascii_keystroke
;
2249 e
.frame_or_window
= selected_frame
;
2251 for (i
= 0; i
< nread
; i
++)
2253 /* Convert chars > 0177 to meta events if desired.
2254 We do this under the same conditions that read_avail_input does. */
2255 if (read_socket_hook
== 0)
2257 /* If the user says she has a meta key, then believe her. */
2258 if (meta_key
== 1 && (buf
[i
] & 0x80))
2259 e
.modifiers
= meta_modifier
;
2264 XSET (e
.code
, Lisp_Int
, buf
[i
]);
2265 kbd_buffer_store_event (&e
);
2266 /* Don't look at input that follows a C-g too closely.
2267 This reduces lossage due to autorepeat on C-g. */
2268 if (buf
[i
] == quit_char
)
2274 #endif /* not HAVE_SELECT */
2275 #endif /* not VMS */
2279 * Partially emulate 4.2 open call.
2280 * open is defined as this in 4.1.
2282 * - added by Michael Bloom @ Citicorp/TTI
2287 sys_open (path
, oflag
, mode
)
2291 if (oflag
& O_CREAT
)
2292 return creat (path
, mode
);
2294 return open (path
, oflag
);
2301 lmode
= LINTRUP
| lmode
;
2302 ioctl (0, TIOCLSET
, &lmode
);
2309 lmode
= ~LINTRUP
& lmode
;
2310 ioctl (0, TIOCLSET
, &lmode
);
2317 interrupts_deferred
= 0;
2324 interrupts_deferred
= 1;
2327 /* still inside #ifdef BSD4_1 */
2330 int sigheld
; /* Mask of held signals */
2335 sigheld
|= sigbit (signum
);
2342 sigheld
|= sigbit (signum
);
2348 sigheld
&= ~sigbit (signum
);
2352 sigfree () /* Free all held signals */
2355 for (i
= 0; i
< NSIG
; i
++)
2356 if (sigheld
& sigbit (i
))
2363 return 1 << (i
- 1);
2365 #endif /* subprocesses */
2368 /* POSIX signals support - DJB */
2369 /* Anyone with POSIX signals should have ANSI C declarations */
2371 #ifdef POSIX_SIGNALS
2373 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2374 static struct sigaction new_action
, old_action
;
2378 sigemptyset (&empty_mask
);
2379 sigfillset (&full_mask
);
2383 sys_signal (int signal_number
, signal_handler_t action
)
2386 /* This gets us restartable system calls for efficiency.
2387 The "else" code will works as well. */
2388 return (berk_signal (signal_number
, action
));
2390 sigemptyset (&new_action
.sa_mask
);
2391 new_action
.sa_handler
= action
;
2393 /* Emacs mostly works better with restartable system services. If this
2394 * flag exists, we probably want to turn it on here.
2396 new_action
.sa_flags
= SA_RESTART
;
2398 new_action
.sa_flags
= 0;
2400 sigaction (signal_number
, &new_action
, &old_action
);
2401 return (old_action
.sa_handler
);
2406 /* If we're compiling with GCC, we don't need this function, since it
2407 can be written as a macro. */
2409 sys_sigmask (int sig
)
2412 sigemptyset (&mask
);
2413 sigaddset (&mask
, sig
);
2419 sys_sigpause (sigset_t new_mask
)
2421 /* pause emulating berk sigpause... */
2422 sigsuspend (&new_mask
);
2426 /* I'd like to have these guys return pointers to the mask storage in here,
2427 but there'd be trouble if the code was saving multiple masks. I'll be
2428 safe and pass the structure. It normally won't be more than 2 bytes
2432 sys_sigblock (sigset_t new_mask
)
2435 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2440 sys_sigunblock (sigset_t new_mask
)
2443 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2448 sys_sigsetmask (sigset_t new_mask
)
2451 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2455 #endif /* POSIX_SIGNALS */
2464 register int length
;
2468 long max_str
= 65535;
2470 while (length
> max_str
) {
2471 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2476 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2478 while (length
-- > 0)
2480 #endif /* not VMS */
2483 #endif /* no bzero */
2486 /* Saying `void' requires a declaration, above, where bcopy is used
2487 and that declaration causes pain for systems where bcopy is a macro. */
2488 bcopy (b1
, b2
, length
)
2491 register int length
;
2494 long max_str
= 65535;
2496 while (length
> max_str
) {
2497 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
2503 (void) LIB$
MOVC3 (&length
, b1
, b2
);
2505 while (length
-- > 0)
2507 #endif /* not VMS */
2509 #endif /* no bcopy */
2513 bcmp (b1
, b2
, length
) /* This could be a macro! */
2516 register int length
;
2519 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
2520 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
2522 return STR$
COMPARE (&src1
, &src2
);
2524 while (length
-- > 0)
2529 #endif /* not VMS */
2531 #endif /* no bcmp */
2533 #endif /* not BSTRING */
2538 * The BSD random returns numbers in the range of
2539 * 0 to 2e31 - 1. The USG rand returns numbers in the
2540 * range of 0 to 2e15 - 1. This is probably not significant
2547 /* Arrange to return a range centered on zero. */
2548 return (rand () << 15) + rand () - (1 << 29);
2562 /* Arrange to return a range centered on zero. */
2563 return (rand () << 15) + rand () - (1 << 29);
2574 #ifdef WRONG_NAME_INSQUE
2587 /* If any place else asks for the TERM variable,
2588 allow it to be overridden with the EMACS_TERM variable
2589 before attempting to translate the logical name TERM. As a last
2590 resort, ask for VAX C's special idea of the TERM variable. */
2597 static char buf
[256];
2598 static struct dsc$descriptor_s equiv
2599 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2600 static struct dsc$descriptor_s d_name
2601 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2604 if (!strcmp (name
, "TERM"))
2606 val
= (char *) getenv ("EMACS_TERM");
2611 d_name
.dsc$w_length
= strlen (name
);
2612 d_name
.dsc$a_pointer
= name
;
2613 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2615 char *str
= (char *) xmalloc (eqlen
+ 1);
2616 bcopy (buf
, str
, eqlen
);
2618 /* This is a storage leak, but a pain to fix. With luck,
2619 no one will ever notice. */
2622 return (char *) getenv (name
);
2627 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2628 to force a call on the debugger from within the image. */
2633 LIB$
SIGNAL (SS$_DEBUG
);
2639 #ifdef LINK_CRTL_SHARE
2640 #ifdef SHAREABLE_LIB_BUG
2641 /* Variables declared noshare and initialized in sharable libraries
2642 cannot be shared. The VMS linker incorrectly forces you to use a private
2643 version which is uninitialized... If not for this "feature", we
2644 could use the C library definition of sys_nerr and sys_errlist. */
2646 char *sys_errlist
[] =
2650 "no such file or directory",
2652 "interrupted system call",
2654 "no such device or address",
2655 "argument list too long",
2656 "exec format error",
2659 "no more processes",
2660 "not enough memory",
2661 "permission denied",
2663 "block device required",
2664 "mount devices busy",
2666 "cross-device link",
2671 "file table overflow",
2672 "too many open files",
2676 "no space left on device",
2678 "read-only file system",
2684 "vax/vms specific error code nontranslatable error"
2686 #endif /* SHAREABLE_LIB_BUG */
2687 #endif /* LINK_CRTL_SHARE */
2690 #ifndef HAVE_STRERROR
2695 extern char *sys_errlist
[];
2696 extern int sys_nerr
;
2698 if (errnum
>= 0 && errnum
< sys_nerr
)
2699 return sys_errlist
[errnum
];
2700 return (char *) "Unknown error";
2703 #endif /* ! HAVE_STRERROR */
2705 #ifdef INTERRUPTIBLE_OPEN
2709 sys_open (path
, oflag
, mode
)
2713 register int rtnval
;
2715 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2716 && (errno
== EINTR
));
2720 #endif /* INTERRUPTIBLE_OPEN */
2722 #ifdef INTERRUPTIBLE_CLOSE
2727 register int rtnval
;
2729 while ((rtnval
= close (fd
)) == -1
2730 && (errno
== EINTR
));
2734 #endif /* INTERRUPTIBLE_CLOSE */
2736 #ifdef INTERRUPTIBLE_IO
2739 sys_read (fildes
, buf
, nbyte
)
2744 register int rtnval
;
2746 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2747 && (errno
== EINTR
));
2752 sys_write (fildes
, buf
, nbyte
)
2757 register int rtnval
, bytes_written
;
2763 rtnval
= write (fildes
, buf
, nbyte
);
2770 return (bytes_written
? bytes_written
: -1);
2775 bytes_written
+= rtnval
;
2777 return (bytes_written
);
2780 #endif /* INTERRUPTIBLE_IO */
2785 * Substitute fork for vfork on USG flavors.
2793 #endif /* not HAVE_VFORK */
2797 * All of the following are for USG.
2799 * On USG systems the system calls are INTERRUPTIBLE by signals
2800 * that the user program has elected to catch. Thus the system call
2801 * must be retried in these cases. To handle this without massive
2802 * changes in the source code, we remap the standard system call names
2803 * to names for our own functions in sysdep.c that do the system call
2804 * with retries. Actually, for portability reasons, it is good
2805 * programming practice, as this example shows, to limit all actual
2806 * system calls to a single occurrence in the source. Sure, this
2807 * adds an extra level of function call overhead but it is almost
2808 * always negligible. Fred Fish, Unisoft Systems Inc.
2811 #ifndef HAVE_SYS_SIGLIST
2812 char *sys_siglist
[NSIG
+ 1] =
2815 /* AIX has changed the signals a bit */
2816 "bogus signal", /* 0 */
2817 "hangup", /* 1 SIGHUP */
2818 "interrupt", /* 2 SIGINT */
2819 "quit", /* 3 SIGQUIT */
2820 "illegal instruction", /* 4 SIGILL */
2821 "trace trap", /* 5 SIGTRAP */
2822 "IOT instruction", /* 6 SIGIOT */
2823 "crash likely", /* 7 SIGDANGER */
2824 "floating point exception", /* 8 SIGFPE */
2825 "kill", /* 9 SIGKILL */
2826 "bus error", /* 10 SIGBUS */
2827 "segmentation violation", /* 11 SIGSEGV */
2828 "bad argument to system call", /* 12 SIGSYS */
2829 "write on a pipe with no one to read it", /* 13 SIGPIPE */
2830 "alarm clock", /* 14 SIGALRM */
2831 "software termination signum", /* 15 SIGTERM */
2832 "user defined signal 1", /* 16 SIGUSR1 */
2833 "user defined signal 2", /* 17 SIGUSR2 */
2834 "death of a child", /* 18 SIGCLD */
2835 "power-fail restart", /* 19 SIGPWR */
2836 "bogus signal", /* 20 */
2837 "bogus signal", /* 21 */
2838 "bogus signal", /* 22 */
2839 "bogus signal", /* 23 */
2840 "bogus signal", /* 24 */
2841 "LAN I/O interrupt", /* 25 SIGAIO */
2842 "PTY I/O interrupt", /* 26 SIGPTY */
2843 "I/O intervention required", /* 27 SIGIOINT */
2844 "HFT grant", /* 28 SIGGRANT */
2845 "HFT retract", /* 29 SIGRETRACT */
2846 "HFT sound done", /* 30 SIGSOUND */
2847 "HFT input ready", /* 31 SIGMSG */
2849 "bogus signal", /* 0 */
2850 "hangup", /* 1 SIGHUP */
2851 "interrupt", /* 2 SIGINT */
2852 "quit", /* 3 SIGQUIT */
2853 "illegal instruction", /* 4 SIGILL */
2854 "trace trap", /* 5 SIGTRAP */
2855 "IOT instruction", /* 6 SIGIOT */
2856 "EMT instruction", /* 7 SIGEMT */
2857 "floating point exception", /* 8 SIGFPE */
2858 "kill", /* 9 SIGKILL */
2859 "bus error", /* 10 SIGBUS */
2860 "segmentation violation", /* 11 SIGSEGV */
2861 "bad argument to system call", /* 12 SIGSYS */
2862 "write on a pipe with no one to read it", /* 13 SIGPIPE */
2863 "alarm clock", /* 14 SIGALRM */
2864 "software termination signum", /* 15 SIGTERM */
2865 "user defined signal 1", /* 16 SIGUSR1 */
2866 "user defined signal 2", /* 17 SIGUSR2 */
2867 "death of a child", /* 18 SIGCLD */
2868 "power-fail restart", /* 19 SIGPWR */
2870 "window size change", /* 20 SIGWINCH */
2871 "urgent socket condition", /* 21 SIGURG */
2872 "pollable event occured", /* 22 SIGPOLL */
2873 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
2874 "user stop requested from tty", /* 24 SIGTSTP */
2875 "stopped process has been continued", /* 25 SIGCONT */
2876 "background tty read attempted", /* 26 SIGTTIN */
2877 "background tty write attempted", /* 27 SIGTTOU */
2878 "virtual timer expired", /* 28 SIGVTALRM */
2879 "profiling timer expired", /* 29 SIGPROF */
2880 "exceeded cpu limit", /* 30 SIGXCPU */
2881 "exceeded file size limit", /* 31 SIGXFSZ */
2882 "process's lwps are blocked", /* 32 SIGWAITING */
2883 "special signal used by thread library", /* 33 SIGLWP */
2884 "Special Signal Used By CPR", /* 34 SIGFREEZE */
2885 "Special Signal Used By CPR", /* 35 SIGTHAW */
2887 #endif /* not AIX */
2890 #endif /* HAVE_SYS_SIGLIST */
2893 * Warning, this function may not duplicate 4.2 action properly
2894 * under error conditions.
2898 /* In 4.1, param.h fails to define this. */
2899 #define MAXPATHLEN 1024
2908 char *npath
, *spath
;
2909 extern char *getcwd ();
2911 BLOCK_INPUT
; /* getcwd uses malloc */
2912 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2915 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2916 up to first slash. Should be harmless on other systems. */
2917 while (*npath
&& *npath
!= '/')
2919 strcpy (pathname
, npath
);
2920 free (spath
); /* getcwd uses malloc */
2925 #endif /* HAVE_GETWD */
2928 * Emulate rename using unlink/link. Note that this is
2929 * only partially correct. Also, doesn't enforce restriction
2930 * that files be of same type (regular->regular, dir->dir, etc).
2939 if (access (from
, 0) == 0)
2942 if (link (from
, to
) == 0)
2943 if (unlink (from
) == 0)
2951 #ifdef MISSING_UTIMES
2953 /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */
2962 /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the
2963 utimbuf structure defined anywhere but in the man page. */
2973 struct timeval tvp
[];
2976 utb
.actime
= tvp
[0].tv_sec
;
2977 utb
.modtime
= tvp
[1].tv_sec
;
2980 #endif /* IRIS_UTIME */
2986 /* HPUX curses library references perror, but as far as we know
2987 it won't be called. Anyway this definition will do for now. */
2993 #endif /* not HAVE_PERROR */
2999 * Emulate BSD dup2. First close newd if it already exists.
3000 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3001 * until we are, then close the unsuccessful ones.
3008 register int fd
, ret
;
3013 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3015 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3022 ret
= dup2 (old
,new);
3028 #endif /* not HAVE_DUP2 */
3031 * Gettimeofday. Simulate as much as possible. Only accurate
3032 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3033 * Only needed when subprocesses are defined.
3038 #ifndef HAVE_GETTIMEOFDAY
3042 gettimeofday (tp
, tzp
)
3044 struct timezone
*tzp
;
3046 extern long time ();
3048 tp
->tv_sec
= time ((long *)0);
3051 tzp
->tz_minuteswest
= -1;
3057 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3060 * This function will go away as soon as all the stubs fixed. (fnf)
3066 printf ("%s not yet implemented\r\n", badfunc
);
3075 char *sys_siglist
[NSIG
+ 1] =
3077 "null signal", /* 0 SIGNULL */
3078 "hangup", /* 1 SIGHUP */
3079 "interrupt", /* 2 SIGINT */
3080 "quit", /* 3 SIGQUIT */
3081 "illegal instruction", /* 4 SIGILL */
3082 "trace trap", /* 5 SIGTRAP */
3083 "abort termination", /* 6 SIGABRT */
3084 "SIGEMT", /* 7 SIGEMT */
3085 "floating point exception", /* 8 SIGFPE */
3086 "kill", /* 9 SIGKILL */
3087 "bus error", /* 10 SIGBUS */
3088 "segmentation violation", /* 11 SIGSEGV */
3089 "bad argument to system call", /* 12 SIGSYS */
3090 "write on a pipe with no reader", /* 13 SIGPIPE */
3091 "alarm clock", /* 14 SIGALRM */
3092 "software termination signal", /* 15 SIGTERM */
3093 "user defined signal 1", /* 16 SIGUSR1 */
3094 "user defined signal 2", /* 17 SIGUSR2 */
3095 "child stopped or terminated", /* 18 SIGCLD */
3096 "power-fail restart", /* 19 SIGPWR */
3097 "window size changed", /* 20 SIGWINCH */
3098 "undefined", /* 21 */
3099 "pollable event occurred", /* 22 SIGPOLL */
3100 "sendable stop signal not from tty", /* 23 SIGSTOP */
3101 "stop signal from tty", /* 24 SIGSTP */
3102 "continue a stopped process", /* 25 SIGCONT */
3103 "attempted background tty read", /* 26 SIGTTIN */
3104 "attempted background tty write", /* 27 SIGTTOU */
3105 "undefined", /* 28 */
3106 "undefined", /* 29 */
3107 "undefined", /* 30 */
3108 "undefined", /* 31 */
3109 "undefined", /* 32 */
3110 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3111 "I/O is possible", /* 34 SIGIO */
3112 "exceeded cpu time limit", /* 35 SIGXCPU */
3113 "exceeded file size limit", /* 36 SIGXFSZ */
3114 "virtual time alarm", /* 37 SIGVTALRM */
3115 "profiling time alarm", /* 38 SIGPROF */
3116 "undefined", /* 39 */
3117 "file record locks revoked", /* 40 SIGLOST */
3118 "undefined", /* 41 */
3119 "undefined", /* 42 */
3120 "undefined", /* 43 */
3121 "undefined", /* 44 */
3122 "undefined", /* 45 */
3123 "undefined", /* 46 */
3124 "undefined", /* 47 */
3125 "undefined", /* 48 */
3126 "undefined", /* 49 */
3127 "undefined", /* 50 */
3128 "undefined", /* 51 */
3129 "undefined", /* 52 */
3130 "undefined", /* 53 */
3131 "undefined", /* 54 */
3132 "undefined", /* 55 */
3133 "undefined", /* 56 */
3134 "undefined", /* 57 */
3135 "undefined", /* 58 */
3136 "undefined", /* 59 */
3137 "undefined", /* 60 */
3138 "undefined", /* 61 */
3139 "undefined", /* 62 */
3140 "undefined", /* 63 */
3141 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3147 /* Directory routines for systems that don't have them. */
3149 #ifdef SYSV_SYSTEM_DIR
3153 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3157 register DIR *dirp
; /* stream from opendir */
3161 rtnval
= sys_close (dirp
->dd_fd
);
3163 /* Some systems (like Solaris) allocate the buffer and the DIR all
3164 in one block. Why in the world are we freeing this ourselves
3166 #if ! (defined (sun) && defined (USG5_4))
3167 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3169 xfree ((char *) dirp
);
3173 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3174 #endif /* SYSV_SYSTEM_DIR */
3176 #ifdef NONSYSTEM_DIR_LIBRARY
3180 char *filename
; /* name of directory */
3182 register DIR *dirp
; /* -> malloc'ed storage */
3183 register int fd
; /* file descriptor for read */
3184 struct stat sbuf
; /* result of fstat */
3186 fd
= sys_open (filename
, 0);
3191 if (fstat (fd
, &sbuf
) < 0
3192 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3193 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3197 return 0; /* bad luck today */
3202 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3209 register DIR *dirp
; /* stream from opendir */
3211 sys_close (dirp
->dd_fd
);
3212 xfree ((char *) dirp
);
3220 ino_t od_ino
; /* inode */
3221 char od_name
[DIRSIZ
]; /* filename */
3223 #endif /* not VMS */
3225 struct direct dir_static
; /* simulated directory contents */
3230 register DIR *dirp
; /* stream from opendir */
3233 register struct olddir
*dp
; /* -> directory data */
3235 register struct dir$_name
*dp
; /* -> directory data */
3236 register struct dir$_version
*dv
; /* -> version data */
3241 if (dirp
->dd_loc
>= dirp
->dd_size
)
3242 dirp
->dd_loc
= dirp
->dd_size
= 0;
3244 if (dirp
->dd_size
== 0 /* refill buffer */
3245 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3249 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3250 dirp
->dd_loc
+= sizeof (struct olddir
);
3252 if (dp
->od_ino
!= 0) /* not deleted entry */
3254 dir_static
.d_ino
= dp
->od_ino
;
3255 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3256 dir_static
.d_name
[DIRSIZ
] = '\0';
3257 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3258 dir_static
.d_reclen
= sizeof (struct direct
)
3260 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3261 return &dir_static
; /* -> simulated structure */
3264 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3265 if (dirp
->dd_loc
== 0)
3266 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3267 : dp
->dir$b_namecount
;
3268 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3269 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3270 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3271 dir_static
.d_reclen
= sizeof (struct direct
)
3273 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3274 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3275 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3276 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3283 /* readdirver is just like readdir except it returns all versions of a file
3284 as separate entries. */
3289 register DIR *dirp
; /* stream from opendir */
3291 register struct dir$_name
*dp
; /* -> directory data */
3292 register struct dir$_version
*dv
; /* -> version data */
3294 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3295 dirp
->dd_loc
= dirp
->dd_size
= 0;
3297 if (dirp
->dd_size
== 0 /* refill buffer */
3298 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3301 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3302 if (dirp
->dd_loc
== 0)
3303 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3304 : dp
->dir$b_namecount
;
3305 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3306 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3307 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3308 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3309 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3310 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3311 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3312 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3318 #endif /* NONSYSTEM_DIR_LIBRARY */
3321 /* mkdir and rmdir functions, for systems which don't have them. */
3325 * Written by Robert Rother, Mariah Corporation, August 1985.
3327 * If you want it, it's yours. All I ask in return is that if you
3328 * figure out how to do this in a Bourne Shell script you send me
3330 * sdcsvax!rmr or rmr@uscd
3332 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3333 * subroutine. 11Mar86; hoptoad!gnu
3335 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3336 * subroutine didn't return EEXIST. It does now.
3342 #ifdef MKDIR_PROTOTYPE
3346 mkdir (dpath
, dmode
)
3351 int cpid
, status
, fd
;
3352 struct stat statbuf
;
3354 if (stat (dpath
, &statbuf
) == 0)
3356 errno
= EEXIST
; /* Stat worked, so it already exists */
3360 /* If stat fails for a reason other than non-existence, return error */
3361 if (errno
!= ENOENT
)
3364 synch_process_alive
= 1;
3365 switch (cpid
= fork ())
3368 case -1: /* Error in fork */
3369 return (-1); /* Errno is set already */
3371 case 0: /* Child process */
3373 * Cheap hack to set mode of new directory. Since this
3374 * child process is going away anyway, we zap its umask.
3375 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3376 * directory. Does anybody care?
3378 status
= umask (0); /* Get current umask */
3379 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3380 fd
= sys_open("/dev/null", 2);
3387 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3388 _exit (-1); /* Can't exec /bin/mkdir */
3390 default: /* Parent process */
3391 wait_for_termination (cpid
);
3394 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3396 errno
= EIO
; /* We don't know why, but */
3397 return -1; /* /bin/mkdir failed */
3402 #endif /* not HAVE_MKDIR */
3409 int cpid
, status
, fd
;
3410 struct stat statbuf
;
3412 if (stat (dpath
, &statbuf
) != 0)
3414 /* Stat just set errno. We don't have to */
3418 synch_process_alive
= 1;
3419 switch (cpid
= fork ())
3422 case -1: /* Error in fork */
3423 return (-1); /* Errno is set already */
3425 case 0: /* Child process */
3426 fd
= sys_open("/dev/null", 2);
3433 wait_for_termination (cpid
);
3434 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3435 return -1; /* /bin/rmdir failed */
3436 default: /* Parent process */
3437 while (cpid
!= wait (&status
)); /* Wait for kid to finish */
3440 if (WIFSIGNALED (status
) || WEXITSTATUS (status
) != 0)
3442 errno
= EIO
; /* We don't know why, but */
3443 return -1; /* /bin/mkdir failed */
3448 #endif /* !HAVE_RMDIR */
3452 /* Functions for VMS */
3454 #include "vms-pwd.h"
3459 /* Return as a string the VMS error string pertaining to STATUS.
3460 Reuses the same static buffer each time it is called. */
3464 int status
; /* VMS status code */
3468 static char buf
[257];
3470 bufadr
[0] = sizeof buf
- 1;
3471 bufadr
[1] = (int) buf
;
3472 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3473 return "untranslatable VMS error status";
3481 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3482 * not work correctly. (It also doesn't work well in version 2.3.)
3487 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3488 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3492 unsigned short s_buflen
;
3493 unsigned short s_code
;
3495 unsigned short *s_retlenadr
;
3499 #define buflen s.s_buflen
3500 #define code s.s_code
3501 #define bufadr s.s_bufadr
3502 #define retlenadr s.s_retlenadr
3504 #define R_OK 4 /* test for read permission */
3505 #define W_OK 2 /* test for write permission */
3506 #define X_OK 1 /* test for execute (search) permission */
3507 #define F_OK 0 /* test for presence of file */
3510 sys_access (path
, mode
)
3514 static char *user
= NULL
;
3517 /* translate possible directory spec into .DIR file name, so brain-dead
3518 * access can treat the directory like a file. */
3519 if (directory_file_name (path
, dir_fn
))
3523 return access (path
, mode
);
3524 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3530 unsigned short int dummy
;
3532 static int constant
= ACL$C_FILE
;
3533 DESCRIPTOR (path_desc
, path
);
3534 DESCRIPTOR (user_desc
, user
);
3538 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3541 acces
|= CHP$M_READ
;
3543 acces
|= CHP$M_WRITE
;
3544 itemlst
[0].buflen
= sizeof (int);
3545 itemlst
[0].code
= CHP$_FLAGS
;
3546 itemlst
[0].bufadr
= (char *) &flags
;
3547 itemlst
[0].retlenadr
= &dummy
;
3548 itemlst
[1].buflen
= sizeof (int);
3549 itemlst
[1].code
= CHP$_ACCESS
;
3550 itemlst
[1].bufadr
= (char *) &acces
;
3551 itemlst
[1].retlenadr
= &dummy
;
3552 itemlst
[2].end
= CHP$_END
;
3553 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3554 return stat
== SS$_NORMAL
? 0 : -1;
3558 #else /* not VMS4_4 */
3561 #define ACE$M_WRITE 2
3562 #define ACE$C_KEYID 1
3564 static unsigned short memid
, grpid
;
3565 static unsigned int uic
;
3567 /* Called from init_sys_modes, so it happens not very often
3568 but at least each time Emacs is loaded. */
3569 sys_access_reinit ()
3575 sys_access (filename
, type
)
3581 int status
, size
, i
, typecode
, acl_controlled
;
3582 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3583 union prvdef prvmask
;
3585 /* Get UIC and GRP values for protection checking. */
3588 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3591 memid
= uic
& 0xFFFF;
3595 if (type
!= 2) /* not checking write access */
3596 return access (filename
, type
);
3598 /* Check write protection. */
3600 #define CHECKPRIV(bit) (prvmask.bit)
3601 #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3603 /* Find privilege bits */
3604 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3606 error ("Unable to find privileges: %s", vmserrstr (status
));
3607 if (CHECKPRIV (PRV$V_BYPASS
))
3608 return 0; /* BYPASS enabled */
3610 fab
.fab$b_fac
= FAB$M_GET
;
3611 fab
.fab$l_fna
= filename
;
3612 fab
.fab$b_fns
= strlen (filename
);
3613 fab
.fab$l_xab
= &xab
;
3614 xab
= cc$rms_xabpro
;
3615 xab
.xab$l_aclbuf
= aclbuf
;
3616 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3617 status
= SYS$
OPEN (&fab
, 0, 0);
3620 SYS$
CLOSE (&fab
, 0, 0);
3621 /* Check system access */
3622 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITEABLE (XAB$V_SYS
))
3624 /* Check ACL entries, if any */
3626 if (xab
.xab$w_acllen
> 0)
3629 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3630 while (*aclptr
&& aclptr
< aclend
)
3632 size
= (*aclptr
& 0xff) / 4;
3633 typecode
= (*aclptr
>> 8) & 0xff;
3634 if (typecode
== ACE$C_KEYID
)
3635 for (i
= size
- 1; i
> 1; i
--)
3636 if (aclptr
[i
] == uic
)
3639 if (aclptr
[1] & ACE$M_WRITE
)
3640 return 0; /* Write access through ACL */
3642 aclptr
= &aclptr
[size
];
3644 if (acl_controlled
) /* ACL specified, prohibits write access */
3647 /* No ACL entries specified, check normal protection */
3648 if (WRITEABLE (XAB$V_WLD
)) /* World writeable */
3650 if (WRITEABLE (XAB$V_GRP
) &&
3651 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3652 return 0; /* Group writeable */
3653 if (WRITEABLE (XAB$V_OWN
) &&
3654 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3655 return 0; /* Owner writeable */
3657 return -1; /* Not writeable */
3659 #endif /* not VMS4_4 */
3662 static char vtbuf
[NAM$C_MAXRSS
+1];
3664 /* translate a vms file spec to a unix path */
3666 sys_translate_vms (vfile
)
3677 /* leading device or logical name is a root directory */
3678 if (p
= strchr (vfile
, ':'))
3687 if (*p
== '[' || *p
== '<')
3689 while (*++vfile
!= *p
+ 2)
3693 if (vfile
[-1] == *p
)
3716 static char utbuf
[NAM$C_MAXRSS
+1];
3718 /* translate a unix path to a VMS file spec */
3720 sys_translate_unix (ufile
)
3743 if (index (&ufile
[1], '/'))
3750 if (index (&ufile
[1], '/'))
3757 if (strncmp (ufile
, "./", 2) == 0)
3764 ufile
++; /* skip the dot */
3765 if (index (&ufile
[1], '/'))
3770 else if (strncmp (ufile
, "../", 3) == 0)
3778 ufile
+= 2; /* skip the dots */
3779 if (index (&ufile
[1], '/'))
3804 extern char *getcwd ();
3806 #define MAXPATHLEN 1024
3808 ptr
= xmalloc (MAXPATHLEN
);
3809 val
= getcwd (ptr
, MAXPATHLEN
);
3815 strcpy (pathname
, ptr
);
3823 long item_code
= JPI$_OWNER
;
3824 unsigned long parent_id
;
3827 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
3830 vaxc$errno
= status
;
3840 return (getgid () << 16) | getuid ();
3844 sys_read (fildes
, buf
, nbyte
)
3849 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
3854 sys_write (fildes
, buf
, nbyte
)
3859 register int nwrote
, rtnval
= 0;
3861 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
3867 return rtnval
? rtnval
: -1;
3868 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
3869 return rtnval
? rtnval
: -1;
3870 return (rtnval
+ nwrote
);
3875 * VAX/VMS VAX C RTL really loses. It insists that records
3876 * end with a newline (carriage return) character, and if they
3877 * don't it adds one (nice of it isn't it!)
3879 * Thus we do this stupidity below.
3883 sys_write (fildes
, buf
, nbytes
)
3886 unsigned int nbytes
;
3893 fstat (fildes
, &st
);
3899 /* Handle fixed-length files with carriage control. */
3900 if (st
.st_fab_rfm
== FAB$C_FIX
3901 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
3903 len
= st
.st_fab_mrs
;
3904 retval
= write (fildes
, p
, min (len
, nbytes
));
3907 retval
++; /* This skips the implied carriage control */
3911 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
3912 while (*e
!= '\n' && e
> p
) e
--;
3913 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
3914 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
3916 retval
= write (fildes
, p
, len
);
3927 /* Create file NEW copying its attributes from file OLD. If
3928 OLD is 0 or does not exist, create based on the value of
3931 /* Protection value the file should ultimately have.
3932 Set by create_copy_attrs, and use by rename_sansversions. */
3933 static unsigned short int fab_final_pro
;
3936 creat_copy_attrs (old
, new)
3939 struct FAB fab
= cc$rms_fab
;
3940 struct XABPRO xabpro
;
3941 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
3942 extern int vms_stmlf_recfm
;
3946 fab
.fab$b_fac
= FAB$M_GET
;
3947 fab
.fab$l_fna
= old
;
3948 fab
.fab$b_fns
= strlen (old
);
3949 fab
.fab$l_xab
= (char *) &xabpro
;
3950 xabpro
= cc$rms_xabpro
;
3951 xabpro
.xab$l_aclbuf
= aclbuf
;
3952 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
3953 /* Call $OPEN to fill in the fab & xabpro fields. */
3954 if (SYS$
OPEN (&fab
, 0, 0) & 1)
3956 SYS$
CLOSE (&fab
, 0, 0);
3957 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
3958 if (xabpro
.xab$w_acllen
> 0)
3960 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
3961 /* If the acl buffer was too short, redo open with longer one.
3962 Wouldn't need to do this if there were some system imposed
3963 limit on the size of an ACL, but I can't find any such. */
3965 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
3966 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
3967 if (SYS$
OPEN (&fab
, 0, 0) & 1)
3968 SYS$
CLOSE (&fab
, 0, 0);
3974 xabpro
.xab$l_aclbuf
= 0;
3979 fab
.fab$l_fna
= new;
3980 fab
.fab$b_fns
= strlen (new);
3984 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
3985 fab
.fab$b_rat
= FAB$M_CR
;
3988 /* Set the file protections such that we will be able to manipulate
3989 this file. Once we are done writing and renaming it, we will set
3990 the protections back. */
3992 fab_final_pro
= xabpro
.xab$w_pro
;
3994 SYS$
SETDFPROT (0, &fab_final_pro
);
3995 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
3997 /* Create the new file with either default attrs or attrs copied
3999 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4001 SYS$
CLOSE (&fab
, 0, 0);
4002 /* As this is a "replacement" for creat, return a file descriptor
4003 opened for writing. */
4004 return open (new, O_WRONLY
);
4009 #include <varargs.h>
4012 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4016 sys_creat (va_alist
)
4019 va_list list_incrementer
;
4022 int rfd
; /* related file descriptor */
4023 int fd
; /* Our new file descriptor */
4030 extern int vms_stmlf_recfm
;
4033 va_start (list_incrementer
);
4034 name
= va_arg (list_incrementer
, char *);
4035 mode
= va_arg (list_incrementer
, int);
4037 rfd
= va_arg (list_incrementer
, int);
4038 va_end (list_incrementer
);
4041 /* Use information from the related file descriptor to set record
4042 format of the newly created file. */
4043 fstat (rfd
, &st_buf
);
4044 switch (st_buf
.st_fab_rfm
)
4047 strcpy (rfm
, "rfm = fix");
4048 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4049 strcpy (rat
, "rat = ");
4050 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4052 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4053 strcat (rat
, "ftn");
4054 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4055 strcat (rat
, "prn");
4056 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4057 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4058 strcat (rat
, ", blk");
4060 strcat (rat
, "blk");
4061 return creat (name
, 0, rfm
, rat
, mrs
);
4064 strcpy (rfm
, "rfm = vfc");
4065 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4066 strcpy (rat
, "rat = ");
4067 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4069 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4070 strcat (rat
, "ftn");
4071 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4072 strcat (rat
, "prn");
4073 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4074 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4075 strcat (rat
, ", blk");
4077 strcat (rat
, "blk");
4078 return creat (name
, 0, rfm
, rat
, fsz
);
4081 strcpy (rfm
, "rfm = stm");
4085 strcpy (rfm
, "rfm = stmcr");
4089 strcpy (rfm
, "rfm = stmlf");
4093 strcpy (rfm
, "rfm = udf");
4097 strcpy (rfm
, "rfm = var");
4100 strcpy (rat
, "rat = ");
4101 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4103 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4104 strcat (rat
, "ftn");
4105 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4106 strcat (rat
, "prn");
4107 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4108 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4109 strcat (rat
, ", blk");
4111 strcat (rat
, "blk");
4115 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4116 strcpy (rat
, "rat=cr");
4118 /* Until the VAX C RTL fixes the many bugs with modes, always use
4119 mode 0 to get the user's default protection. */
4120 fd
= creat (name
, 0, rfm
, rat
);
4121 if (fd
< 0 && errno
== EEXIST
)
4123 if (unlink (name
) < 0)
4124 report_file_error ("delete", build_string (name
));
4125 fd
= creat (name
, 0, rfm
, rat
);
4131 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4132 sys_fwrite (ptr
, size
, num
, fp
)
4133 register char * ptr
;
4136 register int tot
= num
* size
;
4143 * The VMS C library routine creat actually creates a new version of an
4144 * existing file rather than truncating the old version. There are times
4145 * when this is not the desired behavior, for instance, when writing an
4146 * auto save file (you only want one version), or when you don't have
4147 * write permission in the directory containing the file (but the file
4148 * itself is writable). Hence this routine, which is equivalent to
4149 * "close (creat (fn, 0));" on Unix if fn already exists.
4155 struct FAB xfab
= cc$rms_fab
;
4156 struct RAB xrab
= cc$rms_rab
;
4159 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4160 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4161 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4162 xfab
.fab$l_fna
= fn
;
4163 xfab
.fab$b_fns
= strlen (fn
);
4164 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4166 xrab
.rab$l_fab
= &xfab
;
4168 /* This gibberish opens the file, positions to the first record, and
4169 deletes all records from there until the end of file. */
4170 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4172 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4173 (SYS$
FIND (&xrab
) & 01) == 01 &&
4174 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4185 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4186 SYSPRV or a readable SYSUAF.DAT. */
4192 * Routine to read the VMS User Authorization File and return
4193 * a specific user's record.
4196 static struct UAF retuaf
;
4199 get_uaf_name (uname
)
4206 uaf_fab
= cc$rms_fab
;
4207 uaf_rab
= cc$rms_rab
;
4208 /* initialize fab fields */
4209 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4210 uaf_fab
.fab$b_fns
= 21;
4211 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4212 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4213 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4214 /* initialize rab fields */
4215 uaf_rab
.rab$l_fab
= &uaf_fab
;
4216 /* open the User Authorization File */
4217 status
= SYS$
OPEN (&uaf_fab
);
4221 vaxc$errno
= status
;
4224 status
= SYS$
CONNECT (&uaf_rab
);
4228 vaxc$errno
= status
;
4231 /* read the requested record - index is in uname */
4232 uaf_rab
.rab$l_kbf
= uname
;
4233 uaf_rab
.rab$b_ksz
= strlen (uname
);
4234 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4235 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4236 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4237 status
= SYS$
GET (&uaf_rab
);
4241 vaxc$errno
= status
;
4244 /* close the User Authorization File */
4245 status
= SYS$
DISCONNECT (&uaf_rab
);
4249 vaxc$errno
= status
;
4252 status
= SYS$
CLOSE (&uaf_fab
);
4256 vaxc$errno
= status
;
4270 uaf_fab
= cc$rms_fab
;
4271 uaf_rab
= cc$rms_rab
;
4272 /* initialize fab fields */
4273 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4274 uaf_fab
.fab$b_fns
= 21;
4275 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4276 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4277 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4278 /* initialize rab fields */
4279 uaf_rab
.rab$l_fab
= &uaf_fab
;
4280 /* open the User Authorization File */
4281 status
= SYS$
OPEN (&uaf_fab
);
4285 vaxc$errno
= status
;
4288 status
= SYS$
CONNECT (&uaf_rab
);
4292 vaxc$errno
= status
;
4295 /* read the requested record - index is in uic */
4296 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4297 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4298 uaf_rab
.rab$b_ksz
= sizeof uic
;
4299 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4300 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4301 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4302 status
= SYS$
GET (&uaf_rab
);
4306 vaxc$errno
= status
;
4309 /* close the User Authorization File */
4310 status
= SYS$
DISCONNECT (&uaf_rab
);
4314 vaxc$errno
= status
;
4317 status
= SYS$
CLOSE (&uaf_fab
);
4321 vaxc$errno
= status
;
4327 static struct passwd retpw
;
4335 /* copy these out first because if the username is 32 chars, the next
4336 section will overwrite the first byte of the UIC */
4337 retpw
.pw_uid
= up
->uaf$w_mem
;
4338 retpw
.pw_gid
= up
->uaf$w_grp
;
4340 /* I suppose this is not the best sytle, to possibly overwrite one
4341 byte beyond the end of the field, but what the heck... */
4342 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4343 while (ptr
[-1] == ' ')
4346 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4348 /* the rest of these are counted ascii strings */
4349 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4350 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4351 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4352 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4353 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4354 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4355 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4356 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4360 #else /* not READ_SYSUAF */
4361 static struct passwd retpw
;
4362 #endif /* not READ_SYSUAF */
4373 unsigned char * full
;
4374 #endif /* READ_SYSUAF */
4379 if ('a' <= *ptr
&& *ptr
<= 'z')
4384 if (!(up
= get_uaf_name (name
)))
4386 return cnv_uaf_pw (up
);
4388 if (strcmp (name
, getenv ("USER")) == 0)
4390 retpw
.pw_uid
= getuid ();
4391 retpw
.pw_gid
= getgid ();
4392 strcpy (retpw
.pw_name
, name
);
4393 if (full
= egetenv ("FULLNAME"))
4394 strcpy (retpw
.pw_gecos
, full
);
4396 *retpw
.pw_gecos
= '\0';
4397 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4398 *retpw
.pw_shell
= '\0';
4403 #endif /* not READ_SYSUAF */
4413 if (!(up
= get_uaf_uic (uid
)))
4415 return cnv_uaf_pw (up
);
4417 if (uid
== sys_getuid ())
4418 return getpwnam (egetenv ("USER"));
4421 #endif /* not READ_SYSUAF */
4424 /* return total address space available to the current process. This is
4425 the sum of the current p0 size, p1 size and free page table entries
4430 unsigned long free_pages
;
4431 unsigned long frep0va
;
4432 unsigned long frep1va
;
4435 item_code
= JPI$_FREPTECNT
;
4436 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4439 vaxc$errno
= status
;
4444 item_code
= JPI$_FREP0VA
;
4445 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4448 vaxc$errno
= status
;
4451 item_code
= JPI$_FREP1VA
;
4452 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4455 vaxc$errno
= status
;
4459 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4462 define_logical_name (varname
, string
)
4466 struct dsc$descriptor_s strdsc
=
4467 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4468 struct dsc$descriptor_s envdsc
=
4469 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4470 struct dsc$descriptor_s lnmdsc
=
4471 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4473 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4476 delete_logical_name (varname
)
4479 struct dsc$descriptor_s envdsc
=
4480 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4481 struct dsc$descriptor_s lnmdsc
=
4482 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4484 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4495 error ("execvp system call not implemented");
4503 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4504 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4505 char from_esn
[NAM$C_MAXRSS
];
4506 char to_esn
[NAM$C_MAXRSS
];
4508 from_fab
.fab$l_fna
= from
;
4509 from_fab
.fab$b_fns
= strlen (from
);
4510 from_fab
.fab$l_nam
= &from_nam
;
4511 from_fab
.fab$l_fop
= FAB$M_NAM
;
4513 from_nam
.nam$l_esa
= from_esn
;
4514 from_nam
.nam$b_ess
= sizeof from_esn
;
4516 to_fab
.fab$l_fna
= to
;
4517 to_fab
.fab$b_fns
= strlen (to
);
4518 to_fab
.fab$l_nam
= &to_nam
;
4519 to_fab
.fab$l_fop
= FAB$M_NAM
;
4521 to_nam
.nam$l_esa
= to_esn
;
4522 to_nam
.nam$b_ess
= sizeof to_esn
;
4524 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4530 if (status
== RMS$_DEV
)
4534 vaxc$errno
= status
;
4539 /* This function renames a file like `rename', but it strips
4540 the version number from the "to" filename, such that the "to" file is
4541 will always be a new version. It also sets the file protection once it is
4542 finished. The protection that we will use is stored in fab_final_pro,
4543 and was set when we did a creat_copy_attrs to create the file that we
4546 We could use the chmod function, but Eunichs uses 3 bits per user category
4547 to describe the protection, and VMS uses 4 (write and delete are separate
4548 bits). To maintain portability, the VMS implementation of `chmod' wires
4549 the W and D bits together. */
4552 static struct fibdef fib
; /* We need this initialized to zero */
4553 char vms_file_written
[NAM$C_MAXRSS
];
4556 rename_sans_version (from
,to
)
4563 struct FAB to_fab
= cc$rms_fab
;
4564 struct NAM to_nam
= cc$rms_nam
;
4565 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4566 struct dsc$descriptor fib_attr
[2]
4567 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4568 char to_esn
[NAM$C_MAXRSS
];
4570 $
DESCRIPTOR (disk
,to_esn
);
4572 to_fab
.fab$l_fna
= to
;
4573 to_fab
.fab$b_fns
= strlen (to
);
4574 to_fab
.fab$l_nam
= &to_nam
;
4575 to_fab
.fab$l_fop
= FAB$M_NAM
;
4577 to_nam
.nam$l_esa
= to_esn
;
4578 to_nam
.nam$b_ess
= sizeof to_esn
;
4580 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4582 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4583 *(to_nam
.nam$l_ver
) = '\0';
4585 stat
= rename (from
, to_esn
);
4589 strcpy (vms_file_written
, to_esn
);
4591 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4592 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4594 /* Now set the file protection to the correct value */
4595 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4597 /* Copy these fields into the fib */
4598 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4599 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4600 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4602 SYS$
CLOSE (&to_fab
, 0, 0);
4604 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4607 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4608 0, 0, 0, &fib_attr
, 0);
4611 stat
= SYS$
DASSGN (chan
);
4614 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4624 unsigned short fid
[3];
4625 char esa
[NAM$C_MAXRSS
];
4628 fab
.fab$l_fop
= FAB$M_OFP
;
4629 fab
.fab$l_fna
= file
;
4630 fab
.fab$b_fns
= strlen (file
);
4631 fab
.fab$l_nam
= &nam
;
4634 nam
.nam$l_esa
= esa
;
4635 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4637 status
= SYS$
PARSE (&fab
);
4638 if ((status
& 1) == 0)
4641 vaxc$errno
= status
;
4644 status
= SYS$
SEARCH (&fab
);
4645 if ((status
& 1) == 0)
4648 vaxc$errno
= status
;
4652 fid
[0] = nam
.nam$w_fid
[0];
4653 fid
[1] = nam
.nam$w_fid
[1];
4654 fid
[2] = nam
.nam$w_fid
[2];
4656 fab
.fab$l_fna
= new;
4657 fab
.fab$b_fns
= strlen (new);
4659 status
= SYS$
PARSE (&fab
);
4660 if ((status
& 1) == 0)
4663 vaxc$errno
= status
;
4667 nam
.nam$w_fid
[0] = fid
[0];
4668 nam
.nam$w_fid
[1] = fid
[1];
4669 nam
.nam$w_fid
[2] = fid
[2];
4671 nam
.nam$l_esa
= nam
.nam$l_name
;
4672 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4674 status
= SYS$
ENTER (&fab
);
4675 if ((status
& 1) == 0)
4678 vaxc$errno
= status
;
4688 printf ("%s not yet implemented\r\n", badfunc
);
4696 /* Arrange to return a range centered on zero. */
4697 return rand () - (1 << 30);
4708 /* Called from init_sys_modes. */
4713 /* If we're not on an HFT we shouldn't do any of this. We determine
4714 if we are on an HFT by trying to get an HFT error code. If this
4715 call fails, we're not on an HFT. */
4717 if (ioctl (0, HFQERROR
, &junk
) < 0)
4719 #else /* not IBMR2AIX */
4720 if (ioctl (0, HFQEIO
, 0) < 0)
4722 #endif /* not IBMR2AIX */
4724 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4725 as the rubout key's ASCII code. Here this is changed. The bug is that
4726 there's no way to determine the old mapping, so in reset_sys_modes
4727 we need to assume that the normal map had been present. Of course, this
4728 code also doesn't help if on a terminal emulator which doesn't understand
4732 struct hfkeymap keymap
;
4734 buf
.hf_bufp
= (char *)&keymap
;
4735 buf
.hf_buflen
= sizeof (keymap
);
4736 keymap
.hf_nkeys
= 2;
4737 keymap
.hfkey
[0].hf_kpos
= 15;
4738 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4740 keymap
.hfkey
[0].hf_keyidh
= '<';
4741 #else /* not IBMR2AIX */
4742 keymap
.hfkey
[0].hf_page
= '<';
4743 #endif /* not IBMR2AIX */
4744 keymap
.hfkey
[0].hf_char
= 127;
4745 keymap
.hfkey
[1].hf_kpos
= 15;
4746 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4748 keymap
.hfkey
[1].hf_keyidh
= '<';
4749 #else /* not IBMR2AIX */
4750 keymap
.hfkey
[1].hf_page
= '<';
4751 #endif /* not IBMR2AIX */
4752 keymap
.hfkey
[1].hf_char
= 127;
4753 hftctl (0, HFSKBD
, &buf
);
4755 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
4757 line_ins_del_ok
= char_ins_del_ok
= 0;
4760 /* Reset the rubout key to backspace. */
4765 struct hfkeymap keymap
;
4769 if (ioctl (0, HFQERROR
, &junk
) < 0)
4771 #else /* not IBMR2AIX */
4772 if (ioctl (0, HFQEIO
, 0) < 0)
4774 #endif /* not IBMR2AIX */
4776 buf
.hf_bufp
= (char *)&keymap
;
4777 buf
.hf_buflen
= sizeof (keymap
);
4778 keymap
.hf_nkeys
= 2;
4779 keymap
.hfkey
[0].hf_kpos
= 15;
4780 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4782 keymap
.hfkey
[0].hf_keyidh
= '<';
4783 #else /* not IBMR2AIX */
4784 keymap
.hfkey
[0].hf_page
= '<';
4785 #endif /* not IBMR2AIX */
4786 keymap
.hfkey
[0].hf_char
= 8;
4787 keymap
.hfkey
[1].hf_kpos
= 15;
4788 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4790 keymap
.hfkey
[1].hf_keyidh
= '<';
4791 #else /* not IBMR2AIX */
4792 keymap
.hfkey
[1].hf_page
= '<';
4793 #endif /* not IBMR2AIX */
4794 keymap
.hfkey
[1].hf_char
= 8;
4795 hftctl (0, HFSKBD
, &buf
);