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 */
1483 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1485 #endif /* F_SETFL */
1487 if (interrupt_input
)
1491 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1494 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1503 widen_foreground_group ();
1509 /* Set up the proper status flags for use of a pty. */
1514 /* I'm told that TOICREMOTE does not mean control chars
1515 "can't be sent" but rather that they don't have
1516 input-editing or signaling effects.
1517 That should be good, because we have other ways
1518 to do those things in Emacs.
1519 However, telnet mode seems not to work on 4.2.
1520 So TIOCREMOTE is turned off now. */
1522 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1523 will hang. In particular, the "timeout" feature (which
1524 causes a read to return if there is no data available)
1525 does this. Also it is known that telnet mode will hang
1526 in such a way that Emacs must be stopped (perhaps this
1527 is the same problem).
1529 If TIOCREMOTE is turned off, then there is a bug in
1530 hp-ux which sometimes loses data. Apparently the
1531 code which blocks the master process when the internal
1532 buffer fills up does not work. Other than this,
1533 though, everything else seems to work fine.
1535 Since the latter lossage is more benign, we may as well
1536 lose that way. -- cph */
1541 ioctl (fd
, FIONBIO
, &on
);
1546 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1547 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1548 /* cause EMACS not to die when it should, i.e., when its own controlling */
1549 /* tty goes away. I've complained to the AIX developers, and they may */
1550 /* change this behavior, but I'm not going to hold my breath. */
1551 signal (SIGHUP
, SIG_IGN
);
1554 #endif /* HAVE_PTYS */
1558 /* Assigning an input channel is done at the start of Emacs execution.
1559 This is called each time Emacs is resumed, also, but does nothing
1560 because input_chain is no longer zero. */
1568 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1574 /* Deassigning the input channel is done before exiting. */
1578 return SYS$
DASSGN (input_fd
);
1583 /* Request reading one character into the keyboard buffer.
1584 This is done as soon as the buffer becomes empty. */
1589 extern kbd_input_ast ();
1591 waiting_for_ast
= 0;
1593 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1594 &input_iosb
, kbd_input_ast
, 1,
1595 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1600 /* Ast routine that is called when keyboard input comes in
1601 in accord with the SYS$QIO above. */
1605 register int c
= -1;
1606 int old_errno
= errno
;
1607 extern EMACS_TIME
*input_available_clear_time
;
1609 if (waiting_for_ast
)
1610 SYS$
SETEF (input_ef
);
1611 waiting_for_ast
= 0;
1614 if (input_count
== 25)
1616 printf ("Ast # %d,", input_count
);
1617 printf (" iosb = %x, %x, %x, %x",
1618 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1621 if (input_iosb
.offset
)
1625 printf (", char = 0%o", c
);
1637 struct input_event e
;
1638 e
.kind
= ascii_keystroke
;
1639 XSET (e
.code
, Lisp_Int
, c
);
1641 XSET(e
.frame_or_window
, Lisp_Frame
, selected_frame
);
1643 e
.frame_or_window
= Qnil
;
1645 kbd_buffer_store_event (&e
);
1647 if (input_available_clear_time
)
1648 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1652 /* Wait until there is something in kbd_buffer. */
1654 wait_for_kbd_input ()
1656 extern int have_process_input
, process_exited
;
1658 /* If already something, avoid doing system calls. */
1659 if (detect_input_pending ())
1663 /* Clear a flag, and tell ast routine above to set it. */
1664 SYS$
CLREF (input_ef
);
1665 waiting_for_ast
= 1;
1666 /* Check for timing error: ast happened while we were doing that. */
1667 if (!detect_input_pending ())
1669 /* No timing error: wait for flag to be set. */
1670 set_waiting_for_input (0);
1671 SYS$
WFLOR (input_ef
, input_eflist
);
1672 clear_waiting_for_input (0);
1673 if (!detect_input_pending ())
1674 /* Check for subprocess input availability */
1676 int dsp
= have_process_input
|| process_exited
;
1678 SYS$
CLREF (process_ef
);
1679 if (have_process_input
)
1680 process_command_input ();
1685 update_mode_lines
++;
1686 prepare_menu_bars ();
1687 redisplay_preserve_echo_area ();
1691 waiting_for_ast
= 0;
1694 /* Get rid of any pending QIO, when we are about to suspend
1695 or when we want to throw away pending input.
1696 We wait for a positive sign that the AST routine has run
1697 and therefore there is no I/O request queued when we return.
1698 SYS$SETAST is used to avoid a timing error. */
1703 printf ("At end_kbd_input.\n");
1707 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1709 SYS$
CANCEL (input_fd
);
1714 /* Clear a flag, and tell ast routine above to set it. */
1715 SYS$
CLREF (input_ef
);
1716 waiting_for_ast
= 1;
1718 SYS$
CANCEL (input_fd
);
1720 SYS$
WAITFR (input_ef
);
1721 waiting_for_ast
= 0;
1724 /* Wait for either input available or time interval expiry. */
1726 input_wait_timeout (timeval
)
1727 int timeval
; /* Time to wait, in seconds */
1730 static int zero
= 0;
1731 static int large
= -10000000;
1733 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1735 /* If already something, avoid doing system calls. */
1736 if (detect_input_pending ())
1740 /* Clear a flag, and tell ast routine above to set it. */
1741 SYS$
CLREF (input_ef
);
1742 waiting_for_ast
= 1;
1743 /* Check for timing error: ast happened while we were doing that. */
1744 if (!detect_input_pending ())
1746 /* No timing error: wait for flag to be set. */
1748 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1749 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1751 waiting_for_ast
= 0;
1754 /* The standard `sleep' routine works some other way
1755 and it stops working if you have ever quit out of it.
1756 This one continues to work. */
1762 static int zero
= 0;
1763 static int large
= -10000000;
1765 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1768 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1769 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
1784 croak ("request sigio");
1789 croak ("unrequest sigio");
1794 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
1799 #ifndef SYSTEM_MALLOC
1806 /* Some systems that cannot dump also cannot implement these. */
1809 * Return the address of the start of the text segment prior to
1810 * doing an unexec. After unexec the return value is undefined.
1811 * See crt0.c for further explanation and _start.
1815 #if !defined (CANNOT_UNEXEC) && !defined (HAVE_TEXT_START)
1820 return ((char *) TEXT_START
);
1824 return ((char *) csrt
);
1825 #else /* not GOULD */
1826 extern int _start ();
1827 return ((char *) _start
);
1829 #endif /* TEXT_START */
1831 #endif /* not CANNOT_UNEXEC and not HAVE_TEXT_START */
1834 * Return the address of the start of the data segment prior to
1835 * doing an unexec. After unexec the return value is undefined.
1836 * See crt0.c for further information and definition of data_start.
1838 * Apparently, on BSD systems this is etext at startup. On
1839 * USG systems (swapping) this is highly mmu dependent and
1840 * is also dependent on whether or not the program is running
1841 * with shared text. Generally there is a (possibly large)
1842 * gap between end of text and start of data with shared text.
1844 * On Uniplus+ systems with shared text, data starts at a
1845 * fixed address. Each port (from a given oem) is generally
1846 * different, and the specific value of the start of data can
1847 * be obtained via the UniPlus+ specific "uvar" system call,
1848 * however the method outlined in crt0.c seems to be more portable.
1850 * Probably what will have to happen when a USG unexec is available,
1851 * at least on UniPlus, is temacs will have to be made unshared so
1852 * that text and data are contiguous. Then once loadup is complete,
1853 * unexec will produce a shared executable where the data can be
1854 * at the normal shared text boundry and the startofdata variable
1855 * will be patched by unexec to the correct value.
1863 return ((char *) DATA_START
);
1865 #ifdef ORDINARY_LINK
1867 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
1868 * data_start isn't defined. We take the address of environ, which
1869 * is known to live at or near the start of the system crt0.c, and
1870 * we don't sweat the handful of bytes that might lose.
1872 extern char **environ
;
1874 return((char *) &environ
);
1876 extern int data_start
;
1877 return ((char *) &data_start
);
1878 #endif /* ORDINARY_LINK */
1879 #endif /* DATA_START */
1881 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
1884 /* Some systems that cannot dump also cannot implement these. */
1887 * Return the address of the end of the text segment prior to
1888 * doing an unexec. After unexec the return value is undefined.
1895 return ((char *) TEXT_END
);
1898 return ((char *) &etext
);
1903 * Return the address of the end of the data segment prior to
1904 * doing an unexec. After unexec the return value is undefined.
1911 return ((char *) DATA_END
);
1914 return ((char *) &edata
);
1918 #endif /* not CANNOT_DUMP */
1920 /* get_system_name returns as its value
1921 a string for the Lisp function system-name to return. */
1927 /* Can't have this within the function since `static' is #defined to
1928 nothing for some USG systems. */
1929 static char *get_system_name_cache
;
1930 static int get_system_name_predump_p
;
1935 #include <sys/socket.h>
1937 #endif /* HAVE_SOCKETS */
1938 #endif /* not VMS */
1939 #endif /* not BSD4_1 */
1948 /* If the cached value is from before the dump, and we've dumped
1949 since then, then the cached value is no good. */
1950 if (get_system_name_predump_p
&& initialized
&& get_system_name_cache
)
1952 xfree (get_system_name_cache
);
1953 get_system_name_cache
= 0;
1956 if (!get_system_name_cache
)
1958 /* No cached value, so get the name from the system. */
1961 if ((sp
= egetenv ("SYS$NODE")) == 0)
1967 if ((end
= index (sp
, ':')) != 0)
1970 get_system_name_cache
= (char *) xmalloc (strlen (sp
) + 1);
1971 strcpy (get_system_name_cache
, sp
);
1973 #ifndef HAVE_GETHOSTNAME
1976 get_system_name_cache
= (char *) xmalloc (strlen (uts
.nodename
) + 1);
1977 strcpy (get_system_name_cache
, uts
.nodename
);
1978 #else /* HAVE_GETHOSTNAME */
1980 int hostname_size
= 256;
1981 char *hostname
= (char *) xmalloc (hostname_size
);
1983 /* Try to get the host name; if the buffer is too short, try
1984 again. Apparently, the only indication gethostname gives of
1985 whether the buffer was large enough is the presence or absence
1986 of a '\0' in the string. Eech. */
1989 gethostname (hostname
, hostname_size
- 1);
1990 hostname
[hostname_size
- 1] = '\0';
1992 /* Was the buffer large enough for the '\0'? */
1993 if (strlen (hostname
) < hostname_size
- 1)
1996 hostname_size
<<= 1;
1997 hostname
= (char *) xrealloc (hostname
, hostname_size
);
1999 get_system_name_cache
= hostname
;
2001 /* Turn the hostname into the official, fully-qualified hostname.
2002 Don't do this if we're going to dump; this can confuse system
2003 libraries on some machines and make the dumped emacs core dump. */
2006 #endif /* not CANNOT_DUMP */
2008 struct hostent
*hp
= gethostbyname (hostname
);
2011 char *fqdn
= hp
->h_name
;
2012 if (!index (fqdn
, '.'))
2014 /* We still don't have a fully qualified domain name.
2015 Try to find one in the list of alternate names */
2016 char **alias
= hp
->h_aliases
;
2017 while (*alias
&& !index (*alias
, '.'))
2022 hostname
= (char *) xrealloc (hostname
, strlen (fqdn
) + 1);
2023 strcpy (hostname
, fqdn
);
2026 #endif /* HAVE_SOCKETS */
2027 get_system_name_cache
= hostname
;
2029 #endif /* HAVE_GETHOSTNAME */
2032 get_system_name_predump_p
= !initialized
;
2035 return (get_system_name_cache
);
2042 #ifdef HAVE_X_WINDOWS
2043 /* Cause explanatory error message at compile time,
2044 since the select emulation is not good enough for X. */
2045 int *x
= &x_windows_lose_if_no_select_system_call
;
2048 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2049 * Only checks read descriptors.
2051 /* How long to wait between checking fds in select */
2052 #define SELECT_PAUSE 1
2055 /* For longjmp'ing back to read_input_waiting. */
2057 jmp_buf read_alarm_throw
;
2059 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2060 The read_socket_hook function sets this to 1 while it is waiting. */
2062 int read_alarm_should_throw
;
2070 #else /* not BSD4_1 */
2071 signal (SIGALRM
, SIG_IGN
);
2072 #endif /* not BSD4_1 */
2073 if (read_alarm_should_throw
)
2074 longjmp (read_alarm_throw
, 1);
2077 /* Only rfds are checked. */
2079 select (nfds
, rfds
, wfds
, efds
, timeout
)
2081 int *rfds
, *wfds
, *efds
, *timeout
;
2083 int ravail
= 0, orfds
= 0, old_alarm
;
2084 int timeoutval
= timeout
? *timeout
: 100000;
2085 int *local_timeout
= &timeoutval
;
2086 extern int proc_buffered_char
[];
2087 #ifndef subprocesses
2088 int process_tick
= 0, update_tick
= 0;
2090 extern int process_tick
, update_tick
;
2092 SIGTYPE (*old_trap
) ();
2105 /* If we are looking only for the terminal, with no timeout,
2106 just read it and wait -- that's more efficient. */
2107 if (orfds
== 1 && *local_timeout
== 100000 && process_tick
== update_tick
)
2109 if (! detect_input_pending ())
2110 read_input_waiting ();
2115 /* Once a second, till the timer expires, check all the flagged read
2116 * descriptors to see if any input is available. If there is some then
2117 * set the corresponding bit in the return copy of rfds.
2121 register int to_check
, bit
, fd
;
2125 for (to_check
= nfds
, bit
= 1, fd
= 0; --to_check
>= 0; bit
<<= 1, fd
++)
2129 int avail
= 0, status
= 0;
2132 avail
= detect_input_pending (); /* Special keyboard handler */
2136 status
= ioctl (fd
, FIONREAD
, &avail
);
2137 #else /* no FIONREAD */
2139 abort (); /* I don't think we need it. */
2140 #else /* not MSDOS */
2141 /* Hoping it will return -1 if nothing available
2142 or 0 if all 0 chars requested are read. */
2143 if (proc_buffered_char
[fd
] >= 0)
2147 avail
= read (fd
, &buf
, 1);
2149 proc_buffered_char
[fd
] = buf
;
2151 #endif /* not MSDOS */
2152 #endif /* no FIONREAD */
2154 if (status
>= 0 && avail
> 0)
2162 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2164 old_alarm
= alarm (0);
2165 old_trap
= signal (SIGALRM
, select_alarm
);
2167 alarm (SELECT_PAUSE
);
2168 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2169 while (select_alarmed
== 0 && *local_timeout
!= 0
2170 && process_tick
== update_tick
)
2173 sleep_or_kbd_hit (SELECT_PAUSE
, (orfds
& 1) != 0);
2175 #else /* not MSDOS */
2176 /* If we are interested in terminal input,
2177 wait by reading the terminal.
2178 That makes instant wakeup for terminal input at least. */
2181 read_input_waiting ();
2182 if (detect_input_pending ())
2187 #endif /* not MSDOS */
2189 (*local_timeout
) -= SELECT_PAUSE
;
2190 /* Reset the old alarm if there was one */
2192 signal (SIGALRM
, old_trap
);
2195 /* Reset or forge an interrupt for the original handler. */
2196 old_alarm
-= SELECT_PAUSE
;
2198 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2202 if (*local_timeout
== 0) /* Stop on timer being cleared */
2208 /* Read keyboard input into the standard buffer,
2209 waiting for at least one character. */
2211 /* Make all keyboard buffers much bigger when using X windows. */
2212 #ifdef HAVE_X_WINDOWS
2213 #define BUFFER_SIZE_FACTOR 16
2215 #define BUFFER_SIZE_FACTOR 1
2218 read_input_waiting ()
2220 struct input_event e
;
2222 extern int quit_char
;
2224 if (read_socket_hook
)
2226 struct input_event buf
[256];
2228 read_alarm_should_throw
= 0;
2229 if (! setjmp (read_alarm_throw
))
2230 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2234 /* Scan the chars for C-g and store them in kbd_buffer. */
2235 for (i
= 0; i
< nread
; i
++)
2237 kbd_buffer_store_event (&buf
[i
]);
2238 /* Don't look at input that follows a C-g too closely.
2239 This reduces lossage due to autorepeat on C-g. */
2240 if (buf
[i
].kind
== ascii_keystroke
2241 && XINT(buf
[i
].code
) == quit_char
)
2248 nread
= read (fileno (stdin
), buf
, 1);
2250 /* Scan the chars for C-g and store them in kbd_buffer. */
2251 e
.kind
= ascii_keystroke
;
2252 e
.frame_or_window
= selected_frame
;
2254 for (i
= 0; i
< nread
; i
++)
2256 /* Convert chars > 0177 to meta events if desired.
2257 We do this under the same conditions that read_avail_input does. */
2258 if (read_socket_hook
== 0)
2260 /* If the user says she has a meta key, then believe her. */
2261 if (meta_key
== 1 && (buf
[i
] & 0x80))
2262 e
.modifiers
= meta_modifier
;
2267 XSET (e
.code
, Lisp_Int
, buf
[i
]);
2268 kbd_buffer_store_event (&e
);
2269 /* Don't look at input that follows a C-g too closely.
2270 This reduces lossage due to autorepeat on C-g. */
2271 if (buf
[i
] == quit_char
)
2277 #endif /* not HAVE_SELECT */
2278 #endif /* not VMS */
2282 * Partially emulate 4.2 open call.
2283 * open is defined as this in 4.1.
2285 * - added by Michael Bloom @ Citicorp/TTI
2290 sys_open (path
, oflag
, mode
)
2294 if (oflag
& O_CREAT
)
2295 return creat (path
, mode
);
2297 return open (path
, oflag
);
2304 lmode
= LINTRUP
| lmode
;
2305 ioctl (0, TIOCLSET
, &lmode
);
2312 lmode
= ~LINTRUP
& lmode
;
2313 ioctl (0, TIOCLSET
, &lmode
);
2320 interrupts_deferred
= 0;
2327 interrupts_deferred
= 1;
2330 /* still inside #ifdef BSD4_1 */
2333 int sigheld
; /* Mask of held signals */
2338 sigheld
|= sigbit (signum
);
2345 sigheld
|= sigbit (signum
);
2351 sigheld
&= ~sigbit (signum
);
2355 sigfree () /* Free all held signals */
2358 for (i
= 0; i
< NSIG
; i
++)
2359 if (sigheld
& sigbit (i
))
2366 return 1 << (i
- 1);
2368 #endif /* subprocesses */
2371 /* POSIX signals support - DJB */
2372 /* Anyone with POSIX signals should have ANSI C declarations */
2374 #ifdef POSIX_SIGNALS
2376 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2377 static struct sigaction new_action
, old_action
;
2381 sigemptyset (&empty_mask
);
2382 sigfillset (&full_mask
);
2386 sys_signal (int signal_number
, signal_handler_t action
)
2389 /* This gets us restartable system calls for efficiency.
2390 The "else" code will works as well. */
2391 return (berk_signal (signal_number
, action
));
2393 sigemptyset (&new_action
.sa_mask
);
2394 new_action
.sa_handler
= action
;
2396 /* Emacs mostly works better with restartable system services. If this
2397 * flag exists, we probably want to turn it on here.
2399 new_action
.sa_flags
= SA_RESTART
;
2401 new_action
.sa_flags
= 0;
2403 sigaction (signal_number
, &new_action
, &old_action
);
2404 return (old_action
.sa_handler
);
2409 /* If we're compiling with GCC, we don't need this function, since it
2410 can be written as a macro. */
2412 sys_sigmask (int sig
)
2415 sigemptyset (&mask
);
2416 sigaddset (&mask
, sig
);
2422 sys_sigpause (sigset_t new_mask
)
2424 /* pause emulating berk sigpause... */
2425 sigsuspend (&new_mask
);
2429 /* I'd like to have these guys return pointers to the mask storage in here,
2430 but there'd be trouble if the code was saving multiple masks. I'll be
2431 safe and pass the structure. It normally won't be more than 2 bytes
2435 sys_sigblock (sigset_t new_mask
)
2438 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2443 sys_sigunblock (sigset_t new_mask
)
2446 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2451 sys_sigsetmask (sigset_t new_mask
)
2454 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2458 #endif /* POSIX_SIGNALS */
2467 register int length
;
2471 long max_str
= 65535;
2473 while (length
> max_str
) {
2474 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2479 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2481 while (length
-- > 0)
2483 #endif /* not VMS */
2486 #endif /* no bzero */
2489 /* Saying `void' requires a declaration, above, where bcopy is used
2490 and that declaration causes pain for systems where bcopy is a macro. */
2491 bcopy (b1
, b2
, length
)
2494 register int length
;
2497 long max_str
= 65535;
2499 while (length
> max_str
) {
2500 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
2506 (void) LIB$
MOVC3 (&length
, b1
, b2
);
2508 while (length
-- > 0)
2510 #endif /* not VMS */
2512 #endif /* no bcopy */
2516 bcmp (b1
, b2
, length
) /* This could be a macro! */
2519 register int length
;
2522 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
2523 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
2525 return STR$
COMPARE (&src1
, &src2
);
2527 while (length
-- > 0)
2532 #endif /* not VMS */
2534 #endif /* no bcmp */
2536 #endif /* not BSTRING */
2541 * The BSD random returns numbers in the range of
2542 * 0 to 2e31 - 1. The USG rand returns numbers in the
2543 * range of 0 to 2e15 - 1. This is probably not significant
2550 /* Arrange to return a range centered on zero. */
2551 return (rand () << 15) + rand () - (1 << 29);
2565 /* Arrange to return a range centered on zero. */
2566 return (rand () << 15) + rand () - (1 << 29);
2577 #ifdef WRONG_NAME_INSQUE
2590 /* If any place else asks for the TERM variable,
2591 allow it to be overridden with the EMACS_TERM variable
2592 before attempting to translate the logical name TERM. As a last
2593 resort, ask for VAX C's special idea of the TERM variable. */
2600 static char buf
[256];
2601 static struct dsc$descriptor_s equiv
2602 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2603 static struct dsc$descriptor_s d_name
2604 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2607 if (!strcmp (name
, "TERM"))
2609 val
= (char *) getenv ("EMACS_TERM");
2614 d_name
.dsc$w_length
= strlen (name
);
2615 d_name
.dsc$a_pointer
= name
;
2616 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2618 char *str
= (char *) xmalloc (eqlen
+ 1);
2619 bcopy (buf
, str
, eqlen
);
2621 /* This is a storage leak, but a pain to fix. With luck,
2622 no one will ever notice. */
2625 return (char *) getenv (name
);
2630 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2631 to force a call on the debugger from within the image. */
2636 LIB$
SIGNAL (SS$_DEBUG
);
2642 #ifdef LINK_CRTL_SHARE
2643 #ifdef SHAREABLE_LIB_BUG
2644 /* Variables declared noshare and initialized in sharable libraries
2645 cannot be shared. The VMS linker incorrectly forces you to use a private
2646 version which is uninitialized... If not for this "feature", we
2647 could use the C library definition of sys_nerr and sys_errlist. */
2649 char *sys_errlist
[] =
2653 "no such file or directory",
2655 "interrupted system call",
2657 "no such device or address",
2658 "argument list too long",
2659 "exec format error",
2662 "no more processes",
2663 "not enough memory",
2664 "permission denied",
2666 "block device required",
2667 "mount devices busy",
2669 "cross-device link",
2674 "file table overflow",
2675 "too many open files",
2679 "no space left on device",
2681 "read-only file system",
2687 "vax/vms specific error code nontranslatable error"
2689 #endif /* SHAREABLE_LIB_BUG */
2690 #endif /* LINK_CRTL_SHARE */
2693 #ifndef HAVE_STRERROR
2698 extern char *sys_errlist
[];
2699 extern int sys_nerr
;
2701 if (errnum
>= 0 && errnum
< sys_nerr
)
2702 return sys_errlist
[errnum
];
2703 return (char *) "Unknown error";
2706 #endif /* ! HAVE_STRERROR */
2708 #ifdef INTERRUPTIBLE_OPEN
2712 sys_open (path
, oflag
, mode
)
2716 register int rtnval
;
2718 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2719 && (errno
== EINTR
));
2723 #endif /* INTERRUPTIBLE_OPEN */
2725 #ifdef INTERRUPTIBLE_CLOSE
2730 register int rtnval
;
2732 while ((rtnval
= close (fd
)) == -1
2733 && (errno
== EINTR
));
2737 #endif /* INTERRUPTIBLE_CLOSE */
2739 #ifdef INTERRUPTIBLE_IO
2742 sys_read (fildes
, buf
, nbyte
)
2747 register int rtnval
;
2749 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2750 && (errno
== EINTR
));
2755 sys_write (fildes
, buf
, nbyte
)
2760 register int rtnval
, bytes_written
;
2766 rtnval
= write (fildes
, buf
, nbyte
);
2773 return (bytes_written
? bytes_written
: -1);
2778 bytes_written
+= rtnval
;
2780 return (bytes_written
);
2783 #endif /* INTERRUPTIBLE_IO */
2788 * Substitute fork for vfork on USG flavors.
2796 #endif /* not HAVE_VFORK */
2800 * All of the following are for USG.
2802 * On USG systems the system calls are INTERRUPTIBLE by signals
2803 * that the user program has elected to catch. Thus the system call
2804 * must be retried in these cases. To handle this without massive
2805 * changes in the source code, we remap the standard system call names
2806 * to names for our own functions in sysdep.c that do the system call
2807 * with retries. Actually, for portability reasons, it is good
2808 * programming practice, as this example shows, to limit all actual
2809 * system calls to a single occurrence in the source. Sure, this
2810 * adds an extra level of function call overhead but it is almost
2811 * always negligible. Fred Fish, Unisoft Systems Inc.
2814 #ifndef HAVE_SYS_SIGLIST
2815 char *sys_siglist
[NSIG
+ 1] =
2818 /* AIX has changed the signals a bit */
2819 "bogus signal", /* 0 */
2820 "hangup", /* 1 SIGHUP */
2821 "interrupt", /* 2 SIGINT */
2822 "quit", /* 3 SIGQUIT */
2823 "illegal instruction", /* 4 SIGILL */
2824 "trace trap", /* 5 SIGTRAP */
2825 "IOT instruction", /* 6 SIGIOT */
2826 "crash likely", /* 7 SIGDANGER */
2827 "floating point exception", /* 8 SIGFPE */
2828 "kill", /* 9 SIGKILL */
2829 "bus error", /* 10 SIGBUS */
2830 "segmentation violation", /* 11 SIGSEGV */
2831 "bad argument to system call", /* 12 SIGSYS */
2832 "write on a pipe with no one to read it", /* 13 SIGPIPE */
2833 "alarm clock", /* 14 SIGALRM */
2834 "software termination signum", /* 15 SIGTERM */
2835 "user defined signal 1", /* 16 SIGUSR1 */
2836 "user defined signal 2", /* 17 SIGUSR2 */
2837 "death of a child", /* 18 SIGCLD */
2838 "power-fail restart", /* 19 SIGPWR */
2839 "bogus signal", /* 20 */
2840 "bogus signal", /* 21 */
2841 "bogus signal", /* 22 */
2842 "bogus signal", /* 23 */
2843 "bogus signal", /* 24 */
2844 "LAN I/O interrupt", /* 25 SIGAIO */
2845 "PTY I/O interrupt", /* 26 SIGPTY */
2846 "I/O intervention required", /* 27 SIGIOINT */
2847 "HFT grant", /* 28 SIGGRANT */
2848 "HFT retract", /* 29 SIGRETRACT */
2849 "HFT sound done", /* 30 SIGSOUND */
2850 "HFT input ready", /* 31 SIGMSG */
2852 "bogus signal", /* 0 */
2853 "hangup", /* 1 SIGHUP */
2854 "interrupt", /* 2 SIGINT */
2855 "quit", /* 3 SIGQUIT */
2856 "illegal instruction", /* 4 SIGILL */
2857 "trace trap", /* 5 SIGTRAP */
2858 "IOT instruction", /* 6 SIGIOT */
2859 "EMT instruction", /* 7 SIGEMT */
2860 "floating point exception", /* 8 SIGFPE */
2861 "kill", /* 9 SIGKILL */
2862 "bus error", /* 10 SIGBUS */
2863 "segmentation violation", /* 11 SIGSEGV */
2864 "bad argument to system call", /* 12 SIGSYS */
2865 "write on a pipe with no one to read it", /* 13 SIGPIPE */
2866 "alarm clock", /* 14 SIGALRM */
2867 "software termination signum", /* 15 SIGTERM */
2868 "user defined signal 1", /* 16 SIGUSR1 */
2869 "user defined signal 2", /* 17 SIGUSR2 */
2870 "death of a child", /* 18 SIGCLD */
2871 "power-fail restart", /* 19 SIGPWR */
2873 "window size change", /* 20 SIGWINCH */
2874 "urgent socket condition", /* 21 SIGURG */
2875 "pollable event occured", /* 22 SIGPOLL */
2876 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
2877 "user stop requested from tty", /* 24 SIGTSTP */
2878 "stopped process has been continued", /* 25 SIGCONT */
2879 "background tty read attempted", /* 26 SIGTTIN */
2880 "background tty write attempted", /* 27 SIGTTOU */
2881 "virtual timer expired", /* 28 SIGVTALRM */
2882 "profiling timer expired", /* 29 SIGPROF */
2883 "exceeded cpu limit", /* 30 SIGXCPU */
2884 "exceeded file size limit", /* 31 SIGXFSZ */
2885 "process's lwps are blocked", /* 32 SIGWAITING */
2886 "special signal used by thread library", /* 33 SIGLWP */
2887 "Special Signal Used By CPR", /* 34 SIGFREEZE */
2888 "Special Signal Used By CPR", /* 35 SIGTHAW */
2890 #endif /* not AIX */
2893 #endif /* HAVE_SYS_SIGLIST */
2896 * Warning, this function may not duplicate 4.2 action properly
2897 * under error conditions.
2901 /* In 4.1, param.h fails to define this. */
2902 #define MAXPATHLEN 1024
2911 char *npath
, *spath
;
2912 extern char *getcwd ();
2914 BLOCK_INPUT
; /* getcwd uses malloc */
2915 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2918 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2919 up to first slash. Should be harmless on other systems. */
2920 while (*npath
&& *npath
!= '/')
2922 strcpy (pathname
, npath
);
2923 free (spath
); /* getcwd uses malloc */
2928 #endif /* HAVE_GETWD */
2931 * Emulate rename using unlink/link. Note that this is
2932 * only partially correct. Also, doesn't enforce restriction
2933 * that files be of same type (regular->regular, dir->dir, etc).
2942 if (access (from
, 0) == 0)
2945 if (link (from
, to
) == 0)
2946 if (unlink (from
) == 0)
2954 #ifdef MISSING_UTIMES
2956 /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */
2965 /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the
2966 utimbuf structure defined anywhere but in the man page. */
2976 struct timeval tvp
[];
2979 utb
.actime
= tvp
[0].tv_sec
;
2980 utb
.modtime
= tvp
[1].tv_sec
;
2983 #endif /* IRIS_UTIME */
2989 /* HPUX curses library references perror, but as far as we know
2990 it won't be called. Anyway this definition will do for now. */
2996 #endif /* not HAVE_PERROR */
3002 * Emulate BSD dup2. First close newd if it already exists.
3003 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3004 * until we are, then close the unsuccessful ones.
3011 register int fd
, ret
;
3016 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3018 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3025 ret
= dup2 (old
,new);
3031 #endif /* not HAVE_DUP2 */
3034 * Gettimeofday. Simulate as much as possible. Only accurate
3035 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3036 * Only needed when subprocesses are defined.
3041 #ifndef HAVE_GETTIMEOFDAY
3045 gettimeofday (tp
, tzp
)
3047 struct timezone
*tzp
;
3049 extern long time ();
3051 tp
->tv_sec
= time ((long *)0);
3054 tzp
->tz_minuteswest
= -1;
3060 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3063 * This function will go away as soon as all the stubs fixed. (fnf)
3069 printf ("%s not yet implemented\r\n", badfunc
);
3078 char *sys_siglist
[NSIG
+ 1] =
3080 "null signal", /* 0 SIGNULL */
3081 "hangup", /* 1 SIGHUP */
3082 "interrupt", /* 2 SIGINT */
3083 "quit", /* 3 SIGQUIT */
3084 "illegal instruction", /* 4 SIGILL */
3085 "trace trap", /* 5 SIGTRAP */
3086 "abort termination", /* 6 SIGABRT */
3087 "SIGEMT", /* 7 SIGEMT */
3088 "floating point exception", /* 8 SIGFPE */
3089 "kill", /* 9 SIGKILL */
3090 "bus error", /* 10 SIGBUS */
3091 "segmentation violation", /* 11 SIGSEGV */
3092 "bad argument to system call", /* 12 SIGSYS */
3093 "write on a pipe with no reader", /* 13 SIGPIPE */
3094 "alarm clock", /* 14 SIGALRM */
3095 "software termination signal", /* 15 SIGTERM */
3096 "user defined signal 1", /* 16 SIGUSR1 */
3097 "user defined signal 2", /* 17 SIGUSR2 */
3098 "child stopped or terminated", /* 18 SIGCLD */
3099 "power-fail restart", /* 19 SIGPWR */
3100 "window size changed", /* 20 SIGWINCH */
3101 "undefined", /* 21 */
3102 "pollable event occurred", /* 22 SIGPOLL */
3103 "sendable stop signal not from tty", /* 23 SIGSTOP */
3104 "stop signal from tty", /* 24 SIGSTP */
3105 "continue a stopped process", /* 25 SIGCONT */
3106 "attempted background tty read", /* 26 SIGTTIN */
3107 "attempted background tty write", /* 27 SIGTTOU */
3108 "undefined", /* 28 */
3109 "undefined", /* 29 */
3110 "undefined", /* 30 */
3111 "undefined", /* 31 */
3112 "undefined", /* 32 */
3113 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3114 "I/O is possible", /* 34 SIGIO */
3115 "exceeded cpu time limit", /* 35 SIGXCPU */
3116 "exceeded file size limit", /* 36 SIGXFSZ */
3117 "virtual time alarm", /* 37 SIGVTALRM */
3118 "profiling time alarm", /* 38 SIGPROF */
3119 "undefined", /* 39 */
3120 "file record locks revoked", /* 40 SIGLOST */
3121 "undefined", /* 41 */
3122 "undefined", /* 42 */
3123 "undefined", /* 43 */
3124 "undefined", /* 44 */
3125 "undefined", /* 45 */
3126 "undefined", /* 46 */
3127 "undefined", /* 47 */
3128 "undefined", /* 48 */
3129 "undefined", /* 49 */
3130 "undefined", /* 50 */
3131 "undefined", /* 51 */
3132 "undefined", /* 52 */
3133 "undefined", /* 53 */
3134 "undefined", /* 54 */
3135 "undefined", /* 55 */
3136 "undefined", /* 56 */
3137 "undefined", /* 57 */
3138 "undefined", /* 58 */
3139 "undefined", /* 59 */
3140 "undefined", /* 60 */
3141 "undefined", /* 61 */
3142 "undefined", /* 62 */
3143 "undefined", /* 63 */
3144 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3150 /* Directory routines for systems that don't have them. */
3152 #ifdef SYSV_SYSTEM_DIR
3156 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3160 register DIR *dirp
; /* stream from opendir */
3164 rtnval
= sys_close (dirp
->dd_fd
);
3166 /* Some systems (like Solaris) allocate the buffer and the DIR all
3167 in one block. Why in the world are we freeing this ourselves
3169 #if ! (defined (sun) && defined (USG5_4))
3170 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3172 xfree ((char *) dirp
);
3176 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3177 #endif /* SYSV_SYSTEM_DIR */
3179 #ifdef NONSYSTEM_DIR_LIBRARY
3183 char *filename
; /* name of directory */
3185 register DIR *dirp
; /* -> malloc'ed storage */
3186 register int fd
; /* file descriptor for read */
3187 struct stat sbuf
; /* result of fstat */
3189 fd
= sys_open (filename
, 0);
3194 if (fstat (fd
, &sbuf
) < 0
3195 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3196 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3200 return 0; /* bad luck today */
3205 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3212 register DIR *dirp
; /* stream from opendir */
3214 sys_close (dirp
->dd_fd
);
3215 xfree ((char *) dirp
);
3223 ino_t od_ino
; /* inode */
3224 char od_name
[DIRSIZ
]; /* filename */
3226 #endif /* not VMS */
3228 struct direct dir_static
; /* simulated directory contents */
3233 register DIR *dirp
; /* stream from opendir */
3236 register struct olddir
*dp
; /* -> directory data */
3238 register struct dir$_name
*dp
; /* -> directory data */
3239 register struct dir$_version
*dv
; /* -> version data */
3244 if (dirp
->dd_loc
>= dirp
->dd_size
)
3245 dirp
->dd_loc
= dirp
->dd_size
= 0;
3247 if (dirp
->dd_size
== 0 /* refill buffer */
3248 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3252 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3253 dirp
->dd_loc
+= sizeof (struct olddir
);
3255 if (dp
->od_ino
!= 0) /* not deleted entry */
3257 dir_static
.d_ino
= dp
->od_ino
;
3258 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3259 dir_static
.d_name
[DIRSIZ
] = '\0';
3260 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3261 dir_static
.d_reclen
= sizeof (struct direct
)
3263 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3264 return &dir_static
; /* -> simulated structure */
3267 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3268 if (dirp
->dd_loc
== 0)
3269 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3270 : dp
->dir$b_namecount
;
3271 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3272 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3273 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3274 dir_static
.d_reclen
= sizeof (struct direct
)
3276 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3277 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3278 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3279 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3286 /* readdirver is just like readdir except it returns all versions of a file
3287 as separate entries. */
3292 register DIR *dirp
; /* stream from opendir */
3294 register struct dir$_name
*dp
; /* -> directory data */
3295 register struct dir$_version
*dv
; /* -> version data */
3297 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3298 dirp
->dd_loc
= dirp
->dd_size
= 0;
3300 if (dirp
->dd_size
== 0 /* refill buffer */
3301 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3304 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3305 if (dirp
->dd_loc
== 0)
3306 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3307 : dp
->dir$b_namecount
;
3308 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3309 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3310 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3311 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3312 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3313 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3314 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3315 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3321 #endif /* NONSYSTEM_DIR_LIBRARY */
3324 /* mkdir and rmdir functions, for systems which don't have them. */
3328 * Written by Robert Rother, Mariah Corporation, August 1985.
3330 * If you want it, it's yours. All I ask in return is that if you
3331 * figure out how to do this in a Bourne Shell script you send me
3333 * sdcsvax!rmr or rmr@uscd
3335 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3336 * subroutine. 11Mar86; hoptoad!gnu
3338 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3339 * subroutine didn't return EEXIST. It does now.
3345 #ifdef MKDIR_PROTOTYPE
3349 mkdir (dpath
, dmode
)
3354 int cpid
, status
, fd
;
3355 struct stat statbuf
;
3357 if (stat (dpath
, &statbuf
) == 0)
3359 errno
= EEXIST
; /* Stat worked, so it already exists */
3363 /* If stat fails for a reason other than non-existence, return error */
3364 if (errno
!= ENOENT
)
3367 synch_process_alive
= 1;
3368 switch (cpid
= fork ())
3371 case -1: /* Error in fork */
3372 return (-1); /* Errno is set already */
3374 case 0: /* Child process */
3376 * Cheap hack to set mode of new directory. Since this
3377 * child process is going away anyway, we zap its umask.
3378 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3379 * directory. Does anybody care?
3381 status
= umask (0); /* Get current umask */
3382 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3383 fd
= sys_open("/dev/null", 2);
3390 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3391 _exit (-1); /* Can't exec /bin/mkdir */
3393 default: /* Parent process */
3394 wait_for_termination (cpid
);
3397 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3399 errno
= EIO
; /* We don't know why, but */
3400 return -1; /* /bin/mkdir failed */
3405 #endif /* not HAVE_MKDIR */
3412 int cpid
, status
, fd
;
3413 struct stat statbuf
;
3415 if (stat (dpath
, &statbuf
) != 0)
3417 /* Stat just set errno. We don't have to */
3421 synch_process_alive
= 1;
3422 switch (cpid
= fork ())
3425 case -1: /* Error in fork */
3426 return (-1); /* Errno is set already */
3428 case 0: /* Child process */
3429 fd
= sys_open("/dev/null", 2);
3436 wait_for_termination (cpid
);
3437 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3438 return -1; /* /bin/rmdir failed */
3439 default: /* Parent process */
3440 while (cpid
!= wait (&status
)); /* Wait for kid to finish */
3443 if (WIFSIGNALED (status
) || WEXITSTATUS (status
) != 0)
3445 errno
= EIO
; /* We don't know why, but */
3446 return -1; /* /bin/mkdir failed */
3451 #endif /* !HAVE_RMDIR */
3455 /* Functions for VMS */
3457 #include "vms-pwd.h"
3462 /* Return as a string the VMS error string pertaining to STATUS.
3463 Reuses the same static buffer each time it is called. */
3467 int status
; /* VMS status code */
3471 static char buf
[257];
3473 bufadr
[0] = sizeof buf
- 1;
3474 bufadr
[1] = (int) buf
;
3475 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3476 return "untranslatable VMS error status";
3484 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3485 * not work correctly. (It also doesn't work well in version 2.3.)
3490 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3491 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3495 unsigned short s_buflen
;
3496 unsigned short s_code
;
3498 unsigned short *s_retlenadr
;
3502 #define buflen s.s_buflen
3503 #define code s.s_code
3504 #define bufadr s.s_bufadr
3505 #define retlenadr s.s_retlenadr
3507 #define R_OK 4 /* test for read permission */
3508 #define W_OK 2 /* test for write permission */
3509 #define X_OK 1 /* test for execute (search) permission */
3510 #define F_OK 0 /* test for presence of file */
3513 sys_access (path
, mode
)
3517 static char *user
= NULL
;
3520 /* translate possible directory spec into .DIR file name, so brain-dead
3521 * access can treat the directory like a file. */
3522 if (directory_file_name (path
, dir_fn
))
3526 return access (path
, mode
);
3527 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3533 unsigned short int dummy
;
3535 static int constant
= ACL$C_FILE
;
3536 DESCRIPTOR (path_desc
, path
);
3537 DESCRIPTOR (user_desc
, user
);
3541 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3544 acces
|= CHP$M_READ
;
3546 acces
|= CHP$M_WRITE
;
3547 itemlst
[0].buflen
= sizeof (int);
3548 itemlst
[0].code
= CHP$_FLAGS
;
3549 itemlst
[0].bufadr
= (char *) &flags
;
3550 itemlst
[0].retlenadr
= &dummy
;
3551 itemlst
[1].buflen
= sizeof (int);
3552 itemlst
[1].code
= CHP$_ACCESS
;
3553 itemlst
[1].bufadr
= (char *) &acces
;
3554 itemlst
[1].retlenadr
= &dummy
;
3555 itemlst
[2].end
= CHP$_END
;
3556 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3557 return stat
== SS$_NORMAL
? 0 : -1;
3561 #else /* not VMS4_4 */
3564 #define ACE$M_WRITE 2
3565 #define ACE$C_KEYID 1
3567 static unsigned short memid
, grpid
;
3568 static unsigned int uic
;
3570 /* Called from init_sys_modes, so it happens not very often
3571 but at least each time Emacs is loaded. */
3572 sys_access_reinit ()
3578 sys_access (filename
, type
)
3584 int status
, size
, i
, typecode
, acl_controlled
;
3585 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3586 union prvdef prvmask
;
3588 /* Get UIC and GRP values for protection checking. */
3591 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3594 memid
= uic
& 0xFFFF;
3598 if (type
!= 2) /* not checking write access */
3599 return access (filename
, type
);
3601 /* Check write protection. */
3603 #define CHECKPRIV(bit) (prvmask.bit)
3604 #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3606 /* Find privilege bits */
3607 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3609 error ("Unable to find privileges: %s", vmserrstr (status
));
3610 if (CHECKPRIV (PRV$V_BYPASS
))
3611 return 0; /* BYPASS enabled */
3613 fab
.fab$b_fac
= FAB$M_GET
;
3614 fab
.fab$l_fna
= filename
;
3615 fab
.fab$b_fns
= strlen (filename
);
3616 fab
.fab$l_xab
= &xab
;
3617 xab
= cc$rms_xabpro
;
3618 xab
.xab$l_aclbuf
= aclbuf
;
3619 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3620 status
= SYS$
OPEN (&fab
, 0, 0);
3623 SYS$
CLOSE (&fab
, 0, 0);
3624 /* Check system access */
3625 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITEABLE (XAB$V_SYS
))
3627 /* Check ACL entries, if any */
3629 if (xab
.xab$w_acllen
> 0)
3632 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3633 while (*aclptr
&& aclptr
< aclend
)
3635 size
= (*aclptr
& 0xff) / 4;
3636 typecode
= (*aclptr
>> 8) & 0xff;
3637 if (typecode
== ACE$C_KEYID
)
3638 for (i
= size
- 1; i
> 1; i
--)
3639 if (aclptr
[i
] == uic
)
3642 if (aclptr
[1] & ACE$M_WRITE
)
3643 return 0; /* Write access through ACL */
3645 aclptr
= &aclptr
[size
];
3647 if (acl_controlled
) /* ACL specified, prohibits write access */
3650 /* No ACL entries specified, check normal protection */
3651 if (WRITEABLE (XAB$V_WLD
)) /* World writeable */
3653 if (WRITEABLE (XAB$V_GRP
) &&
3654 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3655 return 0; /* Group writeable */
3656 if (WRITEABLE (XAB$V_OWN
) &&
3657 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3658 return 0; /* Owner writeable */
3660 return -1; /* Not writeable */
3662 #endif /* not VMS4_4 */
3665 static char vtbuf
[NAM$C_MAXRSS
+1];
3667 /* translate a vms file spec to a unix path */
3669 sys_translate_vms (vfile
)
3680 /* leading device or logical name is a root directory */
3681 if (p
= strchr (vfile
, ':'))
3690 if (*p
== '[' || *p
== '<')
3692 while (*++vfile
!= *p
+ 2)
3696 if (vfile
[-1] == *p
)
3719 static char utbuf
[NAM$C_MAXRSS
+1];
3721 /* translate a unix path to a VMS file spec */
3723 sys_translate_unix (ufile
)
3746 if (index (&ufile
[1], '/'))
3753 if (index (&ufile
[1], '/'))
3760 if (strncmp (ufile
, "./", 2) == 0)
3767 ufile
++; /* skip the dot */
3768 if (index (&ufile
[1], '/'))
3773 else if (strncmp (ufile
, "../", 3) == 0)
3781 ufile
+= 2; /* skip the dots */
3782 if (index (&ufile
[1], '/'))
3807 extern char *getcwd ();
3809 #define MAXPATHLEN 1024
3811 ptr
= xmalloc (MAXPATHLEN
);
3812 val
= getcwd (ptr
, MAXPATHLEN
);
3818 strcpy (pathname
, ptr
);
3826 long item_code
= JPI$_OWNER
;
3827 unsigned long parent_id
;
3830 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
3833 vaxc$errno
= status
;
3843 return (getgid () << 16) | getuid ();
3847 sys_read (fildes
, buf
, nbyte
)
3852 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
3857 sys_write (fildes
, buf
, nbyte
)
3862 register int nwrote
, rtnval
= 0;
3864 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
3870 return rtnval
? rtnval
: -1;
3871 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
3872 return rtnval
? rtnval
: -1;
3873 return (rtnval
+ nwrote
);
3878 * VAX/VMS VAX C RTL really loses. It insists that records
3879 * end with a newline (carriage return) character, and if they
3880 * don't it adds one (nice of it isn't it!)
3882 * Thus we do this stupidity below.
3886 sys_write (fildes
, buf
, nbytes
)
3889 unsigned int nbytes
;
3896 fstat (fildes
, &st
);
3902 /* Handle fixed-length files with carriage control. */
3903 if (st
.st_fab_rfm
== FAB$C_FIX
3904 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
3906 len
= st
.st_fab_mrs
;
3907 retval
= write (fildes
, p
, min (len
, nbytes
));
3910 retval
++; /* This skips the implied carriage control */
3914 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
3915 while (*e
!= '\n' && e
> p
) e
--;
3916 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
3917 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
3919 retval
= write (fildes
, p
, len
);
3930 /* Create file NEW copying its attributes from file OLD. If
3931 OLD is 0 or does not exist, create based on the value of
3934 /* Protection value the file should ultimately have.
3935 Set by create_copy_attrs, and use by rename_sansversions. */
3936 static unsigned short int fab_final_pro
;
3939 creat_copy_attrs (old
, new)
3942 struct FAB fab
= cc$rms_fab
;
3943 struct XABPRO xabpro
;
3944 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
3945 extern int vms_stmlf_recfm
;
3949 fab
.fab$b_fac
= FAB$M_GET
;
3950 fab
.fab$l_fna
= old
;
3951 fab
.fab$b_fns
= strlen (old
);
3952 fab
.fab$l_xab
= (char *) &xabpro
;
3953 xabpro
= cc$rms_xabpro
;
3954 xabpro
.xab$l_aclbuf
= aclbuf
;
3955 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
3956 /* Call $OPEN to fill in the fab & xabpro fields. */
3957 if (SYS$
OPEN (&fab
, 0, 0) & 1)
3959 SYS$
CLOSE (&fab
, 0, 0);
3960 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
3961 if (xabpro
.xab$w_acllen
> 0)
3963 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
3964 /* If the acl buffer was too short, redo open with longer one.
3965 Wouldn't need to do this if there were some system imposed
3966 limit on the size of an ACL, but I can't find any such. */
3968 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
3969 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
3970 if (SYS$
OPEN (&fab
, 0, 0) & 1)
3971 SYS$
CLOSE (&fab
, 0, 0);
3977 xabpro
.xab$l_aclbuf
= 0;
3982 fab
.fab$l_fna
= new;
3983 fab
.fab$b_fns
= strlen (new);
3987 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
3988 fab
.fab$b_rat
= FAB$M_CR
;
3991 /* Set the file protections such that we will be able to manipulate
3992 this file. Once we are done writing and renaming it, we will set
3993 the protections back. */
3995 fab_final_pro
= xabpro
.xab$w_pro
;
3997 SYS$
SETDFPROT (0, &fab_final_pro
);
3998 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4000 /* Create the new file with either default attrs or attrs copied
4002 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4004 SYS$
CLOSE (&fab
, 0, 0);
4005 /* As this is a "replacement" for creat, return a file descriptor
4006 opened for writing. */
4007 return open (new, O_WRONLY
);
4012 #include <varargs.h>
4015 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4019 sys_creat (va_alist
)
4022 va_list list_incrementer
;
4025 int rfd
; /* related file descriptor */
4026 int fd
; /* Our new file descriptor */
4033 extern int vms_stmlf_recfm
;
4036 va_start (list_incrementer
);
4037 name
= va_arg (list_incrementer
, char *);
4038 mode
= va_arg (list_incrementer
, int);
4040 rfd
= va_arg (list_incrementer
, int);
4041 va_end (list_incrementer
);
4044 /* Use information from the related file descriptor to set record
4045 format of the newly created file. */
4046 fstat (rfd
, &st_buf
);
4047 switch (st_buf
.st_fab_rfm
)
4050 strcpy (rfm
, "rfm = fix");
4051 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4052 strcpy (rat
, "rat = ");
4053 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4055 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4056 strcat (rat
, "ftn");
4057 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4058 strcat (rat
, "prn");
4059 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4060 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4061 strcat (rat
, ", blk");
4063 strcat (rat
, "blk");
4064 return creat (name
, 0, rfm
, rat
, mrs
);
4067 strcpy (rfm
, "rfm = vfc");
4068 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4069 strcpy (rat
, "rat = ");
4070 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4072 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4073 strcat (rat
, "ftn");
4074 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4075 strcat (rat
, "prn");
4076 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4077 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4078 strcat (rat
, ", blk");
4080 strcat (rat
, "blk");
4081 return creat (name
, 0, rfm
, rat
, fsz
);
4084 strcpy (rfm
, "rfm = stm");
4088 strcpy (rfm
, "rfm = stmcr");
4092 strcpy (rfm
, "rfm = stmlf");
4096 strcpy (rfm
, "rfm = udf");
4100 strcpy (rfm
, "rfm = var");
4103 strcpy (rat
, "rat = ");
4104 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4106 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4107 strcat (rat
, "ftn");
4108 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4109 strcat (rat
, "prn");
4110 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4111 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4112 strcat (rat
, ", blk");
4114 strcat (rat
, "blk");
4118 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4119 strcpy (rat
, "rat=cr");
4121 /* Until the VAX C RTL fixes the many bugs with modes, always use
4122 mode 0 to get the user's default protection. */
4123 fd
= creat (name
, 0, rfm
, rat
);
4124 if (fd
< 0 && errno
== EEXIST
)
4126 if (unlink (name
) < 0)
4127 report_file_error ("delete", build_string (name
));
4128 fd
= creat (name
, 0, rfm
, rat
);
4134 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4135 sys_fwrite (ptr
, size
, num
, fp
)
4136 register char * ptr
;
4139 register int tot
= num
* size
;
4146 * The VMS C library routine creat actually creates a new version of an
4147 * existing file rather than truncating the old version. There are times
4148 * when this is not the desired behavior, for instance, when writing an
4149 * auto save file (you only want one version), or when you don't have
4150 * write permission in the directory containing the file (but the file
4151 * itself is writable). Hence this routine, which is equivalent to
4152 * "close (creat (fn, 0));" on Unix if fn already exists.
4158 struct FAB xfab
= cc$rms_fab
;
4159 struct RAB xrab
= cc$rms_rab
;
4162 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4163 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4164 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4165 xfab
.fab$l_fna
= fn
;
4166 xfab
.fab$b_fns
= strlen (fn
);
4167 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4169 xrab
.rab$l_fab
= &xfab
;
4171 /* This gibberish opens the file, positions to the first record, and
4172 deletes all records from there until the end of file. */
4173 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4175 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4176 (SYS$
FIND (&xrab
) & 01) == 01 &&
4177 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4188 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4189 SYSPRV or a readable SYSUAF.DAT. */
4195 * Routine to read the VMS User Authorization File and return
4196 * a specific user's record.
4199 static struct UAF retuaf
;
4202 get_uaf_name (uname
)
4209 uaf_fab
= cc$rms_fab
;
4210 uaf_rab
= cc$rms_rab
;
4211 /* initialize fab fields */
4212 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4213 uaf_fab
.fab$b_fns
= 21;
4214 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4215 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4216 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4217 /* initialize rab fields */
4218 uaf_rab
.rab$l_fab
= &uaf_fab
;
4219 /* open the User Authorization File */
4220 status
= SYS$
OPEN (&uaf_fab
);
4224 vaxc$errno
= status
;
4227 status
= SYS$
CONNECT (&uaf_rab
);
4231 vaxc$errno
= status
;
4234 /* read the requested record - index is in uname */
4235 uaf_rab
.rab$l_kbf
= uname
;
4236 uaf_rab
.rab$b_ksz
= strlen (uname
);
4237 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4238 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4239 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4240 status
= SYS$
GET (&uaf_rab
);
4244 vaxc$errno
= status
;
4247 /* close the User Authorization File */
4248 status
= SYS$
DISCONNECT (&uaf_rab
);
4252 vaxc$errno
= status
;
4255 status
= SYS$
CLOSE (&uaf_fab
);
4259 vaxc$errno
= status
;
4273 uaf_fab
= cc$rms_fab
;
4274 uaf_rab
= cc$rms_rab
;
4275 /* initialize fab fields */
4276 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4277 uaf_fab
.fab$b_fns
= 21;
4278 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4279 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4280 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4281 /* initialize rab fields */
4282 uaf_rab
.rab$l_fab
= &uaf_fab
;
4283 /* open the User Authorization File */
4284 status
= SYS$
OPEN (&uaf_fab
);
4288 vaxc$errno
= status
;
4291 status
= SYS$
CONNECT (&uaf_rab
);
4295 vaxc$errno
= status
;
4298 /* read the requested record - index is in uic */
4299 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4300 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4301 uaf_rab
.rab$b_ksz
= sizeof uic
;
4302 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4303 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4304 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4305 status
= SYS$
GET (&uaf_rab
);
4309 vaxc$errno
= status
;
4312 /* close the User Authorization File */
4313 status
= SYS$
DISCONNECT (&uaf_rab
);
4317 vaxc$errno
= status
;
4320 status
= SYS$
CLOSE (&uaf_fab
);
4324 vaxc$errno
= status
;
4330 static struct passwd retpw
;
4338 /* copy these out first because if the username is 32 chars, the next
4339 section will overwrite the first byte of the UIC */
4340 retpw
.pw_uid
= up
->uaf$w_mem
;
4341 retpw
.pw_gid
= up
->uaf$w_grp
;
4343 /* I suppose this is not the best sytle, to possibly overwrite one
4344 byte beyond the end of the field, but what the heck... */
4345 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4346 while (ptr
[-1] == ' ')
4349 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4351 /* the rest of these are counted ascii strings */
4352 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4353 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4354 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4355 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4356 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4357 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4358 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4359 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4363 #else /* not READ_SYSUAF */
4364 static struct passwd retpw
;
4365 #endif /* not READ_SYSUAF */
4376 unsigned char * full
;
4377 #endif /* READ_SYSUAF */
4382 if ('a' <= *ptr
&& *ptr
<= 'z')
4387 if (!(up
= get_uaf_name (name
)))
4389 return cnv_uaf_pw (up
);
4391 if (strcmp (name
, getenv ("USER")) == 0)
4393 retpw
.pw_uid
= getuid ();
4394 retpw
.pw_gid
= getgid ();
4395 strcpy (retpw
.pw_name
, name
);
4396 if (full
= egetenv ("FULLNAME"))
4397 strcpy (retpw
.pw_gecos
, full
);
4399 *retpw
.pw_gecos
= '\0';
4400 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4401 *retpw
.pw_shell
= '\0';
4406 #endif /* not READ_SYSUAF */
4416 if (!(up
= get_uaf_uic (uid
)))
4418 return cnv_uaf_pw (up
);
4420 if (uid
== sys_getuid ())
4421 return getpwnam (egetenv ("USER"));
4424 #endif /* not READ_SYSUAF */
4427 /* return total address space available to the current process. This is
4428 the sum of the current p0 size, p1 size and free page table entries
4433 unsigned long free_pages
;
4434 unsigned long frep0va
;
4435 unsigned long frep1va
;
4438 item_code
= JPI$_FREPTECNT
;
4439 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4442 vaxc$errno
= status
;
4447 item_code
= JPI$_FREP0VA
;
4448 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4451 vaxc$errno
= status
;
4454 item_code
= JPI$_FREP1VA
;
4455 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4458 vaxc$errno
= status
;
4462 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4465 define_logical_name (varname
, string
)
4469 struct dsc$descriptor_s strdsc
=
4470 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4471 struct dsc$descriptor_s envdsc
=
4472 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4473 struct dsc$descriptor_s lnmdsc
=
4474 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4476 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4479 delete_logical_name (varname
)
4482 struct dsc$descriptor_s envdsc
=
4483 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4484 struct dsc$descriptor_s lnmdsc
=
4485 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4487 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4498 error ("execvp system call not implemented");
4506 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4507 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4508 char from_esn
[NAM$C_MAXRSS
];
4509 char to_esn
[NAM$C_MAXRSS
];
4511 from_fab
.fab$l_fna
= from
;
4512 from_fab
.fab$b_fns
= strlen (from
);
4513 from_fab
.fab$l_nam
= &from_nam
;
4514 from_fab
.fab$l_fop
= FAB$M_NAM
;
4516 from_nam
.nam$l_esa
= from_esn
;
4517 from_nam
.nam$b_ess
= sizeof from_esn
;
4519 to_fab
.fab$l_fna
= to
;
4520 to_fab
.fab$b_fns
= strlen (to
);
4521 to_fab
.fab$l_nam
= &to_nam
;
4522 to_fab
.fab$l_fop
= FAB$M_NAM
;
4524 to_nam
.nam$l_esa
= to_esn
;
4525 to_nam
.nam$b_ess
= sizeof to_esn
;
4527 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4533 if (status
== RMS$_DEV
)
4537 vaxc$errno
= status
;
4542 /* This function renames a file like `rename', but it strips
4543 the version number from the "to" filename, such that the "to" file is
4544 will always be a new version. It also sets the file protection once it is
4545 finished. The protection that we will use is stored in fab_final_pro,
4546 and was set when we did a creat_copy_attrs to create the file that we
4549 We could use the chmod function, but Eunichs uses 3 bits per user category
4550 to describe the protection, and VMS uses 4 (write and delete are separate
4551 bits). To maintain portability, the VMS implementation of `chmod' wires
4552 the W and D bits together. */
4555 static struct fibdef fib
; /* We need this initialized to zero */
4556 char vms_file_written
[NAM$C_MAXRSS
];
4559 rename_sans_version (from
,to
)
4566 struct FAB to_fab
= cc$rms_fab
;
4567 struct NAM to_nam
= cc$rms_nam
;
4568 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4569 struct dsc$descriptor fib_attr
[2]
4570 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4571 char to_esn
[NAM$C_MAXRSS
];
4573 $
DESCRIPTOR (disk
,to_esn
);
4575 to_fab
.fab$l_fna
= to
;
4576 to_fab
.fab$b_fns
= strlen (to
);
4577 to_fab
.fab$l_nam
= &to_nam
;
4578 to_fab
.fab$l_fop
= FAB$M_NAM
;
4580 to_nam
.nam$l_esa
= to_esn
;
4581 to_nam
.nam$b_ess
= sizeof to_esn
;
4583 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4585 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4586 *(to_nam
.nam$l_ver
) = '\0';
4588 stat
= rename (from
, to_esn
);
4592 strcpy (vms_file_written
, to_esn
);
4594 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4595 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4597 /* Now set the file protection to the correct value */
4598 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4600 /* Copy these fields into the fib */
4601 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4602 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4603 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4605 SYS$
CLOSE (&to_fab
, 0, 0);
4607 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4610 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4611 0, 0, 0, &fib_attr
, 0);
4614 stat
= SYS$
DASSGN (chan
);
4617 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4627 unsigned short fid
[3];
4628 char esa
[NAM$C_MAXRSS
];
4631 fab
.fab$l_fop
= FAB$M_OFP
;
4632 fab
.fab$l_fna
= file
;
4633 fab
.fab$b_fns
= strlen (file
);
4634 fab
.fab$l_nam
= &nam
;
4637 nam
.nam$l_esa
= esa
;
4638 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4640 status
= SYS$
PARSE (&fab
);
4641 if ((status
& 1) == 0)
4644 vaxc$errno
= status
;
4647 status
= SYS$
SEARCH (&fab
);
4648 if ((status
& 1) == 0)
4651 vaxc$errno
= status
;
4655 fid
[0] = nam
.nam$w_fid
[0];
4656 fid
[1] = nam
.nam$w_fid
[1];
4657 fid
[2] = nam
.nam$w_fid
[2];
4659 fab
.fab$l_fna
= new;
4660 fab
.fab$b_fns
= strlen (new);
4662 status
= SYS$
PARSE (&fab
);
4663 if ((status
& 1) == 0)
4666 vaxc$errno
= status
;
4670 nam
.nam$w_fid
[0] = fid
[0];
4671 nam
.nam$w_fid
[1] = fid
[1];
4672 nam
.nam$w_fid
[2] = fid
[2];
4674 nam
.nam$l_esa
= nam
.nam$l_name
;
4675 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4677 status
= SYS$
ENTER (&fab
);
4678 if ((status
& 1) == 0)
4681 vaxc$errno
= status
;
4691 printf ("%s not yet implemented\r\n", badfunc
);
4699 /* Arrange to return a range centered on zero. */
4700 return rand () - (1 << 30);
4711 /* Called from init_sys_modes. */
4716 /* If we're not on an HFT we shouldn't do any of this. We determine
4717 if we are on an HFT by trying to get an HFT error code. If this
4718 call fails, we're not on an HFT. */
4720 if (ioctl (0, HFQERROR
, &junk
) < 0)
4722 #else /* not IBMR2AIX */
4723 if (ioctl (0, HFQEIO
, 0) < 0)
4725 #endif /* not IBMR2AIX */
4727 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4728 as the rubout key's ASCII code. Here this is changed. The bug is that
4729 there's no way to determine the old mapping, so in reset_sys_modes
4730 we need to assume that the normal map had been present. Of course, this
4731 code also doesn't help if on a terminal emulator which doesn't understand
4735 struct hfkeymap keymap
;
4737 buf
.hf_bufp
= (char *)&keymap
;
4738 buf
.hf_buflen
= sizeof (keymap
);
4739 keymap
.hf_nkeys
= 2;
4740 keymap
.hfkey
[0].hf_kpos
= 15;
4741 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4743 keymap
.hfkey
[0].hf_keyidh
= '<';
4744 #else /* not IBMR2AIX */
4745 keymap
.hfkey
[0].hf_page
= '<';
4746 #endif /* not IBMR2AIX */
4747 keymap
.hfkey
[0].hf_char
= 127;
4748 keymap
.hfkey
[1].hf_kpos
= 15;
4749 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4751 keymap
.hfkey
[1].hf_keyidh
= '<';
4752 #else /* not IBMR2AIX */
4753 keymap
.hfkey
[1].hf_page
= '<';
4754 #endif /* not IBMR2AIX */
4755 keymap
.hfkey
[1].hf_char
= 127;
4756 hftctl (0, HFSKBD
, &buf
);
4758 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
4760 line_ins_del_ok
= char_ins_del_ok
= 0;
4763 /* Reset the rubout key to backspace. */
4768 struct hfkeymap keymap
;
4772 if (ioctl (0, HFQERROR
, &junk
) < 0)
4774 #else /* not IBMR2AIX */
4775 if (ioctl (0, HFQEIO
, 0) < 0)
4777 #endif /* not IBMR2AIX */
4779 buf
.hf_bufp
= (char *)&keymap
;
4780 buf
.hf_buflen
= sizeof (keymap
);
4781 keymap
.hf_nkeys
= 2;
4782 keymap
.hfkey
[0].hf_kpos
= 15;
4783 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4785 keymap
.hfkey
[0].hf_keyidh
= '<';
4786 #else /* not IBMR2AIX */
4787 keymap
.hfkey
[0].hf_page
= '<';
4788 #endif /* not IBMR2AIX */
4789 keymap
.hfkey
[0].hf_char
= 8;
4790 keymap
.hfkey
[1].hf_kpos
= 15;
4791 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4793 keymap
.hfkey
[1].hf_keyidh
= '<';
4794 #else /* not IBMR2AIX */
4795 keymap
.hfkey
[1].hf_page
= '<';
4796 #endif /* not IBMR2AIX */
4797 keymap
.hfkey
[1].hf_char
= 8;
4798 hftctl (0, HFSKBD
, &buf
);