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 */
467 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
468 /* No output delays */
469 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
470 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
471 s
.main
.c_iflag
&= ~IUCLC
; /* Disable map of upper case to lower on
473 s
.main
.c_oflag
&= ~OLCUC
; /* Disable map of lower case to upper on
475 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
477 /* Said to be unnecessary: */
478 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
479 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
482 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
483 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
484 s
.main
.c_cc
[VERASE
] = 0377; /* disable erase processing */
485 s
.main
.c_cc
[VKILL
] = 0377; /* disable kill processing */
488 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
492 /* AIX enhanced edit loses NULs, so disable it */
495 s
.main
.c_iflag
&= ~ASCEDIT
;
497 /* Also, PTY overloads NUL and BREAK.
498 don't ignore break, but don't signal either, so it looks like NUL. */
499 s
.main
.c_iflag
&= ~IGNBRK
;
500 s
.main
.c_iflag
&= ~BRKINT
;
501 /* QUIT and INTR work better as signals, so disable character forms */
502 s
.main
.c_cc
[VINTR
] = 0377;
503 #ifdef SIGNALS_VIA_CHARACTERS
504 /* the QUIT and INTR character are used in process_send_signal
505 so set them here to something useful. */
506 if (s
.main
.c_cc
[VQUIT
] == 0377)
507 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
508 if (s
.main
.c_cc
[VINTR
] == 0377)
509 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
510 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
511 /* QUIT and INTR work better as signals, so disable character forms */
512 s
.main
.c_cc
[VQUIT
] = 0377;
513 s
.main
.c_cc
[VINTR
] = 0377;
514 s
.main
.c_lflag
&= ~ISIG
;
515 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
516 s
.main
.c_cc
[VEOL
] = 0377;
517 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
520 #else /* not HAVE_TERMIO */
522 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
524 s
.main
.sg_flags
|= LPASS8
;
525 s
.main
.sg_erase
= 0377;
526 s
.main
.sg_kill
= 0377;
527 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
529 #endif /* not HAVE_TERMIO */
531 EMACS_SET_TTY (out
, &s
, 0);
540 ioctl (out
, FIOASYNC
, &zero
);
543 #endif /* not MSDOS */
547 #endif /* subprocesses */
553 EMACS_SET_TTY_PGRP (input_fd
, &pid
);
556 /* Record a signal code and the handler for it. */
560 SIGTYPE (*handler
) ();
563 /* Suspend the Emacs process; give terminal to its superior. */
567 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
569 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
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
630 struct save_signal saved_handlers
[5];
632 saved_handlers
[0].code
= SIGINT
;
633 saved_handlers
[1].code
= SIGQUIT
;
634 saved_handlers
[2].code
= SIGTERM
;
636 saved_handlers
[3].code
= SIGIO
;
637 saved_handlers
[4].code
= 0;
639 saved_handlers
[3].code
= 0;
643 error ("Can't spawn subshell");
648 #ifdef MSDOS /* MW, Aug 1993 */
651 sh
= (char *) egetenv ("SHELL");
655 /* Use our buffer's default directory for the subshell. */
661 /* mentioning current_buffer->buffer would mean including buffer.h,
662 which somehow wedges the hp compiler. So instead... */
664 dir
= intern ("default-directory");
666 if (XFASTINT (Fboundp (dir
)) == XFASTINT (Qnil
))
668 dir
= Fsymbol_value (dir
);
669 if (XTYPE (dir
) != Lisp_String
)
672 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
673 len
= XSTRING (dir
)->size
;
674 bcopy (XSTRING (dir
)->data
, str
, len
);
675 if (str
[len
- 1] != '/') str
[len
++] = '/';
681 close_process_descs (); /* Close Emacs's pipes/ptys */
686 extern int emacs_priority
;
689 nice (-emacs_priority
);
693 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
697 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
698 #else /* not MSDOS */
700 write (1, "Can't execute subshell", 22);
702 #endif /* not MSDOS */
705 save_signal_handlers (saved_handlers
);
706 synch_process_alive
= 1;
707 wait_for_termination (pid
);
708 restore_signal_handlers (saved_handlers
);
710 #endif /* no USG_JOBCTRL */
711 #endif /* no SIGTSTP */
715 save_signal_handlers (saved_handlers
)
716 struct save_signal
*saved_handlers
;
718 while (saved_handlers
->code
)
720 saved_handlers
->handler
721 = (SIGTYPE (*) ()) signal (saved_handlers
->code
, SIG_IGN
);
726 restore_signal_handlers (saved_handlers
)
727 struct save_signal
*saved_handlers
;
729 while (saved_handlers
->code
)
731 signal (saved_handlers
->code
, saved_handlers
->handler
);
743 old_fcntl_flags
= fcntl (input_fd
, F_GETFL
, 0) & ~FASYNC
;
753 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
758 sigunblock (sigmask (SIGWINCH
));
760 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
762 interrupts_deferred
= 0;
768 sigblock (sigmask (SIGWINCH
));
770 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
771 interrupts_deferred
= 1;
774 #else /* no FASYNC */
775 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
780 ioctl (input_fd
, FIOASYNC
, &on
);
781 interrupts_deferred
= 0;
788 ioctl (input_fd
, FIOASYNC
, &off
);
789 interrupts_deferred
= 1;
792 #else /* not FASYNC, not STRIDE */
804 sigaddset(&st
, SIGIO
);
805 ioctl (input_fd
, FIOASYNC
, &on
);
806 interrupts_deferred
= 0;
807 sigprocmask(SIG_UNBLOCK
, &st
, (sigset_t
*)0);
814 ioctl (input_fd
, FIOASYNC
, &off
);
815 interrupts_deferred
= 1;
822 croak ("request_sigio");
827 croak ("unrequest_sigio");
835 /* Saving and restoring the process group of Emacs's terminal. */
839 /* The process group of which Emacs was a member when it initially
842 If Emacs was in its own process group (i.e. inherited_pgroup ==
843 getpid ()), then we know we're running under a shell with job
844 control (Emacs would never be run as part of a pipeline).
847 If Emacs was not in its own process group, then we know we're
848 running under a shell (or a caller) that doesn't know how to
849 separate itself from Emacs (like sh). Emacs must be in its own
850 process group in order to receive SIGIO correctly. In this
851 situation, we put ourselves in our own pgroup, forcibly set the
852 tty's pgroup to our pgroup, and make sure to restore and reinstate
853 the tty's pgroup just like any other terminal setting. If
854 inherited_group was not the tty's pgroup, then we'll get a
855 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
856 it goes foreground in the future, which is what should happen. */
857 int inherited_pgroup
;
859 /* Split off the foreground process group to Emacs alone.
860 When we are in the foreground, but not started in our own process
861 group, redirect the TTY to point to our own process group. We need
862 to be in our own process group to receive SIGIO properly. */
863 narrow_foreground_group ()
867 setpgrp (0, inherited_pgroup
);
868 if (inherited_pgroup
!= me
)
869 EMACS_SET_TTY_PGRP (input_fd
, &me
);
873 /* Set the tty to our original foreground group. */
874 widen_foreground_group ()
876 if (inherited_pgroup
!= getpid ())
877 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
878 setpgrp (0, inherited_pgroup
);
883 /* Getting and setting emacs_tty structures. */
885 /* Set *TC to the parameters associated with the terminal FD.
886 Return zero if all's well, or -1 if we ran into an error we
887 couldn't deal with. */
889 emacs_get_tty (fd
, settings
)
891 struct emacs_tty
*settings
;
893 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
895 /* We have those nifty POSIX tcmumbleattr functions. */
896 if (tcgetattr (fd
, &settings
->main
) < 0)
901 /* The SYSV-style interface? */
902 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
907 /* Vehemently Monstrous System? :-) */
908 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
909 &settings
->main
.class, 12, 0, 0, 0, 0)
915 /* I give up - I hope you have the BSD ioctls. */
916 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
918 #endif /* not MSDOS */
923 /* Suivant - Do we have to get struct ltchars data? */
925 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
929 /* How about a struct tchars and a wordful of lmode bits? */
931 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
932 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
936 /* We have survived the tempest. */
941 /* Set the parameters of the tty on FD according to the contents of
942 *SETTINGS. If WAITP is non-zero, we wait for all queued output to
943 be written before making the change; otherwise, we forget any
944 queued input and make the change immediately.
945 Return 0 if all went well, and -1 if anything failed. */
947 emacs_set_tty (fd
, settings
, waitp
)
949 struct emacs_tty
*settings
;
952 /* Set the primary parameters - baud rate, character size, etcetera. */
955 /* We have those nifty POSIX tcmumbleattr functions.
956 William J. Smith <wjs@wiis.wang.com> writes:
957 "POSIX 1003.1 defines tcsetattr() to return success if it was
958 able to perform any of the requested actions, even if some
959 of the requested actions could not be performed.
960 We must read settings back to ensure tty setup properly.
961 AIX requires this to keep tty from hanging occasionally." */
962 /* This make sure that we don't loop indefinitely in here. */
963 for (i
= 0 ; i
< 10 ; i
++)
964 if (tcsetattr (fd
, waitp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
975 /* Get the current settings, and see if they're what we asked for. */
976 tcgetattr (fd
, &new);
977 /* We cannot use memcmp on the whole structure here because under
978 * aix386 the termios structure has some reserved field that may
981 if ( new.c_iflag
== settings
->main
.c_iflag
982 && new.c_oflag
== settings
->main
.c_oflag
983 && new.c_cflag
== settings
->main
.c_cflag
984 && new.c_lflag
== settings
->main
.c_lflag
985 && memcmp(new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
993 /* The SYSV-style interface? */
994 if (ioctl (fd
, waitp
? TCSETAW
: TCSETAF
, &settings
->main
) < 0)
999 /* Vehemently Monstrous System? :-) */
1000 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1001 &settings
->main
.class, 12, 0, 0, 0, 0)
1007 /* I give up - I hope you have the BSD ioctls. */
1008 if (ioctl (fd
, (waitp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1010 #endif /* not MSDOS */
1016 /* Suivant - Do we have to get struct ltchars data? */
1018 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1022 /* How about a struct tchars and a wordful of lmode bits? */
1024 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1025 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1029 /* We have survived the tempest. */
1034 /* The initial tty mode bits */
1035 struct emacs_tty old_tty
;
1037 int term_initted
; /* 1 if outer tty status has been recorded */
1040 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1045 #ifndef F_SETOWN_BUG
1047 int old_fcntl_owner
;
1048 #endif /* F_SETOWN */
1049 #endif /* F_SETOWN_BUG */
1051 /* This may also be defined in stdio,
1052 but if so, this does no harm,
1053 and using the same name avoids wasting the other one's space. */
1055 #if defined (USG) || defined (DGUX)
1056 unsigned char _sobuf
[BUFSIZ
+8];
1058 char _sobuf
[BUFSIZ
];
1062 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1065 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1070 struct emacs_tty tty
;
1074 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1075 extern int (*interrupt_signal
) ();
1084 input_ef
= get_kbd_event_flag ();
1085 /* LIB$GET_EF (&input_ef); */
1086 SYS$
CLREF (input_ef
);
1087 waiting_for_ast
= 0;
1089 timer_ef
= get_timer_event_flag ();
1090 /* LIB$GET_EF (&timer_ef); */
1091 SYS$
CLREF (timer_ef
);
1095 LIB$
GET_EF (&process_ef
);
1096 SYS$
CLREF (process_ef
);
1098 if (input_ef
/ 32 != process_ef
/ 32)
1099 croak ("Input and process event flags in different clusters.");
1101 if (input_ef
/ 32 != timer_ef
/ 32)
1102 croak ("Input and timer event flags in different clusters.");
1104 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1105 ((unsigned) 1 << (process_ef
% 32));
1107 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1108 ((unsigned) 1 << (timer_ef
% 32));
1110 sys_access_reinit ();
1112 #endif /* not VMS */
1115 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1116 narrow_foreground_group ();
1119 EMACS_GET_TTY (input_fd
, &old_tty
);
1121 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1125 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1126 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1127 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1129 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1131 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1132 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1134 tty
.main
.c_iflag
&= ~IEXTEN
; /* Disable other editing characters. */
1136 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1139 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1141 tty
.main
.c_iflag
&= ~IXANY
;
1145 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1146 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1148 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1152 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1153 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1156 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1157 /* Set up C-g for both SIGQUIT and SIGINT.
1158 We don't know which we will get, but we handle both alike
1159 so which one it really gives us does not matter. */
1160 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1161 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1162 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1164 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1167 #if defined (mips) || defined (HAVE_TCATTR)
1169 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1172 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1173 #endif /* V_DSUSP */
1174 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1175 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1178 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1181 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1182 #endif /* VREPRINT */
1184 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1185 #endif /* VWERASE */
1187 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1188 #endif /* VDISCARD */
1189 #endif /* mips or HAVE_TCATTR */
1192 /* AIX enhanced edit loses NULs, so disable it */
1193 tty
.main
.c_line
= 0;
1194 tty
.main
.c_iflag
&= ~ASCEDIT
;
1196 tty
.main
.c_cc
[VSTRT
] = 255;
1197 tty
.main
.c_cc
[VSTOP
] = 255;
1198 tty
.main
.c_cc
[VSUSP
] = 255;
1199 tty
.main
.c_cc
[VDSUSP
] = 255;
1200 #endif /* IBMR2AIX */
1201 /* Also, PTY overloads NUL and BREAK.
1202 don't ignore break, but don't signal either, so it looks like NUL.
1203 This really serves a purpose only if running in an XTERM window
1204 or via TELNET or the like, but does no harm elsewhere. */
1205 tty
.main
.c_iflag
&= ~IGNBRK
;
1206 tty
.main
.c_iflag
&= ~BRKINT
;
1208 #else /* if not HAVE_TERMIO */
1210 tty
.main
.tt_char
|= TT$M_NOECHO
;
1212 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1214 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1216 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1217 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1218 #else /* not VMS (BSD, that is) */
1220 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1222 tty
.main
.sg_flags
|= ANYP
;
1223 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1225 #endif /* not VMS (BSD, that is) */
1226 #endif /* not HAVE_TERMIO */
1228 /* If going to use CBREAK mode, we must request C-g to interrupt
1229 and turn off start and stop chars, etc. If not going to use
1230 CBREAK mode, do this anyway so as to turn off local flow
1231 control for user coming over network on 4.2; in this case,
1232 only t_stopc and t_startc really matter. */
1235 /* Note: if not using CBREAK mode, it makes no difference how we
1237 tty
.tchars
= new_tchars
;
1238 tty
.tchars
.t_intrc
= quit_char
;
1241 tty
.tchars
.t_startc
= '\021';
1242 tty
.tchars
.t_stopc
= '\023';
1245 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1247 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1248 anything, and leaving it in breaks the meta key. Go figure. */
1249 tty
.lmode
&= ~LLITOUT
;
1256 #endif /* HAVE_TCHARS */
1257 #endif /* not HAVE_TERMIO */
1260 tty
.ltchars
= new_ltchars
;
1261 #endif /* HAVE_LTCHARS */
1262 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1263 internal_terminal_init ();
1267 EMACS_SET_TTY (input_fd
, &tty
, 0);
1269 /* This code added to insure that, if flow-control is not to be used,
1270 we have an unlocked terminal at the start. */
1273 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1277 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1285 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1286 to be only LF. This is the way that is done. */
1289 if (ioctl (1, HFTGETID
, &tty
) != -1)
1290 write (1, "\033[20l", 5);
1296 /* Appears to do nothing when in PASTHRU mode.
1297 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1298 interrupt_signal, oob_chars, 0, 0, 0, 0);
1300 queue_kbd_input (0);
1305 #ifndef F_SETOWN_BUG
1306 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1307 if (interrupt_input
)
1309 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1310 fcntl (input_fd
, F_SETOWN
, getpid ());
1313 #endif /* F_GETOWN */
1314 #endif /* F_SETOWN_BUG */
1315 #endif /* F_SETFL */
1318 if (interrupt_input
)
1322 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1326 /* This symbol is defined on recent USG systems.
1327 Someone says without this call USG won't really buffer the file
1328 even with a call to setbuf. */
1329 setvbuf (stdout
, _sobuf
, _IOFBF
, sizeof _sobuf
);
1331 setbuf (stdout
, _sobuf
);
1333 set_terminal_modes ();
1334 if (term_initted
&& no_redraw_on_reenter
)
1336 if (display_completed
)
1337 direct_output_forward_char (0);
1343 if (FRAMEP (Vterminal_frame
))
1344 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1351 /* Return nonzero if safe to use tabs in output.
1352 At the time this is called, init_sys_modes has not been done yet. */
1356 struct emacs_tty tty
;
1358 EMACS_GET_TTY (input_fd
, &tty
);
1359 return EMACS_TTY_TABS_OK (&tty
);
1362 /* Get terminal size from system.
1363 Store number of lines into *heightp and width into *widthp.
1364 If zero or a negative number is stored, the value is not valid. */
1366 get_frame_size (widthp
, heightp
)
1367 int *widthp
, *heightp
;
1373 struct winsize size
;
1375 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1376 *widthp
= *heightp
= 0;
1379 *widthp
= size
.ws_col
;
1380 *heightp
= size
.ws_row
;
1386 /* SunOS - style. */
1387 struct ttysize size
;
1389 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1390 *widthp
= *heightp
= 0;
1393 *widthp
= size
.ts_cols
;
1394 *heightp
= size
.ts_lines
;
1400 struct sensemode tty
;
1402 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1403 &tty
.class, 12, 0, 0, 0, 0);
1404 *widthp
= tty
.scr_wid
;
1405 *heightp
= tty
.scr_len
;
1409 *widthp
= ScreenCols ();
1410 *heightp
= ScreenRows ();
1411 #else /* system doesn't know size */
1416 #endif /* not VMS */
1417 #endif /* not SunOS-style */
1418 #endif /* not BSD-style */
1422 /* Prepare the terminal for exiting Emacs; move the cursor to the
1423 bottom of the frame, turn off interrupt-driven I/O, etc. */
1433 if (read_socket_hook
|| !EQ (Vwindow_system
, Qnil
))
1435 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1436 clear_end_of_line (FRAME_WIDTH (selected_frame
));
1437 /* clear_end_of_line may move the cursor */
1438 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1441 /* HFT devices normally use ^J as a LF/CR. We forced it to
1442 do the LF only. Now, we need to reset it. */
1445 if (ioctl (1, HFTGETID
, &tty
) != -1)
1446 write (1, "\033[20h", 5);
1450 reset_terminal_modes ();
1454 /* Avoid possible loss of output when changing terminal modes. */
1455 fsync (fileno (stdout
));
1460 #ifndef F_SETOWN_BUG
1461 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1462 if (interrupt_input
)
1465 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1467 #endif /* F_SETOWN */
1468 #endif /* F_SETOWN_BUG */
1469 #endif /* F_SETFL */
1471 if (interrupt_input
)
1475 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1478 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1487 widen_foreground_group ();
1493 /* Set up the proper status flags for use of a pty. */
1498 /* I'm told that TOICREMOTE does not mean control chars
1499 "can't be sent" but rather that they don't have
1500 input-editing or signaling effects.
1501 That should be good, because we have other ways
1502 to do those things in Emacs.
1503 However, telnet mode seems not to work on 4.2.
1504 So TIOCREMOTE is turned off now. */
1506 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1507 will hang. In particular, the "timeout" feature (which
1508 causes a read to return if there is no data available)
1509 does this. Also it is known that telnet mode will hang
1510 in such a way that Emacs must be stopped (perhaps this
1511 is the same problem).
1513 If TIOCREMOTE is turned off, then there is a bug in
1514 hp-ux which sometimes loses data. Apparently the
1515 code which blocks the master process when the internal
1516 buffer fills up does not work. Other than this,
1517 though, everything else seems to work fine.
1519 Since the latter lossage is more benign, we may as well
1520 lose that way. -- cph */
1525 ioctl (fd
, FIONBIO
, &on
);
1530 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1531 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1532 /* cause EMACS not to die when it should, i.e., when its own controlling */
1533 /* tty goes away. I've complained to the AIX developers, and they may */
1534 /* change this behavior, but I'm not going to hold my breath. */
1535 signal (SIGHUP
, SIG_IGN
);
1538 #endif /* HAVE_PTYS */
1542 /* Assigning an input channel is done at the start of Emacs execution.
1543 This is called each time Emacs is resumed, also, but does nothing
1544 because input_chain is no longer zero. */
1552 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1558 /* Deassigning the input channel is done before exiting. */
1562 return SYS$
DASSGN (input_fd
);
1567 /* Request reading one character into the keyboard buffer.
1568 This is done as soon as the buffer becomes empty. */
1573 extern kbd_input_ast ();
1575 waiting_for_ast
= 0;
1577 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1578 &input_iosb
, kbd_input_ast
, 1,
1579 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1584 /* Ast routine that is called when keyboard input comes in
1585 in accord with the SYS$QIO above. */
1589 register int c
= -1;
1590 int old_errno
= errno
;
1591 extern EMACS_TIME
*input_available_clear_time
;
1593 if (waiting_for_ast
)
1594 SYS$
SETEF (input_ef
);
1595 waiting_for_ast
= 0;
1598 if (input_count
== 25)
1600 printf ("Ast # %d,", input_count
);
1601 printf (" iosb = %x, %x, %x, %x",
1602 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1605 if (input_iosb
.offset
)
1609 printf (", char = 0%o", c
);
1621 struct input_event e
;
1622 e
.kind
= ascii_keystroke
;
1623 XSET (e
.code
, Lisp_Int
, c
);
1625 XSET(e
.frame_or_window
, Lisp_Frame
, selected_frame
);
1627 e
.frame_or_window
= Qnil
;
1629 kbd_buffer_store_event (&e
);
1631 if (input_available_clear_time
)
1632 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1636 /* Wait until there is something in kbd_buffer. */
1638 wait_for_kbd_input ()
1640 extern int have_process_input
, process_exited
;
1642 /* If already something, avoid doing system calls. */
1643 if (detect_input_pending ())
1647 /* Clear a flag, and tell ast routine above to set it. */
1648 SYS$
CLREF (input_ef
);
1649 waiting_for_ast
= 1;
1650 /* Check for timing error: ast happened while we were doing that. */
1651 if (!detect_input_pending ())
1653 /* No timing error: wait for flag to be set. */
1654 set_waiting_for_input (0);
1655 SYS$
WFLOR (input_ef
, input_eflist
);
1656 clear_waiting_for_input (0);
1657 if (!detect_input_pending ())
1658 /* Check for subprocess input availability */
1660 int dsp
= have_process_input
|| process_exited
;
1662 SYS$
CLREF (process_ef
);
1663 if (have_process_input
)
1664 process_command_input ();
1669 update_mode_lines
++;
1670 prepare_menu_bars ();
1671 redisplay_preserve_echo_area ();
1675 waiting_for_ast
= 0;
1678 /* Get rid of any pending QIO, when we are about to suspend
1679 or when we want to throw away pending input.
1680 We wait for a positive sign that the AST routine has run
1681 and therefore there is no I/O request queued when we return.
1682 SYS$SETAST is used to avoid a timing error. */
1687 printf ("At end_kbd_input.\n");
1691 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1693 SYS$
CANCEL (input_fd
);
1698 /* Clear a flag, and tell ast routine above to set it. */
1699 SYS$
CLREF (input_ef
);
1700 waiting_for_ast
= 1;
1702 SYS$
CANCEL (input_fd
);
1704 SYS$
WAITFR (input_ef
);
1705 waiting_for_ast
= 0;
1708 /* Wait for either input available or time interval expiry. */
1710 input_wait_timeout (timeval
)
1711 int timeval
; /* Time to wait, in seconds */
1714 static int zero
= 0;
1715 static int large
= -10000000;
1717 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1719 /* If already something, avoid doing system calls. */
1720 if (detect_input_pending ())
1724 /* Clear a flag, and tell ast routine above to set it. */
1725 SYS$
CLREF (input_ef
);
1726 waiting_for_ast
= 1;
1727 /* Check for timing error: ast happened while we were doing that. */
1728 if (!detect_input_pending ())
1730 /* No timing error: wait for flag to be set. */
1732 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1733 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1735 waiting_for_ast
= 0;
1738 /* The standard `sleep' routine works some other way
1739 and it stops working if you have ever quit out of it.
1740 This one continues to work. */
1746 static int zero
= 0;
1747 static int large
= -10000000;
1749 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1752 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1753 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
1768 croak ("request sigio");
1773 croak ("unrequest sigio");
1778 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
1783 #ifndef SYSTEM_MALLOC
1790 /* Some systems that cannot dump also cannot implement these. */
1793 * Return the address of the start of the text segment prior to
1794 * doing an unexec. After unexec the return value is undefined.
1795 * See crt0.c for further explanation and _start.
1799 #if !defined (CANNOT_UNEXEC) && !defined (HAVE_TEXT_START)
1804 return ((char *) TEXT_START
);
1808 return ((char *) csrt
);
1809 #else /* not GOULD */
1810 extern int _start ();
1811 return ((char *) _start
);
1813 #endif /* TEXT_START */
1815 #endif /* not CANNOT_UNEXEC and not HAVE_TEXT_START */
1818 * Return the address of the start of the data segment prior to
1819 * doing an unexec. After unexec the return value is undefined.
1820 * See crt0.c for further information and definition of data_start.
1822 * Apparently, on BSD systems this is etext at startup. On
1823 * USG systems (swapping) this is highly mmu dependent and
1824 * is also dependent on whether or not the program is running
1825 * with shared text. Generally there is a (possibly large)
1826 * gap between end of text and start of data with shared text.
1828 * On Uniplus+ systems with shared text, data starts at a
1829 * fixed address. Each port (from a given oem) is generally
1830 * different, and the specific value of the start of data can
1831 * be obtained via the UniPlus+ specific "uvar" system call,
1832 * however the method outlined in crt0.c seems to be more portable.
1834 * Probably what will have to happen when a USG unexec is available,
1835 * at least on UniPlus, is temacs will have to be made unshared so
1836 * that text and data are contiguous. Then once loadup is complete,
1837 * unexec will produce a shared executable where the data can be
1838 * at the normal shared text boundry and the startofdata variable
1839 * will be patched by unexec to the correct value.
1847 return ((char *) DATA_START
);
1849 #ifdef ORDINARY_LINK
1851 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
1852 * data_start isn't defined. We take the address of environ, which
1853 * is known to live at or near the start of the system crt0.c, and
1854 * we don't sweat the handful of bytes that might lose.
1856 extern char **environ
;
1858 return((char *) &environ
);
1860 extern int data_start
;
1861 return ((char *) &data_start
);
1862 #endif /* ORDINARY_LINK */
1863 #endif /* DATA_START */
1865 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
1868 /* Some systems that cannot dump also cannot implement these. */
1871 * Return the address of the end of the text segment prior to
1872 * doing an unexec. After unexec the return value is undefined.
1879 return ((char *) TEXT_END
);
1882 return ((char *) &etext
);
1887 * Return the address of the end of the data segment prior to
1888 * doing an unexec. After unexec the return value is undefined.
1895 return ((char *) DATA_END
);
1898 return ((char *) &edata
);
1902 #endif /* not CANNOT_DUMP */
1904 /* get_system_name returns as its value
1905 a string for the Lisp function system-name to return. */
1911 /* Can't have this within the function since `static' is #defined to
1912 nothing for some USG systems. */
1913 static char *get_system_name_cache
;
1914 static int get_system_name_predump_p
;
1919 #include <sys/socket.h>
1921 #endif /* HAVE_SOCKETS */
1922 #endif /* not VMS */
1923 #endif /* not BSD4_1 */
1932 /* If the cached value is from before the dump, and we've dumped
1933 since then, then the cached value is no good. */
1934 if (get_system_name_predump_p
&& initialized
&& get_system_name_cache
)
1936 xfree (get_system_name_cache
);
1937 get_system_name_cache
= 0;
1940 if (!get_system_name_cache
)
1942 /* No cached value, so get the name from the system. */
1945 if ((sp
= egetenv ("SYS$NODE")) == 0)
1951 if ((end
= index (sp
, ':')) != 0)
1954 get_system_name_cache
= (char *) xmalloc (strlen (sp
) + 1);
1955 strcpy (get_system_name_cache
, sp
);
1957 #ifndef HAVE_GETHOSTNAME
1960 get_system_name_cache
= (char *) xmalloc (strlen (uts
.nodename
) + 1);
1961 strcpy (get_system_name_cache
, uts
.nodename
);
1962 #else /* HAVE_GETHOSTNAME */
1964 int hostname_size
= 256;
1965 char *hostname
= (char *) xmalloc (hostname_size
);
1967 /* Try to get the host name; if the buffer is too short, try
1968 again. Apparently, the only indication gethostname gives of
1969 whether the buffer was large enough is the presence or absence
1970 of a '\0' in the string. Eech. */
1973 gethostname (hostname
, hostname_size
- 1);
1974 hostname
[hostname_size
- 1] = '\0';
1976 /* Was the buffer large enough for the '\0'? */
1977 if (strlen (hostname
) < hostname_size
- 1)
1980 hostname_size
<<= 1;
1981 hostname
= (char *) xrealloc (hostname
, hostname_size
);
1983 get_system_name_cache
= hostname
;
1985 /* Turn the hostname into the official, fully-qualified hostname.
1986 Don't do this if we're going to dump; this can confuse system
1987 libraries on some machines and make the dumped emacs core dump. */
1990 #endif /* not CANNOT_DUMP */
1992 struct hostent
*hp
= gethostbyname (hostname
);
1995 char *fqdn
= hp
->h_name
;
1996 if (!index (fqdn
, '.'))
1998 /* We still don't have a fully qualified domain name.
1999 Try to find one in the list of alternate names */
2000 char **alias
= hp
->h_aliases
;
2001 while (*alias
&& !index (*alias
, '.'))
2006 hostname
= (char *) xrealloc (hostname
, strlen (fqdn
) + 1);
2007 strcpy (hostname
, fqdn
);
2010 #endif /* HAVE_SOCKETS */
2011 get_system_name_cache
= hostname
;
2013 #endif /* HAVE_GETHOSTNAME */
2016 get_system_name_predump_p
= !initialized
;
2019 return (get_system_name_cache
);
2026 #ifdef HAVE_X_WINDOWS
2027 /* Cause explanatory error message at compile time,
2028 since the select emulation is not good enough for X. */
2029 int *x
= &x_windows_lose_if_no_select_system_call
;
2032 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2033 * Only checks read descriptors.
2035 /* How long to wait between checking fds in select */
2036 #define SELECT_PAUSE 1
2039 /* For longjmp'ing back to read_input_waiting. */
2041 jmp_buf read_alarm_throw
;
2043 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2044 The read_socket_hook function sets this to 1 while it is waiting. */
2046 int read_alarm_should_throw
;
2054 #else /* not BSD4_1 */
2055 signal (SIGALRM
, SIG_IGN
);
2056 #endif /* not BSD4_1 */
2057 if (read_alarm_should_throw
)
2058 longjmp (read_alarm_throw
, 1);
2061 /* Only rfds are checked. */
2063 select (nfds
, rfds
, wfds
, efds
, timeout
)
2065 int *rfds
, *wfds
, *efds
, *timeout
;
2067 int ravail
= 0, orfds
= 0, old_alarm
;
2068 int timeoutval
= timeout
? *timeout
: 100000;
2069 int *local_timeout
= &timeoutval
;
2070 extern int proc_buffered_char
[];
2071 #ifndef subprocesses
2072 int process_tick
= 0, update_tick
= 0;
2074 extern int process_tick
, update_tick
;
2076 SIGTYPE (*old_trap
) ();
2089 /* If we are looking only for the terminal, with no timeout,
2090 just read it and wait -- that's more efficient. */
2091 if (orfds
== 1 && *local_timeout
== 100000 && process_tick
== update_tick
)
2093 if (! detect_input_pending ())
2094 read_input_waiting ();
2099 /* Once a second, till the timer expires, check all the flagged read
2100 * descriptors to see if any input is available. If there is some then
2101 * set the corresponding bit in the return copy of rfds.
2105 register int to_check
, bit
, fd
;
2109 for (to_check
= nfds
, bit
= 1, fd
= 0; --to_check
>= 0; bit
<<= 1, fd
++)
2113 int avail
= 0, status
= 0;
2116 avail
= detect_input_pending (); /* Special keyboard handler */
2120 status
= ioctl (fd
, FIONREAD
, &avail
);
2121 #else /* no FIONREAD */
2123 abort (); /* I don't think we need it. */
2124 #else /* not MSDOS */
2125 /* Hoping it will return -1 if nothing available
2126 or 0 if all 0 chars requested are read. */
2127 if (proc_buffered_char
[fd
] >= 0)
2131 avail
= read (fd
, &buf
, 1);
2133 proc_buffered_char
[fd
] = buf
;
2135 #endif /* not MSDOS */
2136 #endif /* no FIONREAD */
2138 if (status
>= 0 && avail
> 0)
2146 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2148 old_alarm
= alarm (0);
2149 old_trap
= signal (SIGALRM
, select_alarm
);
2151 alarm (SELECT_PAUSE
);
2152 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2153 while (select_alarmed
== 0 && *local_timeout
!= 0
2154 && process_tick
== update_tick
)
2157 sleep_or_kbd_hit (SELECT_PAUSE
, (orfds
& 1) != 0);
2159 #else /* not MSDOS */
2160 /* If we are interested in terminal input,
2161 wait by reading the terminal.
2162 That makes instant wakeup for terminal input at least. */
2165 read_input_waiting ();
2166 if (detect_input_pending ())
2171 #endif /* not MSDOS */
2173 (*local_timeout
) -= SELECT_PAUSE
;
2174 /* Reset the old alarm if there was one */
2176 signal (SIGALRM
, old_trap
);
2179 /* Reset or forge an interrupt for the original handler. */
2180 old_alarm
-= SELECT_PAUSE
;
2182 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2186 if (*local_timeout
== 0) /* Stop on timer being cleared */
2192 /* Read keyboard input into the standard buffer,
2193 waiting for at least one character. */
2195 /* Make all keyboard buffers much bigger when using X windows. */
2196 #ifdef HAVE_X_WINDOWS
2197 #define BUFFER_SIZE_FACTOR 16
2199 #define BUFFER_SIZE_FACTOR 1
2202 read_input_waiting ()
2204 struct input_event e
;
2206 extern int quit_char
;
2208 if (read_socket_hook
)
2210 struct input_event buf
[256];
2212 read_alarm_should_throw
= 0;
2213 if (! setjmp (read_alarm_throw
))
2214 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2218 /* Scan the chars for C-g and store them in kbd_buffer. */
2219 for (i
= 0; i
< nread
; i
++)
2221 kbd_buffer_store_event (&buf
[i
]);
2222 /* Don't look at input that follows a C-g too closely.
2223 This reduces lossage due to autorepeat on C-g. */
2224 if (buf
[i
].kind
== ascii_keystroke
2225 && XINT(buf
[i
].code
) == quit_char
)
2232 nread
= read (fileno (stdin
), buf
, 1);
2234 /* Scan the chars for C-g and store them in kbd_buffer. */
2235 e
.kind
= ascii_keystroke
;
2236 e
.frame_or_window
= selected_frame
;
2238 for (i
= 0; i
< nread
; i
++)
2240 /* Convert chars > 0177 to meta events if desired.
2241 We do this under the same conditions that read_avail_input does. */
2242 if (read_socket_hook
== 0)
2244 /* If the user says she has a meta key, then believe her. */
2245 if (meta_key
== 1 && (buf
[i
] & 0x80))
2246 e
.modifiers
= meta_modifier
;
2251 XSET (e
.code
, Lisp_Int
, buf
[i
]);
2252 kbd_buffer_store_event (&e
);
2253 /* Don't look at input that follows a C-g too closely.
2254 This reduces lossage due to autorepeat on C-g. */
2255 if (buf
[i
] == quit_char
)
2261 #endif /* not HAVE_SELECT */
2262 #endif /* not VMS */
2266 * Partially emulate 4.2 open call.
2267 * open is defined as this in 4.1.
2269 * - added by Michael Bloom @ Citicorp/TTI
2274 sys_open (path
, oflag
, mode
)
2278 if (oflag
& O_CREAT
)
2279 return creat (path
, mode
);
2281 return open (path
, oflag
);
2288 lmode
= LINTRUP
| lmode
;
2289 ioctl (0, TIOCLSET
, &lmode
);
2296 lmode
= ~LINTRUP
& lmode
;
2297 ioctl (0, TIOCLSET
, &lmode
);
2304 interrupts_deferred
= 0;
2311 interrupts_deferred
= 1;
2314 /* still inside #ifdef BSD4_1 */
2317 int sigheld
; /* Mask of held signals */
2322 sigheld
|= sigbit (signum
);
2329 sigheld
|= sigbit (signum
);
2335 sigheld
&= ~sigbit (signum
);
2339 sigfree () /* Free all held signals */
2342 for (i
= 0; i
< NSIG
; i
++)
2343 if (sigheld
& sigbit (i
))
2350 return 1 << (i
- 1);
2352 #endif /* subprocesses */
2355 /* POSIX signals support - DJB */
2356 /* Anyone with POSIX signals should have ANSI C declarations */
2358 #ifdef POSIX_SIGNALS
2360 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2361 static struct sigaction new_action
, old_action
;
2365 sigemptyset (&empty_mask
);
2366 sigfillset (&full_mask
);
2370 sys_signal (int signal_number
, signal_handler_t action
)
2373 /* This gets us restartable system calls for efficiency.
2374 The "else" code will works as well. */
2375 return (berk_signal (signal_number
, action
));
2377 sigemptyset (&new_action
.sa_mask
);
2378 new_action
.sa_handler
= action
;
2380 /* Emacs mostly works better with restartable system services. If this
2381 * flag exists, we probably want to turn it on here.
2383 new_action
.sa_flags
= SA_RESTART
;
2385 new_action
.sa_flags
= 0;
2387 sigaction (signal_number
, &new_action
, &old_action
);
2388 return (old_action
.sa_handler
);
2393 /* If we're compiling with GCC, we don't need this function, since it
2394 can be written as a macro. */
2396 sys_sigmask (int sig
)
2399 sigemptyset (&mask
);
2400 sigaddset (&mask
, sig
);
2406 sys_sigpause (sigset_t new_mask
)
2408 /* pause emulating berk sigpause... */
2409 sigsuspend (&new_mask
);
2413 /* I'd like to have these guys return pointers to the mask storage in here,
2414 but there'd be trouble if the code was saving multiple masks. I'll be
2415 safe and pass the structure. It normally won't be more than 2 bytes
2419 sys_sigblock (sigset_t new_mask
)
2422 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2427 sys_sigunblock (sigset_t new_mask
)
2430 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2435 sys_sigsetmask (sigset_t new_mask
)
2438 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2442 #endif /* POSIX_SIGNALS */
2451 register int length
;
2455 long max_str
= 65535;
2457 while (length
> max_str
) {
2458 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2463 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2465 while (length
-- > 0)
2467 #endif /* not VMS */
2470 #endif /* no bzero */
2473 /* Saying `void' requires a declaration, above, where bcopy is used
2474 and that declaration causes pain for systems where bcopy is a macro. */
2475 bcopy (b1
, b2
, length
)
2478 register int length
;
2481 long max_str
= 65535;
2483 while (length
> max_str
) {
2484 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
2490 (void) LIB$
MOVC3 (&length
, b1
, b2
);
2492 while (length
-- > 0)
2494 #endif /* not VMS */
2496 #endif /* no bcopy */
2500 bcmp (b1
, b2
, length
) /* This could be a macro! */
2503 register int length
;
2506 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
2507 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
2509 return STR$
COMPARE (&src1
, &src2
);
2511 while (length
-- > 0)
2516 #endif /* not VMS */
2518 #endif /* no bcmp */
2520 #endif /* not BSTRING */
2525 * The BSD random returns numbers in the range of
2526 * 0 to 2e31 - 1. The USG rand returns numbers in the
2527 * range of 0 to 2e15 - 1. This is probably not significant
2534 /* Arrange to return a range centered on zero. */
2535 return (rand () << 15) + rand () - (1 << 29);
2549 /* Arrange to return a range centered on zero. */
2550 return (rand () << 15) + rand () - (1 << 29);
2561 #ifdef WRONG_NAME_INSQUE
2574 /* If any place else asks for the TERM variable,
2575 allow it to be overridden with the EMACS_TERM variable
2576 before attempting to translate the logical name TERM. As a last
2577 resort, ask for VAX C's special idea of the TERM variable. */
2584 static char buf
[256];
2585 static struct dsc$descriptor_s equiv
2586 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2587 static struct dsc$descriptor_s d_name
2588 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2591 if (!strcmp (name
, "TERM"))
2593 val
= (char *) getenv ("EMACS_TERM");
2598 d_name
.dsc$w_length
= strlen (name
);
2599 d_name
.dsc$a_pointer
= name
;
2600 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2602 char *str
= (char *) xmalloc (eqlen
+ 1);
2603 bcopy (buf
, str
, eqlen
);
2605 /* This is a storage leak, but a pain to fix. With luck,
2606 no one will ever notice. */
2609 return (char *) getenv (name
);
2614 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2615 to force a call on the debugger from within the image. */
2620 LIB$
SIGNAL (SS$_DEBUG
);
2626 #ifdef LINK_CRTL_SHARE
2627 #ifdef SHAREABLE_LIB_BUG
2628 /* Variables declared noshare and initialized in sharable libraries
2629 cannot be shared. The VMS linker incorrectly forces you to use a private
2630 version which is uninitialized... If not for this "feature", we
2631 could use the C library definition of sys_nerr and sys_errlist. */
2633 char *sys_errlist
[] =
2637 "no such file or directory",
2639 "interrupted system call",
2641 "no such device or address",
2642 "argument list too long",
2643 "exec format error",
2646 "no more processes",
2647 "not enough memory",
2648 "permission denied",
2650 "block device required",
2651 "mount devices busy",
2653 "cross-device link",
2658 "file table overflow",
2659 "too many open files",
2663 "no space left on device",
2665 "read-only file system",
2671 "vax/vms specific error code nontranslatable error"
2673 #endif /* SHAREABLE_LIB_BUG */
2674 #endif /* LINK_CRTL_SHARE */
2677 #ifndef HAVE_STRERROR
2682 extern char *sys_errlist
[];
2683 extern int sys_nerr
;
2685 if (errnum
>= 0 && errnum
< sys_nerr
)
2686 return sys_errlist
[errnum
];
2687 return (char *) "Unknown error";
2690 #endif /* ! HAVE_STRERROR */
2692 #ifdef INTERRUPTIBLE_OPEN
2696 sys_open (path
, oflag
, mode
)
2700 register int rtnval
;
2702 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2703 && (errno
== EINTR
));
2707 #endif /* INTERRUPTIBLE_OPEN */
2709 #ifdef INTERRUPTIBLE_CLOSE
2714 register int rtnval
;
2716 while ((rtnval
= close (fd
)) == -1
2717 && (errno
== EINTR
));
2721 #endif /* INTERRUPTIBLE_CLOSE */
2723 #ifdef INTERRUPTIBLE_IO
2726 sys_read (fildes
, buf
, nbyte
)
2731 register int rtnval
;
2733 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2734 && (errno
== EINTR
));
2739 sys_write (fildes
, buf
, nbyte
)
2744 register int rtnval
, bytes_written
;
2750 rtnval
= write (fildes
, buf
, nbyte
);
2762 bytes_written
+= rtnval
;
2764 return (bytes_written
);
2767 #endif /* INTERRUPTIBLE_IO */
2772 * Substitute fork for vfork on USG flavors.
2780 #endif /* not HAVE_VFORK */
2784 * All of the following are for USG.
2786 * On USG systems the system calls are INTERRUPTIBLE by signals
2787 * that the user program has elected to catch. Thus the system call
2788 * must be retried in these cases. To handle this without massive
2789 * changes in the source code, we remap the standard system call names
2790 * to names for our own functions in sysdep.c that do the system call
2791 * with retries. Actually, for portability reasons, it is good
2792 * programming practice, as this example shows, to limit all actual
2793 * system calls to a single occurrence in the source. Sure, this
2794 * adds an extra level of function call overhead but it is almost
2795 * always negligible. Fred Fish, Unisoft Systems Inc.
2798 #ifndef HAVE_SYS_SIGLIST
2799 char *sys_siglist
[NSIG
+ 1] =
2802 /* AIX has changed the signals a bit */
2803 "bogus signal", /* 0 */
2804 "hangup", /* 1 SIGHUP */
2805 "interrupt", /* 2 SIGINT */
2806 "quit", /* 3 SIGQUIT */
2807 "illegal instruction", /* 4 SIGILL */
2808 "trace trap", /* 5 SIGTRAP */
2809 "IOT instruction", /* 6 SIGIOT */
2810 "crash likely", /* 7 SIGDANGER */
2811 "floating point exception", /* 8 SIGFPE */
2812 "kill", /* 9 SIGKILL */
2813 "bus error", /* 10 SIGBUS */
2814 "segmentation violation", /* 11 SIGSEGV */
2815 "bad argument to system call", /* 12 SIGSYS */
2816 "write on a pipe with no one to read it", /* 13 SIGPIPE */
2817 "alarm clock", /* 14 SIGALRM */
2818 "software termination signum", /* 15 SIGTERM */
2819 "user defined signal 1", /* 16 SIGUSR1 */
2820 "user defined signal 2", /* 17 SIGUSR2 */
2821 "death of a child", /* 18 SIGCLD */
2822 "power-fail restart", /* 19 SIGPWR */
2823 "bogus signal", /* 20 */
2824 "bogus signal", /* 21 */
2825 "bogus signal", /* 22 */
2826 "bogus signal", /* 23 */
2827 "bogus signal", /* 24 */
2828 "LAN I/O interrupt", /* 25 SIGAIO */
2829 "PTY I/O interrupt", /* 26 SIGPTY */
2830 "I/O intervention required", /* 27 SIGIOINT */
2831 "HFT grant", /* 28 SIGGRANT */
2832 "HFT retract", /* 29 SIGRETRACT */
2833 "HFT sound done", /* 30 SIGSOUND */
2834 "HFT input ready", /* 31 SIGMSG */
2836 "bogus signal", /* 0 */
2837 "hangup", /* 1 SIGHUP */
2838 "interrupt", /* 2 SIGINT */
2839 "quit", /* 3 SIGQUIT */
2840 "illegal instruction", /* 4 SIGILL */
2841 "trace trap", /* 5 SIGTRAP */
2842 "IOT instruction", /* 6 SIGIOT */
2843 "EMT instruction", /* 7 SIGEMT */
2844 "floating point exception", /* 8 SIGFPE */
2845 "kill", /* 9 SIGKILL */
2846 "bus error", /* 10 SIGBUS */
2847 "segmentation violation", /* 11 SIGSEGV */
2848 "bad argument to system call", /* 12 SIGSYS */
2849 "write on a pipe with no one to read it", /* 13 SIGPIPE */
2850 "alarm clock", /* 14 SIGALRM */
2851 "software termination signum", /* 15 SIGTERM */
2852 "user defined signal 1", /* 16 SIGUSR1 */
2853 "user defined signal 2", /* 17 SIGUSR2 */
2854 "death of a child", /* 18 SIGCLD */
2855 "power-fail restart", /* 19 SIGPWR */
2857 "window size change", /* 20 SIGWINCH */
2858 "urgent socket condition", /* 21 SIGURG */
2859 "pollable event occured", /* 22 SIGPOLL */
2860 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
2861 "user stop requested from tty", /* 24 SIGTSTP */
2862 "stopped process has been continued", /* 25 SIGCONT */
2863 "background tty read attempted", /* 26 SIGTTIN */
2864 "background tty write attempted", /* 27 SIGTTOU */
2865 "virtual timer expired", /* 28 SIGVTALRM */
2866 "profiling timer expired", /* 29 SIGPROF */
2867 "exceeded cpu limit", /* 30 SIGXCPU */
2868 "exceeded file size limit", /* 31 SIGXFSZ */
2869 "process's lwps are blocked", /* 32 SIGWAITING */
2870 "special signal used by thread library", /* 33 SIGLWP */
2871 "Special Signal Used By CPR", /* 34 SIGFREEZE */
2872 "Special Signal Used By CPR", /* 35 SIGTHAW */
2874 #endif /* not AIX */
2877 #endif /* HAVE_SYS_SIGLIST */
2880 * Warning, this function may not duplicate 4.2 action properly
2881 * under error conditions.
2885 /* In 4.1, param.h fails to define this. */
2886 #define MAXPATHLEN 1024
2895 char *npath
, *spath
;
2896 extern char *getcwd ();
2898 BLOCK_INPUT
; /* getcwd uses malloc */
2899 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2902 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2903 up to first slash. Should be harmless on other systems. */
2904 while (*npath
&& *npath
!= '/')
2906 strcpy (pathname
, npath
);
2907 free (spath
); /* getcwd uses malloc */
2912 #endif /* HAVE_GETWD */
2915 * Emulate rename using unlink/link. Note that this is
2916 * only partially correct. Also, doesn't enforce restriction
2917 * that files be of same type (regular->regular, dir->dir, etc).
2926 if (access (from
, 0) == 0)
2929 if (link (from
, to
) == 0)
2930 if (unlink (from
) == 0)
2938 #ifdef MISSING_UTIMES
2940 /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes. */
2949 /* The IRIS (3.5) has timevals, but uses sys V utime, and doesn't have the
2950 utimbuf structure defined anywhere but in the man page. */
2960 struct timeval tvp
[];
2963 utb
.actime
= tvp
[0].tv_sec
;
2964 utb
.modtime
= tvp
[1].tv_sec
;
2967 #endif /* IRIS_UTIME */
2973 /* HPUX curses library references perror, but as far as we know
2974 it won't be called. Anyway this definition will do for now. */
2980 #endif /* not HAVE_PERROR */
2986 * Emulate BSD dup2. First close newd if it already exists.
2987 * Then, attempt to dup oldd. If not successful, call dup2 recursively
2988 * until we are, then close the unsuccessful ones.
2995 register int fd
, ret
;
3000 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3002 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3009 ret
= dup2 (old
,new);
3015 #endif /* not HAVE_DUP2 */
3018 * Gettimeofday. Simulate as much as possible. Only accurate
3019 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3020 * Only needed when subprocesses are defined.
3025 #ifndef HAVE_GETTIMEOFDAY
3029 gettimeofday (tp
, tzp
)
3031 struct timezone
*tzp
;
3033 extern long time ();
3035 tp
->tv_sec
= time ((long *)0);
3038 tzp
->tz_minuteswest
= -1;
3044 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3047 * This function will go away as soon as all the stubs fixed. (fnf)
3053 printf ("%s not yet implemented\r\n", badfunc
);
3062 char *sys_siglist
[NSIG
+ 1] =
3064 "null signal", /* 0 SIGNULL */
3065 "hangup", /* 1 SIGHUP */
3066 "interrupt", /* 2 SIGINT */
3067 "quit", /* 3 SIGQUIT */
3068 "illegal instruction", /* 4 SIGILL */
3069 "trace trap", /* 5 SIGTRAP */
3070 "abort termination", /* 6 SIGABRT */
3071 "SIGEMT", /* 7 SIGEMT */
3072 "floating point exception", /* 8 SIGFPE */
3073 "kill", /* 9 SIGKILL */
3074 "bus error", /* 10 SIGBUS */
3075 "segmentation violation", /* 11 SIGSEGV */
3076 "bad argument to system call", /* 12 SIGSYS */
3077 "write on a pipe with no reader", /* 13 SIGPIPE */
3078 "alarm clock", /* 14 SIGALRM */
3079 "software termination signal", /* 15 SIGTERM */
3080 "user defined signal 1", /* 16 SIGUSR1 */
3081 "user defined signal 2", /* 17 SIGUSR2 */
3082 "child stopped or terminated", /* 18 SIGCLD */
3083 "power-fail restart", /* 19 SIGPWR */
3084 "window size changed", /* 20 SIGWINCH */
3085 "undefined", /* 21 */
3086 "pollable event occurred", /* 22 SIGPOLL */
3087 "sendable stop signal not from tty", /* 23 SIGSTOP */
3088 "stop signal from tty", /* 24 SIGSTP */
3089 "continue a stopped process", /* 25 SIGCONT */
3090 "attempted background tty read", /* 26 SIGTTIN */
3091 "attempted background tty write", /* 27 SIGTTOU */
3092 "undefined", /* 28 */
3093 "undefined", /* 29 */
3094 "undefined", /* 30 */
3095 "undefined", /* 31 */
3096 "undefined", /* 32 */
3097 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3098 "I/O is possible", /* 34 SIGIO */
3099 "exceeded cpu time limit", /* 35 SIGXCPU */
3100 "exceeded file size limit", /* 36 SIGXFSZ */
3101 "virtual time alarm", /* 37 SIGVTALRM */
3102 "profiling time alarm", /* 38 SIGPROF */
3103 "undefined", /* 39 */
3104 "file record locks revoked", /* 40 SIGLOST */
3105 "undefined", /* 41 */
3106 "undefined", /* 42 */
3107 "undefined", /* 43 */
3108 "undefined", /* 44 */
3109 "undefined", /* 45 */
3110 "undefined", /* 46 */
3111 "undefined", /* 47 */
3112 "undefined", /* 48 */
3113 "undefined", /* 49 */
3114 "undefined", /* 50 */
3115 "undefined", /* 51 */
3116 "undefined", /* 52 */
3117 "undefined", /* 53 */
3118 "undefined", /* 54 */
3119 "undefined", /* 55 */
3120 "undefined", /* 56 */
3121 "undefined", /* 57 */
3122 "undefined", /* 58 */
3123 "undefined", /* 59 */
3124 "undefined", /* 60 */
3125 "undefined", /* 61 */
3126 "undefined", /* 62 */
3127 "undefined", /* 63 */
3128 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3134 /* Directory routines for systems that don't have them. */
3136 #ifdef SYSV_SYSTEM_DIR
3140 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3144 register DIR *dirp
; /* stream from opendir */
3148 rtnval
= sys_close (dirp
->dd_fd
);
3150 /* Some systems (like Solaris) allocate the buffer and the DIR all
3151 in one block. Why in the world are we freeing this ourselves
3153 #if ! (defined (sun) && defined (USG5_4))
3154 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3156 xfree ((char *) dirp
);
3160 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3161 #endif /* SYSV_SYSTEM_DIR */
3163 #ifdef NONSYSTEM_DIR_LIBRARY
3167 char *filename
; /* name of directory */
3169 register DIR *dirp
; /* -> malloc'ed storage */
3170 register int fd
; /* file descriptor for read */
3171 struct stat sbuf
; /* result of fstat */
3173 fd
= sys_open (filename
, 0);
3178 if (fstat (fd
, &sbuf
) < 0
3179 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3180 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3184 return 0; /* bad luck today */
3189 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3196 register DIR *dirp
; /* stream from opendir */
3198 sys_close (dirp
->dd_fd
);
3199 xfree ((char *) dirp
);
3207 ino_t od_ino
; /* inode */
3208 char od_name
[DIRSIZ
]; /* filename */
3210 #endif /* not VMS */
3212 struct direct dir_static
; /* simulated directory contents */
3217 register DIR *dirp
; /* stream from opendir */
3220 register struct olddir
*dp
; /* -> directory data */
3222 register struct dir$_name
*dp
; /* -> directory data */
3223 register struct dir$_version
*dv
; /* -> version data */
3228 if (dirp
->dd_loc
>= dirp
->dd_size
)
3229 dirp
->dd_loc
= dirp
->dd_size
= 0;
3231 if (dirp
->dd_size
== 0 /* refill buffer */
3232 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3236 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3237 dirp
->dd_loc
+= sizeof (struct olddir
);
3239 if (dp
->od_ino
!= 0) /* not deleted entry */
3241 dir_static
.d_ino
= dp
->od_ino
;
3242 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3243 dir_static
.d_name
[DIRSIZ
] = '\0';
3244 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3245 dir_static
.d_reclen
= sizeof (struct direct
)
3247 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3248 return &dir_static
; /* -> simulated structure */
3251 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3252 if (dirp
->dd_loc
== 0)
3253 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3254 : dp
->dir$b_namecount
;
3255 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3256 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3257 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3258 dir_static
.d_reclen
= sizeof (struct direct
)
3260 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3261 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3262 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3263 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3270 /* readdirver is just like readdir except it returns all versions of a file
3271 as separate entries. */
3276 register DIR *dirp
; /* stream from opendir */
3278 register struct dir$_name
*dp
; /* -> directory data */
3279 register struct dir$_version
*dv
; /* -> version data */
3281 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3282 dirp
->dd_loc
= dirp
->dd_size
= 0;
3284 if (dirp
->dd_size
== 0 /* refill buffer */
3285 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3288 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3289 if (dirp
->dd_loc
== 0)
3290 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3291 : dp
->dir$b_namecount
;
3292 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3293 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3294 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3295 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3296 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3297 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3298 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3299 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3305 #endif /* NONSYSTEM_DIR_LIBRARY */
3308 /* mkdir and rmdir functions, for systems which don't have them. */
3312 * Written by Robert Rother, Mariah Corporation, August 1985.
3314 * If you want it, it's yours. All I ask in return is that if you
3315 * figure out how to do this in a Bourne Shell script you send me
3317 * sdcsvax!rmr or rmr@uscd
3319 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3320 * subroutine. 11Mar86; hoptoad!gnu
3322 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3323 * subroutine didn't return EEXIST. It does now.
3329 #ifdef MKDIR_PROTOTYPE
3333 mkdir (dpath
, dmode
)
3338 int cpid
, status
, fd
;
3339 struct stat statbuf
;
3341 if (stat (dpath
, &statbuf
) == 0)
3343 errno
= EEXIST
; /* Stat worked, so it already exists */
3347 /* If stat fails for a reason other than non-existence, return error */
3348 if (errno
!= ENOENT
)
3351 synch_process_alive
= 1;
3352 switch (cpid
= fork ())
3355 case -1: /* Error in fork */
3356 return (-1); /* Errno is set already */
3358 case 0: /* Child process */
3360 * Cheap hack to set mode of new directory. Since this
3361 * child process is going away anyway, we zap its umask.
3362 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3363 * directory. Does anybody care?
3365 status
= umask (0); /* Get current umask */
3366 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3367 fd
= sys_open("/dev/null", 2);
3374 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3375 _exit (-1); /* Can't exec /bin/mkdir */
3377 default: /* Parent process */
3378 wait_for_termination (cpid
);
3381 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3383 errno
= EIO
; /* We don't know why, but */
3384 return -1; /* /bin/mkdir failed */
3389 #endif /* not HAVE_MKDIR */
3396 int cpid
, status
, fd
;
3397 struct stat statbuf
;
3399 if (stat (dpath
, &statbuf
) != 0)
3401 /* Stat just set errno. We don't have to */
3405 synch_process_alive
= 1;
3406 switch (cpid
= fork ())
3409 case -1: /* Error in fork */
3410 return (-1); /* Errno is set already */
3412 case 0: /* Child process */
3413 fd
= sys_open("/dev/null", 2);
3420 wait_for_termination (cpid
);
3421 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3422 return -1; /* /bin/rmdir failed */
3423 default: /* Parent process */
3424 while (cpid
!= wait (&status
)); /* Wait for kid to finish */
3427 if (WIFSIGNALED (status
) || WEXITSTATUS (status
) != 0)
3429 errno
= EIO
; /* We don't know why, but */
3430 return -1; /* /bin/mkdir failed */
3435 #endif /* !HAVE_RMDIR */
3439 /* Functions for VMS */
3441 #include "vms-pwd.h"
3446 /* Return as a string the VMS error string pertaining to STATUS.
3447 Reuses the same static buffer each time it is called. */
3451 int status
; /* VMS status code */
3455 static char buf
[257];
3457 bufadr
[0] = sizeof buf
- 1;
3458 bufadr
[1] = (int) buf
;
3459 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3460 return "untranslatable VMS error status";
3468 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3469 * not work correctly. (It also doesn't work well in version 2.3.)
3474 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3475 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3479 unsigned short s_buflen
;
3480 unsigned short s_code
;
3482 unsigned short *s_retlenadr
;
3486 #define buflen s.s_buflen
3487 #define code s.s_code
3488 #define bufadr s.s_bufadr
3489 #define retlenadr s.s_retlenadr
3491 #define R_OK 4 /* test for read permission */
3492 #define W_OK 2 /* test for write permission */
3493 #define X_OK 1 /* test for execute (search) permission */
3494 #define F_OK 0 /* test for presence of file */
3497 sys_access (path
, mode
)
3501 static char *user
= NULL
;
3504 /* translate possible directory spec into .DIR file name, so brain-dead
3505 * access can treat the directory like a file. */
3506 if (directory_file_name (path
, dir_fn
))
3510 return access (path
, mode
);
3511 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3517 unsigned short int dummy
;
3519 static int constant
= ACL$C_FILE
;
3520 DESCRIPTOR (path_desc
, path
);
3521 DESCRIPTOR (user_desc
, user
);
3525 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3528 acces
|= CHP$M_READ
;
3530 acces
|= CHP$M_WRITE
;
3531 itemlst
[0].buflen
= sizeof (int);
3532 itemlst
[0].code
= CHP$_FLAGS
;
3533 itemlst
[0].bufadr
= (char *) &flags
;
3534 itemlst
[0].retlenadr
= &dummy
;
3535 itemlst
[1].buflen
= sizeof (int);
3536 itemlst
[1].code
= CHP$_ACCESS
;
3537 itemlst
[1].bufadr
= (char *) &acces
;
3538 itemlst
[1].retlenadr
= &dummy
;
3539 itemlst
[2].end
= CHP$_END
;
3540 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3541 return stat
== SS$_NORMAL
? 0 : -1;
3545 #else /* not VMS4_4 */
3548 #define ACE$M_WRITE 2
3549 #define ACE$C_KEYID 1
3551 static unsigned short memid
, grpid
;
3552 static unsigned int uic
;
3554 /* Called from init_sys_modes, so it happens not very often
3555 but at least each time Emacs is loaded. */
3556 sys_access_reinit ()
3562 sys_access (filename
, type
)
3568 int status
, size
, i
, typecode
, acl_controlled
;
3569 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3570 union prvdef prvmask
;
3572 /* Get UIC and GRP values for protection checking. */
3575 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3578 memid
= uic
& 0xFFFF;
3582 if (type
!= 2) /* not checking write access */
3583 return access (filename
, type
);
3585 /* Check write protection. */
3587 #define CHECKPRIV(bit) (prvmask.bit)
3588 #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3590 /* Find privilege bits */
3591 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3593 error ("Unable to find privileges: %s", vmserrstr (status
));
3594 if (CHECKPRIV (PRV$V_BYPASS
))
3595 return 0; /* BYPASS enabled */
3597 fab
.fab$b_fac
= FAB$M_GET
;
3598 fab
.fab$l_fna
= filename
;
3599 fab
.fab$b_fns
= strlen (filename
);
3600 fab
.fab$l_xab
= &xab
;
3601 xab
= cc$rms_xabpro
;
3602 xab
.xab$l_aclbuf
= aclbuf
;
3603 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3604 status
= SYS$
OPEN (&fab
, 0, 0);
3607 SYS$
CLOSE (&fab
, 0, 0);
3608 /* Check system access */
3609 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITEABLE (XAB$V_SYS
))
3611 /* Check ACL entries, if any */
3613 if (xab
.xab$w_acllen
> 0)
3616 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3617 while (*aclptr
&& aclptr
< aclend
)
3619 size
= (*aclptr
& 0xff) / 4;
3620 typecode
= (*aclptr
>> 8) & 0xff;
3621 if (typecode
== ACE$C_KEYID
)
3622 for (i
= size
- 1; i
> 1; i
--)
3623 if (aclptr
[i
] == uic
)
3626 if (aclptr
[1] & ACE$M_WRITE
)
3627 return 0; /* Write access through ACL */
3629 aclptr
= &aclptr
[size
];
3631 if (acl_controlled
) /* ACL specified, prohibits write access */
3634 /* No ACL entries specified, check normal protection */
3635 if (WRITEABLE (XAB$V_WLD
)) /* World writeable */
3637 if (WRITEABLE (XAB$V_GRP
) &&
3638 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3639 return 0; /* Group writeable */
3640 if (WRITEABLE (XAB$V_OWN
) &&
3641 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3642 return 0; /* Owner writeable */
3644 return -1; /* Not writeable */
3646 #endif /* not VMS4_4 */
3649 static char vtbuf
[NAM$C_MAXRSS
+1];
3651 /* translate a vms file spec to a unix path */
3653 sys_translate_vms (vfile
)
3664 /* leading device or logical name is a root directory */
3665 if (p
= strchr (vfile
, ':'))
3674 if (*p
== '[' || *p
== '<')
3676 while (*++vfile
!= *p
+ 2)
3680 if (vfile
[-1] == *p
)
3703 static char utbuf
[NAM$C_MAXRSS
+1];
3705 /* translate a unix path to a VMS file spec */
3707 sys_translate_unix (ufile
)
3730 if (index (&ufile
[1], '/'))
3737 if (index (&ufile
[1], '/'))
3744 if (strncmp (ufile
, "./", 2) == 0)
3751 ufile
++; /* skip the dot */
3752 if (index (&ufile
[1], '/'))
3757 else if (strncmp (ufile
, "../", 3) == 0)
3765 ufile
+= 2; /* skip the dots */
3766 if (index (&ufile
[1], '/'))
3791 extern char *getcwd ();
3793 #define MAXPATHLEN 1024
3795 ptr
= xmalloc (MAXPATHLEN
);
3796 val
= getcwd (ptr
, MAXPATHLEN
);
3802 strcpy (pathname
, ptr
);
3810 long item_code
= JPI$_OWNER
;
3811 unsigned long parent_id
;
3814 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
3817 vaxc$errno
= status
;
3827 return (getgid () << 16) | getuid ();
3831 sys_read (fildes
, buf
, nbyte
)
3836 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
3841 sys_write (fildes
, buf
, nbyte
)
3846 register int nwrote
, rtnval
= 0;
3848 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
3854 return rtnval
? rtnval
: -1;
3855 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
3856 return rtnval
? rtnval
: -1;
3857 return (rtnval
+ nwrote
);
3862 * VAX/VMS VAX C RTL really loses. It insists that records
3863 * end with a newline (carriage return) character, and if they
3864 * don't it adds one (nice of it isn't it!)
3866 * Thus we do this stupidity below.
3870 sys_write (fildes
, buf
, nbytes
)
3873 unsigned int nbytes
;
3880 fstat (fildes
, &st
);
3886 /* Handle fixed-length files with carriage control. */
3887 if (st
.st_fab_rfm
== FAB$C_FIX
3888 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
3890 len
= st
.st_fab_mrs
;
3891 retval
= write (fildes
, p
, min (len
, nbytes
));
3894 retval
++; /* This skips the implied carriage control */
3898 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
3899 while (*e
!= '\n' && e
> p
) e
--;
3900 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
3901 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
3903 retval
= write (fildes
, p
, len
);
3914 /* Create file NEW copying its attributes from file OLD. If
3915 OLD is 0 or does not exist, create based on the value of
3918 /* Protection value the file should ultimately have.
3919 Set by create_copy_attrs, and use by rename_sansversions. */
3920 static unsigned short int fab_final_pro
;
3923 creat_copy_attrs (old
, new)
3926 struct FAB fab
= cc$rms_fab
;
3927 struct XABPRO xabpro
;
3928 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
3929 extern int vms_stmlf_recfm
;
3933 fab
.fab$b_fac
= FAB$M_GET
;
3934 fab
.fab$l_fna
= old
;
3935 fab
.fab$b_fns
= strlen (old
);
3936 fab
.fab$l_xab
= (char *) &xabpro
;
3937 xabpro
= cc$rms_xabpro
;
3938 xabpro
.xab$l_aclbuf
= aclbuf
;
3939 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
3940 /* Call $OPEN to fill in the fab & xabpro fields. */
3941 if (SYS$
OPEN (&fab
, 0, 0) & 1)
3943 SYS$
CLOSE (&fab
, 0, 0);
3944 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
3945 if (xabpro
.xab$w_acllen
> 0)
3947 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
3948 /* If the acl buffer was too short, redo open with longer one.
3949 Wouldn't need to do this if there were some system imposed
3950 limit on the size of an ACL, but I can't find any such. */
3952 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
3953 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
3954 if (SYS$
OPEN (&fab
, 0, 0) & 1)
3955 SYS$
CLOSE (&fab
, 0, 0);
3961 xabpro
.xab$l_aclbuf
= 0;
3966 fab
.fab$l_fna
= new;
3967 fab
.fab$b_fns
= strlen (new);
3971 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
3972 fab
.fab$b_rat
= FAB$M_CR
;
3975 /* Set the file protections such that we will be able to manipulate
3976 this file. Once we are done writing and renaming it, we will set
3977 the protections back. */
3979 fab_final_pro
= xabpro
.xab$w_pro
;
3981 SYS$
SETDFPROT (0, &fab_final_pro
);
3982 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
3984 /* Create the new file with either default attrs or attrs copied
3986 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
3988 SYS$
CLOSE (&fab
, 0, 0);
3989 /* As this is a "replacement" for creat, return a file descriptor
3990 opened for writing. */
3991 return open (new, O_WRONLY
);
3996 #include <varargs.h>
3999 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4003 sys_creat (va_alist
)
4006 va_list list_incrementer
;
4009 int rfd
; /* related file descriptor */
4010 int fd
; /* Our new file descriptor */
4017 extern int vms_stmlf_recfm
;
4020 va_start (list_incrementer
);
4021 name
= va_arg (list_incrementer
, char *);
4022 mode
= va_arg (list_incrementer
, int);
4024 rfd
= va_arg (list_incrementer
, int);
4025 va_end (list_incrementer
);
4028 /* Use information from the related file descriptor to set record
4029 format of the newly created file. */
4030 fstat (rfd
, &st_buf
);
4031 switch (st_buf
.st_fab_rfm
)
4034 strcpy (rfm
, "rfm = fix");
4035 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4036 strcpy (rat
, "rat = ");
4037 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4039 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4040 strcat (rat
, "ftn");
4041 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4042 strcat (rat
, "prn");
4043 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4044 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4045 strcat (rat
, ", blk");
4047 strcat (rat
, "blk");
4048 return creat (name
, 0, rfm
, rat
, mrs
);
4051 strcpy (rfm
, "rfm = vfc");
4052 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4053 strcpy (rat
, "rat = ");
4054 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4056 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4057 strcat (rat
, "ftn");
4058 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4059 strcat (rat
, "prn");
4060 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4061 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4062 strcat (rat
, ", blk");
4064 strcat (rat
, "blk");
4065 return creat (name
, 0, rfm
, rat
, fsz
);
4068 strcpy (rfm
, "rfm = stm");
4072 strcpy (rfm
, "rfm = stmcr");
4076 strcpy (rfm
, "rfm = stmlf");
4080 strcpy (rfm
, "rfm = udf");
4084 strcpy (rfm
, "rfm = var");
4087 strcpy (rat
, "rat = ");
4088 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4090 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4091 strcat (rat
, "ftn");
4092 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4093 strcat (rat
, "prn");
4094 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4095 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4096 strcat (rat
, ", blk");
4098 strcat (rat
, "blk");
4102 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4103 strcpy (rat
, "rat=cr");
4105 /* Until the VAX C RTL fixes the many bugs with modes, always use
4106 mode 0 to get the user's default protection. */
4107 fd
= creat (name
, 0, rfm
, rat
);
4108 if (fd
< 0 && errno
== EEXIST
)
4110 if (unlink (name
) < 0)
4111 report_file_error ("delete", build_string (name
));
4112 fd
= creat (name
, 0, rfm
, rat
);
4118 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4119 sys_fwrite (ptr
, size
, num
, fp
)
4120 register char * ptr
;
4123 register int tot
= num
* size
;
4130 * The VMS C library routine creat actually creates a new version of an
4131 * existing file rather than truncating the old version. There are times
4132 * when this is not the desired behavior, for instance, when writing an
4133 * auto save file (you only want one version), or when you don't have
4134 * write permission in the directory containing the file (but the file
4135 * itself is writable). Hence this routine, which is equivalent to
4136 * "close (creat (fn, 0));" on Unix if fn already exists.
4142 struct FAB xfab
= cc$rms_fab
;
4143 struct RAB xrab
= cc$rms_rab
;
4146 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4147 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4148 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4149 xfab
.fab$l_fna
= fn
;
4150 xfab
.fab$b_fns
= strlen (fn
);
4151 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4153 xrab
.rab$l_fab
= &xfab
;
4155 /* This gibberish opens the file, positions to the first record, and
4156 deletes all records from there until the end of file. */
4157 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4159 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4160 (SYS$
FIND (&xrab
) & 01) == 01 &&
4161 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4172 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4173 SYSPRV or a readable SYSUAF.DAT. */
4179 * Routine to read the VMS User Authorization File and return
4180 * a specific user's record.
4183 static struct UAF retuaf
;
4186 get_uaf_name (uname
)
4193 uaf_fab
= cc$rms_fab
;
4194 uaf_rab
= cc$rms_rab
;
4195 /* initialize fab fields */
4196 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4197 uaf_fab
.fab$b_fns
= 21;
4198 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4199 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4200 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4201 /* initialize rab fields */
4202 uaf_rab
.rab$l_fab
= &uaf_fab
;
4203 /* open the User Authorization File */
4204 status
= SYS$
OPEN (&uaf_fab
);
4208 vaxc$errno
= status
;
4211 status
= SYS$
CONNECT (&uaf_rab
);
4215 vaxc$errno
= status
;
4218 /* read the requested record - index is in uname */
4219 uaf_rab
.rab$l_kbf
= uname
;
4220 uaf_rab
.rab$b_ksz
= strlen (uname
);
4221 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4222 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4223 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4224 status
= SYS$
GET (&uaf_rab
);
4228 vaxc$errno
= status
;
4231 /* close the User Authorization File */
4232 status
= SYS$
DISCONNECT (&uaf_rab
);
4236 vaxc$errno
= status
;
4239 status
= SYS$
CLOSE (&uaf_fab
);
4243 vaxc$errno
= status
;
4257 uaf_fab
= cc$rms_fab
;
4258 uaf_rab
= cc$rms_rab
;
4259 /* initialize fab fields */
4260 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4261 uaf_fab
.fab$b_fns
= 21;
4262 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4263 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4264 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4265 /* initialize rab fields */
4266 uaf_rab
.rab$l_fab
= &uaf_fab
;
4267 /* open the User Authorization File */
4268 status
= SYS$
OPEN (&uaf_fab
);
4272 vaxc$errno
= status
;
4275 status
= SYS$
CONNECT (&uaf_rab
);
4279 vaxc$errno
= status
;
4282 /* read the requested record - index is in uic */
4283 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4284 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4285 uaf_rab
.rab$b_ksz
= sizeof uic
;
4286 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4287 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4288 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4289 status
= SYS$
GET (&uaf_rab
);
4293 vaxc$errno
= status
;
4296 /* close the User Authorization File */
4297 status
= SYS$
DISCONNECT (&uaf_rab
);
4301 vaxc$errno
= status
;
4304 status
= SYS$
CLOSE (&uaf_fab
);
4308 vaxc$errno
= status
;
4314 static struct passwd retpw
;
4322 /* copy these out first because if the username is 32 chars, the next
4323 section will overwrite the first byte of the UIC */
4324 retpw
.pw_uid
= up
->uaf$w_mem
;
4325 retpw
.pw_gid
= up
->uaf$w_grp
;
4327 /* I suppose this is not the best sytle, to possibly overwrite one
4328 byte beyond the end of the field, but what the heck... */
4329 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4330 while (ptr
[-1] == ' ')
4333 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4335 /* the rest of these are counted ascii strings */
4336 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4337 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4338 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4339 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4340 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4341 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4342 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4343 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4347 #else /* not READ_SYSUAF */
4348 static struct passwd retpw
;
4349 #endif /* not READ_SYSUAF */
4360 unsigned char * full
;
4361 #endif /* READ_SYSUAF */
4366 if ('a' <= *ptr
&& *ptr
<= 'z')
4371 if (!(up
= get_uaf_name (name
)))
4373 return cnv_uaf_pw (up
);
4375 if (strcmp (name
, getenv ("USER")) == 0)
4377 retpw
.pw_uid
= getuid ();
4378 retpw
.pw_gid
= getgid ();
4379 strcpy (retpw
.pw_name
, name
);
4380 if (full
= egetenv ("FULLNAME"))
4381 strcpy (retpw
.pw_gecos
, full
);
4383 *retpw
.pw_gecos
= '\0';
4384 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4385 *retpw
.pw_shell
= '\0';
4390 #endif /* not READ_SYSUAF */
4400 if (!(up
= get_uaf_uic (uid
)))
4402 return cnv_uaf_pw (up
);
4404 if (uid
== sys_getuid ())
4405 return getpwnam (egetenv ("USER"));
4408 #endif /* not READ_SYSUAF */
4411 /* return total address space available to the current process. This is
4412 the sum of the current p0 size, p1 size and free page table entries
4417 unsigned long free_pages
;
4418 unsigned long frep0va
;
4419 unsigned long frep1va
;
4422 item_code
= JPI$_FREPTECNT
;
4423 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4426 vaxc$errno
= status
;
4431 item_code
= JPI$_FREP0VA
;
4432 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4435 vaxc$errno
= status
;
4438 item_code
= JPI$_FREP1VA
;
4439 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4442 vaxc$errno
= status
;
4446 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4449 define_logical_name (varname
, string
)
4453 struct dsc$descriptor_s strdsc
=
4454 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4455 struct dsc$descriptor_s envdsc
=
4456 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4457 struct dsc$descriptor_s lnmdsc
=
4458 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4460 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4463 delete_logical_name (varname
)
4466 struct dsc$descriptor_s envdsc
=
4467 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4468 struct dsc$descriptor_s lnmdsc
=
4469 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4471 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4482 error ("execvp system call not implemented");
4490 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4491 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4492 char from_esn
[NAM$C_MAXRSS
];
4493 char to_esn
[NAM$C_MAXRSS
];
4495 from_fab
.fab$l_fna
= from
;
4496 from_fab
.fab$b_fns
= strlen (from
);
4497 from_fab
.fab$l_nam
= &from_nam
;
4498 from_fab
.fab$l_fop
= FAB$M_NAM
;
4500 from_nam
.nam$l_esa
= from_esn
;
4501 from_nam
.nam$b_ess
= sizeof from_esn
;
4503 to_fab
.fab$l_fna
= to
;
4504 to_fab
.fab$b_fns
= strlen (to
);
4505 to_fab
.fab$l_nam
= &to_nam
;
4506 to_fab
.fab$l_fop
= FAB$M_NAM
;
4508 to_nam
.nam$l_esa
= to_esn
;
4509 to_nam
.nam$b_ess
= sizeof to_esn
;
4511 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4517 if (status
== RMS$_DEV
)
4521 vaxc$errno
= status
;
4526 /* This function renames a file like `rename', but it strips
4527 the version number from the "to" filename, such that the "to" file is
4528 will always be a new version. It also sets the file protection once it is
4529 finished. The protection that we will use is stored in fab_final_pro,
4530 and was set when we did a creat_copy_attrs to create the file that we
4533 We could use the chmod function, but Eunichs uses 3 bits per user category
4534 to describe the protection, and VMS uses 4 (write and delete are separate
4535 bits). To maintain portability, the VMS implementation of `chmod' wires
4536 the W and D bits together. */
4539 static struct fibdef fib
; /* We need this initialized to zero */
4540 char vms_file_written
[NAM$C_MAXRSS
];
4543 rename_sans_version (from
,to
)
4550 struct FAB to_fab
= cc$rms_fab
;
4551 struct NAM to_nam
= cc$rms_nam
;
4552 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4553 struct dsc$descriptor fib_attr
[2]
4554 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4555 char to_esn
[NAM$C_MAXRSS
];
4557 $
DESCRIPTOR (disk
,to_esn
);
4559 to_fab
.fab$l_fna
= to
;
4560 to_fab
.fab$b_fns
= strlen (to
);
4561 to_fab
.fab$l_nam
= &to_nam
;
4562 to_fab
.fab$l_fop
= FAB$M_NAM
;
4564 to_nam
.nam$l_esa
= to_esn
;
4565 to_nam
.nam$b_ess
= sizeof to_esn
;
4567 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4569 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4570 *(to_nam
.nam$l_ver
) = '\0';
4572 stat
= rename (from
, to_esn
);
4576 strcpy (vms_file_written
, to_esn
);
4578 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4579 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4581 /* Now set the file protection to the correct value */
4582 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4584 /* Copy these fields into the fib */
4585 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4586 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4587 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4589 SYS$
CLOSE (&to_fab
, 0, 0);
4591 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4594 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4595 0, 0, 0, &fib_attr
, 0);
4598 stat
= SYS$
DASSGN (chan
);
4601 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4611 unsigned short fid
[3];
4612 char esa
[NAM$C_MAXRSS
];
4615 fab
.fab$l_fop
= FAB$M_OFP
;
4616 fab
.fab$l_fna
= file
;
4617 fab
.fab$b_fns
= strlen (file
);
4618 fab
.fab$l_nam
= &nam
;
4621 nam
.nam$l_esa
= esa
;
4622 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4624 status
= SYS$
PARSE (&fab
);
4625 if ((status
& 1) == 0)
4628 vaxc$errno
= status
;
4631 status
= SYS$
SEARCH (&fab
);
4632 if ((status
& 1) == 0)
4635 vaxc$errno
= status
;
4639 fid
[0] = nam
.nam$w_fid
[0];
4640 fid
[1] = nam
.nam$w_fid
[1];
4641 fid
[2] = nam
.nam$w_fid
[2];
4643 fab
.fab$l_fna
= new;
4644 fab
.fab$b_fns
= strlen (new);
4646 status
= SYS$
PARSE (&fab
);
4647 if ((status
& 1) == 0)
4650 vaxc$errno
= status
;
4654 nam
.nam$w_fid
[0] = fid
[0];
4655 nam
.nam$w_fid
[1] = fid
[1];
4656 nam
.nam$w_fid
[2] = fid
[2];
4658 nam
.nam$l_esa
= nam
.nam$l_name
;
4659 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4661 status
= SYS$
ENTER (&fab
);
4662 if ((status
& 1) == 0)
4665 vaxc$errno
= status
;
4675 printf ("%s not yet implemented\r\n", badfunc
);
4683 /* Arrange to return a range centered on zero. */
4684 return rand () - (1 << 30);
4695 /* Called from init_sys_modes. */
4700 /* If we're not on an HFT we shouldn't do any of this. We determine
4701 if we are on an HFT by trying to get an HFT error code. If this
4702 call fails, we're not on an HFT. */
4704 if (ioctl (0, HFQERROR
, &junk
) < 0)
4706 #else /* not IBMR2AIX */
4707 if (ioctl (0, HFQEIO
, 0) < 0)
4709 #endif /* not IBMR2AIX */
4711 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4712 as the rubout key's ASCII code. Here this is changed. The bug is that
4713 there's no way to determine the old mapping, so in reset_sys_modes
4714 we need to assume that the normal map had been present. Of course, this
4715 code also doesn't help if on a terminal emulator which doesn't understand
4719 struct hfkeymap keymap
;
4721 buf
.hf_bufp
= (char *)&keymap
;
4722 buf
.hf_buflen
= sizeof (keymap
);
4723 keymap
.hf_nkeys
= 2;
4724 keymap
.hfkey
[0].hf_kpos
= 15;
4725 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4727 keymap
.hfkey
[0].hf_keyidh
= '<';
4728 #else /* not IBMR2AIX */
4729 keymap
.hfkey
[0].hf_page
= '<';
4730 #endif /* not IBMR2AIX */
4731 keymap
.hfkey
[0].hf_char
= 127;
4732 keymap
.hfkey
[1].hf_kpos
= 15;
4733 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4735 keymap
.hfkey
[1].hf_keyidh
= '<';
4736 #else /* not IBMR2AIX */
4737 keymap
.hfkey
[1].hf_page
= '<';
4738 #endif /* not IBMR2AIX */
4739 keymap
.hfkey
[1].hf_char
= 127;
4740 hftctl (0, HFSKBD
, &buf
);
4742 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
4744 line_ins_del_ok
= char_ins_del_ok
= 0;
4747 /* Reset the rubout key to backspace. */
4752 struct hfkeymap keymap
;
4756 if (ioctl (0, HFQERROR
, &junk
) < 0)
4758 #else /* not IBMR2AIX */
4759 if (ioctl (0, HFQEIO
, 0) < 0)
4761 #endif /* not IBMR2AIX */
4763 buf
.hf_bufp
= (char *)&keymap
;
4764 buf
.hf_buflen
= sizeof (keymap
);
4765 keymap
.hf_nkeys
= 2;
4766 keymap
.hfkey
[0].hf_kpos
= 15;
4767 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4769 keymap
.hfkey
[0].hf_keyidh
= '<';
4770 #else /* not IBMR2AIX */
4771 keymap
.hfkey
[0].hf_page
= '<';
4772 #endif /* not IBMR2AIX */
4773 keymap
.hfkey
[0].hf_char
= 8;
4774 keymap
.hfkey
[1].hf_kpos
= 15;
4775 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4777 keymap
.hfkey
[1].hf_keyidh
= '<';
4778 #else /* not IBMR2AIX */
4779 keymap
.hfkey
[1].hf_page
= '<';
4780 #endif /* not IBMR2AIX */
4781 keymap
.hfkey
[1].hf_char
= 8;
4782 hftctl (0, HFSKBD
, &buf
);