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 */
48 #endif /* not WINDOWSNT */
51 #define sys_close close
58 #else /* `open' is a macro */
60 #endif /* `open' is a macro */
62 /* Does anyone other than VMS need this? */
64 #define sys_fwrite fwrite
74 #include <sys/types.h>
78 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
82 #include <sys/param.h>
107 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
111 #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG)
112 because the vms compiler doesn't grok `defined' */
120 #endif /* not 4.1 bsd */
123 #include <sys/ioctl.h>
128 #ifdef BROKEN_TIOCGWINSZ
134 #include <sys/utsname.h>
136 #ifndef MEMORY_IN_STRING_H
139 #if defined (TIOCGWINSZ) || defined (ISC4_0)
141 #include <sys/sioctl.h>
144 #include <sys/stream.h>
145 #include <sys/ptem.h>
147 #endif /* TIOCGWINSZ or ISC4_0 */
150 extern int quit_char
;
154 #include "termhooks.h"
155 #include "termchar.h"
156 #include "termopts.h"
157 #include "dispextern.h"
162 /* In process.h which conflicts with the local copy. */
164 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
165 int _CRTAPI1
_getpid (void);
168 #ifdef NONSYSTEM_DIR_LIBRARY
170 #endif /* NONSYSTEM_DIR_LIBRARY */
172 #include "syssignal.h"
179 #ifndef HAVE_STRUCT_UTIMBUF
180 /* We want to use utime rather than utimes, but we couldn't find the
181 structure declaration. We'll use the traditional one. */
189 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
195 #define LNOFLSH 0100000
198 static int baud_convert
[] =
203 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
204 1800, 2400, 4800, 9600, 19200, 38400
210 /* The file descriptor for Emacs's input terminal.
211 Under Unix, this is normally zero except when using X;
212 under VMS, we place the input channel number here. */
215 /* Specify a different file descriptor for further input operations. */
224 /* Discard pending input on descriptor input_fd. */
229 struct emacs_tty buf
;
234 /* Discarding input is not safe when the input could contain
235 replies from the X server. So don't do it. */
236 if (read_socket_hook
)
241 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
242 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
248 ioctl (input_fd
, TIOCFLUSH
, &zero
);
250 #else /* not Apollo */
251 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
252 while (dos_keyread () != -1)
254 #else /* not MSDOS */
255 EMACS_GET_TTY (input_fd
, &buf
);
256 EMACS_SET_TTY (input_fd
, &buf
, 0);
257 #endif /* not MSDOS */
258 #endif /* not Apollo */
260 #endif /* not WINDOWSNT */
265 /* Arrange for character C to be read as the next input from
271 if (read_socket_hook
)
274 /* Should perhaps error if in batch mode */
276 ioctl (input_fd
, TIOCSTI
, &c
);
277 #else /* no TIOCSTI */
278 error ("Cannot stuff terminal input characters in this version of Unix");
279 #endif /* no TIOCSTI */
292 #else /* not DOS_NT */
296 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
297 &sg
.class, 12, 0, 0, 0, 0 );
298 ospeed
= sg
.xmit_baud
;
304 tcgetattr (input_fd
, &sg
);
305 ospeed
= cfgetospeed (&sg
);
306 #if defined (USE_GETOBAUD) && defined (getobaud)
307 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
309 ospeed
= getobaud (sg
.c_cflag
);
311 #else /* neither VMS nor TERMIOS */
317 tcgetattr (input_fd
, &sg
);
319 ioctl (input_fd
, TCGETA
, &sg
);
321 ospeed
= sg
.c_cflag
& CBAUD
;
322 #else /* neither VMS nor TERMIOS nor TERMIO */
325 sg
.sg_ospeed
= B9600
;
326 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
328 ospeed
= sg
.sg_ospeed
;
329 #endif /* not HAVE_TERMIO */
330 #endif /* not HAVE_TERMIOS */
332 #endif /* not DOS_NT */
335 baud_rate
= (ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
336 ? baud_convert
[ospeed
] : 9600);
342 set_exclusive_use (fd
)
346 ioctl (fd
, FIOCLEX
, 0);
348 /* Ok to do nothing if this feature does not exist */
353 wait_without_blocking ()
356 wait3 (0, WNOHANG
| WUNTRACED
, 0);
358 croak ("wait_without_blocking");
360 synch_process_alive
= 0;
363 #endif /* not subprocesses */
365 int wait_debugging
; /* Set nonzero to make following function work under dbx
366 (at least for bsd). */
369 wait_for_termination_signal ()
372 /* Wait for subprocess with process id `pid' to terminate and
373 make sure it will get eliminated (not remain forever as a zombie) */
375 wait_for_termination (pid
)
384 status
= SYS$
FORCEX (&pid
, 0, 0);
387 #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5))
388 /* Note that kill returns -1 even if the process is just a zombie now.
389 But inevitably a SIGCHLD interrupt should be generated
390 and child_sig will do wait3 and make the process go away. */
391 /* There is some indication that there is a bug involved with
392 termination of subprocesses, perhaps involving a kernel bug too,
393 but no idea what it is. Just as a hunch we signal SIGCHLD to see
394 if that causes the problem to go away or get worse. */
395 sigsetmask (sigmask (SIGCHLD
));
396 if (0 > kill (pid
, 0))
398 sigsetmask (SIGEMPTYMASK
);
399 kill (getpid (), SIGCHLD
);
405 sigpause (SIGEMPTYMASK
);
406 #else /* not BSD, and not HPUX version >= 6 */
407 #if defined (UNIPLUS)
408 if (0 > kill (pid
, 0))
411 #else /* neither BSD nor UNIPLUS: random sysV */
412 #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */
413 sigblock (sigmask (SIGCHLD
));
414 if (0 > kill (pid
, 0))
416 sigunblock (sigmask (SIGCHLD
));
419 sigpause (SIGEMPTYMASK
);
420 #else /* not POSIX_SIGNALS */
421 #ifdef HAVE_SYSV_SIGPAUSE
423 if (0 > kill (pid
, 0))
429 #else /* not HAVE_SYSV_SIGPAUSE */
433 #else /* not WINDOWSNT */
434 if (0 > kill (pid
, 0))
436 /* Using sleep instead of pause avoids timing error.
437 If the inferior dies just before the sleep,
438 we lose just one second. */
440 #endif /* not WINDOWSNT */
441 #endif /* not HAVE_SYSV_SIGPAUSE */
442 #endif /* not POSIX_SIGNALS */
443 #endif /* not UNIPLUS */
444 #endif /* not BSD, and not HPUX version >= 6 */
446 #else /* not subprocesses */
448 if (kill (pid
, 0) < 0)
454 if (status
== pid
|| status
== -1)
457 #endif /* not subprocesses */
464 * flush any pending output
465 * (may flush input as well; it does not matter the way we use it)
468 flush_pending_output (channel
)
472 /* If we try this, we get hit with SIGTTIN, because
473 the child's tty belongs to the child's pgrp. */
476 ioctl (channel
, TCFLSH
, 1);
480 /* 3rd arg should be ignored
481 but some 4.2 kernels actually want the address of an int
482 and nonzero means something different. */
483 ioctl (channel
, TIOCFLUSH
, &zero
);
490 /* Set up the terminal at the other end of a pseudo-terminal that
491 we will be controlling an inferior through.
492 It should not echo or do line-editing, since that is done
493 in Emacs. No padding needed for insertion into an Emacs buffer. */
495 child_setup_tty (out
)
501 EMACS_GET_TTY (out
, &s
);
503 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
504 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
505 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
507 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
508 /* No output delays */
510 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
511 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
513 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
516 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
518 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
520 /* Said to be unnecessary: */
521 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
522 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
525 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
526 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
527 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
528 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
531 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
535 /* AIX enhanced edit loses NULs, so disable it */
538 s
.main
.c_iflag
&= ~ASCEDIT
;
540 /* Also, PTY overloads NUL and BREAK.
541 don't ignore break, but don't signal either, so it looks like NUL. */
542 s
.main
.c_iflag
&= ~IGNBRK
;
543 s
.main
.c_iflag
&= ~BRKINT
;
544 /* QUIT and INTR work better as signals, so disable character forms */
545 s
.main
.c_cc
[VINTR
] = 0377;
546 #ifdef SIGNALS_VIA_CHARACTERS
547 /* the QUIT and INTR character are used in process_send_signal
548 so set them here to something useful. */
549 if (s
.main
.c_cc
[VQUIT
] == 0377)
550 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
551 if (s
.main
.c_cc
[VINTR
] == 0377)
552 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
553 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
554 /* QUIT and INTR work better as signals, so disable character forms */
555 s
.main
.c_cc
[VQUIT
] = 0377;
556 s
.main
.c_cc
[VINTR
] = 0377;
557 s
.main
.c_lflag
&= ~ISIG
;
558 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
559 s
.main
.c_cc
[VEOL
] = 0377;
560 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
563 #else /* not HAVE_TERMIO */
565 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
567 s
.main
.sg_flags
|= LPASS8
;
568 s
.main
.sg_erase
= 0377;
569 s
.main
.sg_kill
= 0377;
570 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
572 #endif /* not HAVE_TERMIO */
574 EMACS_SET_TTY (out
, &s
, 0);
583 ioctl (out
, FIOASYNC
, &zero
);
586 #endif /* not DOS_NT */
590 #endif /* subprocesses */
592 /* Record a signal code and the handler for it. */
596 SIGTYPE (*handler
) ();
599 /* Suspend the Emacs process; give terminal to its superior. */
604 /* "Foster" parentage allows emacs to return to a subprocess that attached
605 to the current emacs as a cheaper than starting a whole new process. This
606 is set up by KEPTEDITOR.COM. */
607 unsigned long parent_id
, foster_parent_id
;
610 fpid_string
= getenv ("EMACS_PARENT_PID");
611 if (fpid_string
!= NULL
)
613 sscanf (fpid_string
, "%x", &foster_parent_id
);
614 if (foster_parent_id
!= 0)
615 parent_id
= foster_parent_id
;
617 parent_id
= getppid ();
620 parent_id
= getppid ();
622 xfree (fpid_string
); /* On VMS, this was malloc'd */
624 if (parent_id
&& parent_id
!= 0xffffffff)
626 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
627 int status
= LIB$
ATTACH (&parent_id
) & 1;
628 signal (SIGINT
, oldsig
);
637 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
638 d_prompt
.a
= "Emacs: "; /* Just a reminder */
639 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
644 #if defined(SIGTSTP) && !defined(MSDOS)
647 int pgrp
= EMACS_GETPGRP (0);
648 EMACS_KILLPG (pgrp
, SIGTSTP
);
651 #else /* No SIGTSTP */
652 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
653 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
654 kill (getpid (), SIGQUIT
);
656 #else /* No SIGTSTP or USG_JOBCTRL */
658 /* On a system where suspending is not implemented,
659 instead fork a subshell and let it talk directly to the terminal
663 #endif /* no USG_JOBCTRL */
664 #endif /* no SIGTSTP */
668 /* Fork a subshell. */
673 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
675 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
678 struct save_signal saved_handlers
[5];
680 unsigned char *str
= 0;
683 saved_handlers
[0].code
= SIGINT
;
684 saved_handlers
[1].code
= SIGQUIT
;
685 saved_handlers
[2].code
= SIGTERM
;
687 saved_handlers
[3].code
= SIGIO
;
688 saved_handlers
[4].code
= 0;
690 saved_handlers
[3].code
= 0;
693 /* Mentioning current_buffer->buffer would mean including buffer.h,
694 which somehow wedges the hp compiler. So instead... */
696 dir
= intern ("default-directory");
697 if (NILP (Fboundp (dir
)))
699 dir
= Fsymbol_value (dir
);
703 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
704 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
705 len
= XSTRING (dir
)->size
;
706 bcopy (XSTRING (dir
)->data
, str
, len
);
707 if (str
[len
- 1] != '/') str
[len
++] = '/';
713 #else /* not WINDOWSNT */
717 error ("Can't spawn subshell");
719 #endif /* not WINDOWSNT */
723 #ifdef MSDOS /* MW, Aug 1993 */
726 sh
= (char *) egetenv ("SHELL");
730 /* Use our buffer's default directory for the subshell. */
735 close_process_descs (); /* Close Emacs's pipes/ptys */
738 #ifdef SET_EMACS_PRIORITY
740 extern int emacs_priority
;
742 if (emacs_priority
< 0)
743 nice (-emacs_priority
);
747 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
751 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
752 #else /* not MSDOS */
756 /* Waits for process completion */
757 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
759 write (1, "Can't execute subshell", 22);
762 #else /* not WINDOWSNT */
764 write (1, "Can't execute subshell", 22);
766 #endif /* not WINDOWSNT */
767 #endif /* not MSDOS */
770 save_signal_handlers (saved_handlers
);
771 synch_process_alive
= 1;
772 wait_for_termination (pid
);
773 restore_signal_handlers (saved_handlers
);
777 save_signal_handlers (saved_handlers
)
778 struct save_signal
*saved_handlers
;
780 while (saved_handlers
->code
)
782 saved_handlers
->handler
783 = (SIGTYPE (*) ()) signal (saved_handlers
->code
, SIG_IGN
);
788 restore_signal_handlers (saved_handlers
)
789 struct save_signal
*saved_handlers
;
791 while (saved_handlers
->code
)
793 signal (saved_handlers
->code
, saved_handlers
->handler
);
806 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
807 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
809 interrupts_deferred
= 0;
817 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
821 if (read_socket_hook
)
825 sigunblock (sigmask (SIGWINCH
));
827 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
829 interrupts_deferred
= 0;
834 if (read_socket_hook
)
838 sigblock (sigmask (SIGWINCH
));
840 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
841 interrupts_deferred
= 1;
844 #else /* no FASYNC */
845 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
851 if (read_socket_hook
)
854 ioctl (input_fd
, FIOASYNC
, &on
);
855 interrupts_deferred
= 0;
862 if (read_socket_hook
)
865 ioctl (input_fd
, FIOASYNC
, &off
);
866 interrupts_deferred
= 1;
869 #else /* not FASYNC, not STRIDE */
880 if (read_socket_hook
)
884 sigaddset(&st
, SIGIO
);
885 ioctl (input_fd
, FIOASYNC
, &on
);
886 interrupts_deferred
= 0;
887 sigprocmask(SIG_UNBLOCK
, &st
, (sigset_t
*)0);
894 if (read_socket_hook
)
897 ioctl (input_fd
, FIOASYNC
, &off
);
898 interrupts_deferred
= 1;
905 if (read_socket_hook
)
908 croak ("request_sigio");
913 if (read_socket_hook
)
916 croak ("unrequest_sigio");
924 /* Saving and restoring the process group of Emacs's terminal. */
928 /* The process group of which Emacs was a member when it initially
931 If Emacs was in its own process group (i.e. inherited_pgroup ==
932 getpid ()), then we know we're running under a shell with job
933 control (Emacs would never be run as part of a pipeline).
936 If Emacs was not in its own process group, then we know we're
937 running under a shell (or a caller) that doesn't know how to
938 separate itself from Emacs (like sh). Emacs must be in its own
939 process group in order to receive SIGIO correctly. In this
940 situation, we put ourselves in our own pgroup, forcibly set the
941 tty's pgroup to our pgroup, and make sure to restore and reinstate
942 the tty's pgroup just like any other terminal setting. If
943 inherited_group was not the tty's pgroup, then we'll get a
944 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
945 it goes foreground in the future, which is what should happen. */
946 int inherited_pgroup
;
948 /* Split off the foreground process group to Emacs alone.
949 When we are in the foreground, but not started in our own process
950 group, redirect the TTY to point to our own process group. We need
951 to be in our own process group to receive SIGIO properly. */
952 narrow_foreground_group ()
956 setpgrp (0, inherited_pgroup
);
957 if (inherited_pgroup
!= me
)
958 EMACS_SET_TTY_PGRP (input_fd
, &me
);
962 /* Set the tty to our original foreground group. */
963 widen_foreground_group ()
965 if (inherited_pgroup
!= getpid ())
966 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
967 setpgrp (0, inherited_pgroup
);
970 #endif /* BSD_PGRPS */
972 /* Getting and setting emacs_tty structures. */
974 /* Set *TC to the parameters associated with the terminal FD.
975 Return zero if all's well, or -1 if we ran into an error we
976 couldn't deal with. */
978 emacs_get_tty (fd
, settings
)
980 struct emacs_tty
*settings
;
982 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
984 /* We have those nifty POSIX tcmumbleattr functions. */
985 if (tcgetattr (fd
, &settings
->main
) < 0)
990 /* The SYSV-style interface? */
991 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
996 /* Vehemently Monstrous System? :-) */
997 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
998 &settings
->main
.class, 12, 0, 0, 0, 0)
1004 /* I give up - I hope you have the BSD ioctls. */
1005 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1007 #endif /* not DOS_NT */
1012 /* Suivant - Do we have to get struct ltchars data? */
1014 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1018 /* How about a struct tchars and a wordful of lmode bits? */
1020 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1021 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1025 /* We have survived the tempest. */
1030 /* Set the parameters of the tty on FD according to the contents of
1031 *SETTINGS. If WAITP is non-zero, we wait for all queued output to
1032 be written before making the change; otherwise, we forget any
1033 queued input and make the change immediately.
1034 Return 0 if all went well, and -1 if anything failed. */
1036 emacs_set_tty (fd
, settings
, waitp
)
1038 struct emacs_tty
*settings
;
1041 /* Set the primary parameters - baud rate, character size, etcetera. */
1044 /* We have those nifty POSIX tcmumbleattr functions.
1045 William J. Smith <wjs@wiis.wang.com> writes:
1046 "POSIX 1003.1 defines tcsetattr() to return success if it was
1047 able to perform any of the requested actions, even if some
1048 of the requested actions could not be performed.
1049 We must read settings back to ensure tty setup properly.
1050 AIX requires this to keep tty from hanging occasionally." */
1051 /* This make sure that we don't loop indefinitely in here. */
1052 for (i
= 0 ; i
< 10 ; i
++)
1053 if (tcsetattr (fd
, waitp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1064 /* Get the current settings, and see if they're what we asked for. */
1065 tcgetattr (fd
, &new);
1066 /* We cannot use memcmp on the whole structure here because under
1067 * aix386 the termios structure has some reserved field that may
1070 if ( new.c_iflag
== settings
->main
.c_iflag
1071 && new.c_oflag
== settings
->main
.c_oflag
1072 && new.c_cflag
== settings
->main
.c_cflag
1073 && new.c_lflag
== settings
->main
.c_lflag
1074 && memcmp(new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1082 /* The SYSV-style interface? */
1083 if (ioctl (fd
, waitp
? TCSETAW
: TCSETAF
, &settings
->main
) < 0)
1088 /* Vehemently Monstrous System? :-) */
1089 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1090 &settings
->main
.class, 12, 0, 0, 0, 0)
1096 /* I give up - I hope you have the BSD ioctls. */
1097 if (ioctl (fd
, (waitp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1099 #endif /* not DOS_NT */
1105 /* Suivant - Do we have to get struct ltchars data? */
1107 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1111 /* How about a struct tchars and a wordful of lmode bits? */
1113 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1114 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1118 /* We have survived the tempest. */
1123 /* The initial tty mode bits */
1124 struct emacs_tty old_tty
;
1126 int term_initted
; /* 1 if outer tty status has been recorded */
1129 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1134 #ifndef F_SETOWN_BUG
1136 int old_fcntl_owner
;
1137 #endif /* F_SETOWN */
1138 #endif /* F_SETOWN_BUG */
1140 /* This may also be defined in stdio,
1141 but if so, this does no harm,
1142 and using the same name avoids wasting the other one's space. */
1144 #if defined (USG) || defined (DGUX)
1145 unsigned char _sobuf
[BUFSIZ
+8];
1147 char _sobuf
[BUFSIZ
];
1151 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1154 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1159 struct emacs_tty tty
;
1163 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1164 extern int (*interrupt_signal
) ();
1173 input_ef
= get_kbd_event_flag ();
1174 /* LIB$GET_EF (&input_ef); */
1175 SYS$
CLREF (input_ef
);
1176 waiting_for_ast
= 0;
1178 timer_ef
= get_timer_event_flag ();
1179 /* LIB$GET_EF (&timer_ef); */
1180 SYS$
CLREF (timer_ef
);
1184 LIB$
GET_EF (&process_ef
);
1185 SYS$
CLREF (process_ef
);
1187 if (input_ef
/ 32 != process_ef
/ 32)
1188 croak ("Input and process event flags in different clusters.");
1190 if (input_ef
/ 32 != timer_ef
/ 32)
1191 croak ("Input and timer event flags in different clusters.");
1193 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1194 ((unsigned) 1 << (process_ef
% 32));
1196 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1197 ((unsigned) 1 << (timer_ef
% 32));
1199 sys_access_reinit ();
1201 #endif /* not VMS */
1204 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1205 narrow_foreground_group ();
1208 #ifdef HAVE_X_WINDOWS
1209 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1210 needs the initialization code below. */
1211 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1214 EMACS_GET_TTY (input_fd
, &old_tty
);
1218 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1220 /* This allows meta to be sent on 8th bit. */
1221 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1223 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1224 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1226 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1228 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1229 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1231 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1233 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1236 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1238 tty
.main
.c_iflag
&= ~IXANY
;
1242 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1243 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1245 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1249 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1250 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1253 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1254 /* Set up C-g for both SIGQUIT and SIGINT.
1255 We don't know which we will get, but we handle both alike
1256 so which one it really gives us does not matter. */
1257 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1258 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1259 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1261 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1264 #if defined (mips) || defined (HAVE_TCATTR)
1266 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1269 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1270 #endif /* V_DSUSP */
1271 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1272 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1275 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1278 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1279 #endif /* VREPRINT */
1281 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1282 #endif /* VWERASE */
1284 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1285 #endif /* VDISCARD */
1287 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1290 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1292 #endif /* mips or HAVE_TCATTR */
1293 #ifdef SET_LINE_DISCIPLINE
1294 /* Need to explicitely request TERMIODISC line discipline or
1295 Ultrix's termios does not work correctly. */
1296 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1300 /* AIX enhanced edit loses NULs, so disable it. */
1301 tty
.main
.c_line
= 0;
1302 tty
.main
.c_iflag
&= ~ASCEDIT
;
1304 tty
.main
.c_cc
[VSTRT
] = 255;
1305 tty
.main
.c_cc
[VSTOP
] = 255;
1306 tty
.main
.c_cc
[VSUSP
] = 255;
1307 tty
.main
.c_cc
[VDSUSP
] = 255;
1308 #endif /* IBMR2AIX */
1309 /* Also, PTY overloads NUL and BREAK.
1310 don't ignore break, but don't signal either, so it looks like NUL.
1311 This really serves a purpose only if running in an XTERM window
1312 or via TELNET or the like, but does no harm elsewhere. */
1313 tty
.main
.c_iflag
&= ~IGNBRK
;
1314 tty
.main
.c_iflag
&= ~BRKINT
;
1316 #else /* if not HAVE_TERMIO */
1318 tty
.main
.tt_char
|= TT$M_NOECHO
;
1320 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1322 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1324 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1325 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1326 #else /* not VMS (BSD, that is) */
1328 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1330 tty
.main
.sg_flags
|= ANYP
;
1331 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1332 #endif /* not DOS_NT */
1333 #endif /* not VMS (BSD, that is) */
1334 #endif /* not HAVE_TERMIO */
1336 /* If going to use CBREAK mode, we must request C-g to interrupt
1337 and turn off start and stop chars, etc. If not going to use
1338 CBREAK mode, do this anyway so as to turn off local flow
1339 control for user coming over network on 4.2; in this case,
1340 only t_stopc and t_startc really matter. */
1343 /* Note: if not using CBREAK mode, it makes no difference how we
1345 tty
.tchars
= new_tchars
;
1346 tty
.tchars
.t_intrc
= quit_char
;
1349 tty
.tchars
.t_startc
= '\021';
1350 tty
.tchars
.t_stopc
= '\023';
1353 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1355 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1356 anything, and leaving it in breaks the meta key. Go figure. */
1357 tty
.lmode
&= ~LLITOUT
;
1364 #endif /* HAVE_TCHARS */
1365 #endif /* not HAVE_TERMIO */
1368 tty
.ltchars
= new_ltchars
;
1369 #endif /* HAVE_LTCHARS */
1370 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1372 internal_terminal_init ();
1376 EMACS_SET_TTY (input_fd
, &tty
, 0);
1378 /* This code added to insure that, if flow-control is not to be used,
1379 we have an unlocked terminal at the start. */
1382 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1386 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1390 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1391 if (!flow_control
) tcflow (input_fd
, TCOON
);
1398 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1399 to be only LF. This is the way that is done. */
1402 if (ioctl (1, HFTGETID
, &tty
) != -1)
1403 write (1, "\033[20l", 5);
1409 /* Appears to do nothing when in PASTHRU mode.
1410 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1411 interrupt_signal, oob_chars, 0, 0, 0, 0);
1413 queue_kbd_input (0);
1418 #ifndef F_SETOWN_BUG
1419 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1421 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1423 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1424 fcntl (input_fd
, F_SETOWN
, getpid ());
1425 init_sigio (input_fd
);
1427 #endif /* F_GETOWN */
1428 #endif /* F_SETOWN_BUG */
1429 #endif /* F_SETFL */
1432 if (interrupt_input
)
1433 init_sigio (input_fd
);
1436 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1440 /* This symbol is defined on recent USG systems.
1441 Someone says without this call USG won't really buffer the file
1442 even with a call to setbuf. */
1443 setvbuf (stdout
, _sobuf
, _IOFBF
, sizeof _sobuf
);
1445 setbuf (stdout
, _sobuf
);
1447 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1448 set_terminal_modes ();
1450 if (term_initted
&& no_redraw_on_reenter
)
1452 if (display_completed
)
1453 direct_output_forward_char (0);
1459 if (FRAMEP (Vterminal_frame
))
1460 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1467 /* Return nonzero if safe to use tabs in output.
1468 At the time this is called, init_sys_modes has not been done yet. */
1472 struct emacs_tty tty
;
1474 EMACS_GET_TTY (input_fd
, &tty
);
1475 return EMACS_TTY_TABS_OK (&tty
);
1478 /* Get terminal size from system.
1479 Store number of lines into *HEIGHTP and width into *WIDTHP.
1480 We store 0 if there's no valid information. */
1482 get_frame_size (widthp
, heightp
)
1483 int *widthp
, *heightp
;
1489 struct winsize size
;
1491 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1492 *widthp
= *heightp
= 0;
1495 *widthp
= size
.ws_col
;
1496 *heightp
= size
.ws_row
;
1502 /* SunOS - style. */
1503 struct ttysize size
;
1505 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1506 *widthp
= *heightp
= 0;
1509 *widthp
= size
.ts_cols
;
1510 *heightp
= size
.ts_lines
;
1516 struct sensemode tty
;
1518 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1519 &tty
.class, 12, 0, 0, 0, 0);
1520 *widthp
= tty
.scr_wid
;
1521 *heightp
= tty
.scr_len
;
1525 *widthp
= ScreenCols ();
1526 *heightp
= ScreenRows ();
1527 #else /* system doesn't know size */
1532 #endif /* not VMS */
1533 #endif /* not SunOS-style */
1534 #endif /* not BSD-style */
1537 /* Set the logical window size associated with descriptor FD
1538 to HEIGHT and WIDTH. This is used mainly with ptys. */
1541 set_window_size (fd
, height
, width
)
1542 int fd
, height
, width
;
1547 struct winsize size
;
1548 size
.ws_row
= height
;
1549 size
.ws_col
= width
;
1551 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1552 return 0; /* error */
1559 /* SunOS - style. */
1560 struct ttysize size
;
1561 size
.ts_lines
= height
;
1562 size
.ts_cols
= width
;
1564 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1570 #endif /* not SunOS-style */
1571 #endif /* not BSD-style */
1575 /* Prepare the terminal for exiting Emacs; move the cursor to the
1576 bottom of the frame, turn off interrupt-driven I/O, etc. */
1586 #ifdef HAVE_X_WINDOWS
1587 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1588 needs the clean-up code below. */
1589 if (read_socket_hook
|| !EQ (Vwindow_system
, Qnil
))
1592 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1594 if (!EQ (Vwindow_system
, Qnil
))
1596 /* Change to grey on white. */
1602 clear_end_of_line (FRAME_WIDTH (selected_frame
));
1603 /* clear_end_of_line may move the cursor */
1604 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1605 #if defined (IBMR2AIX) && defined (AIXHFT)
1607 /* HFT devices normally use ^J as a LF/CR. We forced it to
1608 do the LF only. Now, we need to reset it. */
1611 if (ioctl (1, HFTGETID
, &tty
) != -1)
1612 write (1, "\033[20h", 5);
1616 reset_terminal_modes ();
1620 /* Avoid possible loss of output when changing terminal modes. */
1621 fsync (fileno (stdout
));
1626 #ifndef F_SETOWN_BUG
1627 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1628 if (interrupt_input
)
1631 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1633 #endif /* F_SETOWN */
1634 #endif /* F_SETOWN_BUG */
1636 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1638 #endif /* F_SETFL */
1640 if (interrupt_input
)
1644 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1647 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1651 #ifdef SET_LINE_DISCIPLINE
1652 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1653 A different old line discipline is therefore not restored, yet.
1654 Restore the old line discipline by hand. */
1655 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1663 widen_foreground_group ();
1669 /* Set up the proper status flags for use of a pty. */
1674 /* I'm told that TOICREMOTE does not mean control chars
1675 "can't be sent" but rather that they don't have
1676 input-editing or signaling effects.
1677 That should be good, because we have other ways
1678 to do those things in Emacs.
1679 However, telnet mode seems not to work on 4.2.
1680 So TIOCREMOTE is turned off now. */
1682 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1683 will hang. In particular, the "timeout" feature (which
1684 causes a read to return if there is no data available)
1685 does this. Also it is known that telnet mode will hang
1686 in such a way that Emacs must be stopped (perhaps this
1687 is the same problem).
1689 If TIOCREMOTE is turned off, then there is a bug in
1690 hp-ux which sometimes loses data. Apparently the
1691 code which blocks the master process when the internal
1692 buffer fills up does not work. Other than this,
1693 though, everything else seems to work fine.
1695 Since the latter lossage is more benign, we may as well
1696 lose that way. -- cph */
1701 ioctl (fd
, FIONBIO
, &on
);
1706 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1707 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1708 /* cause EMACS not to die when it should, i.e., when its own controlling */
1709 /* tty goes away. I've complained to the AIX developers, and they may */
1710 /* change this behavior, but I'm not going to hold my breath. */
1711 signal (SIGHUP
, SIG_IGN
);
1714 #endif /* HAVE_PTYS */
1718 /* Assigning an input channel is done at the start of Emacs execution.
1719 This is called each time Emacs is resumed, also, but does nothing
1720 because input_chain is no longer zero. */
1728 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1734 /* Deassigning the input channel is done before exiting. */
1738 return SYS$
DASSGN (input_fd
);
1743 /* Request reading one character into the keyboard buffer.
1744 This is done as soon as the buffer becomes empty. */
1749 extern kbd_input_ast ();
1751 waiting_for_ast
= 0;
1753 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1754 &input_iosb
, kbd_input_ast
, 1,
1755 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1760 /* Ast routine that is called when keyboard input comes in
1761 in accord with the SYS$QIO above. */
1765 register int c
= -1;
1766 int old_errno
= errno
;
1767 extern EMACS_TIME
*input_available_clear_time
;
1769 if (waiting_for_ast
)
1770 SYS$
SETEF (input_ef
);
1771 waiting_for_ast
= 0;
1774 if (input_count
== 25)
1776 printf ("Ast # %d,", input_count
);
1777 printf (" iosb = %x, %x, %x, %x",
1778 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1781 if (input_iosb
.offset
)
1785 printf (", char = 0%o", c
);
1797 struct input_event e
;
1798 e
.kind
= ascii_keystroke
;
1799 XSETINT (e
.code
, c
);
1800 XSETFRAME (e
.frame_or_window
, selected_frame
);
1801 kbd_buffer_store_event (&e
);
1803 if (input_available_clear_time
)
1804 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1808 /* Wait until there is something in kbd_buffer. */
1810 wait_for_kbd_input ()
1812 extern int have_process_input
, process_exited
;
1814 /* If already something, avoid doing system calls. */
1815 if (detect_input_pending ())
1819 /* Clear a flag, and tell ast routine above to set it. */
1820 SYS$
CLREF (input_ef
);
1821 waiting_for_ast
= 1;
1822 /* Check for timing error: ast happened while we were doing that. */
1823 if (!detect_input_pending ())
1825 /* No timing error: wait for flag to be set. */
1826 set_waiting_for_input (0);
1827 SYS$
WFLOR (input_ef
, input_eflist
);
1828 clear_waiting_for_input (0);
1829 if (!detect_input_pending ())
1830 /* Check for subprocess input availability */
1832 int dsp
= have_process_input
|| process_exited
;
1834 SYS$
CLREF (process_ef
);
1835 if (have_process_input
)
1836 process_command_input ();
1841 update_mode_lines
++;
1842 prepare_menu_bars ();
1843 redisplay_preserve_echo_area ();
1847 waiting_for_ast
= 0;
1850 /* Get rid of any pending QIO, when we are about to suspend
1851 or when we want to throw away pending input.
1852 We wait for a positive sign that the AST routine has run
1853 and therefore there is no I/O request queued when we return.
1854 SYS$SETAST is used to avoid a timing error. */
1859 printf ("At end_kbd_input.\n");
1863 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1865 SYS$
CANCEL (input_fd
);
1870 /* Clear a flag, and tell ast routine above to set it. */
1871 SYS$
CLREF (input_ef
);
1872 waiting_for_ast
= 1;
1874 SYS$
CANCEL (input_fd
);
1876 SYS$
WAITFR (input_ef
);
1877 waiting_for_ast
= 0;
1880 /* Wait for either input available or time interval expiry. */
1882 input_wait_timeout (timeval
)
1883 int timeval
; /* Time to wait, in seconds */
1886 static int zero
= 0;
1887 static int large
= -10000000;
1889 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1891 /* If already something, avoid doing system calls. */
1892 if (detect_input_pending ())
1896 /* Clear a flag, and tell ast routine above to set it. */
1897 SYS$
CLREF (input_ef
);
1898 waiting_for_ast
= 1;
1899 /* Check for timing error: ast happened while we were doing that. */
1900 if (!detect_input_pending ())
1902 /* No timing error: wait for flag to be set. */
1904 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1905 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1907 waiting_for_ast
= 0;
1910 /* The standard `sleep' routine works some other way
1911 and it stops working if you have ever quit out of it.
1912 This one continues to work. */
1918 static int zero
= 0;
1919 static int large
= -10000000;
1921 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1924 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1925 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
1941 croak ("request sigio");
1946 croak ("unrequest sigio");
1951 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
1956 #ifndef SYSTEM_MALLOC
1963 /* Some systems that cannot dump also cannot implement these. */
1966 * Return the address of the start of the text segment prior to
1967 * doing an unexec. After unexec the return value is undefined.
1968 * See crt0.c for further explanation and _start.
1972 #ifndef HAVE_TEXT_START
1977 return ((char *) TEXT_START
);
1981 return ((char *) csrt
);
1982 #else /* not GOULD */
1983 extern int _start ();
1984 return ((char *) _start
);
1986 #endif /* TEXT_START */
1988 #endif /* not HAVE_TEXT_START */
1991 * Return the address of the start of the data segment prior to
1992 * doing an unexec. After unexec the return value is undefined.
1993 * See crt0.c for further information and definition of data_start.
1995 * Apparently, on BSD systems this is etext at startup. On
1996 * USG systems (swapping) this is highly mmu dependent and
1997 * is also dependent on whether or not the program is running
1998 * with shared text. Generally there is a (possibly large)
1999 * gap between end of text and start of data with shared text.
2001 * On Uniplus+ systems with shared text, data starts at a
2002 * fixed address. Each port (from a given oem) is generally
2003 * different, and the specific value of the start of data can
2004 * be obtained via the UniPlus+ specific "uvar" system call,
2005 * however the method outlined in crt0.c seems to be more portable.
2007 * Probably what will have to happen when a USG unexec is available,
2008 * at least on UniPlus, is temacs will have to be made unshared so
2009 * that text and data are contiguous. Then once loadup is complete,
2010 * unexec will produce a shared executable where the data can be
2011 * at the normal shared text boundry and the startofdata variable
2012 * will be patched by unexec to the correct value.
2020 return ((char *) DATA_START
);
2022 #ifdef ORDINARY_LINK
2024 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2025 * data_start isn't defined. We take the address of environ, which
2026 * is known to live at or near the start of the system crt0.c, and
2027 * we don't sweat the handful of bytes that might lose.
2029 extern char **environ
;
2031 return((char *) &environ
);
2033 extern int data_start
;
2034 return ((char *) &data_start
);
2035 #endif /* ORDINARY_LINK */
2036 #endif /* DATA_START */
2038 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2041 /* Some systems that cannot dump also cannot implement these. */
2044 * Return the address of the end of the text segment prior to
2045 * doing an unexec. After unexec the return value is undefined.
2052 return ((char *) TEXT_END
);
2055 return ((char *) &etext
);
2060 * Return the address of the end of the data segment prior to
2061 * doing an unexec. After unexec the return value is undefined.
2068 return ((char *) DATA_END
);
2071 return ((char *) &edata
);
2075 #endif /* not CANNOT_DUMP */
2077 /* init_system_name sets up the string for the Lisp function
2078 system-name to return. */
2084 extern Lisp_Object Vsystem_name
;
2089 #include <sys/socket.h>
2091 #endif /* HAVE_SOCKETS */
2092 #endif /* not VMS */
2093 #endif /* not BSD4_1 */
2099 Vsystem_name
= build_string (sysname
);
2103 if ((sp
= egetenv ("SYS$NODE")) == 0)
2104 Vsystem_name
= build_string ("vax-vms");
2105 else if ((end
= index (sp
, ':')) == 0)
2106 Vsystem_name
= build_string (sp
);
2108 Vsystem_name
= make_string (sp
, end
- sp
);
2110 #ifndef HAVE_GETHOSTNAME
2113 Vsystem_name
= build_string (uts
.nodename
);
2114 #else /* HAVE_GETHOSTNAME */
2115 int hostname_size
= 256;
2116 char *hostname
= (char *) alloca (hostname_size
);
2118 /* Try to get the host name; if the buffer is too short, try
2119 again. Apparently, the only indication gethostname gives of
2120 whether the buffer was large enough is the presence or absence
2121 of a '\0' in the string. Eech. */
2124 gethostname (hostname
, hostname_size
- 1);
2125 hostname
[hostname_size
- 1] = '\0';
2127 /* Was the buffer large enough for the '\0'? */
2128 if (strlen (hostname
) < hostname_size
- 1)
2131 hostname_size
<<= 1;
2132 hostname
= (char *) alloca (hostname_size
);
2135 /* Turn the hostname into the official, fully-qualified hostname.
2136 Don't do this if we're going to dump; this can confuse system
2137 libraries on some machines and make the dumped emacs core dump. */
2140 #endif /* not CANNOT_DUMP */
2144 for (count
= 0; count
< 10; count
++)
2149 hp
= gethostbyname (hostname
);
2151 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2154 Fsleep_for (make_number (1), Qnil
);
2158 char *fqdn
= hp
->h_name
;
2161 if (!index (fqdn
, '.'))
2163 /* We still don't have a fully qualified domain name.
2164 Try to find one in the list of alternate names */
2165 char **alias
= hp
->h_aliases
;
2166 while (*alias
&& !index (*alias
, '.'))
2173 /* Convert the host name to lower case. */
2174 /* Using ctype.h here would introduce a possible locale
2175 dependence that is probably wrong for hostnames. */
2179 if (*p
>= 'A' && *p
<= 'Z')
2186 #endif /* HAVE_SOCKETS */
2187 Vsystem_name
= build_string (hostname
);
2188 #endif /* HAVE_GETHOSTNAME */
2193 for (p
= XSTRING (Vsystem_name
)->data
; *p
; p
++)
2194 if (*p
== ' ' || *p
== '\t')
2202 #ifdef HAVE_X_WINDOWS
2203 /* Cause explanatory error message at compile time,
2204 since the select emulation is not good enough for X. */
2205 int *x
= &x_windows_lose_if_no_select_system_call
;
2208 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2209 * Only checks read descriptors.
2211 /* How long to wait between checking fds in select */
2212 #define SELECT_PAUSE 1
2215 /* For longjmp'ing back to read_input_waiting. */
2217 jmp_buf read_alarm_throw
;
2219 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2220 The read_socket_hook function sets this to 1 while it is waiting. */
2222 int read_alarm_should_throw
;
2230 #else /* not BSD4_1 */
2231 signal (SIGALRM
, SIG_IGN
);
2232 #endif /* not BSD4_1 */
2233 if (read_alarm_should_throw
)
2234 longjmp (read_alarm_throw
, 1);
2238 /* Only rfds are checked. */
2240 select (nfds
, rfds
, wfds
, efds
, timeout
)
2242 int *rfds
, *wfds
, *efds
, *timeout
;
2244 int ravail
= 0, orfds
= 0, old_alarm
;
2245 int timeoutval
= timeout
? *timeout
: 100000;
2246 int *local_timeout
= &timeoutval
;
2247 extern int proc_buffered_char
[];
2248 #ifndef subprocesses
2249 int process_tick
= 0, update_tick
= 0;
2251 extern int process_tick
, update_tick
;
2253 SIGTYPE (*old_trap
) ();
2266 /* If we are looking only for the terminal, with no timeout,
2267 just read it and wait -- that's more efficient. */
2268 if (orfds
== 1 && *local_timeout
== 100000 && process_tick
== update_tick
)
2270 if (! detect_input_pending ())
2271 read_input_waiting ();
2276 /* Once a second, till the timer expires, check all the flagged read
2277 * descriptors to see if any input is available. If there is some then
2278 * set the corresponding bit in the return copy of rfds.
2282 register int to_check
, bit
, fd
;
2286 for (to_check
= nfds
, bit
= 1, fd
= 0; --to_check
>= 0; bit
<<= 1, fd
++)
2290 int avail
= 0, status
= 0;
2293 avail
= detect_input_pending (); /* Special keyboard handler */
2297 status
= ioctl (fd
, FIONREAD
, &avail
);
2298 #else /* no FIONREAD */
2300 abort (); /* I don't think we need it. */
2301 #else /* not MSDOS */
2302 /* Hoping it will return -1 if nothing available
2303 or 0 if all 0 chars requested are read. */
2304 if (proc_buffered_char
[fd
] >= 0)
2308 avail
= read (fd
, &buf
, 1);
2310 proc_buffered_char
[fd
] = buf
;
2312 #endif /* not MSDOS */
2313 #endif /* no FIONREAD */
2315 if (status
>= 0 && avail
> 0)
2323 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2325 old_alarm
= alarm (0);
2326 old_trap
= signal (SIGALRM
, select_alarm
);
2328 alarm (SELECT_PAUSE
);
2329 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2330 while (select_alarmed
== 0 && *local_timeout
!= 0
2331 && process_tick
== update_tick
)
2334 sleep_or_kbd_hit (SELECT_PAUSE
, (orfds
& 1) != 0);
2336 #else /* not MSDOS */
2337 /* If we are interested in terminal input,
2338 wait by reading the terminal.
2339 That makes instant wakeup for terminal input at least. */
2342 read_input_waiting ();
2343 if (detect_input_pending ())
2348 #endif /* not MSDOS */
2350 (*local_timeout
) -= SELECT_PAUSE
;
2351 /* Reset the old alarm if there was one */
2353 signal (SIGALRM
, old_trap
);
2356 /* Reset or forge an interrupt for the original handler. */
2357 old_alarm
-= SELECT_PAUSE
;
2359 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2363 if (*local_timeout
== 0) /* Stop on timer being cleared */
2368 #endif /* not WINDOWSNT */
2370 /* Read keyboard input into the standard buffer,
2371 waiting for at least one character. */
2373 /* Make all keyboard buffers much bigger when using X windows. */
2374 #ifdef HAVE_X_WINDOWS
2375 #define BUFFER_SIZE_FACTOR 16
2377 #define BUFFER_SIZE_FACTOR 1
2380 read_input_waiting ()
2382 struct input_event e
;
2384 extern int quit_char
;
2386 if (read_socket_hook
)
2388 struct input_event buf
[256];
2390 read_alarm_should_throw
= 0;
2391 if (! setjmp (read_alarm_throw
))
2392 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2396 /* Scan the chars for C-g and store them in kbd_buffer. */
2397 for (i
= 0; i
< nread
; i
++)
2399 kbd_buffer_store_event (&buf
[i
]);
2400 /* Don't look at input that follows a C-g too closely.
2401 This reduces lossage due to autorepeat on C-g. */
2402 if (buf
[i
].kind
== ascii_keystroke
2403 && XINT(buf
[i
].code
) == quit_char
)
2410 nread
= read (fileno (stdin
), buf
, 1);
2412 /* Scan the chars for C-g and store them in kbd_buffer. */
2413 e
.kind
= ascii_keystroke
;
2414 XSETFRAME (e
.frame_or_window
, selected_frame
);
2416 for (i
= 0; i
< nread
; i
++)
2418 /* Convert chars > 0177 to meta events if desired.
2419 We do this under the same conditions that read_avail_input does. */
2420 if (read_socket_hook
== 0)
2422 /* If the user says she has a meta key, then believe her. */
2423 if (meta_key
== 1 && (buf
[i
] & 0x80))
2424 e
.modifiers
= meta_modifier
;
2429 XSETINT (e
.code
, buf
[i
]);
2430 kbd_buffer_store_event (&e
);
2431 /* Don't look at input that follows a C-g too closely.
2432 This reduces lossage due to autorepeat on C-g. */
2433 if (buf
[i
] == quit_char
)
2439 #endif /* not HAVE_SELECT */
2440 #endif /* not VMS */
2444 * Partially emulate 4.2 open call.
2445 * open is defined as this in 4.1.
2447 * - added by Michael Bloom @ Citicorp/TTI
2452 sys_open (path
, oflag
, mode
)
2456 if (oflag
& O_CREAT
)
2457 return creat (path
, mode
);
2459 return open (path
, oflag
);
2467 lmode
= LINTRUP
| lmode
;
2468 ioctl (fd
, TIOCLSET
, &lmode
);
2475 lmode
= ~LINTRUP
& lmode
;
2476 ioctl (0, TIOCLSET
, &lmode
);
2483 interrupts_deferred
= 0;
2490 interrupts_deferred
= 1;
2493 /* still inside #ifdef BSD4_1 */
2496 int sigheld
; /* Mask of held signals */
2501 sigheld
|= sigbit (signum
);
2508 sigheld
|= sigbit (signum
);
2514 sigheld
&= ~sigbit (signum
);
2518 sigfree () /* Free all held signals */
2521 for (i
= 0; i
< NSIG
; i
++)
2522 if (sigheld
& sigbit (i
))
2529 return 1 << (i
- 1);
2531 #endif /* subprocesses */
2534 /* POSIX signals support - DJB */
2535 /* Anyone with POSIX signals should have ANSI C declarations */
2537 #ifdef POSIX_SIGNALS
2539 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2540 static struct sigaction new_action
, old_action
;
2544 sigemptyset (&empty_mask
);
2545 sigfillset (&full_mask
);
2549 sys_signal (int signal_number
, signal_handler_t action
)
2552 /* This gets us restartable system calls for efficiency.
2553 The "else" code will works as well. */
2554 return (berk_signal (signal_number
, action
));
2556 sigemptyset (&new_action
.sa_mask
);
2557 new_action
.sa_handler
= action
;
2559 /* Emacs mostly works better with restartable system services. If this
2560 * flag exists, we probably want to turn it on here.
2562 new_action
.sa_flags
= SA_RESTART
;
2564 new_action
.sa_flags
= 0;
2566 sigaction (signal_number
, &new_action
, &old_action
);
2567 return (old_action
.sa_handler
);
2572 /* If we're compiling with GCC, we don't need this function, since it
2573 can be written as a macro. */
2575 sys_sigmask (int sig
)
2578 sigemptyset (&mask
);
2579 sigaddset (&mask
, sig
);
2585 sys_sigpause (sigset_t new_mask
)
2587 /* pause emulating berk sigpause... */
2588 sigsuspend (&new_mask
);
2592 /* I'd like to have these guys return pointers to the mask storage in here,
2593 but there'd be trouble if the code was saving multiple masks. I'll be
2594 safe and pass the structure. It normally won't be more than 2 bytes
2598 sys_sigblock (sigset_t new_mask
)
2601 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2606 sys_sigunblock (sigset_t new_mask
)
2609 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2614 sys_sigsetmask (sigset_t new_mask
)
2617 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2621 #endif /* POSIX_SIGNALS */
2630 register int length
;
2634 long max_str
= 65535;
2636 while (length
> max_str
) {
2637 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2642 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
2644 while (length
-- > 0)
2646 #endif /* not VMS */
2649 #endif /* no bzero */
2652 /* Saying `void' requires a declaration, above, where bcopy is used
2653 and that declaration causes pain for systems where bcopy is a macro. */
2654 bcopy (b1
, b2
, length
)
2657 register int length
;
2660 long max_str
= 65535;
2662 while (length
> max_str
) {
2663 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
2669 (void) LIB$
MOVC3 (&length
, b1
, b2
);
2671 while (length
-- > 0)
2673 #endif /* not VMS */
2675 #endif /* no bcopy */
2679 bcmp (b1
, b2
, length
) /* This could be a macro! */
2682 register int length
;
2685 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
2686 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
2688 return STR$
COMPARE (&src1
, &src2
);
2690 while (length
-- > 0)
2695 #endif /* not VMS */
2697 #endif /* no bcmp */
2699 #endif /* not BSTRING */
2707 /* Figure out how many bits the system's random number generator uses.
2708 `random' and `lrand48' are assumed to return 31 usable bits.
2709 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2710 so we'll shift it and treat it like the 15-bit USG `rand'. */
2714 # define RAND_BITS 31
2715 # else /* !HAVE_RANDOM */
2716 # ifdef HAVE_LRAND48
2717 # define RAND_BITS 31
2718 # define random lrand48
2719 # else /* !HAVE_LRAND48 */
2720 # define RAND_BITS 15
2721 # if RAND_MAX == 32767
2722 # define random rand
2723 # else /* RAND_MAX != 32767 */
2724 # if RAND_MAX == 2147483647
2725 # define random() (rand () >> 16)
2726 # else /* RAND_MAX != 2147483647 */
2728 # define random rand
2730 # define random() (rand () >> 16)
2732 # endif /* RAND_MAX != 2147483647 */
2733 # endif /* RAND_MAX != 32767 */
2734 # endif /* !HAVE_LRAND48 */
2735 # endif /* !HAVE_RANDOM */
2736 #endif /* !RAND_BITS */
2743 srandom ((unsigned int)arg
);
2745 # ifdef HAVE_LRAND48
2748 srand ((unsigned int)arg
);
2754 * Build a full Emacs-sized word out of whatever we've got.
2755 * This suffices even for a 64-bit architecture with a 15-bit rand.
2760 long val
= random ();
2761 #if VALBITS > RAND_BITS
2762 val
= (val
<< RAND_BITS
) ^ random ();
2763 #if VALBITS > 2*RAND_BITS
2764 val
= (val
<< RAND_BITS
) ^ random ();
2765 #if VALBITS > 3*RAND_BITS
2766 val
= (val
<< RAND_BITS
) ^ random ();
2767 #if VALBITS > 4*RAND_BITS
2768 val
= (val
<< RAND_BITS
) ^ random ();
2769 #endif /* need at least 5 */
2770 #endif /* need at least 4 */
2771 #endif /* need at least 3 */
2772 #endif /* need at least 2 */
2773 return val
& ((1L << VALBITS
) - 1);
2776 #ifdef WRONG_NAME_INSQUE
2789 /* If any place else asks for the TERM variable,
2790 allow it to be overridden with the EMACS_TERM variable
2791 before attempting to translate the logical name TERM. As a last
2792 resort, ask for VAX C's special idea of the TERM variable. */
2799 static char buf
[256];
2800 static struct dsc$descriptor_s equiv
2801 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2802 static struct dsc$descriptor_s d_name
2803 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2806 if (!strcmp (name
, "TERM"))
2808 val
= (char *) getenv ("EMACS_TERM");
2813 d_name
.dsc$w_length
= strlen (name
);
2814 d_name
.dsc$a_pointer
= name
;
2815 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2817 char *str
= (char *) xmalloc (eqlen
+ 1);
2818 bcopy (buf
, str
, eqlen
);
2820 /* This is a storage leak, but a pain to fix. With luck,
2821 no one will ever notice. */
2824 return (char *) getenv (name
);
2829 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2830 to force a call on the debugger from within the image. */
2835 LIB$
SIGNAL (SS$_DEBUG
);
2841 #ifdef LINK_CRTL_SHARE
2842 #ifdef SHAREABLE_LIB_BUG
2843 /* Variables declared noshare and initialized in sharable libraries
2844 cannot be shared. The VMS linker incorrectly forces you to use a private
2845 version which is uninitialized... If not for this "feature", we
2846 could use the C library definition of sys_nerr and sys_errlist. */
2848 char *sys_errlist
[] =
2852 "no such file or directory",
2854 "interrupted system call",
2856 "no such device or address",
2857 "argument list too long",
2858 "exec format error",
2861 "no more processes",
2862 "not enough memory",
2863 "permission denied",
2865 "block device required",
2866 "mount devices busy",
2868 "cross-device link",
2873 "file table overflow",
2874 "too many open files",
2878 "no space left on device",
2880 "read-only file system",
2886 "vax/vms specific error code nontranslatable error"
2888 #endif /* SHAREABLE_LIB_BUG */
2889 #endif /* LINK_CRTL_SHARE */
2892 #ifndef HAVE_STRERROR
2898 extern char *sys_errlist
[];
2899 extern int sys_nerr
;
2901 if (errnum
>= 0 && errnum
< sys_nerr
)
2902 return sys_errlist
[errnum
];
2903 return (char *) "Unknown error";
2905 #endif /* not WINDOWSNT */
2906 #endif /* ! HAVE_STRERROR */
2908 #ifdef INTERRUPTIBLE_OPEN
2912 sys_open (path
, oflag
, mode
)
2916 register int rtnval
;
2918 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2919 && (errno
== EINTR
));
2923 #endif /* INTERRUPTIBLE_OPEN */
2925 #ifdef INTERRUPTIBLE_CLOSE
2930 register int rtnval
;
2932 while ((rtnval
= close (fd
)) == -1
2933 && (errno
== EINTR
));
2937 #endif /* INTERRUPTIBLE_CLOSE */
2939 #ifdef INTERRUPTIBLE_IO
2942 sys_read (fildes
, buf
, nbyte
)
2947 register int rtnval
;
2949 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2950 && (errno
== EINTR
));
2955 sys_write (fildes
, buf
, nbyte
)
2960 register int rtnval
, bytes_written
;
2966 rtnval
= write (fildes
, buf
, nbyte
);
2973 return (bytes_written
? bytes_written
: -1);
2978 bytes_written
+= rtnval
;
2980 return (bytes_written
);
2983 #endif /* INTERRUPTIBLE_IO */
2988 * Substitute fork for vfork on USG flavors.
2995 #endif /* not WINDOWSNT */
2996 #endif /* not HAVE_VFORK */
3000 * All of the following are for USG.
3002 * On USG systems the system calls are INTERRUPTIBLE by signals
3003 * that the user program has elected to catch. Thus the system call
3004 * must be retried in these cases. To handle this without massive
3005 * changes in the source code, we remap the standard system call names
3006 * to names for our own functions in sysdep.c that do the system call
3007 * with retries. Actually, for portability reasons, it is good
3008 * programming practice, as this example shows, to limit all actual
3009 * system calls to a single occurrence in the source. Sure, this
3010 * adds an extra level of function call overhead but it is almost
3011 * always negligible. Fred Fish, Unisoft Systems Inc.
3014 #ifndef HAVE_SYS_SIGLIST
3015 char *sys_siglist
[NSIG
+ 1] =
3018 /* AIX has changed the signals a bit */
3019 "bogus signal", /* 0 */
3020 "hangup", /* 1 SIGHUP */
3021 "interrupt", /* 2 SIGINT */
3022 "quit", /* 3 SIGQUIT */
3023 "illegal instruction", /* 4 SIGILL */
3024 "trace trap", /* 5 SIGTRAP */
3025 "IOT instruction", /* 6 SIGIOT */
3026 "crash likely", /* 7 SIGDANGER */
3027 "floating point exception", /* 8 SIGFPE */
3028 "kill", /* 9 SIGKILL */
3029 "bus error", /* 10 SIGBUS */
3030 "segmentation violation", /* 11 SIGSEGV */
3031 "bad argument to system call", /* 12 SIGSYS */
3032 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3033 "alarm clock", /* 14 SIGALRM */
3034 "software termination signum", /* 15 SIGTERM */
3035 "user defined signal 1", /* 16 SIGUSR1 */
3036 "user defined signal 2", /* 17 SIGUSR2 */
3037 "death of a child", /* 18 SIGCLD */
3038 "power-fail restart", /* 19 SIGPWR */
3039 "bogus signal", /* 20 */
3040 "bogus signal", /* 21 */
3041 "bogus signal", /* 22 */
3042 "bogus signal", /* 23 */
3043 "bogus signal", /* 24 */
3044 "LAN I/O interrupt", /* 25 SIGAIO */
3045 "PTY I/O interrupt", /* 26 SIGPTY */
3046 "I/O intervention required", /* 27 SIGIOINT */
3048 "HFT grant", /* 28 SIGGRANT */
3049 "HFT retract", /* 29 SIGRETRACT */
3050 "HFT sound done", /* 30 SIGSOUND */
3051 "HFT input ready", /* 31 SIGMSG */
3054 "bogus signal", /* 0 */
3055 "hangup", /* 1 SIGHUP */
3056 "interrupt", /* 2 SIGINT */
3057 "quit", /* 3 SIGQUIT */
3058 "illegal instruction", /* 4 SIGILL */
3059 "trace trap", /* 5 SIGTRAP */
3060 "IOT instruction", /* 6 SIGIOT */
3061 "EMT instruction", /* 7 SIGEMT */
3062 "floating point exception", /* 8 SIGFPE */
3063 "kill", /* 9 SIGKILL */
3064 "bus error", /* 10 SIGBUS */
3065 "segmentation violation", /* 11 SIGSEGV */
3066 "bad argument to system call", /* 12 SIGSYS */
3067 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3068 "alarm clock", /* 14 SIGALRM */
3069 "software termination signum", /* 15 SIGTERM */
3070 "user defined signal 1", /* 16 SIGUSR1 */
3071 "user defined signal 2", /* 17 SIGUSR2 */
3072 "death of a child", /* 18 SIGCLD */
3073 "power-fail restart", /* 19 SIGPWR */
3075 "window size change", /* 20 SIGWINCH */
3076 "urgent socket condition", /* 21 SIGURG */
3077 "pollable event occured", /* 22 SIGPOLL */
3078 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
3079 "user stop requested from tty", /* 24 SIGTSTP */
3080 "stopped process has been continued", /* 25 SIGCONT */
3081 "background tty read attempted", /* 26 SIGTTIN */
3082 "background tty write attempted", /* 27 SIGTTOU */
3083 "virtual timer expired", /* 28 SIGVTALRM */
3084 "profiling timer expired", /* 29 SIGPROF */
3085 "exceeded cpu limit", /* 30 SIGXCPU */
3086 "exceeded file size limit", /* 31 SIGXFSZ */
3087 "process's lwps are blocked", /* 32 SIGWAITING */
3088 "special signal used by thread library", /* 33 SIGLWP */
3090 "Special Signal Used By CPR", /* 34 SIGFREEZE */
3093 "Special Signal Used By CPR", /* 35 SIGTHAW */
3096 #endif /* not AIX */
3099 #endif /* HAVE_SYS_SIGLIST */
3102 * Warning, this function may not duplicate 4.2 action properly
3103 * under error conditions.
3107 /* In 4.1, param.h fails to define this. */
3108 #define MAXPATHLEN 1024
3117 char *npath
, *spath
;
3118 extern char *getcwd ();
3120 BLOCK_INPUT
; /* getcwd uses malloc */
3121 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3124 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3125 up to first slash. Should be harmless on other systems. */
3126 while (*npath
&& *npath
!= '/')
3128 strcpy (pathname
, npath
);
3129 free (spath
); /* getcwd uses malloc */
3134 #endif /* HAVE_GETWD */
3137 * Emulate rename using unlink/link. Note that this is
3138 * only partially correct. Also, doesn't enforce restriction
3139 * that files be of same type (regular->regular, dir->dir, etc).
3148 if (access (from
, 0) == 0)
3151 if (link (from
, to
) == 0)
3152 if (unlink (from
) == 0)
3164 /* HPUX curses library references perror, but as far as we know
3165 it won't be called. Anyway this definition will do for now. */
3171 #endif /* not HAVE_PERROR */
3177 * Emulate BSD dup2. First close newd if it already exists.
3178 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3179 * until we are, then close the unsuccessful ones.
3186 register int fd
, ret
;
3191 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3193 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3200 ret
= dup2 (old
,new);
3206 #endif /* not HAVE_DUP2 */
3209 * Gettimeofday. Simulate as much as possible. Only accurate
3210 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3211 * Only needed when subprocesses are defined.
3216 #ifndef HAVE_GETTIMEOFDAY
3220 gettimeofday (tp
, tzp
)
3222 struct timezone
*tzp
;
3224 extern long time ();
3226 tp
->tv_sec
= time ((long *)0);
3229 tzp
->tz_minuteswest
= -1;
3235 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3238 * This function will go away as soon as all the stubs fixed. (fnf)
3244 printf ("%s not yet implemented\r\n", badfunc
);
3253 char *sys_siglist
[NSIG
+ 1] =
3255 "null signal", /* 0 SIGNULL */
3256 "hangup", /* 1 SIGHUP */
3257 "interrupt", /* 2 SIGINT */
3258 "quit", /* 3 SIGQUIT */
3259 "illegal instruction", /* 4 SIGILL */
3260 "trace trap", /* 5 SIGTRAP */
3261 "abort termination", /* 6 SIGABRT */
3262 "SIGEMT", /* 7 SIGEMT */
3263 "floating point exception", /* 8 SIGFPE */
3264 "kill", /* 9 SIGKILL */
3265 "bus error", /* 10 SIGBUS */
3266 "segmentation violation", /* 11 SIGSEGV */
3267 "bad argument to system call", /* 12 SIGSYS */
3268 "write on a pipe with no reader", /* 13 SIGPIPE */
3269 "alarm clock", /* 14 SIGALRM */
3270 "software termination signal", /* 15 SIGTERM */
3271 "user defined signal 1", /* 16 SIGUSR1 */
3272 "user defined signal 2", /* 17 SIGUSR2 */
3273 "child stopped or terminated", /* 18 SIGCLD */
3274 "power-fail restart", /* 19 SIGPWR */
3275 "window size changed", /* 20 SIGWINCH */
3276 "undefined", /* 21 */
3277 "pollable event occurred", /* 22 SIGPOLL */
3278 "sendable stop signal not from tty", /* 23 SIGSTOP */
3279 "stop signal from tty", /* 24 SIGSTP */
3280 "continue a stopped process", /* 25 SIGCONT */
3281 "attempted background tty read", /* 26 SIGTTIN */
3282 "attempted background tty write", /* 27 SIGTTOU */
3283 "undefined", /* 28 */
3284 "undefined", /* 29 */
3285 "undefined", /* 30 */
3286 "undefined", /* 31 */
3287 "undefined", /* 32 */
3288 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3289 "I/O is possible", /* 34 SIGIO */
3290 "exceeded cpu time limit", /* 35 SIGXCPU */
3291 "exceeded file size limit", /* 36 SIGXFSZ */
3292 "virtual time alarm", /* 37 SIGVTALRM */
3293 "profiling time alarm", /* 38 SIGPROF */
3294 "undefined", /* 39 */
3295 "file record locks revoked", /* 40 SIGLOST */
3296 "undefined", /* 41 */
3297 "undefined", /* 42 */
3298 "undefined", /* 43 */
3299 "undefined", /* 44 */
3300 "undefined", /* 45 */
3301 "undefined", /* 46 */
3302 "undefined", /* 47 */
3303 "undefined", /* 48 */
3304 "undefined", /* 49 */
3305 "undefined", /* 50 */
3306 "undefined", /* 51 */
3307 "undefined", /* 52 */
3308 "undefined", /* 53 */
3309 "undefined", /* 54 */
3310 "undefined", /* 55 */
3311 "undefined", /* 56 */
3312 "undefined", /* 57 */
3313 "undefined", /* 58 */
3314 "undefined", /* 59 */
3315 "undefined", /* 60 */
3316 "undefined", /* 61 */
3317 "undefined", /* 62 */
3318 "undefined", /* 63 */
3319 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3325 /* Directory routines for systems that don't have them. */
3327 #ifdef SYSV_SYSTEM_DIR
3331 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3335 register DIR *dirp
; /* stream from opendir */
3339 rtnval
= sys_close (dirp
->dd_fd
);
3341 /* Some systems (like Solaris) allocate the buffer and the DIR all
3342 in one block. Why in the world are we freeing this ourselves
3344 #if ! (defined (sun) && defined (USG5_4))
3345 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3347 xfree ((char *) dirp
);
3351 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3352 #endif /* SYSV_SYSTEM_DIR */
3354 #ifdef NONSYSTEM_DIR_LIBRARY
3358 char *filename
; /* name of directory */
3360 register DIR *dirp
; /* -> malloc'ed storage */
3361 register int fd
; /* file descriptor for read */
3362 struct stat sbuf
; /* result of fstat */
3364 fd
= sys_open (filename
, 0);
3369 if (fstat (fd
, &sbuf
) < 0
3370 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3371 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3375 return 0; /* bad luck today */
3380 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3387 register DIR *dirp
; /* stream from opendir */
3389 sys_close (dirp
->dd_fd
);
3390 xfree ((char *) dirp
);
3398 ino_t od_ino
; /* inode */
3399 char od_name
[DIRSIZ
]; /* filename */
3401 #endif /* not VMS */
3403 struct direct dir_static
; /* simulated directory contents */
3408 register DIR *dirp
; /* stream from opendir */
3411 register struct olddir
*dp
; /* -> directory data */
3413 register struct dir$_name
*dp
; /* -> directory data */
3414 register struct dir$_version
*dv
; /* -> version data */
3419 if (dirp
->dd_loc
>= dirp
->dd_size
)
3420 dirp
->dd_loc
= dirp
->dd_size
= 0;
3422 if (dirp
->dd_size
== 0 /* refill buffer */
3423 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3427 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3428 dirp
->dd_loc
+= sizeof (struct olddir
);
3430 if (dp
->od_ino
!= 0) /* not deleted entry */
3432 dir_static
.d_ino
= dp
->od_ino
;
3433 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3434 dir_static
.d_name
[DIRSIZ
] = '\0';
3435 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3436 dir_static
.d_reclen
= sizeof (struct direct
)
3438 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3439 return &dir_static
; /* -> simulated structure */
3442 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3443 if (dirp
->dd_loc
== 0)
3444 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3445 : dp
->dir$b_namecount
;
3446 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3447 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3448 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3449 dir_static
.d_reclen
= sizeof (struct direct
)
3451 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3452 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3453 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3454 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3461 /* readdirver is just like readdir except it returns all versions of a file
3462 as separate entries. */
3467 register DIR *dirp
; /* stream from opendir */
3469 register struct dir$_name
*dp
; /* -> directory data */
3470 register struct dir$_version
*dv
; /* -> version data */
3472 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3473 dirp
->dd_loc
= dirp
->dd_size
= 0;
3475 if (dirp
->dd_size
== 0 /* refill buffer */
3476 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3479 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3480 if (dirp
->dd_loc
== 0)
3481 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3482 : dp
->dir$b_namecount
;
3483 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3484 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3485 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3486 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3487 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3488 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3489 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3490 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3496 #endif /* NONSYSTEM_DIR_LIBRARY */
3500 set_file_times (filename
, atime
, mtime
)
3502 EMACS_TIME atime
, mtime
;
3505 struct timeval tv
[2];
3508 return utimes (filename
, tv
);
3509 #else /* not HAVE_UTIMES */
3511 utb
.actime
= EMACS_SECS (atime
);
3512 utb
.modtime
= EMACS_SECS (mtime
);
3513 return utime (filename
, &utb
);
3514 #endif /* not HAVE_UTIMES */
3517 /* mkdir and rmdir functions, for systems which don't have them. */
3521 * Written by Robert Rother, Mariah Corporation, August 1985.
3523 * If you want it, it's yours. All I ask in return is that if you
3524 * figure out how to do this in a Bourne Shell script you send me
3526 * sdcsvax!rmr or rmr@uscd
3528 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3529 * subroutine. 11Mar86; hoptoad!gnu
3531 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3532 * subroutine didn't return EEXIST. It does now.
3538 #ifdef MKDIR_PROTOTYPE
3542 mkdir (dpath
, dmode
)
3547 int cpid
, status
, fd
;
3548 struct stat statbuf
;
3550 if (stat (dpath
, &statbuf
) == 0)
3552 errno
= EEXIST
; /* Stat worked, so it already exists */
3556 /* If stat fails for a reason other than non-existence, return error */
3557 if (errno
!= ENOENT
)
3560 synch_process_alive
= 1;
3561 switch (cpid
= fork ())
3564 case -1: /* Error in fork */
3565 return (-1); /* Errno is set already */
3567 case 0: /* Child process */
3569 * Cheap hack to set mode of new directory. Since this
3570 * child process is going away anyway, we zap its umask.
3571 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3572 * directory. Does anybody care?
3574 status
= umask (0); /* Get current umask */
3575 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3576 fd
= sys_open("/dev/null", 2);
3583 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3584 _exit (-1); /* Can't exec /bin/mkdir */
3586 default: /* Parent process */
3587 wait_for_termination (cpid
);
3590 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3592 errno
= EIO
; /* We don't know why, but */
3593 return -1; /* /bin/mkdir failed */
3598 #endif /* not HAVE_MKDIR */
3605 int cpid
, status
, fd
;
3606 struct stat statbuf
;
3608 if (stat (dpath
, &statbuf
) != 0)
3610 /* Stat just set errno. We don't have to */
3614 synch_process_alive
= 1;
3615 switch (cpid
= fork ())
3618 case -1: /* Error in fork */
3619 return (-1); /* Errno is set already */
3621 case 0: /* Child process */
3622 fd
= sys_open("/dev/null", 2);
3629 wait_for_termination (cpid
);
3630 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3631 return -1; /* /bin/rmdir failed */
3632 default: /* Parent process */
3633 while (cpid
!= wait (&status
)); /* Wait for kid to finish */
3636 if (WIFSIGNALED (status
) || WEXITSTATUS (status
) != 0)
3638 errno
= EIO
; /* We don't know why, but */
3639 return -1; /* /bin/mkdir failed */
3644 #endif /* !HAVE_RMDIR */
3648 /* Functions for VMS */
3650 #include "vms-pwd.h"
3655 /* Return as a string the VMS error string pertaining to STATUS.
3656 Reuses the same static buffer each time it is called. */
3660 int status
; /* VMS status code */
3664 static char buf
[257];
3666 bufadr
[0] = sizeof buf
- 1;
3667 bufadr
[1] = (int) buf
;
3668 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3669 return "untranslatable VMS error status";
3677 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3678 * not work correctly. (It also doesn't work well in version 2.3.)
3683 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3684 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3688 unsigned short s_buflen
;
3689 unsigned short s_code
;
3691 unsigned short *s_retlenadr
;
3695 #define buflen s.s_buflen
3696 #define code s.s_code
3697 #define bufadr s.s_bufadr
3698 #define retlenadr s.s_retlenadr
3700 #define R_OK 4 /* test for read permission */
3701 #define W_OK 2 /* test for write permission */
3702 #define X_OK 1 /* test for execute (search) permission */
3703 #define F_OK 0 /* test for presence of file */
3706 sys_access (path
, mode
)
3710 static char *user
= NULL
;
3713 /* translate possible directory spec into .DIR file name, so brain-dead
3714 * access can treat the directory like a file. */
3715 if (directory_file_name (path
, dir_fn
))
3719 return access (path
, mode
);
3720 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3726 unsigned short int dummy
;
3728 static int constant
= ACL$C_FILE
;
3729 DESCRIPTOR (path_desc
, path
);
3730 DESCRIPTOR (user_desc
, user
);
3734 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3737 acces
|= CHP$M_READ
;
3739 acces
|= CHP$M_WRITE
;
3740 itemlst
[0].buflen
= sizeof (int);
3741 itemlst
[0].code
= CHP$_FLAGS
;
3742 itemlst
[0].bufadr
= (char *) &flags
;
3743 itemlst
[0].retlenadr
= &dummy
;
3744 itemlst
[1].buflen
= sizeof (int);
3745 itemlst
[1].code
= CHP$_ACCESS
;
3746 itemlst
[1].bufadr
= (char *) &acces
;
3747 itemlst
[1].retlenadr
= &dummy
;
3748 itemlst
[2].end
= CHP$_END
;
3749 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3750 return stat
== SS$_NORMAL
? 0 : -1;
3754 #else /* not VMS4_4 */
3757 #define ACE$M_WRITE 2
3758 #define ACE$C_KEYID 1
3760 static unsigned short memid
, grpid
;
3761 static unsigned int uic
;
3763 /* Called from init_sys_modes, so it happens not very often
3764 but at least each time Emacs is loaded. */
3765 sys_access_reinit ()
3771 sys_access (filename
, type
)
3777 int status
, size
, i
, typecode
, acl_controlled
;
3778 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3779 union prvdef prvmask
;
3781 /* Get UIC and GRP values for protection checking. */
3784 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3787 memid
= uic
& 0xFFFF;
3791 if (type
!= 2) /* not checking write access */
3792 return access (filename
, type
);
3794 /* Check write protection. */
3796 #define CHECKPRIV(bit) (prvmask.bit)
3797 #define WRITEABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3799 /* Find privilege bits */
3800 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3802 error ("Unable to find privileges: %s", vmserrstr (status
));
3803 if (CHECKPRIV (PRV$V_BYPASS
))
3804 return 0; /* BYPASS enabled */
3806 fab
.fab$b_fac
= FAB$M_GET
;
3807 fab
.fab$l_fna
= filename
;
3808 fab
.fab$b_fns
= strlen (filename
);
3809 fab
.fab$l_xab
= &xab
;
3810 xab
= cc$rms_xabpro
;
3811 xab
.xab$l_aclbuf
= aclbuf
;
3812 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3813 status
= SYS$
OPEN (&fab
, 0, 0);
3816 SYS$
CLOSE (&fab
, 0, 0);
3817 /* Check system access */
3818 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITEABLE (XAB$V_SYS
))
3820 /* Check ACL entries, if any */
3822 if (xab
.xab$w_acllen
> 0)
3825 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3826 while (*aclptr
&& aclptr
< aclend
)
3828 size
= (*aclptr
& 0xff) / 4;
3829 typecode
= (*aclptr
>> 8) & 0xff;
3830 if (typecode
== ACE$C_KEYID
)
3831 for (i
= size
- 1; i
> 1; i
--)
3832 if (aclptr
[i
] == uic
)
3835 if (aclptr
[1] & ACE$M_WRITE
)
3836 return 0; /* Write access through ACL */
3838 aclptr
= &aclptr
[size
];
3840 if (acl_controlled
) /* ACL specified, prohibits write access */
3843 /* No ACL entries specified, check normal protection */
3844 if (WRITEABLE (XAB$V_WLD
)) /* World writeable */
3846 if (WRITEABLE (XAB$V_GRP
) &&
3847 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3848 return 0; /* Group writeable */
3849 if (WRITEABLE (XAB$V_OWN
) &&
3850 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3851 return 0; /* Owner writeable */
3853 return -1; /* Not writeable */
3855 #endif /* not VMS4_4 */
3858 static char vtbuf
[NAM$C_MAXRSS
+1];
3860 /* translate a vms file spec to a unix path */
3862 sys_translate_vms (vfile
)
3873 /* leading device or logical name is a root directory */
3874 if (p
= strchr (vfile
, ':'))
3883 if (*p
== '[' || *p
== '<')
3885 while (*++vfile
!= *p
+ 2)
3889 if (vfile
[-1] == *p
)
3912 static char utbuf
[NAM$C_MAXRSS
+1];
3914 /* translate a unix path to a VMS file spec */
3916 sys_translate_unix (ufile
)
3939 if (index (&ufile
[1], '/'))
3946 if (index (&ufile
[1], '/'))
3953 if (strncmp (ufile
, "./", 2) == 0)
3960 ufile
++; /* skip the dot */
3961 if (index (&ufile
[1], '/'))
3966 else if (strncmp (ufile
, "../", 3) == 0)
3974 ufile
+= 2; /* skip the dots */
3975 if (index (&ufile
[1], '/'))
4000 extern char *getcwd ();
4002 #define MAXPATHLEN 1024
4004 ptr
= xmalloc (MAXPATHLEN
);
4005 val
= getcwd (ptr
, MAXPATHLEN
);
4011 strcpy (pathname
, ptr
);
4019 long item_code
= JPI$_OWNER
;
4020 unsigned long parent_id
;
4023 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4026 vaxc$errno
= status
;
4036 return (getgid () << 16) | getuid ();
4040 sys_read (fildes
, buf
, nbyte
)
4045 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4050 sys_write (fildes
, buf
, nbyte
)
4055 register int nwrote
, rtnval
= 0;
4057 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4063 return rtnval
? rtnval
: -1;
4064 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4065 return rtnval
? rtnval
: -1;
4066 return (rtnval
+ nwrote
);
4071 * VAX/VMS VAX C RTL really loses. It insists that records
4072 * end with a newline (carriage return) character, and if they
4073 * don't it adds one (nice of it isn't it!)
4075 * Thus we do this stupidity below.
4079 sys_write (fildes
, buf
, nbytes
)
4082 unsigned int nbytes
;
4089 fstat (fildes
, &st
);
4095 /* Handle fixed-length files with carriage control. */
4096 if (st
.st_fab_rfm
== FAB$C_FIX
4097 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4099 len
= st
.st_fab_mrs
;
4100 retval
= write (fildes
, p
, min (len
, nbytes
));
4103 retval
++; /* This skips the implied carriage control */
4107 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4108 while (*e
!= '\n' && e
> p
) e
--;
4109 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4110 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4112 retval
= write (fildes
, p
, len
);
4123 /* Create file NEW copying its attributes from file OLD. If
4124 OLD is 0 or does not exist, create based on the value of
4127 /* Protection value the file should ultimately have.
4128 Set by create_copy_attrs, and use by rename_sansversions. */
4129 static unsigned short int fab_final_pro
;
4132 creat_copy_attrs (old
, new)
4135 struct FAB fab
= cc$rms_fab
;
4136 struct XABPRO xabpro
;
4137 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4138 extern int vms_stmlf_recfm
;
4142 fab
.fab$b_fac
= FAB$M_GET
;
4143 fab
.fab$l_fna
= old
;
4144 fab
.fab$b_fns
= strlen (old
);
4145 fab
.fab$l_xab
= (char *) &xabpro
;
4146 xabpro
= cc$rms_xabpro
;
4147 xabpro
.xab$l_aclbuf
= aclbuf
;
4148 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4149 /* Call $OPEN to fill in the fab & xabpro fields. */
4150 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4152 SYS$
CLOSE (&fab
, 0, 0);
4153 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4154 if (xabpro
.xab$w_acllen
> 0)
4156 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4157 /* If the acl buffer was too short, redo open with longer one.
4158 Wouldn't need to do this if there were some system imposed
4159 limit on the size of an ACL, but I can't find any such. */
4161 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4162 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4163 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4164 SYS$
CLOSE (&fab
, 0, 0);
4170 xabpro
.xab$l_aclbuf
= 0;
4175 fab
.fab$l_fna
= new;
4176 fab
.fab$b_fns
= strlen (new);
4180 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4181 fab
.fab$b_rat
= FAB$M_CR
;
4184 /* Set the file protections such that we will be able to manipulate
4185 this file. Once we are done writing and renaming it, we will set
4186 the protections back. */
4188 fab_final_pro
= xabpro
.xab$w_pro
;
4190 SYS$
SETDFPROT (0, &fab_final_pro
);
4191 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4193 /* Create the new file with either default attrs or attrs copied
4195 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4197 SYS$
CLOSE (&fab
, 0, 0);
4198 /* As this is a "replacement" for creat, return a file descriptor
4199 opened for writing. */
4200 return open (new, O_WRONLY
);
4205 #include <varargs.h>
4208 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4212 sys_creat (va_alist
)
4215 va_list list_incrementer
;
4218 int rfd
; /* related file descriptor */
4219 int fd
; /* Our new file descriptor */
4226 extern int vms_stmlf_recfm
;
4229 va_start (list_incrementer
);
4230 name
= va_arg (list_incrementer
, char *);
4231 mode
= va_arg (list_incrementer
, int);
4233 rfd
= va_arg (list_incrementer
, int);
4234 va_end (list_incrementer
);
4237 /* Use information from the related file descriptor to set record
4238 format of the newly created file. */
4239 fstat (rfd
, &st_buf
);
4240 switch (st_buf
.st_fab_rfm
)
4243 strcpy (rfm
, "rfm = fix");
4244 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4245 strcpy (rat
, "rat = ");
4246 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4248 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4249 strcat (rat
, "ftn");
4250 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4251 strcat (rat
, "prn");
4252 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4253 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4254 strcat (rat
, ", blk");
4256 strcat (rat
, "blk");
4257 return creat (name
, 0, rfm
, rat
, mrs
);
4260 strcpy (rfm
, "rfm = vfc");
4261 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4262 strcpy (rat
, "rat = ");
4263 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4265 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4266 strcat (rat
, "ftn");
4267 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4268 strcat (rat
, "prn");
4269 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4270 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4271 strcat (rat
, ", blk");
4273 strcat (rat
, "blk");
4274 return creat (name
, 0, rfm
, rat
, fsz
);
4277 strcpy (rfm
, "rfm = stm");
4281 strcpy (rfm
, "rfm = stmcr");
4285 strcpy (rfm
, "rfm = stmlf");
4289 strcpy (rfm
, "rfm = udf");
4293 strcpy (rfm
, "rfm = var");
4296 strcpy (rat
, "rat = ");
4297 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4299 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4300 strcat (rat
, "ftn");
4301 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4302 strcat (rat
, "prn");
4303 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4304 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4305 strcat (rat
, ", blk");
4307 strcat (rat
, "blk");
4311 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4312 strcpy (rat
, "rat=cr");
4314 /* Until the VAX C RTL fixes the many bugs with modes, always use
4315 mode 0 to get the user's default protection. */
4316 fd
= creat (name
, 0, rfm
, rat
);
4317 if (fd
< 0 && errno
== EEXIST
)
4319 if (unlink (name
) < 0)
4320 report_file_error ("delete", build_string (name
));
4321 fd
= creat (name
, 0, rfm
, rat
);
4327 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4328 sys_fwrite (ptr
, size
, num
, fp
)
4329 register char * ptr
;
4332 register int tot
= num
* size
;
4339 * The VMS C library routine creat actually creates a new version of an
4340 * existing file rather than truncating the old version. There are times
4341 * when this is not the desired behavior, for instance, when writing an
4342 * auto save file (you only want one version), or when you don't have
4343 * write permission in the directory containing the file (but the file
4344 * itself is writable). Hence this routine, which is equivalent to
4345 * "close (creat (fn, 0));" on Unix if fn already exists.
4351 struct FAB xfab
= cc$rms_fab
;
4352 struct RAB xrab
= cc$rms_rab
;
4355 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4356 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4357 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4358 xfab
.fab$l_fna
= fn
;
4359 xfab
.fab$b_fns
= strlen (fn
);
4360 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4362 xrab
.rab$l_fab
= &xfab
;
4364 /* This gibberish opens the file, positions to the first record, and
4365 deletes all records from there until the end of file. */
4366 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4368 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4369 (SYS$
FIND (&xrab
) & 01) == 01 &&
4370 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4381 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4382 SYSPRV or a readable SYSUAF.DAT. */
4388 * Routine to read the VMS User Authorization File and return
4389 * a specific user's record.
4392 static struct UAF retuaf
;
4395 get_uaf_name (uname
)
4402 uaf_fab
= cc$rms_fab
;
4403 uaf_rab
= cc$rms_rab
;
4404 /* initialize fab fields */
4405 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4406 uaf_fab
.fab$b_fns
= 21;
4407 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4408 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4409 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4410 /* initialize rab fields */
4411 uaf_rab
.rab$l_fab
= &uaf_fab
;
4412 /* open the User Authorization File */
4413 status
= SYS$
OPEN (&uaf_fab
);
4417 vaxc$errno
= status
;
4420 status
= SYS$
CONNECT (&uaf_rab
);
4424 vaxc$errno
= status
;
4427 /* read the requested record - index is in uname */
4428 uaf_rab
.rab$l_kbf
= uname
;
4429 uaf_rab
.rab$b_ksz
= strlen (uname
);
4430 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4431 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4432 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4433 status
= SYS$
GET (&uaf_rab
);
4437 vaxc$errno
= status
;
4440 /* close the User Authorization File */
4441 status
= SYS$
DISCONNECT (&uaf_rab
);
4445 vaxc$errno
= status
;
4448 status
= SYS$
CLOSE (&uaf_fab
);
4452 vaxc$errno
= status
;
4466 uaf_fab
= cc$rms_fab
;
4467 uaf_rab
= cc$rms_rab
;
4468 /* initialize fab fields */
4469 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4470 uaf_fab
.fab$b_fns
= 21;
4471 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4472 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4473 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4474 /* initialize rab fields */
4475 uaf_rab
.rab$l_fab
= &uaf_fab
;
4476 /* open the User Authorization File */
4477 status
= SYS$
OPEN (&uaf_fab
);
4481 vaxc$errno
= status
;
4484 status
= SYS$
CONNECT (&uaf_rab
);
4488 vaxc$errno
= status
;
4491 /* read the requested record - index is in uic */
4492 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4493 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4494 uaf_rab
.rab$b_ksz
= sizeof uic
;
4495 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4496 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4497 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4498 status
= SYS$
GET (&uaf_rab
);
4502 vaxc$errno
= status
;
4505 /* close the User Authorization File */
4506 status
= SYS$
DISCONNECT (&uaf_rab
);
4510 vaxc$errno
= status
;
4513 status
= SYS$
CLOSE (&uaf_fab
);
4517 vaxc$errno
= status
;
4523 static struct passwd retpw
;
4531 /* copy these out first because if the username is 32 chars, the next
4532 section will overwrite the first byte of the UIC */
4533 retpw
.pw_uid
= up
->uaf$w_mem
;
4534 retpw
.pw_gid
= up
->uaf$w_grp
;
4536 /* I suppose this is not the best sytle, to possibly overwrite one
4537 byte beyond the end of the field, but what the heck... */
4538 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4539 while (ptr
[-1] == ' ')
4542 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4544 /* the rest of these are counted ascii strings */
4545 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4546 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4547 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4548 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4549 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4550 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4551 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4552 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4556 #else /* not READ_SYSUAF */
4557 static struct passwd retpw
;
4558 #endif /* not READ_SYSUAF */
4569 unsigned char * full
;
4570 #endif /* READ_SYSUAF */
4575 if ('a' <= *ptr
&& *ptr
<= 'z')
4580 if (!(up
= get_uaf_name (name
)))
4582 return cnv_uaf_pw (up
);
4584 if (strcmp (name
, getenv ("USER")) == 0)
4586 retpw
.pw_uid
= getuid ();
4587 retpw
.pw_gid
= getgid ();
4588 strcpy (retpw
.pw_name
, name
);
4589 if (full
= egetenv ("FULLNAME"))
4590 strcpy (retpw
.pw_gecos
, full
);
4592 *retpw
.pw_gecos
= '\0';
4593 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4594 *retpw
.pw_shell
= '\0';
4599 #endif /* not READ_SYSUAF */
4609 if (!(up
= get_uaf_uic (uid
)))
4611 return cnv_uaf_pw (up
);
4613 if (uid
== sys_getuid ())
4614 return getpwnam (egetenv ("USER"));
4617 #endif /* not READ_SYSUAF */
4620 /* return total address space available to the current process. This is
4621 the sum of the current p0 size, p1 size and free page table entries
4626 unsigned long free_pages
;
4627 unsigned long frep0va
;
4628 unsigned long frep1va
;
4631 item_code
= JPI$_FREPTECNT
;
4632 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4635 vaxc$errno
= status
;
4640 item_code
= JPI$_FREP0VA
;
4641 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4644 vaxc$errno
= status
;
4647 item_code
= JPI$_FREP1VA
;
4648 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4651 vaxc$errno
= status
;
4655 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4658 define_logical_name (varname
, string
)
4662 struct dsc$descriptor_s strdsc
=
4663 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4664 struct dsc$descriptor_s envdsc
=
4665 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4666 struct dsc$descriptor_s lnmdsc
=
4667 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4669 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4672 delete_logical_name (varname
)
4675 struct dsc$descriptor_s envdsc
=
4676 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4677 struct dsc$descriptor_s lnmdsc
=
4678 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4680 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4691 error ("execvp system call not implemented");
4699 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4700 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4701 char from_esn
[NAM$C_MAXRSS
];
4702 char to_esn
[NAM$C_MAXRSS
];
4704 from_fab
.fab$l_fna
= from
;
4705 from_fab
.fab$b_fns
= strlen (from
);
4706 from_fab
.fab$l_nam
= &from_nam
;
4707 from_fab
.fab$l_fop
= FAB$M_NAM
;
4709 from_nam
.nam$l_esa
= from_esn
;
4710 from_nam
.nam$b_ess
= sizeof from_esn
;
4712 to_fab
.fab$l_fna
= to
;
4713 to_fab
.fab$b_fns
= strlen (to
);
4714 to_fab
.fab$l_nam
= &to_nam
;
4715 to_fab
.fab$l_fop
= FAB$M_NAM
;
4717 to_nam
.nam$l_esa
= to_esn
;
4718 to_nam
.nam$b_ess
= sizeof to_esn
;
4720 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4726 if (status
== RMS$_DEV
)
4730 vaxc$errno
= status
;
4735 /* This function renames a file like `rename', but it strips
4736 the version number from the "to" filename, such that the "to" file is
4737 will always be a new version. It also sets the file protection once it is
4738 finished. The protection that we will use is stored in fab_final_pro,
4739 and was set when we did a creat_copy_attrs to create the file that we
4742 We could use the chmod function, but Eunichs uses 3 bits per user category
4743 to describe the protection, and VMS uses 4 (write and delete are separate
4744 bits). To maintain portability, the VMS implementation of `chmod' wires
4745 the W and D bits together. */
4748 static struct fibdef fib
; /* We need this initialized to zero */
4749 char vms_file_written
[NAM$C_MAXRSS
];
4752 rename_sans_version (from
,to
)
4759 struct FAB to_fab
= cc$rms_fab
;
4760 struct NAM to_nam
= cc$rms_nam
;
4761 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4762 struct dsc$descriptor fib_attr
[2]
4763 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4764 char to_esn
[NAM$C_MAXRSS
];
4766 $
DESCRIPTOR (disk
,to_esn
);
4768 to_fab
.fab$l_fna
= to
;
4769 to_fab
.fab$b_fns
= strlen (to
);
4770 to_fab
.fab$l_nam
= &to_nam
;
4771 to_fab
.fab$l_fop
= FAB$M_NAM
;
4773 to_nam
.nam$l_esa
= to_esn
;
4774 to_nam
.nam$b_ess
= sizeof to_esn
;
4776 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4778 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4779 *(to_nam
.nam$l_ver
) = '\0';
4781 stat
= rename (from
, to_esn
);
4785 strcpy (vms_file_written
, to_esn
);
4787 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4788 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4790 /* Now set the file protection to the correct value */
4791 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4793 /* Copy these fields into the fib */
4794 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4795 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4796 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4798 SYS$
CLOSE (&to_fab
, 0, 0);
4800 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4803 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4804 0, 0, 0, &fib_attr
, 0);
4807 stat
= SYS$
DASSGN (chan
);
4810 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4820 unsigned short fid
[3];
4821 char esa
[NAM$C_MAXRSS
];
4824 fab
.fab$l_fop
= FAB$M_OFP
;
4825 fab
.fab$l_fna
= file
;
4826 fab
.fab$b_fns
= strlen (file
);
4827 fab
.fab$l_nam
= &nam
;
4830 nam
.nam$l_esa
= esa
;
4831 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4833 status
= SYS$
PARSE (&fab
);
4834 if ((status
& 1) == 0)
4837 vaxc$errno
= status
;
4840 status
= SYS$
SEARCH (&fab
);
4841 if ((status
& 1) == 0)
4844 vaxc$errno
= status
;
4848 fid
[0] = nam
.nam$w_fid
[0];
4849 fid
[1] = nam
.nam$w_fid
[1];
4850 fid
[2] = nam
.nam$w_fid
[2];
4852 fab
.fab$l_fna
= new;
4853 fab
.fab$b_fns
= strlen (new);
4855 status
= SYS$
PARSE (&fab
);
4856 if ((status
& 1) == 0)
4859 vaxc$errno
= status
;
4863 nam
.nam$w_fid
[0] = fid
[0];
4864 nam
.nam$w_fid
[1] = fid
[1];
4865 nam
.nam$w_fid
[2] = fid
[2];
4867 nam
.nam$l_esa
= nam
.nam$l_name
;
4868 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4870 status
= SYS$
ENTER (&fab
);
4871 if ((status
& 1) == 0)
4874 vaxc$errno
= status
;
4884 printf ("%s not yet implemented\r\n", badfunc
);
4892 /* Arrange to return a range centered on zero. */
4893 return rand () - (1 << 30);
4904 /* Called from init_sys_modes. */
4909 /* If we're not on an HFT we shouldn't do any of this. We determine
4910 if we are on an HFT by trying to get an HFT error code. If this
4911 call fails, we're not on an HFT. */
4913 if (ioctl (0, HFQERROR
, &junk
) < 0)
4915 #else /* not IBMR2AIX */
4916 if (ioctl (0, HFQEIO
, 0) < 0)
4918 #endif /* not IBMR2AIX */
4920 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4921 as the rubout key's ASCII code. Here this is changed. The bug is that
4922 there's no way to determine the old mapping, so in reset_sys_modes
4923 we need to assume that the normal map had been present. Of course, this
4924 code also doesn't help if on a terminal emulator which doesn't understand
4928 struct hfkeymap keymap
;
4930 buf
.hf_bufp
= (char *)&keymap
;
4931 buf
.hf_buflen
= sizeof (keymap
);
4932 keymap
.hf_nkeys
= 2;
4933 keymap
.hfkey
[0].hf_kpos
= 15;
4934 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4936 keymap
.hfkey
[0].hf_keyidh
= '<';
4937 #else /* not IBMR2AIX */
4938 keymap
.hfkey
[0].hf_page
= '<';
4939 #endif /* not IBMR2AIX */
4940 keymap
.hfkey
[0].hf_char
= 127;
4941 keymap
.hfkey
[1].hf_kpos
= 15;
4942 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4944 keymap
.hfkey
[1].hf_keyidh
= '<';
4945 #else /* not IBMR2AIX */
4946 keymap
.hfkey
[1].hf_page
= '<';
4947 #endif /* not IBMR2AIX */
4948 keymap
.hfkey
[1].hf_char
= 127;
4949 hftctl (0, HFSKBD
, &buf
);
4951 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
4953 line_ins_del_ok
= char_ins_del_ok
= 0;
4956 /* Reset the rubout key to backspace. */
4961 struct hfkeymap keymap
;
4965 if (ioctl (0, HFQERROR
, &junk
) < 0)
4967 #else /* not IBMR2AIX */
4968 if (ioctl (0, HFQEIO
, 0) < 0)
4970 #endif /* not IBMR2AIX */
4972 buf
.hf_bufp
= (char *)&keymap
;
4973 buf
.hf_buflen
= sizeof (keymap
);
4974 keymap
.hf_nkeys
= 2;
4975 keymap
.hfkey
[0].hf_kpos
= 15;
4976 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4978 keymap
.hfkey
[0].hf_keyidh
= '<';
4979 #else /* not IBMR2AIX */
4980 keymap
.hfkey
[0].hf_page
= '<';
4981 #endif /* not IBMR2AIX */
4982 keymap
.hfkey
[0].hf_char
= 8;
4983 keymap
.hfkey
[1].hf_kpos
= 15;
4984 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4986 keymap
.hfkey
[1].hf_keyidh
= '<';
4987 #else /* not IBMR2AIX */
4988 keymap
.hfkey
[1].hf_page
= '<';
4989 #endif /* not IBMR2AIX */
4990 keymap
.hfkey
[1].hf_char
= 8;
4991 hftctl (0, HFSKBD
, &buf
);
4998 /* These are included on Sunos 4.1 when we do not use shared libraries.
4999 X11 libraries may refer to these functions but (we hope) do not
5000 actually call them. */
5020 #endif /* USE_DL_STUBS */